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+// OpenLayers 3. See http://openlayers.org/
+// License: https://raw.githubusercontent.com/openlayers/ol3/master/LICENSE.md
+// Version: v3.17.1
+
+(function (root, factory) {
+ if (typeof exports === "object") {
+ module.exports = factory();
+ } else if (typeof define === "function" && define.amd) {
+ define([], factory);
+ } else {
+ root.ol = factory();
+ }
+}(this, function () {
+ var OPENLAYERS = {};
+ var goog = this.goog = {};
+this.CLOSURE_NO_DEPS = true;
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Bootstrap for the Google JS Library (Closure).
+ *
+ * In uncompiled mode base.js will write out Closure's deps file, unless the
+ * global <code>CLOSURE_NO_DEPS</code> is set to true. This allows projects to
+ * include their own deps file(s) from different locations.
+ *
+ * @author arv@google.com (Erik Arvidsson)
+ *
+ * @provideGoog
+ */
+
+
+/**
+ * @define {boolean} Overridden to true by the compiler when
+ * --process_closure_primitives is specified.
+ */
+var COMPILED = false;
+
+
+/**
+ * Base namespace for the Closure library. Checks to see goog is already
+ * defined in the current scope before assigning to prevent clobbering if
+ * base.js is loaded more than once.
+ *
+ * @const
+ */
+var goog = goog || {};
+
+
+/**
+ * Reference to the global context. In most cases this will be 'window'.
+ */
+goog.global = this;
+
+
+/**
+ * A hook for overriding the define values in uncompiled mode.
+ *
+ * In uncompiled mode, {@code CLOSURE_UNCOMPILED_DEFINES} may be defined before
+ * loading base.js. If a key is defined in {@code CLOSURE_UNCOMPILED_DEFINES},
+ * {@code goog.define} will use the value instead of the default value. This
+ * allows flags to be overwritten without compilation (this is normally
+ * accomplished with the compiler's "define" flag).
+ *
+ * Example:
+ * <pre>
+ * var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};
+ * </pre>
+ *
+ * @type {Object<string, (string|number|boolean)>|undefined}
+ */
+goog.global.CLOSURE_UNCOMPILED_DEFINES;
+
+
+/**
+ * A hook for overriding the define values in uncompiled or compiled mode,
+ * like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code. In
+ * uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence.
+ *
+ * Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or
+ * string literals or the compiler will emit an error.
+ *
+ * While any @define value may be set, only those set with goog.define will be
+ * effective for uncompiled code.
+ *
+ * Example:
+ * <pre>
+ * var CLOSURE_DEFINES = {'goog.DEBUG': false} ;
+ * </pre>
+ *
+ * @type {Object<string, (string|number|boolean)>|undefined}
+ */
+goog.global.CLOSURE_DEFINES;
+
+
+/**
+ * Returns true if the specified value is not undefined.
+ * WARNING: Do not use this to test if an object has a property. Use the in
+ * operator instead.
+ *
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is defined.
+ */
+goog.isDef = function(val) {
+ // void 0 always evaluates to undefined and hence we do not need to depend on
+ // the definition of the global variable named 'undefined'.
+ return val !== void 0;
+};
+
+
+/**
+ * Builds an object structure for the provided namespace path, ensuring that
+ * names that already exist are not overwritten. For example:
+ * "a.b.c" -> a = {};a.b={};a.b.c={};
+ * Used by goog.provide and goog.exportSymbol.
+ * @param {string} name name of the object that this file defines.
+ * @param {*=} opt_object the object to expose at the end of the path.
+ * @param {Object=} opt_objectToExportTo The object to add the path to; default
+ * is |goog.global|.
+ * @private
+ */
+goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) {
+ var parts = name.split('.');
+ var cur = opt_objectToExportTo || goog.global;
+
+ // Internet Explorer exhibits strange behavior when throwing errors from
+ // methods externed in this manner. See the testExportSymbolExceptions in
+ // base_test.html for an example.
+ if (!(parts[0] in cur) && cur.execScript) {
+ cur.execScript('var ' + parts[0]);
+ }
+
+ // Certain browsers cannot parse code in the form for((a in b); c;);
+ // This pattern is produced by the JSCompiler when it collapses the
+ // statement above into the conditional loop below. To prevent this from
+ // happening, use a for-loop and reserve the init logic as below.
+
+ // Parentheses added to eliminate strict JS warning in Firefox.
+ for (var part; parts.length && (part = parts.shift());) {
+ if (!parts.length && goog.isDef(opt_object)) {
+ // last part and we have an object; use it
+ cur[part] = opt_object;
+ } else if (cur[part]) {
+ cur = cur[part];
+ } else {
+ cur = cur[part] = {};
+ }
+ }
+};
+
+
+/**
+ * Defines a named value. In uncompiled mode, the value is retrieved from
+ * CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and
+ * has the property specified, and otherwise used the defined defaultValue.
+ * When compiled the default can be overridden using the compiler
+ * options or the value set in the CLOSURE_DEFINES object.
+ *
+ * @param {string} name The distinguished name to provide.
+ * @param {string|number|boolean} defaultValue
+ */
+goog.define = function(name, defaultValue) {
+ var value = defaultValue;
+ if (!COMPILED) {
+ if (goog.global.CLOSURE_UNCOMPILED_DEFINES &&
+ Object.prototype.hasOwnProperty.call(
+ goog.global.CLOSURE_UNCOMPILED_DEFINES, name)) {
+ value = goog.global.CLOSURE_UNCOMPILED_DEFINES[name];
+ } else if (
+ goog.global.CLOSURE_DEFINES &&
+ Object.prototype.hasOwnProperty.call(
+ goog.global.CLOSURE_DEFINES, name)) {
+ value = goog.global.CLOSURE_DEFINES[name];
+ }
+ }
+ goog.exportPath_(name, value);
+};
+
+
+/**
+ * @define {boolean} DEBUG is provided as a convenience so that debugging code
+ * that should not be included in a production js_binary can be easily stripped
+ * by specifying --define goog.DEBUG=false to the JSCompiler. For example, most
+ * toString() methods should be declared inside an "if (goog.DEBUG)" conditional
+ * because they are generally used for debugging purposes and it is difficult
+ * for the JSCompiler to statically determine whether they are used.
+ */
+goog.define('goog.DEBUG', true);
+
+
+/**
+ * @define {string} LOCALE defines the locale being used for compilation. It is
+ * used to select locale specific data to be compiled in js binary. BUILD rule
+ * can specify this value by "--define goog.LOCALE=<locale_name>" as JSCompiler
+ * option.
+ *
+ * Take into account that the locale code format is important. You should use
+ * the canonical Unicode format with hyphen as a delimiter. Language must be
+ * lowercase, Language Script - Capitalized, Region - UPPERCASE.
+ * There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.
+ *
+ * See more info about locale codes here:
+ * http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers
+ *
+ * For language codes you should use values defined by ISO 693-1. See it here
+ * http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from
+ * this rule: the Hebrew language. For legacy reasons the old code (iw) should
+ * be used instead of the new code (he), see http://wiki/Main/IIISynonyms.
+ */
+goog.define('goog.LOCALE', 'en'); // default to en
+
+
+/**
+ * @define {boolean} Whether this code is running on trusted sites.
+ *
+ * On untrusted sites, several native functions can be defined or overridden by
+ * external libraries like Prototype, Datejs, and JQuery and setting this flag
+ * to false forces closure to use its own implementations when possible.
+ *
+ * If your JavaScript can be loaded by a third party site and you are wary about
+ * relying on non-standard implementations, specify
+ * "--define goog.TRUSTED_SITE=false" to the JSCompiler.
+ */
+goog.define('goog.TRUSTED_SITE', true);
+
+
+/**
+ * @define {boolean} Whether a project is expected to be running in strict mode.
+ *
+ * This define can be used to trigger alternate implementations compatible with
+ * running in EcmaScript Strict mode or warn about unavailable functionality.
+ * @see https://goo.gl/PudQ4y
+ *
+ */
+goog.define('goog.STRICT_MODE_COMPATIBLE', false);
+
+
+/**
+ * @define {boolean} Whether code that calls {@link goog.setTestOnly} should
+ * be disallowed in the compilation unit.
+ */
+goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG);
+
+
+/**
+ * @define {boolean} Whether to use a Chrome app CSP-compliant method for
+ * loading scripts via goog.require. @see appendScriptSrcNode_.
+ */
+goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false);
+
+
+/**
+ * Defines a namespace in Closure.
+ *
+ * A namespace may only be defined once in a codebase. It may be defined using
+ * goog.provide() or goog.module().
+ *
+ * The presence of one or more goog.provide() calls in a file indicates
+ * that the file defines the given objects/namespaces.
+ * Provided symbols must not be null or undefined.
+ *
+ * In addition, goog.provide() creates the object stubs for a namespace
+ * (for example, goog.provide("goog.foo.bar") will create the object
+ * goog.foo.bar if it does not already exist).
+ *
+ * Build tools also scan for provide/require/module statements
+ * to discern dependencies, build dependency files (see deps.js), etc.
+ *
+ * @see goog.require
+ * @see goog.module
+ * @param {string} name Namespace provided by this file in the form
+ * "goog.package.part".
+ */
+goog.provide = function(name) {
+ if (goog.isInModuleLoader_()) {
+ throw Error('goog.provide can not be used within a goog.module.');
+ }
+ if (!COMPILED) {
+ // Ensure that the same namespace isn't provided twice.
+ // A goog.module/goog.provide maps a goog.require to a specific file
+ if (goog.isProvided_(name)) {
+ throw Error('Namespace "' + name + '" already declared.');
+ }
+ }
+
+ goog.constructNamespace_(name);
+};
+
+
+/**
+ * @param {string} name Namespace provided by this file in the form
+ * "goog.package.part".
+ * @param {Object=} opt_obj The object to embed in the namespace.
+ * @private
+ */
+goog.constructNamespace_ = function(name, opt_obj) {
+ if (!COMPILED) {
+ delete goog.implicitNamespaces_[name];
+
+ var namespace = name;
+ while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {
+ if (goog.getObjectByName(namespace)) {
+ break;
+ }
+ goog.implicitNamespaces_[namespace] = true;
+ }
+ }
+
+ goog.exportPath_(name, opt_obj);
+};
+
+
+/**
+ * Module identifier validation regexp.
+ * Note: This is a conservative check, it is very possible to be more lenient,
+ * the primary exclusion here is "/" and "\" and a leading ".", these
+ * restrictions are intended to leave the door open for using goog.require
+ * with relative file paths rather than module identifiers.
+ * @private
+ */
+goog.VALID_MODULE_RE_ = /^[a-zA-Z_$][a-zA-Z0-9._$]*$/;
+
+
+/**
+ * Defines a module in Closure.
+ *
+ * Marks that this file must be loaded as a module and claims the namespace.
+ *
+ * A namespace may only be defined once in a codebase. It may be defined using
+ * goog.provide() or goog.module().
+ *
+ * goog.module() has three requirements:
+ * - goog.module may not be used in the same file as goog.provide.
+ * - goog.module must be the first statement in the file.
+ * - only one goog.module is allowed per file.
+ *
+ * When a goog.module annotated file is loaded, it is enclosed in
+ * a strict function closure. This means that:
+ * - any variables declared in a goog.module file are private to the file
+ * (not global), though the compiler is expected to inline the module.
+ * - The code must obey all the rules of "strict" JavaScript.
+ * - the file will be marked as "use strict"
+ *
+ * NOTE: unlike goog.provide, goog.module does not declare any symbols by
+ * itself. If declared symbols are desired, use
+ * goog.module.declareLegacyNamespace().
+ *
+ *
+ * See the public goog.module proposal: http://goo.gl/Va1hin
+ *
+ * @param {string} name Namespace provided by this file in the form
+ * "goog.package.part", is expected but not required.
+ */
+goog.module = function(name) {
+ if (!goog.isString(name) || !name ||
+ name.search(goog.VALID_MODULE_RE_) == -1) {
+ throw Error('Invalid module identifier');
+ }
+ if (!goog.isInModuleLoader_()) {
+ throw Error('Module ' + name + ' has been loaded incorrectly.');
+ }
+ if (goog.moduleLoaderState_.moduleName) {
+ throw Error('goog.module may only be called once per module.');
+ }
+
+ // Store the module name for the loader.
+ goog.moduleLoaderState_.moduleName = name;
+ if (!COMPILED) {
+ // Ensure that the same namespace isn't provided twice.
+ // A goog.module/goog.provide maps a goog.require to a specific file
+ if (goog.isProvided_(name)) {
+ throw Error('Namespace "' + name + '" already declared.');
+ }
+ delete goog.implicitNamespaces_[name];
+ }
+};
+
+
+/**
+ * @param {string} name The module identifier.
+ * @return {?} The module exports for an already loaded module or null.
+ *
+ * Note: This is not an alternative to goog.require, it does not
+ * indicate a hard dependency, instead it is used to indicate
+ * an optional dependency or to access the exports of a module
+ * that has already been loaded.
+ * @suppress {missingProvide}
+ */
+goog.module.get = function(name) {
+ return goog.module.getInternal_(name);
+};
+
+
+/**
+ * @param {string} name The module identifier.
+ * @return {?} The module exports for an already loaded module or null.
+ * @private
+ */
+goog.module.getInternal_ = function(name) {
+ if (!COMPILED) {
+ if (goog.isProvided_(name)) {
+ // goog.require only return a value with-in goog.module files.
+ return name in goog.loadedModules_ ? goog.loadedModules_[name] :
+ goog.getObjectByName(name);
+ } else {
+ return null;
+ }
+ }
+};
+
+
+/**
+ * @private {?{moduleName: (string|undefined), declareLegacyNamespace:boolean}}
+ */
+goog.moduleLoaderState_ = null;
+
+
+/**
+ * @private
+ * @return {boolean} Whether a goog.module is currently being initialized.
+ */
+goog.isInModuleLoader_ = function() {
+ return goog.moduleLoaderState_ != null;
+};
+
+
+/**
+ * Provide the module's exports as a globally accessible object under the
+ * module's declared name. This is intended to ease migration to goog.module
+ * for files that have existing usages.
+ * @suppress {missingProvide}
+ */
+goog.module.declareLegacyNamespace = function() {
+ if (!COMPILED && !goog.isInModuleLoader_()) {
+ throw new Error(
+ 'goog.module.declareLegacyNamespace must be called from ' +
+ 'within a goog.module');
+ }
+ if (!COMPILED && !goog.moduleLoaderState_.moduleName) {
+ throw Error(
+ 'goog.module must be called prior to ' +
+ 'goog.module.declareLegacyNamespace.');
+ }
+ goog.moduleLoaderState_.declareLegacyNamespace = true;
+};
+
+
+/**
+ * Marks that the current file should only be used for testing, and never for
+ * live code in production.
+ *
+ * In the case of unit tests, the message may optionally be an exact namespace
+ * for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra
+ * provide (if not explicitly defined in the code).
+ *
+ * @param {string=} opt_message Optional message to add to the error that's
+ * raised when used in production code.
+ */
+goog.setTestOnly = function(opt_message) {
+ if (goog.DISALLOW_TEST_ONLY_CODE) {
+ opt_message = opt_message || '';
+ throw Error(
+ 'Importing test-only code into non-debug environment' +
+ (opt_message ? ': ' + opt_message : '.'));
+ }
+};
+
+
+/**
+ * Forward declares a symbol. This is an indication to the compiler that the
+ * symbol may be used in the source yet is not required and may not be provided
+ * in compilation.
+ *
+ * The most common usage of forward declaration is code that takes a type as a
+ * function parameter but does not need to require it. By forward declaring
+ * instead of requiring, no hard dependency is made, and (if not required
+ * elsewhere) the namespace may never be required and thus, not be pulled
+ * into the JavaScript binary. If it is required elsewhere, it will be type
+ * checked as normal.
+ *
+ *
+ * @param {string} name The namespace to forward declare in the form of
+ * "goog.package.part".
+ */
+goog.forwardDeclare = function(name) {};
+
+
+/**
+ * Forward declare type information. Used to assign types to goog.global
+ * referenced object that would otherwise result in unknown type references
+ * and thus block property disambiguation.
+ */
+goog.forwardDeclare('Document');
+goog.forwardDeclare('HTMLScriptElement');
+goog.forwardDeclare('XMLHttpRequest');
+
+
+if (!COMPILED) {
+ /**
+ * Check if the given name has been goog.provided. This will return false for
+ * names that are available only as implicit namespaces.
+ * @param {string} name name of the object to look for.
+ * @return {boolean} Whether the name has been provided.
+ * @private
+ */
+ goog.isProvided_ = function(name) {
+ return (name in goog.loadedModules_) ||
+ (!goog.implicitNamespaces_[name] &&
+ goog.isDefAndNotNull(goog.getObjectByName(name)));
+ };
+
+ /**
+ * Namespaces implicitly defined by goog.provide. For example,
+ * goog.provide('goog.events.Event') implicitly declares that 'goog' and
+ * 'goog.events' must be namespaces.
+ *
+ * @type {!Object<string, (boolean|undefined)>}
+ * @private
+ */
+ goog.implicitNamespaces_ = {'goog.module': true};
+
+ // NOTE: We add goog.module as an implicit namespace as goog.module is defined
+ // here and because the existing module package has not been moved yet out of
+ // the goog.module namespace. This satisifies both the debug loader and
+ // ahead-of-time dependency management.
+}
+
+
+/**
+ * Returns an object based on its fully qualified external name. The object
+ * is not found if null or undefined. If you are using a compilation pass that
+ * renames property names beware that using this function will not find renamed
+ * properties.
+ *
+ * @param {string} name The fully qualified name.
+ * @param {Object=} opt_obj The object within which to look; default is
+ * |goog.global|.
+ * @return {?} The value (object or primitive) or, if not found, null.
+ */
+goog.getObjectByName = function(name, opt_obj) {
+ var parts = name.split('.');
+ var cur = opt_obj || goog.global;
+ for (var part; part = parts.shift();) {
+ if (goog.isDefAndNotNull(cur[part])) {
+ cur = cur[part];
+ } else {
+ return null;
+ }
+ }
+ return cur;
+};
+
+
+/**
+ * Globalizes a whole namespace, such as goog or goog.lang.
+ *
+ * @param {!Object} obj The namespace to globalize.
+ * @param {Object=} opt_global The object to add the properties to.
+ * @deprecated Properties may be explicitly exported to the global scope, but
+ * this should no longer be done in bulk.
+ */
+goog.globalize = function(obj, opt_global) {
+ var global = opt_global || goog.global;
+ for (var x in obj) {
+ global[x] = obj[x];
+ }
+};
+
+
+/**
+ * Adds a dependency from a file to the files it requires.
+ * @param {string} relPath The path to the js file.
+ * @param {!Array<string>} provides An array of strings with
+ * the names of the objects this file provides.
+ * @param {!Array<string>} requires An array of strings with
+ * the names of the objects this file requires.
+ * @param {boolean|!Object<string>=} opt_loadFlags Parameters indicating
+ * how the file must be loaded. The boolean 'true' is equivalent
+ * to {'module': 'goog'} for backwards-compatibility. Valid properties
+ * and values include {'module': 'goog'} and {'lang': 'es6'}.
+ */
+goog.addDependency = function(relPath, provides, requires, opt_loadFlags) {
+ if (goog.DEPENDENCIES_ENABLED) {
+ var provide, require;
+ var path = relPath.replace(/\\/g, '/');
+ var deps = goog.dependencies_;
+ if (!opt_loadFlags || typeof opt_loadFlags === 'boolean') {
+ opt_loadFlags = opt_loadFlags ? {'module': 'goog'} : {};
+ }
+ for (var i = 0; provide = provides[i]; i++) {
+ deps.nameToPath[provide] = path;
+ deps.loadFlags[path] = opt_loadFlags;
+ }
+ for (var j = 0; require = requires[j]; j++) {
+ if (!(path in deps.requires)) {
+ deps.requires[path] = {};
+ }
+ deps.requires[path][require] = true;
+ }
+ }
+};
+
+
+
+
+// NOTE(nnaze): The debug DOM loader was included in base.js as an original way
+// to do "debug-mode" development. The dependency system can sometimes be
+// confusing, as can the debug DOM loader's asynchronous nature.
+//
+// With the DOM loader, a call to goog.require() is not blocking -- the script
+// will not load until some point after the current script. If a namespace is
+// needed at runtime, it needs to be defined in a previous script, or loaded via
+// require() with its registered dependencies.
+//
+// User-defined namespaces may need their own deps file. For a reference on
+// creating a deps file, see:
+// Externally: https://developers.google.com/closure/library/docs/depswriter
+//
+// Because of legacy clients, the DOM loader can't be easily removed from
+// base.js. Work is being done to make it disableable or replaceable for
+// different environments (DOM-less JavaScript interpreters like Rhino or V8,
+// for example). See bootstrap/ for more information.
+
+
+/**
+ * @define {boolean} Whether to enable the debug loader.
+ *
+ * If enabled, a call to goog.require() will attempt to load the namespace by
+ * appending a script tag to the DOM (if the namespace has been registered).
+ *
+ * If disabled, goog.require() will simply assert that the namespace has been
+ * provided (and depend on the fact that some outside tool correctly ordered
+ * the script).
+ */
+goog.define('goog.ENABLE_DEBUG_LOADER', true);
+
+
+/**
+ * @param {string} msg
+ * @private
+ */
+goog.logToConsole_ = function(msg) {
+ if (goog.global.console) {
+ goog.global.console['error'](msg);
+ }
+};
+
+
+/**
+ * Implements a system for the dynamic resolution of dependencies that works in
+ * parallel with the BUILD system. Note that all calls to goog.require will be
+ * stripped by the JSCompiler when the --process_closure_primitives option is
+ * used.
+ * @see goog.provide
+ * @param {string} name Namespace to include (as was given in goog.provide()) in
+ * the form "goog.package.part".
+ * @return {?} If called within a goog.module file, the associated namespace or
+ * module otherwise null.
+ */
+goog.require = function(name) {
+ // If the object already exists we do not need do do anything.
+ if (!COMPILED) {
+ if (goog.ENABLE_DEBUG_LOADER && goog.IS_OLD_IE_) {
+ goog.maybeProcessDeferredDep_(name);
+ }
+
+ if (goog.isProvided_(name)) {
+ if (goog.isInModuleLoader_()) {
+ return goog.module.getInternal_(name);
+ } else {
+ return null;
+ }
+ }
+
+ if (goog.ENABLE_DEBUG_LOADER) {
+ var path = goog.getPathFromDeps_(name);
+ if (path) {
+ goog.writeScripts_(path);
+ return null;
+ }
+ }
+
+ var errorMessage = 'goog.require could not find: ' + name;
+ goog.logToConsole_(errorMessage);
+
+ throw Error(errorMessage);
+ }
+};
+
+
+/**
+ * Path for included scripts.
+ * @type {string}
+ */
+goog.basePath = '';
+
+
+/**
+ * A hook for overriding the base path.
+ * @type {string|undefined}
+ */
+goog.global.CLOSURE_BASE_PATH;
+
+
+/**
+ * Whether to write out Closure's deps file. By default, the deps are written.
+ * @type {boolean|undefined}
+ */
+goog.global.CLOSURE_NO_DEPS;
+
+
+/**
+ * A function to import a single script. This is meant to be overridden when
+ * Closure is being run in non-HTML contexts, such as web workers. It's defined
+ * in the global scope so that it can be set before base.js is loaded, which
+ * allows deps.js to be imported properly.
+ *
+ * The function is passed the script source, which is a relative URI. It should
+ * return true if the script was imported, false otherwise.
+ * @type {(function(string): boolean)|undefined}
+ */
+goog.global.CLOSURE_IMPORT_SCRIPT;
+
+
+/**
+ * Null function used for default values of callbacks, etc.
+ * @return {void} Nothing.
+ */
+goog.nullFunction = function() {};
+
+
+/**
+ * When defining a class Foo with an abstract method bar(), you can do:
+ * Foo.prototype.bar = goog.abstractMethod
+ *
+ * Now if a subclass of Foo fails to override bar(), an error will be thrown
+ * when bar() is invoked.
+ *
+ * Note: This does not take the name of the function to override as an argument
+ * because that would make it more difficult to obfuscate our JavaScript code.
+ *
+ * @type {!Function}
+ * @throws {Error} when invoked to indicate the method should be overridden.
+ */
+goog.abstractMethod = function() {
+ throw Error('unimplemented abstract method');
+};
+
+
+/**
+ * Adds a {@code getInstance} static method that always returns the same
+ * instance object.
+ * @param {!Function} ctor The constructor for the class to add the static
+ * method to.
+ */
+goog.addSingletonGetter = function(ctor) {
+ ctor.getInstance = function() {
+ if (ctor.instance_) {
+ return ctor.instance_;
+ }
+ if (goog.DEBUG) {
+ // NOTE: JSCompiler can't optimize away Array#push.
+ goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;
+ }
+ return ctor.instance_ = new ctor;
+ };
+};
+
+
+/**
+ * All singleton classes that have been instantiated, for testing. Don't read
+ * it directly, use the {@code goog.testing.singleton} module. The compiler
+ * removes this variable if unused.
+ * @type {!Array<!Function>}
+ * @private
+ */
+goog.instantiatedSingletons_ = [];
+
+
+/**
+ * @define {boolean} Whether to load goog.modules using {@code eval} when using
+ * the debug loader. This provides a better debugging experience as the
+ * source is unmodified and can be edited using Chrome Workspaces or similar.
+ * However in some environments the use of {@code eval} is banned
+ * so we provide an alternative.
+ */
+goog.define('goog.LOAD_MODULE_USING_EVAL', true);
+
+
+/**
+ * @define {boolean} Whether the exports of goog.modules should be sealed when
+ * possible.
+ */
+goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG);
+
+
+/**
+ * The registry of initialized modules:
+ * the module identifier to module exports map.
+ * @private @const {!Object<string, ?>}
+ */
+goog.loadedModules_ = {};
+
+
+/**
+ * True if goog.dependencies_ is available.
+ * @const {boolean}
+ */
+goog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;
+
+
+/**
+ * @define {string} How to decide whether to transpile. Valid values
+ * are 'always', 'never', and 'detect'. The default ('detect') is to
+ * use feature detection to determine which language levels need
+ * transpilation.
+ */
+// NOTE(user): we could expand this to accept a language level to bypass
+// detection: e.g. goog.TRANSPILE == 'es5' would transpile ES6 files but
+// would leave ES3 and ES5 files alone.
+goog.define('goog.TRANSPILE', 'detect');
+
+
+/**
+ * @define {string} Path to the transpiler. Executing the script at this
+ * path (relative to base.js) should define a function $jscomp.transpile.
+ */
+goog.define('goog.TRANSPILER', 'transpile.js');
+
+
+if (goog.DEPENDENCIES_ENABLED) {
+ /**
+ * This object is used to keep track of dependencies and other data that is
+ * used for loading scripts.
+ * @private
+ * @type {{
+ * loadFlags: !Object<string, !Object<string, string>>,
+ * nameToPath: !Object<string, string>,
+ * requires: !Object<string, !Object<string, boolean>>,
+ * visited: !Object<string, boolean>,
+ * written: !Object<string, boolean>,
+ * deferred: !Object<string, string>
+ * }}
+ */
+ goog.dependencies_ = {
+ loadFlags: {}, // 1 to 1
+
+ nameToPath: {}, // 1 to 1
+
+ requires: {}, // 1 to many
+
+ // Used when resolving dependencies to prevent us from visiting file twice.
+ visited: {},
+
+ written: {}, // Used to keep track of script files we have written.
+
+ deferred: {} // Used to track deferred module evaluations in old IEs
+ };
+
+
+ /**
+ * Tries to detect whether is in the context of an HTML document.
+ * @return {boolean} True if it looks like HTML document.
+ * @private
+ */
+ goog.inHtmlDocument_ = function() {
+ /** @type {Document} */
+ var doc = goog.global.document;
+ return doc != null && 'write' in doc; // XULDocument misses write.
+ };
+
+
+ /**
+ * Tries to detect the base path of base.js script that bootstraps Closure.
+ * @private
+ */
+ goog.findBasePath_ = function() {
+ if (goog.isDef(goog.global.CLOSURE_BASE_PATH)) {
+ goog.basePath = goog.global.CLOSURE_BASE_PATH;
+ return;
+ } else if (!goog.inHtmlDocument_()) {
+ return;
+ }
+ /** @type {Document} */
+ var doc = goog.global.document;
+ var scripts = doc.getElementsByTagName('SCRIPT');
+ // Search backwards since the current script is in almost all cases the one
+ // that has base.js.
+ for (var i = scripts.length - 1; i >= 0; --i) {
+ var script = /** @type {!HTMLScriptElement} */ (scripts[i]);
+ var src = script.src;
+ var qmark = src.lastIndexOf('?');
+ var l = qmark == -1 ? src.length : qmark;
+ if (src.substr(l - 7, 7) == 'base.js') {
+ goog.basePath = src.substr(0, l - 7);
+ return;
+ }
+ }
+ };
+
+
+ /**
+ * Imports a script if, and only if, that script hasn't already been imported.
+ * (Must be called at execution time)
+ * @param {string} src Script source.
+ * @param {string=} opt_sourceText The optionally source text to evaluate
+ * @private
+ */
+ goog.importScript_ = function(src, opt_sourceText) {
+ var importScript =
+ goog.global.CLOSURE_IMPORT_SCRIPT || goog.writeScriptTag_;
+ if (importScript(src, opt_sourceText)) {
+ goog.dependencies_.written[src] = true;
+ }
+ };
+
+
+ /**
+ * Whether the browser is IE9 or earlier, which needs special handling
+ * for deferred modules.
+ * @const @private {boolean}
+ */
+ goog.IS_OLD_IE_ =
+ !!(!goog.global.atob && goog.global.document && goog.global.document.all);
+
+
+ /**
+ * Given a URL initiate retrieval and execution of a script that needs
+ * pre-processing.
+ * @param {string} src Script source URL.
+ * @param {boolean} isModule Whether this is a goog.module.
+ * @param {boolean} needsTranspile Whether this source needs transpilation.
+ * @private
+ */
+ goog.importProcessedScript_ = function(src, isModule, needsTranspile) {
+ // In an attempt to keep browsers from timing out loading scripts using
+ // synchronous XHRs, put each load in its own script block.
+ var bootstrap = 'goog.retrieveAndExec_("' + src + '", ' + isModule + ', ' +
+ needsTranspile + ');';
+
+ goog.importScript_('', bootstrap);
+ };
+
+
+ /** @private {!Array<string>} */
+ goog.queuedModules_ = [];
+
+
+ /**
+ * Return an appropriate module text. Suitable to insert into
+ * a script tag (that is unescaped).
+ * @param {string} srcUrl
+ * @param {string} scriptText
+ * @return {string}
+ * @private
+ */
+ goog.wrapModule_ = function(srcUrl, scriptText) {
+ if (!goog.LOAD_MODULE_USING_EVAL || !goog.isDef(goog.global.JSON)) {
+ return '' +
+ 'goog.loadModule(function(exports) {' +
+ '"use strict";' + scriptText +
+ '\n' + // terminate any trailing single line comment.
+ ';return exports' +
+ '});' +
+ '\n//# sourceURL=' + srcUrl + '\n';
+ } else {
+ return '' +
+ 'goog.loadModule(' +
+ goog.global.JSON.stringify(
+ scriptText + '\n//# sourceURL=' + srcUrl + '\n') +
+ ');';
+ }
+ };
+
+ // On IE9 and earlier, it is necessary to handle
+ // deferred module loads. In later browsers, the
+ // code to be evaluated is simply inserted as a script
+ // block in the correct order. To eval deferred
+ // code at the right time, we piggy back on goog.require to call
+ // goog.maybeProcessDeferredDep_.
+ //
+ // The goog.requires are used both to bootstrap
+ // the loading process (when no deps are available) and
+ // declare that they should be available.
+ //
+ // Here we eval the sources, if all the deps are available
+ // either already eval'd or goog.require'd. This will
+ // be the case when all the dependencies have already
+ // been loaded, and the dependent module is loaded.
+ //
+ // But this alone isn't sufficient because it is also
+ // necessary to handle the case where there is no root
+ // that is not deferred. For that there we register for an event
+ // and trigger goog.loadQueuedModules_ handle any remaining deferred
+ // evaluations.
+
+ /**
+ * Handle any remaining deferred goog.module evals.
+ * @private
+ */
+ goog.loadQueuedModules_ = function() {
+ var count = goog.queuedModules_.length;
+ if (count > 0) {
+ var queue = goog.queuedModules_;
+ goog.queuedModules_ = [];
+ for (var i = 0; i < count; i++) {
+ var path = queue[i];
+ goog.maybeProcessDeferredPath_(path);
+ }
+ }
+ };
+
+
+ /**
+ * Eval the named module if its dependencies are
+ * available.
+ * @param {string} name The module to load.
+ * @private
+ */
+ goog.maybeProcessDeferredDep_ = function(name) {
+ if (goog.isDeferredModule_(name) && goog.allDepsAreAvailable_(name)) {
+ var path = goog.getPathFromDeps_(name);
+ goog.maybeProcessDeferredPath_(goog.basePath + path);
+ }
+ };
+
+ /**
+ * @param {string} name The module to check.
+ * @return {boolean} Whether the name represents a
+ * module whose evaluation has been deferred.
+ * @private
+ */
+ goog.isDeferredModule_ = function(name) {
+ var path = goog.getPathFromDeps_(name);
+ var loadFlags = path && goog.dependencies_.loadFlags[path] || {};
+ if (path && (loadFlags['module'] == 'goog' ||
+ goog.needsTranspile_(loadFlags['lang']))) {
+ var abspath = goog.basePath + path;
+ return (abspath) in goog.dependencies_.deferred;
+ }
+ return false;
+ };
+
+ /**
+ * @param {string} name The module to check.
+ * @return {boolean} Whether the name represents a
+ * module whose declared dependencies have all been loaded
+ * (eval'd or a deferred module load)
+ * @private
+ */
+ goog.allDepsAreAvailable_ = function(name) {
+ var path = goog.getPathFromDeps_(name);
+ if (path && (path in goog.dependencies_.requires)) {
+ for (var requireName in goog.dependencies_.requires[path]) {
+ if (!goog.isProvided_(requireName) &&
+ !goog.isDeferredModule_(requireName)) {
+ return false;
+ }
+ }
+ }
+ return true;
+ };
+
+
+ /**
+ * @param {string} abspath
+ * @private
+ */
+ goog.maybeProcessDeferredPath_ = function(abspath) {
+ if (abspath in goog.dependencies_.deferred) {
+ var src = goog.dependencies_.deferred[abspath];
+ delete goog.dependencies_.deferred[abspath];
+ goog.globalEval(src);
+ }
+ };
+
+
+ /**
+ * Load a goog.module from the provided URL. This is not a general purpose
+ * code loader and does not support late loading code, that is it should only
+ * be used during page load. This method exists to support unit tests and
+ * "debug" loaders that would otherwise have inserted script tags. Under the
+ * hood this needs to use a synchronous XHR and is not recommeneded for
+ * production code.
+ *
+ * The module's goog.requires must have already been satisified; an exception
+ * will be thrown if this is not the case. This assumption is that no
+ * "deps.js" file exists, so there is no way to discover and locate the
+ * module-to-be-loaded's dependencies and no attempt is made to do so.
+ *
+ * There should only be one attempt to load a module. If
+ * "goog.loadModuleFromUrl" is called for an already loaded module, an
+ * exception will be throw.
+ *
+ * @param {string} url The URL from which to attempt to load the goog.module.
+ */
+ goog.loadModuleFromUrl = function(url) {
+ // Because this executes synchronously, we don't need to do any additional
+ // bookkeeping. When "goog.loadModule" the namespace will be marked as
+ // having been provided which is sufficient.
+ goog.retrieveAndExec_(url, true, false);
+ };
+
+
+ /**
+ * Writes a new script pointing to {@code src} directly into the DOM.
+ *
+ * NOTE: This method is not CSP-compliant. @see goog.appendScriptSrcNode_ for
+ * the fallback mechanism.
+ *
+ * @param {string} src The script URL.
+ * @private
+ */
+ goog.writeScriptSrcNode_ = function(src) {
+ goog.global.document.write(
+ '<script type="text/javascript" src="' + src + '"></' +
+ 'script>');
+ };
+
+
+ /**
+ * Appends a new script node to the DOM using a CSP-compliant mechanism. This
+ * method exists as a fallback for document.write (which is not allowed in a
+ * strict CSP context, e.g., Chrome apps).
+ *
+ * NOTE: This method is not analogous to using document.write to insert a
+ * <script> tag; specifically, the user agent will execute a script added by
+ * document.write immediately after the current script block finishes
+ * executing, whereas the DOM-appended script node will not be executed until
+ * the entire document is parsed and executed. That is to say, this script is
+ * added to the end of the script execution queue.
+ *
+ * The page must not attempt to call goog.required entities until after the
+ * document has loaded, e.g., in or after the window.onload callback.
+ *
+ * @param {string} src The script URL.
+ * @private
+ */
+ goog.appendScriptSrcNode_ = function(src) {
+ /** @type {Document} */
+ var doc = goog.global.document;
+ var scriptEl =
+ /** @type {HTMLScriptElement} */ (doc.createElement('script'));
+ scriptEl.type = 'text/javascript';
+ scriptEl.src = src;
+ scriptEl.defer = false;
+ scriptEl.async = false;
+ doc.head.appendChild(scriptEl);
+ };
+
+
+ /**
+ * The default implementation of the import function. Writes a script tag to
+ * import the script.
+ *
+ * @param {string} src The script url.
+ * @param {string=} opt_sourceText The optionally source text to evaluate
+ * @return {boolean} True if the script was imported, false otherwise.
+ * @private
+ */
+ goog.writeScriptTag_ = function(src, opt_sourceText) {
+ if (goog.inHtmlDocument_()) {
+ /** @type {!HTMLDocument} */
+ var doc = goog.global.document;
+
+ // If the user tries to require a new symbol after document load,
+ // something has gone terribly wrong. Doing a document.write would
+ // wipe out the page. This does not apply to the CSP-compliant method
+ // of writing script tags.
+ if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&
+ doc.readyState == 'complete') {
+ // Certain test frameworks load base.js multiple times, which tries
+ // to write deps.js each time. If that happens, just fail silently.
+ // These frameworks wipe the page between each load of base.js, so this
+ // is OK.
+ var isDeps = /\bdeps.js$/.test(src);
+ if (isDeps) {
+ return false;
+ } else {
+ throw Error('Cannot write "' + src + '" after document load');
+ }
+ }
+
+ if (opt_sourceText === undefined) {
+ if (!goog.IS_OLD_IE_) {
+ if (goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING) {
+ goog.appendScriptSrcNode_(src);
+ } else {
+ goog.writeScriptSrcNode_(src);
+ }
+ } else {
+ var state = " onreadystatechange='goog.onScriptLoad_(this, " +
+ ++goog.lastNonModuleScriptIndex_ + ")' ";
+ doc.write(
+ '<script type="text/javascript" src="' + src + '"' + state +
+ '></' +
+ 'script>');
+ }
+ } else {
+ doc.write(
+ '<script type="text/javascript">' + opt_sourceText + '</' +
+ 'script>');
+ }
+ return true;
+ } else {
+ return false;
+ }
+ };
+
+
+ /**
+ * Determines whether the given language needs to be transpiled.
+ * @param {string} lang
+ * @return {boolean}
+ * @private
+ */
+ goog.needsTranspile_ = function(lang) {
+ if (goog.TRANSPILE == 'always') {
+ return true;
+ } else if (goog.TRANSPILE == 'never') {
+ return false;
+ } else if (!goog.transpiledLanguages_) {
+ goog.transpiledLanguages_ = {'es5': true, 'es6': true, 'es6-impl': true};
+ /** @preserveTry */
+ try {
+ // Perform some quick conformance checks, to distinguish
+ // between browsers that support es5, es6-impl, or es6.
+
+ // Identify ES3-only browsers by their incorrect treatment of commas.
+ goog.transpiledLanguages_['es5'] = eval('[1,].length!=1');
+
+ // As browsers mature, features will be moved from the full test
+ // into the impl test. This must happen before the corresponding
+ // features are changed in the Closure Compiler's FeatureSet object.
+
+ // Test 1: es6-impl [FF49, Edge 13, Chrome 49]
+ // (a) let/const keyword, (b) class expressions, (c) Map object,
+ // (d) iterable arguments, (e) spread operator
+ var es6implTest =
+ 'let a={};const X=class{constructor(){}x(z){return new Map([' +
+ '...arguments]).get(z[0])==3}};return new X().x([a,3])';
+
+ // Test 2: es6 [FF50 (?), Edge 14 (?), Chrome 50]
+ // (a) default params (specifically shadowing locals),
+ // (b) destructuring, (c) block-scoped functions,
+ // (d) for-of (const), (e) new.target/Reflect.construct
+ var es6fullTest =
+ 'class X{constructor(){if(new.target!=String)throw 1;this.x=42}}' +
+ 'let q=Reflect.construct(X,[],String);if(q.x!=42||!(q instanceof ' +
+ 'String))throw 1;for(const a of[2,3]){if(a==2)continue;function ' +
+ 'f(z={a}){let a=0;return z.a}{function f(){return 0;}}return f()' +
+ '==3}';
+
+ if (eval('(()=>{"use strict";' + es6implTest + '})()')) {
+ goog.transpiledLanguages_['es6-impl'] = false;
+ }
+ if (eval('(()=>{"use strict";' + es6fullTest + '})()')) {
+ goog.transpiledLanguages_['es6'] = false;
+ }
+ } catch (err) {
+ }
+ }
+ return !!goog.transpiledLanguages_[lang];
+ };
+
+
+ /** @private {?Object<string, boolean>} */
+ goog.transpiledLanguages_ = null;
+
+
+ /** @private {number} */
+ goog.lastNonModuleScriptIndex_ = 0;
+
+
+ /**
+ * A readystatechange handler for legacy IE
+ * @param {!HTMLScriptElement} script
+ * @param {number} scriptIndex
+ * @return {boolean}
+ * @private
+ */
+ goog.onScriptLoad_ = function(script, scriptIndex) {
+ // for now load the modules when we reach the last script,
+ // later allow more inter-mingling.
+ if (script.readyState == 'complete' &&
+ goog.lastNonModuleScriptIndex_ == scriptIndex) {
+ goog.loadQueuedModules_();
+ }
+ return true;
+ };
+
+ /**
+ * Resolves dependencies based on the dependencies added using addDependency
+ * and calls importScript_ in the correct order.
+ * @param {string} pathToLoad The path from which to start discovering
+ * dependencies.
+ * @private
+ */
+ goog.writeScripts_ = function(pathToLoad) {
+ /** @type {!Array<string>} The scripts we need to write this time. */
+ var scripts = [];
+ var seenScript = {};
+ var deps = goog.dependencies_;
+
+ /** @param {string} path */
+ function visitNode(path) {
+ if (path in deps.written) {
+ return;
+ }
+
+ // We have already visited this one. We can get here if we have cyclic
+ // dependencies.
+ if (path in deps.visited) {
+ return;
+ }
+
+ deps.visited[path] = true;
+
+ if (path in deps.requires) {
+ for (var requireName in deps.requires[path]) {
+ // If the required name is defined, we assume that it was already
+ // bootstrapped by other means.
+ if (!goog.isProvided_(requireName)) {
+ if (requireName in deps.nameToPath) {
+ visitNode(deps.nameToPath[requireName]);
+ } else {
+ throw Error('Undefined nameToPath for ' + requireName);
+ }
+ }
+ }
+ }
+
+ if (!(path in seenScript)) {
+ seenScript[path] = true;
+ scripts.push(path);
+ }
+ }
+
+ visitNode(pathToLoad);
+
+ // record that we are going to load all these scripts.
+ for (var i = 0; i < scripts.length; i++) {
+ var path = scripts[i];
+ goog.dependencies_.written[path] = true;
+ }
+
+ // If a module is loaded synchronously then we need to
+ // clear the current inModuleLoader value, and restore it when we are
+ // done loading the current "requires".
+ var moduleState = goog.moduleLoaderState_;
+ goog.moduleLoaderState_ = null;
+
+ for (var i = 0; i < scripts.length; i++) {
+ var path = scripts[i];
+ if (path) {
+ var loadFlags = deps.loadFlags[path] || {};
+ var needsTranspile = goog.needsTranspile_(loadFlags['lang']);
+ if (loadFlags['module'] == 'goog' || needsTranspile) {
+ goog.importProcessedScript_(
+ goog.basePath + path, loadFlags['module'] == 'goog',
+ needsTranspile);
+ } else {
+ goog.importScript_(goog.basePath + path);
+ }
+ } else {
+ goog.moduleLoaderState_ = moduleState;
+ throw Error('Undefined script input');
+ }
+ }
+
+ // restore the current "module loading state"
+ goog.moduleLoaderState_ = moduleState;
+ };
+
+
+ /**
+ * Looks at the dependency rules and tries to determine the script file that
+ * fulfills a particular rule.
+ * @param {string} rule In the form goog.namespace.Class or project.script.
+ * @return {?string} Url corresponding to the rule, or null.
+ * @private
+ */
+ goog.getPathFromDeps_ = function(rule) {
+ if (rule in goog.dependencies_.nameToPath) {
+ return goog.dependencies_.nameToPath[rule];
+ } else {
+ return null;
+ }
+ };
+
+ goog.findBasePath_();
+
+ // Allow projects to manage the deps files themselves.
+ if (!goog.global.CLOSURE_NO_DEPS) {
+ goog.importScript_(goog.basePath + 'deps.js');
+ }
+}
+
+
+/**
+ * @param {function(?):?|string} moduleDef The module definition.
+ */
+goog.loadModule = function(moduleDef) {
+ // NOTE: we allow function definitions to be either in the from
+ // of a string to eval (which keeps the original source intact) or
+ // in a eval forbidden environment (CSP) we allow a function definition
+ // which in its body must call {@code goog.module}, and return the exports
+ // of the module.
+ var previousState = goog.moduleLoaderState_;
+ try {
+ goog.moduleLoaderState_ = {
+ moduleName: undefined,
+ declareLegacyNamespace: false
+ };
+ var exports;
+ if (goog.isFunction(moduleDef)) {
+ exports = moduleDef.call(undefined, {});
+ } else if (goog.isString(moduleDef)) {
+ exports = goog.loadModuleFromSource_.call(undefined, moduleDef);
+ } else {
+ throw Error('Invalid module definition');
+ }
+
+ var moduleName = goog.moduleLoaderState_.moduleName;
+ if (!goog.isString(moduleName) || !moduleName) {
+ throw Error('Invalid module name \"' + moduleName + '\"');
+ }
+
+ // Don't seal legacy namespaces as they may be uses as a parent of
+ // another namespace
+ if (goog.moduleLoaderState_.declareLegacyNamespace) {
+ goog.constructNamespace_(moduleName, exports);
+ } else if (goog.SEAL_MODULE_EXPORTS && Object.seal) {
+ Object.seal(exports);
+ }
+
+ goog.loadedModules_[moduleName] = exports;
+ } finally {
+ goog.moduleLoaderState_ = previousState;
+ }
+};
+
+
+/**
+ * @private @const {function(string):?}
+ *
+ * The new type inference warns because this function has no formal
+ * parameters, but its jsdoc says that it takes one argument.
+ * (The argument is used via arguments[0], but NTI does not detect this.)
+ * @suppress {newCheckTypes}
+ */
+goog.loadModuleFromSource_ = function() {
+ // NOTE: we avoid declaring parameters or local variables here to avoid
+ // masking globals or leaking values into the module definition.
+ 'use strict';
+ var exports = {};
+ eval(arguments[0]);
+ return exports;
+};
+
+
+/**
+ * Normalize a file path by removing redundant ".." and extraneous "." file
+ * path components.
+ * @param {string} path
+ * @return {string}
+ * @private
+ */
+goog.normalizePath_ = function(path) {
+ var components = path.split('/');
+ var i = 0;
+ while (i < components.length) {
+ if (components[i] == '.') {
+ components.splice(i, 1);
+ } else if (
+ i && components[i] == '..' && components[i - 1] &&
+ components[i - 1] != '..') {
+ components.splice(--i, 2);
+ } else {
+ i++;
+ }
+ }
+ return components.join('/');
+};
+
+
+/**
+ * Loads file by synchronous XHR. Should not be used in production environments.
+ * @param {string} src Source URL.
+ * @return {?string} File contents, or null if load failed.
+ * @private
+ */
+goog.loadFileSync_ = function(src) {
+ if (goog.global.CLOSURE_LOAD_FILE_SYNC) {
+ return goog.global.CLOSURE_LOAD_FILE_SYNC(src);
+ } else {
+ try {
+ /** @type {XMLHttpRequest} */
+ var xhr = new goog.global['XMLHttpRequest']();
+ xhr.open('get', src, false);
+ xhr.send();
+ // NOTE: Successful http: requests have a status of 200, but successful
+ // file: requests may have a status of zero. Any other status, or a
+ // thrown exception (particularly in case of file: requests) indicates
+ // some sort of error, which we treat as a missing or unavailable file.
+ return xhr.status == 0 || xhr.status == 200 ? xhr.responseText : null;
+ } catch (err) {
+ // No need to rethrow or log, since errors should show up on their own.
+ return null;
+ }
+ }
+};
+
+
+/**
+ * Retrieve and execute a script that needs some sort of wrapping.
+ * @param {string} src Script source URL.
+ * @param {boolean} isModule Whether to load as a module.
+ * @param {boolean} needsTranspile Whether to transpile down to ES3.
+ * @private
+ */
+goog.retrieveAndExec_ = function(src, isModule, needsTranspile) {
+ if (!COMPILED) {
+ // The full but non-canonicalized URL for later use.
+ var originalPath = src;
+ // Canonicalize the path, removing any /./ or /../ since Chrome's debugging
+ // console doesn't auto-canonicalize XHR loads as it does <script> srcs.
+ src = goog.normalizePath_(src);
+
+ var importScript =
+ goog.global.CLOSURE_IMPORT_SCRIPT || goog.writeScriptTag_;
+
+ var scriptText = goog.loadFileSync_(src);
+ if (scriptText == null) {
+ throw new Error('Load of "' + src + '" failed');
+ }
+
+ if (needsTranspile) {
+ scriptText = goog.transpile_.call(goog.global, scriptText, src);
+ }
+
+ if (isModule) {
+ scriptText = goog.wrapModule_(src, scriptText);
+ } else {
+ scriptText += '\n//# sourceURL=' + src;
+ }
+ var isOldIE = goog.IS_OLD_IE_;
+ if (isOldIE) {
+ goog.dependencies_.deferred[originalPath] = scriptText;
+ goog.queuedModules_.push(originalPath);
+ } else {
+ importScript(src, scriptText);
+ }
+ }
+};
+
+
+/**
+ * Lazily retrieves the transpiler and applies it to the source.
+ * @param {string} code JS code.
+ * @param {string} path Path to the code.
+ * @return {string} The transpiled code.
+ * @private
+ */
+goog.transpile_ = function(code, path) {
+ var jscomp = goog.global['$jscomp'];
+ if (!jscomp) {
+ goog.global['$jscomp'] = jscomp = {};
+ }
+ var transpile = jscomp.transpile;
+ if (!transpile) {
+ var transpilerPath = goog.basePath + goog.TRANSPILER;
+ var transpilerCode = goog.loadFileSync_(transpilerPath);
+ if (transpilerCode) {
+ // This must be executed synchronously, since by the time we know we
+ // need it, we're about to load and write the ES6 code synchronously,
+ // so a normal script-tag load will be too slow.
+ eval(transpilerCode + '\n//# sourceURL=' + transpilerPath);
+ // Note: transpile.js reassigns goog.global['$jscomp'] so pull it again.
+ jscomp = goog.global['$jscomp'];
+ transpile = jscomp.transpile;
+ }
+ }
+ if (!transpile) {
+ // The transpiler is an optional component. If it's not available then
+ // replace it with a pass-through function that simply logs.
+ var suffix = ' requires transpilation but no transpiler was found.';
+ transpile = jscomp.transpile = function(code, path) {
+ // TODO(user): figure out some way to get this error to show up
+ // in test results, noting that the failure may occur in many
+ // different ways, including in loadModule() before the test
+ // runner even comes up.
+ goog.logToConsole_(path + suffix);
+ return code;
+ };
+ }
+ // Note: any transpilation errors/warnings will be logged to the console.
+ return transpile(code, path);
+};
+
+
+//==============================================================================
+// Language Enhancements
+//==============================================================================
+
+
+/**
+ * This is a "fixed" version of the typeof operator. It differs from the typeof
+ * operator in such a way that null returns 'null' and arrays return 'array'.
+ * @param {?} value The value to get the type of.
+ * @return {string} The name of the type.
+ */
+goog.typeOf = function(value) {
+ var s = typeof value;
+ if (s == 'object') {
+ if (value) {
+ // Check these first, so we can avoid calling Object.prototype.toString if
+ // possible.
+ //
+ // IE improperly marshals typeof across execution contexts, but a
+ // cross-context object will still return false for "instanceof Object".
+ if (value instanceof Array) {
+ return 'array';
+ } else if (value instanceof Object) {
+ return s;
+ }
+
+ // HACK: In order to use an Object prototype method on the arbitrary
+ // value, the compiler requires the value be cast to type Object,
+ // even though the ECMA spec explicitly allows it.
+ var className = Object.prototype.toString.call(
+ /** @type {!Object} */ (value));
+ // In Firefox 3.6, attempting to access iframe window objects' length
+ // property throws an NS_ERROR_FAILURE, so we need to special-case it
+ // here.
+ if (className == '[object Window]') {
+ return 'object';
+ }
+
+ // We cannot always use constructor == Array or instanceof Array because
+ // different frames have different Array objects. In IE6, if the iframe
+ // where the array was created is destroyed, the array loses its
+ // prototype. Then dereferencing val.splice here throws an exception, so
+ // we can't use goog.isFunction. Calling typeof directly returns 'unknown'
+ // so that will work. In this case, this function will return false and
+ // most array functions will still work because the array is still
+ // array-like (supports length and []) even though it has lost its
+ // prototype.
+ // Mark Miller noticed that Object.prototype.toString
+ // allows access to the unforgeable [[Class]] property.
+ // 15.2.4.2 Object.prototype.toString ( )
+ // When the toString method is called, the following steps are taken:
+ // 1. Get the [[Class]] property of this object.
+ // 2. Compute a string value by concatenating the three strings
+ // "[object ", Result(1), and "]".
+ // 3. Return Result(2).
+ // and this behavior survives the destruction of the execution context.
+ if ((className == '[object Array]' ||
+ // In IE all non value types are wrapped as objects across window
+ // boundaries (not iframe though) so we have to do object detection
+ // for this edge case.
+ typeof value.length == 'number' &&
+ typeof value.splice != 'undefined' &&
+ typeof value.propertyIsEnumerable != 'undefined' &&
+ !value.propertyIsEnumerable('splice')
+
+ )) {
+ return 'array';
+ }
+ // HACK: There is still an array case that fails.
+ // function ArrayImpostor() {}
+ // ArrayImpostor.prototype = [];
+ // var impostor = new ArrayImpostor;
+ // this can be fixed by getting rid of the fast path
+ // (value instanceof Array) and solely relying on
+ // (value && Object.prototype.toString.vall(value) === '[object Array]')
+ // but that would require many more function calls and is not warranted
+ // unless closure code is receiving objects from untrusted sources.
+
+ // IE in cross-window calls does not correctly marshal the function type
+ // (it appears just as an object) so we cannot use just typeof val ==
+ // 'function'. However, if the object has a call property, it is a
+ // function.
+ if ((className == '[object Function]' ||
+ typeof value.call != 'undefined' &&
+ typeof value.propertyIsEnumerable != 'undefined' &&
+ !value.propertyIsEnumerable('call'))) {
+ return 'function';
+ }
+
+ } else {
+ return 'null';
+ }
+
+ } else if (s == 'function' && typeof value.call == 'undefined') {
+ // In Safari typeof nodeList returns 'function', and on Firefox typeof
+ // behaves similarly for HTML{Applet,Embed,Object}, Elements and RegExps. We
+ // would like to return object for those and we can detect an invalid
+ // function by making sure that the function object has a call method.
+ return 'object';
+ }
+ return s;
+};
+
+
+/**
+ * Returns true if the specified value is null.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is null.
+ */
+goog.isNull = function(val) {
+ return val === null;
+};
+
+
+/**
+ * Returns true if the specified value is defined and not null.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is defined and not null.
+ */
+goog.isDefAndNotNull = function(val) {
+ // Note that undefined == null.
+ return val != null;
+};
+
+
+/**
+ * Returns true if the specified value is an array.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is an array.
+ */
+goog.isArray = function(val) {
+ return goog.typeOf(val) == 'array';
+};
+
+
+/**
+ * Returns true if the object looks like an array. To qualify as array like
+ * the value needs to be either a NodeList or an object with a Number length
+ * property. As a special case, a function value is not array like, because its
+ * length property is fixed to correspond to the number of expected arguments.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is an array.
+ */
+goog.isArrayLike = function(val) {
+ var type = goog.typeOf(val);
+ // We do not use goog.isObject here in order to exclude function values.
+ return type == 'array' || type == 'object' && typeof val.length == 'number';
+};
+
+
+/**
+ * Returns true if the object looks like a Date. To qualify as Date-like the
+ * value needs to be an object and have a getFullYear() function.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is a like a Date.
+ */
+goog.isDateLike = function(val) {
+ return goog.isObject(val) && typeof val.getFullYear == 'function';
+};
+
+
+/**
+ * Returns true if the specified value is a string.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is a string.
+ */
+goog.isString = function(val) {
+ return typeof val == 'string';
+};
+
+
+/**
+ * Returns true if the specified value is a boolean.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is boolean.
+ */
+goog.isBoolean = function(val) {
+ return typeof val == 'boolean';
+};
+
+
+/**
+ * Returns true if the specified value is a number.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is a number.
+ */
+goog.isNumber = function(val) {
+ return typeof val == 'number';
+};
+
+
+/**
+ * Returns true if the specified value is a function.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is a function.
+ */
+goog.isFunction = function(val) {
+ return goog.typeOf(val) == 'function';
+};
+
+
+/**
+ * Returns true if the specified value is an object. This includes arrays and
+ * functions.
+ * @param {?} val Variable to test.
+ * @return {boolean} Whether variable is an object.
+ */
+goog.isObject = function(val) {
+ var type = typeof val;
+ return type == 'object' && val != null || type == 'function';
+ // return Object(val) === val also works, but is slower, especially if val is
+ // not an object.
+};
+
+
+/**
+ * Gets a unique ID for an object. This mutates the object so that further calls
+ * with the same object as a parameter returns the same value. The unique ID is
+ * guaranteed to be unique across the current session amongst objects that are
+ * passed into {@code getUid}. There is no guarantee that the ID is unique or
+ * consistent across sessions. It is unsafe to generate unique ID for function
+ * prototypes.
+ *
+ * @param {Object} obj The object to get the unique ID for.
+ * @return {number} The unique ID for the object.
+ */
+goog.getUid = function(obj) {
+ // TODO(arv): Make the type stricter, do not accept null.
+
+ // In Opera window.hasOwnProperty exists but always returns false so we avoid
+ // using it. As a consequence the unique ID generated for BaseClass.prototype
+ // and SubClass.prototype will be the same.
+ return obj[goog.UID_PROPERTY_] ||
+ (obj[goog.UID_PROPERTY_] = ++goog.uidCounter_);
+};
+
+
+/**
+ * Whether the given object is already assigned a unique ID.
+ *
+ * This does not modify the object.
+ *
+ * @param {!Object} obj The object to check.
+ * @return {boolean} Whether there is an assigned unique id for the object.
+ */
+goog.hasUid = function(obj) {
+ return !!obj[goog.UID_PROPERTY_];
+};
+
+
+/**
+ * Removes the unique ID from an object. This is useful if the object was
+ * previously mutated using {@code goog.getUid} in which case the mutation is
+ * undone.
+ * @param {Object} obj The object to remove the unique ID field from.
+ */
+goog.removeUid = function(obj) {
+ // TODO(arv): Make the type stricter, do not accept null.
+
+ // In IE, DOM nodes are not instances of Object and throw an exception if we
+ // try to delete. Instead we try to use removeAttribute.
+ if (obj !== null && 'removeAttribute' in obj) {
+ obj.removeAttribute(goog.UID_PROPERTY_);
+ }
+ /** @preserveTry */
+ try {
+ delete obj[goog.UID_PROPERTY_];
+ } catch (ex) {
+ }
+};
+
+
+/**
+ * Name for unique ID property. Initialized in a way to help avoid collisions
+ * with other closure JavaScript on the same page.
+ * @type {string}
+ * @private
+ */
+goog.UID_PROPERTY_ = 'closure_uid_' + ((Math.random() * 1e9) >>> 0);
+
+
+/**
+ * Counter for UID.
+ * @type {number}
+ * @private
+ */
+goog.uidCounter_ = 0;
+
+
+/**
+ * Adds a hash code field to an object. The hash code is unique for the
+ * given object.
+ * @param {Object} obj The object to get the hash code for.
+ * @return {number} The hash code for the object.
+ * @deprecated Use goog.getUid instead.
+ */
+goog.getHashCode = goog.getUid;
+
+
+/**
+ * Removes the hash code field from an object.
+ * @param {Object} obj The object to remove the field from.
+ * @deprecated Use goog.removeUid instead.
+ */
+goog.removeHashCode = goog.removeUid;
+
+
+/**
+ * Clones a value. The input may be an Object, Array, or basic type. Objects and
+ * arrays will be cloned recursively.
+ *
+ * WARNINGS:
+ * <code>goog.cloneObject</code> does not detect reference loops. Objects that
+ * refer to themselves will cause infinite recursion.
+ *
+ * <code>goog.cloneObject</code> is unaware of unique identifiers, and copies
+ * UIDs created by <code>getUid</code> into cloned results.
+ *
+ * @param {*} obj The value to clone.
+ * @return {*} A clone of the input value.
+ * @deprecated goog.cloneObject is unsafe. Prefer the goog.object methods.
+ */
+goog.cloneObject = function(obj) {
+ var type = goog.typeOf(obj);
+ if (type == 'object' || type == 'array') {
+ if (obj.clone) {
+ return obj.clone();
+ }
+ var clone = type == 'array' ? [] : {};
+ for (var key in obj) {
+ clone[key] = goog.cloneObject(obj[key]);
+ }
+ return clone;
+ }
+
+ return obj;
+};
+
+
+/**
+ * A native implementation of goog.bind.
+ * @param {Function} fn A function to partially apply.
+ * @param {Object|undefined} selfObj Specifies the object which this should
+ * point to when the function is run.
+ * @param {...*} var_args Additional arguments that are partially applied to the
+ * function.
+ * @return {!Function} A partially-applied form of the function bind() was
+ * invoked as a method of.
+ * @private
+ * @suppress {deprecated} The compiler thinks that Function.prototype.bind is
+ * deprecated because some people have declared a pure-JS version.
+ * Only the pure-JS version is truly deprecated.
+ */
+goog.bindNative_ = function(fn, selfObj, var_args) {
+ return /** @type {!Function} */ (fn.call.apply(fn.bind, arguments));
+};
+
+
+/**
+ * A pure-JS implementation of goog.bind.
+ * @param {Function} fn A function to partially apply.
+ * @param {Object|undefined} selfObj Specifies the object which this should
+ * point to when the function is run.
+ * @param {...*} var_args Additional arguments that are partially applied to the
+ * function.
+ * @return {!Function} A partially-applied form of the function bind() was
+ * invoked as a method of.
+ * @private
+ */
+goog.bindJs_ = function(fn, selfObj, var_args) {
+ if (!fn) {
+ throw new Error();
+ }
+
+ if (arguments.length > 2) {
+ var boundArgs = Array.prototype.slice.call(arguments, 2);
+ return function() {
+ // Prepend the bound arguments to the current arguments.
+ var newArgs = Array.prototype.slice.call(arguments);
+ Array.prototype.unshift.apply(newArgs, boundArgs);
+ return fn.apply(selfObj, newArgs);
+ };
+
+ } else {
+ return function() { return fn.apply(selfObj, arguments); };
+ }
+};
+
+
+/**
+ * Partially applies this function to a particular 'this object' and zero or
+ * more arguments. The result is a new function with some arguments of the first
+ * function pre-filled and the value of this 'pre-specified'.
+ *
+ * Remaining arguments specified at call-time are appended to the pre-specified
+ * ones.
+ *
+ * Also see: {@link #partial}.
+ *
+ * Usage:
+ * <pre>var barMethBound = goog.bind(myFunction, myObj, 'arg1', 'arg2');
+ * barMethBound('arg3', 'arg4');</pre>
+ *
+ * @param {?function(this:T, ...)} fn A function to partially apply.
+ * @param {T} selfObj Specifies the object which this should point to when the
+ * function is run.
+ * @param {...*} var_args Additional arguments that are partially applied to the
+ * function.
+ * @return {!Function} A partially-applied form of the function goog.bind() was
+ * invoked as a method of.
+ * @template T
+ * @suppress {deprecated} See above.
+ */
+goog.bind = function(fn, selfObj, var_args) {
+ // TODO(nicksantos): narrow the type signature.
+ if (Function.prototype.bind &&
+ // NOTE(nicksantos): Somebody pulled base.js into the default Chrome
+ // extension environment. This means that for Chrome extensions, they get
+ // the implementation of Function.prototype.bind that calls goog.bind
+ // instead of the native one. Even worse, we don't want to introduce a
+ // circular dependency between goog.bind and Function.prototype.bind, so
+ // we have to hack this to make sure it works correctly.
+ Function.prototype.bind.toString().indexOf('native code') != -1) {
+ goog.bind = goog.bindNative_;
+ } else {
+ goog.bind = goog.bindJs_;
+ }
+ return goog.bind.apply(null, arguments);
+};
+
+
+/**
+ * Like goog.bind(), except that a 'this object' is not required. Useful when
+ * the target function is already bound.
+ *
+ * Usage:
+ * var g = goog.partial(f, arg1, arg2);
+ * g(arg3, arg4);
+ *
+ * @param {Function} fn A function to partially apply.
+ * @param {...*} var_args Additional arguments that are partially applied to fn.
+ * @return {!Function} A partially-applied form of the function goog.partial()
+ * was invoked as a method of.
+ */
+goog.partial = function(fn, var_args) {
+ var args = Array.prototype.slice.call(arguments, 1);
+ return function() {
+ // Clone the array (with slice()) and append additional arguments
+ // to the existing arguments.
+ var newArgs = args.slice();
+ newArgs.push.apply(newArgs, arguments);
+ return fn.apply(this, newArgs);
+ };
+};
+
+
+/**
+ * Copies all the members of a source object to a target object. This method
+ * does not work on all browsers for all objects that contain keys such as
+ * toString or hasOwnProperty. Use goog.object.extend for this purpose.
+ * @param {Object} target Target.
+ * @param {Object} source Source.
+ */
+goog.mixin = function(target, source) {
+ for (var x in source) {
+ target[x] = source[x];
+ }
+
+ // For IE7 or lower, the for-in-loop does not contain any properties that are
+ // not enumerable on the prototype object (for example, isPrototypeOf from
+ // Object.prototype) but also it will not include 'replace' on objects that
+ // extend String and change 'replace' (not that it is common for anyone to
+ // extend anything except Object).
+};
+
+
+/**
+ * @return {number} An integer value representing the number of milliseconds
+ * between midnight, January 1, 1970 and the current time.
+ */
+goog.now = (goog.TRUSTED_SITE && Date.now) || (function() {
+ // Unary plus operator converts its operand to a number which in
+ // the case of
+ // a date is done by calling getTime().
+ return +new Date();
+ });
+
+
+/**
+ * Evals JavaScript in the global scope. In IE this uses execScript, other
+ * browsers use goog.global.eval. If goog.global.eval does not evaluate in the
+ * global scope (for example, in Safari), appends a script tag instead.
+ * Throws an exception if neither execScript or eval is defined.
+ * @param {string} script JavaScript string.
+ */
+goog.globalEval = function(script) {
+ if (goog.global.execScript) {
+ goog.global.execScript(script, 'JavaScript');
+ } else if (goog.global.eval) {
+ // Test to see if eval works
+ if (goog.evalWorksForGlobals_ == null) {
+ goog.global.eval('var _evalTest_ = 1;');
+ if (typeof goog.global['_evalTest_'] != 'undefined') {
+ try {
+ delete goog.global['_evalTest_'];
+ } catch (ignore) {
+ // Microsoft edge fails the deletion above in strict mode.
+ }
+ goog.evalWorksForGlobals_ = true;
+ } else {
+ goog.evalWorksForGlobals_ = false;
+ }
+ }
+
+ if (goog.evalWorksForGlobals_) {
+ goog.global.eval(script);
+ } else {
+ /** @type {Document} */
+ var doc = goog.global.document;
+ var scriptElt =
+ /** @type {!HTMLScriptElement} */ (doc.createElement('SCRIPT'));
+ scriptElt.type = 'text/javascript';
+ scriptElt.defer = false;
+ // Note(user): can't use .innerHTML since "t('<test>')" will fail and
+ // .text doesn't work in Safari 2. Therefore we append a text node.
+ scriptElt.appendChild(doc.createTextNode(script));
+ doc.body.appendChild(scriptElt);
+ doc.body.removeChild(scriptElt);
+ }
+ } else {
+ throw Error('goog.globalEval not available');
+ }
+};
+
+
+/**
+ * Indicates whether or not we can call 'eval' directly to eval code in the
+ * global scope. Set to a Boolean by the first call to goog.globalEval (which
+ * empirically tests whether eval works for globals). @see goog.globalEval
+ * @type {?boolean}
+ * @private
+ */
+goog.evalWorksForGlobals_ = null;
+
+
+/**
+ * Optional map of CSS class names to obfuscated names used with
+ * goog.getCssName().
+ * @private {!Object<string, string>|undefined}
+ * @see goog.setCssNameMapping
+ */
+goog.cssNameMapping_;
+
+
+/**
+ * Optional obfuscation style for CSS class names. Should be set to either
+ * 'BY_WHOLE' or 'BY_PART' if defined.
+ * @type {string|undefined}
+ * @private
+ * @see goog.setCssNameMapping
+ */
+goog.cssNameMappingStyle_;
+
+
+/**
+ * Handles strings that are intended to be used as CSS class names.
+ *
+ * This function works in tandem with @see goog.setCssNameMapping.
+ *
+ * Without any mapping set, the arguments are simple joined with a hyphen and
+ * passed through unaltered.
+ *
+ * When there is a mapping, there are two possible styles in which these
+ * mappings are used. In the BY_PART style, each part (i.e. in between hyphens)
+ * of the passed in css name is rewritten according to the map. In the BY_WHOLE
+ * style, the full css name is looked up in the map directly. If a rewrite is
+ * not specified by the map, the compiler will output a warning.
+ *
+ * When the mapping is passed to the compiler, it will replace calls to
+ * goog.getCssName with the strings from the mapping, e.g.
+ * var x = goog.getCssName('foo');
+ * var y = goog.getCssName(this.baseClass, 'active');
+ * becomes:
+ * var x = 'foo';
+ * var y = this.baseClass + '-active';
+ *
+ * If one argument is passed it will be processed, if two are passed only the
+ * modifier will be processed, as it is assumed the first argument was generated
+ * as a result of calling goog.getCssName.
+ *
+ * @param {string} className The class name.
+ * @param {string=} opt_modifier A modifier to be appended to the class name.
+ * @return {string} The class name or the concatenation of the class name and
+ * the modifier.
+ */
+goog.getCssName = function(className, opt_modifier) {
+ var getMapping = function(cssName) {
+ return goog.cssNameMapping_[cssName] || cssName;
+ };
+
+ var renameByParts = function(cssName) {
+ // Remap all the parts individually.
+ var parts = cssName.split('-');
+ var mapped = [];
+ for (var i = 0; i < parts.length; i++) {
+ mapped.push(getMapping(parts[i]));
+ }
+ return mapped.join('-');
+ };
+
+ var rename;
+ if (goog.cssNameMapping_) {
+ rename =
+ goog.cssNameMappingStyle_ == 'BY_WHOLE' ? getMapping : renameByParts;
+ } else {
+ rename = function(a) { return a; };
+ }
+
+ if (opt_modifier) {
+ return className + '-' + rename(opt_modifier);
+ } else {
+ return rename(className);
+ }
+};
+
+
+/**
+ * Sets the map to check when returning a value from goog.getCssName(). Example:
+ * <pre>
+ * goog.setCssNameMapping({
+ * "goog": "a",
+ * "disabled": "b",
+ * });
+ *
+ * var x = goog.getCssName('goog');
+ * // The following evaluates to: "a a-b".
+ * goog.getCssName('goog') + ' ' + goog.getCssName(x, 'disabled')
+ * </pre>
+ * When declared as a map of string literals to string literals, the JSCompiler
+ * will replace all calls to goog.getCssName() using the supplied map if the
+ * --process_closure_primitives flag is set.
+ *
+ * @param {!Object} mapping A map of strings to strings where keys are possible
+ * arguments to goog.getCssName() and values are the corresponding values
+ * that should be returned.
+ * @param {string=} opt_style The style of css name mapping. There are two valid
+ * options: 'BY_PART', and 'BY_WHOLE'.
+ * @see goog.getCssName for a description.
+ */
+goog.setCssNameMapping = function(mapping, opt_style) {
+ goog.cssNameMapping_ = mapping;
+ goog.cssNameMappingStyle_ = opt_style;
+};
+
+
+/**
+ * To use CSS renaming in compiled mode, one of the input files should have a
+ * call to goog.setCssNameMapping() with an object literal that the JSCompiler
+ * can extract and use to replace all calls to goog.getCssName(). In uncompiled
+ * mode, JavaScript code should be loaded before this base.js file that declares
+ * a global variable, CLOSURE_CSS_NAME_MAPPING, which is used below. This is
+ * to ensure that the mapping is loaded before any calls to goog.getCssName()
+ * are made in uncompiled mode.
+ *
+ * A hook for overriding the CSS name mapping.
+ * @type {!Object<string, string>|undefined}
+ */
+goog.global.CLOSURE_CSS_NAME_MAPPING;
+
+
+if (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {
+ // This does not call goog.setCssNameMapping() because the JSCompiler
+ // requires that goog.setCssNameMapping() be called with an object literal.
+ goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;
+}
+
+
+/**
+ * Gets a localized message.
+ *
+ * This function is a compiler primitive. If you give the compiler a localized
+ * message bundle, it will replace the string at compile-time with a localized
+ * version, and expand goog.getMsg call to a concatenated string.
+ *
+ * Messages must be initialized in the form:
+ * <code>
+ * var MSG_NAME = goog.getMsg('Hello {$placeholder}', {'placeholder': 'world'});
+ * </code>
+ *
+ * This function produces a string which should be treated as plain text. Use
+ * {@link goog.html.SafeHtmlFormatter} in conjunction with goog.getMsg to
+ * produce SafeHtml.
+ *
+ * @param {string} str Translatable string, places holders in the form {$foo}.
+ * @param {Object<string, string>=} opt_values Maps place holder name to value.
+ * @return {string} message with placeholders filled.
+ */
+goog.getMsg = function(str, opt_values) {
+ if (opt_values) {
+ str = str.replace(/\{\$([^}]+)}/g, function(match, key) {
+ return (opt_values != null && key in opt_values) ? opt_values[key] :
+ match;
+ });
+ }
+ return str;
+};
+
+
+/**
+ * Gets a localized message. If the message does not have a translation, gives a
+ * fallback message.
+ *
+ * This is useful when introducing a new message that has not yet been
+ * translated into all languages.
+ *
+ * This function is a compiler primitive. Must be used in the form:
+ * <code>var x = goog.getMsgWithFallback(MSG_A, MSG_B);</code>
+ * where MSG_A and MSG_B were initialized with goog.getMsg.
+ *
+ * @param {string} a The preferred message.
+ * @param {string} b The fallback message.
+ * @return {string} The best translated message.
+ */
+goog.getMsgWithFallback = function(a, b) {
+ return a;
+};
+
+
+/**
+ * Exposes an unobfuscated global namespace path for the given object.
+ * Note that fields of the exported object *will* be obfuscated, unless they are
+ * exported in turn via this function or goog.exportProperty.
+ *
+ * Also handy for making public items that are defined in anonymous closures.
+ *
+ * ex. goog.exportSymbol('public.path.Foo', Foo);
+ *
+ * ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);
+ * public.path.Foo.staticFunction();
+ *
+ * ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',
+ * Foo.prototype.myMethod);
+ * new public.path.Foo().myMethod();
+ *
+ * @param {string} publicPath Unobfuscated name to export.
+ * @param {*} object Object the name should point to.
+ * @param {Object=} opt_objectToExportTo The object to add the path to; default
+ * is goog.global.
+ */
+goog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {
+ goog.exportPath_(publicPath, object, opt_objectToExportTo);
+};
+
+
+/**
+ * Exports a property unobfuscated into the object's namespace.
+ * ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);
+ * ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);
+ * @param {Object} object Object whose static property is being exported.
+ * @param {string} publicName Unobfuscated name to export.
+ * @param {*} symbol Object the name should point to.
+ */
+goog.exportProperty = function(object, publicName, symbol) {
+ object[publicName] = symbol;
+};
+
+
+/**
+ * Inherit the prototype methods from one constructor into another.
+ *
+ * Usage:
+ * <pre>
+ * function ParentClass(a, b) { }
+ * ParentClass.prototype.foo = function(a) { };
+ *
+ * function ChildClass(a, b, c) {
+ * ChildClass.base(this, 'constructor', a, b);
+ * }
+ * goog.inherits(ChildClass, ParentClass);
+ *
+ * var child = new ChildClass('a', 'b', 'see');
+ * child.foo(); // This works.
+ * </pre>
+ *
+ * @param {!Function} childCtor Child class.
+ * @param {!Function} parentCtor Parent class.
+ */
+goog.inherits = function(childCtor, parentCtor) {
+ /** @constructor */
+ function tempCtor() {}
+ tempCtor.prototype = parentCtor.prototype;
+ childCtor.superClass_ = parentCtor.prototype;
+ childCtor.prototype = new tempCtor();
+ /** @override */
+ childCtor.prototype.constructor = childCtor;
+
+ /**
+ * Calls superclass constructor/method.
+ *
+ * This function is only available if you use goog.inherits to
+ * express inheritance relationships between classes.
+ *
+ * NOTE: This is a replacement for goog.base and for superClass_
+ * property defined in childCtor.
+ *
+ * @param {!Object} me Should always be "this".
+ * @param {string} methodName The method name to call. Calling
+ * superclass constructor can be done with the special string
+ * 'constructor'.
+ * @param {...*} var_args The arguments to pass to superclass
+ * method/constructor.
+ * @return {*} The return value of the superclass method/constructor.
+ */
+ childCtor.base = function(me, methodName, var_args) {
+ // Copying using loop to avoid deop due to passing arguments object to
+ // function. This is faster in many JS engines as of late 2014.
+ var args = new Array(arguments.length - 2);
+ for (var i = 2; i < arguments.length; i++) {
+ args[i - 2] = arguments[i];
+ }
+ return parentCtor.prototype[methodName].apply(me, args);
+ };
+};
+
+
+/**
+ * Call up to the superclass.
+ *
+ * If this is called from a constructor, then this calls the superclass
+ * constructor with arguments 1-N.
+ *
+ * If this is called from a prototype method, then you must pass the name of the
+ * method as the second argument to this function. If you do not, you will get a
+ * runtime error. This calls the superclass' method with arguments 2-N.
+ *
+ * This function only works if you use goog.inherits to express inheritance
+ * relationships between your classes.
+ *
+ * This function is a compiler primitive. At compile-time, the compiler will do
+ * macro expansion to remove a lot of the extra overhead that this function
+ * introduces. The compiler will also enforce a lot of the assumptions that this
+ * function makes, and treat it as a compiler error if you break them.
+ *
+ * @param {!Object} me Should always be "this".
+ * @param {*=} opt_methodName The method name if calling a super method.
+ * @param {...*} var_args The rest of the arguments.
+ * @return {*} The return value of the superclass method.
+ * @suppress {es5Strict} This method can not be used in strict mode, but
+ * all Closure Library consumers must depend on this file.
+ */
+goog.base = function(me, opt_methodName, var_args) {
+ var caller = arguments.callee.caller;
+
+ if (goog.STRICT_MODE_COMPATIBLE || (goog.DEBUG && !caller)) {
+ throw Error(
+ 'arguments.caller not defined. goog.base() cannot be used ' +
+ 'with strict mode code. See ' +
+ 'http://www.ecma-international.org/ecma-262/5.1/#sec-C');
+ }
+
+ if (caller.superClass_) {
+ // Copying using loop to avoid deop due to passing arguments object to
+ // function. This is faster in many JS engines as of late 2014.
+ var ctorArgs = new Array(arguments.length - 1);
+ for (var i = 1; i < arguments.length; i++) {
+ ctorArgs[i - 1] = arguments[i];
+ }
+ // This is a constructor. Call the superclass constructor.
+ return caller.superClass_.constructor.apply(me, ctorArgs);
+ }
+
+ // Copying using loop to avoid deop due to passing arguments object to
+ // function. This is faster in many JS engines as of late 2014.
+ var args = new Array(arguments.length - 2);
+ for (var i = 2; i < arguments.length; i++) {
+ args[i - 2] = arguments[i];
+ }
+ var foundCaller = false;
+ for (var ctor = me.constructor; ctor;
+ ctor = ctor.superClass_ && ctor.superClass_.constructor) {
+ if (ctor.prototype[opt_methodName] === caller) {
+ foundCaller = true;
+ } else if (foundCaller) {
+ return ctor.prototype[opt_methodName].apply(me, args);
+ }
+ }
+
+ // If we did not find the caller in the prototype chain, then one of two
+ // things happened:
+ // 1) The caller is an instance method.
+ // 2) This method was not called by the right caller.
+ if (me[opt_methodName] === caller) {
+ return me.constructor.prototype[opt_methodName].apply(me, args);
+ } else {
+ throw Error(
+ 'goog.base called from a method of one name ' +
+ 'to a method of a different name');
+ }
+};
+
+
+/**
+ * Allow for aliasing within scope functions. This function exists for
+ * uncompiled code - in compiled code the calls will be inlined and the aliases
+ * applied. In uncompiled code the function is simply run since the aliases as
+ * written are valid JavaScript.
+ *
+ *
+ * @param {function()} fn Function to call. This function can contain aliases
+ * to namespaces (e.g. "var dom = goog.dom") or classes
+ * (e.g. "var Timer = goog.Timer").
+ */
+goog.scope = function(fn) {
+ if (goog.isInModuleLoader_()) {
+ throw Error('goog.scope is not supported within a goog.module.');
+ }
+ fn.call(goog.global);
+};
+
+
+/*
+ * To support uncompiled, strict mode bundles that use eval to divide source
+ * like so:
+ * eval('someSource;//# sourceUrl sourcefile.js');
+ * We need to export the globally defined symbols "goog" and "COMPILED".
+ * Exporting "goog" breaks the compiler optimizations, so we required that
+ * be defined externally.
+ * NOTE: We don't use goog.exportSymbol here because we don't want to trigger
+ * extern generation when that compiler option is enabled.
+ */
+if (!COMPILED) {
+ goog.global['COMPILED'] = COMPILED;
+}
+
+
+//==============================================================================
+// goog.defineClass implementation
+//==============================================================================
+
+
+/**
+ * Creates a restricted form of a Closure "class":
+ * - from the compiler's perspective, the instance returned from the
+ * constructor is sealed (no new properties may be added). This enables
+ * better checks.
+ * - the compiler will rewrite this definition to a form that is optimal
+ * for type checking and optimization (initially this will be a more
+ * traditional form).
+ *
+ * @param {Function} superClass The superclass, Object or null.
+ * @param {goog.defineClass.ClassDescriptor} def
+ * An object literal describing
+ * the class. It may have the following properties:
+ * "constructor": the constructor function
+ * "statics": an object literal containing methods to add to the constructor
+ * as "static" methods or a function that will receive the constructor
+ * function as its only parameter to which static properties can
+ * be added.
+ * all other properties are added to the prototype.
+ * @return {!Function} The class constructor.
+ */
+goog.defineClass = function(superClass, def) {
+ // TODO(johnlenz): consider making the superClass an optional parameter.
+ var constructor = def.constructor;
+ var statics = def.statics;
+ // Wrap the constructor prior to setting up the prototype and static methods.
+ if (!constructor || constructor == Object.prototype.constructor) {
+ constructor = function() {
+ throw Error('cannot instantiate an interface (no constructor defined).');
+ };
+ }
+
+ var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);
+ if (superClass) {
+ goog.inherits(cls, superClass);
+ }
+
+ // Remove all the properties that should not be copied to the prototype.
+ delete def.constructor;
+ delete def.statics;
+
+ goog.defineClass.applyProperties_(cls.prototype, def);
+ if (statics != null) {
+ if (statics instanceof Function) {
+ statics(cls);
+ } else {
+ goog.defineClass.applyProperties_(cls, statics);
+ }
+ }
+
+ return cls;
+};
+
+
+/**
+ * @typedef {{
+ * constructor: (!Function|undefined),
+ * statics: (Object|undefined|function(Function):void)
+ * }}
+ * @suppress {missingProvide}
+ */
+goog.defineClass.ClassDescriptor;
+
+
+/**
+ * @define {boolean} Whether the instances returned by goog.defineClass should
+ * be sealed when possible.
+ *
+ * When sealing is disabled the constructor function will not be wrapped by
+ * goog.defineClass, making it incompatible with ES6 class methods.
+ */
+goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);
+
+
+/**
+ * If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is
+ * defined, this function will wrap the constructor in a function that seals the
+ * results of the provided constructor function.
+ *
+ * @param {!Function} ctr The constructor whose results maybe be sealed.
+ * @param {Function} superClass The superclass constructor.
+ * @return {!Function} The replacement constructor.
+ * @private
+ */
+goog.defineClass.createSealingConstructor_ = function(ctr, superClass) {
+ if (!goog.defineClass.SEAL_CLASS_INSTANCES) {
+ // Do now wrap the constructor when sealing is disabled. Angular code
+ // depends on this for injection to work properly.
+ return ctr;
+ }
+
+ // Compute whether the constructor is sealable at definition time, rather
+ // than when the instance is being constructed.
+ var superclassSealable = !goog.defineClass.isUnsealable_(superClass);
+
+ /**
+ * @this {Object}
+ * @return {?}
+ */
+ var wrappedCtr = function() {
+ // Don't seal an instance of a subclass when it calls the constructor of
+ // its super class as there is most likely still setup to do.
+ var instance = ctr.apply(this, arguments) || this;
+ instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];
+
+ if (this.constructor === wrappedCtr && superclassSealable &&
+ Object.seal instanceof Function) {
+ Object.seal(instance);
+ }
+ return instance;
+ };
+
+ return wrappedCtr;
+};
+
+
+/**
+ * @param {Function} ctr The constructor to test.
+ * @returns {boolean} Whether the constructor has been tagged as unsealable
+ * using goog.tagUnsealableClass.
+ * @private
+ */
+goog.defineClass.isUnsealable_ = function(ctr) {
+ return ctr && ctr.prototype &&
+ ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_];
+};
+
+
+// TODO(johnlenz): share these values with the goog.object
+/**
+ * The names of the fields that are defined on Object.prototype.
+ * @type {!Array<string>}
+ * @private
+ * @const
+ */
+goog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [
+ 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
+ 'toLocaleString', 'toString', 'valueOf'
+];
+
+
+// TODO(johnlenz): share this function with the goog.object
+/**
+ * @param {!Object} target The object to add properties to.
+ * @param {!Object} source The object to copy properties from.
+ * @private
+ */
+goog.defineClass.applyProperties_ = function(target, source) {
+ // TODO(johnlenz): update this to support ES5 getters/setters
+
+ var key;
+ for (key in source) {
+ if (Object.prototype.hasOwnProperty.call(source, key)) {
+ target[key] = source[key];
+ }
+ }
+
+ // For IE the for-in-loop does not contain any properties that are not
+ // enumerable on the prototype object (for example isPrototypeOf from
+ // Object.prototype) and it will also not include 'replace' on objects that
+ // extend String and change 'replace' (not that it is common for anyone to
+ // extend anything except Object).
+ for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {
+ key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];
+ if (Object.prototype.hasOwnProperty.call(source, key)) {
+ target[key] = source[key];
+ }
+ }
+};
+
+
+/**
+ * Sealing classes breaks the older idiom of assigning properties on the
+ * prototype rather than in the constructor. As such, goog.defineClass
+ * must not seal subclasses of these old-style classes until they are fixed.
+ * Until then, this marks a class as "broken", instructing defineClass
+ * not to seal subclasses.
+ * @param {!Function} ctr The legacy constructor to tag as unsealable.
+ */
+goog.tagUnsealableClass = function(ctr) {
+ if (!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES) {
+ ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = true;
+ }
+};
+
+
+/**
+ * Name for unsealable tag property.
+ * @const @private {string}
+ */
+goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = 'goog_defineClass_legacy_unsealable';
+
+goog.provide('ol');
+
+
+/**
+ * Constants defined with the define tag cannot be changed in application
+ * code, but can be set at compile time.
+ * Some reduce the size of the build in advanced compile mode.
+ */
+
+
+/**
+ * @define {boolean} Assume touch. Default is `false`.
+ */
+ol.ASSUME_TOUCH = false;
+
+
+/**
+ * TODO: rename this to something having to do with tile grids
+ * see https://github.com/openlayers/ol3/issues/2076
+ * @define {number} Default maximum zoom for default tile grids.
+ */
+ol.DEFAULT_MAX_ZOOM = 42;
+
+
+/**
+ * @define {number} Default min zoom level for the map view. Default is `0`.
+ */
+ol.DEFAULT_MIN_ZOOM = 0;
+
+
+/**
+ * @define {number} Default maximum allowed threshold (in pixels) for
+ * reprojection triangulation. Default is `0.5`.
+ */
+ol.DEFAULT_RASTER_REPROJECTION_ERROR_THRESHOLD = 0.5;
+
+
+/**
+ * @define {number} Default tile size.
+ */
+ol.DEFAULT_TILE_SIZE = 256;
+
+
+/**
+ * @define {string} Default WMS version.
+ */
+ol.DEFAULT_WMS_VERSION = '1.3.0';
+
+
+/**
+ * @define {number} Hysteresis pixels.
+ */
+ol.DRAG_BOX_HYSTERESIS_PIXELS = 8;
+
+
+/**
+ * @define {boolean} Enable the Canvas renderer. Default is `true`. Setting
+ * this to false at compile time in advanced mode removes all code
+ * supporting the Canvas renderer from the build.
+ */
+ol.ENABLE_CANVAS = true;
+
+
+/**
+ * @define {boolean} Enable the DOM renderer (used as a fallback where Canvas is
+ * not available). Default is `true`. Setting this to false at compile time
+ * in advanced mode removes all code supporting the DOM renderer from the
+ * build.
+ */
+ol.ENABLE_DOM = true;
+
+
+/**
+ * @define {boolean} Enable rendering of ol.layer.Image based layers. Default
+ * is `true`. Setting this to false at compile time in advanced mode removes
+ * all code supporting Image layers from the build.
+ */
+ol.ENABLE_IMAGE = true;
+
+
+/**
+ * @define {boolean} Enable Closure named colors (`goog.color.names`).
+ * Enabling these colors adds about 3KB uncompressed / 1.5KB compressed to
+ * the final build size. Default is `false`. This setting has no effect
+ * with Canvas renderer, which uses its own names, whether this is true or
+ * false.
+ */
+ol.ENABLE_NAMED_COLORS = false;
+
+
+/**
+ * @define {boolean} Enable integration with the Proj4js library. Default is
+ * `true`.
+ */
+ol.ENABLE_PROJ4JS = true;
+
+
+/**
+ * @define {boolean} Enable automatic reprojection of raster sources. Default is
+ * `true`.
+ */
+ol.ENABLE_RASTER_REPROJECTION = true;
+
+
+/**
+ * @define {boolean} Enable rendering of ol.layer.Tile based layers. Default is
+ * `true`. Setting this to false at compile time in advanced mode removes
+ * all code supporting Tile layers from the build.
+ */
+ol.ENABLE_TILE = true;
+
+
+/**
+ * @define {boolean} Enable rendering of ol.layer.Vector based layers. Default
+ * is `true`. Setting this to false at compile time in advanced mode removes
+ * all code supporting Vector layers from the build.
+ */
+ol.ENABLE_VECTOR = true;
+
+
+/**
+ * @define {boolean} Enable rendering of ol.layer.VectorTile based layers.
+ * Default is `true`. Setting this to false at compile time in advanced mode
+ * removes all code supporting VectorTile layers from the build.
+ */
+ol.ENABLE_VECTOR_TILE = true;
+
+
+/**
+ * @define {boolean} Enable the WebGL renderer. Default is `true`. Setting
+ * this to false at compile time in advanced mode removes all code
+ * supporting the WebGL renderer from the build.
+ */
+ol.ENABLE_WEBGL = true;
+
+
+/**
+ * @define {number} The size in pixels of the first atlas image. Default is
+ * `256`.
+ */
+ol.INITIAL_ATLAS_SIZE = 256;
+
+
+/**
+ * @define {number} The maximum size in pixels of atlas images. Default is
+ * `-1`, meaning it is not used (and `ol.WEBGL_MAX_TEXTURE_SIZE` is
+ * used instead).
+ */
+ol.MAX_ATLAS_SIZE = -1;
+
+
+/**
+ * @define {number} Maximum mouse wheel delta.
+ */
+ol.MOUSEWHEELZOOM_MAXDELTA = 1;
+
+
+/**
+ * @define {number} Mouse wheel timeout duration.
+ */
+ol.MOUSEWHEELZOOM_TIMEOUT_DURATION = 80;
+
+
+/**
+ * @define {number} Maximum width and/or height extent ratio that determines
+ * when the overview map should be zoomed out.
+ */
+ol.OVERVIEWMAP_MAX_RATIO = 0.75;
+
+
+/**
+ * @define {number} Minimum width and/or height extent ratio that determines
+ * when the overview map should be zoomed in.
+ */
+ol.OVERVIEWMAP_MIN_RATIO = 0.1;
+
+
+/**
+ * @define {number} Maximum number of source tiles for raster reprojection of
+ * a single tile.
+ * If too many source tiles are determined to be loaded to create a single
+ * reprojected tile the browser can become unresponsive or even crash.
+ * This can happen if the developer defines projections improperly and/or
+ * with unlimited extents.
+ * If too many tiles are required, no tiles are loaded and
+ * `ol.TileState.ERROR` state is set. Default is `100`.
+ */
+ol.RASTER_REPROJECTION_MAX_SOURCE_TILES = 100;
+
+
+/**
+ * @define {number} Maximum number of subdivision steps during raster
+ * reprojection triangulation. Prevents high memory usage and large
+ * number of proj4 calls (for certain transformations and areas).
+ * At most `2*(2^this)` triangles are created for each triangulated
+ * extent (tile/image). Default is `10`.
+ */
+ol.RASTER_REPROJECTION_MAX_SUBDIVISION = 10;
+
+
+/**
+ * @define {number} Maximum allowed size of triangle relative to world width.
+ * When transforming corners of world extent between certain projections,
+ * the resulting triangulation seems to have zero error and no subdivision
+ * is performed.
+ * If the triangle width is more than this (relative to world width; 0-1),
+ * subdivison is forced (up to `ol.RASTER_REPROJECTION_MAX_SUBDIVISION`).
+ * Default is `0.25`.
+ */
+ol.RASTER_REPROJECTION_MAX_TRIANGLE_WIDTH = 0.25;
+
+
+/**
+ * @define {number} Tolerance for geometry simplification in device pixels.
+ */
+ol.SIMPLIFY_TOLERANCE = 0.5;
+
+
+/**
+ * @define {number} Texture cache high water mark.
+ */
+ol.WEBGL_TEXTURE_CACHE_HIGH_WATER_MARK = 1024;
+
+
+/**
+ * The maximum supported WebGL texture size in pixels. If WebGL is not
+ * supported, the value is set to `undefined`.
+ * @const
+ * @type {number|undefined}
+ */
+ol.WEBGL_MAX_TEXTURE_SIZE; // value is set in `ol.has`
+
+
+/**
+ * List of supported WebGL extensions.
+ * @const
+ * @type {Array.<string>}
+ */
+ol.WEBGL_EXTENSIONS; // value is set in `ol.has`
+
+
+/**
+ * Inherit the prototype methods from one constructor into another.
+ *
+ * Usage:
+ *
+ * function ParentClass(a, b) { }
+ * ParentClass.prototype.foo = function(a) { }
+ *
+ * function ChildClass(a, b, c) {
+ * // Call parent constructor
+ * ParentClass.call(this, a, b);
+ * }
+ * ol.inherits(ChildClass, ParentClass);
+ *
+ * var child = new ChildClass('a', 'b', 'see');
+ * child.foo(); // This works.
+ *
+ * @param {!Function} childCtor Child constructor.
+ * @param {!Function} parentCtor Parent constructor.
+ * @function
+ * @api
+ */
+ol.inherits = function(childCtor, parentCtor) {
+ childCtor.prototype = Object.create(parentCtor.prototype);
+ childCtor.prototype.constructor = childCtor;
+};
+
+
+/**
+ * A reusable function, used e.g. as a default for callbacks.
+ *
+ * @return {undefined} Nothing.
+ */
+ol.nullFunction = function() {};
+
+
+ol.global = Function('return this')();
+
+// Copyright 2009 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Provides a base class for custom Error objects such that the
+ * stack is correctly maintained.
+ *
+ * You should never need to throw goog.debug.Error(msg) directly, Error(msg) is
+ * sufficient.
+ *
+ */
+
+goog.provide('goog.debug.Error');
+
+
+
+/**
+ * Base class for custom error objects.
+ * @param {*=} opt_msg The message associated with the error.
+ * @constructor
+ * @extends {Error}
+ */
+goog.debug.Error = function(opt_msg) {
+
+ // Attempt to ensure there is a stack trace.
+ if (Error.captureStackTrace) {
+ Error.captureStackTrace(this, goog.debug.Error);
+ } else {
+ var stack = new Error().stack;
+ if (stack) {
+ this.stack = stack;
+ }
+ }
+
+ if (opt_msg) {
+ this.message = String(opt_msg);
+ }
+
+ /**
+ * Whether to report this error to the server. Setting this to false will
+ * cause the error reporter to not report the error back to the server,
+ * which can be useful if the client knows that the error has already been
+ * logged on the server.
+ * @type {boolean}
+ */
+ this.reportErrorToServer = true;
+};
+goog.inherits(goog.debug.Error, Error);
+
+
+/** @override */
+goog.debug.Error.prototype.name = 'CustomError';
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Definition of goog.dom.NodeType.
+ */
+
+goog.provide('goog.dom.NodeType');
+
+
+/**
+ * Constants for the nodeType attribute in the Node interface.
+ *
+ * These constants match those specified in the Node interface. These are
+ * usually present on the Node object in recent browsers, but not in older
+ * browsers (specifically, early IEs) and thus are given here.
+ *
+ * In some browsers (early IEs), these are not defined on the Node object,
+ * so they are provided here.
+ *
+ * See http://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-1950641247
+ * @enum {number}
+ */
+goog.dom.NodeType = {
+ ELEMENT: 1,
+ ATTRIBUTE: 2,
+ TEXT: 3,
+ CDATA_SECTION: 4,
+ ENTITY_REFERENCE: 5,
+ ENTITY: 6,
+ PROCESSING_INSTRUCTION: 7,
+ COMMENT: 8,
+ DOCUMENT: 9,
+ DOCUMENT_TYPE: 10,
+ DOCUMENT_FRAGMENT: 11,
+ NOTATION: 12
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities for string manipulation.
+ * @author arv@google.com (Erik Arvidsson)
+ */
+
+
+/**
+ * Namespace for string utilities
+ */
+goog.provide('goog.string');
+goog.provide('goog.string.Unicode');
+
+
+/**
+ * @define {boolean} Enables HTML escaping of lowercase letter "e" which helps
+ * with detection of double-escaping as this letter is frequently used.
+ */
+goog.define('goog.string.DETECT_DOUBLE_ESCAPING', false);
+
+
+/**
+ * @define {boolean} Whether to force non-dom html unescaping.
+ */
+goog.define('goog.string.FORCE_NON_DOM_HTML_UNESCAPING', false);
+
+
+/**
+ * Common Unicode string characters.
+ * @enum {string}
+ */
+goog.string.Unicode = {
+ NBSP: '\xa0'
+};
+
+
+/**
+ * Fast prefix-checker.
+ * @param {string} str The string to check.
+ * @param {string} prefix A string to look for at the start of {@code str}.
+ * @return {boolean} True if {@code str} begins with {@code prefix}.
+ */
+goog.string.startsWith = function(str, prefix) {
+ return str.lastIndexOf(prefix, 0) == 0;
+};
+
+
+/**
+ * Fast suffix-checker.
+ * @param {string} str The string to check.
+ * @param {string} suffix A string to look for at the end of {@code str}.
+ * @return {boolean} True if {@code str} ends with {@code suffix}.
+ */
+goog.string.endsWith = function(str, suffix) {
+ var l = str.length - suffix.length;
+ return l >= 0 && str.indexOf(suffix, l) == l;
+};
+
+
+/**
+ * Case-insensitive prefix-checker.
+ * @param {string} str The string to check.
+ * @param {string} prefix A string to look for at the end of {@code str}.
+ * @return {boolean} True if {@code str} begins with {@code prefix} (ignoring
+ * case).
+ */
+goog.string.caseInsensitiveStartsWith = function(str, prefix) {
+ return goog.string.caseInsensitiveCompare(
+ prefix, str.substr(0, prefix.length)) == 0;
+};
+
+
+/**
+ * Case-insensitive suffix-checker.
+ * @param {string} str The string to check.
+ * @param {string} suffix A string to look for at the end of {@code str}.
+ * @return {boolean} True if {@code str} ends with {@code suffix} (ignoring
+ * case).
+ */
+goog.string.caseInsensitiveEndsWith = function(str, suffix) {
+ return goog.string.caseInsensitiveCompare(
+ suffix, str.substr(str.length - suffix.length, suffix.length)) ==
+ 0;
+};
+
+
+/**
+ * Case-insensitive equality checker.
+ * @param {string} str1 First string to check.
+ * @param {string} str2 Second string to check.
+ * @return {boolean} True if {@code str1} and {@code str2} are the same string,
+ * ignoring case.
+ */
+goog.string.caseInsensitiveEquals = function(str1, str2) {
+ return str1.toLowerCase() == str2.toLowerCase();
+};
+
+
+/**
+ * Does simple python-style string substitution.
+ * subs("foo%s hot%s", "bar", "dog") becomes "foobar hotdog".
+ * @param {string} str The string containing the pattern.
+ * @param {...*} var_args The items to substitute into the pattern.
+ * @return {string} A copy of {@code str} in which each occurrence of
+ * {@code %s} has been replaced an argument from {@code var_args}.
+ */
+goog.string.subs = function(str, var_args) {
+ var splitParts = str.split('%s');
+ var returnString = '';
+
+ var subsArguments = Array.prototype.slice.call(arguments, 1);
+ while (subsArguments.length &&
+ // Replace up to the last split part. We are inserting in the
+ // positions between split parts.
+ splitParts.length > 1) {
+ returnString += splitParts.shift() + subsArguments.shift();
+ }
+
+ return returnString + splitParts.join('%s'); // Join unused '%s'
+};
+
+
+/**
+ * Converts multiple whitespace chars (spaces, non-breaking-spaces, new lines
+ * and tabs) to a single space, and strips leading and trailing whitespace.
+ * @param {string} str Input string.
+ * @return {string} A copy of {@code str} with collapsed whitespace.
+ */
+goog.string.collapseWhitespace = function(str) {
+ // Since IE doesn't include non-breaking-space (0xa0) in their \s character
+ // class (as required by section 7.2 of the ECMAScript spec), we explicitly
+ // include it in the regexp to enforce consistent cross-browser behavior.
+ return str.replace(/[\s\xa0]+/g, ' ').replace(/^\s+|\s+$/g, '');
+};
+
+
+/**
+ * Checks if a string is empty or contains only whitespaces.
+ * @param {string} str The string to check.
+ * @return {boolean} Whether {@code str} is empty or whitespace only.
+ */
+goog.string.isEmptyOrWhitespace = function(str) {
+ // testing length == 0 first is actually slower in all browsers (about the
+ // same in Opera).
+ // Since IE doesn't include non-breaking-space (0xa0) in their \s character
+ // class (as required by section 7.2 of the ECMAScript spec), we explicitly
+ // include it in the regexp to enforce consistent cross-browser behavior.
+ return /^[\s\xa0]*$/.test(str);
+};
+
+
+/**
+ * Checks if a string is empty.
+ * @param {string} str The string to check.
+ * @return {boolean} Whether {@code str} is empty.
+ */
+goog.string.isEmptyString = function(str) {
+ return str.length == 0;
+};
+
+
+/**
+ * Checks if a string is empty or contains only whitespaces.
+ *
+ * TODO(user): Deprecate this when clients have been switched over to
+ * goog.string.isEmptyOrWhitespace.
+ *
+ * @param {string} str The string to check.
+ * @return {boolean} Whether {@code str} is empty or whitespace only.
+ */
+goog.string.isEmpty = goog.string.isEmptyOrWhitespace;
+
+
+/**
+ * Checks if a string is null, undefined, empty or contains only whitespaces.
+ * @param {*} str The string to check.
+ * @return {boolean} Whether {@code str} is null, undefined, empty, or
+ * whitespace only.
+ * @deprecated Use goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str))
+ * instead.
+ */
+goog.string.isEmptyOrWhitespaceSafe = function(str) {
+ return goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str));
+};
+
+
+/**
+ * Checks if a string is null, undefined, empty or contains only whitespaces.
+ *
+ * TODO(user): Deprecate this when clients have been switched over to
+ * goog.string.isEmptyOrWhitespaceSafe.
+ *
+ * @param {*} str The string to check.
+ * @return {boolean} Whether {@code str} is null, undefined, empty, or
+ * whitespace only.
+ */
+goog.string.isEmptySafe = goog.string.isEmptyOrWhitespaceSafe;
+
+
+/**
+ * Checks if a string is all breaking whitespace.
+ * @param {string} str The string to check.
+ * @return {boolean} Whether the string is all breaking whitespace.
+ */
+goog.string.isBreakingWhitespace = function(str) {
+ return !/[^\t\n\r ]/.test(str);
+};
+
+
+/**
+ * Checks if a string contains all letters.
+ * @param {string} str string to check.
+ * @return {boolean} True if {@code str} consists entirely of letters.
+ */
+goog.string.isAlpha = function(str) {
+ return !/[^a-zA-Z]/.test(str);
+};
+
+
+/**
+ * Checks if a string contains only numbers.
+ * @param {*} str string to check. If not a string, it will be
+ * casted to one.
+ * @return {boolean} True if {@code str} is numeric.
+ */
+goog.string.isNumeric = function(str) {
+ return !/[^0-9]/.test(str);
+};
+
+
+/**
+ * Checks if a string contains only numbers or letters.
+ * @param {string} str string to check.
+ * @return {boolean} True if {@code str} is alphanumeric.
+ */
+goog.string.isAlphaNumeric = function(str) {
+ return !/[^a-zA-Z0-9]/.test(str);
+};
+
+
+/**
+ * Checks if a character is a space character.
+ * @param {string} ch Character to check.
+ * @return {boolean} True if {@code ch} is a space.
+ */
+goog.string.isSpace = function(ch) {
+ return ch == ' ';
+};
+
+
+/**
+ * Checks if a character is a valid unicode character.
+ * @param {string} ch Character to check.
+ * @return {boolean} True if {@code ch} is a valid unicode character.
+ */
+goog.string.isUnicodeChar = function(ch) {
+ return ch.length == 1 && ch >= ' ' && ch <= '~' ||
+ ch >= '\u0080' && ch <= '\uFFFD';
+};
+
+
+/**
+ * Takes a string and replaces newlines with a space. Multiple lines are
+ * replaced with a single space.
+ * @param {string} str The string from which to strip newlines.
+ * @return {string} A copy of {@code str} stripped of newlines.
+ */
+goog.string.stripNewlines = function(str) {
+ return str.replace(/(\r\n|\r|\n)+/g, ' ');
+};
+
+
+/**
+ * Replaces Windows and Mac new lines with unix style: \r or \r\n with \n.
+ * @param {string} str The string to in which to canonicalize newlines.
+ * @return {string} {@code str} A copy of {@code} with canonicalized newlines.
+ */
+goog.string.canonicalizeNewlines = function(str) {
+ return str.replace(/(\r\n|\r|\n)/g, '\n');
+};
+
+
+/**
+ * Normalizes whitespace in a string, replacing all whitespace chars with
+ * a space.
+ * @param {string} str The string in which to normalize whitespace.
+ * @return {string} A copy of {@code str} with all whitespace normalized.
+ */
+goog.string.normalizeWhitespace = function(str) {
+ return str.replace(/\xa0|\s/g, ' ');
+};
+
+
+/**
+ * Normalizes spaces in a string, replacing all consecutive spaces and tabs
+ * with a single space. Replaces non-breaking space with a space.
+ * @param {string} str The string in which to normalize spaces.
+ * @return {string} A copy of {@code str} with all consecutive spaces and tabs
+ * replaced with a single space.
+ */
+goog.string.normalizeSpaces = function(str) {
+ return str.replace(/\xa0|[ \t]+/g, ' ');
+};
+
+
+/**
+ * Removes the breaking spaces from the left and right of the string and
+ * collapses the sequences of breaking spaces in the middle into single spaces.
+ * The original and the result strings render the same way in HTML.
+ * @param {string} str A string in which to collapse spaces.
+ * @return {string} Copy of the string with normalized breaking spaces.
+ */
+goog.string.collapseBreakingSpaces = function(str) {
+ return str.replace(/[\t\r\n ]+/g, ' ')
+ .replace(/^[\t\r\n ]+|[\t\r\n ]+$/g, '');
+};
+
+
+/**
+ * Trims white spaces to the left and right of a string.
+ * @param {string} str The string to trim.
+ * @return {string} A trimmed copy of {@code str}.
+ */
+goog.string.trim =
+ (goog.TRUSTED_SITE && String.prototype.trim) ? function(str) {
+ return str.trim();
+ } : function(str) {
+ // Since IE doesn't include non-breaking-space (0xa0) in their \s
+ // character class (as required by section 7.2 of the ECMAScript spec),
+ // we explicitly include it in the regexp to enforce consistent
+ // cross-browser behavior.
+ return str.replace(/^[\s\xa0]+|[\s\xa0]+$/g, '');
+ };
+
+
+/**
+ * Trims whitespaces at the left end of a string.
+ * @param {string} str The string to left trim.
+ * @return {string} A trimmed copy of {@code str}.
+ */
+goog.string.trimLeft = function(str) {
+ // Since IE doesn't include non-breaking-space (0xa0) in their \s character
+ // class (as required by section 7.2 of the ECMAScript spec), we explicitly
+ // include it in the regexp to enforce consistent cross-browser behavior.
+ return str.replace(/^[\s\xa0]+/, '');
+};
+
+
+/**
+ * Trims whitespaces at the right end of a string.
+ * @param {string} str The string to right trim.
+ * @return {string} A trimmed copy of {@code str}.
+ */
+goog.string.trimRight = function(str) {
+ // Since IE doesn't include non-breaking-space (0xa0) in their \s character
+ // class (as required by section 7.2 of the ECMAScript spec), we explicitly
+ // include it in the regexp to enforce consistent cross-browser behavior.
+ return str.replace(/[\s\xa0]+$/, '');
+};
+
+
+/**
+ * A string comparator that ignores case.
+ * -1 = str1 less than str2
+ * 0 = str1 equals str2
+ * 1 = str1 greater than str2
+ *
+ * @param {string} str1 The string to compare.
+ * @param {string} str2 The string to compare {@code str1} to.
+ * @return {number} The comparator result, as described above.
+ */
+goog.string.caseInsensitiveCompare = function(str1, str2) {
+ var test1 = String(str1).toLowerCase();
+ var test2 = String(str2).toLowerCase();
+
+ if (test1 < test2) {
+ return -1;
+ } else if (test1 == test2) {
+ return 0;
+ } else {
+ return 1;
+ }
+};
+
+
+/**
+ * Compares two strings interpreting their numeric substrings as numbers.
+ *
+ * @param {string} str1 First string.
+ * @param {string} str2 Second string.
+ * @param {!RegExp} tokenizerRegExp Splits a string into substrings of
+ * non-negative integers, non-numeric characters and optionally fractional
+ * numbers starting with a decimal point.
+ * @return {number} Negative if str1 < str2, 0 is str1 == str2, positive if
+ * str1 > str2.
+ * @private
+ */
+goog.string.numberAwareCompare_ = function(str1, str2, tokenizerRegExp) {
+ if (str1 == str2) {
+ return 0;
+ }
+ if (!str1) {
+ return -1;
+ }
+ if (!str2) {
+ return 1;
+ }
+
+ // Using match to split the entire string ahead of time turns out to be faster
+ // for most inputs than using RegExp.exec or iterating over each character.
+ var tokens1 = str1.toLowerCase().match(tokenizerRegExp);
+ var tokens2 = str2.toLowerCase().match(tokenizerRegExp);
+
+ var count = Math.min(tokens1.length, tokens2.length);
+
+ for (var i = 0; i < count; i++) {
+ var a = tokens1[i];
+ var b = tokens2[i];
+
+ // Compare pairs of tokens, returning if one token sorts before the other.
+ if (a != b) {
+ // Only if both tokens are integers is a special comparison required.
+ // Decimal numbers are sorted as strings (e.g., '.09' < '.1').
+ var num1 = parseInt(a, 10);
+ if (!isNaN(num1)) {
+ var num2 = parseInt(b, 10);
+ if (!isNaN(num2) && num1 - num2) {
+ return num1 - num2;
+ }
+ }
+ return a < b ? -1 : 1;
+ }
+ }
+
+ // If one string is a substring of the other, the shorter string sorts first.
+ if (tokens1.length != tokens2.length) {
+ return tokens1.length - tokens2.length;
+ }
+
+ // The two strings must be equivalent except for case (perfect equality is
+ // tested at the head of the function.) Revert to default ASCII string
+ // comparison to stabilize the sort.
+ return str1 < str2 ? -1 : 1;
+};
+
+
+/**
+ * String comparison function that handles non-negative integer numbers in a
+ * way humans might expect. Using this function, the string 'File 2.jpg' sorts
+ * before 'File 10.jpg', and 'Version 1.9' before 'Version 1.10'. The comparison
+ * is mostly case-insensitive, though strings that are identical except for case
+ * are sorted with the upper-case strings before lower-case.
+ *
+ * This comparison function is up to 50x slower than either the default or the
+ * case-insensitive compare. It should not be used in time-critical code, but
+ * should be fast enough to sort several hundred short strings (like filenames)
+ * with a reasonable delay.
+ *
+ * @param {string} str1 The string to compare in a numerically sensitive way.
+ * @param {string} str2 The string to compare {@code str1} to.
+ * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than
+ * 0 if str1 > str2.
+ */
+goog.string.intAwareCompare = function(str1, str2) {
+ return goog.string.numberAwareCompare_(str1, str2, /\d+|\D+/g);
+};
+
+
+/**
+ * String comparison function that handles non-negative integer and fractional
+ * numbers in a way humans might expect. Using this function, the string
+ * 'File 2.jpg' sorts before 'File 10.jpg', and '3.14' before '3.2'. Equivalent
+ * to {@link goog.string.intAwareCompare} apart from the way how it interprets
+ * dots.
+ *
+ * @param {string} str1 The string to compare in a numerically sensitive way.
+ * @param {string} str2 The string to compare {@code str1} to.
+ * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than
+ * 0 if str1 > str2.
+ */
+goog.string.floatAwareCompare = function(str1, str2) {
+ return goog.string.numberAwareCompare_(str1, str2, /\d+|\.\d+|\D+/g);
+};
+
+
+/**
+ * Alias for {@link goog.string.floatAwareCompare}.
+ *
+ * @param {string} str1
+ * @param {string} str2
+ * @return {number}
+ */
+goog.string.numerateCompare = goog.string.floatAwareCompare;
+
+
+/**
+ * URL-encodes a string
+ * @param {*} str The string to url-encode.
+ * @return {string} An encoded copy of {@code str} that is safe for urls.
+ * Note that '#', ':', and other characters used to delimit portions
+ * of URLs *will* be encoded.
+ */
+goog.string.urlEncode = function(str) {
+ return encodeURIComponent(String(str));
+};
+
+
+/**
+ * URL-decodes the string. We need to specially handle '+'s because
+ * the javascript library doesn't convert them to spaces.
+ * @param {string} str The string to url decode.
+ * @return {string} The decoded {@code str}.
+ */
+goog.string.urlDecode = function(str) {
+ return decodeURIComponent(str.replace(/\+/g, ' '));
+};
+
+
+/**
+ * Converts \n to <br>s or <br />s.
+ * @param {string} str The string in which to convert newlines.
+ * @param {boolean=} opt_xml Whether to use XML compatible tags.
+ * @return {string} A copy of {@code str} with converted newlines.
+ */
+goog.string.newLineToBr = function(str, opt_xml) {
+ return str.replace(/(\r\n|\r|\n)/g, opt_xml ? '<br />' : '<br>');
+};
+
+
+/**
+ * Escapes double quote '"' and single quote '\'' characters in addition to
+ * '&', '<', and '>' so that a string can be included in an HTML tag attribute
+ * value within double or single quotes.
+ *
+ * It should be noted that > doesn't need to be escaped for the HTML or XML to
+ * be valid, but it has been decided to escape it for consistency with other
+ * implementations.
+ *
+ * With goog.string.DETECT_DOUBLE_ESCAPING, this function escapes also the
+ * lowercase letter "e".
+ *
+ * NOTE(user):
+ * HtmlEscape is often called during the generation of large blocks of HTML.
+ * Using statics for the regular expressions and strings is an optimization
+ * that can more than half the amount of time IE spends in this function for
+ * large apps, since strings and regexes both contribute to GC allocations.
+ *
+ * Testing for the presence of a character before escaping increases the number
+ * of function calls, but actually provides a speed increase for the average
+ * case -- since the average case often doesn't require the escaping of all 4
+ * characters and indexOf() is much cheaper than replace().
+ * The worst case does suffer slightly from the additional calls, therefore the
+ * opt_isLikelyToContainHtmlChars option has been included for situations
+ * where all 4 HTML entities are very likely to be present and need escaping.
+ *
+ * Some benchmarks (times tended to fluctuate +-0.05ms):
+ * FireFox IE6
+ * (no chars / average (mix of cases) / all 4 chars)
+ * no checks 0.13 / 0.22 / 0.22 0.23 / 0.53 / 0.80
+ * indexOf 0.08 / 0.17 / 0.26 0.22 / 0.54 / 0.84
+ * indexOf + re test 0.07 / 0.17 / 0.28 0.19 / 0.50 / 0.85
+ *
+ * An additional advantage of checking if replace actually needs to be called
+ * is a reduction in the number of object allocations, so as the size of the
+ * application grows the difference between the various methods would increase.
+ *
+ * @param {string} str string to be escaped.
+ * @param {boolean=} opt_isLikelyToContainHtmlChars Don't perform a check to see
+ * if the character needs replacing - use this option if you expect each of
+ * the characters to appear often. Leave false if you expect few html
+ * characters to occur in your strings, such as if you are escaping HTML.
+ * @return {string} An escaped copy of {@code str}.
+ */
+goog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {
+
+ if (opt_isLikelyToContainHtmlChars) {
+ str = str.replace(goog.string.AMP_RE_, '&amp;')
+ .replace(goog.string.LT_RE_, '&lt;')
+ .replace(goog.string.GT_RE_, '&gt;')
+ .replace(goog.string.QUOT_RE_, '&quot;')
+ .replace(goog.string.SINGLE_QUOTE_RE_, '&#39;')
+ .replace(goog.string.NULL_RE_, '&#0;');
+ if (goog.string.DETECT_DOUBLE_ESCAPING) {
+ str = str.replace(goog.string.E_RE_, '&#101;');
+ }
+ return str;
+
+ } else {
+ // quick test helps in the case when there are no chars to replace, in
+ // worst case this makes barely a difference to the time taken
+ if (!goog.string.ALL_RE_.test(str)) return str;
+
+ // str.indexOf is faster than regex.test in this case
+ if (str.indexOf('&') != -1) {
+ str = str.replace(goog.string.AMP_RE_, '&amp;');
+ }
+ if (str.indexOf('<') != -1) {
+ str = str.replace(goog.string.LT_RE_, '&lt;');
+ }
+ if (str.indexOf('>') != -1) {
+ str = str.replace(goog.string.GT_RE_, '&gt;');
+ }
+ if (str.indexOf('"') != -1) {
+ str = str.replace(goog.string.QUOT_RE_, '&quot;');
+ }
+ if (str.indexOf('\'') != -1) {
+ str = str.replace(goog.string.SINGLE_QUOTE_RE_, '&#39;');
+ }
+ if (str.indexOf('\x00') != -1) {
+ str = str.replace(goog.string.NULL_RE_, '&#0;');
+ }
+ if (goog.string.DETECT_DOUBLE_ESCAPING && str.indexOf('e') != -1) {
+ str = str.replace(goog.string.E_RE_, '&#101;');
+ }
+ return str;
+ }
+};
+
+
+/**
+ * Regular expression that matches an ampersand, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.AMP_RE_ = /&/g;
+
+
+/**
+ * Regular expression that matches a less than sign, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.LT_RE_ = /</g;
+
+
+/**
+ * Regular expression that matches a greater than sign, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.GT_RE_ = />/g;
+
+
+/**
+ * Regular expression that matches a double quote, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.QUOT_RE_ = /"/g;
+
+
+/**
+ * Regular expression that matches a single quote, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.SINGLE_QUOTE_RE_ = /'/g;
+
+
+/**
+ * Regular expression that matches null character, for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.NULL_RE_ = /\x00/g;
+
+
+/**
+ * Regular expression that matches a lowercase letter "e", for use in escaping.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.E_RE_ = /e/g;
+
+
+/**
+ * Regular expression that matches any character that needs to be escaped.
+ * @const {!RegExp}
+ * @private
+ */
+goog.string.ALL_RE_ =
+ (goog.string.DETECT_DOUBLE_ESCAPING ? /[\x00&<>"'e]/ : /[\x00&<>"']/);
+
+
+/**
+ * Unescapes an HTML string.
+ *
+ * @param {string} str The string to unescape.
+ * @return {string} An unescaped copy of {@code str}.
+ */
+goog.string.unescapeEntities = function(str) {
+ if (goog.string.contains(str, '&')) {
+ // We are careful not to use a DOM if we do not have one or we explicitly
+ // requested non-DOM html unescaping.
+ if (!goog.string.FORCE_NON_DOM_HTML_UNESCAPING &&
+ 'document' in goog.global) {
+ return goog.string.unescapeEntitiesUsingDom_(str);
+ } else {
+ // Fall back on pure XML entities
+ return goog.string.unescapePureXmlEntities_(str);
+ }
+ }
+ return str;
+};
+
+
+/**
+ * Unescapes a HTML string using the provided document.
+ *
+ * @param {string} str The string to unescape.
+ * @param {!Document} document A document to use in escaping the string.
+ * @return {string} An unescaped copy of {@code str}.
+ */
+goog.string.unescapeEntitiesWithDocument = function(str, document) {
+ if (goog.string.contains(str, '&')) {
+ return goog.string.unescapeEntitiesUsingDom_(str, document);
+ }
+ return str;
+};
+
+
+/**
+ * Unescapes an HTML string using a DOM to resolve non-XML, non-numeric
+ * entities. This function is XSS-safe and whitespace-preserving.
+ * @private
+ * @param {string} str The string to unescape.
+ * @param {Document=} opt_document An optional document to use for creating
+ * elements. If this is not specified then the default window.document
+ * will be used.
+ * @return {string} The unescaped {@code str} string.
+ */
+goog.string.unescapeEntitiesUsingDom_ = function(str, opt_document) {
+ /** @type {!Object<string, string>} */
+ var seen = {'&amp;': '&', '&lt;': '<', '&gt;': '>', '&quot;': '"'};
+ var div;
+ if (opt_document) {
+ div = opt_document.createElement('div');
+ } else {
+ div = goog.global.document.createElement('div');
+ }
+ // Match as many valid entity characters as possible. If the actual entity
+ // happens to be shorter, it will still work as innerHTML will return the
+ // trailing characters unchanged. Since the entity characters do not include
+ // open angle bracket, there is no chance of XSS from the innerHTML use.
+ // Since no whitespace is passed to innerHTML, whitespace is preserved.
+ return str.replace(goog.string.HTML_ENTITY_PATTERN_, function(s, entity) {
+ // Check for cached entity.
+ var value = seen[s];
+ if (value) {
+ return value;
+ }
+ // Check for numeric entity.
+ if (entity.charAt(0) == '#') {
+ // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex numbers.
+ var n = Number('0' + entity.substr(1));
+ if (!isNaN(n)) {
+ value = String.fromCharCode(n);
+ }
+ }
+ // Fall back to innerHTML otherwise.
+ if (!value) {
+ // Append a non-entity character to avoid a bug in Webkit that parses
+ // an invalid entity at the end of innerHTML text as the empty string.
+ div.innerHTML = s + ' ';
+ // Then remove the trailing character from the result.
+ value = div.firstChild.nodeValue.slice(0, -1);
+ }
+ // Cache and return.
+ return seen[s] = value;
+ });
+};
+
+
+/**
+ * Unescapes XML entities.
+ * @private
+ * @param {string} str The string to unescape.
+ * @return {string} An unescaped copy of {@code str}.
+ */
+goog.string.unescapePureXmlEntities_ = function(str) {
+ return str.replace(/&([^;]+);/g, function(s, entity) {
+ switch (entity) {
+ case 'amp':
+ return '&';
+ case 'lt':
+ return '<';
+ case 'gt':
+ return '>';
+ case 'quot':
+ return '"';
+ default:
+ if (entity.charAt(0) == '#') {
+ // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex.
+ var n = Number('0' + entity.substr(1));
+ if (!isNaN(n)) {
+ return String.fromCharCode(n);
+ }
+ }
+ // For invalid entities we just return the entity
+ return s;
+ }
+ });
+};
+
+
+/**
+ * Regular expression that matches an HTML entity.
+ * See also HTML5: Tokenization / Tokenizing character references.
+ * @private
+ * @type {!RegExp}
+ */
+goog.string.HTML_ENTITY_PATTERN_ = /&([^;\s<&]+);?/g;
+
+
+/**
+ * Do escaping of whitespace to preserve spatial formatting. We use character
+ * entity #160 to make it safer for xml.
+ * @param {string} str The string in which to escape whitespace.
+ * @param {boolean=} opt_xml Whether to use XML compatible tags.
+ * @return {string} An escaped copy of {@code str}.
+ */
+goog.string.whitespaceEscape = function(str, opt_xml) {
+ // This doesn't use goog.string.preserveSpaces for backwards compatibility.
+ return goog.string.newLineToBr(str.replace(/ /g, ' &#160;'), opt_xml);
+};
+
+
+/**
+ * Preserve spaces that would be otherwise collapsed in HTML by replacing them
+ * with non-breaking space Unicode characters.
+ * @param {string} str The string in which to preserve whitespace.
+ * @return {string} A copy of {@code str} with preserved whitespace.
+ */
+goog.string.preserveSpaces = function(str) {
+ return str.replace(/(^|[\n ]) /g, '$1' + goog.string.Unicode.NBSP);
+};
+
+
+/**
+ * Strip quote characters around a string. The second argument is a string of
+ * characters to treat as quotes. This can be a single character or a string of
+ * multiple character and in that case each of those are treated as possible
+ * quote characters. For example:
+ *
+ * <pre>
+ * goog.string.stripQuotes('"abc"', '"`') --> 'abc'
+ * goog.string.stripQuotes('`abc`', '"`') --> 'abc'
+ * </pre>
+ *
+ * @param {string} str The string to strip.
+ * @param {string} quoteChars The quote characters to strip.
+ * @return {string} A copy of {@code str} without the quotes.
+ */
+goog.string.stripQuotes = function(str, quoteChars) {
+ var length = quoteChars.length;
+ for (var i = 0; i < length; i++) {
+ var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);
+ if (str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {
+ return str.substring(1, str.length - 1);
+ }
+ }
+ return str;
+};
+
+
+/**
+ * Truncates a string to a certain length and adds '...' if necessary. The
+ * length also accounts for the ellipsis, so a maximum length of 10 and a string
+ * 'Hello World!' produces 'Hello W...'.
+ * @param {string} str The string to truncate.
+ * @param {number} chars Max number of characters.
+ * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped
+ * characters from being cut off in the middle.
+ * @return {string} The truncated {@code str} string.
+ */
+goog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {
+ if (opt_protectEscapedCharacters) {
+ str = goog.string.unescapeEntities(str);
+ }
+
+ if (str.length > chars) {
+ str = str.substring(0, chars - 3) + '...';
+ }
+
+ if (opt_protectEscapedCharacters) {
+ str = goog.string.htmlEscape(str);
+ }
+
+ return str;
+};
+
+
+/**
+ * Truncate a string in the middle, adding "..." if necessary,
+ * and favoring the beginning of the string.
+ * @param {string} str The string to truncate the middle of.
+ * @param {number} chars Max number of characters.
+ * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped
+ * characters from being cutoff in the middle.
+ * @param {number=} opt_trailingChars Optional number of trailing characters to
+ * leave at the end of the string, instead of truncating as close to the
+ * middle as possible.
+ * @return {string} A truncated copy of {@code str}.
+ */
+goog.string.truncateMiddle = function(
+ str, chars, opt_protectEscapedCharacters, opt_trailingChars) {
+ if (opt_protectEscapedCharacters) {
+ str = goog.string.unescapeEntities(str);
+ }
+
+ if (opt_trailingChars && str.length > chars) {
+ if (opt_trailingChars > chars) {
+ opt_trailingChars = chars;
+ }
+ var endPoint = str.length - opt_trailingChars;
+ var startPoint = chars - opt_trailingChars;
+ str = str.substring(0, startPoint) + '...' + str.substring(endPoint);
+ } else if (str.length > chars) {
+ // Favor the beginning of the string:
+ var half = Math.floor(chars / 2);
+ var endPos = str.length - half;
+ half += chars % 2;
+ str = str.substring(0, half) + '...' + str.substring(endPos);
+ }
+
+ if (opt_protectEscapedCharacters) {
+ str = goog.string.htmlEscape(str);
+ }
+
+ return str;
+};
+
+
+/**
+ * Special chars that need to be escaped for goog.string.quote.
+ * @private {!Object<string, string>}
+ */
+goog.string.specialEscapeChars_ = {
+ '\0': '\\0',
+ '\b': '\\b',
+ '\f': '\\f',
+ '\n': '\\n',
+ '\r': '\\r',
+ '\t': '\\t',
+ '\x0B': '\\x0B', // '\v' is not supported in JScript
+ '"': '\\"',
+ '\\': '\\\\',
+ // To support the use case of embedding quoted strings inside of script
+ // tags, we have to make sure HTML comments and opening/closing script tags do
+ // not appear in the resulting string. The specific strings that must be
+ // escaped are documented at:
+ // http://www.w3.org/TR/html51/semantics.html#restrictions-for-contents-of-script-elements
+ '<': '\x3c'
+};
+
+
+/**
+ * Character mappings used internally for goog.string.escapeChar.
+ * @private {!Object<string, string>}
+ */
+goog.string.jsEscapeCache_ = {
+ '\'': '\\\''
+};
+
+
+/**
+ * Encloses a string in double quotes and escapes characters so that the
+ * string is a valid JS string. The resulting string is safe to embed in
+ * `<script>` tags as "<" is escaped.
+ * @param {string} s The string to quote.
+ * @return {string} A copy of {@code s} surrounded by double quotes.
+ */
+goog.string.quote = function(s) {
+ s = String(s);
+ var sb = ['"'];
+ for (var i = 0; i < s.length; i++) {
+ var ch = s.charAt(i);
+ var cc = ch.charCodeAt(0);
+ sb[i + 1] = goog.string.specialEscapeChars_[ch] ||
+ ((cc > 31 && cc < 127) ? ch : goog.string.escapeChar(ch));
+ }
+ sb.push('"');
+ return sb.join('');
+};
+
+
+/**
+ * Takes a string and returns the escaped string for that character.
+ * @param {string} str The string to escape.
+ * @return {string} An escaped string representing {@code str}.
+ */
+goog.string.escapeString = function(str) {
+ var sb = [];
+ for (var i = 0; i < str.length; i++) {
+ sb[i] = goog.string.escapeChar(str.charAt(i));
+ }
+ return sb.join('');
+};
+
+
+/**
+ * Takes a character and returns the escaped string for that character. For
+ * example escapeChar(String.fromCharCode(15)) -> "\\x0E".
+ * @param {string} c The character to escape.
+ * @return {string} An escaped string representing {@code c}.
+ */
+goog.string.escapeChar = function(c) {
+ if (c in goog.string.jsEscapeCache_) {
+ return goog.string.jsEscapeCache_[c];
+ }
+
+ if (c in goog.string.specialEscapeChars_) {
+ return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c];
+ }
+
+ var rv = c;
+ var cc = c.charCodeAt(0);
+ if (cc > 31 && cc < 127) {
+ rv = c;
+ } else {
+ // tab is 9 but handled above
+ if (cc < 256) {
+ rv = '\\x';
+ if (cc < 16 || cc > 256) {
+ rv += '0';
+ }
+ } else {
+ rv = '\\u';
+ if (cc < 4096) { // \u1000
+ rv += '0';
+ }
+ }
+ rv += cc.toString(16).toUpperCase();
+ }
+
+ return goog.string.jsEscapeCache_[c] = rv;
+};
+
+
+/**
+ * Determines whether a string contains a substring.
+ * @param {string} str The string to search.
+ * @param {string} subString The substring to search for.
+ * @return {boolean} Whether {@code str} contains {@code subString}.
+ */
+goog.string.contains = function(str, subString) {
+ return str.indexOf(subString) != -1;
+};
+
+
+/**
+ * Determines whether a string contains a substring, ignoring case.
+ * @param {string} str The string to search.
+ * @param {string} subString The substring to search for.
+ * @return {boolean} Whether {@code str} contains {@code subString}.
+ */
+goog.string.caseInsensitiveContains = function(str, subString) {
+ return goog.string.contains(str.toLowerCase(), subString.toLowerCase());
+};
+
+
+/**
+ * Returns the non-overlapping occurrences of ss in s.
+ * If either s or ss evalutes to false, then returns zero.
+ * @param {string} s The string to look in.
+ * @param {string} ss The string to look for.
+ * @return {number} Number of occurrences of ss in s.
+ */
+goog.string.countOf = function(s, ss) {
+ return s && ss ? s.split(ss).length - 1 : 0;
+};
+
+
+/**
+ * Removes a substring of a specified length at a specific
+ * index in a string.
+ * @param {string} s The base string from which to remove.
+ * @param {number} index The index at which to remove the substring.
+ * @param {number} stringLength The length of the substring to remove.
+ * @return {string} A copy of {@code s} with the substring removed or the full
+ * string if nothing is removed or the input is invalid.
+ */
+goog.string.removeAt = function(s, index, stringLength) {
+ var resultStr = s;
+ // If the index is greater or equal to 0 then remove substring
+ if (index >= 0 && index < s.length && stringLength > 0) {
+ resultStr = s.substr(0, index) +
+ s.substr(index + stringLength, s.length - index - stringLength);
+ }
+ return resultStr;
+};
+
+
+/**
+ * Removes the first occurrence of a substring from a string.
+ * @param {string} s The base string from which to remove.
+ * @param {string} ss The string to remove.
+ * @return {string} A copy of {@code s} with {@code ss} removed or the full
+ * string if nothing is removed.
+ */
+goog.string.remove = function(s, ss) {
+ var re = new RegExp(goog.string.regExpEscape(ss), '');
+ return s.replace(re, '');
+};
+
+
+/**
+ * Removes all occurrences of a substring from a string.
+ * @param {string} s The base string from which to remove.
+ * @param {string} ss The string to remove.
+ * @return {string} A copy of {@code s} with {@code ss} removed or the full
+ * string if nothing is removed.
+ */
+goog.string.removeAll = function(s, ss) {
+ var re = new RegExp(goog.string.regExpEscape(ss), 'g');
+ return s.replace(re, '');
+};
+
+
+/**
+ * Escapes characters in the string that are not safe to use in a RegExp.
+ * @param {*} s The string to escape. If not a string, it will be casted
+ * to one.
+ * @return {string} A RegExp safe, escaped copy of {@code s}.
+ */
+goog.string.regExpEscape = function(s) {
+ return String(s)
+ .replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, '\\$1')
+ .replace(/\x08/g, '\\x08');
+};
+
+
+/**
+ * Repeats a string n times.
+ * @param {string} string The string to repeat.
+ * @param {number} length The number of times to repeat.
+ * @return {string} A string containing {@code length} repetitions of
+ * {@code string}.
+ */
+goog.string.repeat = (String.prototype.repeat) ? function(string, length) {
+ // The native method is over 100 times faster than the alternative.
+ return string.repeat(length);
+} : function(string, length) {
+ return new Array(length + 1).join(string);
+};
+
+
+/**
+ * Pads number to given length and optionally rounds it to a given precision.
+ * For example:
+ * <pre>padNumber(1.25, 2, 3) -> '01.250'
+ * padNumber(1.25, 2) -> '01.25'
+ * padNumber(1.25, 2, 1) -> '01.3'
+ * padNumber(1.25, 0) -> '1.25'</pre>
+ *
+ * @param {number} num The number to pad.
+ * @param {number} length The desired length.
+ * @param {number=} opt_precision The desired precision.
+ * @return {string} {@code num} as a string with the given options.
+ */
+goog.string.padNumber = function(num, length, opt_precision) {
+ var s = goog.isDef(opt_precision) ? num.toFixed(opt_precision) : String(num);
+ var index = s.indexOf('.');
+ if (index == -1) {
+ index = s.length;
+ }
+ return goog.string.repeat('0', Math.max(0, length - index)) + s;
+};
+
+
+/**
+ * Returns a string representation of the given object, with
+ * null and undefined being returned as the empty string.
+ *
+ * @param {*} obj The object to convert.
+ * @return {string} A string representation of the {@code obj}.
+ */
+goog.string.makeSafe = function(obj) {
+ return obj == null ? '' : String(obj);
+};
+
+
+/**
+ * Concatenates string expressions. This is useful
+ * since some browsers are very inefficient when it comes to using plus to
+ * concat strings. Be careful when using null and undefined here since
+ * these will not be included in the result. If you need to represent these
+ * be sure to cast the argument to a String first.
+ * For example:
+ * <pre>buildString('a', 'b', 'c', 'd') -> 'abcd'
+ * buildString(null, undefined) -> ''
+ * </pre>
+ * @param {...*} var_args A list of strings to concatenate. If not a string,
+ * it will be casted to one.
+ * @return {string} The concatenation of {@code var_args}.
+ */
+goog.string.buildString = function(var_args) {
+ return Array.prototype.join.call(arguments, '');
+};
+
+
+/**
+ * Returns a string with at least 64-bits of randomness.
+ *
+ * Doesn't trust Javascript's random function entirely. Uses a combination of
+ * random and current timestamp, and then encodes the string in base-36 to
+ * make it shorter.
+ *
+ * @return {string} A random string, e.g. sn1s7vb4gcic.
+ */
+goog.string.getRandomString = function() {
+ var x = 2147483648;
+ return Math.floor(Math.random() * x).toString(36) +
+ Math.abs(Math.floor(Math.random() * x) ^ goog.now()).toString(36);
+};
+
+
+/**
+ * Compares two version numbers.
+ *
+ * @param {string|number} version1 Version of first item.
+ * @param {string|number} version2 Version of second item.
+ *
+ * @return {number} 1 if {@code version1} is higher.
+ * 0 if arguments are equal.
+ * -1 if {@code version2} is higher.
+ */
+goog.string.compareVersions = function(version1, version2) {
+ var order = 0;
+ // Trim leading and trailing whitespace and split the versions into
+ // subversions.
+ var v1Subs = goog.string.trim(String(version1)).split('.');
+ var v2Subs = goog.string.trim(String(version2)).split('.');
+ var subCount = Math.max(v1Subs.length, v2Subs.length);
+
+ // Iterate over the subversions, as long as they appear to be equivalent.
+ for (var subIdx = 0; order == 0 && subIdx < subCount; subIdx++) {
+ var v1Sub = v1Subs[subIdx] || '';
+ var v2Sub = v2Subs[subIdx] || '';
+
+ // Split the subversions into pairs of numbers and qualifiers (like 'b').
+ // Two different RegExp objects are needed because they are both using
+ // the 'g' flag.
+ var v1CompParser = new RegExp('(\\d*)(\\D*)', 'g');
+ var v2CompParser = new RegExp('(\\d*)(\\D*)', 'g');
+ do {
+ var v1Comp = v1CompParser.exec(v1Sub) || ['', '', ''];
+ var v2Comp = v2CompParser.exec(v2Sub) || ['', '', ''];
+ // Break if there are no more matches.
+ if (v1Comp[0].length == 0 && v2Comp[0].length == 0) {
+ break;
+ }
+
+ // Parse the numeric part of the subversion. A missing number is
+ // equivalent to 0.
+ var v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10);
+ var v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);
+
+ // Compare the subversion components. The number has the highest
+ // precedence. Next, if the numbers are equal, a subversion without any
+ // qualifier is always higher than a subversion with any qualifier. Next,
+ // the qualifiers are compared as strings.
+ order = goog.string.compareElements_(v1CompNum, v2CompNum) ||
+ goog.string.compareElements_(
+ v1Comp[2].length == 0, v2Comp[2].length == 0) ||
+ goog.string.compareElements_(v1Comp[2], v2Comp[2]);
+ // Stop as soon as an inequality is discovered.
+ } while (order == 0);
+ }
+
+ return order;
+};
+
+
+/**
+ * Compares elements of a version number.
+ *
+ * @param {string|number|boolean} left An element from a version number.
+ * @param {string|number|boolean} right An element from a version number.
+ *
+ * @return {number} 1 if {@code left} is higher.
+ * 0 if arguments are equal.
+ * -1 if {@code right} is higher.
+ * @private
+ */
+goog.string.compareElements_ = function(left, right) {
+ if (left < right) {
+ return -1;
+ } else if (left > right) {
+ return 1;
+ }
+ return 0;
+};
+
+
+/**
+ * String hash function similar to java.lang.String.hashCode().
+ * The hash code for a string is computed as
+ * s[0] * 31 ^ (n - 1) + s[1] * 31 ^ (n - 2) + ... + s[n - 1],
+ * where s[i] is the ith character of the string and n is the length of
+ * the string. We mod the result to make it between 0 (inclusive) and 2^32
+ * (exclusive).
+ * @param {string} str A string.
+ * @return {number} Hash value for {@code str}, between 0 (inclusive) and 2^32
+ * (exclusive). The empty string returns 0.
+ */
+goog.string.hashCode = function(str) {
+ var result = 0;
+ for (var i = 0; i < str.length; ++i) {
+ // Normalize to 4 byte range, 0 ... 2^32.
+ result = (31 * result + str.charCodeAt(i)) >>> 0;
+ }
+ return result;
+};
+
+
+/**
+ * The most recent unique ID. |0 is equivalent to Math.floor in this case.
+ * @type {number}
+ * @private
+ */
+goog.string.uniqueStringCounter_ = Math.random() * 0x80000000 | 0;
+
+
+/**
+ * Generates and returns a string which is unique in the current document.
+ * This is useful, for example, to create unique IDs for DOM elements.
+ * @return {string} A unique id.
+ */
+goog.string.createUniqueString = function() {
+ return 'goog_' + goog.string.uniqueStringCounter_++;
+};
+
+
+/**
+ * Converts the supplied string to a number, which may be Infinity or NaN.
+ * This function strips whitespace: (toNumber(' 123') === 123)
+ * This function accepts scientific notation: (toNumber('1e1') === 10)
+ *
+ * This is better than Javascript's built-in conversions because, sadly:
+ * (Number(' ') === 0) and (parseFloat('123a') === 123)
+ *
+ * @param {string} str The string to convert.
+ * @return {number} The number the supplied string represents, or NaN.
+ */
+goog.string.toNumber = function(str) {
+ var num = Number(str);
+ if (num == 0 && goog.string.isEmptyOrWhitespace(str)) {
+ return NaN;
+ }
+ return num;
+};
+
+
+/**
+ * Returns whether the given string is lower camel case (e.g. "isFooBar").
+ *
+ * Note that this assumes the string is entirely letters.
+ * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms
+ *
+ * @param {string} str String to test.
+ * @return {boolean} Whether the string is lower camel case.
+ */
+goog.string.isLowerCamelCase = function(str) {
+ return /^[a-z]+([A-Z][a-z]*)*$/.test(str);
+};
+
+
+/**
+ * Returns whether the given string is upper camel case (e.g. "FooBarBaz").
+ *
+ * Note that this assumes the string is entirely letters.
+ * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms
+ *
+ * @param {string} str String to test.
+ * @return {boolean} Whether the string is upper camel case.
+ */
+goog.string.isUpperCamelCase = function(str) {
+ return /^([A-Z][a-z]*)+$/.test(str);
+};
+
+
+/**
+ * Converts a string from selector-case to camelCase (e.g. from
+ * "multi-part-string" to "multiPartString"), useful for converting
+ * CSS selectors and HTML dataset keys to their equivalent JS properties.
+ * @param {string} str The string in selector-case form.
+ * @return {string} The string in camelCase form.
+ */
+goog.string.toCamelCase = function(str) {
+ return String(str).replace(
+ /\-([a-z])/g, function(all, match) { return match.toUpperCase(); });
+};
+
+
+/**
+ * Converts a string from camelCase to selector-case (e.g. from
+ * "multiPartString" to "multi-part-string"), useful for converting JS
+ * style and dataset properties to equivalent CSS selectors and HTML keys.
+ * @param {string} str The string in camelCase form.
+ * @return {string} The string in selector-case form.
+ */
+goog.string.toSelectorCase = function(str) {
+ return String(str).replace(/([A-Z])/g, '-$1').toLowerCase();
+};
+
+
+/**
+ * Converts a string into TitleCase. First character of the string is always
+ * capitalized in addition to the first letter of every subsequent word.
+ * Words are delimited by one or more whitespaces by default. Custom delimiters
+ * can optionally be specified to replace the default, which doesn't preserve
+ * whitespace delimiters and instead must be explicitly included if needed.
+ *
+ * Default delimiter => " ":
+ * goog.string.toTitleCase('oneTwoThree') => 'OneTwoThree'
+ * goog.string.toTitleCase('one two three') => 'One Two Three'
+ * goog.string.toTitleCase(' one two ') => ' One Two '
+ * goog.string.toTitleCase('one_two_three') => 'One_two_three'
+ * goog.string.toTitleCase('one-two-three') => 'One-two-three'
+ *
+ * Custom delimiter => "_-.":
+ * goog.string.toTitleCase('oneTwoThree', '_-.') => 'OneTwoThree'
+ * goog.string.toTitleCase('one two three', '_-.') => 'One two three'
+ * goog.string.toTitleCase(' one two ', '_-.') => ' one two '
+ * goog.string.toTitleCase('one_two_three', '_-.') => 'One_Two_Three'
+ * goog.string.toTitleCase('one-two-three', '_-.') => 'One-Two-Three'
+ * goog.string.toTitleCase('one...two...three', '_-.') => 'One...Two...Three'
+ * goog.string.toTitleCase('one. two. three', '_-.') => 'One. two. three'
+ * goog.string.toTitleCase('one-two.three', '_-.') => 'One-Two.Three'
+ *
+ * @param {string} str String value in camelCase form.
+ * @param {string=} opt_delimiters Custom delimiter character set used to
+ * distinguish words in the string value. Each character represents a
+ * single delimiter. When provided, default whitespace delimiter is
+ * overridden and must be explicitly included if needed.
+ * @return {string} String value in TitleCase form.
+ */
+goog.string.toTitleCase = function(str, opt_delimiters) {
+ var delimiters = goog.isString(opt_delimiters) ?
+ goog.string.regExpEscape(opt_delimiters) :
+ '\\s';
+
+ // For IE8, we need to prevent using an empty character set. Otherwise,
+ // incorrect matching will occur.
+ delimiters = delimiters ? '|[' + delimiters + ']+' : '';
+
+ var regexp = new RegExp('(^' + delimiters + ')([a-z])', 'g');
+ return str.replace(
+ regexp, function(all, p1, p2) { return p1 + p2.toUpperCase(); });
+};
+
+
+/**
+ * Capitalizes a string, i.e. converts the first letter to uppercase
+ * and all other letters to lowercase, e.g.:
+ *
+ * goog.string.capitalize('one') => 'One'
+ * goog.string.capitalize('ONE') => 'One'
+ * goog.string.capitalize('one two') => 'One two'
+ *
+ * Note that this function does not trim initial whitespace.
+ *
+ * @param {string} str String value to capitalize.
+ * @return {string} String value with first letter in uppercase.
+ */
+goog.string.capitalize = function(str) {
+ return String(str.charAt(0)).toUpperCase() +
+ String(str.substr(1)).toLowerCase();
+};
+
+
+/**
+ * Parse a string in decimal or hexidecimal ('0xFFFF') form.
+ *
+ * To parse a particular radix, please use parseInt(string, radix) directly. See
+ * https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseInt
+ *
+ * This is a wrapper for the built-in parseInt function that will only parse
+ * numbers as base 10 or base 16. Some JS implementations assume strings
+ * starting with "0" are intended to be octal. ES3 allowed but discouraged
+ * this behavior. ES5 forbids it. This function emulates the ES5 behavior.
+ *
+ * For more information, see Mozilla JS Reference: http://goo.gl/8RiFj
+ *
+ * @param {string|number|null|undefined} value The value to be parsed.
+ * @return {number} The number, parsed. If the string failed to parse, this
+ * will be NaN.
+ */
+goog.string.parseInt = function(value) {
+ // Force finite numbers to strings.
+ if (isFinite(value)) {
+ value = String(value);
+ }
+
+ if (goog.isString(value)) {
+ // If the string starts with '0x' or '-0x', parse as hex.
+ return /^\s*-?0x/i.test(value) ? parseInt(value, 16) : parseInt(value, 10);
+ }
+
+ return NaN;
+};
+
+
+/**
+ * Splits a string on a separator a limited number of times.
+ *
+ * This implementation is more similar to Python or Java, where the limit
+ * parameter specifies the maximum number of splits rather than truncating
+ * the number of results.
+ *
+ * See http://docs.python.org/2/library/stdtypes.html#str.split
+ * See JavaDoc: http://goo.gl/F2AsY
+ * See Mozilla reference: http://goo.gl/dZdZs
+ *
+ * @param {string} str String to split.
+ * @param {string} separator The separator.
+ * @param {number} limit The limit to the number of splits. The resulting array
+ * will have a maximum length of limit+1. Negative numbers are the same
+ * as zero.
+ * @return {!Array<string>} The string, split.
+ */
+goog.string.splitLimit = function(str, separator, limit) {
+ var parts = str.split(separator);
+ var returnVal = [];
+
+ // Only continue doing this while we haven't hit the limit and we have
+ // parts left.
+ while (limit > 0 && parts.length) {
+ returnVal.push(parts.shift());
+ limit--;
+ }
+
+ // If there are remaining parts, append them to the end.
+ if (parts.length) {
+ returnVal.push(parts.join(separator));
+ }
+
+ return returnVal;
+};
+
+
+/**
+ * Finds the characters to the right of the last instance of any separator
+ *
+ * This function is similar to goog.string.path.baseName, except it can take a
+ * list of characters to split the string on. It will return the rightmost
+ * grouping of characters to the right of any separator as a left-to-right
+ * oriented string.
+ *
+ * @see goog.string.path.baseName
+ * @param {string} str The string
+ * @param {string|!Array<string>} separators A list of separator characters
+ * @return {string} The last part of the string with respect to the separators
+ */
+goog.string.lastComponent = function(str, separators) {
+ if (!separators) {
+ return str;
+ } else if (typeof separators == 'string') {
+ separators = [separators];
+ }
+
+ var lastSeparatorIndex = -1;
+ for (var i = 0; i < separators.length; i++) {
+ if (separators[i] == '') {
+ continue;
+ }
+ var currentSeparatorIndex = str.lastIndexOf(separators[i]);
+ if (currentSeparatorIndex > lastSeparatorIndex) {
+ lastSeparatorIndex = currentSeparatorIndex;
+ }
+ }
+ if (lastSeparatorIndex == -1) {
+ return str;
+ }
+ return str.slice(lastSeparatorIndex + 1);
+};
+
+
+/**
+ * Computes the Levenshtein edit distance between two strings.
+ * @param {string} a
+ * @param {string} b
+ * @return {number} The edit distance between the two strings.
+ */
+goog.string.editDistance = function(a, b) {
+ var v0 = [];
+ var v1 = [];
+
+ if (a == b) {
+ return 0;
+ }
+
+ if (!a.length || !b.length) {
+ return Math.max(a.length, b.length);
+ }
+
+ for (var i = 0; i < b.length + 1; i++) {
+ v0[i] = i;
+ }
+
+ for (var i = 0; i < a.length; i++) {
+ v1[0] = i + 1;
+
+ for (var j = 0; j < b.length; j++) {
+ var cost = Number(a[i] != b[j]);
+ // Cost for the substring is the minimum of adding one character, removing
+ // one character, or a swap.
+ v1[j + 1] = Math.min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);
+ }
+
+ for (var j = 0; j < v0.length; j++) {
+ v0[j] = v1[j];
+ }
+ }
+
+ return v1[b.length];
+};
+
+// Copyright 2008 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities to check the preconditions, postconditions and
+ * invariants runtime.
+ *
+ * Methods in this package should be given special treatment by the compiler
+ * for type-inference. For example, <code>goog.asserts.assert(foo)</code>
+ * will restrict <code>foo</code> to a truthy value.
+ *
+ * The compiler has an option to disable asserts. So code like:
+ * <code>
+ * var x = goog.asserts.assert(foo()); goog.asserts.assert(bar());
+ * </code>
+ * will be transformed into:
+ * <code>
+ * var x = foo();
+ * </code>
+ * The compiler will leave in foo() (because its return value is used),
+ * but it will remove bar() because it assumes it does not have side-effects.
+ *
+ * @author agrieve@google.com (Andrew Grieve)
+ */
+
+goog.provide('goog.asserts');
+goog.provide('goog.asserts.AssertionError');
+
+goog.require('goog.debug.Error');
+goog.require('goog.dom.NodeType');
+goog.require('goog.string');
+
+
+/**
+ * @define {boolean} Whether to strip out asserts or to leave them in.
+ */
+goog.define('goog.asserts.ENABLE_ASSERTS', goog.DEBUG);
+
+
+
+/**
+ * Error object for failed assertions.
+ * @param {string} messagePattern The pattern that was used to form message.
+ * @param {!Array<*>} messageArgs The items to substitute into the pattern.
+ * @constructor
+ * @extends {goog.debug.Error}
+ * @final
+ */
+goog.asserts.AssertionError = function(messagePattern, messageArgs) {
+ messageArgs.unshift(messagePattern);
+ goog.debug.Error.call(this, goog.string.subs.apply(null, messageArgs));
+ // Remove the messagePattern afterwards to avoid permanently modifying the
+ // passed in array.
+ messageArgs.shift();
+
+ /**
+ * The message pattern used to format the error message. Error handlers can
+ * use this to uniquely identify the assertion.
+ * @type {string}
+ */
+ this.messagePattern = messagePattern;
+};
+goog.inherits(goog.asserts.AssertionError, goog.debug.Error);
+
+
+/** @override */
+goog.asserts.AssertionError.prototype.name = 'AssertionError';
+
+
+/**
+ * The default error handler.
+ * @param {!goog.asserts.AssertionError} e The exception to be handled.
+ */
+goog.asserts.DEFAULT_ERROR_HANDLER = function(e) {
+ throw e;
+};
+
+
+/**
+ * The handler responsible for throwing or logging assertion errors.
+ * @private {function(!goog.asserts.AssertionError)}
+ */
+goog.asserts.errorHandler_ = goog.asserts.DEFAULT_ERROR_HANDLER;
+
+
+/**
+ * Throws an exception with the given message and "Assertion failed" prefixed
+ * onto it.
+ * @param {string} defaultMessage The message to use if givenMessage is empty.
+ * @param {Array<*>} defaultArgs The substitution arguments for defaultMessage.
+ * @param {string|undefined} givenMessage Message supplied by the caller.
+ * @param {Array<*>} givenArgs The substitution arguments for givenMessage.
+ * @throws {goog.asserts.AssertionError} When the value is not a number.
+ * @private
+ */
+goog.asserts.doAssertFailure_ = function(
+ defaultMessage, defaultArgs, givenMessage, givenArgs) {
+ var message = 'Assertion failed';
+ if (givenMessage) {
+ message += ': ' + givenMessage;
+ var args = givenArgs;
+ } else if (defaultMessage) {
+ message += ': ' + defaultMessage;
+ args = defaultArgs;
+ }
+ // The '' + works around an Opera 10 bug in the unit tests. Without it,
+ // a stack trace is added to var message above. With this, a stack trace is
+ // not added until this line (it causes the extra garbage to be added after
+ // the assertion message instead of in the middle of it).
+ var e = new goog.asserts.AssertionError('' + message, args || []);
+ goog.asserts.errorHandler_(e);
+};
+
+
+/**
+ * Sets a custom error handler that can be used to customize the behavior of
+ * assertion failures, for example by turning all assertion failures into log
+ * messages.
+ * @param {function(!goog.asserts.AssertionError)} errorHandler
+ */
+goog.asserts.setErrorHandler = function(errorHandler) {
+ if (goog.asserts.ENABLE_ASSERTS) {
+ goog.asserts.errorHandler_ = errorHandler;
+ }
+};
+
+
+/**
+ * Checks if the condition evaluates to true if goog.asserts.ENABLE_ASSERTS is
+ * true.
+ * @template T
+ * @param {T} condition The condition to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {T} The value of the condition.
+ * @throws {goog.asserts.AssertionError} When the condition evaluates to false.
+ */
+goog.asserts.assert = function(condition, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !condition) {
+ goog.asserts.doAssertFailure_(
+ '', null, opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return condition;
+};
+
+
+/**
+ * Fails if goog.asserts.ENABLE_ASSERTS is true. This function is useful in case
+ * when we want to add a check in the unreachable area like switch-case
+ * statement:
+ *
+ * <pre>
+ * switch(type) {
+ * case FOO: doSomething(); break;
+ * case BAR: doSomethingElse(); break;
+ * default: goog.asserts.fail('Unrecognized type: ' + type);
+ * // We have only 2 types - "default:" section is unreachable code.
+ * }
+ * </pre>
+ *
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @throws {goog.asserts.AssertionError} Failure.
+ */
+goog.asserts.fail = function(opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS) {
+ goog.asserts.errorHandler_(
+ new goog.asserts.AssertionError(
+ 'Failure' + (opt_message ? ': ' + opt_message : ''),
+ Array.prototype.slice.call(arguments, 1)));
+ }
+};
+
+
+/**
+ * Checks if the value is a number if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {number} The value, guaranteed to be a number when asserts enabled.
+ * @throws {goog.asserts.AssertionError} When the value is not a number.
+ */
+goog.asserts.assertNumber = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isNumber(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected number but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {number} */ (value);
+};
+
+
+/**
+ * Checks if the value is a string if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {string} The value, guaranteed to be a string when asserts enabled.
+ * @throws {goog.asserts.AssertionError} When the value is not a string.
+ */
+goog.asserts.assertString = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isString(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected string but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {string} */ (value);
+};
+
+
+/**
+ * Checks if the value is a function if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {!Function} The value, guaranteed to be a function when asserts
+ * enabled.
+ * @throws {goog.asserts.AssertionError} When the value is not a function.
+ */
+goog.asserts.assertFunction = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isFunction(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected function but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {!Function} */ (value);
+};
+
+
+/**
+ * Checks if the value is an Object if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {!Object} The value, guaranteed to be a non-null object.
+ * @throws {goog.asserts.AssertionError} When the value is not an object.
+ */
+goog.asserts.assertObject = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isObject(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected object but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {!Object} */ (value);
+};
+
+
+/**
+ * Checks if the value is an Array if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {!Array<?>} The value, guaranteed to be a non-null array.
+ * @throws {goog.asserts.AssertionError} When the value is not an array.
+ */
+goog.asserts.assertArray = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isArray(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected array but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {!Array<?>} */ (value);
+};
+
+
+/**
+ * Checks if the value is a boolean if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {boolean} The value, guaranteed to be a boolean when asserts are
+ * enabled.
+ * @throws {goog.asserts.AssertionError} When the value is not a boolean.
+ */
+goog.asserts.assertBoolean = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !goog.isBoolean(value)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected boolean but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {boolean} */ (value);
+};
+
+
+/**
+ * Checks if the value is a DOM Element if goog.asserts.ENABLE_ASSERTS is true.
+ * @param {*} value The value to check.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @return {!Element} The value, likely to be a DOM Element when asserts are
+ * enabled.
+ * @throws {goog.asserts.AssertionError} When the value is not an Element.
+ */
+goog.asserts.assertElement = function(value, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS &&
+ (!goog.isObject(value) || value.nodeType != goog.dom.NodeType.ELEMENT)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected Element but got %s: %s.', [goog.typeOf(value), value],
+ opt_message, Array.prototype.slice.call(arguments, 2));
+ }
+ return /** @type {!Element} */ (value);
+};
+
+
+/**
+ * Checks if the value is an instance of the user-defined type if
+ * goog.asserts.ENABLE_ASSERTS is true.
+ *
+ * The compiler may tighten the type returned by this function.
+ *
+ * @param {?} value The value to check.
+ * @param {function(new: T, ...)} type A user-defined constructor.
+ * @param {string=} opt_message Error message in case of failure.
+ * @param {...*} var_args The items to substitute into the failure message.
+ * @throws {goog.asserts.AssertionError} When the value is not an instance of
+ * type.
+ * @return {T}
+ * @template T
+ */
+goog.asserts.assertInstanceof = function(value, type, opt_message, var_args) {
+ if (goog.asserts.ENABLE_ASSERTS && !(value instanceof type)) {
+ goog.asserts.doAssertFailure_(
+ 'Expected instanceof %s but got %s.',
+ [goog.asserts.getType_(type), goog.asserts.getType_(value)],
+ opt_message, Array.prototype.slice.call(arguments, 3));
+ }
+ return value;
+};
+
+
+/**
+ * Checks that no enumerable keys are present in Object.prototype. Such keys
+ * would break most code that use {@code for (var ... in ...)} loops.
+ */
+goog.asserts.assertObjectPrototypeIsIntact = function() {
+ for (var key in Object.prototype) {
+ goog.asserts.fail(key + ' should not be enumerable in Object.prototype.');
+ }
+};
+
+
+/**
+ * Returns the type of a value. If a constructor is passed, and a suitable
+ * string cannot be found, 'unknown type name' will be returned.
+ * @param {*} value A constructor, object, or primitive.
+ * @return {string} The best display name for the value, or 'unknown type name'.
+ * @private
+ */
+goog.asserts.getType_ = function(value) {
+ if (value instanceof Function) {
+ return value.displayName || value.name || 'unknown type name';
+ } else if (value instanceof Object) {
+ return value.constructor.displayName || value.constructor.name ||
+ Object.prototype.toString.call(value);
+ } else {
+ return value === null ? 'null' : typeof value;
+ }
+};
+
+goog.provide('ol.math');
+
+goog.require('goog.asserts');
+
+
+/**
+ * Takes a number and clamps it to within the provided bounds.
+ * @param {number} value The input number.
+ * @param {number} min The minimum value to return.
+ * @param {number} max The maximum value to return.
+ * @return {number} The input number if it is within bounds, or the nearest
+ * number within the bounds.
+ */
+ol.math.clamp = function(value, min, max) {
+ return Math.min(Math.max(value, min), max);
+};
+
+
+/**
+ * Return the hyperbolic cosine of a given number. The method will use the
+ * native `Math.cosh` function if it is available, otherwise the hyperbolic
+ * cosine will be calculated via the reference implementation of the Mozilla
+ * developer network.
+ *
+ * @param {number} x X.
+ * @return {number} Hyperbolic cosine of x.
+ */
+ol.math.cosh = (function() {
+ // Wrapped in a iife, to save the overhead of checking for the native
+ // implementation on every invocation.
+ var cosh;
+ if ('cosh' in Math) {
+ // The environment supports the native Math.cosh function, use it…
+ cosh = Math.cosh;
+ } else {
+ // … else, use the reference implementation of MDN:
+ cosh = function(x) {
+ var y = Math.exp(x);
+ return (y + 1 / y) / 2;
+ };
+ }
+ return cosh;
+}());
+
+
+/**
+ * @param {number} x X.
+ * @return {number} The smallest power of two greater than or equal to x.
+ */
+ol.math.roundUpToPowerOfTwo = function(x) {
+ goog.asserts.assert(0 < x, 'x should be larger than 0');
+ return Math.pow(2, Math.ceil(Math.log(x) / Math.LN2));
+};
+
+
+/**
+ * Returns the square of the closest distance between the point (x, y) and the
+ * line segment (x1, y1) to (x2, y2).
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {number} x1 X1.
+ * @param {number} y1 Y1.
+ * @param {number} x2 X2.
+ * @param {number} y2 Y2.
+ * @return {number} Squared distance.
+ */
+ol.math.squaredSegmentDistance = function(x, y, x1, y1, x2, y2) {
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+ if (dx !== 0 || dy !== 0) {
+ var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);
+ if (t > 1) {
+ x1 = x2;
+ y1 = y2;
+ } else if (t > 0) {
+ x1 += dx * t;
+ y1 += dy * t;
+ }
+ }
+ return ol.math.squaredDistance(x, y, x1, y1);
+};
+
+
+/**
+ * Returns the square of the distance between the points (x1, y1) and (x2, y2).
+ * @param {number} x1 X1.
+ * @param {number} y1 Y1.
+ * @param {number} x2 X2.
+ * @param {number} y2 Y2.
+ * @return {number} Squared distance.
+ */
+ol.math.squaredDistance = function(x1, y1, x2, y2) {
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+ return dx * dx + dy * dy;
+};
+
+
+/**
+ * Solves system of linear equations using Gaussian elimination method.
+ *
+ * @param {Array.<Array.<number>>} mat Augmented matrix (n x n + 1 column)
+ * in row-major order.
+ * @return {Array.<number>} The resulting vector.
+ */
+ol.math.solveLinearSystem = function(mat) {
+ var n = mat.length;
+
+ if (goog.asserts.ENABLE_ASSERTS) {
+ for (var row = 0; row < n; row++) {
+ goog.asserts.assert(mat[row].length == n + 1,
+ 'every row should have correct number of columns');
+ }
+ }
+
+ for (var i = 0; i < n; i++) {
+ // Find max in the i-th column (ignoring i - 1 first rows)
+ var maxRow = i;
+ var maxEl = Math.abs(mat[i][i]);
+ for (var r = i + 1; r < n; r++) {
+ var absValue = Math.abs(mat[r][i]);
+ if (absValue > maxEl) {
+ maxEl = absValue;
+ maxRow = r;
+ }
+ }
+
+ if (maxEl === 0) {
+ return null; // matrix is singular
+ }
+
+ // Swap max row with i-th (current) row
+ var tmp = mat[maxRow];
+ mat[maxRow] = mat[i];
+ mat[i] = tmp;
+
+ // Subtract the i-th row to make all the remaining rows 0 in the i-th column
+ for (var j = i + 1; j < n; j++) {
+ var coef = -mat[j][i] / mat[i][i];
+ for (var k = i; k < n + 1; k++) {
+ if (i == k) {
+ mat[j][k] = 0;
+ } else {
+ mat[j][k] += coef * mat[i][k];
+ }
+ }
+ }
+ }
+
+ // Solve Ax=b for upper triangular matrix A (mat)
+ var x = new Array(n);
+ for (var l = n - 1; l >= 0; l--) {
+ x[l] = mat[l][n] / mat[l][l];
+ for (var m = l - 1; m >= 0; m--) {
+ mat[m][n] -= mat[m][l] * x[l];
+ }
+ }
+ return x;
+};
+
+
+/**
+ * Converts radians to to degrees.
+ *
+ * @param {number} angleInRadians Angle in radians.
+ * @return {number} Angle in degrees.
+ */
+ol.math.toDegrees = function(angleInRadians) {
+ return angleInRadians * 180 / Math.PI;
+};
+
+
+/**
+ * Converts degrees to radians.
+ *
+ * @param {number} angleInDegrees Angle in degrees.
+ * @return {number} Angle in radians.
+ */
+ol.math.toRadians = function(angleInDegrees) {
+ return angleInDegrees * Math.PI / 180;
+};
+
+/**
+ * Returns the modulo of a / b, depending on the sign of b.
+ *
+ * @param {number} a Dividend.
+ * @param {number} b Divisor.
+ * @return {number} Modulo.
+ */
+ol.math.modulo = function(a, b) {
+ var r = a % b;
+ return r * b < 0 ? r + b : r;
+};
+
+/**
+ * Calculates the linearly interpolated value of x between a and b.
+ *
+ * @param {number} a Number
+ * @param {number} b Number
+ * @param {number} x Value to be interpolated.
+ * @return {number} Interpolated value.
+ */
+ol.math.lerp = function(a, b, x) {
+ return a + x * (b - a);
+};
+
+goog.provide('ol.CenterConstraint');
+
+goog.require('ol.math');
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.CenterConstraintType} The constraint.
+ */
+ol.CenterConstraint.createExtent = function(extent) {
+ return (
+ /**
+ * @param {ol.Coordinate|undefined} center Center.
+ * @return {ol.Coordinate|undefined} Center.
+ */
+ function(center) {
+ if (center) {
+ return [
+ ol.math.clamp(center[0], extent[0], extent[2]),
+ ol.math.clamp(center[1], extent[1], extent[3])
+ ];
+ } else {
+ return undefined;
+ }
+ });
+};
+
+
+/**
+ * @param {ol.Coordinate|undefined} center Center.
+ * @return {ol.Coordinate|undefined} Center.
+ */
+ol.CenterConstraint.none = function(center) {
+ return center;
+};
+
+goog.provide('ol.Constraints');
+
+
+/**
+ * @constructor
+ * @param {ol.CenterConstraintType} centerConstraint Center constraint.
+ * @param {ol.ResolutionConstraintType} resolutionConstraint
+ * Resolution constraint.
+ * @param {ol.RotationConstraintType} rotationConstraint
+ * Rotation constraint.
+ */
+ol.Constraints = function(centerConstraint, resolutionConstraint, rotationConstraint) {
+
+ /**
+ * @type {ol.CenterConstraintType}
+ */
+ this.center = centerConstraint;
+
+ /**
+ * @type {ol.ResolutionConstraintType}
+ */
+ this.resolution = resolutionConstraint;
+
+ /**
+ * @type {ol.RotationConstraintType}
+ */
+ this.rotation = rotationConstraint;
+
+};
+
+goog.provide('ol.object');
+
+
+/**
+ * Polyfill for Object.assign(). Assigns enumerable and own properties from
+ * one or more source objects to a target object.
+ *
+ * @see https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
+ * @param {!Object} target The target object.
+ * @param {...Object} var_sources The source object(s).
+ * @return {!Object} The modified target object.
+ */
+ol.object.assign = (typeof Object.assign === 'function') ? Object.assign : function(target, var_sources) {
+ if (target === undefined || target === null) {
+ throw new TypeError('Cannot convert undefined or null to object');
+ }
+
+ var output = Object(target);
+ for (var i = 1, ii = arguments.length; i < ii; ++i) {
+ var source = arguments[i];
+ if (source !== undefined && source !== null) {
+ for (var key in source) {
+ if (source.hasOwnProperty(key)) {
+ output[key] = source[key];
+ }
+ }
+ }
+ }
+ return output;
+};
+
+
+/**
+ * Removes all properties from an object.
+ * @param {Object} object The object to clear.
+ */
+ol.object.clear = function(object) {
+ for (var property in object) {
+ delete object[property];
+ }
+};
+
+
+/**
+ * Get an array of property values from an object.
+ * @param {Object<K,V>} object The object from which to get the values.
+ * @return {!Array<V>} The property values.
+ * @template K,V
+ */
+ol.object.getValues = function(object) {
+ var values = [];
+ for (var property in object) {
+ values.push(object[property]);
+ }
+ return values;
+};
+
+
+/**
+ * Determine if an object has any properties.
+ * @param {Object} object The object to check.
+ * @return {boolean} The object is empty.
+ */
+ol.object.isEmpty = function(object) {
+ var property;
+ for (property in object) {
+ return false;
+ }
+ return !property;
+};
+
+goog.provide('ol.events');
+goog.provide('ol.events.EventType');
+goog.provide('ol.events.KeyCode');
+
+goog.require('ol.object');
+
+
+/**
+ * @enum {string}
+ * @const
+ */
+ol.events.EventType = {
+ /**
+ * Generic change event.
+ * @event ol.events.Event#change
+ * @api
+ */
+ CHANGE: 'change',
+
+ CLICK: 'click',
+ DBLCLICK: 'dblclick',
+ DRAGENTER: 'dragenter',
+ DRAGOVER: 'dragover',
+ DROP: 'drop',
+ ERROR: 'error',
+ KEYDOWN: 'keydown',
+ KEYPRESS: 'keypress',
+ LOAD: 'load',
+ MOUSEDOWN: 'mousedown',
+ MOUSEMOVE: 'mousemove',
+ MOUSEOUT: 'mouseout',
+ MOUSEUP: 'mouseup',
+ MOUSEWHEEL: 'mousewheel',
+ MSPOINTERDOWN: 'mspointerdown',
+ RESIZE: 'resize',
+ TOUCHSTART: 'touchstart',
+ TOUCHMOVE: 'touchmove',
+ TOUCHEND: 'touchend',
+ WHEEL: 'wheel'
+};
+
+
+/**
+ * @enum {number}
+ * @const
+ */
+ol.events.KeyCode = {
+ LEFT: 37,
+ UP: 38,
+ RIGHT: 39,
+ DOWN: 40
+};
+
+
+/**
+ * Property name on an event target for the listener map associated with the
+ * event target.
+ * @const {string}
+ * @private
+ */
+ol.events.LISTENER_MAP_PROP_ = 'olm_' + ((Math.random() * 1e4) | 0);
+
+
+/**
+ * @param {ol.EventsKey} listenerObj Listener object.
+ * @return {ol.EventsListenerFunctionType} Bound listener.
+ */
+ol.events.bindListener_ = function(listenerObj) {
+ var boundListener = function(evt) {
+ var listener = listenerObj.listener;
+ var bindTo = listenerObj.bindTo || listenerObj.target;
+ if (listenerObj.callOnce) {
+ ol.events.unlistenByKey(listenerObj);
+ }
+ return listener.call(bindTo, evt);
+ };
+ listenerObj.boundListener = boundListener;
+ return boundListener;
+};
+
+
+/**
+ * Finds the matching {@link ol.EventsKey} in the given listener
+ * array.
+ *
+ * @param {!Array<!ol.EventsKey>} listeners Array of listeners.
+ * @param {!Function} listener The listener function.
+ * @param {Object=} opt_this The `this` value inside the listener.
+ * @param {boolean=} opt_setDeleteIndex Set the deleteIndex on the matching
+ * listener, for {@link ol.events.unlistenByKey}.
+ * @return {ol.EventsKey|undefined} The matching listener object.
+ * @private
+ */
+ol.events.findListener_ = function(listeners, listener, opt_this,
+ opt_setDeleteIndex) {
+ var listenerObj;
+ for (var i = 0, ii = listeners.length; i < ii; ++i) {
+ listenerObj = listeners[i];
+ if (listenerObj.listener === listener &&
+ listenerObj.bindTo === opt_this) {
+ if (opt_setDeleteIndex) {
+ listenerObj.deleteIndex = i;
+ }
+ return listenerObj;
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {ol.EventTargetLike} target Target.
+ * @param {string} type Type.
+ * @return {Array.<ol.EventsKey>|undefined} Listeners.
+ */
+ol.events.getListeners = function(target, type) {
+ var listenerMap = target[ol.events.LISTENER_MAP_PROP_];
+ return listenerMap ? listenerMap[type] : undefined;
+};
+
+
+/**
+ * Get the lookup of listeners. If one does not exist on the target, it is
+ * created.
+ * @param {ol.EventTargetLike} target Target.
+ * @return {!Object.<string, Array.<ol.EventsKey>>} Map of
+ * listeners by event type.
+ * @private
+ */
+ol.events.getListenerMap_ = function(target) {
+ var listenerMap = target[ol.events.LISTENER_MAP_PROP_];
+ if (!listenerMap) {
+ listenerMap = target[ol.events.LISTENER_MAP_PROP_] = {};
+ }
+ return listenerMap;
+};
+
+
+/**
+ * Clean up all listener objects of the given type. All properties on the
+ * listener objects will be removed, and if no listeners remain in the listener
+ * map, it will be removed from the target.
+ * @param {ol.EventTargetLike} target Target.
+ * @param {string} type Type.
+ * @private
+ */
+ol.events.removeListeners_ = function(target, type) {
+ var listeners = ol.events.getListeners(target, type);
+ if (listeners) {
+ for (var i = 0, ii = listeners.length; i < ii; ++i) {
+ target.removeEventListener(type, listeners[i].boundListener);
+ ol.object.clear(listeners[i]);
+ }
+ listeners.length = 0;
+ var listenerMap = target[ol.events.LISTENER_MAP_PROP_];
+ if (listenerMap) {
+ delete listenerMap[type];
+ if (Object.keys(listenerMap).length === 0) {
+ delete target[ol.events.LISTENER_MAP_PROP_];
+ }
+ }
+ }
+};
+
+
+/**
+ * Registers an event listener on an event target. Inspired by
+ * {@link https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html}
+ *
+ * This function efficiently binds a `listener` to a `this` object, and returns
+ * a key for use with {@link ol.events.unlistenByKey}.
+ *
+ * @param {ol.EventTargetLike} target Event target.
+ * @param {string} type Event type.
+ * @param {ol.EventsListenerFunctionType} listener Listener.
+ * @param {Object=} opt_this Object referenced by the `this` keyword in the
+ * listener. Default is the `target`.
+ * @param {boolean=} opt_once If true, add the listener as one-off listener.
+ * @return {ol.EventsKey} Unique key for the listener.
+ */
+ol.events.listen = function(target, type, listener, opt_this, opt_once) {
+ var listenerMap = ol.events.getListenerMap_(target);
+ var listeners = listenerMap[type];
+ if (!listeners) {
+ listeners = listenerMap[type] = [];
+ }
+ var listenerObj = ol.events.findListener_(listeners, listener, opt_this,
+ false);
+ if (listenerObj) {
+ if (!opt_once) {
+ // Turn one-off listener into a permanent one.
+ listenerObj.callOnce = false;
+ }
+ } else {
+ listenerObj = /** @type {ol.EventsKey} */ ({
+ bindTo: opt_this,
+ callOnce: !!opt_once,
+ listener: listener,
+ target: target,
+ type: type
+ });
+ target.addEventListener(type, ol.events.bindListener_(listenerObj));
+ listeners.push(listenerObj);
+ }
+
+ return listenerObj;
+};
+
+
+/**
+ * Registers a one-off event listener on an event target. Inspired by
+ * {@link https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html}
+ *
+ * This function efficiently binds a `listener` as self-unregistering listener
+ * to a `this` object, and returns a key for use with
+ * {@link ol.events.unlistenByKey} in case the listener needs to be unregistered
+ * before it is called.
+ *
+ * When {@link ol.events.listen} is called with the same arguments after this
+ * function, the self-unregistering listener will be turned into a permanent
+ * listener.
+ *
+ * @param {ol.EventTargetLike} target Event target.
+ * @param {string} type Event type.
+ * @param {ol.EventsListenerFunctionType} listener Listener.
+ * @param {Object=} opt_this Object referenced by the `this` keyword in the
+ * listener. Default is the `target`.
+ * @return {ol.EventsKey} Key for unlistenByKey.
+ */
+ol.events.listenOnce = function(target, type, listener, opt_this) {
+ return ol.events.listen(target, type, listener, opt_this, true);
+};
+
+
+/**
+ * Unregisters an event listener on an event target. Inspired by
+ * {@link https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html}
+ *
+ * To return a listener, this function needs to be called with the exact same
+ * arguments that were used for a previous {@link ol.events.listen} call.
+ *
+ * @param {ol.EventTargetLike} target Event target.
+ * @param {string} type Event type.
+ * @param {ol.EventsListenerFunctionType} listener Listener.
+ * @param {Object=} opt_this Object referenced by the `this` keyword in the
+ * listener. Default is the `target`.
+ */
+ol.events.unlisten = function(target, type, listener, opt_this) {
+ var listeners = ol.events.getListeners(target, type);
+ if (listeners) {
+ var listenerObj = ol.events.findListener_(listeners, listener, opt_this,
+ true);
+ if (listenerObj) {
+ ol.events.unlistenByKey(listenerObj);
+ }
+ }
+};
+
+
+/**
+ * Unregisters event listeners on an event target. Inspired by
+ * {@link https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html}
+ *
+ * The argument passed to this function is the key returned from
+ * {@link ol.events.listen} or {@link ol.events.listenOnce}.
+ *
+ * @param {ol.EventsKey} key The key.
+ */
+ol.events.unlistenByKey = function(key) {
+ if (key && key.target) {
+ key.target.removeEventListener(key.type, key.boundListener);
+ var listeners = ol.events.getListeners(key.target, key.type);
+ if (listeners) {
+ var i = 'deleteIndex' in key ? key.deleteIndex : listeners.indexOf(key);
+ if (i !== -1) {
+ listeners.splice(i, 1);
+ }
+ if (listeners.length === 0) {
+ ol.events.removeListeners_(key.target, key.type);
+ }
+ }
+ ol.object.clear(key);
+ }
+};
+
+
+/**
+ * Unregisters all event listeners on an event target. Inspired by
+ * {@link https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html}
+ *
+ * @param {ol.EventTargetLike} target Target.
+ */
+ol.events.unlistenAll = function(target) {
+ var listenerMap = ol.events.getListenerMap_(target);
+ for (var type in listenerMap) {
+ ol.events.removeListeners_(target, type);
+ }
+};
+
+goog.provide('ol.Disposable');
+
+goog.require('ol');
+
+/**
+ * Objects that need to clean up after themselves.
+ * @constructor
+ */
+ol.Disposable = function() {};
+
+/**
+ * The object has already been disposed.
+ * @type {boolean}
+ * @private
+ */
+ol.Disposable.prototype.disposed_ = false;
+
+/**
+ * Clean up.
+ */
+ol.Disposable.prototype.dispose = function() {
+ if (!this.disposed_) {
+ this.disposed_ = true;
+ this.disposeInternal();
+ }
+};
+
+/**
+ * Extension point for disposable objects.
+ * @protected
+ */
+ol.Disposable.prototype.disposeInternal = ol.nullFunction;
+
+goog.provide('ol.events.Event');
+
+
+/**
+ * @classdesc
+ * Stripped down implementation of the W3C DOM Level 2 Event interface.
+ * @see {@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface}
+ *
+ * This implementation only provides `type` and `target` properties, and
+ * `stopPropagation` and `preventDefault` methods. It is meant as base class
+ * for higher level events defined in the library, and works with
+ * {@link ol.events.EventTarget}.
+ *
+ * @constructor
+ * @implements {oli.events.Event}
+ * @param {string} type Type.
+ * @param {Object=} opt_target Target.
+ */
+ol.events.Event = function(type, opt_target) {
+
+ /**
+ * @type {boolean}
+ */
+ this.propagationStopped;
+
+ /**
+ * The event type.
+ * @type {string}
+ * @api stable
+ */
+ this.type = type;
+
+ /**
+ * The event target.
+ * @type {Object}
+ * @api stable
+ */
+ this.target = opt_target || null;
+
+};
+
+
+/**
+ * Stop event propagation.
+ * @function
+ * @api stable
+ */
+ol.events.Event.prototype.preventDefault =
+
+/**
+ * Stop event propagation.
+ * @function
+ * @api stable
+ */
+ol.events.Event.prototype.stopPropagation = function() {
+ this.propagationStopped = true;
+};
+
+
+/**
+ * @param {Event|ol.events.Event} evt Event
+ */
+ol.events.Event.stopPropagation = function(evt) {
+ evt.stopPropagation();
+};
+
+
+/**
+ * @param {Event|ol.events.Event} evt Event
+ */
+ol.events.Event.preventDefault = function(evt) {
+ evt.preventDefault();
+};
+
+goog.provide('ol.events.EventTarget');
+
+goog.require('goog.asserts');
+goog.require('ol.Disposable');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+
+
+/**
+ * @classdesc
+ * A simplified implementation of the W3C DOM Level 2 EventTarget interface.
+ * @see {@link https://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-EventTarget}
+ *
+ * There are two important simplifications compared to the specification:
+ *
+ * 1. The handling of `useCapture` in `addEventListener` and
+ * `removeEventListener`. There is no real capture model.
+ * 2. The handling of `stopPropagation` and `preventDefault` on `dispatchEvent`.
+ * There is no event target hierarchy. When a listener calls
+ * `stopPropagation` or `preventDefault` on an event object, it means that no
+ * more listeners after this one will be called. Same as when the listener
+ * returns false.
+ *
+ * @constructor
+ * @extends {ol.Disposable}
+ */
+ol.events.EventTarget = function() {
+
+ ol.Disposable.call(this);
+
+ /**
+ * @private
+ * @type {!Object.<string, number>}
+ */
+ this.pendingRemovals_ = {};
+
+ /**
+ * @private
+ * @type {!Object.<string, number>}
+ */
+ this.dispatching_ = {};
+
+ /**
+ * @private
+ * @type {!Object.<string, Array.<ol.EventsListenerFunctionType>>}
+ */
+ this.listeners_ = {};
+
+};
+ol.inherits(ol.events.EventTarget, ol.Disposable);
+
+
+/**
+ * @param {string} type Type.
+ * @param {ol.EventsListenerFunctionType} listener Listener.
+ */
+ol.events.EventTarget.prototype.addEventListener = function(type, listener) {
+ var listeners = this.listeners_[type];
+ if (!listeners) {
+ listeners = this.listeners_[type] = [];
+ }
+ if (listeners.indexOf(listener) === -1) {
+ listeners.push(listener);
+ }
+};
+
+
+/**
+ * @param {{type: string,
+ * target: (EventTarget|ol.events.EventTarget|undefined)}|ol.events.Event|
+ * string} event Event or event type.
+ * @return {boolean|undefined} `false` if anyone called preventDefault on the
+ * event object or if any of the listeners returned false.
+ */
+ol.events.EventTarget.prototype.dispatchEvent = function(event) {
+ var evt = typeof event === 'string' ? new ol.events.Event(event) : event;
+ var type = evt.type;
+ evt.target = this;
+ var listeners = this.listeners_[type];
+ var propagate;
+ if (listeners) {
+ if (!(type in this.dispatching_)) {
+ this.dispatching_[type] = 0;
+ this.pendingRemovals_[type] = 0;
+ }
+ ++this.dispatching_[type];
+ for (var i = 0, ii = listeners.length; i < ii; ++i) {
+ if (listeners[i].call(this, evt) === false || evt.propagationStopped) {
+ propagate = false;
+ break;
+ }
+ }
+ --this.dispatching_[type];
+ if (this.dispatching_[type] === 0) {
+ var pendingRemovals = this.pendingRemovals_[type];
+ delete this.pendingRemovals_[type];
+ while (pendingRemovals--) {
+ this.removeEventListener(type, ol.nullFunction);
+ }
+ delete this.dispatching_[type];
+ }
+ return propagate;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.events.EventTarget.prototype.disposeInternal = function() {
+ ol.events.unlistenAll(this);
+};
+
+
+/**
+ * Get the listeners for a specified event type. Listeners are returned in the
+ * order that they will be called in.
+ *
+ * @param {string} type Type.
+ * @return {Array.<ol.EventsListenerFunctionType>} Listeners.
+ */
+ol.events.EventTarget.prototype.getListeners = function(type) {
+ return this.listeners_[type];
+};
+
+
+/**
+ * @param {string=} opt_type Type. If not provided,
+ * `true` will be returned if this EventTarget has any listeners.
+ * @return {boolean} Has listeners.
+ */
+ol.events.EventTarget.prototype.hasListener = function(opt_type) {
+ return opt_type ?
+ opt_type in this.listeners_ :
+ Object.keys(this.listeners_).length > 0;
+};
+
+
+/**
+ * @param {string} type Type.
+ * @param {ol.EventsListenerFunctionType} listener Listener.
+ */
+ol.events.EventTarget.prototype.removeEventListener = function(type, listener) {
+ var listeners = this.listeners_[type];
+ if (listeners) {
+ var index = listeners.indexOf(listener);
+ goog.asserts.assert(index != -1, 'listener not found');
+ if (type in this.pendingRemovals_) {
+ // make listener a no-op, and remove later in #dispatchEvent()
+ listeners[index] = ol.nullFunction;
+ ++this.pendingRemovals_[type];
+ } else {
+ listeners.splice(index, 1);
+ if (listeners.length === 0) {
+ delete this.listeners_[type];
+ }
+ }
+ }
+};
+
+goog.provide('ol.Observable');
+
+goog.require('ol.events');
+goog.require('ol.events.EventTarget');
+goog.require('ol.events.EventType');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * An event target providing convenient methods for listener registration
+ * and unregistration. A generic `change` event is always available through
+ * {@link ol.Observable#changed}.
+ *
+ * @constructor
+ * @extends {ol.events.EventTarget}
+ * @fires change
+ * @struct
+ * @api stable
+ */
+ol.Observable = function() {
+
+ ol.events.EventTarget.call(this);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.revision_ = 0;
+
+};
+ol.inherits(ol.Observable, ol.events.EventTarget);
+
+
+/**
+ * Removes an event listener using the key returned by `on()` or `once()`.
+ * @param {ol.EventsKey|Array.<ol.EventsKey>} key The key returned by `on()`
+ * or `once()` (or an array of keys).
+ * @api stable
+ */
+ol.Observable.unByKey = function(key) {
+ if (Array.isArray(key)) {
+ for (var i = 0, ii = key.length; i < ii; ++i) {
+ ol.events.unlistenByKey(key[i]);
+ }
+ } else {
+ ol.events.unlistenByKey(/** @type {ol.EventsKey} */ (key));
+ }
+};
+
+
+/**
+ * Increases the revision counter and dispatches a 'change' event.
+ * @api
+ */
+ol.Observable.prototype.changed = function() {
+ ++this.revision_;
+ this.dispatchEvent(ol.events.EventType.CHANGE);
+};
+
+
+/**
+ * Triggered when the revision counter is increased.
+ * @event change
+ * @api
+ */
+
+
+/**
+ * Dispatches an event and calls all listeners listening for events
+ * of this type. The event parameter can either be a string or an
+ * Object with a `type` property.
+ *
+ * @param {{type: string,
+ * target: (EventTarget|ol.events.EventTarget|undefined)}|ol.events.Event|
+ * string} event Event object.
+ * @function
+ * @api
+ */
+ol.Observable.prototype.dispatchEvent;
+
+
+/**
+ * Get the version number for this object. Each time the object is modified,
+ * its version number will be incremented.
+ * @return {number} Revision.
+ * @api
+ */
+ol.Observable.prototype.getRevision = function() {
+ return this.revision_;
+};
+
+
+/**
+ * Listen for a certain type of event.
+ * @param {string|Array.<string>} type The event type or array of event types.
+ * @param {function(?): ?} listener The listener function.
+ * @param {Object=} opt_this The object to use as `this` in `listener`.
+ * @return {ol.EventsKey|Array.<ol.EventsKey>} Unique key for the listener. If
+ * called with an array of event types as the first argument, the return
+ * will be an array of keys.
+ * @api stable
+ */
+ol.Observable.prototype.on = function(type, listener, opt_this) {
+ if (Array.isArray(type)) {
+ var len = type.length;
+ var keys = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ keys[i] = ol.events.listen(this, type[i], listener, opt_this);
+ }
+ return keys;
+ } else {
+ return ol.events.listen(
+ this, /** @type {string} */ (type), listener, opt_this);
+ }
+};
+
+
+/**
+ * Listen once for a certain type of event.
+ * @param {string|Array.<string>} type The event type or array of event types.
+ * @param {function(?): ?} listener The listener function.
+ * @param {Object=} opt_this The object to use as `this` in `listener`.
+ * @return {ol.EventsKey|Array.<ol.EventsKey>} Unique key for the listener. If
+ * called with an array of event types as the first argument, the return
+ * will be an array of keys.
+ * @api stable
+ */
+ol.Observable.prototype.once = function(type, listener, opt_this) {
+ if (Array.isArray(type)) {
+ var len = type.length;
+ var keys = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ keys[i] = ol.events.listenOnce(this, type[i], listener, opt_this);
+ }
+ return keys;
+ } else {
+ return ol.events.listenOnce(
+ this, /** @type {string} */ (type), listener, opt_this);
+ }
+};
+
+
+/**
+ * Unlisten for a certain type of event.
+ * @param {string|Array.<string>} type The event type or array of event types.
+ * @param {function(?): ?} listener The listener function.
+ * @param {Object=} opt_this The object which was used as `this` by the
+ * `listener`.
+ * @api stable
+ */
+ol.Observable.prototype.un = function(type, listener, opt_this) {
+ if (Array.isArray(type)) {
+ for (var i = 0, ii = type.length; i < ii; ++i) {
+ ol.events.unlisten(this, type[i], listener, opt_this);
+ }
+ return;
+ } else {
+ ol.events.unlisten(this, /** @type {string} */ (type), listener, opt_this);
+ }
+};
+
+
+/**
+ * Removes an event listener using the key returned by `on()` or `once()`.
+ * Note that using the {@link ol.Observable.unByKey} static function is to
+ * be preferred.
+ * @param {ol.EventsKey|Array.<ol.EventsKey>} key The key returned by `on()`
+ * or `once()` (or an array of keys).
+ * @function
+ * @api stable
+ */
+ol.Observable.prototype.unByKey = ol.Observable.unByKey;
+
+goog.provide('ol.Object');
+goog.provide('ol.ObjectEvent');
+goog.provide('ol.ObjectEventType');
+
+goog.require('ol.Observable');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.object');
+
+
+/**
+ * @enum {string}
+ */
+ol.ObjectEventType = {
+ /**
+ * Triggered when a property is changed.
+ * @event ol.ObjectEvent#propertychange
+ * @api stable
+ */
+ PROPERTYCHANGE: 'propertychange'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.Object} instances are instances of this type.
+ *
+ * @param {string} type The event type.
+ * @param {string} key The property name.
+ * @param {*} oldValue The old value for `key`.
+ * @extends {ol.events.Event}
+ * @implements {oli.ObjectEvent}
+ * @constructor
+ */
+ol.ObjectEvent = function(type, key, oldValue) {
+ ol.events.Event.call(this, type);
+
+ /**
+ * The name of the property whose value is changing.
+ * @type {string}
+ * @api stable
+ */
+ this.key = key;
+
+ /**
+ * The old value. To get the new value use `e.target.get(e.key)` where
+ * `e` is the event object.
+ * @type {*}
+ * @api stable
+ */
+ this.oldValue = oldValue;
+
+};
+ol.inherits(ol.ObjectEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Most non-trivial classes inherit from this.
+ *
+ * This extends {@link ol.Observable} with observable properties, where each
+ * property is observable as well as the object as a whole.
+ *
+ * Classes that inherit from this have pre-defined properties, to which you can
+ * add your owns. The pre-defined properties are listed in this documentation as
+ * 'Observable Properties', and have their own accessors; for example,
+ * {@link ol.Map} has a `target` property, accessed with `getTarget()` and
+ * changed with `setTarget()`. Not all properties are however settable. There
+ * are also general-purpose accessors `get()` and `set()`. For example,
+ * `get('target')` is equivalent to `getTarget()`.
+ *
+ * The `set` accessors trigger a change event, and you can monitor this by
+ * registering a listener. For example, {@link ol.View} has a `center`
+ * property, so `view.on('change:center', function(evt) {...});` would call the
+ * function whenever the value of the center property changes. Within the
+ * function, `evt.target` would be the view, so `evt.target.getCenter()` would
+ * return the new center.
+ *
+ * You can add your own observable properties with
+ * `object.set('prop', 'value')`, and retrieve that with `object.get('prop')`.
+ * You can listen for changes on that property value with
+ * `object.on('change:prop', listener)`. You can get a list of all
+ * properties with {@link ol.Object#getProperties object.getProperties()}.
+ *
+ * Note that the observable properties are separate from standard JS properties.
+ * You can, for example, give your map object a title with
+ * `map.title='New title'` and with `map.set('title', 'Another title')`. The
+ * first will be a `hasOwnProperty`; the second will appear in
+ * `getProperties()`. Only the second is observable.
+ *
+ * Properties can be deleted by using the unset method. E.g.
+ * object.unset('foo').
+ *
+ * @constructor
+ * @extends {ol.Observable}
+ * @param {Object.<string, *>=} opt_values An object with key-value pairs.
+ * @fires ol.ObjectEvent
+ * @api
+ */
+ol.Object = function(opt_values) {
+ ol.Observable.call(this);
+
+ // Call goog.getUid to ensure that the order of objects' ids is the same as
+ // the order in which they were created. This also helps to ensure that
+ // object properties are always added in the same order, which helps many
+ // JavaScript engines generate faster code.
+ goog.getUid(this);
+
+ /**
+ * @private
+ * @type {!Object.<string, *>}
+ */
+ this.values_ = {};
+
+ if (opt_values !== undefined) {
+ this.setProperties(opt_values);
+ }
+};
+ol.inherits(ol.Object, ol.Observable);
+
+
+/**
+ * @private
+ * @type {Object.<string, string>}
+ */
+ol.Object.changeEventTypeCache_ = {};
+
+
+/**
+ * @param {string} key Key name.
+ * @return {string} Change name.
+ */
+ol.Object.getChangeEventType = function(key) {
+ return ol.Object.changeEventTypeCache_.hasOwnProperty(key) ?
+ ol.Object.changeEventTypeCache_[key] :
+ (ol.Object.changeEventTypeCache_[key] = 'change:' + key);
+};
+
+
+/**
+ * Gets a value.
+ * @param {string} key Key name.
+ * @return {*} Value.
+ * @api stable
+ */
+ol.Object.prototype.get = function(key) {
+ var value;
+ if (this.values_.hasOwnProperty(key)) {
+ value = this.values_[key];
+ }
+ return value;
+};
+
+
+/**
+ * Get a list of object property names.
+ * @return {Array.<string>} List of property names.
+ * @api stable
+ */
+ol.Object.prototype.getKeys = function() {
+ return Object.keys(this.values_);
+};
+
+
+/**
+ * Get an object of all property names and values.
+ * @return {Object.<string, *>} Object.
+ * @api stable
+ */
+ol.Object.prototype.getProperties = function() {
+ return ol.object.assign({}, this.values_);
+};
+
+
+/**
+ * @param {string} key Key name.
+ * @param {*} oldValue Old value.
+ */
+ol.Object.prototype.notify = function(key, oldValue) {
+ var eventType;
+ eventType = ol.Object.getChangeEventType(key);
+ this.dispatchEvent(new ol.ObjectEvent(eventType, key, oldValue));
+ eventType = ol.ObjectEventType.PROPERTYCHANGE;
+ this.dispatchEvent(new ol.ObjectEvent(eventType, key, oldValue));
+};
+
+
+/**
+ * Sets a value.
+ * @param {string} key Key name.
+ * @param {*} value Value.
+ * @param {boolean=} opt_silent Update without triggering an event.
+ * @api stable
+ */
+ol.Object.prototype.set = function(key, value, opt_silent) {
+ if (opt_silent) {
+ this.values_[key] = value;
+ } else {
+ var oldValue = this.values_[key];
+ this.values_[key] = value;
+ if (oldValue !== value) {
+ this.notify(key, oldValue);
+ }
+ }
+};
+
+
+/**
+ * Sets a collection of key-value pairs. Note that this changes any existing
+ * properties and adds new ones (it does not remove any existing properties).
+ * @param {Object.<string, *>} values Values.
+ * @param {boolean=} opt_silent Update without triggering an event.
+ * @api stable
+ */
+ol.Object.prototype.setProperties = function(values, opt_silent) {
+ var key;
+ for (key in values) {
+ this.set(key, values[key], opt_silent);
+ }
+};
+
+
+/**
+ * Unsets a property.
+ * @param {string} key Key name.
+ * @param {boolean=} opt_silent Unset without triggering an event.
+ * @api stable
+ */
+ol.Object.prototype.unset = function(key, opt_silent) {
+ if (key in this.values_) {
+ var oldValue = this.values_[key];
+ delete this.values_[key];
+ if (!opt_silent) {
+ this.notify(key, oldValue);
+ }
+ }
+};
+
+goog.provide('ol.array');
+
+goog.require('goog.asserts');
+
+
+/**
+ * Performs a binary search on the provided sorted list and returns the index of the item if found. If it can't be found it'll return -1.
+ * https://github.com/darkskyapp/binary-search
+ *
+ * @param {Array.<*>} haystack Items to search through.
+ * @param {*} needle The item to look for.
+ * @param {Function=} opt_comparator Comparator function.
+ * @return {number} The index of the item if found, -1 if not.
+ */
+ol.array.binarySearch = function(haystack, needle, opt_comparator) {
+ var mid, cmp;
+ var comparator = opt_comparator || ol.array.numberSafeCompareFunction;
+ var low = 0;
+ var high = haystack.length;
+ var found = false;
+
+ while (low < high) {
+ /* Note that "(low + high) >>> 1" may overflow, and results in a typecast
+ * to double (which gives the wrong results). */
+ mid = low + (high - low >> 1);
+ cmp = +comparator(haystack[mid], needle);
+
+ if (cmp < 0.0) { /* Too low. */
+ low = mid + 1;
+
+ } else { /* Key found or too high */
+ high = mid;
+ found = !cmp;
+ }
+ }
+
+ /* Key not found. */
+ return found ? low : ~low;
+};
+
+/**
+ * @param {Array.<number>} arr Array.
+ * @param {number} target Target.
+ * @return {number} Index.
+ */
+ol.array.binaryFindNearest = function(arr, target) {
+ var index = ol.array.binarySearch(arr, target,
+ /**
+ * @param {number} a A.
+ * @param {number} b B.
+ * @return {number} b minus a.
+ */
+ function(a, b) {
+ return b - a;
+ });
+ if (index >= 0) {
+ return index;
+ } else if (index == -1) {
+ return 0;
+ } else if (index == -arr.length - 1) {
+ return arr.length - 1;
+ } else {
+ var left = -index - 2;
+ var right = -index - 1;
+ if (arr[left] - target < target - arr[right]) {
+ return left;
+ } else {
+ return right;
+ }
+ }
+};
+
+
+/**
+ * Compare function for array sort that is safe for numbers.
+ * @param {*} a The first object to be compared.
+ * @param {*} b The second object to be compared.
+ * @return {number} A negative number, zero, or a positive number as the first
+ * argument is less than, equal to, or greater than the second.
+ */
+ol.array.numberSafeCompareFunction = function(a, b) {
+ return a > b ? 1 : a < b ? -1 : 0;
+};
+
+
+/**
+ * Whether the array contains the given object.
+ * @param {Array.<*>} arr The array to test for the presence of the element.
+ * @param {*} obj The object for which to test.
+ * @return {boolean} The object is in the array.
+ */
+ol.array.includes = function(arr, obj) {
+ return arr.indexOf(obj) >= 0;
+};
+
+
+/**
+ * @param {Array.<number>} arr Array.
+ * @param {number} target Target.
+ * @param {number} direction 0 means return the nearest, > 0
+ * means return the largest nearest, < 0 means return the
+ * smallest nearest.
+ * @return {number} Index.
+ */
+ol.array.linearFindNearest = function(arr, target, direction) {
+ var n = arr.length;
+ if (arr[0] <= target) {
+ return 0;
+ } else if (target <= arr[n - 1]) {
+ return n - 1;
+ } else {
+ var i;
+ if (direction > 0) {
+ for (i = 1; i < n; ++i) {
+ if (arr[i] < target) {
+ return i - 1;
+ }
+ }
+ } else if (direction < 0) {
+ for (i = 1; i < n; ++i) {
+ if (arr[i] <= target) {
+ return i;
+ }
+ }
+ } else {
+ for (i = 1; i < n; ++i) {
+ if (arr[i] == target) {
+ return i;
+ } else if (arr[i] < target) {
+ if (arr[i - 1] - target < target - arr[i]) {
+ return i - 1;
+ } else {
+ return i;
+ }
+ }
+ }
+ }
+ // We should never get here, but the compiler complains
+ // if it finds a path for which no number is returned.
+ goog.asserts.fail();
+ return n - 1;
+ }
+};
+
+
+/**
+ * @param {Array.<*>} arr Array.
+ * @param {number} begin Begin index.
+ * @param {number} end End index.
+ */
+ol.array.reverseSubArray = function(arr, begin, end) {
+ goog.asserts.assert(begin >= 0,
+ 'Array begin index should be equal to or greater than 0');
+ goog.asserts.assert(end < arr.length,
+ 'Array end index should be less than the array length');
+ while (begin < end) {
+ var tmp = arr[begin];
+ arr[begin] = arr[end];
+ arr[end] = tmp;
+ ++begin;
+ --end;
+ }
+};
+
+
+/**
+ * @param {Array.<*>} arr Array.
+ * @return {!Array.<?>} Flattened Array.
+ */
+ol.array.flatten = function(arr) {
+ var data = arr.reduce(function(flattened, value) {
+ if (Array.isArray(value)) {
+ return flattened.concat(ol.array.flatten(value));
+ } else {
+ return flattened.concat(value);
+ }
+ }, []);
+ return data;
+};
+
+
+/**
+ * @param {Array.<VALUE>} arr The array to modify.
+ * @param {Array.<VALUE>|VALUE} data The elements or arrays of elements
+ * to add to arr.
+ * @template VALUE
+ */
+ol.array.extend = function(arr, data) {
+ var i;
+ var extension = goog.isArrayLike(data) ? data : [data];
+ var length = extension.length;
+ for (i = 0; i < length; i++) {
+ arr[arr.length] = extension[i];
+ }
+};
+
+
+/**
+ * @param {Array.<VALUE>} arr The array to modify.
+ * @param {VALUE} obj The element to remove.
+ * @template VALUE
+ * @return {boolean} If the element was removed.
+ */
+ol.array.remove = function(arr, obj) {
+ var i = arr.indexOf(obj);
+ var found = i > -1;
+ if (found) {
+ arr.splice(i, 1);
+ }
+ return found;
+};
+
+
+/**
+ * @param {Array.<VALUE>} arr The array to search in.
+ * @param {function(VALUE, number, ?) : boolean} func The function to compare.
+ * @template VALUE
+ * @return {VALUE} The element found.
+ */
+ol.array.find = function(arr, func) {
+ var length = arr.length >>> 0;
+ var value;
+
+ for (var i = 0; i < length; i++) {
+ value = arr[i];
+ if (func(value, i, arr)) {
+ return value;
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @param {Array|Uint8ClampedArray} arr1 The first array to compare.
+ * @param {Array|Uint8ClampedArray} arr2 The second array to compare.
+ * @return {boolean} Whether the two arrays are equal.
+ */
+ol.array.equals = function(arr1, arr2) {
+ var len1 = arr1.length;
+ if (len1 !== arr2.length) {
+ return false;
+ }
+ for (var i = 0; i < len1; i++) {
+ if (arr1[i] !== arr2[i]) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * @param {Array.<*>} arr The array to sort (modifies original).
+ * @param {Function} compareFnc Comparison function.
+ */
+ol.array.stableSort = function(arr, compareFnc) {
+ var length = arr.length;
+ var tmp = Array(arr.length);
+ var i;
+ for (i = 0; i < length; i++) {
+ tmp[i] = {index: i, value: arr[i]};
+ }
+ tmp.sort(function(a, b) {
+ return compareFnc(a.value, b.value) || a.index - b.index;
+ });
+ for (i = 0; i < arr.length; i++) {
+ arr[i] = tmp[i].value;
+ }
+};
+
+
+/**
+ * @param {Array.<*>} arr The array to search in.
+ * @param {Function} func Comparison function.
+ * @return {number} Return index.
+ */
+ol.array.findIndex = function(arr, func) {
+ var index;
+ var found = !arr.every(function(el, idx) {
+ index = idx;
+ return !func(el, idx, arr);
+ });
+ return found ? index : -1;
+};
+
+
+/**
+ * @param {Array.<*>} arr The array to test.
+ * @param {Function=} opt_func Comparison function.
+ * @param {boolean=} opt_strict Strictly sorted (default false).
+ * @return {boolean} Return index.
+ */
+ol.array.isSorted = function(arr, opt_func, opt_strict) {
+ var compare = opt_func || ol.array.numberSafeCompareFunction;
+ return arr.every(function(currentVal, index) {
+ if (index === 0) {
+ return true;
+ }
+ var res = compare(arr[index - 1], currentVal);
+ return !(res > 0 || opt_strict && res === 0);
+ });
+};
+
+goog.provide('ol.ResolutionConstraint');
+
+goog.require('ol.array');
+goog.require('ol.math');
+
+
+/**
+ * @param {Array.<number>} resolutions Resolutions.
+ * @return {ol.ResolutionConstraintType} Zoom function.
+ */
+ol.ResolutionConstraint.createSnapToResolutions = function(resolutions) {
+ return (
+ /**
+ * @param {number|undefined} resolution Resolution.
+ * @param {number} delta Delta.
+ * @param {number} direction Direction.
+ * @return {number|undefined} Resolution.
+ */
+ function(resolution, delta, direction) {
+ if (resolution !== undefined) {
+ var z =
+ ol.array.linearFindNearest(resolutions, resolution, direction);
+ z = ol.math.clamp(z + delta, 0, resolutions.length - 1);
+ return resolutions[z];
+ } else {
+ return undefined;
+ }
+ });
+};
+
+
+/**
+ * @param {number} power Power.
+ * @param {number} maxResolution Maximum resolution.
+ * @param {number=} opt_maxLevel Maximum level.
+ * @return {ol.ResolutionConstraintType} Zoom function.
+ */
+ol.ResolutionConstraint.createSnapToPower = function(power, maxResolution, opt_maxLevel) {
+ return (
+ /**
+ * @param {number|undefined} resolution Resolution.
+ * @param {number} delta Delta.
+ * @param {number} direction Direction.
+ * @return {number|undefined} Resolution.
+ */
+ function(resolution, delta, direction) {
+ if (resolution !== undefined) {
+ var offset;
+ if (direction > 0) {
+ offset = 0;
+ } else if (direction < 0) {
+ offset = 1;
+ } else {
+ offset = 0.5;
+ }
+ var oldLevel = Math.floor(
+ Math.log(maxResolution / resolution) / Math.log(power) + offset);
+ var newLevel = Math.max(oldLevel + delta, 0);
+ if (opt_maxLevel !== undefined) {
+ newLevel = Math.min(newLevel, opt_maxLevel);
+ }
+ return maxResolution / Math.pow(power, newLevel);
+ } else {
+ return undefined;
+ }
+ });
+};
+
+goog.provide('ol.RotationConstraint');
+
+goog.require('ol.math');
+
+
+/**
+ * @param {number|undefined} rotation Rotation.
+ * @param {number} delta Delta.
+ * @return {number|undefined} Rotation.
+ */
+ol.RotationConstraint.disable = function(rotation, delta) {
+ if (rotation !== undefined) {
+ return 0;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {number|undefined} rotation Rotation.
+ * @param {number} delta Delta.
+ * @return {number|undefined} Rotation.
+ */
+ol.RotationConstraint.none = function(rotation, delta) {
+ if (rotation !== undefined) {
+ return rotation + delta;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {number} n N.
+ * @return {ol.RotationConstraintType} Rotation constraint.
+ */
+ol.RotationConstraint.createSnapToN = function(n) {
+ var theta = 2 * Math.PI / n;
+ return (
+ /**
+ * @param {number|undefined} rotation Rotation.
+ * @param {number} delta Delta.
+ * @return {number|undefined} Rotation.
+ */
+ function(rotation, delta) {
+ if (rotation !== undefined) {
+ rotation = Math.floor((rotation + delta) / theta + 0.5) * theta;
+ return rotation;
+ } else {
+ return undefined;
+ }
+ });
+};
+
+
+/**
+ * @param {number=} opt_tolerance Tolerance.
+ * @return {ol.RotationConstraintType} Rotation constraint.
+ */
+ol.RotationConstraint.createSnapToZero = function(opt_tolerance) {
+ var tolerance = opt_tolerance || ol.math.toRadians(5);
+ return (
+ /**
+ * @param {number|undefined} rotation Rotation.
+ * @param {number} delta Delta.
+ * @return {number|undefined} Rotation.
+ */
+ function(rotation, delta) {
+ if (rotation !== undefined) {
+ if (Math.abs(rotation + delta) <= tolerance) {
+ return 0;
+ } else {
+ return rotation + delta;
+ }
+ } else {
+ return undefined;
+ }
+ });
+};
+
+goog.provide('ol.string');
+
+/**
+ * @param {number} number Number to be formatted
+ * @param {number} width The desired width
+ * @param {number=} opt_precision Precision of the output string (i.e. number of decimal places)
+ * @returns {string} Formatted string
+*/
+ol.string.padNumber = function(number, width, opt_precision) {
+ var numberString = opt_precision !== undefined ? number.toFixed(opt_precision) : '' + number;
+ var decimal = numberString.indexOf('.');
+ decimal = decimal === -1 ? numberString.length : decimal;
+ return decimal > width ? numberString : new Array(1 + width - decimal).join('0') + numberString;
+};
+
+/**
+ * Adapted from https://github.com/omichelsen/compare-versions/blob/master/index.js
+ * @param {string|number} v1 First version
+ * @param {string|number} v2 Second version
+ * @returns {number} Value
+ */
+ol.string.compareVersions = function(v1, v2) {
+ var s1 = ('' + v1).split('.');
+ var s2 = ('' + v2).split('.');
+
+ for (var i = 0; i < Math.max(s1.length, s2.length); i++) {
+ var n1 = parseInt(s1[i] || '0', 10);
+ var n2 = parseInt(s2[i] || '0', 10);
+
+ if (n1 > n2) return 1;
+ if (n2 > n1) return -1;
+ }
+
+ return 0;
+};
+
+goog.provide('ol.coordinate');
+
+goog.require('ol.math');
+goog.require('ol.string');
+
+
+/**
+ * Add `delta` to `coordinate`. `coordinate` is modified in place and returned
+ * by the function.
+ *
+ * Example:
+ *
+ * var coord = [7.85, 47.983333];
+ * ol.coordinate.add(coord, [-2, 4]);
+ * // coord is now [5.85, 51.983333]
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.Coordinate} delta Delta.
+ * @return {ol.Coordinate} The input coordinate adjusted by the given delta.
+ * @api stable
+ */
+ol.coordinate.add = function(coordinate, delta) {
+ coordinate[0] += delta[0];
+ coordinate[1] += delta[1];
+ return coordinate;
+};
+
+
+/**
+ * Calculates the point closest to the passed coordinate on the passed segment.
+ * This is the foot of the perpendicular of the coordinate to the segment when
+ * the foot is on the segment, or the closest segment coordinate when the foot
+ * is outside the segment.
+ *
+ * @param {ol.Coordinate} coordinate The coordinate.
+ * @param {Array.<ol.Coordinate>} segment The two coordinates of the segment.
+ * @return {ol.Coordinate} The foot of the perpendicular of the coordinate to
+ * the segment.
+ */
+ol.coordinate.closestOnSegment = function(coordinate, segment) {
+ var x0 = coordinate[0];
+ var y0 = coordinate[1];
+ var start = segment[0];
+ var end = segment[1];
+ var x1 = start[0];
+ var y1 = start[1];
+ var x2 = end[0];
+ var y2 = end[1];
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+ var along = (dx === 0 && dy === 0) ? 0 :
+ ((dx * (x0 - x1)) + (dy * (y0 - y1))) / ((dx * dx + dy * dy) || 0);
+ var x, y;
+ if (along <= 0) {
+ x = x1;
+ y = y1;
+ } else if (along >= 1) {
+ x = x2;
+ y = y2;
+ } else {
+ x = x1 + along * dx;
+ y = y1 + along * dy;
+ }
+ return [x, y];
+};
+
+
+/**
+ * Returns a {@link ol.CoordinateFormatType} function that can be used to format
+ * a {ol.Coordinate} to a string.
+ *
+ * Example without specifying the fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var stringifyFunc = ol.coordinate.createStringXY();
+ * var out = stringifyFunc(coord);
+ * // out is now '8, 48'
+ *
+ * Example with explicitly specifying 2 fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var stringifyFunc = ol.coordinate.createStringXY(2);
+ * var out = stringifyFunc(coord);
+ * // out is now '7.85, 47.98'
+ *
+ * @param {number=} opt_fractionDigits The number of digits to include
+ * after the decimal point. Default is `0`.
+ * @return {ol.CoordinateFormatType} Coordinate format.
+ * @api stable
+ */
+ol.coordinate.createStringXY = function(opt_fractionDigits) {
+ return (
+ /**
+ * @param {ol.Coordinate|undefined} coordinate Coordinate.
+ * @return {string} String XY.
+ */
+ function(coordinate) {
+ return ol.coordinate.toStringXY(coordinate, opt_fractionDigits);
+ });
+};
+
+
+/**
+ * @private
+ * @param {number} degrees Degrees.
+ * @param {string} hemispheres Hemispheres.
+ * @param {number=} opt_fractionDigits The number of digits to include
+ * after the decimal point. Default is `0`.
+ * @return {string} String.
+ */
+ol.coordinate.degreesToStringHDMS_ = function(degrees, hemispheres, opt_fractionDigits) {
+ var normalizedDegrees = ol.math.modulo(degrees + 180, 360) - 180;
+ var x = Math.abs(3600 * normalizedDegrees);
+ var dflPrecision = opt_fractionDigits || 0;
+ return Math.floor(x / 3600) + '\u00b0 ' +
+ ol.string.padNumber(Math.floor((x / 60) % 60), 2) + '\u2032 ' +
+ ol.string.padNumber((x % 60), 2, dflPrecision) + '\u2033 ' +
+ hemispheres.charAt(normalizedDegrees < 0 ? 1 : 0);
+};
+
+
+/**
+ * Transforms the given {@link ol.Coordinate} to a string using the given string
+ * template. The strings `{x}` and `{y}` in the template will be replaced with
+ * the first and second coordinate values respectively.
+ *
+ * Example without specifying the fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var template = 'Coordinate is ({x}|{y}).';
+ * var out = ol.coordinate.format(coord, template);
+ * // out is now 'Coordinate is (8|48).'
+ *
+ * Example explicitly specifying the fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var template = 'Coordinate is ({x}|{y}).';
+ * var out = ol.coordinate.format(coord, template, 2);
+ * // out is now 'Coordinate is (7.85|47.98).'
+ *
+ * @param {ol.Coordinate|undefined} coordinate Coordinate.
+ * @param {string} template A template string with `{x}` and `{y}` placeholders
+ * that will be replaced by first and second coordinate values.
+ * @param {number=} opt_fractionDigits The number of digits to include
+ * after the decimal point. Default is `0`.
+ * @return {string} Formatted coordinate.
+ * @api stable
+ */
+ol.coordinate.format = function(coordinate, template, opt_fractionDigits) {
+ if (coordinate) {
+ return template
+ .replace('{x}', coordinate[0].toFixed(opt_fractionDigits))
+ .replace('{y}', coordinate[1].toFixed(opt_fractionDigits));
+ } else {
+ return '';
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate1 First coordinate.
+ * @param {ol.Coordinate} coordinate2 Second coordinate.
+ * @return {boolean} Whether the passed coordinates are equal.
+ */
+ol.coordinate.equals = function(coordinate1, coordinate2) {
+ var equals = true;
+ for (var i = coordinate1.length - 1; i >= 0; --i) {
+ if (coordinate1[i] != coordinate2[i]) {
+ equals = false;
+ break;
+ }
+ }
+ return equals;
+};
+
+
+/**
+ * Rotate `coordinate` by `angle`. `coordinate` is modified in place and
+ * returned by the function.
+ *
+ * Example:
+ *
+ * var coord = [7.85, 47.983333];
+ * var rotateRadians = Math.PI / 2; // 90 degrees
+ * ol.coordinate.rotate(coord, rotateRadians);
+ * // coord is now [-47.983333, 7.85]
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} angle Angle in radian.
+ * @return {ol.Coordinate} Coordinate.
+ * @api stable
+ */
+ol.coordinate.rotate = function(coordinate, angle) {
+ var cosAngle = Math.cos(angle);
+ var sinAngle = Math.sin(angle);
+ var x = coordinate[0] * cosAngle - coordinate[1] * sinAngle;
+ var y = coordinate[1] * cosAngle + coordinate[0] * sinAngle;
+ coordinate[0] = x;
+ coordinate[1] = y;
+ return coordinate;
+};
+
+
+/**
+ * Scale `coordinate` by `scale`. `coordinate` is modified in place and returned
+ * by the function.
+ *
+ * Example:
+ *
+ * var coord = [7.85, 47.983333];
+ * var scale = 1.2;
+ * ol.coordinate.scale(coord, scale);
+ * // coord is now [9.42, 57.5799996]
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} scale Scale factor.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ol.coordinate.scale = function(coordinate, scale) {
+ coordinate[0] *= scale;
+ coordinate[1] *= scale;
+ return coordinate;
+};
+
+
+/**
+ * Subtract `delta` to `coordinate`. `coordinate` is modified in place and
+ * returned by the function.
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.Coordinate} delta Delta.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ol.coordinate.sub = function(coordinate, delta) {
+ coordinate[0] -= delta[0];
+ coordinate[1] -= delta[1];
+ return coordinate;
+};
+
+
+/**
+ * @param {ol.Coordinate} coord1 First coordinate.
+ * @param {ol.Coordinate} coord2 Second coordinate.
+ * @return {number} Squared distance between coord1 and coord2.
+ */
+ol.coordinate.squaredDistance = function(coord1, coord2) {
+ var dx = coord1[0] - coord2[0];
+ var dy = coord1[1] - coord2[1];
+ return dx * dx + dy * dy;
+};
+
+
+/**
+ * Calculate the squared distance from a coordinate to a line segment.
+ *
+ * @param {ol.Coordinate} coordinate Coordinate of the point.
+ * @param {Array.<ol.Coordinate>} segment Line segment (2 coordinates).
+ * @return {number} Squared distance from the point to the line segment.
+ */
+ol.coordinate.squaredDistanceToSegment = function(coordinate, segment) {
+ return ol.coordinate.squaredDistance(coordinate,
+ ol.coordinate.closestOnSegment(coordinate, segment));
+};
+
+
+/**
+ * Format a geographic coordinate with the hemisphere, degrees, minutes, and
+ * seconds.
+ *
+ * Example without specifying fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var out = ol.coordinate.toStringHDMS(coord);
+ * // out is now '47° 58′ 60″ N 7° 50′ 60″ E'
+ *
+ * Example explicitly specifying 1 fractional digit:
+ *
+ * var coord = [7.85, 47.983333];
+ * var out = ol.coordinate.toStringHDMS(coord, 1);
+ * // out is now '47° 58′ 60.0″ N 7° 50′ 60.0″ E'
+ *
+ * @param {ol.Coordinate|undefined} coordinate Coordinate.
+ * @param {number=} opt_fractionDigits The number of digits to include
+ * after the decimal point. Default is `0`.
+ * @return {string} Hemisphere, degrees, minutes and seconds.
+ * @api stable
+ */
+ol.coordinate.toStringHDMS = function(coordinate, opt_fractionDigits) {
+ if (coordinate) {
+ return ol.coordinate.degreesToStringHDMS_(coordinate[1], 'NS', opt_fractionDigits) + ' ' +
+ ol.coordinate.degreesToStringHDMS_(coordinate[0], 'EW', opt_fractionDigits);
+ } else {
+ return '';
+ }
+};
+
+
+/**
+ * Format a coordinate as a comma delimited string.
+ *
+ * Example without specifying fractional digits:
+ *
+ * var coord = [7.85, 47.983333];
+ * var out = ol.coordinate.toStringXY(coord);
+ * // out is now '8, 48'
+ *
+ * Example explicitly specifying 1 fractional digit:
+ *
+ * var coord = [7.85, 47.983333];
+ * var out = ol.coordinate.toStringXY(coord, 1);
+ * // out is now '7.8, 48.0'
+ *
+ * @param {ol.Coordinate|undefined} coordinate Coordinate.
+ * @param {number=} opt_fractionDigits The number of digits to include
+ * after the decimal point. Default is `0`.
+ * @return {string} XY.
+ * @api stable
+ */
+ol.coordinate.toStringXY = function(coordinate, opt_fractionDigits) {
+ return ol.coordinate.format(coordinate, '{x}, {y}', opt_fractionDigits);
+};
+
+
+/**
+ * Create an ol.Coordinate from an Array and take into account axis order.
+ *
+ * Examples:
+ *
+ * var northCoord = ol.coordinate.fromProjectedArray([1, 2], 'n');
+ * // northCoord is now [2, 1]
+ *
+ * var eastCoord = ol.coordinate.fromProjectedArray([1, 2], 'e');
+ * // eastCoord is now [1, 2]
+ *
+ * @param {Array} array The array with coordinates.
+ * @param {string} axis the axis info.
+ * @return {ol.Coordinate} The coordinate created.
+ */
+ol.coordinate.fromProjectedArray = function(array, axis) {
+ var firstAxis = axis.charAt(0);
+ if (firstAxis === 'n' || firstAxis === 's') {
+ return [array[1], array[0]];
+ } else {
+ return array;
+ }
+};
+
+goog.provide('ol.extent');
+goog.provide('ol.extent.Corner');
+goog.provide('ol.extent.Relationship');
+
+goog.require('goog.asserts');
+
+
+/**
+ * Extent corner.
+ * @enum {string}
+ */
+ol.extent.Corner = {
+ BOTTOM_LEFT: 'bottom-left',
+ BOTTOM_RIGHT: 'bottom-right',
+ TOP_LEFT: 'top-left',
+ TOP_RIGHT: 'top-right'
+};
+
+
+/**
+ * Relationship to an extent.
+ * @enum {number}
+ */
+ol.extent.Relationship = {
+ UNKNOWN: 0,
+ INTERSECTING: 1,
+ ABOVE: 2,
+ RIGHT: 4,
+ BELOW: 8,
+ LEFT: 16
+};
+
+
+/**
+ * Build an extent that includes all given coordinates.
+ *
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @return {ol.Extent} Bounding extent.
+ * @api stable
+ */
+ol.extent.boundingExtent = function(coordinates) {
+ var extent = ol.extent.createEmpty();
+ for (var i = 0, ii = coordinates.length; i < ii; ++i) {
+ ol.extent.extendCoordinate(extent, coordinates[i]);
+ }
+ return extent;
+};
+
+
+/**
+ * @param {Array.<number>} xs Xs.
+ * @param {Array.<number>} ys Ys.
+ * @param {ol.Extent=} opt_extent Destination extent.
+ * @private
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.boundingExtentXYs_ = function(xs, ys, opt_extent) {
+ goog.asserts.assert(xs.length > 0, 'xs length should be larger than 0');
+ goog.asserts.assert(ys.length > 0, 'ys length should be larger than 0');
+ var minX = Math.min.apply(null, xs);
+ var minY = Math.min.apply(null, ys);
+ var maxX = Math.max.apply(null, xs);
+ var maxY = Math.max.apply(null, ys);
+ return ol.extent.createOrUpdate(minX, minY, maxX, maxY, opt_extent);
+};
+
+
+/**
+ * Return extent increased by the provided value.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} value The amount by which the extent should be buffered.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ * @api stable
+ */
+ol.extent.buffer = function(extent, value, opt_extent) {
+ if (opt_extent) {
+ opt_extent[0] = extent[0] - value;
+ opt_extent[1] = extent[1] - value;
+ opt_extent[2] = extent[2] + value;
+ opt_extent[3] = extent[3] + value;
+ return opt_extent;
+ } else {
+ return [
+ extent[0] - value,
+ extent[1] - value,
+ extent[2] + value,
+ extent[3] + value
+ ];
+ }
+};
+
+
+/**
+ * Creates a clone of an extent.
+ *
+ * @param {ol.Extent} extent Extent to clone.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} The clone.
+ */
+ol.extent.clone = function(extent, opt_extent) {
+ if (opt_extent) {
+ opt_extent[0] = extent[0];
+ opt_extent[1] = extent[1];
+ opt_extent[2] = extent[2];
+ opt_extent[3] = extent[3];
+ return opt_extent;
+ } else {
+ return extent.slice();
+ }
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {number} Closest squared distance.
+ */
+ol.extent.closestSquaredDistanceXY = function(extent, x, y) {
+ var dx, dy;
+ if (x < extent[0]) {
+ dx = extent[0] - x;
+ } else if (extent[2] < x) {
+ dx = x - extent[2];
+ } else {
+ dx = 0;
+ }
+ if (y < extent[1]) {
+ dy = extent[1] - y;
+ } else if (extent[3] < y) {
+ dy = y - extent[3];
+ } else {
+ dy = 0;
+ }
+ return dx * dx + dy * dy;
+};
+
+
+/**
+ * Check if the passed coordinate is contained or on the edge of the extent.
+ *
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {boolean} The coordinate is contained in the extent.
+ * @api stable
+ */
+ol.extent.containsCoordinate = function(extent, coordinate) {
+ return ol.extent.containsXY(extent, coordinate[0], coordinate[1]);
+};
+
+
+/**
+ * Check if one extent contains another.
+ *
+ * An extent is deemed contained if it lies completely within the other extent,
+ * including if they share one or more edges.
+ *
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @return {boolean} The second extent is contained by or on the edge of the
+ * first.
+ * @api stable
+ */
+ol.extent.containsExtent = function(extent1, extent2) {
+ return extent1[0] <= extent2[0] && extent2[2] <= extent1[2] &&
+ extent1[1] <= extent2[1] && extent2[3] <= extent1[3];
+};
+
+
+/**
+ * Check if the passed coordinate is contained or on the edge of the extent.
+ *
+ * @param {ol.Extent} extent Extent.
+ * @param {number} x X coordinate.
+ * @param {number} y Y coordinate.
+ * @return {boolean} The x, y values are contained in the extent.
+ * @api stable
+ */
+ol.extent.containsXY = function(extent, x, y) {
+ return extent[0] <= x && x <= extent[2] && extent[1] <= y && y <= extent[3];
+};
+
+
+/**
+ * Get the relationship between a coordinate and extent.
+ * @param {ol.Extent} extent The extent.
+ * @param {ol.Coordinate} coordinate The coordinate.
+ * @return {number} The relationship (bitwise compare with
+ * ol.extent.Relationship).
+ */
+ol.extent.coordinateRelationship = function(extent, coordinate) {
+ var minX = extent[0];
+ var minY = extent[1];
+ var maxX = extent[2];
+ var maxY = extent[3];
+ var x = coordinate[0];
+ var y = coordinate[1];
+ var relationship = ol.extent.Relationship.UNKNOWN;
+ if (x < minX) {
+ relationship = relationship | ol.extent.Relationship.LEFT;
+ } else if (x > maxX) {
+ relationship = relationship | ol.extent.Relationship.RIGHT;
+ }
+ if (y < minY) {
+ relationship = relationship | ol.extent.Relationship.BELOW;
+ } else if (y > maxY) {
+ relationship = relationship | ol.extent.Relationship.ABOVE;
+ }
+ if (relationship === ol.extent.Relationship.UNKNOWN) {
+ relationship = ol.extent.Relationship.INTERSECTING;
+ }
+ return relationship;
+};
+
+
+/**
+ * Create an empty extent.
+ * @return {ol.Extent} Empty extent.
+ * @api stable
+ */
+ol.extent.createEmpty = function() {
+ return [Infinity, Infinity, -Infinity, -Infinity];
+};
+
+
+/**
+ * Create a new extent or update the provided extent.
+ * @param {number} minX Minimum X.
+ * @param {number} minY Minimum Y.
+ * @param {number} maxX Maximum X.
+ * @param {number} maxY Maximum Y.
+ * @param {ol.Extent=} opt_extent Destination extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdate = function(minX, minY, maxX, maxY, opt_extent) {
+ if (opt_extent) {
+ opt_extent[0] = minX;
+ opt_extent[1] = minY;
+ opt_extent[2] = maxX;
+ opt_extent[3] = maxY;
+ return opt_extent;
+ } else {
+ return [minX, minY, maxX, maxY];
+ }
+};
+
+
+/**
+ * Create a new empty extent or make the provided one empty.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdateEmpty = function(opt_extent) {
+ return ol.extent.createOrUpdate(
+ Infinity, Infinity, -Infinity, -Infinity, opt_extent);
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdateFromCoordinate = function(coordinate, opt_extent) {
+ var x = coordinate[0];
+ var y = coordinate[1];
+ return ol.extent.createOrUpdate(x, y, x, y, opt_extent);
+};
+
+
+/**
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdateFromCoordinates = function(coordinates, opt_extent) {
+ var extent = ol.extent.createOrUpdateEmpty(opt_extent);
+ return ol.extent.extendCoordinates(extent, coordinates);
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdateFromFlatCoordinates = function(flatCoordinates, offset, end, stride, opt_extent) {
+ var extent = ol.extent.createOrUpdateEmpty(opt_extent);
+ return ol.extent.extendFlatCoordinates(
+ extent, flatCoordinates, offset, end, stride);
+};
+
+
+/**
+ * @param {Array.<Array.<ol.Coordinate>>} rings Rings.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.createOrUpdateFromRings = function(rings, opt_extent) {
+ var extent = ol.extent.createOrUpdateEmpty(opt_extent);
+ return ol.extent.extendRings(extent, rings);
+};
+
+
+/**
+ * Empty an extent in place.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.empty = function(extent) {
+ extent[0] = extent[1] = Infinity;
+ extent[2] = extent[3] = -Infinity;
+ return extent;
+};
+
+
+/**
+ * Determine if two extents are equivalent.
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @return {boolean} The two extents are equivalent.
+ * @api stable
+ */
+ol.extent.equals = function(extent1, extent2) {
+ return extent1[0] == extent2[0] && extent1[2] == extent2[2] &&
+ extent1[1] == extent2[1] && extent1[3] == extent2[3];
+};
+
+
+/**
+ * Modify an extent to include another extent.
+ * @param {ol.Extent} extent1 The extent to be modified.
+ * @param {ol.Extent} extent2 The extent that will be included in the first.
+ * @return {ol.Extent} A reference to the first (extended) extent.
+ * @api stable
+ */
+ol.extent.extend = function(extent1, extent2) {
+ if (extent2[0] < extent1[0]) {
+ extent1[0] = extent2[0];
+ }
+ if (extent2[2] > extent1[2]) {
+ extent1[2] = extent2[2];
+ }
+ if (extent2[1] < extent1[1]) {
+ extent1[1] = extent2[1];
+ }
+ if (extent2[3] > extent1[3]) {
+ extent1[3] = extent2[3];
+ }
+ return extent1;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ */
+ol.extent.extendCoordinate = function(extent, coordinate) {
+ if (coordinate[0] < extent[0]) {
+ extent[0] = coordinate[0];
+ }
+ if (coordinate[0] > extent[2]) {
+ extent[2] = coordinate[0];
+ }
+ if (coordinate[1] < extent[1]) {
+ extent[1] = coordinate[1];
+ }
+ if (coordinate[1] > extent[3]) {
+ extent[3] = coordinate[1];
+ }
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.extendCoordinates = function(extent, coordinates) {
+ var i, ii;
+ for (i = 0, ii = coordinates.length; i < ii; ++i) {
+ ol.extent.extendCoordinate(extent, coordinates[i]);
+ }
+ return extent;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.extendFlatCoordinates = function(extent, flatCoordinates, offset, end, stride) {
+ for (; offset < end; offset += stride) {
+ ol.extent.extendXY(
+ extent, flatCoordinates[offset], flatCoordinates[offset + 1]);
+ }
+ return extent;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {Array.<Array.<ol.Coordinate>>} rings Rings.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.extendRings = function(extent, rings) {
+ var i, ii;
+ for (i = 0, ii = rings.length; i < ii; ++i) {
+ ol.extent.extendCoordinates(extent, rings[i]);
+ }
+ return extent;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} x X.
+ * @param {number} y Y.
+ */
+ol.extent.extendXY = function(extent, x, y) {
+ extent[0] = Math.min(extent[0], x);
+ extent[1] = Math.min(extent[1], y);
+ extent[2] = Math.max(extent[2], x);
+ extent[3] = Math.max(extent[3], y);
+};
+
+
+/**
+ * This function calls `callback` for each corner of the extent. If the
+ * callback returns a truthy value the function returns that value
+ * immediately. Otherwise the function returns `false`.
+ * @param {ol.Extent} extent Extent.
+ * @param {function(this:T, ol.Coordinate): S} callback Callback.
+ * @param {T=} opt_this Value to use as `this` when executing `callback`.
+ * @return {S|boolean} Value.
+ * @template S, T
+ */
+ol.extent.forEachCorner = function(extent, callback, opt_this) {
+ var val;
+ val = callback.call(opt_this, ol.extent.getBottomLeft(extent));
+ if (val) {
+ return val;
+ }
+ val = callback.call(opt_this, ol.extent.getBottomRight(extent));
+ if (val) {
+ return val;
+ }
+ val = callback.call(opt_this, ol.extent.getTopRight(extent));
+ if (val) {
+ return val;
+ }
+ val = callback.call(opt_this, ol.extent.getTopLeft(extent));
+ if (val) {
+ return val;
+ }
+ return false;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @return {number} Area.
+ */
+ol.extent.getArea = function(extent) {
+ var area = 0;
+ if (!ol.extent.isEmpty(extent)) {
+ area = ol.extent.getWidth(extent) * ol.extent.getHeight(extent);
+ }
+ return area;
+};
+
+
+/**
+ * Get the bottom left coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Coordinate} Bottom left coordinate.
+ * @api stable
+ */
+ol.extent.getBottomLeft = function(extent) {
+ return [extent[0], extent[1]];
+};
+
+
+/**
+ * Get the bottom right coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Coordinate} Bottom right coordinate.
+ * @api stable
+ */
+ol.extent.getBottomRight = function(extent) {
+ return [extent[2], extent[1]];
+};
+
+
+/**
+ * Get the center coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Coordinate} Center.
+ * @api stable
+ */
+ol.extent.getCenter = function(extent) {
+ return [(extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2];
+};
+
+
+/**
+ * Get a corner coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.extent.Corner} corner Corner.
+ * @return {ol.Coordinate} Corner coordinate.
+ */
+ol.extent.getCorner = function(extent, corner) {
+ var coordinate;
+ if (corner === ol.extent.Corner.BOTTOM_LEFT) {
+ coordinate = ol.extent.getBottomLeft(extent);
+ } else if (corner === ol.extent.Corner.BOTTOM_RIGHT) {
+ coordinate = ol.extent.getBottomRight(extent);
+ } else if (corner === ol.extent.Corner.TOP_LEFT) {
+ coordinate = ol.extent.getTopLeft(extent);
+ } else if (corner === ol.extent.Corner.TOP_RIGHT) {
+ coordinate = ol.extent.getTopRight(extent);
+ } else {
+ goog.asserts.fail('Invalid corner: %s', corner);
+ }
+ goog.asserts.assert(coordinate, 'coordinate should be defined');
+ return coordinate;
+};
+
+
+/**
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @return {number} Enlarged area.
+ */
+ol.extent.getEnlargedArea = function(extent1, extent2) {
+ var minX = Math.min(extent1[0], extent2[0]);
+ var minY = Math.min(extent1[1], extent2[1]);
+ var maxX = Math.max(extent1[2], extent2[2]);
+ var maxY = Math.max(extent1[3], extent2[3]);
+ return (maxX - minX) * (maxY - minY);
+};
+
+
+/**
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {ol.Extent=} opt_extent Destination extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.getForViewAndSize = function(center, resolution, rotation, size, opt_extent) {
+ var dx = resolution * size[0] / 2;
+ var dy = resolution * size[1] / 2;
+ var cosRotation = Math.cos(rotation);
+ var sinRotation = Math.sin(rotation);
+ var xCos = dx * cosRotation;
+ var xSin = dx * sinRotation;
+ var yCos = dy * cosRotation;
+ var ySin = dy * sinRotation;
+ var x = center[0];
+ var y = center[1];
+ var x0 = x - xCos + ySin;
+ var x1 = x - xCos - ySin;
+ var x2 = x + xCos - ySin;
+ var x3 = x + xCos + ySin;
+ var y0 = y - xSin - yCos;
+ var y1 = y - xSin + yCos;
+ var y2 = y + xSin + yCos;
+ var y3 = y + xSin - yCos;
+ return ol.extent.createOrUpdate(
+ Math.min(x0, x1, x2, x3), Math.min(y0, y1, y2, y3),
+ Math.max(x0, x1, x2, x3), Math.max(y0, y1, y2, y3),
+ opt_extent);
+};
+
+
+/**
+ * Get the height of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {number} Height.
+ * @api stable
+ */
+ol.extent.getHeight = function(extent) {
+ return extent[3] - extent[1];
+};
+
+
+/**
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @return {number} Intersection area.
+ */
+ol.extent.getIntersectionArea = function(extent1, extent2) {
+ var intersection = ol.extent.getIntersection(extent1, extent2);
+ return ol.extent.getArea(intersection);
+};
+
+
+/**
+ * Get the intersection of two extents.
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @param {ol.Extent=} opt_extent Optional extent to populate with intersection.
+ * @return {ol.Extent} Intersecting extent.
+ * @api stable
+ */
+ol.extent.getIntersection = function(extent1, extent2, opt_extent) {
+ var intersection = opt_extent ? opt_extent : ol.extent.createEmpty();
+ if (ol.extent.intersects(extent1, extent2)) {
+ if (extent1[0] > extent2[0]) {
+ intersection[0] = extent1[0];
+ } else {
+ intersection[0] = extent2[0];
+ }
+ if (extent1[1] > extent2[1]) {
+ intersection[1] = extent1[1];
+ } else {
+ intersection[1] = extent2[1];
+ }
+ if (extent1[2] < extent2[2]) {
+ intersection[2] = extent1[2];
+ } else {
+ intersection[2] = extent2[2];
+ }
+ if (extent1[3] < extent2[3]) {
+ intersection[3] = extent1[3];
+ } else {
+ intersection[3] = extent2[3];
+ }
+ }
+ return intersection;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @return {number} Margin.
+ */
+ol.extent.getMargin = function(extent) {
+ return ol.extent.getWidth(extent) + ol.extent.getHeight(extent);
+};
+
+
+/**
+ * Get the size (width, height) of an extent.
+ * @param {ol.Extent} extent The extent.
+ * @return {ol.Size} The extent size.
+ * @api stable
+ */
+ol.extent.getSize = function(extent) {
+ return [extent[2] - extent[0], extent[3] - extent[1]];
+};
+
+
+/**
+ * Get the top left coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Coordinate} Top left coordinate.
+ * @api stable
+ */
+ol.extent.getTopLeft = function(extent) {
+ return [extent[0], extent[3]];
+};
+
+
+/**
+ * Get the top right coordinate of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Coordinate} Top right coordinate.
+ * @api stable
+ */
+ol.extent.getTopRight = function(extent) {
+ return [extent[2], extent[3]];
+};
+
+
+/**
+ * Get the width of an extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {number} Width.
+ * @api stable
+ */
+ol.extent.getWidth = function(extent) {
+ return extent[2] - extent[0];
+};
+
+
+/**
+ * Determine if one extent intersects another.
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent.
+ * @return {boolean} The two extents intersect.
+ * @api stable
+ */
+ol.extent.intersects = function(extent1, extent2) {
+ return extent1[0] <= extent2[2] &&
+ extent1[2] >= extent2[0] &&
+ extent1[1] <= extent2[3] &&
+ extent1[3] >= extent2[1];
+};
+
+
+/**
+ * Determine if an extent is empty.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} Is empty.
+ * @api stable
+ */
+ol.extent.isEmpty = function(extent) {
+ return extent[2] < extent[0] || extent[3] < extent[1];
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} Is infinite.
+ */
+ol.extent.isInfinite = function(extent) {
+ return extent[0] == -Infinity || extent[1] == -Infinity ||
+ extent[2] == Infinity || extent[3] == Infinity;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ol.extent.normalize = function(extent, coordinate) {
+ return [
+ (coordinate[0] - extent[0]) / (extent[2] - extent[0]),
+ (coordinate[1] - extent[1]) / (extent[3] - extent[1])
+ ];
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.returnOrUpdate = function(extent, opt_extent) {
+ if (opt_extent) {
+ opt_extent[0] = extent[0];
+ opt_extent[1] = extent[1];
+ opt_extent[2] = extent[2];
+ opt_extent[3] = extent[3];
+ return opt_extent;
+ } else {
+ return extent;
+ }
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} value Value.
+ */
+ol.extent.scaleFromCenter = function(extent, value) {
+ var deltaX = ((extent[2] - extent[0]) / 2) * (value - 1);
+ var deltaY = ((extent[3] - extent[1]) / 2) * (value - 1);
+ extent[0] -= deltaX;
+ extent[2] += deltaX;
+ extent[1] -= deltaY;
+ extent[3] += deltaY;
+};
+
+
+/**
+ * Determine if the segment between two coordinates intersects (crosses,
+ * touches, or is contained by) the provided extent.
+ * @param {ol.Extent} extent The extent.
+ * @param {ol.Coordinate} start Segment start coordinate.
+ * @param {ol.Coordinate} end Segment end coordinate.
+ * @return {boolean} The segment intersects the extent.
+ */
+ol.extent.intersectsSegment = function(extent, start, end) {
+ var intersects = false;
+ var startRel = ol.extent.coordinateRelationship(extent, start);
+ var endRel = ol.extent.coordinateRelationship(extent, end);
+ if (startRel === ol.extent.Relationship.INTERSECTING ||
+ endRel === ol.extent.Relationship.INTERSECTING) {
+ intersects = true;
+ } else {
+ var minX = extent[0];
+ var minY = extent[1];
+ var maxX = extent[2];
+ var maxY = extent[3];
+ var startX = start[0];
+ var startY = start[1];
+ var endX = end[0];
+ var endY = end[1];
+ var slope = (endY - startY) / (endX - startX);
+ var x, y;
+ if (!!(endRel & ol.extent.Relationship.ABOVE) &&
+ !(startRel & ol.extent.Relationship.ABOVE)) {
+ // potentially intersects top
+ x = endX - ((endY - maxY) / slope);
+ intersects = x >= minX && x <= maxX;
+ }
+ if (!intersects && !!(endRel & ol.extent.Relationship.RIGHT) &&
+ !(startRel & ol.extent.Relationship.RIGHT)) {
+ // potentially intersects right
+ y = endY - ((endX - maxX) * slope);
+ intersects = y >= minY && y <= maxY;
+ }
+ if (!intersects && !!(endRel & ol.extent.Relationship.BELOW) &&
+ !(startRel & ol.extent.Relationship.BELOW)) {
+ // potentially intersects bottom
+ x = endX - ((endY - minY) / slope);
+ intersects = x >= minX && x <= maxX;
+ }
+ if (!intersects && !!(endRel & ol.extent.Relationship.LEFT) &&
+ !(startRel & ol.extent.Relationship.LEFT)) {
+ // potentially intersects left
+ y = endY - ((endX - minX) * slope);
+ intersects = y >= minY && y <= maxY;
+ }
+
+ }
+ return intersects;
+};
+
+
+/**
+ * @param {ol.Extent} extent1 Extent 1.
+ * @param {ol.Extent} extent2 Extent 2.
+ * @return {boolean} Touches.
+ */
+ol.extent.touches = function(extent1, extent2) {
+ var intersects = ol.extent.intersects(extent1, extent2);
+ return intersects &&
+ (extent1[0] == extent2[2] || extent1[2] == extent2[0] ||
+ extent1[1] == extent2[3] || extent1[3] == extent2[1]);
+};
+
+
+/**
+ * Apply a transform function to the extent.
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.TransformFunction} transformFn Transform function. Called with
+ * [minX, minY, maxX, maxY] extent coordinates.
+ * @param {ol.Extent=} opt_extent Destination extent.
+ * @return {ol.Extent} Extent.
+ * @api stable
+ */
+ol.extent.applyTransform = function(extent, transformFn, opt_extent) {
+ var coordinates = [
+ extent[0], extent[1],
+ extent[0], extent[3],
+ extent[2], extent[1],
+ extent[2], extent[3]
+ ];
+ transformFn(coordinates, coordinates, 2);
+ var xs = [coordinates[0], coordinates[2], coordinates[4], coordinates[6]];
+ var ys = [coordinates[1], coordinates[3], coordinates[5], coordinates[7]];
+ return ol.extent.boundingExtentXYs_(xs, ys, opt_extent);
+};
+
+goog.provide('ol.functions');
+
+/**
+ * Always returns true.
+ * @returns {boolean} true.
+ */
+ol.functions.TRUE = function() {
+ return true;
+};
+
+/**
+ * Always returns false.
+ * @returns {boolean} false.
+ */
+ol.functions.FALSE = function() {
+ return false;
+};
+
+/**
+ * @license
+ * Latitude/longitude spherical geodesy formulae taken from
+ * http://www.movable-type.co.uk/scripts/latlong.html
+ * Licensed under CC-BY-3.0.
+ */
+
+goog.provide('ol.Sphere');
+
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * Class to create objects that can be used with {@link
+ * ol.geom.Polygon.circular}.
+ *
+ * For example to create a sphere whose radius is equal to the semi-major
+ * axis of the WGS84 ellipsoid:
+ *
+ * ```js
+ * var wgs84Sphere= new ol.Sphere(6378137);
+ * ```
+ *
+ * @constructor
+ * @param {number} radius Radius.
+ * @api
+ */
+ol.Sphere = function(radius) {
+
+ /**
+ * @type {number}
+ */
+ this.radius = radius;
+
+};
+
+
+/**
+ * Returns the geodesic area for a list of coordinates.
+ *
+ * [Reference](http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409)
+ * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+ * Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+ * Laboratory, Pasadena, CA, June 2007
+ *
+ * @param {Array.<ol.Coordinate>} coordinates List of coordinates of a linear
+ * ring. If the ring is oriented clockwise, the area will be positive,
+ * otherwise it will be negative.
+ * @return {number} Area.
+ * @api
+ */
+ol.Sphere.prototype.geodesicArea = function(coordinates) {
+ var area = 0, len = coordinates.length;
+ var x1 = coordinates[len - 1][0];
+ var y1 = coordinates[len - 1][1];
+ for (var i = 0; i < len; i++) {
+ var x2 = coordinates[i][0], y2 = coordinates[i][1];
+ area += ol.math.toRadians(x2 - x1) *
+ (2 + Math.sin(ol.math.toRadians(y1)) +
+ Math.sin(ol.math.toRadians(y2)));
+ x1 = x2;
+ y1 = y2;
+ }
+ return area * this.radius * this.radius / 2.0;
+};
+
+
+/**
+ * Returns the distance from c1 to c2 using the haversine formula.
+ *
+ * @param {ol.Coordinate} c1 Coordinate 1.
+ * @param {ol.Coordinate} c2 Coordinate 2.
+ * @return {number} Haversine distance.
+ * @api
+ */
+ol.Sphere.prototype.haversineDistance = function(c1, c2) {
+ var lat1 = ol.math.toRadians(c1[1]);
+ var lat2 = ol.math.toRadians(c2[1]);
+ var deltaLatBy2 = (lat2 - lat1) / 2;
+ var deltaLonBy2 = ol.math.toRadians(c2[0] - c1[0]) / 2;
+ var a = Math.sin(deltaLatBy2) * Math.sin(deltaLatBy2) +
+ Math.sin(deltaLonBy2) * Math.sin(deltaLonBy2) *
+ Math.cos(lat1) * Math.cos(lat2);
+ return 2 * this.radius * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+};
+
+
+/**
+ * Returns the coordinate at the given distance and bearing from `c1`.
+ *
+ * @param {ol.Coordinate} c1 The origin point (`[lon, lat]` in degrees).
+ * @param {number} distance The great-circle distance between the origin
+ * point and the target point.
+ * @param {number} bearing The bearing (in radians).
+ * @return {ol.Coordinate} The target point.
+ */
+ol.Sphere.prototype.offset = function(c1, distance, bearing) {
+ var lat1 = ol.math.toRadians(c1[1]);
+ var lon1 = ol.math.toRadians(c1[0]);
+ var dByR = distance / this.radius;
+ var lat = Math.asin(
+ Math.sin(lat1) * Math.cos(dByR) +
+ Math.cos(lat1) * Math.sin(dByR) * Math.cos(bearing));
+ var lon = lon1 + Math.atan2(
+ Math.sin(bearing) * Math.sin(dByR) * Math.cos(lat1),
+ Math.cos(dByR) - Math.sin(lat1) * Math.sin(lat));
+ return [ol.math.toDegrees(lon), ol.math.toDegrees(lat)];
+};
+
+goog.provide('ol.sphere.NORMAL');
+
+goog.require('ol.Sphere');
+
+
+/**
+ * The normal sphere.
+ * @const
+ * @type {ol.Sphere}
+ */
+ol.sphere.NORMAL = new ol.Sphere(6370997);
+
+goog.provide('ol.proj');
+goog.provide('ol.proj.METERS_PER_UNIT');
+goog.provide('ol.proj.Projection');
+goog.provide('ol.proj.Units');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.sphere.NORMAL');
+
+
+/**
+ * Projection units: `'degrees'`, `'ft'`, `'m'`, `'pixels'`, `'tile-pixels'` or
+ * `'us-ft'`.
+ * @enum {string}
+ */
+ol.proj.Units = {
+ DEGREES: 'degrees',
+ FEET: 'ft',
+ METERS: 'm',
+ PIXELS: 'pixels',
+ TILE_PIXELS: 'tile-pixels',
+ USFEET: 'us-ft'
+};
+
+
+/**
+ * Meters per unit lookup table.
+ * @const
+ * @type {Object.<ol.proj.Units, number>}
+ * @api stable
+ */
+ol.proj.METERS_PER_UNIT = {};
+ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] =
+ 2 * Math.PI * ol.sphere.NORMAL.radius / 360;
+ol.proj.METERS_PER_UNIT[ol.proj.Units.FEET] = 0.3048;
+ol.proj.METERS_PER_UNIT[ol.proj.Units.METERS] = 1;
+ol.proj.METERS_PER_UNIT[ol.proj.Units.USFEET] = 1200 / 3937;
+
+
+/**
+ * @classdesc
+ * Projection definition class. One of these is created for each projection
+ * supported in the application and stored in the {@link ol.proj} namespace.
+ * You can use these in applications, but this is not required, as API params
+ * and options use {@link ol.ProjectionLike} which means the simple string
+ * code will suffice.
+ *
+ * You can use {@link ol.proj.get} to retrieve the object for a particular
+ * projection.
+ *
+ * The library includes definitions for `EPSG:4326` and `EPSG:3857`, together
+ * with the following aliases:
+ * * `EPSG:4326`: CRS:84, urn:ogc:def:crs:EPSG:6.6:4326,
+ * urn:ogc:def:crs:OGC:1.3:CRS84, urn:ogc:def:crs:OGC:2:84,
+ * http://www.opengis.net/gml/srs/epsg.xml#4326,
+ * urn:x-ogc:def:crs:EPSG:4326
+ * * `EPSG:3857`: EPSG:102100, EPSG:102113, EPSG:900913,
+ * urn:ogc:def:crs:EPSG:6.18:3:3857,
+ * http://www.opengis.net/gml/srs/epsg.xml#3857
+ *
+ * If you use proj4js, aliases can be added using `proj4.defs()`; see
+ * [documentation](https://github.com/proj4js/proj4js). To set an alternative
+ * namespace for proj4, use {@link ol.proj.setProj4}.
+ *
+ * @constructor
+ * @param {olx.ProjectionOptions} options Projection options.
+ * @struct
+ * @api stable
+ */
+ol.proj.Projection = function(options) {
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.code_ = options.code;
+
+ /**
+ * @private
+ * @type {ol.proj.Units}
+ */
+ this.units_ = /** @type {ol.proj.Units} */ (options.units);
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.extent_ = options.extent !== undefined ? options.extent : null;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.worldExtent_ = options.worldExtent !== undefined ?
+ options.worldExtent : null;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.axisOrientation_ = options.axisOrientation !== undefined ?
+ options.axisOrientation : 'enu';
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.global_ = options.global !== undefined ? options.global : false;
+
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.canWrapX_ = !!(this.global_ && this.extent_);
+
+ /**
+ * @private
+ * @type {function(number, ol.Coordinate):number}
+ */
+ this.getPointResolutionFunc_ = options.getPointResolution !== undefined ?
+ options.getPointResolution : this.getPointResolution_;
+
+ /**
+ * @private
+ * @type {ol.tilegrid.TileGrid}
+ */
+ this.defaultTileGrid_ = null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.metersPerUnit_ = options.metersPerUnit;
+
+ var projections = ol.proj.projections_;
+ var code = options.code;
+ goog.asserts.assert(code !== undefined,
+ 'Option "code" is required for constructing instance');
+ if (ol.ENABLE_PROJ4JS) {
+ var proj4js = ol.proj.proj4_ || ol.global['proj4'];
+ if (typeof proj4js == 'function' && projections[code] === undefined) {
+ var def = proj4js.defs(code);
+ if (def !== undefined) {
+ if (def.axis !== undefined && options.axisOrientation === undefined) {
+ this.axisOrientation_ = def.axis;
+ }
+ if (options.metersPerUnit === undefined) {
+ this.metersPerUnit_ = def.to_meter;
+ }
+ if (options.units === undefined) {
+ this.units_ = def.units;
+ }
+ var currentCode, currentDef, currentProj, proj4Transform;
+ for (currentCode in projections) {
+ currentDef = proj4js.defs(currentCode);
+ if (currentDef !== undefined) {
+ currentProj = ol.proj.get(currentCode);
+ if (currentDef === def) {
+ ol.proj.addEquivalentProjections([currentProj, this]);
+ } else {
+ proj4Transform = proj4js(currentCode, code);
+ ol.proj.addCoordinateTransforms(currentProj, this,
+ proj4Transform.forward, proj4Transform.inverse);
+ }
+ }
+ }
+ }
+ }
+ }
+
+};
+
+
+/**
+ * @return {boolean} The projection is suitable for wrapping the x-axis
+ */
+ol.proj.Projection.prototype.canWrapX = function() {
+ return this.canWrapX_;
+};
+
+
+/**
+ * Get the code for this projection, e.g. 'EPSG:4326'.
+ * @return {string} Code.
+ * @api stable
+ */
+ol.proj.Projection.prototype.getCode = function() {
+ return this.code_;
+};
+
+
+/**
+ * Get the validity extent for this projection.
+ * @return {ol.Extent} Extent.
+ * @api stable
+ */
+ol.proj.Projection.prototype.getExtent = function() {
+ return this.extent_;
+};
+
+
+/**
+ * Get the units of this projection.
+ * @return {ol.proj.Units} Units.
+ * @api stable
+ */
+ol.proj.Projection.prototype.getUnits = function() {
+ return this.units_;
+};
+
+
+/**
+ * Get the amount of meters per unit of this projection. If the projection is
+ * not configured with `metersPerUnit` or a units identifier, the return is
+ * `undefined`.
+ * @return {number|undefined} Meters.
+ * @api stable
+ */
+ol.proj.Projection.prototype.getMetersPerUnit = function() {
+ return this.metersPerUnit_ || ol.proj.METERS_PER_UNIT[this.units_];
+};
+
+
+/**
+ * Get the world extent for this projection.
+ * @return {ol.Extent} Extent.
+ * @api
+ */
+ol.proj.Projection.prototype.getWorldExtent = function() {
+ return this.worldExtent_;
+};
+
+
+/**
+ * Get the axis orientation of this projection.
+ * Example values are:
+ * enu - the default easting, northing, elevation.
+ * neu - northing, easting, up - useful for "lat/long" geographic coordinates,
+ * or south orientated transverse mercator.
+ * wnu - westing, northing, up - some planetary coordinate systems have
+ * "west positive" coordinate systems
+ * @return {string} Axis orientation.
+ */
+ol.proj.Projection.prototype.getAxisOrientation = function() {
+ return this.axisOrientation_;
+};
+
+
+/**
+ * Is this projection a global projection which spans the whole world?
+ * @return {boolean} Whether the projection is global.
+ * @api stable
+ */
+ol.proj.Projection.prototype.isGlobal = function() {
+ return this.global_;
+};
+
+
+/**
+* Set if the projection is a global projection which spans the whole world
+* @param {boolean} global Whether the projection is global.
+* @api stable
+*/
+ol.proj.Projection.prototype.setGlobal = function(global) {
+ this.global_ = global;
+ this.canWrapX_ = !!(global && this.extent_);
+};
+
+
+/**
+ * @return {ol.tilegrid.TileGrid} The default tile grid.
+ */
+ol.proj.Projection.prototype.getDefaultTileGrid = function() {
+ return this.defaultTileGrid_;
+};
+
+
+/**
+ * @param {ol.tilegrid.TileGrid} tileGrid The default tile grid.
+ */
+ol.proj.Projection.prototype.setDefaultTileGrid = function(tileGrid) {
+ this.defaultTileGrid_ = tileGrid;
+};
+
+
+/**
+ * Set the validity extent for this projection.
+ * @param {ol.Extent} extent Extent.
+ * @api stable
+ */
+ol.proj.Projection.prototype.setExtent = function(extent) {
+ this.extent_ = extent;
+ this.canWrapX_ = !!(this.global_ && extent);
+};
+
+
+/**
+ * Set the world extent for this projection.
+ * @param {ol.Extent} worldExtent World extent
+ * [minlon, minlat, maxlon, maxlat].
+ * @api
+ */
+ol.proj.Projection.prototype.setWorldExtent = function(worldExtent) {
+ this.worldExtent_ = worldExtent;
+};
+
+
+/**
+* Set the getPointResolution function for this projection.
+* @param {function(number, ol.Coordinate):number} func Function
+* @api
+*/
+ol.proj.Projection.prototype.setGetPointResolution = function(func) {
+ this.getPointResolutionFunc_ = func;
+};
+
+
+/**
+* Default version.
+* Get the resolution of the point in degrees or distance units.
+* For projections with degrees as the unit this will simply return the
+* provided resolution. For other projections the point resolution is
+* estimated by transforming the 'point' pixel to EPSG:4326,
+* measuring its width and height on the normal sphere,
+* and taking the average of the width and height.
+* @param {number} resolution Nominal resolution in projection units.
+* @param {ol.Coordinate} point Point to find adjusted resolution at.
+* @return {number} Point resolution at point in projection units.
+* @private
+*/
+ol.proj.Projection.prototype.getPointResolution_ = function(resolution, point) {
+ var units = this.getUnits();
+ if (units == ol.proj.Units.DEGREES) {
+ return resolution;
+ } else {
+ // Estimate point resolution by transforming the center pixel to EPSG:4326,
+ // measuring its width and height on the normal sphere, and taking the
+ // average of the width and height.
+ var toEPSG4326 = ol.proj.getTransformFromProjections(
+ this, ol.proj.get('EPSG:4326'));
+ var vertices = [
+ point[0] - resolution / 2, point[1],
+ point[0] + resolution / 2, point[1],
+ point[0], point[1] - resolution / 2,
+ point[0], point[1] + resolution / 2
+ ];
+ vertices = toEPSG4326(vertices, vertices, 2);
+ var width = ol.sphere.NORMAL.haversineDistance(
+ vertices.slice(0, 2), vertices.slice(2, 4));
+ var height = ol.sphere.NORMAL.haversineDistance(
+ vertices.slice(4, 6), vertices.slice(6, 8));
+ var pointResolution = (width + height) / 2;
+ var metersPerUnit = this.getMetersPerUnit();
+ if (metersPerUnit !== undefined) {
+ pointResolution /= metersPerUnit;
+ }
+ return pointResolution;
+ }
+};
+
+
+/**
+ * Get the resolution of the point in degrees or distance units.
+ * For projections with degrees as the unit this will simply return the
+ * provided resolution. The default for other projections is to estimate
+ * the point resolution by transforming the 'point' pixel to EPSG:4326,
+ * measuring its width and height on the normal sphere,
+ * and taking the average of the width and height.
+ * An alternative implementation may be given when constructing a
+ * projection. For many local projections,
+ * such a custom function will return the resolution unchanged.
+ * @param {number} resolution Resolution in projection units.
+ * @param {ol.Coordinate} point Point.
+ * @return {number} Point resolution in projection units.
+ * @api
+ */
+ol.proj.Projection.prototype.getPointResolution = function(resolution, point) {
+ return this.getPointResolutionFunc_(resolution, point);
+};
+
+
+/**
+ * @private
+ * @type {Object.<string, ol.proj.Projection>}
+ */
+ol.proj.projections_ = {};
+
+
+/**
+ * @private
+ * @type {Object.<string, Object.<string, ol.TransformFunction>>}
+ */
+ol.proj.transforms_ = {};
+
+
+/**
+ * @private
+ * @type {proj4}
+ */
+ol.proj.proj4_ = null;
+
+
+if (ol.ENABLE_PROJ4JS) {
+ /**
+ * Register proj4. If not explicitly registered, it will be assumed that
+ * proj4js will be loaded in the global namespace. For example in a
+ * browserify ES6 environment you could use:
+ *
+ * import ol from 'openlayers';
+ * import proj4 from 'proj4';
+ * ol.proj.setProj4(proj4);
+ *
+ * @param {proj4} proj4 Proj4.
+ * @api
+ */
+ ol.proj.setProj4 = function(proj4) {
+ goog.asserts.assert(typeof proj4 == 'function',
+ 'proj4 argument should be a function');
+ ol.proj.proj4_ = proj4;
+ };
+}
+
+
+/**
+ * Registers transformation functions that don't alter coordinates. Those allow
+ * to transform between projections with equal meaning.
+ *
+ * @param {Array.<ol.proj.Projection>} projections Projections.
+ * @api
+ */
+ol.proj.addEquivalentProjections = function(projections) {
+ ol.proj.addProjections(projections);
+ projections.forEach(function(source) {
+ projections.forEach(function(destination) {
+ if (source !== destination) {
+ ol.proj.addTransform(source, destination, ol.proj.cloneTransform);
+ }
+ });
+ });
+};
+
+
+/**
+ * Registers transformation functions to convert coordinates in any projection
+ * in projection1 to any projection in projection2.
+ *
+ * @param {Array.<ol.proj.Projection>} projections1 Projections with equal
+ * meaning.
+ * @param {Array.<ol.proj.Projection>} projections2 Projections with equal
+ * meaning.
+ * @param {ol.TransformFunction} forwardTransform Transformation from any
+ * projection in projection1 to any projection in projection2.
+ * @param {ol.TransformFunction} inverseTransform Transform from any projection
+ * in projection2 to any projection in projection1..
+ */
+ol.proj.addEquivalentTransforms = function(projections1, projections2, forwardTransform, inverseTransform) {
+ projections1.forEach(function(projection1) {
+ projections2.forEach(function(projection2) {
+ ol.proj.addTransform(projection1, projection2, forwardTransform);
+ ol.proj.addTransform(projection2, projection1, inverseTransform);
+ });
+ });
+};
+
+
+/**
+ * Add a Projection object to the list of supported projections that can be
+ * looked up by their code.
+ *
+ * @param {ol.proj.Projection} projection Projection instance.
+ * @api stable
+ */
+ol.proj.addProjection = function(projection) {
+ ol.proj.projections_[projection.getCode()] = projection;
+ ol.proj.addTransform(projection, projection, ol.proj.cloneTransform);
+};
+
+
+/**
+ * @param {Array.<ol.proj.Projection>} projections Projections.
+ */
+ol.proj.addProjections = function(projections) {
+ var addedProjections = [];
+ projections.forEach(function(projection) {
+ addedProjections.push(ol.proj.addProjection(projection));
+ });
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.proj.clearAllProjections = function() {
+ ol.proj.projections_ = {};
+ ol.proj.transforms_ = {};
+};
+
+
+/**
+ * @param {ol.proj.Projection|string|undefined} projection Projection.
+ * @param {string} defaultCode Default code.
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.proj.createProjection = function(projection, defaultCode) {
+ if (!projection) {
+ return ol.proj.get(defaultCode);
+ } else if (typeof projection === 'string') {
+ return ol.proj.get(projection);
+ } else {
+ goog.asserts.assertInstanceof(projection, ol.proj.Projection,
+ 'projection should be an ol.proj.Projection');
+ return projection;
+ }
+};
+
+
+/**
+ * Registers a conversion function to convert coordinates from the source
+ * projection to the destination projection.
+ *
+ * @param {ol.proj.Projection} source Source.
+ * @param {ol.proj.Projection} destination Destination.
+ * @param {ol.TransformFunction} transformFn Transform.
+ */
+ol.proj.addTransform = function(source, destination, transformFn) {
+ var sourceCode = source.getCode();
+ var destinationCode = destination.getCode();
+ var transforms = ol.proj.transforms_;
+ if (!(sourceCode in transforms)) {
+ transforms[sourceCode] = {};
+ }
+ transforms[sourceCode][destinationCode] = transformFn;
+};
+
+
+/**
+ * Registers coordinate transform functions to convert coordinates between the
+ * source projection and the destination projection.
+ * The forward and inverse functions convert coordinate pairs; this function
+ * converts these into the functions used internally which also handle
+ * extents and coordinate arrays.
+ *
+ * @param {ol.ProjectionLike} source Source projection.
+ * @param {ol.ProjectionLike} destination Destination projection.
+ * @param {function(ol.Coordinate): ol.Coordinate} forward The forward transform
+ * function (that is, from the source projection to the destination
+ * projection) that takes a {@link ol.Coordinate} as argument and returns
+ * the transformed {@link ol.Coordinate}.
+ * @param {function(ol.Coordinate): ol.Coordinate} inverse The inverse transform
+ * function (that is, from the destination projection to the source
+ * projection) that takes a {@link ol.Coordinate} as argument and returns
+ * the transformed {@link ol.Coordinate}.
+ * @api stable
+ */
+ol.proj.addCoordinateTransforms = function(source, destination, forward, inverse) {
+ var sourceProj = ol.proj.get(source);
+ var destProj = ol.proj.get(destination);
+ ol.proj.addTransform(sourceProj, destProj,
+ ol.proj.createTransformFromCoordinateTransform(forward));
+ ol.proj.addTransform(destProj, sourceProj,
+ ol.proj.createTransformFromCoordinateTransform(inverse));
+};
+
+
+/**
+ * Creates a {@link ol.TransformFunction} from a simple 2D coordinate transform
+ * function.
+ * @param {function(ol.Coordinate): ol.Coordinate} transform Coordinate
+ * transform.
+ * @return {ol.TransformFunction} Transform function.
+ */
+ol.proj.createTransformFromCoordinateTransform = function(transform) {
+ return (
+ /**
+ * @param {Array.<number>} input Input.
+ * @param {Array.<number>=} opt_output Output.
+ * @param {number=} opt_dimension Dimension.
+ * @return {Array.<number>} Output.
+ */
+ function(input, opt_output, opt_dimension) {
+ var length = input.length;
+ var dimension = opt_dimension !== undefined ? opt_dimension : 2;
+ var output = opt_output !== undefined ? opt_output : new Array(length);
+ var point, i, j;
+ for (i = 0; i < length; i += dimension) {
+ point = transform([input[i], input[i + 1]]);
+ output[i] = point[0];
+ output[i + 1] = point[1];
+ for (j = dimension - 1; j >= 2; --j) {
+ output[i + j] = input[i + j];
+ }
+ }
+ return output;
+ });
+};
+
+
+/**
+ * Unregisters the conversion function to convert coordinates from the source
+ * projection to the destination projection. This method is used to clean up
+ * cached transforms during testing.
+ *
+ * @param {ol.proj.Projection} source Source projection.
+ * @param {ol.proj.Projection} destination Destination projection.
+ * @return {ol.TransformFunction} transformFn The unregistered transform.
+ */
+ol.proj.removeTransform = function(source, destination) {
+ var sourceCode = source.getCode();
+ var destinationCode = destination.getCode();
+ var transforms = ol.proj.transforms_;
+ goog.asserts.assert(sourceCode in transforms,
+ 'sourceCode should be in transforms');
+ goog.asserts.assert(destinationCode in transforms[sourceCode],
+ 'destinationCode should be in transforms of sourceCode');
+ var transform = transforms[sourceCode][destinationCode];
+ delete transforms[sourceCode][destinationCode];
+ if (ol.object.isEmpty(transforms[sourceCode])) {
+ delete transforms[sourceCode];
+ }
+ return transform;
+};
+
+
+/**
+ * Transforms a coordinate from longitude/latitude to a different projection.
+ * @param {ol.Coordinate} coordinate Coordinate as longitude and latitude, i.e.
+ * an array with longitude as 1st and latitude as 2nd element.
+ * @param {ol.ProjectionLike=} opt_projection Target projection. The
+ * default is Web Mercator, i.e. 'EPSG:3857'.
+ * @return {ol.Coordinate} Coordinate projected to the target projection.
+ * @api stable
+ */
+ol.proj.fromLonLat = function(coordinate, opt_projection) {
+ return ol.proj.transform(coordinate, 'EPSG:4326',
+ opt_projection !== undefined ? opt_projection : 'EPSG:3857');
+};
+
+
+/**
+ * Transforms a coordinate to longitude/latitude.
+ * @param {ol.Coordinate} coordinate Projected coordinate.
+ * @param {ol.ProjectionLike=} opt_projection Projection of the coordinate.
+ * The default is Web Mercator, i.e. 'EPSG:3857'.
+ * @return {ol.Coordinate} Coordinate as longitude and latitude, i.e. an array
+ * with longitude as 1st and latitude as 2nd element.
+ * @api stable
+ */
+ol.proj.toLonLat = function(coordinate, opt_projection) {
+ return ol.proj.transform(coordinate,
+ opt_projection !== undefined ? opt_projection : 'EPSG:3857', 'EPSG:4326');
+};
+
+
+/**
+ * Fetches a Projection object for the code specified.
+ *
+ * @param {ol.ProjectionLike} projectionLike Either a code string which is
+ * a combination of authority and identifier such as "EPSG:4326", or an
+ * existing projection object, or undefined.
+ * @return {ol.proj.Projection} Projection object, or null if not in list.
+ * @api stable
+ */
+ol.proj.get = function(projectionLike) {
+ var projection;
+ if (projectionLike instanceof ol.proj.Projection) {
+ projection = projectionLike;
+ } else if (typeof projectionLike === 'string') {
+ var code = projectionLike;
+ projection = ol.proj.projections_[code];
+ if (ol.ENABLE_PROJ4JS) {
+ var proj4js = ol.proj.proj4_ || ol.global['proj4'];
+ if (projection === undefined && typeof proj4js == 'function' &&
+ proj4js.defs(code) !== undefined) {
+ projection = new ol.proj.Projection({code: code});
+ ol.proj.addProjection(projection);
+ }
+ }
+ } else {
+ projection = null;
+ }
+ return projection;
+};
+
+
+/**
+ * Checks if two projections are the same, that is every coordinate in one
+ * projection does represent the same geographic point as the same coordinate in
+ * the other projection.
+ *
+ * @param {ol.proj.Projection} projection1 Projection 1.
+ * @param {ol.proj.Projection} projection2 Projection 2.
+ * @return {boolean} Equivalent.
+ * @api
+ */
+ol.proj.equivalent = function(projection1, projection2) {
+ if (projection1 === projection2) {
+ return true;
+ }
+ var equalUnits = projection1.getUnits() === projection2.getUnits();
+ if (projection1.getCode() === projection2.getCode()) {
+ return equalUnits;
+ } else {
+ var transformFn = ol.proj.getTransformFromProjections(
+ projection1, projection2);
+ return transformFn === ol.proj.cloneTransform && equalUnits;
+ }
+};
+
+
+/**
+ * Given the projection-like objects, searches for a transformation
+ * function to convert a coordinates array from the source projection to the
+ * destination projection.
+ *
+ * @param {ol.ProjectionLike} source Source.
+ * @param {ol.ProjectionLike} destination Destination.
+ * @return {ol.TransformFunction} Transform function.
+ * @api stable
+ */
+ol.proj.getTransform = function(source, destination) {
+ var sourceProjection = ol.proj.get(source);
+ var destinationProjection = ol.proj.get(destination);
+ return ol.proj.getTransformFromProjections(
+ sourceProjection, destinationProjection);
+};
+
+
+/**
+ * Searches in the list of transform functions for the function for converting
+ * coordinates from the source projection to the destination projection.
+ *
+ * @param {ol.proj.Projection} sourceProjection Source Projection object.
+ * @param {ol.proj.Projection} destinationProjection Destination Projection
+ * object.
+ * @return {ol.TransformFunction} Transform function.
+ */
+ol.proj.getTransformFromProjections = function(sourceProjection, destinationProjection) {
+ var transforms = ol.proj.transforms_;
+ var sourceCode = sourceProjection.getCode();
+ var destinationCode = destinationProjection.getCode();
+ var transform;
+ if (sourceCode in transforms && destinationCode in transforms[sourceCode]) {
+ transform = transforms[sourceCode][destinationCode];
+ }
+ if (transform === undefined) {
+ goog.asserts.assert(transform !== undefined, 'transform should be defined');
+ transform = ol.proj.identityTransform;
+ }
+ return transform;
+};
+
+
+/**
+ * @param {Array.<number>} input Input coordinate array.
+ * @param {Array.<number>=} opt_output Output array of coordinate values.
+ * @param {number=} opt_dimension Dimension.
+ * @return {Array.<number>} Input coordinate array (same array as input).
+ */
+ol.proj.identityTransform = function(input, opt_output, opt_dimension) {
+ if (opt_output !== undefined && input !== opt_output) {
+ // TODO: consider making this a warning instead
+ goog.asserts.fail('This should not be used internally.');
+ for (var i = 0, ii = input.length; i < ii; ++i) {
+ opt_output[i] = input[i];
+ }
+ input = opt_output;
+ }
+ return input;
+};
+
+
+/**
+ * @param {Array.<number>} input Input coordinate array.
+ * @param {Array.<number>=} opt_output Output array of coordinate values.
+ * @param {number=} opt_dimension Dimension.
+ * @return {Array.<number>} Output coordinate array (new array, same coordinate
+ * values).
+ */
+ol.proj.cloneTransform = function(input, opt_output, opt_dimension) {
+ var output;
+ if (opt_output !== undefined) {
+ for (var i = 0, ii = input.length; i < ii; ++i) {
+ opt_output[i] = input[i];
+ }
+ output = opt_output;
+ } else {
+ output = input.slice();
+ }
+ return output;
+};
+
+
+/**
+ * Transforms a coordinate from source projection to destination projection.
+ * This returns a new coordinate (and does not modify the original).
+ *
+ * See {@link ol.proj.transformExtent} for extent transformation.
+ * See the transform method of {@link ol.geom.Geometry} and its subclasses for
+ * geometry transforms.
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.ProjectionLike} source Source projection-like.
+ * @param {ol.ProjectionLike} destination Destination projection-like.
+ * @return {ol.Coordinate} Coordinate.
+ * @api stable
+ */
+ol.proj.transform = function(coordinate, source, destination) {
+ var transformFn = ol.proj.getTransform(source, destination);
+ return transformFn(coordinate, undefined, coordinate.length);
+};
+
+
+/**
+ * Transforms an extent from source projection to destination projection. This
+ * returns a new extent (and does not modify the original).
+ *
+ * @param {ol.Extent} extent The extent to transform.
+ * @param {ol.ProjectionLike} source Source projection-like.
+ * @param {ol.ProjectionLike} destination Destination projection-like.
+ * @return {ol.Extent} The transformed extent.
+ * @api stable
+ */
+ol.proj.transformExtent = function(extent, source, destination) {
+ var transformFn = ol.proj.getTransform(source, destination);
+ return ol.extent.applyTransform(extent, transformFn);
+};
+
+
+/**
+ * Transforms the given point to the destination projection.
+ *
+ * @param {ol.Coordinate} point Point.
+ * @param {ol.proj.Projection} sourceProjection Source projection.
+ * @param {ol.proj.Projection} destinationProjection Destination projection.
+ * @return {ol.Coordinate} Point.
+ */
+ol.proj.transformWithProjections = function(point, sourceProjection, destinationProjection) {
+ var transformFn = ol.proj.getTransformFromProjections(
+ sourceProjection, destinationProjection);
+ return transformFn(point);
+};
+
+goog.provide('ol.geom.Geometry');
+goog.provide('ol.geom.GeometryLayout');
+goog.provide('ol.geom.GeometryType');
+
+goog.require('goog.asserts');
+goog.require('ol.functions');
+goog.require('ol.Object');
+goog.require('ol.extent');
+goog.require('ol.proj');
+goog.require('ol.proj.Units');
+
+
+/**
+ * The geometry type. One of `'Point'`, `'LineString'`, `'LinearRing'`,
+ * `'Polygon'`, `'MultiPoint'`, `'MultiLineString'`, `'MultiPolygon'`,
+ * `'GeometryCollection'`, `'Circle'`.
+ * @enum {string}
+ */
+ol.geom.GeometryType = {
+ POINT: 'Point',
+ LINE_STRING: 'LineString',
+ LINEAR_RING: 'LinearRing',
+ POLYGON: 'Polygon',
+ MULTI_POINT: 'MultiPoint',
+ MULTI_LINE_STRING: 'MultiLineString',
+ MULTI_POLYGON: 'MultiPolygon',
+ GEOMETRY_COLLECTION: 'GeometryCollection',
+ CIRCLE: 'Circle'
+};
+
+
+/**
+ * The coordinate layout for geometries, indicating whether a 3rd or 4th z ('Z')
+ * or measure ('M') coordinate is available. Supported values are `'XY'`,
+ * `'XYZ'`, `'XYM'`, `'XYZM'`.
+ * @enum {string}
+ */
+ol.geom.GeometryLayout = {
+ XY: 'XY',
+ XYZ: 'XYZ',
+ XYM: 'XYM',
+ XYZM: 'XYZM'
+};
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for vector geometries.
+ *
+ * To get notified of changes to the geometry, register a listener for the
+ * generic `change` event on your geometry instance.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @api stable
+ */
+ol.geom.Geometry = function() {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.extent_ = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.extentRevision_ = -1;
+
+ /**
+ * @protected
+ * @type {Object.<string, ol.geom.Geometry>}
+ */
+ this.simplifiedGeometryCache = {};
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.simplifiedGeometryMaxMinSquaredTolerance = 0;
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.simplifiedGeometryRevision = 0;
+
+};
+ol.inherits(ol.geom.Geometry, ol.Object);
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @function
+ * @return {!ol.geom.Geometry} Clone.
+ */
+ol.geom.Geometry.prototype.clone = goog.abstractMethod;
+
+
+/**
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {ol.Coordinate} closestPoint Closest point.
+ * @param {number} minSquaredDistance Minimum squared distance.
+ * @return {number} Minimum squared distance.
+ */
+ol.geom.Geometry.prototype.closestPointXY = goog.abstractMethod;
+
+
+/**
+ * Return the closest point of the geometry to the passed point as
+ * {@link ol.Coordinate coordinate}.
+ * @param {ol.Coordinate} point Point.
+ * @param {ol.Coordinate=} opt_closestPoint Closest point.
+ * @return {ol.Coordinate} Closest point.
+ * @api stable
+ */
+ol.geom.Geometry.prototype.getClosestPoint = function(point, opt_closestPoint) {
+ var closestPoint = opt_closestPoint ? opt_closestPoint : [NaN, NaN];
+ this.closestPointXY(point[0], point[1], closestPoint, Infinity);
+ return closestPoint;
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {boolean} Contains coordinate.
+ */
+ol.geom.Geometry.prototype.containsCoordinate = function(coordinate) {
+ return this.containsXY(coordinate[0], coordinate[1]);
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @protected
+ * @return {ol.Extent} extent Extent.
+ */
+ol.geom.Geometry.prototype.computeExtent = goog.abstractMethod;
+
+
+/**
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {boolean} Contains (x, y).
+ */
+ol.geom.Geometry.prototype.containsXY = ol.functions.FALSE;
+
+
+/**
+ * Get the extent of the geometry.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {ol.Extent} extent Extent.
+ * @api stable
+ */
+ol.geom.Geometry.prototype.getExtent = function(opt_extent) {
+ if (this.extentRevision_ != this.getRevision()) {
+ this.extent_ = this.computeExtent(this.extent_);
+ this.extentRevision_ = this.getRevision();
+ }
+ return ol.extent.returnOrUpdate(this.extent_, opt_extent);
+};
+
+
+/**
+ * Rotate the geometry around a given coordinate. This modifies the geometry
+ * coordinates in place.
+ * @param {number} angle Rotation angle in radians.
+ * @param {ol.Coordinate} anchor The rotation center.
+ * @api
+ * @function
+ */
+ol.geom.Geometry.prototype.rotate = goog.abstractMethod;
+
+
+/**
+ * Create a simplified version of this geometry. For linestrings, this uses
+ * the the {@link
+ * https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm
+ * Douglas Peucker} algorithm. For polygons, a quantization-based
+ * simplification is used to preserve topology.
+ * @function
+ * @param {number} tolerance The tolerance distance for simplification.
+ * @return {ol.geom.Geometry} A new, simplified version of the original
+ * geometry.
+ * @api
+ */
+ol.geom.Geometry.prototype.simplify = function(tolerance) {
+ return this.getSimplifiedGeometry(tolerance * tolerance);
+};
+
+
+/**
+ * Create a simplified version of this geometry using the Douglas Peucker
+ * algorithm.
+ * @see https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm
+ * @function
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {ol.geom.Geometry} Simplified geometry.
+ */
+ol.geom.Geometry.prototype.getSimplifiedGeometry = goog.abstractMethod;
+
+
+/**
+ * Get the type of this geometry.
+ * @function
+ * @return {ol.geom.GeometryType} Geometry type.
+ */
+ol.geom.Geometry.prototype.getType = goog.abstractMethod;
+
+
+/**
+ * Apply a transform function to each coordinate of the geometry.
+ * The geometry is modified in place.
+ * If you do not want the geometry modified in place, first `clone()` it and
+ * then use this function on the clone.
+ * @function
+ * @param {ol.TransformFunction} transformFn Transform.
+ */
+ol.geom.Geometry.prototype.applyTransform = goog.abstractMethod;
+
+
+/**
+ * Test if the geometry and the passed extent intersect.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} `true` if the geometry and the extent intersect.
+ * @function
+ */
+ol.geom.Geometry.prototype.intersectsExtent = goog.abstractMethod;
+
+
+/**
+ * Translate the geometry. This modifies the geometry coordinates in place. If
+ * instead you want a new geometry, first `clone()` this geometry.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @function
+ */
+ol.geom.Geometry.prototype.translate = goog.abstractMethod;
+
+
+/**
+ * Transform each coordinate of the geometry from one coordinate reference
+ * system to another. The geometry is modified in place.
+ * For example, a line will be transformed to a line and a circle to a circle.
+ * If you do not want the geometry modified in place, first `clone()` it and
+ * then use this function on the clone.
+ *
+ * @param {ol.ProjectionLike} source The current projection. Can be a
+ * string identifier or a {@link ol.proj.Projection} object.
+ * @param {ol.ProjectionLike} destination The desired projection. Can be a
+ * string identifier or a {@link ol.proj.Projection} object.
+ * @return {ol.geom.Geometry} This geometry. Note that original geometry is
+ * modified in place.
+ * @api stable
+ */
+ol.geom.Geometry.prototype.transform = function(source, destination) {
+ goog.asserts.assert(
+ ol.proj.get(source).getUnits() !== ol.proj.Units.TILE_PIXELS &&
+ ol.proj.get(destination).getUnits() !== ol.proj.Units.TILE_PIXELS,
+ 'cannot transform geometries with TILE_PIXELS units');
+ this.applyTransform(ol.proj.getTransform(source, destination));
+ return this;
+};
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Supplies a Float32Array implementation that implements
+ * most of the Float32Array spec and that can be used when a built-in
+ * implementation is not available.
+ *
+ * Note that if no existing Float32Array implementation is found then
+ * this class and all its public properties are exported as Float32Array.
+ *
+ * Adding support for the other TypedArray classes here does not make sense
+ * since this vector math library only needs Float32Array.
+ *
+ */
+goog.provide('goog.vec.Float32Array');
+
+
+
+/**
+ * Constructs a new Float32Array. The new array is initialized to all zeros.
+ *
+ * @param {goog.vec.Float32Array|Array|ArrayBuffer|number} p0
+ * The length of the array, or an array to initialize the contents of the
+ * new Float32Array.
+ * @constructor
+ * @implements {IArrayLike<number>}
+ * @final
+ */
+goog.vec.Float32Array = function(p0) {
+ this.length = /** @type {number} */ (p0.length || p0);
+ for (var i = 0; i < this.length; i++) {
+ this[i] = p0[i] || 0;
+ }
+};
+
+
+/**
+ * The number of bytes in an element (as defined by the Typed Array
+ * specification).
+ *
+ * @type {number}
+ */
+goog.vec.Float32Array.BYTES_PER_ELEMENT = 4;
+
+
+/**
+ * The number of bytes in an element (as defined by the Typed Array
+ * specification).
+ *
+ * @type {number}
+ */
+goog.vec.Float32Array.prototype.BYTES_PER_ELEMENT = 4;
+
+
+/**
+ * Sets elements of the array.
+ * @param {Array<number>|Float32Array} values The array of values.
+ * @param {number=} opt_offset The offset in this array to start.
+ */
+goog.vec.Float32Array.prototype.set = function(values, opt_offset) {
+ opt_offset = opt_offset || 0;
+ for (var i = 0; i < values.length && opt_offset + i < this.length; i++) {
+ this[opt_offset + i] = values[i];
+ }
+};
+
+
+/**
+ * Creates a string representation of this array.
+ * @return {string} The string version of this array.
+ * @override
+ */
+goog.vec.Float32Array.prototype.toString = Array.prototype.join;
+
+
+/**
+ * Note that we cannot implement the subarray() or (deprecated) slice()
+ * methods properly since doing so would require being able to overload
+ * the [] operator which is not possible in javascript. So we leave
+ * them unimplemented. Any attempt to call these methods will just result
+ * in a javascript error since we leave them undefined.
+ */
+
+
+/**
+ * If no existing Float32Array implementation is found then we export
+ * goog.vec.Float32Array as Float32Array.
+ */
+if (typeof Float32Array == 'undefined') {
+ goog.exportProperty(
+ goog.vec.Float32Array, 'BYTES_PER_ELEMENT',
+ goog.vec.Float32Array.BYTES_PER_ELEMENT);
+ goog.exportProperty(
+ goog.vec.Float32Array.prototype, 'BYTES_PER_ELEMENT',
+ goog.vec.Float32Array.prototype.BYTES_PER_ELEMENT);
+ goog.exportProperty(
+ goog.vec.Float32Array.prototype, 'set',
+ goog.vec.Float32Array.prototype.set);
+ goog.exportProperty(
+ goog.vec.Float32Array.prototype, 'toString',
+ goog.vec.Float32Array.prototype.toString);
+ goog.exportSymbol('Float32Array', goog.vec.Float32Array);
+}
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Supplies a Float64Array implementation that implements
+ * most of the Float64Array spec and that can be used when a built-in
+ * implementation is not available.
+ *
+ * Note that if no existing Float64Array implementation is found then this
+ * class and all its public properties are exported as Float64Array.
+ *
+ * Adding support for the other TypedArray classes here does not make sense
+ * since this vector math library only needs Float32Array and Float64Array.
+ *
+ */
+goog.provide('goog.vec.Float64Array');
+
+
+
+/**
+ * Constructs a new Float64Array. The new array is initialized to all zeros.
+ *
+ * @param {goog.vec.Float64Array|Array|ArrayBuffer|number} p0
+ * The length of the array, or an array to initialize the contents of the
+ * new Float64Array.
+ * @constructor
+ * @implements {IArrayLike<number>}
+ * @final
+ */
+goog.vec.Float64Array = function(p0) {
+ this.length = /** @type {number} */ (p0.length || p0);
+ for (var i = 0; i < this.length; i++) {
+ this[i] = p0[i] || 0;
+ }
+};
+
+
+/**
+ * The number of bytes in an element (as defined by the Typed Array
+ * specification).
+ *
+ * @type {number}
+ */
+goog.vec.Float64Array.BYTES_PER_ELEMENT = 8;
+
+
+/**
+ * The number of bytes in an element (as defined by the Typed Array
+ * specification).
+ *
+ * @type {number}
+ */
+goog.vec.Float64Array.prototype.BYTES_PER_ELEMENT = 8;
+
+
+/**
+ * Sets elements of the array.
+ * @param {Array<number>|Float64Array} values The array of values.
+ * @param {number=} opt_offset The offset in this array to start.
+ */
+goog.vec.Float64Array.prototype.set = function(values, opt_offset) {
+ opt_offset = opt_offset || 0;
+ for (var i = 0; i < values.length && opt_offset + i < this.length; i++) {
+ this[opt_offset + i] = values[i];
+ }
+};
+
+
+/**
+ * Creates a string representation of this array.
+ * @return {string} The string version of this array.
+ * @override
+ */
+goog.vec.Float64Array.prototype.toString = Array.prototype.join;
+
+
+/**
+ * Note that we cannot implement the subarray() or (deprecated) slice()
+ * methods properly since doing so would require being able to overload
+ * the [] operator which is not possible in javascript. So we leave
+ * them unimplemented. Any attempt to call these methods will just result
+ * in a javascript error since we leave them undefined.
+ */
+
+
+/**
+ * If no existing Float64Array implementation is found then we export
+ * goog.vec.Float64Array as Float64Array.
+ */
+if (typeof Float64Array == 'undefined') {
+ try {
+ goog.exportProperty(
+ goog.vec.Float64Array, 'BYTES_PER_ELEMENT',
+ goog.vec.Float64Array.BYTES_PER_ELEMENT);
+ } catch (float64ArrayError) {
+ // Do nothing. This code is in place to fix b/7225850, in which an error
+ // is incorrectly thrown for Google TV on an old Chrome.
+ // TODO(user): remove after that version is retired.
+ }
+
+ goog.exportProperty(
+ goog.vec.Float64Array.prototype, 'BYTES_PER_ELEMENT',
+ goog.vec.Float64Array.prototype.BYTES_PER_ELEMENT);
+ goog.exportProperty(
+ goog.vec.Float64Array.prototype, 'set',
+ goog.vec.Float64Array.prototype.set);
+ goog.exportProperty(
+ goog.vec.Float64Array.prototype, 'toString',
+ goog.vec.Float64Array.prototype.toString);
+ goog.exportSymbol('Float64Array', goog.vec.Float64Array);
+}
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Supplies global data types and constants for the vector math
+ * library.
+ */
+goog.provide('goog.vec');
+goog.provide('goog.vec.AnyType');
+goog.provide('goog.vec.ArrayType');
+goog.provide('goog.vec.Float32');
+goog.provide('goog.vec.Float64');
+goog.provide('goog.vec.Number');
+
+
+/**
+ * On platforms that don't have native Float32Array or Float64Array support we
+ * use a javascript implementation so that this math library can be used on all
+ * platforms.
+ * @suppress {extraRequire}
+ */
+goog.require('goog.vec.Float32Array');
+/** @suppress {extraRequire} */
+goog.require('goog.vec.Float64Array');
+
+// All vector and matrix operations are based upon arrays of numbers using
+// either Float32Array, Float64Array, or a standard Javascript Array of
+// Numbers.
+
+
+/** @typedef {!Float32Array} */
+goog.vec.Float32;
+
+
+/** @typedef {!Float64Array} */
+goog.vec.Float64;
+
+
+/** @typedef {!Array<number>} */
+goog.vec.Number;
+
+
+/** @typedef {!goog.vec.Float32|!goog.vec.Float64|!goog.vec.Number} */
+goog.vec.AnyType;
+
+
+/**
+ * @deprecated Use AnyType.
+ * @typedef {!Float32Array|!Array<number>}
+ */
+goog.vec.ArrayType;
+
+
+/**
+ * For graphics work, 6 decimal places of accuracy are typically all that is
+ * required.
+ *
+ * @type {number}
+ * @const
+ */
+goog.vec.EPSILON = 1e-6;
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Supplies 3 element vectors that are compatible with WebGL.
+ * Each element is a float32 since that is typically the desired size of a
+ * 3-vector in the GPU. The API is structured to avoid unnecessary memory
+ * allocations. The last parameter will typically be the output vector and
+ * an object can be both an input and output parameter to all methods except
+ * where noted.
+ *
+ */
+goog.provide('goog.vec.Vec3');
+
+/** @suppress {extraRequire} */
+goog.require('goog.vec');
+
+/** @typedef {goog.vec.Float32} */ goog.vec.Vec3.Float32;
+/** @typedef {goog.vec.Float64} */ goog.vec.Vec3.Float64;
+/** @typedef {goog.vec.Number} */ goog.vec.Vec3.Number;
+/** @typedef {goog.vec.AnyType} */ goog.vec.Vec3.AnyType;
+
+// The following two types are deprecated - use the above types instead.
+/** @typedef {Float32Array} */ goog.vec.Vec3.Type;
+/** @typedef {goog.vec.ArrayType} */ goog.vec.Vec3.Vec3Like;
+
+
+/**
+ * Creates a 3 element vector of Float32. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec3.Float32} The new 3 element array.
+ */
+goog.vec.Vec3.createFloat32 = function() {
+ return new Float32Array(3);
+};
+
+
+/**
+ * Creates a 3 element vector of Float64. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec3.Float64} The new 3 element array.
+ */
+goog.vec.Vec3.createFloat64 = function() {
+ return new Float64Array(3);
+};
+
+
+/**
+ * Creates a 3 element vector of Number. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec3.Number} The new 3 element array.
+ */
+goog.vec.Vec3.createNumber = function() {
+ var a = new Array(3);
+ goog.vec.Vec3.setFromValues(a, 0, 0, 0);
+ return a;
+};
+
+
+/**
+ * Creates a 3 element vector of Float32Array. The array is initialized to zero.
+ *
+ * @deprecated Use createFloat32.
+ * @return {!goog.vec.Vec3.Type} The new 3 element array.
+ */
+goog.vec.Vec3.create = function() {
+ return new Float32Array(3);
+};
+
+
+/**
+ * Creates a new 3 element Float32 vector initialized with the value from the
+ * given array.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec The source 3 element array.
+ * @return {!goog.vec.Vec3.Float32} The new 3 element array.
+ */
+goog.vec.Vec3.createFloat32FromArray = function(vec) {
+ var newVec = goog.vec.Vec3.createFloat32();
+ goog.vec.Vec3.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+ * Creates a new 3 element Float32 vector initialized with the supplied values.
+ *
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @return {!goog.vec.Vec3.Float32} The new vector.
+ */
+goog.vec.Vec3.createFloat32FromValues = function(v0, v1, v2) {
+ var a = goog.vec.Vec3.createFloat32();
+ goog.vec.Vec3.setFromValues(a, v0, v1, v2);
+ return a;
+};
+
+
+/**
+ * Creates a clone of the given 3 element Float32 vector.
+ *
+ * @param {goog.vec.Vec3.Float32} vec The source 3 element vector.
+ * @return {!goog.vec.Vec3.Float32} The new cloned vector.
+ */
+goog.vec.Vec3.cloneFloat32 = goog.vec.Vec3.createFloat32FromArray;
+
+
+/**
+ * Creates a new 3 element Float64 vector initialized with the value from the
+ * given array.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec The source 3 element array.
+ * @return {!goog.vec.Vec3.Float64} The new 3 element array.
+ */
+goog.vec.Vec3.createFloat64FromArray = function(vec) {
+ var newVec = goog.vec.Vec3.createFloat64();
+ goog.vec.Vec3.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+* Creates a new 3 element Float64 vector initialized with the supplied values.
+*
+* @param {number} v0 The value for element at index 0.
+* @param {number} v1 The value for element at index 1.
+* @param {number} v2 The value for element at index 2.
+* @return {!goog.vec.Vec3.Float64} The new vector.
+*/
+goog.vec.Vec3.createFloat64FromValues = function(v0, v1, v2) {
+ var vec = goog.vec.Vec3.createFloat64();
+ goog.vec.Vec3.setFromValues(vec, v0, v1, v2);
+ return vec;
+};
+
+
+/**
+ * Creates a clone of the given 3 element vector.
+ *
+ * @param {goog.vec.Vec3.Float64} vec The source 3 element vector.
+ * @return {!goog.vec.Vec3.Float64} The new cloned vector.
+ */
+goog.vec.Vec3.cloneFloat64 = goog.vec.Vec3.createFloat64FromArray;
+
+
+/**
+ * Creates a new 3 element vector initialized with the value from the given
+ * array.
+ *
+ * @deprecated Use createFloat32FromArray.
+ * @param {goog.vec.Vec3.Vec3Like} vec The source 3 element array.
+ * @return {!goog.vec.Vec3.Type} The new 3 element array.
+ */
+goog.vec.Vec3.createFromArray = function(vec) {
+ var newVec = goog.vec.Vec3.create();
+ goog.vec.Vec3.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+ * Creates a new 3 element vector initialized with the supplied values.
+ *
+ * @deprecated Use createFloat32FromValues.
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @return {!goog.vec.Vec3.Type} The new vector.
+ */
+goog.vec.Vec3.createFromValues = function(v0, v1, v2) {
+ var vec = goog.vec.Vec3.create();
+ goog.vec.Vec3.setFromValues(vec, v0, v1, v2);
+ return vec;
+};
+
+
+/**
+ * Creates a clone of the given 3 element vector.
+ *
+ * @deprecated Use cloneFloat32.
+ * @param {goog.vec.Vec3.Vec3Like} vec The source 3 element vector.
+ * @return {!goog.vec.Vec3.Type} The new cloned vector.
+ */
+goog.vec.Vec3.clone = function(vec) {
+ var newVec = goog.vec.Vec3.create();
+ goog.vec.Vec3.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+ * Initializes the vector with the given values.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec The vector to receive the values.
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @return {!goog.vec.Vec3.AnyType} Return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.setFromValues = function(vec, v0, v1, v2) {
+ vec[0] = v0;
+ vec[1] = v1;
+ vec[2] = v2;
+ return vec;
+};
+
+
+/**
+ * Initializes the vector with the given array of values.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec The vector to receive the
+ * values.
+ * @param {goog.vec.Vec3.AnyType} values The array of values.
+ * @return {!goog.vec.Vec3.AnyType} Return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.setFromArray = function(vec, values) {
+ vec[0] = values[0];
+ vec[1] = values[1];
+ vec[2] = values[2];
+ return vec;
+};
+
+
+/**
+ * Performs a component-wise addition of vec0 and vec1 together storing the
+ * result into resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The first addend.
+ * @param {goog.vec.Vec3.AnyType} vec1 The second addend.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to
+ * receive the result. May be vec0 or vec1.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.add = function(vec0, vec1, resultVec) {
+ resultVec[0] = vec0[0] + vec1[0];
+ resultVec[1] = vec0[1] + vec1[1];
+ resultVec[2] = vec0[2] + vec1[2];
+ return resultVec;
+};
+
+
+/**
+ * Performs a component-wise subtraction of vec1 from vec0 storing the
+ * result into resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The minuend.
+ * @param {goog.vec.Vec3.AnyType} vec1 The subtrahend.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to
+ * receive the result. May be vec0 or vec1.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.subtract = function(vec0, vec1, resultVec) {
+ resultVec[0] = vec0[0] - vec1[0];
+ resultVec[1] = vec0[1] - vec1[1];
+ resultVec[2] = vec0[2] - vec1[2];
+ return resultVec;
+};
+
+
+/**
+ * Negates vec0, storing the result into resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The vector to negate.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.negate = function(vec0, resultVec) {
+ resultVec[0] = -vec0[0];
+ resultVec[1] = -vec0[1];
+ resultVec[2] = -vec0[2];
+ return resultVec;
+};
+
+
+/**
+ * Takes the absolute value of each component of vec0 storing the result in
+ * resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the result.
+ * May be vec0.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.abs = function(vec0, resultVec) {
+ resultVec[0] = Math.abs(vec0[0]);
+ resultVec[1] = Math.abs(vec0[1]);
+ resultVec[2] = Math.abs(vec0[2]);
+ return resultVec;
+};
+
+
+/**
+ * Multiplies each component of vec0 with scalar storing the product into
+ * resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The source vector.
+ * @param {number} scalar The value to multiply with each component of vec0.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.scale = function(vec0, scalar, resultVec) {
+ resultVec[0] = vec0[0] * scalar;
+ resultVec[1] = vec0[1] * scalar;
+ resultVec[2] = vec0[2] * scalar;
+ return resultVec;
+};
+
+
+/**
+ * Returns the magnitudeSquared of the given vector.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The vector.
+ * @return {number} The magnitude of the vector.
+ */
+goog.vec.Vec3.magnitudeSquared = function(vec0) {
+ var x = vec0[0], y = vec0[1], z = vec0[2];
+ return x * x + y * y + z * z;
+};
+
+
+/**
+ * Returns the magnitude of the given vector.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The vector.
+ * @return {number} The magnitude of the vector.
+ */
+goog.vec.Vec3.magnitude = function(vec0) {
+ var x = vec0[0], y = vec0[1], z = vec0[2];
+ return Math.sqrt(x * x + y * y + z * z);
+};
+
+
+/**
+ * Normalizes the given vector storing the result into resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The vector to normalize.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.normalize = function(vec0, resultVec) {
+ var ilen = 1 / goog.vec.Vec3.magnitude(vec0);
+ resultVec[0] = vec0[0] * ilen;
+ resultVec[1] = vec0[1] * ilen;
+ resultVec[2] = vec0[2] * ilen;
+ return resultVec;
+};
+
+
+/**
+ * Returns the scalar product of vectors v0 and v1.
+ *
+ * @param {goog.vec.Vec3.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec3.AnyType} v1 The second vector.
+ * @return {number} The scalar product.
+ */
+goog.vec.Vec3.dot = function(v0, v1) {
+ return v0[0] * v1[0] + v0[1] * v1[1] + v0[2] * v1[2];
+};
+
+
+/**
+ * Computes the vector (cross) product of v0 and v1 storing the result into
+ * resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec3.AnyType} v1 The second vector.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the
+ * results. May be either v0 or v1.
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.cross = function(v0, v1, resultVec) {
+ var x0 = v0[0], y0 = v0[1], z0 = v0[2];
+ var x1 = v1[0], y1 = v1[1], z1 = v1[2];
+ resultVec[0] = y0 * z1 - z0 * y1;
+ resultVec[1] = z0 * x1 - x0 * z1;
+ resultVec[2] = x0 * y1 - y0 * x1;
+ return resultVec;
+};
+
+
+/**
+ * Returns the squared distance between two points.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 First point.
+ * @param {goog.vec.Vec3.AnyType} vec1 Second point.
+ * @return {number} The squared distance between the points.
+ */
+goog.vec.Vec3.distanceSquared = function(vec0, vec1) {
+ var x = vec0[0] - vec1[0];
+ var y = vec0[1] - vec1[1];
+ var z = vec0[2] - vec1[2];
+ return x * x + y * y + z * z;
+};
+
+
+/**
+ * Returns the distance between two points.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 First point.
+ * @param {goog.vec.Vec3.AnyType} vec1 Second point.
+ * @return {number} The distance between the points.
+ */
+goog.vec.Vec3.distance = function(vec0, vec1) {
+ return Math.sqrt(goog.vec.Vec3.distanceSquared(vec0, vec1));
+};
+
+
+/**
+ * Returns a unit vector pointing from one point to another.
+ * If the input points are equal then the result will be all zeros.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 Origin point.
+ * @param {goog.vec.Vec3.AnyType} vec1 Target point.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the
+ * results (may be vec0 or vec1).
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.direction = function(vec0, vec1, resultVec) {
+ var x = vec1[0] - vec0[0];
+ var y = vec1[1] - vec0[1];
+ var z = vec1[2] - vec0[2];
+ var d = Math.sqrt(x * x + y * y + z * z);
+ if (d) {
+ d = 1 / d;
+ resultVec[0] = x * d;
+ resultVec[1] = y * d;
+ resultVec[2] = z * d;
+ } else {
+ resultVec[0] = resultVec[1] = resultVec[2] = 0;
+ }
+ return resultVec;
+};
+
+
+/**
+ * Linearly interpolate from vec0 to v1 according to f. The value of f should be
+ * in the range [0..1] otherwise the results are undefined.
+ *
+ * @param {goog.vec.Vec3.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec3.AnyType} v1 The second vector.
+ * @param {number} f The interpolation factor.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the
+ * results (may be v0 or v1).
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.lerp = function(v0, v1, f, resultVec) {
+ var x = v0[0], y = v0[1], z = v0[2];
+ resultVec[0] = (v1[0] - x) * f + x;
+ resultVec[1] = (v1[1] - y) * f + y;
+ resultVec[2] = (v1[2] - z) * f + z;
+ return resultVec;
+};
+
+
+/**
+ * Compares the components of vec0 with the components of another vector or
+ * scalar, storing the larger values in resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec3.AnyType|number} limit The limit vector or scalar.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the
+ * results (may be vec0 or limit).
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.max = function(vec0, limit, resultVec) {
+ if (goog.isNumber(limit)) {
+ resultVec[0] = Math.max(vec0[0], limit);
+ resultVec[1] = Math.max(vec0[1], limit);
+ resultVec[2] = Math.max(vec0[2], limit);
+ } else {
+ resultVec[0] = Math.max(vec0[0], limit[0]);
+ resultVec[1] = Math.max(vec0[1], limit[1]);
+ resultVec[2] = Math.max(vec0[2], limit[2]);
+ }
+ return resultVec;
+};
+
+
+/**
+ * Compares the components of vec0 with the components of another vector or
+ * scalar, storing the smaller values in resultVec.
+ *
+ * @param {goog.vec.Vec3.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec3.AnyType|number} limit The limit vector or scalar.
+ * @param {goog.vec.Vec3.AnyType} resultVec The vector to receive the
+ * results (may be vec0 or limit).
+ * @return {!goog.vec.Vec3.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec3.min = function(vec0, limit, resultVec) {
+ if (goog.isNumber(limit)) {
+ resultVec[0] = Math.min(vec0[0], limit);
+ resultVec[1] = Math.min(vec0[1], limit);
+ resultVec[2] = Math.min(vec0[2], limit);
+ } else {
+ resultVec[0] = Math.min(vec0[0], limit[0]);
+ resultVec[1] = Math.min(vec0[1], limit[1]);
+ resultVec[2] = Math.min(vec0[2], limit[2]);
+ }
+ return resultVec;
+};
+
+
+/**
+ * Returns true if the components of v0 are equal to the components of v1.
+ *
+ * @param {goog.vec.Vec3.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec3.AnyType} v1 The second vector.
+ * @return {boolean} True if the vectors are equal, false otherwise.
+ */
+goog.vec.Vec3.equals = function(v0, v1) {
+ return v0.length == v1.length && v0[0] == v1[0] && v0[1] == v1[1] &&
+ v0[2] == v1[2];
+};
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Supplies 4 element vectors that are compatible with WebGL.
+ * Each element is a float32 since that is typically the desired size of a
+ * 4-vector in the GPU. The API is structured to avoid unnecessary memory
+ * allocations. The last parameter will typically be the output vector and
+ * an object can be both an input and output parameter to all methods except
+ * where noted.
+ *
+ */
+goog.provide('goog.vec.Vec4');
+
+/** @suppress {extraRequire} */
+goog.require('goog.vec');
+
+/** @typedef {goog.vec.Float32} */ goog.vec.Vec4.Float32;
+/** @typedef {goog.vec.Float64} */ goog.vec.Vec4.Float64;
+/** @typedef {goog.vec.Number} */ goog.vec.Vec4.Number;
+/** @typedef {goog.vec.AnyType} */ goog.vec.Vec4.AnyType;
+
+// The following two types are deprecated - use the above types instead.
+/** @typedef {Float32Array} */ goog.vec.Vec4.Type;
+/** @typedef {goog.vec.ArrayType} */ goog.vec.Vec4.Vec4Like;
+
+
+/**
+ * Creates a 4 element vector of Float32. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec4.Float32} The new 3 element array.
+ */
+goog.vec.Vec4.createFloat32 = function() {
+ return new Float32Array(4);
+};
+
+
+/**
+ * Creates a 4 element vector of Float64. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec4.Float64} The new 4 element array.
+ */
+goog.vec.Vec4.createFloat64 = function() {
+ return new Float64Array(4);
+};
+
+
+/**
+ * Creates a 4 element vector of Number. The array is initialized to zero.
+ *
+ * @return {!goog.vec.Vec4.Number} The new 4 element array.
+ */
+goog.vec.Vec4.createNumber = function() {
+ var v = new Array(4);
+ goog.vec.Vec4.setFromValues(v, 0, 0, 0, 0);
+ return v;
+};
+
+
+/**
+ * Creates a 4 element vector of Float32Array. The array is initialized to zero.
+ *
+ * @deprecated Use createFloat32.
+ * @return {!goog.vec.Vec4.Type} The new 4 element array.
+ */
+goog.vec.Vec4.create = function() {
+ return new Float32Array(4);
+};
+
+
+/**
+ * Creates a new 4 element vector initialized with the value from the given
+ * array.
+ *
+ * @deprecated Use createFloat32FromArray.
+ * @param {goog.vec.Vec4.Vec4Like} vec The source 4 element array.
+ * @return {!goog.vec.Vec4.Type} The new 4 element array.
+ */
+goog.vec.Vec4.createFromArray = function(vec) {
+ var newVec = goog.vec.Vec4.create();
+ goog.vec.Vec4.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+ * Creates a new 4 element FLoat32 vector initialized with the value from the
+ * given array.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec The source 3 element array.
+ * @return {!goog.vec.Vec4.Float32} The new 3 element array.
+ */
+goog.vec.Vec4.createFloat32FromArray = function(vec) {
+ var newVec = goog.vec.Vec4.createFloat32();
+ goog.vec.Vec4.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+ * Creates a new 4 element Float32 vector initialized with the supplied values.
+ *
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @param {number} v3 The value for element at index 3.
+ * @return {!goog.vec.Vec4.Float32} The new vector.
+ */
+goog.vec.Vec4.createFloat32FromValues = function(v0, v1, v2, v3) {
+ var vec = goog.vec.Vec4.createFloat32();
+ goog.vec.Vec4.setFromValues(vec, v0, v1, v2, v3);
+ return vec;
+};
+
+
+/**
+ * Creates a clone of the given 4 element Float32 vector.
+ *
+ * @param {goog.vec.Vec4.Float32} vec The source 3 element vector.
+ * @return {!goog.vec.Vec4.Float32} The new cloned vector.
+ */
+goog.vec.Vec4.cloneFloat32 = goog.vec.Vec4.createFloat32FromArray;
+
+
+/**
+ * Creates a new 4 element Float64 vector initialized with the value from the
+ * given array.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec The source 4 element array.
+ * @return {!goog.vec.Vec4.Float64} The new 4 element array.
+ */
+goog.vec.Vec4.createFloat64FromArray = function(vec) {
+ var newVec = goog.vec.Vec4.createFloat64();
+ goog.vec.Vec4.setFromArray(newVec, vec);
+ return newVec;
+};
+
+
+/**
+* Creates a new 4 element Float64 vector initialized with the supplied values.
+*
+* @param {number} v0 The value for element at index 0.
+* @param {number} v1 The value for element at index 1.
+* @param {number} v2 The value for element at index 2.
+* @param {number} v3 The value for element at index 3.
+* @return {!goog.vec.Vec4.Float64} The new vector.
+*/
+goog.vec.Vec4.createFloat64FromValues = function(v0, v1, v2, v3) {
+ var vec = goog.vec.Vec4.createFloat64();
+ goog.vec.Vec4.setFromValues(vec, v0, v1, v2, v3);
+ return vec;
+};
+
+
+/**
+ * Creates a clone of the given 4 element vector.
+ *
+ * @param {goog.vec.Vec4.Float64} vec The source 4 element vector.
+ * @return {!goog.vec.Vec4.Float64} The new cloned vector.
+ */
+goog.vec.Vec4.cloneFloat64 = goog.vec.Vec4.createFloat64FromArray;
+
+
+/**
+ * Creates a new 4 element vector initialized with the supplied values.
+ *
+ * @deprecated Use createFloat32FromValues.
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @param {number} v3 The value for element at index 3.
+ * @return {!goog.vec.Vec4.Type} The new vector.
+ */
+goog.vec.Vec4.createFromValues = function(v0, v1, v2, v3) {
+ var vec = goog.vec.Vec4.create();
+ goog.vec.Vec4.setFromValues(vec, v0, v1, v2, v3);
+ return vec;
+};
+
+
+/**
+ * Creates a clone of the given 4 element vector.
+ *
+ * @deprecated Use cloneFloat32.
+ * @param {goog.vec.Vec4.Vec4Like} vec The source 4 element vector.
+ * @return {!goog.vec.Vec4.Type} The new cloned vector.
+ */
+goog.vec.Vec4.clone = goog.vec.Vec4.createFromArray;
+
+
+/**
+ * Initializes the vector with the given values.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec The vector to receive the values.
+ * @param {number} v0 The value for element at index 0.
+ * @param {number} v1 The value for element at index 1.
+ * @param {number} v2 The value for element at index 2.
+ * @param {number} v3 The value for element at index 3.
+ * @return {!goog.vec.Vec4.AnyType} Return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.setFromValues = function(vec, v0, v1, v2, v3) {
+ vec[0] = v0;
+ vec[1] = v1;
+ vec[2] = v2;
+ vec[3] = v3;
+ return vec;
+};
+
+
+/**
+ * Initializes the vector with the given array of values.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec The vector to receive the
+ * values.
+ * @param {goog.vec.Vec4.AnyType} values The array of values.
+ * @return {!goog.vec.Vec4.AnyType} Return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.setFromArray = function(vec, values) {
+ vec[0] = values[0];
+ vec[1] = values[1];
+ vec[2] = values[2];
+ vec[3] = values[3];
+ return vec;
+};
+
+
+/**
+ * Performs a component-wise addition of vec0 and vec1 together storing the
+ * result into resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The first addend.
+ * @param {goog.vec.Vec4.AnyType} vec1 The second addend.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the result. May be vec0 or vec1.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.add = function(vec0, vec1, resultVec) {
+ resultVec[0] = vec0[0] + vec1[0];
+ resultVec[1] = vec0[1] + vec1[1];
+ resultVec[2] = vec0[2] + vec1[2];
+ resultVec[3] = vec0[3] + vec1[3];
+ return resultVec;
+};
+
+
+/**
+ * Performs a component-wise subtraction of vec1 from vec0 storing the
+ * result into resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The minuend.
+ * @param {goog.vec.Vec4.AnyType} vec1 The subtrahend.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the result. May be vec0 or vec1.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.subtract = function(vec0, vec1, resultVec) {
+ resultVec[0] = vec0[0] - vec1[0];
+ resultVec[1] = vec0[1] - vec1[1];
+ resultVec[2] = vec0[2] - vec1[2];
+ resultVec[3] = vec0[3] - vec1[3];
+ return resultVec;
+};
+
+
+/**
+ * Negates vec0, storing the result into resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector to negate.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.negate = function(vec0, resultVec) {
+ resultVec[0] = -vec0[0];
+ resultVec[1] = -vec0[1];
+ resultVec[2] = -vec0[2];
+ resultVec[3] = -vec0[3];
+ return resultVec;
+};
+
+
+/**
+ * Takes the absolute value of each component of vec0 storing the result in
+ * resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to receive the result.
+ * May be vec0.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.abs = function(vec0, resultVec) {
+ resultVec[0] = Math.abs(vec0[0]);
+ resultVec[1] = Math.abs(vec0[1]);
+ resultVec[2] = Math.abs(vec0[2]);
+ resultVec[3] = Math.abs(vec0[3]);
+ return resultVec;
+};
+
+
+/**
+ * Multiplies each component of vec0 with scalar storing the product into
+ * resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The source vector.
+ * @param {number} scalar The value to multiply with each component of vec0.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.scale = function(vec0, scalar, resultVec) {
+ resultVec[0] = vec0[0] * scalar;
+ resultVec[1] = vec0[1] * scalar;
+ resultVec[2] = vec0[2] * scalar;
+ resultVec[3] = vec0[3] * scalar;
+ return resultVec;
+};
+
+
+/**
+ * Returns the magnitudeSquared of the given vector.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector.
+ * @return {number} The magnitude of the vector.
+ */
+goog.vec.Vec4.magnitudeSquared = function(vec0) {
+ var x = vec0[0], y = vec0[1], z = vec0[2], w = vec0[3];
+ return x * x + y * y + z * z + w * w;
+};
+
+
+/**
+ * Returns the magnitude of the given vector.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector.
+ * @return {number} The magnitude of the vector.
+ */
+goog.vec.Vec4.magnitude = function(vec0) {
+ var x = vec0[0], y = vec0[1], z = vec0[2], w = vec0[3];
+ return Math.sqrt(x * x + y * y + z * z + w * w);
+};
+
+
+/**
+ * Normalizes the given vector storing the result into resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector to normalize.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the result. May be vec0.
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.normalize = function(vec0, resultVec) {
+ var ilen = 1 / goog.vec.Vec4.magnitude(vec0);
+ resultVec[0] = vec0[0] * ilen;
+ resultVec[1] = vec0[1] * ilen;
+ resultVec[2] = vec0[2] * ilen;
+ resultVec[3] = vec0[3] * ilen;
+ return resultVec;
+};
+
+
+/**
+ * Returns the scalar product of vectors v0 and v1.
+ *
+ * @param {goog.vec.Vec4.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec4.AnyType} v1 The second vector.
+ * @return {number} The scalar product.
+ */
+goog.vec.Vec4.dot = function(v0, v1) {
+ return v0[0] * v1[0] + v0[1] * v1[1] + v0[2] * v1[2] + v0[3] * v1[3];
+};
+
+
+/**
+ * Linearly interpolate from v0 to v1 according to f. The value of f should be
+ * in the range [0..1] otherwise the results are undefined.
+ *
+ * @param {goog.vec.Vec4.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec4.AnyType} v1 The second vector.
+ * @param {number} f The interpolation factor.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to receive the
+ * results (may be v0 or v1).
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.lerp = function(v0, v1, f, resultVec) {
+ var x = v0[0], y = v0[1], z = v0[2], w = v0[3];
+ resultVec[0] = (v1[0] - x) * f + x;
+ resultVec[1] = (v1[1] - y) * f + y;
+ resultVec[2] = (v1[2] - z) * f + z;
+ resultVec[3] = (v1[3] - w) * f + w;
+ return resultVec;
+};
+
+
+/**
+ * Compares the components of vec0 with the components of another vector or
+ * scalar, storing the larger values in resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec4.AnyType|number} limit The limit vector or scalar.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to receive the
+ * results (may be vec0 or limit).
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.max = function(vec0, limit, resultVec) {
+ if (goog.isNumber(limit)) {
+ resultVec[0] = Math.max(vec0[0], limit);
+ resultVec[1] = Math.max(vec0[1], limit);
+ resultVec[2] = Math.max(vec0[2], limit);
+ resultVec[3] = Math.max(vec0[3], limit);
+ } else {
+ resultVec[0] = Math.max(vec0[0], limit[0]);
+ resultVec[1] = Math.max(vec0[1], limit[1]);
+ resultVec[2] = Math.max(vec0[2], limit[2]);
+ resultVec[3] = Math.max(vec0[3], limit[3]);
+ }
+ return resultVec;
+};
+
+
+/**
+ * Compares the components of vec0 with the components of another vector or
+ * scalar, storing the smaller values in resultVec.
+ *
+ * @param {goog.vec.Vec4.AnyType} vec0 The source vector.
+ * @param {goog.vec.Vec4.AnyType|number} limit The limit vector or scalar.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to receive the
+ * results (may be vec0 or limit).
+ * @return {!goog.vec.Vec4.AnyType} Return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Vec4.min = function(vec0, limit, resultVec) {
+ if (goog.isNumber(limit)) {
+ resultVec[0] = Math.min(vec0[0], limit);
+ resultVec[1] = Math.min(vec0[1], limit);
+ resultVec[2] = Math.min(vec0[2], limit);
+ resultVec[3] = Math.min(vec0[3], limit);
+ } else {
+ resultVec[0] = Math.min(vec0[0], limit[0]);
+ resultVec[1] = Math.min(vec0[1], limit[1]);
+ resultVec[2] = Math.min(vec0[2], limit[2]);
+ resultVec[3] = Math.min(vec0[3], limit[3]);
+ }
+ return resultVec;
+};
+
+
+/**
+ * Returns true if the components of v0 are equal to the components of v1.
+ *
+ * @param {goog.vec.Vec4.AnyType} v0 The first vector.
+ * @param {goog.vec.Vec4.AnyType} v1 The second vector.
+ * @return {boolean} True if the vectors are equal, false otherwise.
+ */
+goog.vec.Vec4.equals = function(v0, v1) {
+ return v0.length == v1.length && v0[0] == v1[0] && v0[1] == v1[1] &&
+ v0[2] == v1[2] && v0[3] == v1[3];
+};
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Implements 4x4 matrices and their related functions which are
+ * compatible with WebGL. The API is structured to avoid unnecessary memory
+ * allocations. The last parameter will typically be the output vector and
+ * an object can be both an input and output parameter to all methods except
+ * where noted. Matrix operations follow the mathematical form when multiplying
+ * vectors as follows: resultVec = matrix * vec.
+ *
+ * The matrices are stored in column-major order.
+ *
+ */
+goog.provide('goog.vec.Mat4');
+
+goog.require('goog.vec');
+goog.require('goog.vec.Vec3');
+goog.require('goog.vec.Vec4');
+
+
+/** @typedef {goog.vec.Float32} */ goog.vec.Mat4.Float32;
+/** @typedef {goog.vec.Float64} */ goog.vec.Mat4.Float64;
+/** @typedef {goog.vec.Number} */ goog.vec.Mat4.Number;
+/** @typedef {goog.vec.AnyType} */ goog.vec.Mat4.AnyType;
+
+// The following two types are deprecated - use the above types instead.
+/** @typedef {!Float32Array} */ goog.vec.Mat4.Type;
+/** @typedef {goog.vec.ArrayType} */ goog.vec.Mat4.Mat4Like;
+
+
+/**
+ * Creates the array representation of a 4x4 matrix of Float32.
+ * The use of the array directly instead of a class reduces overhead.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @return {!goog.vec.Mat4.Float32} The new matrix.
+ */
+goog.vec.Mat4.createFloat32 = function() {
+ return new Float32Array(16);
+};
+
+
+/**
+ * Creates the array representation of a 4x4 matrix of Float64.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @return {!goog.vec.Mat4.Float64} The new matrix.
+ */
+goog.vec.Mat4.createFloat64 = function() {
+ return new Float64Array(16);
+};
+
+
+/**
+ * Creates the array representation of a 4x4 matrix of Number.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @return {!goog.vec.Mat4.Number} The new matrix.
+ */
+goog.vec.Mat4.createNumber = function() {
+ var a = new Array(16);
+ goog.vec.Mat4.setFromValues(
+ a, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+ return a;
+};
+
+
+/**
+ * Creates the array representation of a 4x4 matrix of Float32.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @deprecated Use createFloat32.
+ * @return {!goog.vec.Mat4.Type} The new matrix.
+ */
+goog.vec.Mat4.create = function() {
+ return goog.vec.Mat4.createFloat32();
+};
+
+
+/**
+ * Creates a 4x4 identity matrix of Float32.
+ *
+ * @return {!goog.vec.Mat4.Float32} The new 16 element array.
+ */
+goog.vec.Mat4.createFloat32Identity = function() {
+ var mat = goog.vec.Mat4.createFloat32();
+ mat[0] = mat[5] = mat[10] = mat[15] = 1;
+ return mat;
+};
+
+
+/**
+ * Creates a 4x4 identity matrix of Float64.
+ *
+ * @return {!goog.vec.Mat4.Float64} The new 16 element array.
+ */
+goog.vec.Mat4.createFloat64Identity = function() {
+ var mat = goog.vec.Mat4.createFloat64();
+ mat[0] = mat[5] = mat[10] = mat[15] = 1;
+ return mat;
+};
+
+
+/**
+ * Creates a 4x4 identity matrix of Number.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @return {!goog.vec.Mat4.Number} The new 16 element array.
+ */
+goog.vec.Mat4.createNumberIdentity = function() {
+ var a = new Array(16);
+ goog.vec.Mat4.setFromValues(
+ a, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+ return a;
+};
+
+
+/**
+ * Creates the array representation of a 4x4 matrix of Float32.
+ * The returned matrix is cleared to all zeros.
+ *
+ * @deprecated Use createFloat32Identity.
+ * @return {!goog.vec.Mat4.Type} The new 16 element array.
+ */
+goog.vec.Mat4.createIdentity = function() {
+ return goog.vec.Mat4.createFloat32Identity();
+};
+
+
+/**
+ * Creates a 4x4 matrix of Float32 initialized from the given array.
+ *
+ * @param {goog.vec.Mat4.AnyType} matrix The array containing the
+ * matrix values in column major order.
+ * @return {!goog.vec.Mat4.Float32} The new, 16 element array.
+ */
+goog.vec.Mat4.createFloat32FromArray = function(matrix) {
+ var newMatrix = goog.vec.Mat4.createFloat32();
+ goog.vec.Mat4.setFromArray(newMatrix, matrix);
+ return newMatrix;
+};
+
+
+/**
+ * Creates a 4x4 matrix of Float32 initialized from the given values.
+ *
+ * @param {number} v00 The values at (0, 0).
+ * @param {number} v10 The values at (1, 0).
+ * @param {number} v20 The values at (2, 0).
+ * @param {number} v30 The values at (3, 0).
+ * @param {number} v01 The values at (0, 1).
+ * @param {number} v11 The values at (1, 1).
+ * @param {number} v21 The values at (2, 1).
+ * @param {number} v31 The values at (3, 1).
+ * @param {number} v02 The values at (0, 2).
+ * @param {number} v12 The values at (1, 2).
+ * @param {number} v22 The values at (2, 2).
+ * @param {number} v32 The values at (3, 2).
+ * @param {number} v03 The values at (0, 3).
+ * @param {number} v13 The values at (1, 3).
+ * @param {number} v23 The values at (2, 3).
+ * @param {number} v33 The values at (3, 3).
+ * @return {!goog.vec.Mat4.Float32} The new, 16 element array.
+ */
+goog.vec.Mat4.createFloat32FromValues = function(
+ v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32, v03, v13, v23,
+ v33) {
+ var newMatrix = goog.vec.Mat4.createFloat32();
+ goog.vec.Mat4.setFromValues(
+ newMatrix, v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32,
+ v03, v13, v23, v33);
+ return newMatrix;
+};
+
+
+/**
+ * Creates a clone of a 4x4 matrix of Float32.
+ *
+ * @param {goog.vec.Mat4.Float32} matrix The source 4x4 matrix.
+ * @return {!goog.vec.Mat4.Float32} The new 4x4 element matrix.
+ */
+goog.vec.Mat4.cloneFloat32 = goog.vec.Mat4.createFloat32FromArray;
+
+
+/**
+ * Creates a 4x4 matrix of Float64 initialized from the given array.
+ *
+ * @param {goog.vec.Mat4.AnyType} matrix The array containing the
+ * matrix values in column major order.
+ * @return {!goog.vec.Mat4.Float64} The new, nine element array.
+ */
+goog.vec.Mat4.createFloat64FromArray = function(matrix) {
+ var newMatrix = goog.vec.Mat4.createFloat64();
+ goog.vec.Mat4.setFromArray(newMatrix, matrix);
+ return newMatrix;
+};
+
+
+/**
+ * Creates a 4x4 matrix of Float64 initialized from the given values.
+ *
+ * @param {number} v00 The values at (0, 0).
+ * @param {number} v10 The values at (1, 0).
+ * @param {number} v20 The values at (2, 0).
+ * @param {number} v30 The values at (3, 0).
+ * @param {number} v01 The values at (0, 1).
+ * @param {number} v11 The values at (1, 1).
+ * @param {number} v21 The values at (2, 1).
+ * @param {number} v31 The values at (3, 1).
+ * @param {number} v02 The values at (0, 2).
+ * @param {number} v12 The values at (1, 2).
+ * @param {number} v22 The values at (2, 2).
+ * @param {number} v32 The values at (3, 2).
+ * @param {number} v03 The values at (0, 3).
+ * @param {number} v13 The values at (1, 3).
+ * @param {number} v23 The values at (2, 3).
+ * @param {number} v33 The values at (3, 3).
+ * @return {!goog.vec.Mat4.Float64} The new, 16 element array.
+ */
+goog.vec.Mat4.createFloat64FromValues = function(
+ v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32, v03, v13, v23,
+ v33) {
+ var newMatrix = goog.vec.Mat4.createFloat64();
+ goog.vec.Mat4.setFromValues(
+ newMatrix, v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32,
+ v03, v13, v23, v33);
+ return newMatrix;
+};
+
+
+/**
+ * Creates a clone of a 4x4 matrix of Float64.
+ *
+ * @param {goog.vec.Mat4.Float64} matrix The source 4x4 matrix.
+ * @return {!goog.vec.Mat4.Float64} The new 4x4 element matrix.
+ */
+goog.vec.Mat4.cloneFloat64 = goog.vec.Mat4.createFloat64FromArray;
+
+
+/**
+ * Creates a 4x4 matrix of Float32 initialized from the given array.
+ *
+ * @deprecated Use createFloat32FromArray.
+ * @param {goog.vec.Mat4.Mat4Like} matrix The array containing the
+ * matrix values in column major order.
+ * @return {!goog.vec.Mat4.Type} The new, nine element array.
+ */
+goog.vec.Mat4.createFromArray = function(matrix) {
+ var newMatrix = goog.vec.Mat4.createFloat32();
+ goog.vec.Mat4.setFromArray(newMatrix, matrix);
+ return newMatrix;
+};
+
+
+/**
+ * Creates a 4x4 matrix of Float32 initialized from the given values.
+ *
+ * @deprecated Use createFloat32FromValues.
+ * @param {number} v00 The values at (0, 0).
+ * @param {number} v10 The values at (1, 0).
+ * @param {number} v20 The values at (2, 0).
+ * @param {number} v30 The values at (3, 0).
+ * @param {number} v01 The values at (0, 1).
+ * @param {number} v11 The values at (1, 1).
+ * @param {number} v21 The values at (2, 1).
+ * @param {number} v31 The values at (3, 1).
+ * @param {number} v02 The values at (0, 2).
+ * @param {number} v12 The values at (1, 2).
+ * @param {number} v22 The values at (2, 2).
+ * @param {number} v32 The values at (3, 2).
+ * @param {number} v03 The values at (0, 3).
+ * @param {number} v13 The values at (1, 3).
+ * @param {number} v23 The values at (2, 3).
+ * @param {number} v33 The values at (3, 3).
+ * @return {!goog.vec.Mat4.Type} The new, 16 element array.
+ */
+goog.vec.Mat4.createFromValues = function(
+ v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32, v03, v13, v23,
+ v33) {
+ return goog.vec.Mat4.createFloat32FromValues(
+ v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32, v03, v13, v23,
+ v33);
+};
+
+
+/**
+ * Creates a clone of a 4x4 matrix of Float32.
+ *
+ * @deprecated Use cloneFloat32.
+ * @param {goog.vec.Mat4.Mat4Like} matrix The source 4x4 matrix.
+ * @return {!goog.vec.Mat4.Type} The new 4x4 element matrix.
+ */
+goog.vec.Mat4.clone = goog.vec.Mat4.createFromArray;
+
+
+/**
+ * Retrieves the element at the requested row and column.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix containing the
+ * value to retrieve.
+ * @param {number} row The row index.
+ * @param {number} column The column index.
+ * @return {number} The element value at the requested row, column indices.
+ */
+goog.vec.Mat4.getElement = function(mat, row, column) {
+ return mat[row + column * 4];
+};
+
+
+/**
+ * Sets the element at the requested row and column.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to set the value on.
+ * @param {number} row The row index.
+ * @param {number} column The column index.
+ * @param {number} value The value to set at the requested row, column.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setElement = function(mat, row, column, value) {
+ mat[row + column * 4] = value;
+ return mat;
+};
+
+
+/**
+ * Initializes the matrix from the set of values. Note the values supplied are
+ * in column major order.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the
+ * values.
+ * @param {number} v00 The values at (0, 0).
+ * @param {number} v10 The values at (1, 0).
+ * @param {number} v20 The values at (2, 0).
+ * @param {number} v30 The values at (3, 0).
+ * @param {number} v01 The values at (0, 1).
+ * @param {number} v11 The values at (1, 1).
+ * @param {number} v21 The values at (2, 1).
+ * @param {number} v31 The values at (3, 1).
+ * @param {number} v02 The values at (0, 2).
+ * @param {number} v12 The values at (1, 2).
+ * @param {number} v22 The values at (2, 2).
+ * @param {number} v32 The values at (3, 2).
+ * @param {number} v03 The values at (0, 3).
+ * @param {number} v13 The values at (1, 3).
+ * @param {number} v23 The values at (2, 3).
+ * @param {number} v33 The values at (3, 3).
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setFromValues = function(
+ mat, v00, v10, v20, v30, v01, v11, v21, v31, v02, v12, v22, v32, v03, v13,
+ v23, v33) {
+ mat[0] = v00;
+ mat[1] = v10;
+ mat[2] = v20;
+ mat[3] = v30;
+ mat[4] = v01;
+ mat[5] = v11;
+ mat[6] = v21;
+ mat[7] = v31;
+ mat[8] = v02;
+ mat[9] = v12;
+ mat[10] = v22;
+ mat[11] = v32;
+ mat[12] = v03;
+ mat[13] = v13;
+ mat[14] = v23;
+ mat[15] = v33;
+ return mat;
+};
+
+
+/**
+ * Sets the matrix from the array of values stored in column major order.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {goog.vec.Mat4.AnyType} values The column major ordered
+ * array of values to store in the matrix.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setFromArray = function(mat, values) {
+ mat[0] = values[0];
+ mat[1] = values[1];
+ mat[2] = values[2];
+ mat[3] = values[3];
+ mat[4] = values[4];
+ mat[5] = values[5];
+ mat[6] = values[6];
+ mat[7] = values[7];
+ mat[8] = values[8];
+ mat[9] = values[9];
+ mat[10] = values[10];
+ mat[11] = values[11];
+ mat[12] = values[12];
+ mat[13] = values[13];
+ mat[14] = values[14];
+ mat[15] = values[15];
+ return mat;
+};
+
+
+/**
+ * Sets the matrix from the array of values stored in row major order.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {goog.vec.Mat4.AnyType} values The row major ordered array of
+ * values to store in the matrix.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setFromRowMajorArray = function(mat, values) {
+ mat[0] = values[0];
+ mat[1] = values[4];
+ mat[2] = values[8];
+ mat[3] = values[12];
+
+ mat[4] = values[1];
+ mat[5] = values[5];
+ mat[6] = values[9];
+ mat[7] = values[13];
+
+ mat[8] = values[2];
+ mat[9] = values[6];
+ mat[10] = values[10];
+ mat[11] = values[14];
+
+ mat[12] = values[3];
+ mat[13] = values[7];
+ mat[14] = values[11];
+ mat[15] = values[15];
+
+ return mat;
+};
+
+
+/**
+ * Sets the diagonal values of the matrix from the given values.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {number} v00 The values for (0, 0).
+ * @param {number} v11 The values for (1, 1).
+ * @param {number} v22 The values for (2, 2).
+ * @param {number} v33 The values for (3, 3).
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setDiagonalValues = function(mat, v00, v11, v22, v33) {
+ mat[0] = v00;
+ mat[5] = v11;
+ mat[10] = v22;
+ mat[15] = v33;
+ return mat;
+};
+
+
+/**
+ * Sets the diagonal values of the matrix from the given vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {goog.vec.Vec4.AnyType} vec The vector containing the values.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setDiagonal = function(mat, vec) {
+ mat[0] = vec[0];
+ mat[5] = vec[1];
+ mat[10] = vec[2];
+ mat[15] = vec[3];
+ return mat;
+};
+
+
+/**
+ * Gets the diagonal values of the matrix into the given vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix containing the values.
+ * @param {goog.vec.Vec4.AnyType} vec The vector to receive the values.
+ * @param {number=} opt_diagonal Which diagonal to get. A value of 0 selects the
+ * main diagonal, a positive number selects a super diagonal and a negative
+ * number selects a sub diagonal.
+ * @return {goog.vec.Vec4.AnyType} return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.getDiagonal = function(mat, vec, opt_diagonal) {
+ if (!opt_diagonal) {
+ // This is the most common case, so we avoid the for loop.
+ vec[0] = mat[0];
+ vec[1] = mat[5];
+ vec[2] = mat[10];
+ vec[3] = mat[15];
+ } else {
+ var offset = opt_diagonal > 0 ? 4 * opt_diagonal : -opt_diagonal;
+ for (var i = 0; i < 4 - Math.abs(opt_diagonal); i++) {
+ vec[i] = mat[offset + 5 * i];
+ }
+ }
+ return vec;
+};
+
+
+/**
+ * Sets the specified column with the supplied values.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {number} column The column index to set the values on.
+ * @param {number} v0 The value for row 0.
+ * @param {number} v1 The value for row 1.
+ * @param {number} v2 The value for row 2.
+ * @param {number} v3 The value for row 3.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setColumnValues = function(mat, column, v0, v1, v2, v3) {
+ var i = column * 4;
+ mat[i] = v0;
+ mat[i + 1] = v1;
+ mat[i + 2] = v2;
+ mat[i + 3] = v3;
+ return mat;
+};
+
+
+/**
+ * Sets the specified column with the value from the supplied vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {number} column The column index to set the values on.
+ * @param {goog.vec.Vec4.AnyType} vec The vector of elements for the column.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setColumn = function(mat, column, vec) {
+ var i = column * 4;
+ mat[i] = vec[0];
+ mat[i + 1] = vec[1];
+ mat[i + 2] = vec[2];
+ mat[i + 3] = vec[3];
+ return mat;
+};
+
+
+/**
+ * Retrieves the specified column from the matrix into the given vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the values.
+ * @param {number} column The column to get the values from.
+ * @param {goog.vec.Vec4.AnyType} vec The vector of elements to
+ * receive the column.
+ * @return {goog.vec.Vec4.AnyType} return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.getColumn = function(mat, column, vec) {
+ var i = column * 4;
+ vec[0] = mat[i];
+ vec[1] = mat[i + 1];
+ vec[2] = mat[i + 2];
+ vec[3] = mat[i + 3];
+ return vec;
+};
+
+
+/**
+ * Sets the columns of the matrix from the given vectors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {goog.vec.Vec4.AnyType} vec0 The values for column 0.
+ * @param {goog.vec.Vec4.AnyType} vec1 The values for column 1.
+ * @param {goog.vec.Vec4.AnyType} vec2 The values for column 2.
+ * @param {goog.vec.Vec4.AnyType} vec3 The values for column 3.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setColumns = function(mat, vec0, vec1, vec2, vec3) {
+ goog.vec.Mat4.setColumn(mat, 0, vec0);
+ goog.vec.Mat4.setColumn(mat, 1, vec1);
+ goog.vec.Mat4.setColumn(mat, 2, vec2);
+ goog.vec.Mat4.setColumn(mat, 3, vec3);
+ return mat;
+};
+
+
+/**
+ * Retrieves the column values from the given matrix into the given vectors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the columns.
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector to receive column 0.
+ * @param {goog.vec.Vec4.AnyType} vec1 The vector to receive column 1.
+ * @param {goog.vec.Vec4.AnyType} vec2 The vector to receive column 2.
+ * @param {goog.vec.Vec4.AnyType} vec3 The vector to receive column 3.
+ */
+goog.vec.Mat4.getColumns = function(mat, vec0, vec1, vec2, vec3) {
+ goog.vec.Mat4.getColumn(mat, 0, vec0);
+ goog.vec.Mat4.getColumn(mat, 1, vec1);
+ goog.vec.Mat4.getColumn(mat, 2, vec2);
+ goog.vec.Mat4.getColumn(mat, 3, vec3);
+};
+
+
+/**
+ * Sets the row values from the supplied values.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {number} row The index of the row to receive the values.
+ * @param {number} v0 The value for column 0.
+ * @param {number} v1 The value for column 1.
+ * @param {number} v2 The value for column 2.
+ * @param {number} v3 The value for column 3.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setRowValues = function(mat, row, v0, v1, v2, v3) {
+ mat[row] = v0;
+ mat[row + 4] = v1;
+ mat[row + 8] = v2;
+ mat[row + 12] = v3;
+ return mat;
+};
+
+
+/**
+ * Sets the row values from the supplied vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the row values.
+ * @param {number} row The index of the row.
+ * @param {goog.vec.Vec4.AnyType} vec The vector containing the values.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setRow = function(mat, row, vec) {
+ mat[row] = vec[0];
+ mat[row + 4] = vec[1];
+ mat[row + 8] = vec[2];
+ mat[row + 12] = vec[3];
+ return mat;
+};
+
+
+/**
+ * Retrieves the row values into the given vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the values.
+ * @param {number} row The index of the row supplying the values.
+ * @param {goog.vec.Vec4.AnyType} vec The vector to receive the row.
+ * @return {goog.vec.Vec4.AnyType} return vec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.getRow = function(mat, row, vec) {
+ vec[0] = mat[row];
+ vec[1] = mat[row + 4];
+ vec[2] = mat[row + 8];
+ vec[3] = mat[row + 12];
+ return vec;
+};
+
+
+/**
+ * Sets the rows of the matrix from the supplied vectors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to receive the values.
+ * @param {goog.vec.Vec4.AnyType} vec0 The values for row 0.
+ * @param {goog.vec.Vec4.AnyType} vec1 The values for row 1.
+ * @param {goog.vec.Vec4.AnyType} vec2 The values for row 2.
+ * @param {goog.vec.Vec4.AnyType} vec3 The values for row 3.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.setRows = function(mat, vec0, vec1, vec2, vec3) {
+ goog.vec.Mat4.setRow(mat, 0, vec0);
+ goog.vec.Mat4.setRow(mat, 1, vec1);
+ goog.vec.Mat4.setRow(mat, 2, vec2);
+ goog.vec.Mat4.setRow(mat, 3, vec3);
+ return mat;
+};
+
+
+/**
+ * Retrieves the rows of the matrix into the supplied vectors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to supply the values.
+ * @param {goog.vec.Vec4.AnyType} vec0 The vector to receive row 0.
+ * @param {goog.vec.Vec4.AnyType} vec1 The vector to receive row 1.
+ * @param {goog.vec.Vec4.AnyType} vec2 The vector to receive row 2.
+ * @param {goog.vec.Vec4.AnyType} vec3 The vector to receive row 3.
+ */
+goog.vec.Mat4.getRows = function(mat, vec0, vec1, vec2, vec3) {
+ goog.vec.Mat4.getRow(mat, 0, vec0);
+ goog.vec.Mat4.getRow(mat, 1, vec1);
+ goog.vec.Mat4.getRow(mat, 2, vec2);
+ goog.vec.Mat4.getRow(mat, 3, vec3);
+};
+
+
+/**
+ * Makes the given 4x4 matrix the zero matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @return {!goog.vec.Mat4.AnyType} return mat so operations can be chained.
+ */
+goog.vec.Mat4.makeZero = function(mat) {
+ mat[0] = 0;
+ mat[1] = 0;
+ mat[2] = 0;
+ mat[3] = 0;
+ mat[4] = 0;
+ mat[5] = 0;
+ mat[6] = 0;
+ mat[7] = 0;
+ mat[8] = 0;
+ mat[9] = 0;
+ mat[10] = 0;
+ mat[11] = 0;
+ mat[12] = 0;
+ mat[13] = 0;
+ mat[14] = 0;
+ mat[15] = 0;
+ return mat;
+};
+
+
+/**
+ * Makes the given 4x4 matrix the identity matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @return {goog.vec.Mat4.AnyType} return mat so operations can be chained.
+ */
+goog.vec.Mat4.makeIdentity = function(mat) {
+ mat[0] = 1;
+ mat[1] = 0;
+ mat[2] = 0;
+ mat[3] = 0;
+ mat[4] = 0;
+ mat[5] = 1;
+ mat[6] = 0;
+ mat[7] = 0;
+ mat[8] = 0;
+ mat[9] = 0;
+ mat[10] = 1;
+ mat[11] = 0;
+ mat[12] = 0;
+ mat[13] = 0;
+ mat[14] = 0;
+ mat[15] = 1;
+ return mat;
+};
+
+
+/**
+ * Performs a per-component addition of the matrix mat0 and mat1, storing
+ * the result into resultMat.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat0 The first addend.
+ * @param {goog.vec.Mat4.AnyType} mat1 The second addend.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to
+ * receive the results (may be either mat0 or mat1).
+ * @return {goog.vec.Mat4.AnyType} return resultMat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.addMat = function(mat0, mat1, resultMat) {
+ resultMat[0] = mat0[0] + mat1[0];
+ resultMat[1] = mat0[1] + mat1[1];
+ resultMat[2] = mat0[2] + mat1[2];
+ resultMat[3] = mat0[3] + mat1[3];
+ resultMat[4] = mat0[4] + mat1[4];
+ resultMat[5] = mat0[5] + mat1[5];
+ resultMat[6] = mat0[6] + mat1[6];
+ resultMat[7] = mat0[7] + mat1[7];
+ resultMat[8] = mat0[8] + mat1[8];
+ resultMat[9] = mat0[9] + mat1[9];
+ resultMat[10] = mat0[10] + mat1[10];
+ resultMat[11] = mat0[11] + mat1[11];
+ resultMat[12] = mat0[12] + mat1[12];
+ resultMat[13] = mat0[13] + mat1[13];
+ resultMat[14] = mat0[14] + mat1[14];
+ resultMat[15] = mat0[15] + mat1[15];
+ return resultMat;
+};
+
+
+/**
+ * Performs a per-component subtraction of the matrix mat0 and mat1,
+ * storing the result into resultMat.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat0 The minuend.
+ * @param {goog.vec.Mat4.AnyType} mat1 The subtrahend.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to receive
+ * the results (may be either mat0 or mat1).
+ * @return {goog.vec.Mat4.AnyType} return resultMat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.subMat = function(mat0, mat1, resultMat) {
+ resultMat[0] = mat0[0] - mat1[0];
+ resultMat[1] = mat0[1] - mat1[1];
+ resultMat[2] = mat0[2] - mat1[2];
+ resultMat[3] = mat0[3] - mat1[3];
+ resultMat[4] = mat0[4] - mat1[4];
+ resultMat[5] = mat0[5] - mat1[5];
+ resultMat[6] = mat0[6] - mat1[6];
+ resultMat[7] = mat0[7] - mat1[7];
+ resultMat[8] = mat0[8] - mat1[8];
+ resultMat[9] = mat0[9] - mat1[9];
+ resultMat[10] = mat0[10] - mat1[10];
+ resultMat[11] = mat0[11] - mat1[11];
+ resultMat[12] = mat0[12] - mat1[12];
+ resultMat[13] = mat0[13] - mat1[13];
+ resultMat[14] = mat0[14] - mat1[14];
+ resultMat[15] = mat0[15] - mat1[15];
+ return resultMat;
+};
+
+
+/**
+ * Multiplies matrix mat with the given scalar, storing the result
+ * into resultMat.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} scalar The scalar value to multiply to each element of mat.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to receive
+ * the results (may be mat).
+ * @return {goog.vec.Mat4.AnyType} return resultMat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multScalar = function(mat, scalar, resultMat) {
+ resultMat[0] = mat[0] * scalar;
+ resultMat[1] = mat[1] * scalar;
+ resultMat[2] = mat[2] * scalar;
+ resultMat[3] = mat[3] * scalar;
+ resultMat[4] = mat[4] * scalar;
+ resultMat[5] = mat[5] * scalar;
+ resultMat[6] = mat[6] * scalar;
+ resultMat[7] = mat[7] * scalar;
+ resultMat[8] = mat[8] * scalar;
+ resultMat[9] = mat[9] * scalar;
+ resultMat[10] = mat[10] * scalar;
+ resultMat[11] = mat[11] * scalar;
+ resultMat[12] = mat[12] * scalar;
+ resultMat[13] = mat[13] * scalar;
+ resultMat[14] = mat[14] * scalar;
+ resultMat[15] = mat[15] * scalar;
+ return resultMat;
+};
+
+
+/**
+ * Multiplies the two matrices mat0 and mat1 using matrix multiplication,
+ * storing the result into resultMat.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat0 The first (left hand) matrix.
+ * @param {goog.vec.Mat4.AnyType} mat1 The second (right hand) matrix.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to receive
+ * the results (may be either mat0 or mat1).
+ * @return {goog.vec.Mat4.AnyType} return resultMat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multMat = function(mat0, mat1, resultMat) {
+ var a00 = mat0[0], a10 = mat0[1], a20 = mat0[2], a30 = mat0[3];
+ var a01 = mat0[4], a11 = mat0[5], a21 = mat0[6], a31 = mat0[7];
+ var a02 = mat0[8], a12 = mat0[9], a22 = mat0[10], a32 = mat0[11];
+ var a03 = mat0[12], a13 = mat0[13], a23 = mat0[14], a33 = mat0[15];
+
+ var b00 = mat1[0], b10 = mat1[1], b20 = mat1[2], b30 = mat1[3];
+ var b01 = mat1[4], b11 = mat1[5], b21 = mat1[6], b31 = mat1[7];
+ var b02 = mat1[8], b12 = mat1[9], b22 = mat1[10], b32 = mat1[11];
+ var b03 = mat1[12], b13 = mat1[13], b23 = mat1[14], b33 = mat1[15];
+
+ resultMat[0] = a00 * b00 + a01 * b10 + a02 * b20 + a03 * b30;
+ resultMat[1] = a10 * b00 + a11 * b10 + a12 * b20 + a13 * b30;
+ resultMat[2] = a20 * b00 + a21 * b10 + a22 * b20 + a23 * b30;
+ resultMat[3] = a30 * b00 + a31 * b10 + a32 * b20 + a33 * b30;
+
+ resultMat[4] = a00 * b01 + a01 * b11 + a02 * b21 + a03 * b31;
+ resultMat[5] = a10 * b01 + a11 * b11 + a12 * b21 + a13 * b31;
+ resultMat[6] = a20 * b01 + a21 * b11 + a22 * b21 + a23 * b31;
+ resultMat[7] = a30 * b01 + a31 * b11 + a32 * b21 + a33 * b31;
+
+ resultMat[8] = a00 * b02 + a01 * b12 + a02 * b22 + a03 * b32;
+ resultMat[9] = a10 * b02 + a11 * b12 + a12 * b22 + a13 * b32;
+ resultMat[10] = a20 * b02 + a21 * b12 + a22 * b22 + a23 * b32;
+ resultMat[11] = a30 * b02 + a31 * b12 + a32 * b22 + a33 * b32;
+
+ resultMat[12] = a00 * b03 + a01 * b13 + a02 * b23 + a03 * b33;
+ resultMat[13] = a10 * b03 + a11 * b13 + a12 * b23 + a13 * b33;
+ resultMat[14] = a20 * b03 + a21 * b13 + a22 * b23 + a23 * b33;
+ resultMat[15] = a30 * b03 + a31 * b13 + a32 * b23 + a33 * b33;
+ return resultMat;
+};
+
+
+/**
+ * Transposes the given matrix mat storing the result into resultMat.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to transpose.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to receive
+ * the results (may be mat).
+ * @return {goog.vec.Mat4.AnyType} return resultMat so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.transpose = function(mat, resultMat) {
+ if (resultMat == mat) {
+ var a10 = mat[1], a20 = mat[2], a30 = mat[3];
+ var a21 = mat[6], a31 = mat[7];
+ var a32 = mat[11];
+ resultMat[1] = mat[4];
+ resultMat[2] = mat[8];
+ resultMat[3] = mat[12];
+ resultMat[4] = a10;
+ resultMat[6] = mat[9];
+ resultMat[7] = mat[13];
+ resultMat[8] = a20;
+ resultMat[9] = a21;
+ resultMat[11] = mat[14];
+ resultMat[12] = a30;
+ resultMat[13] = a31;
+ resultMat[14] = a32;
+ } else {
+ resultMat[0] = mat[0];
+ resultMat[1] = mat[4];
+ resultMat[2] = mat[8];
+ resultMat[3] = mat[12];
+
+ resultMat[4] = mat[1];
+ resultMat[5] = mat[5];
+ resultMat[6] = mat[9];
+ resultMat[7] = mat[13];
+
+ resultMat[8] = mat[2];
+ resultMat[9] = mat[6];
+ resultMat[10] = mat[10];
+ resultMat[11] = mat[14];
+
+ resultMat[12] = mat[3];
+ resultMat[13] = mat[7];
+ resultMat[14] = mat[11];
+ resultMat[15] = mat[15];
+ }
+ return resultMat;
+};
+
+
+/**
+ * Computes the determinant of the matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to compute the matrix for.
+ * @return {number} The determinant of the matrix.
+ */
+goog.vec.Mat4.determinant = function(mat) {
+ var m00 = mat[0], m10 = mat[1], m20 = mat[2], m30 = mat[3];
+ var m01 = mat[4], m11 = mat[5], m21 = mat[6], m31 = mat[7];
+ var m02 = mat[8], m12 = mat[9], m22 = mat[10], m32 = mat[11];
+ var m03 = mat[12], m13 = mat[13], m23 = mat[14], m33 = mat[15];
+
+ var a0 = m00 * m11 - m10 * m01;
+ var a1 = m00 * m21 - m20 * m01;
+ var a2 = m00 * m31 - m30 * m01;
+ var a3 = m10 * m21 - m20 * m11;
+ var a4 = m10 * m31 - m30 * m11;
+ var a5 = m20 * m31 - m30 * m21;
+ var b0 = m02 * m13 - m12 * m03;
+ var b1 = m02 * m23 - m22 * m03;
+ var b2 = m02 * m33 - m32 * m03;
+ var b3 = m12 * m23 - m22 * m13;
+ var b4 = m12 * m33 - m32 * m13;
+ var b5 = m22 * m33 - m32 * m23;
+
+ return a0 * b5 - a1 * b4 + a2 * b3 + a3 * b2 - a4 * b1 + a5 * b0;
+};
+
+
+/**
+ * Computes the inverse of mat storing the result into resultMat. If the
+ * inverse is defined, this function returns true, false otherwise.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix to invert.
+ * @param {goog.vec.Mat4.AnyType} resultMat The matrix to receive
+ * the result (may be mat).
+ * @return {boolean} True if the inverse is defined. If false is returned,
+ * resultMat is not modified.
+ */
+goog.vec.Mat4.invert = function(mat, resultMat) {
+ var m00 = mat[0], m10 = mat[1], m20 = mat[2], m30 = mat[3];
+ var m01 = mat[4], m11 = mat[5], m21 = mat[6], m31 = mat[7];
+ var m02 = mat[8], m12 = mat[9], m22 = mat[10], m32 = mat[11];
+ var m03 = mat[12], m13 = mat[13], m23 = mat[14], m33 = mat[15];
+
+ var a0 = m00 * m11 - m10 * m01;
+ var a1 = m00 * m21 - m20 * m01;
+ var a2 = m00 * m31 - m30 * m01;
+ var a3 = m10 * m21 - m20 * m11;
+ var a4 = m10 * m31 - m30 * m11;
+ var a5 = m20 * m31 - m30 * m21;
+ var b0 = m02 * m13 - m12 * m03;
+ var b1 = m02 * m23 - m22 * m03;
+ var b2 = m02 * m33 - m32 * m03;
+ var b3 = m12 * m23 - m22 * m13;
+ var b4 = m12 * m33 - m32 * m13;
+ var b5 = m22 * m33 - m32 * m23;
+
+ var det = a0 * b5 - a1 * b4 + a2 * b3 + a3 * b2 - a4 * b1 + a5 * b0;
+ if (det == 0) {
+ return false;
+ }
+
+ var idet = 1.0 / det;
+ resultMat[0] = (m11 * b5 - m21 * b4 + m31 * b3) * idet;
+ resultMat[1] = (-m10 * b5 + m20 * b4 - m30 * b3) * idet;
+ resultMat[2] = (m13 * a5 - m23 * a4 + m33 * a3) * idet;
+ resultMat[3] = (-m12 * a5 + m22 * a4 - m32 * a3) * idet;
+ resultMat[4] = (-m01 * b5 + m21 * b2 - m31 * b1) * idet;
+ resultMat[5] = (m00 * b5 - m20 * b2 + m30 * b1) * idet;
+ resultMat[6] = (-m03 * a5 + m23 * a2 - m33 * a1) * idet;
+ resultMat[7] = (m02 * a5 - m22 * a2 + m32 * a1) * idet;
+ resultMat[8] = (m01 * b4 - m11 * b2 + m31 * b0) * idet;
+ resultMat[9] = (-m00 * b4 + m10 * b2 - m30 * b0) * idet;
+ resultMat[10] = (m03 * a4 - m13 * a2 + m33 * a0) * idet;
+ resultMat[11] = (-m02 * a4 + m12 * a2 - m32 * a0) * idet;
+ resultMat[12] = (-m01 * b3 + m11 * b1 - m21 * b0) * idet;
+ resultMat[13] = (m00 * b3 - m10 * b1 + m20 * b0) * idet;
+ resultMat[14] = (-m03 * a3 + m13 * a1 - m23 * a0) * idet;
+ resultMat[15] = (m02 * a3 - m12 * a1 + m22 * a0) * idet;
+ return true;
+};
+
+
+/**
+ * Returns true if the components of mat0 are equal to the components of mat1.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat0 The first matrix.
+ * @param {goog.vec.Mat4.AnyType} mat1 The second matrix.
+ * @return {boolean} True if the the two matrices are equivalent.
+ */
+goog.vec.Mat4.equals = function(mat0, mat1) {
+ return mat0.length == mat1.length && mat0[0] == mat1[0] &&
+ mat0[1] == mat1[1] && mat0[2] == mat1[2] && mat0[3] == mat1[3] &&
+ mat0[4] == mat1[4] && mat0[5] == mat1[5] && mat0[6] == mat1[6] &&
+ mat0[7] == mat1[7] && mat0[8] == mat1[8] && mat0[9] == mat1[9] &&
+ mat0[10] == mat1[10] && mat0[11] == mat1[11] && mat0[12] == mat1[12] &&
+ mat0[13] == mat1[13] && mat0[14] == mat1[14] && mat0[15] == mat1[15];
+};
+
+
+/**
+ * Transforms the given vector with the given matrix storing the resulting,
+ * transformed vector into resultVec. The input vector is multiplied against the
+ * upper 3x4 matrix omitting the projective component.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the transformation.
+ * @param {goog.vec.Vec3.AnyType} vec The 3 element vector to transform.
+ * @param {goog.vec.Vec3.AnyType} resultVec The 3 element vector to
+ * receive the results (may be vec).
+ * @return {goog.vec.Vec3.AnyType} return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multVec3 = function(mat, vec, resultVec) {
+ var x = vec[0], y = vec[1], z = vec[2];
+ resultVec[0] = x * mat[0] + y * mat[4] + z * mat[8] + mat[12];
+ resultVec[1] = x * mat[1] + y * mat[5] + z * mat[9] + mat[13];
+ resultVec[2] = x * mat[2] + y * mat[6] + z * mat[10] + mat[14];
+ return resultVec;
+};
+
+
+/**
+ * Transforms the given vector with the given matrix storing the resulting,
+ * transformed vector into resultVec. The input vector is multiplied against the
+ * upper 3x3 matrix omitting the projective component and translation
+ * components.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the transformation.
+ * @param {goog.vec.Vec3.AnyType} vec The 3 element vector to transform.
+ * @param {goog.vec.Vec3.AnyType} resultVec The 3 element vector to
+ * receive the results (may be vec).
+ * @return {goog.vec.Vec3.AnyType} return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multVec3NoTranslate = function(mat, vec, resultVec) {
+ var x = vec[0], y = vec[1], z = vec[2];
+ resultVec[0] = x * mat[0] + y * mat[4] + z * mat[8];
+ resultVec[1] = x * mat[1] + y * mat[5] + z * mat[9];
+ resultVec[2] = x * mat[2] + y * mat[6] + z * mat[10];
+ return resultVec;
+};
+
+
+/**
+ * Transforms the given vector with the given matrix storing the resulting,
+ * transformed vector into resultVec. The input vector is multiplied against the
+ * full 4x4 matrix with the homogeneous divide applied to reduce the 4 element
+ * vector to a 3 element vector.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the transformation.
+ * @param {goog.vec.Vec3.AnyType} vec The 3 element vector to transform.
+ * @param {goog.vec.Vec3.AnyType} resultVec The 3 element vector
+ * to receive the results (may be vec).
+ * @return {goog.vec.Vec3.AnyType} return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multVec3Projective = function(mat, vec, resultVec) {
+ var x = vec[0], y = vec[1], z = vec[2];
+ var invw = 1 / (x * mat[3] + y * mat[7] + z * mat[11] + mat[15]);
+ resultVec[0] = (x * mat[0] + y * mat[4] + z * mat[8] + mat[12]) * invw;
+ resultVec[1] = (x * mat[1] + y * mat[5] + z * mat[9] + mat[13]) * invw;
+ resultVec[2] = (x * mat[2] + y * mat[6] + z * mat[10] + mat[14]) * invw;
+ return resultVec;
+};
+
+
+/**
+ * Transforms the given vector with the given matrix storing the resulting,
+ * transformed vector into resultVec.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix supplying the transformation.
+ * @param {goog.vec.Vec4.AnyType} vec The vector to transform.
+ * @param {goog.vec.Vec4.AnyType} resultVec The vector to
+ * receive the results (may be vec).
+ * @return {goog.vec.Vec4.AnyType} return resultVec so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.multVec4 = function(mat, vec, resultVec) {
+ var x = vec[0], y = vec[1], z = vec[2], w = vec[3];
+ resultVec[0] = x * mat[0] + y * mat[4] + z * mat[8] + w * mat[12];
+ resultVec[1] = x * mat[1] + y * mat[5] + z * mat[9] + w * mat[13];
+ resultVec[2] = x * mat[2] + y * mat[6] + z * mat[10] + w * mat[14];
+ resultVec[3] = x * mat[3] + y * mat[7] + z * mat[11] + w * mat[15];
+ return resultVec;
+};
+
+
+/**
+ * Makes the given 4x4 matrix a translation matrix with x, y and z
+ * translation factors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} x The translation along the x axis.
+ * @param {number} y The translation along the y axis.
+ * @param {number} z The translation along the z axis.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeTranslate = function(mat, x, y, z) {
+ goog.vec.Mat4.makeIdentity(mat);
+ return goog.vec.Mat4.setColumnValues(mat, 3, x, y, z, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix as a scale matrix with x, y and z scale factors.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} x The scale along the x axis.
+ * @param {number} y The scale along the y axis.
+ * @param {number} z The scale along the z axis.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeScale = function(mat, x, y, z) {
+ goog.vec.Mat4.makeIdentity(mat);
+ return goog.vec.Mat4.setDiagonalValues(mat, x, y, z, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a rotation matrix with the given rotation
+ * angle about the axis defined by the vector (ax, ay, az).
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The rotation angle in radians.
+ * @param {number} ax The x component of the rotation axis.
+ * @param {number} ay The y component of the rotation axis.
+ * @param {number} az The z component of the rotation axis.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeRotate = function(mat, angle, ax, ay, az) {
+ var c = Math.cos(angle);
+ var d = 1 - c;
+ var s = Math.sin(angle);
+
+ return goog.vec.Mat4.setFromValues(
+ mat, ax * ax * d + c, ax * ay * d + az * s, ax * az * d - ay * s, 0,
+
+ ax * ay * d - az * s, ay * ay * d + c, ay * az * d + ax * s, 0,
+
+ ax * az * d + ay * s, ay * az * d - ax * s, az * az * d + c, 0,
+
+ 0, 0, 0, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a rotation matrix with the given rotation
+ * angle about the X axis.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The rotation angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeRotateX = function(mat, angle) {
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+ return goog.vec.Mat4.setFromValues(
+ mat, 1, 0, 0, 0, 0, c, s, 0, 0, -s, c, 0, 0, 0, 0, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a rotation matrix with the given rotation
+ * angle about the Y axis.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The rotation angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeRotateY = function(mat, angle) {
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+ return goog.vec.Mat4.setFromValues(
+ mat, c, 0, -s, 0, 0, 1, 0, 0, s, 0, c, 0, 0, 0, 0, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a rotation matrix with the given rotation
+ * angle about the Z axis.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The rotation angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeRotateZ = function(mat, angle) {
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+ return goog.vec.Mat4.setFromValues(
+ mat, c, s, 0, 0, -s, c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a perspective projection matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} left The coordinate of the left clipping plane.
+ * @param {number} right The coordinate of the right clipping plane.
+ * @param {number} bottom The coordinate of the bottom clipping plane.
+ * @param {number} top The coordinate of the top clipping plane.
+ * @param {number} near The distance to the near clipping plane.
+ * @param {number} far The distance to the far clipping plane.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeFrustum = function(mat, left, right, bottom, top, near, far) {
+ var x = (2 * near) / (right - left);
+ var y = (2 * near) / (top - bottom);
+ var a = (right + left) / (right - left);
+ var b = (top + bottom) / (top - bottom);
+ var c = -(far + near) / (far - near);
+ var d = -(2 * far * near) / (far - near);
+
+ return goog.vec.Mat4.setFromValues(
+ mat, x, 0, 0, 0, 0, y, 0, 0, a, b, c, -1, 0, 0, d, 0);
+};
+
+
+/**
+ * Makes the given 4x4 matrix perspective projection matrix given a
+ * field of view and aspect ratio.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} fovy The field of view along the y (vertical) axis in
+ * radians.
+ * @param {number} aspect The x (width) to y (height) aspect ratio.
+ * @param {number} near The distance to the near clipping plane.
+ * @param {number} far The distance to the far clipping plane.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makePerspective = function(mat, fovy, aspect, near, far) {
+ var angle = fovy / 2;
+ var dz = far - near;
+ var sinAngle = Math.sin(angle);
+ if (dz == 0 || sinAngle == 0 || aspect == 0) {
+ return mat;
+ }
+
+ var cot = Math.cos(angle) / sinAngle;
+ return goog.vec.Mat4.setFromValues(
+ mat, cot / aspect, 0, 0, 0, 0, cot, 0, 0, 0, 0, -(far + near) / dz, -1, 0,
+ 0, -(2 * near * far) / dz, 0);
+};
+
+
+/**
+ * Makes the given 4x4 matrix an orthographic projection matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} left The coordinate of the left clipping plane.
+ * @param {number} right The coordinate of the right clipping plane.
+ * @param {number} bottom The coordinate of the bottom clipping plane.
+ * @param {number} top The coordinate of the top clipping plane.
+ * @param {number} near The distance to the near clipping plane.
+ * @param {number} far The distance to the far clipping plane.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeOrtho = function(mat, left, right, bottom, top, near, far) {
+ var x = 2 / (right - left);
+ var y = 2 / (top - bottom);
+ var z = -2 / (far - near);
+ var a = -(right + left) / (right - left);
+ var b = -(top + bottom) / (top - bottom);
+ var c = -(far + near) / (far - near);
+
+ return goog.vec.Mat4.setFromValues(
+ mat, x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, a, b, c, 1);
+};
+
+
+/**
+ * Makes the given 4x4 matrix a modelview matrix of a camera so that
+ * the camera is 'looking at' the given center point.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {goog.vec.Vec3.AnyType} eyePt The position of the eye point
+ * (camera origin).
+ * @param {goog.vec.Vec3.AnyType} centerPt The point to aim the camera at.
+ * @param {goog.vec.Vec3.AnyType} worldUpVec The vector that identifies
+ * the up direction for the camera.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeLookAt = function(mat, eyePt, centerPt, worldUpVec) {
+ // Compute the direction vector from the eye point to the center point and
+ // normalize.
+ var fwdVec = goog.vec.Mat4.tmpVec4_[0];
+ goog.vec.Vec3.subtract(centerPt, eyePt, fwdVec);
+ goog.vec.Vec3.normalize(fwdVec, fwdVec);
+ fwdVec[3] = 0;
+
+ // Compute the side vector from the forward vector and the input up vector.
+ var sideVec = goog.vec.Mat4.tmpVec4_[1];
+ goog.vec.Vec3.cross(fwdVec, worldUpVec, sideVec);
+ goog.vec.Vec3.normalize(sideVec, sideVec);
+ sideVec[3] = 0;
+
+ // Now the up vector to form the orthonormal basis.
+ var upVec = goog.vec.Mat4.tmpVec4_[2];
+ goog.vec.Vec3.cross(sideVec, fwdVec, upVec);
+ goog.vec.Vec3.normalize(upVec, upVec);
+ upVec[3] = 0;
+
+ // Update the view matrix with the new orthonormal basis and position the
+ // camera at the given eye point.
+ goog.vec.Vec3.negate(fwdVec, fwdVec);
+ goog.vec.Mat4.setRow(mat, 0, sideVec);
+ goog.vec.Mat4.setRow(mat, 1, upVec);
+ goog.vec.Mat4.setRow(mat, 2, fwdVec);
+ goog.vec.Mat4.setRowValues(mat, 3, 0, 0, 0, 1);
+ goog.vec.Mat4.translate(mat, -eyePt[0], -eyePt[1], -eyePt[2]);
+
+ return mat;
+};
+
+
+/**
+ * Decomposes a matrix into the lookAt vectors eyePt, fwdVec and worldUpVec.
+ * The matrix represents the modelview matrix of a camera. It is the inverse
+ * of lookAt except for the output of the fwdVec instead of centerPt.
+ * The centerPt itself cannot be recovered from a modelview matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {goog.vec.Vec3.AnyType} eyePt The position of the eye point
+ * (camera origin).
+ * @param {goog.vec.Vec3.AnyType} fwdVec The vector describing where
+ * the camera points to.
+ * @param {goog.vec.Vec3.AnyType} worldUpVec The vector that
+ * identifies the up direction for the camera.
+ * @return {boolean} True if the method succeeds, false otherwise.
+ * The method can only fail if the inverse of viewMatrix is not defined.
+ */
+goog.vec.Mat4.toLookAt = function(mat, eyePt, fwdVec, worldUpVec) {
+ // Get eye of the camera.
+ var matInverse = goog.vec.Mat4.tmpMat4_[0];
+ if (!goog.vec.Mat4.invert(mat, matInverse)) {
+ // The input matrix does not have a valid inverse.
+ return false;
+ }
+
+ if (eyePt) {
+ eyePt[0] = matInverse[12];
+ eyePt[1] = matInverse[13];
+ eyePt[2] = matInverse[14];
+ }
+
+ // Get forward vector from the definition of lookAt.
+ if (fwdVec || worldUpVec) {
+ if (!fwdVec) {
+ fwdVec = goog.vec.Mat4.tmpVec3_[0];
+ }
+ fwdVec[0] = -mat[2];
+ fwdVec[1] = -mat[6];
+ fwdVec[2] = -mat[10];
+ // Normalize forward vector.
+ goog.vec.Vec3.normalize(fwdVec, fwdVec);
+ }
+
+ if (worldUpVec) {
+ // Get side vector from the definition of gluLookAt.
+ var side = goog.vec.Mat4.tmpVec3_[1];
+ side[0] = mat[0];
+ side[1] = mat[4];
+ side[2] = mat[8];
+ // Compute up vector as a up = side x forward.
+ goog.vec.Vec3.cross(side, fwdVec, worldUpVec);
+ // Normalize up vector.
+ goog.vec.Vec3.normalize(worldUpVec, worldUpVec);
+ }
+ return true;
+};
+
+
+/**
+ * Makes the given 4x4 matrix a rotation matrix given Euler angles using
+ * the ZXZ convention.
+ * Given the euler angles [theta1, theta2, theta3], the rotation is defined as
+ * rotation = rotation_z(theta1) * rotation_x(theta2) * rotation_z(theta3),
+ * with theta1 in [0, 2 * pi], theta2 in [0, pi] and theta3 in [0, 2 * pi].
+ * rotation_x(theta) means rotation around the X axis of theta radians,
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} theta1 The angle of rotation around the Z axis in radians.
+ * @param {number} theta2 The angle of rotation around the X axis in radians.
+ * @param {number} theta3 The angle of rotation around the Z axis in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.makeEulerZXZ = function(mat, theta1, theta2, theta3) {
+ var c1 = Math.cos(theta1);
+ var s1 = Math.sin(theta1);
+
+ var c2 = Math.cos(theta2);
+ var s2 = Math.sin(theta2);
+
+ var c3 = Math.cos(theta3);
+ var s3 = Math.sin(theta3);
+
+ mat[0] = c1 * c3 - c2 * s1 * s3;
+ mat[1] = c2 * c1 * s3 + c3 * s1;
+ mat[2] = s3 * s2;
+ mat[3] = 0;
+
+ mat[4] = -c1 * s3 - c3 * c2 * s1;
+ mat[5] = c1 * c2 * c3 - s1 * s3;
+ mat[6] = c3 * s2;
+ mat[7] = 0;
+
+ mat[8] = s2 * s1;
+ mat[9] = -c1 * s2;
+ mat[10] = c2;
+ mat[11] = 0;
+
+ mat[12] = 0;
+ mat[13] = 0;
+ mat[14] = 0;
+ mat[15] = 1;
+
+ return mat;
+};
+
+
+/**
+ * Decomposes a rotation matrix into Euler angles using the ZXZ convention so
+ * that rotation = rotation_z(theta1) * rotation_x(theta2) * rotation_z(theta3),
+ * with theta1 in [0, 2 * pi], theta2 in [0, pi] and theta3 in [0, 2 * pi].
+ * rotation_x(theta) means rotation around the X axis of theta radians.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {goog.vec.Vec3.AnyType} euler The ZXZ Euler angles in
+ * radians as [theta1, theta2, theta3].
+ * @param {boolean=} opt_theta2IsNegative Whether theta2 is in [-pi, 0] instead
+ * of the default [0, pi].
+ * @return {goog.vec.Vec4.AnyType} return euler so that operations can be
+ * chained together.
+ */
+goog.vec.Mat4.toEulerZXZ = function(mat, euler, opt_theta2IsNegative) {
+ // There is an ambiguity in the sign of sinTheta2 because of the sqrt.
+ var sinTheta2 = Math.sqrt(mat[2] * mat[2] + mat[6] * mat[6]);
+
+ // By default we explicitely constrain theta2 to be in [0, pi],
+ // so sinTheta2 is always positive. We can change the behavior and specify
+ // theta2 to be negative in [-pi, 0] with opt_Theta2IsNegative.
+ var signTheta2 = opt_theta2IsNegative ? -1 : 1;
+
+ if (sinTheta2 > goog.vec.EPSILON) {
+ euler[2] = Math.atan2(mat[2] * signTheta2, mat[6] * signTheta2);
+ euler[1] = Math.atan2(sinTheta2 * signTheta2, mat[10]);
+ euler[0] = Math.atan2(mat[8] * signTheta2, -mat[9] * signTheta2);
+ } else {
+ // There is also an arbitrary choice for theta1 = 0 or theta2 = 0 here.
+ // We assume theta1 = 0 as some applications do not allow the camera to roll
+ // (i.e. have theta1 != 0).
+ euler[0] = 0;
+ euler[1] = Math.atan2(sinTheta2 * signTheta2, mat[10]);
+ euler[2] = Math.atan2(mat[1], mat[0]);
+ }
+
+ // Atan2 outputs angles in [-pi, pi] so we bring them back to [0, 2 * pi].
+ euler[0] = (euler[0] + Math.PI * 2) % (Math.PI * 2);
+ euler[2] = (euler[2] + Math.PI * 2) % (Math.PI * 2);
+ // For theta2 we want the angle to be in [0, pi] or [-pi, 0] depending on
+ // signTheta2.
+ euler[1] =
+ ((euler[1] * signTheta2 + Math.PI * 2) % (Math.PI * 2)) * signTheta2;
+
+ return euler;
+};
+
+
+/**
+ * Translates the given matrix by x,y,z. Equvialent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeTranslate(goog.vec.Mat4.create(), x, y, z),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} x The translation along the x axis.
+ * @param {number} y The translation along the y axis.
+ * @param {number} z The translation along the z axis.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.translate = function(mat, x, y, z) {
+ return goog.vec.Mat4.setColumnValues(
+ mat, 3, mat[0] * x + mat[4] * y + mat[8] * z + mat[12],
+ mat[1] * x + mat[5] * y + mat[9] * z + mat[13],
+ mat[2] * x + mat[6] * y + mat[10] * z + mat[14],
+ mat[3] * x + mat[7] * y + mat[11] * z + mat[15]);
+};
+
+
+/**
+ * Scales the given matrix by x,y,z. Equivalent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeScale(goog.vec.Mat4.create(), x, y, z),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} x The x scale factor.
+ * @param {number} y The y scale factor.
+ * @param {number} z The z scale factor.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.scale = function(mat, x, y, z) {
+ return goog.vec.Mat4.setFromValues(
+ mat, mat[0] * x, mat[1] * x, mat[2] * x, mat[3] * x, mat[4] * y,
+ mat[5] * y, mat[6] * y, mat[7] * y, mat[8] * z, mat[9] * z, mat[10] * z,
+ mat[11] * z, mat[12], mat[13], mat[14], mat[15]);
+};
+
+
+/**
+ * Rotate the given matrix by angle about the x,y,z axis. Equivalent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeRotate(goog.vec.Mat4.create(), angle, x, y, z),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The angle in radians.
+ * @param {number} x The x component of the rotation axis.
+ * @param {number} y The y component of the rotation axis.
+ * @param {number} z The z component of the rotation axis.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.rotate = function(mat, angle, x, y, z) {
+ var m00 = mat[0], m10 = mat[1], m20 = mat[2], m30 = mat[3];
+ var m01 = mat[4], m11 = mat[5], m21 = mat[6], m31 = mat[7];
+ var m02 = mat[8], m12 = mat[9], m22 = mat[10], m32 = mat[11];
+ var m03 = mat[12], m13 = mat[13], m23 = mat[14], m33 = mat[15];
+
+ var cosAngle = Math.cos(angle);
+ var sinAngle = Math.sin(angle);
+ var diffCosAngle = 1 - cosAngle;
+ var r00 = x * x * diffCosAngle + cosAngle;
+ var r10 = x * y * diffCosAngle + z * sinAngle;
+ var r20 = x * z * diffCosAngle - y * sinAngle;
+
+ var r01 = x * y * diffCosAngle - z * sinAngle;
+ var r11 = y * y * diffCosAngle + cosAngle;
+ var r21 = y * z * diffCosAngle + x * sinAngle;
+
+ var r02 = x * z * diffCosAngle + y * sinAngle;
+ var r12 = y * z * diffCosAngle - x * sinAngle;
+ var r22 = z * z * diffCosAngle + cosAngle;
+
+ return goog.vec.Mat4.setFromValues(
+ mat, m00 * r00 + m01 * r10 + m02 * r20, m10 * r00 + m11 * r10 + m12 * r20,
+ m20 * r00 + m21 * r10 + m22 * r20, m30 * r00 + m31 * r10 + m32 * r20,
+
+ m00 * r01 + m01 * r11 + m02 * r21, m10 * r01 + m11 * r11 + m12 * r21,
+ m20 * r01 + m21 * r11 + m22 * r21, m30 * r01 + m31 * r11 + m32 * r21,
+
+ m00 * r02 + m01 * r12 + m02 * r22, m10 * r02 + m11 * r12 + m12 * r22,
+ m20 * r02 + m21 * r12 + m22 * r22, m30 * r02 + m31 * r12 + m32 * r22,
+
+ m03, m13, m23, m33);
+};
+
+
+/**
+ * Rotate the given matrix by angle about the x axis. Equivalent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeRotateX(goog.vec.Mat4.create(), angle),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.rotateX = function(mat, angle) {
+ var m01 = mat[4], m11 = mat[5], m21 = mat[6], m31 = mat[7];
+ var m02 = mat[8], m12 = mat[9], m22 = mat[10], m32 = mat[11];
+
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+
+ mat[4] = m01 * c + m02 * s;
+ mat[5] = m11 * c + m12 * s;
+ mat[6] = m21 * c + m22 * s;
+ mat[7] = m31 * c + m32 * s;
+ mat[8] = m01 * -s + m02 * c;
+ mat[9] = m11 * -s + m12 * c;
+ mat[10] = m21 * -s + m22 * c;
+ mat[11] = m31 * -s + m32 * c;
+
+ return mat;
+};
+
+
+/**
+ * Rotate the given matrix by angle about the y axis. Equivalent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeRotateY(goog.vec.Mat4.create(), angle),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.rotateY = function(mat, angle) {
+ var m00 = mat[0], m10 = mat[1], m20 = mat[2], m30 = mat[3];
+ var m02 = mat[8], m12 = mat[9], m22 = mat[10], m32 = mat[11];
+
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+
+ mat[0] = m00 * c + m02 * -s;
+ mat[1] = m10 * c + m12 * -s;
+ mat[2] = m20 * c + m22 * -s;
+ mat[3] = m30 * c + m32 * -s;
+ mat[8] = m00 * s + m02 * c;
+ mat[9] = m10 * s + m12 * c;
+ mat[10] = m20 * s + m22 * c;
+ mat[11] = m30 * s + m32 * c;
+
+ return mat;
+};
+
+
+/**
+ * Rotate the given matrix by angle about the z axis. Equivalent to:
+ * goog.vec.Mat4.multMat(
+ * mat,
+ * goog.vec.Mat4.makeRotateZ(goog.vec.Mat4.create(), angle),
+ * mat);
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The matrix.
+ * @param {number} angle The angle in radians.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.rotateZ = function(mat, angle) {
+ var m00 = mat[0], m10 = mat[1], m20 = mat[2], m30 = mat[3];
+ var m01 = mat[4], m11 = mat[5], m21 = mat[6], m31 = mat[7];
+
+ var c = Math.cos(angle);
+ var s = Math.sin(angle);
+
+ mat[0] = m00 * c + m01 * s;
+ mat[1] = m10 * c + m11 * s;
+ mat[2] = m20 * c + m21 * s;
+ mat[3] = m30 * c + m31 * s;
+ mat[4] = m00 * -s + m01 * c;
+ mat[5] = m10 * -s + m11 * c;
+ mat[6] = m20 * -s + m21 * c;
+ mat[7] = m30 * -s + m31 * c;
+
+ return mat;
+};
+
+
+/**
+ * Retrieves the translation component of the transformation matrix.
+ *
+ * @param {goog.vec.Mat4.AnyType} mat The transformation matrix.
+ * @param {goog.vec.Vec3.AnyType} translation The vector for storing the
+ * result.
+ * @return {goog.vec.Mat4.AnyType} return mat so that operations can be
+ * chained.
+ */
+goog.vec.Mat4.getTranslation = function(mat, translation) {
+ translation[0] = mat[12];
+ translation[1] = mat[13];
+ translation[2] = mat[14];
+ return translation;
+};
+
+
+/**
+ * @type {!Array<!goog.vec.Vec3.Type>}
+ * @private
+ */
+goog.vec.Mat4.tmpVec3_ =
+ [goog.vec.Vec3.createFloat64(), goog.vec.Vec3.createFloat64()];
+
+
+/**
+ * @type {!Array<!goog.vec.Vec4.Type>}
+ * @private
+ */
+goog.vec.Mat4.tmpVec4_ = [
+ goog.vec.Vec4.createFloat64(), goog.vec.Vec4.createFloat64(),
+ goog.vec.Vec4.createFloat64()
+];
+
+
+/**
+ * @type {!Array<!goog.vec.Mat4.Type>}
+ * @private
+ */
+goog.vec.Mat4.tmpMat4_ = [goog.vec.Mat4.createFloat64()];
+
+goog.provide('ol.geom.flat.transform');
+
+goog.require('goog.vec.Mat4');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed coordinates.
+ */
+ol.geom.flat.transform.transform2D = function(flatCoordinates, offset, end, stride, transform, opt_dest) {
+ var m00 = goog.vec.Mat4.getElement(transform, 0, 0);
+ var m10 = goog.vec.Mat4.getElement(transform, 1, 0);
+ var m01 = goog.vec.Mat4.getElement(transform, 0, 1);
+ var m11 = goog.vec.Mat4.getElement(transform, 1, 1);
+ var m03 = goog.vec.Mat4.getElement(transform, 0, 3);
+ var m13 = goog.vec.Mat4.getElement(transform, 1, 3);
+ var dest = opt_dest ? opt_dest : [];
+ var i = 0;
+ var j;
+ for (j = offset; j < end; j += stride) {
+ var x = flatCoordinates[j];
+ var y = flatCoordinates[j + 1];
+ dest[i++] = m00 * x + m01 * y + m03;
+ dest[i++] = m10 * x + m11 * y + m13;
+ }
+ if (opt_dest && dest.length != i) {
+ dest.length = i;
+ }
+ return dest;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} angle Angle.
+ * @param {Array.<number>} anchor Rotation anchor point.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed coordinates.
+ */
+ol.geom.flat.transform.rotate = function(flatCoordinates, offset, end, stride, angle, anchor, opt_dest) {
+ var dest = opt_dest ? opt_dest : [];
+ var cos = Math.cos(angle);
+ var sin = Math.sin(angle);
+ var anchorX = anchor[0];
+ var anchorY = anchor[1];
+ var i = 0;
+ for (var j = offset; j < end; j += stride) {
+ var deltaX = flatCoordinates[j] - anchorX;
+ var deltaY = flatCoordinates[j + 1] - anchorY;
+ dest[i++] = anchorX + deltaX * cos - deltaY * sin;
+ dest[i++] = anchorY + deltaX * sin + deltaY * cos;
+ for (var k = j + 2; k < j + stride; ++k) {
+ dest[i++] = flatCoordinates[k];
+ }
+ }
+ if (opt_dest && dest.length != i) {
+ dest.length = i;
+ }
+ return dest;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed coordinates.
+ */
+ol.geom.flat.transform.translate = function(flatCoordinates, offset, end, stride, deltaX, deltaY, opt_dest) {
+ var dest = opt_dest ? opt_dest : [];
+ var i = 0;
+ var j, k;
+ for (j = offset; j < end; j += stride) {
+ dest[i++] = flatCoordinates[j] + deltaX;
+ dest[i++] = flatCoordinates[j + 1] + deltaY;
+ for (k = j + 2; k < j + stride; ++k) {
+ dest[i++] = flatCoordinates[k];
+ }
+ }
+ if (opt_dest && dest.length != i) {
+ dest.length = i;
+ }
+ return dest;
+};
+
+goog.provide('ol.geom.SimpleGeometry');
+
+goog.require('goog.asserts');
+goog.require('ol.functions');
+goog.require('ol.extent');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.flat.transform');
+goog.require('ol.object');
+
+
+/**
+ * @classdesc
+ * Abstract base class; only used for creating subclasses; do not instantiate
+ * in apps, as cannot be rendered.
+ *
+ * @constructor
+ * @extends {ol.geom.Geometry}
+ * @api stable
+ */
+ol.geom.SimpleGeometry = function() {
+
+ ol.geom.Geometry.call(this);
+
+ /**
+ * @protected
+ * @type {ol.geom.GeometryLayout}
+ */
+ this.layout = ol.geom.GeometryLayout.XY;
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.stride = 2;
+
+ /**
+ * @protected
+ * @type {Array.<number>}
+ */
+ this.flatCoordinates = null;
+
+};
+ol.inherits(ol.geom.SimpleGeometry, ol.geom.Geometry);
+
+
+/**
+ * @param {number} stride Stride.
+ * @private
+ * @return {ol.geom.GeometryLayout} layout Layout.
+ */
+ol.geom.SimpleGeometry.getLayoutForStride_ = function(stride) {
+ if (stride == 2) {
+ return ol.geom.GeometryLayout.XY;
+ } else if (stride == 3) {
+ return ol.geom.GeometryLayout.XYZ;
+ } else if (stride == 4) {
+ return ol.geom.GeometryLayout.XYZM;
+ } else {
+ goog.asserts.fail('unsupported stride: ' + stride);
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @return {number} Stride.
+ */
+ol.geom.SimpleGeometry.getStrideForLayout = function(layout) {
+ if (layout == ol.geom.GeometryLayout.XY) {
+ return 2;
+ } else if (layout == ol.geom.GeometryLayout.XYZ) {
+ return 3;
+ } else if (layout == ol.geom.GeometryLayout.XYM) {
+ return 3;
+ } else if (layout == ol.geom.GeometryLayout.XYZM) {
+ return 4;
+ } else {
+ goog.asserts.fail('unsupported layout: ' + layout);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.SimpleGeometry.prototype.containsXY = ol.functions.FALSE;
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.SimpleGeometry.prototype.computeExtent = function(extent) {
+ return ol.extent.createOrUpdateFromFlatCoordinates(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ extent);
+};
+
+
+/**
+ * @return {Array} Coordinates.
+ */
+ol.geom.SimpleGeometry.prototype.getCoordinates = goog.abstractMethod;
+
+
+/**
+ * Return the first coordinate of the geometry.
+ * @return {ol.Coordinate} First coordinate.
+ * @api stable
+ */
+ol.geom.SimpleGeometry.prototype.getFirstCoordinate = function() {
+ return this.flatCoordinates.slice(0, this.stride);
+};
+
+
+/**
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.geom.SimpleGeometry.prototype.getFlatCoordinates = function() {
+ return this.flatCoordinates;
+};
+
+
+/**
+ * Return the last coordinate of the geometry.
+ * @return {ol.Coordinate} Last point.
+ * @api stable
+ */
+ol.geom.SimpleGeometry.prototype.getLastCoordinate = function() {
+ return this.flatCoordinates.slice(this.flatCoordinates.length - this.stride);
+};
+
+
+/**
+ * Return the {@link ol.geom.GeometryLayout layout} of the geometry.
+ * @return {ol.geom.GeometryLayout} Layout.
+ * @api stable
+ */
+ol.geom.SimpleGeometry.prototype.getLayout = function() {
+ return this.layout;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.SimpleGeometry.prototype.getSimplifiedGeometry = function(squaredTolerance) {
+ if (this.simplifiedGeometryRevision != this.getRevision()) {
+ ol.object.clear(this.simplifiedGeometryCache);
+ this.simplifiedGeometryMaxMinSquaredTolerance = 0;
+ this.simplifiedGeometryRevision = this.getRevision();
+ }
+ // If squaredTolerance is negative or if we know that simplification will not
+ // have any effect then just return this.
+ if (squaredTolerance < 0 ||
+ (this.simplifiedGeometryMaxMinSquaredTolerance !== 0 &&
+ squaredTolerance <= this.simplifiedGeometryMaxMinSquaredTolerance)) {
+ return this;
+ }
+ var key = squaredTolerance.toString();
+ if (this.simplifiedGeometryCache.hasOwnProperty(key)) {
+ return this.simplifiedGeometryCache[key];
+ } else {
+ var simplifiedGeometry =
+ this.getSimplifiedGeometryInternal(squaredTolerance);
+ var simplifiedFlatCoordinates = simplifiedGeometry.getFlatCoordinates();
+ if (simplifiedFlatCoordinates.length < this.flatCoordinates.length) {
+ this.simplifiedGeometryCache[key] = simplifiedGeometry;
+ return simplifiedGeometry;
+ } else {
+ // Simplification did not actually remove any coordinates. We now know
+ // that any calls to getSimplifiedGeometry with a squaredTolerance less
+ // than or equal to the current squaredTolerance will also not have any
+ // effect. This allows us to short circuit simplification (saving CPU
+ // cycles) and prevents the cache of simplified geometries from filling
+ // up with useless identical copies of this geometry (saving memory).
+ this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance;
+ return this;
+ }
+ }
+};
+
+
+/**
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {ol.geom.SimpleGeometry} Simplified geometry.
+ * @protected
+ */
+ol.geom.SimpleGeometry.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ return this;
+};
+
+
+/**
+ * @return {number} Stride.
+ */
+ol.geom.SimpleGeometry.prototype.getStride = function() {
+ return this.stride;
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @protected
+ */
+ol.geom.SimpleGeometry.prototype.setFlatCoordinatesInternal = function(layout, flatCoordinates) {
+ this.stride = ol.geom.SimpleGeometry.getStrideForLayout(layout);
+ this.layout = layout;
+ this.flatCoordinates = flatCoordinates;
+};
+
+
+/**
+ * @param {Array} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ */
+ol.geom.SimpleGeometry.prototype.setCoordinates = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.GeometryLayout|undefined} layout Layout.
+ * @param {Array} coordinates Coordinates.
+ * @param {number} nesting Nesting.
+ * @protected
+ */
+ol.geom.SimpleGeometry.prototype.setLayout = function(layout, coordinates, nesting) {
+ /** @type {number} */
+ var stride;
+ if (layout) {
+ stride = ol.geom.SimpleGeometry.getStrideForLayout(layout);
+ } else {
+ var i;
+ for (i = 0; i < nesting; ++i) {
+ if (coordinates.length === 0) {
+ this.layout = ol.geom.GeometryLayout.XY;
+ this.stride = 2;
+ return;
+ } else {
+ coordinates = /** @type {Array} */ (coordinates[0]);
+ }
+ }
+ stride = coordinates.length;
+ layout = ol.geom.SimpleGeometry.getLayoutForStride_(stride);
+ }
+ this.layout = layout;
+ this.stride = stride;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.SimpleGeometry.prototype.applyTransform = function(transformFn) {
+ if (this.flatCoordinates) {
+ transformFn(this.flatCoordinates, this.flatCoordinates, this.stride);
+ this.changed();
+ }
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.geom.SimpleGeometry.prototype.rotate = function(angle, anchor) {
+ var flatCoordinates = this.getFlatCoordinates();
+ if (flatCoordinates) {
+ var stride = this.getStride();
+ ol.geom.flat.transform.rotate(
+ flatCoordinates, 0, flatCoordinates.length,
+ stride, angle, anchor, flatCoordinates);
+ this.changed();
+ }
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.SimpleGeometry.prototype.translate = function(deltaX, deltaY) {
+ var flatCoordinates = this.getFlatCoordinates();
+ if (flatCoordinates) {
+ var stride = this.getStride();
+ ol.geom.flat.transform.translate(
+ flatCoordinates, 0, flatCoordinates.length, stride,
+ deltaX, deltaY, flatCoordinates);
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.SimpleGeometry} simpleGeometry Simple geometry.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed flat coordinates.
+ */
+ol.geom.transformSimpleGeometry2D = function(simpleGeometry, transform, opt_dest) {
+ var flatCoordinates = simpleGeometry.getFlatCoordinates();
+ if (!flatCoordinates) {
+ return null;
+ } else {
+ var stride = simpleGeometry.getStride();
+ return ol.geom.flat.transform.transform2D(
+ flatCoordinates, 0, flatCoordinates.length, stride,
+ transform, opt_dest);
+ }
+};
+
+goog.provide('ol.geom.flat.area');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+ol.geom.flat.area.linearRing = function(flatCoordinates, offset, end, stride) {
+ var twiceArea = 0;
+ var x1 = flatCoordinates[end - stride];
+ var y1 = flatCoordinates[end - stride + 1];
+ for (; offset < end; offset += stride) {
+ var x2 = flatCoordinates[offset];
+ var y2 = flatCoordinates[offset + 1];
+ twiceArea += y1 * x2 - x1 * y2;
+ x1 = x2;
+ y1 = y2;
+ }
+ return twiceArea / 2;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+ol.geom.flat.area.linearRings = function(flatCoordinates, offset, ends, stride) {
+ var area = 0;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ area += ol.geom.flat.area.linearRing(flatCoordinates, offset, end, stride);
+ offset = end;
+ }
+ return area;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+ol.geom.flat.area.linearRingss = function(flatCoordinates, offset, endss, stride) {
+ var area = 0;
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ area +=
+ ol.geom.flat.area.linearRings(flatCoordinates, offset, ends, stride);
+ offset = ends[ends.length - 1];
+ }
+ return area;
+};
+
+goog.provide('ol.geom.flat.closest');
+
+goog.require('goog.asserts');
+goog.require('ol.math');
+
+
+/**
+ * Returns the point on the 2D line segment flatCoordinates[offset1] to
+ * flatCoordinates[offset2] that is closest to the point (x, y). Extra
+ * dimensions are linearly interpolated.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset1 Offset 1.
+ * @param {number} offset2 Offset 2.
+ * @param {number} stride Stride.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {Array.<number>} closestPoint Closest point.
+ */
+ol.geom.flat.closest.point = function(flatCoordinates, offset1, offset2, stride, x, y, closestPoint) {
+ var x1 = flatCoordinates[offset1];
+ var y1 = flatCoordinates[offset1 + 1];
+ var dx = flatCoordinates[offset2] - x1;
+ var dy = flatCoordinates[offset2 + 1] - y1;
+ var i, offset;
+ if (dx === 0 && dy === 0) {
+ offset = offset1;
+ } else {
+ var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);
+ if (t > 1) {
+ offset = offset2;
+ } else if (t > 0) {
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = ol.math.lerp(flatCoordinates[offset1 + i],
+ flatCoordinates[offset2 + i], t);
+ }
+ closestPoint.length = stride;
+ return;
+ } else {
+ offset = offset1;
+ }
+ }
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = flatCoordinates[offset + i];
+ }
+ closestPoint.length = stride;
+};
+
+
+/**
+ * Return the squared of the largest distance between any pair of consecutive
+ * coordinates.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} maxSquaredDelta Max squared delta.
+ * @return {number} Max squared delta.
+ */
+ol.geom.flat.closest.getMaxSquaredDelta = function(flatCoordinates, offset, end, stride, maxSquaredDelta) {
+ var x1 = flatCoordinates[offset];
+ var y1 = flatCoordinates[offset + 1];
+ for (offset += stride; offset < end; offset += stride) {
+ var x2 = flatCoordinates[offset];
+ var y2 = flatCoordinates[offset + 1];
+ var squaredDelta = ol.math.squaredDistance(x1, y1, x2, y2);
+ if (squaredDelta > maxSquaredDelta) {
+ maxSquaredDelta = squaredDelta;
+ }
+ x1 = x2;
+ y1 = y2;
+ }
+ return maxSquaredDelta;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} maxSquaredDelta Max squared delta.
+ * @return {number} Max squared delta.
+ */
+ol.geom.flat.closest.getsMaxSquaredDelta = function(flatCoordinates, offset, ends, stride, maxSquaredDelta) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ maxSquaredDelta = ol.geom.flat.closest.getMaxSquaredDelta(
+ flatCoordinates, offset, end, stride, maxSquaredDelta);
+ offset = end;
+ }
+ return maxSquaredDelta;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {number} maxSquaredDelta Max squared delta.
+ * @return {number} Max squared delta.
+ */
+ol.geom.flat.closest.getssMaxSquaredDelta = function(flatCoordinates, offset, endss, stride, maxSquaredDelta) {
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ maxSquaredDelta = ol.geom.flat.closest.getsMaxSquaredDelta(
+ flatCoordinates, offset, ends, stride, maxSquaredDelta);
+ offset = ends[ends.length - 1];
+ }
+ return maxSquaredDelta;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} maxDelta Max delta.
+ * @param {boolean} isRing Is ring.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {Array.<number>} closestPoint Closest point.
+ * @param {number} minSquaredDistance Minimum squared distance.
+ * @param {Array.<number>=} opt_tmpPoint Temporary point object.
+ * @return {number} Minimum squared distance.
+ */
+ol.geom.flat.closest.getClosestPoint = function(flatCoordinates, offset, end,
+ stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,
+ opt_tmpPoint) {
+ if (offset == end) {
+ return minSquaredDistance;
+ }
+ var i, squaredDistance;
+ if (maxDelta === 0) {
+ // All points are identical, so just test the first point.
+ squaredDistance = ol.math.squaredDistance(
+ x, y, flatCoordinates[offset], flatCoordinates[offset + 1]);
+ if (squaredDistance < minSquaredDistance) {
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = flatCoordinates[offset + i];
+ }
+ closestPoint.length = stride;
+ return squaredDistance;
+ } else {
+ return minSquaredDistance;
+ }
+ }
+ goog.asserts.assert(maxDelta > 0, 'maxDelta should be larger than 0');
+ var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];
+ var index = offset + stride;
+ while (index < end) {
+ ol.geom.flat.closest.point(
+ flatCoordinates, index - stride, index, stride, x, y, tmpPoint);
+ squaredDistance = ol.math.squaredDistance(x, y, tmpPoint[0], tmpPoint[1]);
+ if (squaredDistance < minSquaredDistance) {
+ minSquaredDistance = squaredDistance;
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = tmpPoint[i];
+ }
+ closestPoint.length = stride;
+ index += stride;
+ } else {
+ // Skip ahead multiple points, because we know that all the skipped
+ // points cannot be any closer than the closest point we have found so
+ // far. We know this because we know how close the current point is, how
+ // close the closest point we have found so far is, and the maximum
+ // distance between consecutive points. For example, if we're currently
+ // at distance 10, the best we've found so far is 3, and that the maximum
+ // distance between consecutive points is 2, then we'll need to skip at
+ // least (10 - 3) / 2 == 3 (rounded down) points to have any chance of
+ // finding a closer point. We use Math.max(..., 1) to ensure that we
+ // always advance at least one point, to avoid an infinite loop.
+ index += stride * Math.max(
+ ((Math.sqrt(squaredDistance) -
+ Math.sqrt(minSquaredDistance)) / maxDelta) | 0, 1);
+ }
+ }
+ if (isRing) {
+ // Check the closing segment.
+ ol.geom.flat.closest.point(
+ flatCoordinates, end - stride, offset, stride, x, y, tmpPoint);
+ squaredDistance = ol.math.squaredDistance(x, y, tmpPoint[0], tmpPoint[1]);
+ if (squaredDistance < minSquaredDistance) {
+ minSquaredDistance = squaredDistance;
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = tmpPoint[i];
+ }
+ closestPoint.length = stride;
+ }
+ }
+ return minSquaredDistance;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} maxDelta Max delta.
+ * @param {boolean} isRing Is ring.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {Array.<number>} closestPoint Closest point.
+ * @param {number} minSquaredDistance Minimum squared distance.
+ * @param {Array.<number>=} opt_tmpPoint Temporary point object.
+ * @return {number} Minimum squared distance.
+ */
+ol.geom.flat.closest.getsClosestPoint = function(flatCoordinates, offset, ends,
+ stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,
+ opt_tmpPoint) {
+ var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ minSquaredDistance = ol.geom.flat.closest.getClosestPoint(
+ flatCoordinates, offset, end, stride,
+ maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);
+ offset = end;
+ }
+ return minSquaredDistance;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {number} maxDelta Max delta.
+ * @param {boolean} isRing Is ring.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {Array.<number>} closestPoint Closest point.
+ * @param {number} minSquaredDistance Minimum squared distance.
+ * @param {Array.<number>=} opt_tmpPoint Temporary point object.
+ * @return {number} Minimum squared distance.
+ */
+ol.geom.flat.closest.getssClosestPoint = function(flatCoordinates, offset,
+ endss, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,
+ opt_tmpPoint) {
+ var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ minSquaredDistance = ol.geom.flat.closest.getsClosestPoint(
+ flatCoordinates, offset, ends, stride,
+ maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);
+ offset = ends[ends.length - 1];
+ }
+ return minSquaredDistance;
+};
+
+goog.provide('ol.geom.flat.deflate');
+
+goog.require('goog.asserts');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} stride Stride.
+ * @return {number} offset Offset.
+ */
+ol.geom.flat.deflate.coordinate = function(flatCoordinates, offset, coordinate, stride) {
+ goog.asserts.assert(coordinate.length == stride,
+ 'length of the coordinate array should match stride');
+ var i, ii;
+ for (i = 0, ii = coordinate.length; i < ii; ++i) {
+ flatCoordinates[offset++] = coordinate[i];
+ }
+ return offset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {number} stride Stride.
+ * @return {number} offset Offset.
+ */
+ol.geom.flat.deflate.coordinates = function(flatCoordinates, offset, coordinates, stride) {
+ var i, ii;
+ for (i = 0, ii = coordinates.length; i < ii; ++i) {
+ var coordinate = coordinates[i];
+ goog.asserts.assert(coordinate.length == stride,
+ 'length of coordinate array should match stride');
+ var j;
+ for (j = 0; j < stride; ++j) {
+ flatCoordinates[offset++] = coordinate[j];
+ }
+ }
+ return offset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<ol.Coordinate>>} coordinatess Coordinatess.
+ * @param {number} stride Stride.
+ * @param {Array.<number>=} opt_ends Ends.
+ * @return {Array.<number>} Ends.
+ */
+ol.geom.flat.deflate.coordinatess = function(flatCoordinates, offset, coordinatess, stride, opt_ends) {
+ var ends = opt_ends ? opt_ends : [];
+ var i = 0;
+ var j, jj;
+ for (j = 0, jj = coordinatess.length; j < jj; ++j) {
+ var end = ol.geom.flat.deflate.coordinates(
+ flatCoordinates, offset, coordinatess[j], stride);
+ ends[i++] = end;
+ offset = end;
+ }
+ ends.length = i;
+ return ends;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinatesss Coordinatesss.
+ * @param {number} stride Stride.
+ * @param {Array.<Array.<number>>=} opt_endss Endss.
+ * @return {Array.<Array.<number>>} Endss.
+ */
+ol.geom.flat.deflate.coordinatesss = function(flatCoordinates, offset, coordinatesss, stride, opt_endss) {
+ var endss = opt_endss ? opt_endss : [];
+ var i = 0;
+ var j, jj;
+ for (j = 0, jj = coordinatesss.length; j < jj; ++j) {
+ var ends = ol.geom.flat.deflate.coordinatess(
+ flatCoordinates, offset, coordinatesss[j], stride, endss[i]);
+ endss[i++] = ends;
+ offset = ends[ends.length - 1];
+ }
+ endss.length = i;
+ return endss;
+};
+
+goog.provide('ol.geom.flat.inflate');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {Array.<ol.Coordinate>=} opt_coordinates Coordinates.
+ * @return {Array.<ol.Coordinate>} Coordinates.
+ */
+ol.geom.flat.inflate.coordinates = function(flatCoordinates, offset, end, stride, opt_coordinates) {
+ var coordinates = opt_coordinates !== undefined ? opt_coordinates : [];
+ var i = 0;
+ var j;
+ for (j = offset; j < end; j += stride) {
+ coordinates[i++] = flatCoordinates.slice(j, j + stride);
+ }
+ coordinates.length = i;
+ return coordinates;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {Array.<Array.<ol.Coordinate>>=} opt_coordinatess Coordinatess.
+ * @return {Array.<Array.<ol.Coordinate>>} Coordinatess.
+ */
+ol.geom.flat.inflate.coordinatess = function(flatCoordinates, offset, ends, stride, opt_coordinatess) {
+ var coordinatess = opt_coordinatess !== undefined ? opt_coordinatess : [];
+ var i = 0;
+ var j, jj;
+ for (j = 0, jj = ends.length; j < jj; ++j) {
+ var end = ends[j];
+ coordinatess[i++] = ol.geom.flat.inflate.coordinates(
+ flatCoordinates, offset, end, stride, coordinatess[i]);
+ offset = end;
+ }
+ coordinatess.length = i;
+ return coordinatess;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {Array.<Array.<Array.<ol.Coordinate>>>=} opt_coordinatesss
+ * Coordinatesss.
+ * @return {Array.<Array.<Array.<ol.Coordinate>>>} Coordinatesss.
+ */
+ol.geom.flat.inflate.coordinatesss = function(flatCoordinates, offset, endss, stride, opt_coordinatesss) {
+ var coordinatesss = opt_coordinatesss !== undefined ? opt_coordinatesss : [];
+ var i = 0;
+ var j, jj;
+ for (j = 0, jj = endss.length; j < jj; ++j) {
+ var ends = endss[j];
+ coordinatesss[i++] = ol.geom.flat.inflate.coordinatess(
+ flatCoordinates, offset, ends, stride, coordinatesss[i]);
+ offset = ends[ends.length - 1];
+ }
+ coordinatesss.length = i;
+ return coordinatesss;
+};
+
+// Based on simplify-js https://github.com/mourner/simplify-js
+// Copyright (c) 2012, Vladimir Agafonkin
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.geom.flat.simplify');
+
+goog.require('ol.math');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {boolean} highQuality Highest quality.
+ * @param {Array.<number>=} opt_simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @return {Array.<number>} Simplified line string.
+ */
+ol.geom.flat.simplify.lineString = function(flatCoordinates, offset, end,
+ stride, squaredTolerance, highQuality, opt_simplifiedFlatCoordinates) {
+ var simplifiedFlatCoordinates = opt_simplifiedFlatCoordinates !== undefined ?
+ opt_simplifiedFlatCoordinates : [];
+ if (!highQuality) {
+ end = ol.geom.flat.simplify.radialDistance(flatCoordinates, offset, end,
+ stride, squaredTolerance,
+ simplifiedFlatCoordinates, 0);
+ flatCoordinates = simplifiedFlatCoordinates;
+ offset = 0;
+ stride = 2;
+ }
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeucker(
+ flatCoordinates, offset, end, stride, squaredTolerance,
+ simplifiedFlatCoordinates, 0);
+ return simplifiedFlatCoordinates;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.douglasPeucker = function(flatCoordinates, offset, end,
+ stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {
+ var n = (end - offset) / stride;
+ if (n < 3) {
+ for (; offset < end; offset += stride) {
+ simplifiedFlatCoordinates[simplifiedOffset++] =
+ flatCoordinates[offset];
+ simplifiedFlatCoordinates[simplifiedOffset++] =
+ flatCoordinates[offset + 1];
+ }
+ return simplifiedOffset;
+ }
+ /** @type {Array.<number>} */
+ var markers = new Array(n);
+ markers[0] = 1;
+ markers[n - 1] = 1;
+ /** @type {Array.<number>} */
+ var stack = [offset, end - stride];
+ var index = 0;
+ var i;
+ while (stack.length > 0) {
+ var last = stack.pop();
+ var first = stack.pop();
+ var maxSquaredDistance = 0;
+ var x1 = flatCoordinates[first];
+ var y1 = flatCoordinates[first + 1];
+ var x2 = flatCoordinates[last];
+ var y2 = flatCoordinates[last + 1];
+ for (i = first + stride; i < last; i += stride) {
+ var x = flatCoordinates[i];
+ var y = flatCoordinates[i + 1];
+ var squaredDistance = ol.math.squaredSegmentDistance(
+ x, y, x1, y1, x2, y2);
+ if (squaredDistance > maxSquaredDistance) {
+ index = i;
+ maxSquaredDistance = squaredDistance;
+ }
+ }
+ if (maxSquaredDistance > squaredTolerance) {
+ markers[(index - offset) / stride] = 1;
+ if (first + stride < index) {
+ stack.push(first, index);
+ }
+ if (index + stride < last) {
+ stack.push(index, last);
+ }
+ }
+ }
+ for (i = 0; i < n; ++i) {
+ if (markers[i]) {
+ simplifiedFlatCoordinates[simplifiedOffset++] =
+ flatCoordinates[offset + i * stride];
+ simplifiedFlatCoordinates[simplifiedOffset++] =
+ flatCoordinates[offset + i * stride + 1];
+ }
+ }
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @param {Array.<number>} simplifiedEnds Simplified ends.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.douglasPeuckers = function(flatCoordinates, offset,
+ ends, stride, squaredTolerance, simplifiedFlatCoordinates,
+ simplifiedOffset, simplifiedEnds) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ simplifiedOffset = ol.geom.flat.simplify.douglasPeucker(
+ flatCoordinates, offset, end, stride, squaredTolerance,
+ simplifiedFlatCoordinates, simplifiedOffset);
+ simplifiedEnds.push(simplifiedOffset);
+ offset = end;
+ }
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @param {Array.<Array.<number>>} simplifiedEndss Simplified endss.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.douglasPeuckerss = function(
+ flatCoordinates, offset, endss, stride, squaredTolerance,
+ simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ var simplifiedEnds = [];
+ simplifiedOffset = ol.geom.flat.simplify.douglasPeuckers(
+ flatCoordinates, offset, ends, stride, squaredTolerance,
+ simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);
+ simplifiedEndss.push(simplifiedEnds);
+ offset = ends[ends.length - 1];
+ }
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.radialDistance = function(flatCoordinates, offset, end,
+ stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {
+ if (end <= offset + stride) {
+ // zero or one point, no simplification possible, so copy and return
+ for (; offset < end; offset += stride) {
+ simplifiedFlatCoordinates[simplifiedOffset++] = flatCoordinates[offset];
+ simplifiedFlatCoordinates[simplifiedOffset++] =
+ flatCoordinates[offset + 1];
+ }
+ return simplifiedOffset;
+ }
+ var x1 = flatCoordinates[offset];
+ var y1 = flatCoordinates[offset + 1];
+ // copy first point
+ simplifiedFlatCoordinates[simplifiedOffset++] = x1;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y1;
+ var x2 = x1;
+ var y2 = y1;
+ for (offset += stride; offset < end; offset += stride) {
+ x2 = flatCoordinates[offset];
+ y2 = flatCoordinates[offset + 1];
+ if (ol.math.squaredDistance(x1, y1, x2, y2) > squaredTolerance) {
+ // copy point at offset
+ simplifiedFlatCoordinates[simplifiedOffset++] = x2;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y2;
+ x1 = x2;
+ y1 = y2;
+ }
+ }
+ if (x2 != x1 || y2 != y1) {
+ // copy last point
+ simplifiedFlatCoordinates[simplifiedOffset++] = x2;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y2;
+ }
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {number} value Value.
+ * @param {number} tolerance Tolerance.
+ * @return {number} Rounded value.
+ */
+ol.geom.flat.simplify.snap = function(value, tolerance) {
+ return tolerance * Math.round(value / tolerance);
+};
+
+
+/**
+ * Simplifies a line string using an algorithm designed by Tim Schaub.
+ * Coordinates are snapped to the nearest value in a virtual grid and
+ * consecutive duplicate coordinates are discarded. This effectively preserves
+ * topology as the simplification of any subsection of a line string is
+ * independent of the rest of the line string. This means that, for examples,
+ * the common edge between two polygons will be simplified to the same line
+ * string independently in both polygons. This implementation uses a single
+ * pass over the coordinates and eliminates intermediate collinear points.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} tolerance Tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.quantize = function(flatCoordinates, offset, end, stride,
+ tolerance, simplifiedFlatCoordinates, simplifiedOffset) {
+ // do nothing if the line is empty
+ if (offset == end) {
+ return simplifiedOffset;
+ }
+ // snap the first coordinate (P1)
+ var x1 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
+ var y1 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
+ offset += stride;
+ // add the first coordinate to the output
+ simplifiedFlatCoordinates[simplifiedOffset++] = x1;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y1;
+ // find the next coordinate that does not snap to the same value as the first
+ // coordinate (P2)
+ var x2, y2;
+ do {
+ x2 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
+ y2 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
+ offset += stride;
+ if (offset == end) {
+ // all coordinates snap to the same value, the line collapses to a point
+ // push the last snapped value anyway to ensure that the output contains
+ // at least two points
+ // FIXME should we really return at least two points anyway?
+ simplifiedFlatCoordinates[simplifiedOffset++] = x2;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y2;
+ return simplifiedOffset;
+ }
+ } while (x2 == x1 && y2 == y1);
+ while (offset < end) {
+ var x3, y3;
+ // snap the next coordinate (P3)
+ x3 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
+ y3 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
+ offset += stride;
+ // skip P3 if it is equal to P2
+ if (x3 == x2 && y3 == y2) {
+ continue;
+ }
+ // calculate the delta between P1 and P2
+ var dx1 = x2 - x1;
+ var dy1 = y2 - y1;
+ // calculate the delta between P3 and P1
+ var dx2 = x3 - x1;
+ var dy2 = y3 - y1;
+ // if P1, P2, and P3 are colinear and P3 is further from P1 than P2 is from
+ // P1 in the same direction then P2 is on the straight line between P1 and
+ // P3
+ if ((dx1 * dy2 == dy1 * dx2) &&
+ ((dx1 < 0 && dx2 < dx1) || dx1 == dx2 || (dx1 > 0 && dx2 > dx1)) &&
+ ((dy1 < 0 && dy2 < dy1) || dy1 == dy2 || (dy1 > 0 && dy2 > dy1))) {
+ // discard P2 and set P2 = P3
+ x2 = x3;
+ y2 = y3;
+ continue;
+ }
+ // either P1, P2, and P3 are not colinear, or they are colinear but P3 is
+ // between P3 and P1 or on the opposite half of the line to P2. add P2,
+ // and continue with P1 = P2 and P2 = P3
+ simplifiedFlatCoordinates[simplifiedOffset++] = x2;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y2;
+ x1 = x2;
+ y1 = y2;
+ x2 = x3;
+ y2 = y3;
+ }
+ // add the last point (P2)
+ simplifiedFlatCoordinates[simplifiedOffset++] = x2;
+ simplifiedFlatCoordinates[simplifiedOffset++] = y2;
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} tolerance Tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @param {Array.<number>} simplifiedEnds Simplified ends.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.quantizes = function(
+ flatCoordinates, offset, ends, stride,
+ tolerance,
+ simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ simplifiedOffset = ol.geom.flat.simplify.quantize(
+ flatCoordinates, offset, end, stride,
+ tolerance,
+ simplifiedFlatCoordinates, simplifiedOffset);
+ simplifiedEnds.push(simplifiedOffset);
+ offset = end;
+ }
+ return simplifiedOffset;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {number} tolerance Tolerance.
+ * @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
+ * coordinates.
+ * @param {number} simplifiedOffset Simplified offset.
+ * @param {Array.<Array.<number>>} simplifiedEndss Simplified endss.
+ * @return {number} Simplified offset.
+ */
+ol.geom.flat.simplify.quantizess = function(
+ flatCoordinates, offset, endss, stride,
+ tolerance,
+ simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ var simplifiedEnds = [];
+ simplifiedOffset = ol.geom.flat.simplify.quantizes(
+ flatCoordinates, offset, ends, stride,
+ tolerance,
+ simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);
+ simplifiedEndss.push(simplifiedEnds);
+ offset = ends[ends.length - 1];
+ }
+ return simplifiedOffset;
+};
+
+goog.provide('ol.geom.LinearRing');
+
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.area');
+goog.require('ol.geom.flat.closest');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.geom.flat.simplify');
+
+
+/**
+ * @classdesc
+ * Linear ring geometry. Only used as part of polygon; cannot be rendered
+ * on its own.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.LinearRing = function(coordinates, opt_layout) {
+
+ ol.geom.SimpleGeometry.call(this);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDelta_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDeltaRevision_ = -1;
+
+ this.setCoordinates(coordinates, opt_layout);
+
+};
+ol.inherits(ol.geom.LinearRing, ol.geom.SimpleGeometry);
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.LinearRing} Clone.
+ * @api stable
+ */
+ol.geom.LinearRing.prototype.clone = function() {
+ var linearRing = new ol.geom.LinearRing(null);
+ linearRing.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
+ return linearRing;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.LinearRing.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ if (this.maxDeltaRevision_ != this.getRevision()) {
+ this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getMaxSquaredDelta(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));
+ this.maxDeltaRevision_ = this.getRevision();
+ }
+ return ol.geom.flat.closest.getClosestPoint(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
+};
+
+
+/**
+ * Return the area of the linear ring on projected plane.
+ * @return {number} Area (on projected plane).
+ * @api stable
+ */
+ol.geom.LinearRing.prototype.getArea = function() {
+ return ol.geom.flat.area.linearRing(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
+};
+
+
+/**
+ * Return the coordinates of the linear ring.
+ * @return {Array.<ol.Coordinate>} Coordinates.
+ * @api stable
+ */
+ol.geom.LinearRing.prototype.getCoordinates = function() {
+ return ol.geom.flat.inflate.coordinates(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.LinearRing.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ var simplifiedFlatCoordinates = [];
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeucker(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ squaredTolerance, simplifiedFlatCoordinates, 0);
+ var simplifiedLinearRing = new ol.geom.LinearRing(null);
+ simplifiedLinearRing.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates);
+ return simplifiedLinearRing;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.LinearRing.prototype.getType = function() {
+ return ol.geom.GeometryType.LINEAR_RING;
+};
+
+
+/**
+ * Set the coordinates of the linear ring.
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.LinearRing.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
+ } else {
+ this.setLayout(opt_layout, coordinates, 1);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ this.flatCoordinates.length = ol.geom.flat.deflate.coordinates(
+ this.flatCoordinates, 0, coordinates, this.stride);
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ */
+ol.geom.LinearRing.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.changed();
+};
+
+goog.provide('ol.geom.Point');
+
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * Point geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {ol.Coordinate} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.Point = function(coordinates, opt_layout) {
+ ol.geom.SimpleGeometry.call(this);
+ this.setCoordinates(coordinates, opt_layout);
+};
+ol.inherits(ol.geom.Point, ol.geom.SimpleGeometry);
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Point} Clone.
+ * @api stable
+ */
+ol.geom.Point.prototype.clone = function() {
+ var point = new ol.geom.Point(null);
+ point.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
+ return point;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Point.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ var flatCoordinates = this.flatCoordinates;
+ var squaredDistance = ol.math.squaredDistance(
+ x, y, flatCoordinates[0], flatCoordinates[1]);
+ if (squaredDistance < minSquaredDistance) {
+ var stride = this.stride;
+ var i;
+ for (i = 0; i < stride; ++i) {
+ closestPoint[i] = flatCoordinates[i];
+ }
+ closestPoint.length = stride;
+ return squaredDistance;
+ } else {
+ return minSquaredDistance;
+ }
+};
+
+
+/**
+ * Return the coordinate of the point.
+ * @return {ol.Coordinate} Coordinates.
+ * @api stable
+ */
+ol.geom.Point.prototype.getCoordinates = function() {
+ return !this.flatCoordinates ? [] : this.flatCoordinates.slice();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Point.prototype.computeExtent = function(extent) {
+ return ol.extent.createOrUpdateFromCoordinate(this.flatCoordinates, extent);
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.Point.prototype.getType = function() {
+ return ol.geom.GeometryType.POINT;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.Point.prototype.intersectsExtent = function(extent) {
+ return ol.extent.containsXY(extent,
+ this.flatCoordinates[0], this.flatCoordinates[1]);
+};
+
+
+/**
+ * Set the coordinate of the point.
+ * @param {ol.Coordinate} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.Point.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
+ } else {
+ this.setLayout(opt_layout, coordinates, 0);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ this.flatCoordinates.length = ol.geom.flat.deflate.coordinate(
+ this.flatCoordinates, 0, coordinates, this.stride);
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ */
+ol.geom.Point.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.changed();
+};
+
+goog.provide('ol.geom.flat.contains');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} Contains extent.
+ */
+ol.geom.flat.contains.linearRingContainsExtent = function(flatCoordinates, offset, end, stride, extent) {
+ var outside = ol.extent.forEachCorner(extent,
+ /**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {boolean} Contains (x, y).
+ */
+ function(coordinate) {
+ return !ol.geom.flat.contains.linearRingContainsXY(flatCoordinates,
+ offset, end, stride, coordinate[0], coordinate[1]);
+ });
+ return !outside;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {boolean} Contains (x, y).
+ */
+ol.geom.flat.contains.linearRingContainsXY = function(flatCoordinates, offset, end, stride, x, y) {
+ // http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html
+ var contains = false;
+ var x1 = flatCoordinates[end - stride];
+ var y1 = flatCoordinates[end - stride + 1];
+ for (; offset < end; offset += stride) {
+ var x2 = flatCoordinates[offset];
+ var y2 = flatCoordinates[offset + 1];
+ var intersect = ((y1 > y) != (y2 > y)) &&
+ (x < (x2 - x1) * (y - y1) / (y2 - y1) + x1);
+ if (intersect) {
+ contains = !contains;
+ }
+ x1 = x2;
+ y1 = y2;
+ }
+ return contains;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {boolean} Contains (x, y).
+ */
+ol.geom.flat.contains.linearRingsContainsXY = function(flatCoordinates, offset, ends, stride, x, y) {
+ goog.asserts.assert(ends.length > 0, 'ends should not be an empty array');
+ if (ends.length === 0) {
+ return false;
+ }
+ if (!ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, offset, ends[0], stride, x, y)) {
+ return false;
+ }
+ var i, ii;
+ for (i = 1, ii = ends.length; i < ii; ++i) {
+ if (ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, ends[i - 1], ends[i], stride, x, y)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {boolean} Contains (x, y).
+ */
+ol.geom.flat.contains.linearRingssContainsXY = function(flatCoordinates, offset, endss, stride, x, y) {
+ goog.asserts.assert(endss.length > 0, 'endss should not be an empty array');
+ if (endss.length === 0) {
+ return false;
+ }
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ if (ol.geom.flat.contains.linearRingsContainsXY(
+ flatCoordinates, offset, ends, stride, x, y)) {
+ return true;
+ }
+ offset = ends[ends.length - 1];
+ }
+ return false;
+};
+
+goog.provide('ol.geom.flat.interiorpoint');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.geom.flat.contains');
+
+
+/**
+ * Calculates a point that is likely to lie in the interior of the linear rings.
+ * Inspired by JTS's com.vividsolutions.jts.geom.Geometry#getInteriorPoint.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {Array.<number>} flatCenters Flat centers.
+ * @param {number} flatCentersOffset Flat center offset.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Destination.
+ */
+ol.geom.flat.interiorpoint.linearRings = function(flatCoordinates, offset,
+ ends, stride, flatCenters, flatCentersOffset, opt_dest) {
+ var i, ii, x, x1, x2, y1, y2;
+ var y = flatCenters[flatCentersOffset + 1];
+ /** @type {Array.<number>} */
+ var intersections = [];
+ // Calculate intersections with the horizontal line
+ var end = ends[0];
+ x1 = flatCoordinates[end - stride];
+ y1 = flatCoordinates[end - stride + 1];
+ for (i = offset; i < end; i += stride) {
+ x2 = flatCoordinates[i];
+ y2 = flatCoordinates[i + 1];
+ if ((y <= y1 && y2 <= y) || (y1 <= y && y <= y2)) {
+ x = (y - y1) / (y2 - y1) * (x2 - x1) + x1;
+ intersections.push(x);
+ }
+ x1 = x2;
+ y1 = y2;
+ }
+ // Find the longest segment of the horizontal line that has its center point
+ // inside the linear ring.
+ var pointX = NaN;
+ var maxSegmentLength = -Infinity;
+ intersections.sort(ol.array.numberSafeCompareFunction);
+ x1 = intersections[0];
+ for (i = 1, ii = intersections.length; i < ii; ++i) {
+ x2 = intersections[i];
+ var segmentLength = Math.abs(x2 - x1);
+ if (segmentLength > maxSegmentLength) {
+ x = (x1 + x2) / 2;
+ if (ol.geom.flat.contains.linearRingsContainsXY(
+ flatCoordinates, offset, ends, stride, x, y)) {
+ pointX = x;
+ maxSegmentLength = segmentLength;
+ }
+ }
+ x1 = x2;
+ }
+ if (isNaN(pointX)) {
+ // There is no horizontal line that has its center point inside the linear
+ // ring. Use the center of the the linear ring's extent.
+ pointX = flatCenters[flatCentersOffset];
+ }
+ if (opt_dest) {
+ opt_dest.push(pointX, y);
+ return opt_dest;
+ } else {
+ return [pointX, y];
+ }
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {Array.<number>} flatCenters Flat centers.
+ * @return {Array.<number>} Interior points.
+ */
+ol.geom.flat.interiorpoint.linearRingss = function(flatCoordinates, offset, endss, stride, flatCenters) {
+ goog.asserts.assert(2 * endss.length == flatCenters.length,
+ 'endss.length times 2 should be flatCenters.length');
+ var interiorPoints = [];
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ interiorPoints = ol.geom.flat.interiorpoint.linearRings(flatCoordinates,
+ offset, ends, stride, flatCenters, 2 * i, interiorPoints);
+ offset = ends[ends.length - 1];
+ }
+ return interiorPoints;
+};
+
+goog.provide('ol.geom.flat.segments');
+
+
+/**
+ * This function calls `callback` for each segment of the flat coordinates
+ * array. If the callback returns a truthy value the function returns that
+ * value immediately. Otherwise the function returns `false`.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {function(this: S, ol.Coordinate, ol.Coordinate): T} callback Function
+ * called for each segment.
+ * @param {S=} opt_this The object to be used as the value of 'this'
+ * within callback.
+ * @return {T|boolean} Value.
+ * @template T,S
+ */
+ol.geom.flat.segments.forEach = function(flatCoordinates, offset, end, stride, callback, opt_this) {
+ var point1 = [flatCoordinates[offset], flatCoordinates[offset + 1]];
+ var point2 = [];
+ var ret;
+ for (; (offset + stride) < end; offset += stride) {
+ point2[0] = flatCoordinates[offset + stride];
+ point2[1] = flatCoordinates[offset + stride + 1];
+ ret = callback.call(opt_this, point1, point2);
+ if (ret) {
+ return ret;
+ }
+ point1[0] = point2[0];
+ point1[1] = point2[1];
+ }
+ return false;
+};
+
+goog.provide('ol.geom.flat.intersectsextent');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.geom.flat.contains');
+goog.require('ol.geom.flat.segments');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} True if the geometry and the extent intersect.
+ */
+ol.geom.flat.intersectsextent.lineString = function(flatCoordinates, offset, end, stride, extent) {
+ var coordinatesExtent = ol.extent.extendFlatCoordinates(
+ ol.extent.createEmpty(), flatCoordinates, offset, end, stride);
+ if (!ol.extent.intersects(extent, coordinatesExtent)) {
+ return false;
+ }
+ if (ol.extent.containsExtent(extent, coordinatesExtent)) {
+ return true;
+ }
+ if (coordinatesExtent[0] >= extent[0] &&
+ coordinatesExtent[2] <= extent[2]) {
+ return true;
+ }
+ if (coordinatesExtent[1] >= extent[1] &&
+ coordinatesExtent[3] <= extent[3]) {
+ return true;
+ }
+ return ol.geom.flat.segments.forEach(flatCoordinates, offset, end, stride,
+ /**
+ * @param {ol.Coordinate} point1 Start point.
+ * @param {ol.Coordinate} point2 End point.
+ * @return {boolean} `true` if the segment and the extent intersect,
+ * `false` otherwise.
+ */
+ function(point1, point2) {
+ return ol.extent.intersectsSegment(extent, point1, point2);
+ });
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} True if the geometry and the extent intersect.
+ */
+ol.geom.flat.intersectsextent.lineStrings = function(flatCoordinates, offset, ends, stride, extent) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ if (ol.geom.flat.intersectsextent.lineString(
+ flatCoordinates, offset, ends[i], stride, extent)) {
+ return true;
+ }
+ offset = ends[i];
+ }
+ return false;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} True if the geometry and the extent intersect.
+ */
+ol.geom.flat.intersectsextent.linearRing = function(flatCoordinates, offset, end, stride, extent) {
+ if (ol.geom.flat.intersectsextent.lineString(
+ flatCoordinates, offset, end, stride, extent)) {
+ return true;
+ }
+ if (ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, offset, end, stride, extent[0], extent[1])) {
+ return true;
+ }
+ if (ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, offset, end, stride, extent[0], extent[3])) {
+ return true;
+ }
+ if (ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, offset, end, stride, extent[2], extent[1])) {
+ return true;
+ }
+ if (ol.geom.flat.contains.linearRingContainsXY(
+ flatCoordinates, offset, end, stride, extent[2], extent[3])) {
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} True if the geometry and the extent intersect.
+ */
+ol.geom.flat.intersectsextent.linearRings = function(flatCoordinates, offset, ends, stride, extent) {
+ goog.asserts.assert(ends.length > 0, 'ends should not be an empty array');
+ if (!ol.geom.flat.intersectsextent.linearRing(
+ flatCoordinates, offset, ends[0], stride, extent)) {
+ return false;
+ }
+ if (ends.length === 1) {
+ return true;
+ }
+ var i, ii;
+ for (i = 1, ii = ends.length; i < ii; ++i) {
+ if (ol.geom.flat.contains.linearRingContainsExtent(
+ flatCoordinates, ends[i - 1], ends[i], stride, extent)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @param {ol.Extent} extent Extent.
+ * @return {boolean} True if the geometry and the extent intersect.
+ */
+ol.geom.flat.intersectsextent.linearRingss = function(flatCoordinates, offset, endss, stride, extent) {
+ goog.asserts.assert(endss.length > 0, 'endss should not be an empty array');
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ if (ol.geom.flat.intersectsextent.linearRings(
+ flatCoordinates, offset, ends, stride, extent)) {
+ return true;
+ }
+ offset = ends[ends.length - 1];
+ }
+ return false;
+};
+
+goog.provide('ol.geom.flat.reverse');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ */
+ol.geom.flat.reverse.coordinates = function(flatCoordinates, offset, end, stride) {
+ while (offset < end - stride) {
+ var i;
+ for (i = 0; i < stride; ++i) {
+ var tmp = flatCoordinates[offset + i];
+ flatCoordinates[offset + i] = flatCoordinates[end - stride + i];
+ flatCoordinates[end - stride + i] = tmp;
+ }
+ offset += stride;
+ end -= stride;
+ }
+};
+
+goog.provide('ol.geom.flat.orient');
+
+goog.require('ol');
+goog.require('ol.geom.flat.reverse');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {boolean} Is clockwise.
+ */
+ol.geom.flat.orient.linearRingIsClockwise = function(flatCoordinates, offset, end, stride) {
+ // http://tinyurl.com/clockwise-method
+ // https://github.com/OSGeo/gdal/blob/trunk/gdal/ogr/ogrlinearring.cpp
+ var edge = 0;
+ var x1 = flatCoordinates[end - stride];
+ var y1 = flatCoordinates[end - stride + 1];
+ for (; offset < end; offset += stride) {
+ var x2 = flatCoordinates[offset];
+ var y2 = flatCoordinates[offset + 1];
+ edge += (x2 - x1) * (y2 + y1);
+ x1 = x2;
+ y1 = y2;
+ }
+ return edge > 0;
+};
+
+
+/**
+ * Determines if linear rings are oriented. By default, left-hand orientation
+ * is tested (first ring must be clockwise, remaining rings counter-clockwise).
+ * To test for right-hand orientation, use the `opt_right` argument.
+ *
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Array of end indexes.
+ * @param {number} stride Stride.
+ * @param {boolean=} opt_right Test for right-hand orientation
+ * (counter-clockwise exterior ring and clockwise interior rings).
+ * @return {boolean} Rings are correctly oriented.
+ */
+ol.geom.flat.orient.linearRingsAreOriented = function(flatCoordinates, offset, ends, stride, opt_right) {
+ var right = opt_right !== undefined ? opt_right : false;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var isClockwise = ol.geom.flat.orient.linearRingIsClockwise(
+ flatCoordinates, offset, end, stride);
+ if (i === 0) {
+ if ((right && isClockwise) || (!right && !isClockwise)) {
+ return false;
+ }
+ } else {
+ if ((right && !isClockwise) || (!right && isClockwise)) {
+ return false;
+ }
+ }
+ offset = end;
+ }
+ return true;
+};
+
+
+/**
+ * Determines if linear rings are oriented. By default, left-hand orientation
+ * is tested (first ring must be clockwise, remaining rings counter-clockwise).
+ * To test for right-hand orientation, use the `opt_right` argument.
+ *
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Array of array of end indexes.
+ * @param {number} stride Stride.
+ * @param {boolean=} opt_right Test for right-hand orientation
+ * (counter-clockwise exterior ring and clockwise interior rings).
+ * @return {boolean} Rings are correctly oriented.
+ */
+ol.geom.flat.orient.linearRingssAreOriented = function(flatCoordinates, offset, endss, stride, opt_right) {
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ if (!ol.geom.flat.orient.linearRingsAreOriented(
+ flatCoordinates, offset, endss[i], stride, opt_right)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * Orient coordinates in a flat array of linear rings. By default, rings
+ * are oriented following the left-hand rule (clockwise for exterior and
+ * counter-clockwise for interior rings). To orient according to the
+ * right-hand rule, use the `opt_right` argument.
+ *
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {boolean=} opt_right Follow the right-hand rule for orientation.
+ * @return {number} End.
+ */
+ol.geom.flat.orient.orientLinearRings = function(flatCoordinates, offset, ends, stride, opt_right) {
+ var right = opt_right !== undefined ? opt_right : false;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var isClockwise = ol.geom.flat.orient.linearRingIsClockwise(
+ flatCoordinates, offset, end, stride);
+ var reverse = i === 0 ?
+ (right && isClockwise) || (!right && !isClockwise) :
+ (right && !isClockwise) || (!right && isClockwise);
+ if (reverse) {
+ ol.geom.flat.reverse.coordinates(flatCoordinates, offset, end, stride);
+ }
+ offset = end;
+ }
+ return offset;
+};
+
+
+/**
+ * Orient coordinates in a flat array of linear rings. By default, rings
+ * are oriented following the left-hand rule (clockwise for exterior and
+ * counter-clockwise for interior rings). To orient according to the
+ * right-hand rule, use the `opt_right` argument.
+ *
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Array of array of end indexes.
+ * @param {number} stride Stride.
+ * @param {boolean=} opt_right Follow the right-hand rule for orientation.
+ * @return {number} End.
+ */
+ol.geom.flat.orient.orientLinearRingss = function(flatCoordinates, offset, endss, stride, opt_right) {
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ offset = ol.geom.flat.orient.orientLinearRings(
+ flatCoordinates, offset, endss[i], stride, opt_right);
+ }
+ return offset;
+};
+
+goog.provide('ol.geom.Polygon');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.area');
+goog.require('ol.geom.flat.closest');
+goog.require('ol.geom.flat.contains');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.geom.flat.interiorpoint');
+goog.require('ol.geom.flat.intersectsextent');
+goog.require('ol.geom.flat.orient');
+goog.require('ol.geom.flat.simplify');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * Polygon geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.Polygon = function(coordinates, opt_layout) {
+
+ ol.geom.SimpleGeometry.call(this);
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.ends_ = [];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.flatInteriorPointRevision_ = -1;
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.flatInteriorPoint_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDelta_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDeltaRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.orientedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.orientedFlatCoordinates_ = null;
+
+ this.setCoordinates(coordinates, opt_layout);
+
+};
+ol.inherits(ol.geom.Polygon, ol.geom.SimpleGeometry);
+
+
+/**
+ * Append the passed linear ring to this polygon.
+ * @param {ol.geom.LinearRing} linearRing Linear ring.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.appendLinearRing = function(linearRing) {
+ goog.asserts.assert(linearRing.getLayout() == this.layout,
+ 'layout of linearRing should match layout');
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = linearRing.getFlatCoordinates().slice();
+ } else {
+ ol.array.extend(this.flatCoordinates, linearRing.getFlatCoordinates());
+ }
+ this.ends_.push(this.flatCoordinates.length);
+ this.changed();
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Polygon} Clone.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.clone = function() {
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(
+ this.layout, this.flatCoordinates.slice(), this.ends_.slice());
+ return polygon;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Polygon.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ if (this.maxDeltaRevision_ != this.getRevision()) {
+ this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getsMaxSquaredDelta(
+ this.flatCoordinates, 0, this.ends_, this.stride, 0));
+ this.maxDeltaRevision_ = this.getRevision();
+ }
+ return ol.geom.flat.closest.getsClosestPoint(
+ this.flatCoordinates, 0, this.ends_, this.stride,
+ this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Polygon.prototype.containsXY = function(x, y) {
+ return ol.geom.flat.contains.linearRingsContainsXY(
+ this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, x, y);
+};
+
+
+/**
+ * Return the area of the polygon on projected plane.
+ * @return {number} Area (on projected plane).
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getArea = function() {
+ return ol.geom.flat.area.linearRings(
+ this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride);
+};
+
+
+/**
+ * Get the coordinate array for this geometry. This array has the structure
+ * of a GeoJSON coordinate array for polygons.
+ *
+ * @param {boolean=} opt_right Orient coordinates according to the right-hand
+ * rule (counter-clockwise for exterior and clockwise for interior rings).
+ * If `false`, coordinates will be oriented according to the left-hand rule
+ * (clockwise for exterior and counter-clockwise for interior rings).
+ * By default, coordinate orientation will depend on how the geometry was
+ * constructed.
+ * @return {Array.<Array.<ol.Coordinate>>} Coordinates.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getCoordinates = function(opt_right) {
+ var flatCoordinates;
+ if (opt_right !== undefined) {
+ flatCoordinates = this.getOrientedFlatCoordinates().slice();
+ ol.geom.flat.orient.orientLinearRings(
+ flatCoordinates, 0, this.ends_, this.stride, opt_right);
+ } else {
+ flatCoordinates = this.flatCoordinates;
+ }
+
+ return ol.geom.flat.inflate.coordinatess(
+ flatCoordinates, 0, this.ends_, this.stride);
+};
+
+
+/**
+ * @return {Array.<number>} Ends.
+ */
+ol.geom.Polygon.prototype.getEnds = function() {
+ return this.ends_;
+};
+
+
+/**
+ * @return {Array.<number>} Interior point.
+ */
+ol.geom.Polygon.prototype.getFlatInteriorPoint = function() {
+ if (this.flatInteriorPointRevision_ != this.getRevision()) {
+ var flatCenter = ol.extent.getCenter(this.getExtent());
+ this.flatInteriorPoint_ = ol.geom.flat.interiorpoint.linearRings(
+ this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride,
+ flatCenter, 0);
+ this.flatInteriorPointRevision_ = this.getRevision();
+ }
+ return this.flatInteriorPoint_;
+};
+
+
+/**
+ * Return an interior point of the polygon.
+ * @return {ol.geom.Point} Interior point.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getInteriorPoint = function() {
+ return new ol.geom.Point(this.getFlatInteriorPoint());
+};
+
+
+/**
+ * Return the number of rings of the polygon, this includes the exterior
+ * ring and any interior rings.
+ *
+ * @return {number} Number of rings.
+ * @api
+ */
+ol.geom.Polygon.prototype.getLinearRingCount = function() {
+ return this.ends_.length;
+};
+
+
+/**
+ * Return the Nth linear ring of the polygon geometry. Return `null` if the
+ * given index is out of range.
+ * The exterior linear ring is available at index `0` and the interior rings
+ * at index `1` and beyond.
+ *
+ * @param {number} index Index.
+ * @return {ol.geom.LinearRing} Linear ring.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getLinearRing = function(index) {
+ goog.asserts.assert(0 <= index && index < this.ends_.length,
+ 'index should be in between 0 and and length of this.ends_');
+ if (index < 0 || this.ends_.length <= index) {
+ return null;
+ }
+ var linearRing = new ol.geom.LinearRing(null);
+ linearRing.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
+ index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]));
+ return linearRing;
+};
+
+
+/**
+ * Return the linear rings of the polygon.
+ * @return {Array.<ol.geom.LinearRing>} Linear rings.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getLinearRings = function() {
+ var layout = this.layout;
+ var flatCoordinates = this.flatCoordinates;
+ var ends = this.ends_;
+ var linearRings = [];
+ var offset = 0;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var linearRing = new ol.geom.LinearRing(null);
+ linearRing.setFlatCoordinates(layout, flatCoordinates.slice(offset, end));
+ linearRings.push(linearRing);
+ offset = end;
+ }
+ return linearRings;
+};
+
+
+/**
+ * @return {Array.<number>} Oriented flat coordinates.
+ */
+ol.geom.Polygon.prototype.getOrientedFlatCoordinates = function() {
+ if (this.orientedRevision_ != this.getRevision()) {
+ var flatCoordinates = this.flatCoordinates;
+ if (ol.geom.flat.orient.linearRingsAreOriented(
+ flatCoordinates, 0, this.ends_, this.stride)) {
+ this.orientedFlatCoordinates_ = flatCoordinates;
+ } else {
+ this.orientedFlatCoordinates_ = flatCoordinates.slice();
+ this.orientedFlatCoordinates_.length =
+ ol.geom.flat.orient.orientLinearRings(
+ this.orientedFlatCoordinates_, 0, this.ends_, this.stride);
+ }
+ this.orientedRevision_ = this.getRevision();
+ }
+ return this.orientedFlatCoordinates_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Polygon.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ var simplifiedFlatCoordinates = [];
+ var simplifiedEnds = [];
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.quantizes(
+ this.flatCoordinates, 0, this.ends_, this.stride,
+ Math.sqrt(squaredTolerance),
+ simplifiedFlatCoordinates, 0, simplifiedEnds);
+ var simplifiedPolygon = new ol.geom.Polygon(null);
+ simplifiedPolygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEnds);
+ return simplifiedPolygon;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.Polygon.prototype.getType = function() {
+ return ol.geom.GeometryType.POLYGON;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.Polygon.prototype.intersectsExtent = function(extent) {
+ return ol.geom.flat.intersectsextent.linearRings(
+ this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, extent);
+};
+
+
+/**
+ * Set the coordinates of the polygon.
+ * @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.Polygon.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.ends_);
+ } else {
+ this.setLayout(opt_layout, coordinates, 2);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ var ends = ol.geom.flat.deflate.coordinatess(
+ this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
+ this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {Array.<number>} ends Ends.
+ */
+ol.geom.Polygon.prototype.setFlatCoordinates = function(layout, flatCoordinates, ends) {
+ if (!flatCoordinates) {
+ goog.asserts.assert(ends && ends.length === 0,
+ 'ends must be an empty array');
+ } else if (ends.length === 0) {
+ goog.asserts.assert(flatCoordinates.length === 0,
+ 'flatCoordinates should be an empty array');
+ } else {
+ goog.asserts.assert(flatCoordinates.length == ends[ends.length - 1],
+ 'the length of flatCoordinates should be the last entry of ends');
+ }
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.ends_ = ends;
+ this.changed();
+};
+
+
+/**
+ * Create an approximation of a circle on the surface of a sphere.
+ * @param {ol.Sphere} sphere The sphere.
+ * @param {ol.Coordinate} center Center (`[lon, lat]` in degrees).
+ * @param {number} radius The great-circle distance from the center to
+ * the polygon vertices.
+ * @param {number=} opt_n Optional number of vertices for the resulting
+ * polygon. Default is `32`.
+ * @return {ol.geom.Polygon} The "circular" polygon.
+ * @api stable
+ */
+ol.geom.Polygon.circular = function(sphere, center, radius, opt_n) {
+ var n = opt_n ? opt_n : 32;
+ /** @type {Array.<number>} */
+ var flatCoordinates = [];
+ var i;
+ for (i = 0; i < n; ++i) {
+ ol.array.extend(
+ flatCoordinates, sphere.offset(center, radius, 2 * Math.PI * i / n));
+ }
+ flatCoordinates.push(flatCoordinates[0], flatCoordinates[1]);
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, flatCoordinates, [flatCoordinates.length]);
+ return polygon;
+};
+
+
+/**
+ * Create a polygon from an extent. The layout used is `XY`.
+ * @param {ol.Extent} extent The extent.
+ * @return {ol.geom.Polygon} The polygon.
+ * @api
+ */
+ol.geom.Polygon.fromExtent = function(extent) {
+ var minX = extent[0];
+ var minY = extent[1];
+ var maxX = extent[2];
+ var maxY = extent[3];
+ var flatCoordinates =
+ [minX, minY, minX, maxY, maxX, maxY, maxX, minY, minX, minY];
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, flatCoordinates, [flatCoordinates.length]);
+ return polygon;
+};
+
+
+/**
+ * Create a regular polygon from a circle.
+ * @param {ol.geom.Circle} circle Circle geometry.
+ * @param {number=} opt_sides Number of sides of the polygon. Default is 32.
+ * @param {number=} opt_angle Start angle for the first vertex of the polygon in
+ * radians. Default is 0.
+ * @return {ol.geom.Polygon} Polygon geometry.
+ * @api
+ */
+ol.geom.Polygon.fromCircle = function(circle, opt_sides, opt_angle) {
+ var sides = opt_sides ? opt_sides : 32;
+ var stride = circle.getStride();
+ var layout = circle.getLayout();
+ var polygon = new ol.geom.Polygon(null, layout);
+ var arrayLength = stride * (sides + 1);
+ var flatCoordinates = new Array(arrayLength);
+ for (var i = 0; i < arrayLength; i++) {
+ flatCoordinates[i] = 0;
+ }
+ var ends = [flatCoordinates.length];
+ polygon.setFlatCoordinates(layout, flatCoordinates, ends);
+ ol.geom.Polygon.makeRegular(
+ polygon, circle.getCenter(), circle.getRadius(), opt_angle);
+ return polygon;
+};
+
+
+/**
+ * Modify the coordinates of a polygon to make it a regular polygon.
+ * @param {ol.geom.Polygon} polygon Polygon geometry.
+ * @param {ol.Coordinate} center Center of the regular polygon.
+ * @param {number} radius Radius of the regular polygon.
+ * @param {number=} opt_angle Start angle for the first vertex of the polygon in
+ * radians. Default is 0.
+ */
+ol.geom.Polygon.makeRegular = function(polygon, center, radius, opt_angle) {
+ var flatCoordinates = polygon.getFlatCoordinates();
+ var layout = polygon.getLayout();
+ var stride = polygon.getStride();
+ var ends = polygon.getEnds();
+ goog.asserts.assert(ends.length === 1, 'only 1 ring is supported');
+ var sides = flatCoordinates.length / stride - 1;
+ var startAngle = opt_angle ? opt_angle : 0;
+ var angle, offset;
+ for (var i = 0; i <= sides; ++i) {
+ offset = i * stride;
+ angle = startAngle + (ol.math.modulo(i, sides) * 2 * Math.PI / sides);
+ flatCoordinates[offset] = center[0] + (radius * Math.cos(angle));
+ flatCoordinates[offset + 1] = center[1] + (radius * Math.sin(angle));
+ }
+ polygon.setFlatCoordinates(layout, flatCoordinates, ends);
+};
+
+goog.provide('ol.View');
+goog.provide('ol.ViewHint');
+goog.provide('ol.ViewProperty');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.CenterConstraint');
+goog.require('ol.Constraints');
+goog.require('ol.Object');
+goog.require('ol.ResolutionConstraint');
+goog.require('ol.RotationConstraint');
+goog.require('ol.coordinate');
+goog.require('ol.extent');
+goog.require('ol.geom.Polygon');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.proj');
+goog.require('ol.proj.METERS_PER_UNIT');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+
+
+/**
+ * @enum {string}
+ */
+ol.ViewProperty = {
+ CENTER: 'center',
+ RESOLUTION: 'resolution',
+ ROTATION: 'rotation'
+};
+
+
+/**
+ * @enum {number}
+ */
+ol.ViewHint = {
+ ANIMATING: 0,
+ INTERACTING: 1
+};
+
+
+/**
+ * @classdesc
+ * An ol.View object represents a simple 2D view of the map.
+ *
+ * This is the object to act upon to change the center, resolution,
+ * and rotation of the map.
+ *
+ * ### The view states
+ *
+ * An `ol.View` is determined by three states: `center`, `resolution`,
+ * and `rotation`. Each state has a corresponding getter and setter, e.g.
+ * `getCenter` and `setCenter` for the `center` state.
+ *
+ * An `ol.View` has a `projection`. The projection determines the
+ * coordinate system of the center, and its units determine the units of the
+ * resolution (projection units per pixel). The default projection is
+ * Spherical Mercator (EPSG:3857).
+ *
+ * ### The constraints
+ *
+ * `setCenter`, `setResolution` and `setRotation` can be used to change the
+ * states of the view. Any value can be passed to the setters. And the value
+ * that is passed to a setter will effectively be the value set in the view,
+ * and returned by the corresponding getter.
+ *
+ * But an `ol.View` object also has a *resolution constraint*, a
+ * *rotation constraint* and a *center constraint*.
+ *
+ * As said above, no constraints are applied when the setters are used to set
+ * new states for the view. Applying constraints is done explicitly through
+ * the use of the `constrain*` functions (`constrainResolution` and
+ * `constrainRotation` and `constrainCenter`).
+ *
+ * The main users of the constraints are the interactions and the
+ * controls. For example, double-clicking on the map changes the view to
+ * the "next" resolution. And releasing the fingers after pinch-zooming
+ * snaps to the closest resolution (with an animation).
+ *
+ * The *resolution constraint* snaps to specific resolutions. It is
+ * determined by the following options: `resolutions`, `maxResolution`,
+ * `maxZoom`, and `zoomFactor`. If `resolutions` is set, the other three
+ * options are ignored. See documentation for each option for more
+ * information.
+ *
+ * The *rotation constraint* snaps to specific angles. It is determined
+ * by the following options: `enableRotation` and `constrainRotation`.
+ * By default the rotation value is snapped to zero when approaching the
+ * horizontal.
+ *
+ * The *center constraint* is determined by the `extent` option. By
+ * default the center is not constrained at all.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.ViewOptions=} opt_options View options.
+ * @api stable
+ */
+ol.View = function(opt_options) {
+ ol.Object.call(this);
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.hints_ = [0, 0];
+
+ /**
+ * @type {Object.<string, *>}
+ */
+ var properties = {};
+ properties[ol.ViewProperty.CENTER] = options.center !== undefined ?
+ options.center : null;
+
+ /**
+ * @private
+ * @const
+ * @type {ol.proj.Projection}
+ */
+ this.projection_ = ol.proj.createProjection(options.projection, 'EPSG:3857');
+
+ var resolutionConstraintInfo = ol.View.createResolutionConstraint_(
+ options);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxResolution_ = resolutionConstraintInfo.maxResolution;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.minResolution_ = resolutionConstraintInfo.minResolution;
+
+ /**
+ * @private
+ * @type {Array.<number>|undefined}
+ */
+ this.resolutions_ = options.resolutions;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.minZoom_ = resolutionConstraintInfo.minZoom;
+
+ var centerConstraint = ol.View.createCenterConstraint_(options);
+ var resolutionConstraint = resolutionConstraintInfo.constraint;
+ var rotationConstraint = ol.View.createRotationConstraint_(options);
+
+ /**
+ * @private
+ * @type {ol.Constraints}
+ */
+ this.constraints_ = new ol.Constraints(
+ centerConstraint, resolutionConstraint, rotationConstraint);
+
+ if (options.resolution !== undefined) {
+ properties[ol.ViewProperty.RESOLUTION] = options.resolution;
+ } else if (options.zoom !== undefined) {
+ properties[ol.ViewProperty.RESOLUTION] = this.constrainResolution(
+ this.maxResolution_, options.zoom - this.minZoom_);
+ }
+ properties[ol.ViewProperty.ROTATION] =
+ options.rotation !== undefined ? options.rotation : 0;
+ this.setProperties(properties);
+};
+ol.inherits(ol.View, ol.Object);
+
+
+/**
+ * @param {number} rotation Target rotation.
+ * @param {ol.Coordinate} anchor Rotation anchor.
+ * @return {ol.Coordinate|undefined} Center for rotation and anchor.
+ */
+ol.View.prototype.calculateCenterRotate = function(rotation, anchor) {
+ var center;
+ var currentCenter = this.getCenter();
+ if (currentCenter !== undefined) {
+ center = [currentCenter[0] - anchor[0], currentCenter[1] - anchor[1]];
+ ol.coordinate.rotate(center, rotation - this.getRotation());
+ ol.coordinate.add(center, anchor);
+ }
+ return center;
+};
+
+
+/**
+ * @param {number} resolution Target resolution.
+ * @param {ol.Coordinate} anchor Zoom anchor.
+ * @return {ol.Coordinate|undefined} Center for resolution and anchor.
+ */
+ol.View.prototype.calculateCenterZoom = function(resolution, anchor) {
+ var center;
+ var currentCenter = this.getCenter();
+ var currentResolution = this.getResolution();
+ if (currentCenter !== undefined && currentResolution !== undefined) {
+ var x = anchor[0] -
+ resolution * (anchor[0] - currentCenter[0]) / currentResolution;
+ var y = anchor[1] -
+ resolution * (anchor[1] - currentCenter[1]) / currentResolution;
+ center = [x, y];
+ }
+ return center;
+};
+
+
+/**
+ * Get the constrained center of this view.
+ * @param {ol.Coordinate|undefined} center Center.
+ * @return {ol.Coordinate|undefined} Constrained center.
+ * @api
+ */
+ol.View.prototype.constrainCenter = function(center) {
+ return this.constraints_.center(center);
+};
+
+
+/**
+ * Get the constrained resolution of this view.
+ * @param {number|undefined} resolution Resolution.
+ * @param {number=} opt_delta Delta. Default is `0`.
+ * @param {number=} opt_direction Direction. Default is `0`.
+ * @return {number|undefined} Constrained resolution.
+ * @api
+ */
+ol.View.prototype.constrainResolution = function(
+ resolution, opt_delta, opt_direction) {
+ var delta = opt_delta || 0;
+ var direction = opt_direction || 0;
+ return this.constraints_.resolution(resolution, delta, direction);
+};
+
+
+/**
+ * Get the constrained rotation of this view.
+ * @param {number|undefined} rotation Rotation.
+ * @param {number=} opt_delta Delta. Default is `0`.
+ * @return {number|undefined} Constrained rotation.
+ * @api
+ */
+ol.View.prototype.constrainRotation = function(rotation, opt_delta) {
+ var delta = opt_delta || 0;
+ return this.constraints_.rotation(rotation, delta);
+};
+
+
+/**
+ * Get the view center.
+ * @return {ol.Coordinate|undefined} The center of the view.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.getCenter = function() {
+ return /** @type {ol.Coordinate|undefined} */ (
+ this.get(ol.ViewProperty.CENTER));
+};
+
+
+/**
+ * @param {Array.<number>=} opt_hints Destination array.
+ * @return {Array.<number>} Hint.
+ */
+ol.View.prototype.getHints = function(opt_hints) {
+ if (opt_hints !== undefined) {
+ opt_hints[0] = this.hints_[0];
+ opt_hints[1] = this.hints_[1];
+ return opt_hints;
+ } else {
+ return this.hints_.slice();
+ }
+};
+
+
+/**
+ * Calculate the extent for the current view state and the passed size.
+ * The size is the pixel dimensions of the box into which the calculated extent
+ * should fit. In most cases you want to get the extent of the entire map,
+ * that is `map.getSize()`.
+ * @param {ol.Size} size Box pixel size.
+ * @return {ol.Extent} Extent.
+ * @api stable
+ */
+ol.View.prototype.calculateExtent = function(size) {
+ var center = this.getCenter();
+ goog.asserts.assert(center, 'The view center is not defined');
+ var resolution = this.getResolution();
+ goog.asserts.assert(resolution !== undefined,
+ 'The view resolution is not defined');
+ var rotation = this.getRotation();
+ goog.asserts.assert(rotation !== undefined,
+ 'The view rotation is not defined');
+
+ return ol.extent.getForViewAndSize(center, resolution, rotation, size);
+};
+
+
+/**
+ * Get the maximum resolution of the view.
+ * @return {number} The maximum resolution of the view.
+ * @api
+ */
+ol.View.prototype.getMaxResolution = function() {
+ return this.maxResolution_;
+};
+
+
+/**
+ * Get the minimum resolution of the view.
+ * @return {number} The minimum resolution of the view.
+ * @api
+ */
+ol.View.prototype.getMinResolution = function() {
+ return this.minResolution_;
+};
+
+
+/**
+ * Get the view projection.
+ * @return {ol.proj.Projection} The projection of the view.
+ * @api stable
+ */
+ol.View.prototype.getProjection = function() {
+ return this.projection_;
+};
+
+
+/**
+ * Get the view resolution.
+ * @return {number|undefined} The resolution of the view.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.getResolution = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.ViewProperty.RESOLUTION));
+};
+
+
+/**
+ * Get the resolutions for the view. This returns the array of resolutions
+ * passed to the constructor of the {ol.View}, or undefined if none were given.
+ * @return {Array.<number>|undefined} The resolutions of the view.
+ * @api stable
+ */
+ol.View.prototype.getResolutions = function() {
+ return this.resolutions_;
+};
+
+
+/**
+ * Get the resolution for a provided extent (in map units) and size (in pixels).
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Size} size Box pixel size.
+ * @return {number} The resolution at which the provided extent will render at
+ * the given size.
+ */
+ol.View.prototype.getResolutionForExtent = function(extent, size) {
+ var xResolution = ol.extent.getWidth(extent) / size[0];
+ var yResolution = ol.extent.getHeight(extent) / size[1];
+ return Math.max(xResolution, yResolution);
+};
+
+
+/**
+ * Return a function that returns a value between 0 and 1 for a
+ * resolution. Exponential scaling is assumed.
+ * @param {number=} opt_power Power.
+ * @return {function(number): number} Resolution for value function.
+ */
+ol.View.prototype.getResolutionForValueFunction = function(opt_power) {
+ var power = opt_power || 2;
+ var maxResolution = this.maxResolution_;
+ var minResolution = this.minResolution_;
+ var max = Math.log(maxResolution / minResolution) / Math.log(power);
+ return (
+ /**
+ * @param {number} value Value.
+ * @return {number} Resolution.
+ */
+ function(value) {
+ var resolution = maxResolution / Math.pow(power, value * max);
+ goog.asserts.assert(resolution >= minResolution &&
+ resolution <= maxResolution,
+ 'calculated resolution outside allowed bounds (%s <= %s <= %s)',
+ minResolution, resolution, maxResolution);
+ return resolution;
+ });
+};
+
+
+/**
+ * Get the view rotation.
+ * @return {number} The rotation of the view in radians.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.getRotation = function() {
+ return /** @type {number} */ (this.get(ol.ViewProperty.ROTATION));
+};
+
+
+/**
+ * Return a function that returns a resolution for a value between
+ * 0 and 1. Exponential scaling is assumed.
+ * @param {number=} opt_power Power.
+ * @return {function(number): number} Value for resolution function.
+ */
+ol.View.prototype.getValueForResolutionFunction = function(opt_power) {
+ var power = opt_power || 2;
+ var maxResolution = this.maxResolution_;
+ var minResolution = this.minResolution_;
+ var max = Math.log(maxResolution / minResolution) / Math.log(power);
+ return (
+ /**
+ * @param {number} resolution Resolution.
+ * @return {number} Value.
+ */
+ function(resolution) {
+ var value =
+ (Math.log(maxResolution / resolution) / Math.log(power)) / max;
+ goog.asserts.assert(value >= 0 && value <= 1,
+ 'calculated value (%s) ouside allowed range (0-1)', value);
+ return value;
+ });
+};
+
+
+/**
+ * @return {olx.ViewState} View state.
+ */
+ol.View.prototype.getState = function() {
+ goog.asserts.assert(this.isDef(),
+ 'the view was not defined (had no center and/or resolution)');
+ var center = /** @type {ol.Coordinate} */ (this.getCenter());
+ var projection = this.getProjection();
+ var resolution = /** @type {number} */ (this.getResolution());
+ var rotation = this.getRotation();
+ return /** @type {olx.ViewState} */ ({
+ // Snap center to closest pixel
+ center: [
+ Math.round(center[0] / resolution) * resolution,
+ Math.round(center[1] / resolution) * resolution
+ ],
+ projection: projection !== undefined ? projection : null,
+ resolution: resolution,
+ rotation: rotation
+ });
+};
+
+
+/**
+ * Get the current zoom level. Return undefined if the current
+ * resolution is undefined or not a "constrained resolution".
+ * @return {number|undefined} Zoom.
+ * @api stable
+ */
+ol.View.prototype.getZoom = function() {
+ var offset;
+ var resolution = this.getResolution();
+
+ if (resolution !== undefined) {
+ var res, z = 0;
+ do {
+ res = this.constrainResolution(this.maxResolution_, z);
+ if (res == resolution) {
+ offset = z;
+ break;
+ }
+ ++z;
+ } while (res > this.minResolution_);
+ }
+
+ return offset !== undefined ? this.minZoom_ + offset : offset;
+};
+
+
+/**
+ * Fit the given geometry or extent based on the given map size and border.
+ * The size is pixel dimensions of the box to fit the extent into.
+ * In most cases you will want to use the map size, that is `map.getSize()`.
+ * Takes care of the map angle.
+ * @param {ol.geom.SimpleGeometry|ol.Extent} geometry Geometry.
+ * @param {ol.Size} size Box pixel size.
+ * @param {olx.view.FitOptions=} opt_options Options.
+ * @api
+ */
+ol.View.prototype.fit = function(geometry, size, opt_options) {
+ if (!(geometry instanceof ol.geom.SimpleGeometry)) {
+ goog.asserts.assert(Array.isArray(geometry),
+ 'invalid extent or geometry');
+ goog.asserts.assert(!ol.extent.isEmpty(geometry),
+ 'cannot fit empty extent');
+ geometry = ol.geom.Polygon.fromExtent(geometry);
+ }
+
+ var options = opt_options || {};
+
+ var padding = options.padding !== undefined ? options.padding : [0, 0, 0, 0];
+ var constrainResolution = options.constrainResolution !== undefined ?
+ options.constrainResolution : true;
+ var nearest = options.nearest !== undefined ? options.nearest : false;
+ var minResolution;
+ if (options.minResolution !== undefined) {
+ minResolution = options.minResolution;
+ } else if (options.maxZoom !== undefined) {
+ minResolution = this.constrainResolution(
+ this.maxResolution_, options.maxZoom - this.minZoom_, 0);
+ } else {
+ minResolution = 0;
+ }
+ var coords = geometry.getFlatCoordinates();
+
+ // calculate rotated extent
+ var rotation = this.getRotation();
+ goog.asserts.assert(rotation !== undefined, 'rotation was not defined');
+ var cosAngle = Math.cos(-rotation);
+ var sinAngle = Math.sin(-rotation);
+ var minRotX = +Infinity;
+ var minRotY = +Infinity;
+ var maxRotX = -Infinity;
+ var maxRotY = -Infinity;
+ var stride = geometry.getStride();
+ for (var i = 0, ii = coords.length; i < ii; i += stride) {
+ var rotX = coords[i] * cosAngle - coords[i + 1] * sinAngle;
+ var rotY = coords[i] * sinAngle + coords[i + 1] * cosAngle;
+ minRotX = Math.min(minRotX, rotX);
+ minRotY = Math.min(minRotY, rotY);
+ maxRotX = Math.max(maxRotX, rotX);
+ maxRotY = Math.max(maxRotY, rotY);
+ }
+
+ // calculate resolution
+ var resolution = this.getResolutionForExtent(
+ [minRotX, minRotY, maxRotX, maxRotY],
+ [size[0] - padding[1] - padding[3], size[1] - padding[0] - padding[2]]);
+ resolution = isNaN(resolution) ? minResolution :
+ Math.max(resolution, minResolution);
+ if (constrainResolution) {
+ var constrainedResolution = this.constrainResolution(resolution, 0, 0);
+ if (!nearest && constrainedResolution < resolution) {
+ constrainedResolution = this.constrainResolution(
+ constrainedResolution, -1, 0);
+ }
+ resolution = constrainedResolution;
+ }
+ this.setResolution(resolution);
+
+ // calculate center
+ sinAngle = -sinAngle; // go back to original rotation
+ var centerRotX = (minRotX + maxRotX) / 2;
+ var centerRotY = (minRotY + maxRotY) / 2;
+ centerRotX += (padding[1] - padding[3]) / 2 * resolution;
+ centerRotY += (padding[0] - padding[2]) / 2 * resolution;
+ var centerX = centerRotX * cosAngle - centerRotY * sinAngle;
+ var centerY = centerRotY * cosAngle + centerRotX * sinAngle;
+
+ this.setCenter([centerX, centerY]);
+};
+
+
+/**
+ * Center on coordinate and view position.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.Size} size Box pixel size.
+ * @param {ol.Pixel} position Position on the view to center on.
+ * @api
+ */
+ol.View.prototype.centerOn = function(coordinate, size, position) {
+ // calculate rotated position
+ var rotation = this.getRotation();
+ var cosAngle = Math.cos(-rotation);
+ var sinAngle = Math.sin(-rotation);
+ var rotX = coordinate[0] * cosAngle - coordinate[1] * sinAngle;
+ var rotY = coordinate[1] * cosAngle + coordinate[0] * sinAngle;
+ var resolution = this.getResolution();
+ rotX += (size[0] / 2 - position[0]) * resolution;
+ rotY += (position[1] - size[1] / 2) * resolution;
+
+ // go back to original angle
+ sinAngle = -sinAngle; // go back to original rotation
+ var centerX = rotX * cosAngle - rotY * sinAngle;
+ var centerY = rotY * cosAngle + rotX * sinAngle;
+
+ this.setCenter([centerX, centerY]);
+};
+
+
+/**
+ * @return {boolean} Is defined.
+ */
+ol.View.prototype.isDef = function() {
+ return !!this.getCenter() && this.getResolution() !== undefined;
+};
+
+
+/**
+ * Rotate the view around a given coordinate.
+ * @param {number} rotation New rotation value for the view.
+ * @param {ol.Coordinate=} opt_anchor The rotation center.
+ * @api stable
+ */
+ol.View.prototype.rotate = function(rotation, opt_anchor) {
+ if (opt_anchor !== undefined) {
+ var center = this.calculateCenterRotate(rotation, opt_anchor);
+ this.setCenter(center);
+ }
+ this.setRotation(rotation);
+};
+
+
+/**
+ * Set the center of the current view.
+ * @param {ol.Coordinate|undefined} center The center of the view.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.setCenter = function(center) {
+ this.set(ol.ViewProperty.CENTER, center);
+};
+
+
+/**
+ * @param {ol.ViewHint} hint Hint.
+ * @param {number} delta Delta.
+ * @return {number} New value.
+ */
+ol.View.prototype.setHint = function(hint, delta) {
+ goog.asserts.assert(0 <= hint && hint < this.hints_.length,
+ 'illegal hint (%s), must be between 0 and %s', hint, this.hints_.length);
+ this.hints_[hint] += delta;
+ goog.asserts.assert(this.hints_[hint] >= 0,
+ 'Hint at %s must be positive, was %s', hint, this.hints_[hint]);
+ return this.hints_[hint];
+};
+
+
+/**
+ * Set the resolution for this view.
+ * @param {number|undefined} resolution The resolution of the view.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.setResolution = function(resolution) {
+ this.set(ol.ViewProperty.RESOLUTION, resolution);
+};
+
+
+/**
+ * Set the rotation for this view.
+ * @param {number} rotation The rotation of the view in radians.
+ * @observable
+ * @api stable
+ */
+ol.View.prototype.setRotation = function(rotation) {
+ this.set(ol.ViewProperty.ROTATION, rotation);
+};
+
+
+/**
+ * Zoom to a specific zoom level.
+ * @param {number} zoom Zoom level.
+ * @api stable
+ */
+ol.View.prototype.setZoom = function(zoom) {
+ var resolution = this.constrainResolution(
+ this.maxResolution_, zoom - this.minZoom_, 0);
+ this.setResolution(resolution);
+};
+
+
+/**
+ * @param {olx.ViewOptions} options View options.
+ * @private
+ * @return {ol.CenterConstraintType} The constraint.
+ */
+ol.View.createCenterConstraint_ = function(options) {
+ if (options.extent !== undefined) {
+ return ol.CenterConstraint.createExtent(options.extent);
+ } else {
+ return ol.CenterConstraint.none;
+ }
+};
+
+
+/**
+ * @private
+ * @param {olx.ViewOptions} options View options.
+ * @return {{constraint: ol.ResolutionConstraintType, maxResolution: number,
+ * minResolution: number}} The constraint.
+ */
+ol.View.createResolutionConstraint_ = function(options) {
+ var resolutionConstraint;
+ var maxResolution;
+ var minResolution;
+
+ // TODO: move these to be ol constants
+ // see https://github.com/openlayers/ol3/issues/2076
+ var defaultMaxZoom = 28;
+ var defaultZoomFactor = 2;
+
+ var minZoom = options.minZoom !== undefined ?
+ options.minZoom : ol.DEFAULT_MIN_ZOOM;
+
+ var maxZoom = options.maxZoom !== undefined ?
+ options.maxZoom : defaultMaxZoom;
+
+ var zoomFactor = options.zoomFactor !== undefined ?
+ options.zoomFactor : defaultZoomFactor;
+
+ if (options.resolutions !== undefined) {
+ var resolutions = options.resolutions;
+ maxResolution = resolutions[0];
+ minResolution = resolutions[resolutions.length - 1];
+ resolutionConstraint = ol.ResolutionConstraint.createSnapToResolutions(
+ resolutions);
+ } else {
+ // calculate the default min and max resolution
+ var projection = ol.proj.createProjection(options.projection, 'EPSG:3857');
+ var extent = projection.getExtent();
+ var size = !extent ?
+ // use an extent that can fit the whole world if need be
+ 360 * ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] /
+ projection.getMetersPerUnit() :
+ Math.max(ol.extent.getWidth(extent), ol.extent.getHeight(extent));
+
+ var defaultMaxResolution = size / ol.DEFAULT_TILE_SIZE / Math.pow(
+ defaultZoomFactor, ol.DEFAULT_MIN_ZOOM);
+
+ var defaultMinResolution = defaultMaxResolution / Math.pow(
+ defaultZoomFactor, defaultMaxZoom - ol.DEFAULT_MIN_ZOOM);
+
+ // user provided maxResolution takes precedence
+ maxResolution = options.maxResolution;
+ if (maxResolution !== undefined) {
+ minZoom = 0;
+ } else {
+ maxResolution = defaultMaxResolution / Math.pow(zoomFactor, minZoom);
+ }
+
+ // user provided minResolution takes precedence
+ minResolution = options.minResolution;
+ if (minResolution === undefined) {
+ if (options.maxZoom !== undefined) {
+ if (options.maxResolution !== undefined) {
+ minResolution = maxResolution / Math.pow(zoomFactor, maxZoom);
+ } else {
+ minResolution = defaultMaxResolution / Math.pow(zoomFactor, maxZoom);
+ }
+ } else {
+ minResolution = defaultMinResolution;
+ }
+ }
+
+ // given discrete zoom levels, minResolution may be different than provided
+ maxZoom = minZoom + Math.floor(
+ Math.log(maxResolution / minResolution) / Math.log(zoomFactor));
+ minResolution = maxResolution / Math.pow(zoomFactor, maxZoom - minZoom);
+
+ resolutionConstraint = ol.ResolutionConstraint.createSnapToPower(
+ zoomFactor, maxResolution, maxZoom - minZoom);
+ }
+ return {constraint: resolutionConstraint, maxResolution: maxResolution,
+ minResolution: minResolution, minZoom: minZoom};
+};
+
+
+/**
+ * @private
+ * @param {olx.ViewOptions} options View options.
+ * @return {ol.RotationConstraintType} Rotation constraint.
+ */
+ol.View.createRotationConstraint_ = function(options) {
+ var enableRotation = options.enableRotation !== undefined ?
+ options.enableRotation : true;
+ if (enableRotation) {
+ var constrainRotation = options.constrainRotation;
+ if (constrainRotation === undefined || constrainRotation === true) {
+ return ol.RotationConstraint.createSnapToZero();
+ } else if (constrainRotation === false) {
+ return ol.RotationConstraint.none;
+ } else if (goog.isNumber(constrainRotation)) {
+ return ol.RotationConstraint.createSnapToN(constrainRotation);
+ } else {
+ goog.asserts.fail(
+ 'illegal option for constrainRotation (%s)', constrainRotation);
+ return ol.RotationConstraint.none;
+ }
+ } else {
+ return ol.RotationConstraint.disable;
+ }
+};
+
+goog.provide('ol.easing');
+
+
+/**
+ * Start slow and speed up.
+ * @param {number} t Input between 0 and 1.
+ * @return {number} Output between 0 and 1.
+ * @api
+ */
+ol.easing.easeIn = function(t) {
+ return Math.pow(t, 3);
+};
+
+
+/**
+ * Start fast and slow down.
+ * @param {number} t Input between 0 and 1.
+ * @return {number} Output between 0 and 1.
+ * @api
+ */
+ol.easing.easeOut = function(t) {
+ return 1 - ol.easing.easeIn(1 - t);
+};
+
+
+/**
+ * Start slow, speed up, and then slow down again.
+ * @param {number} t Input between 0 and 1.
+ * @return {number} Output between 0 and 1.
+ * @api
+ */
+ol.easing.inAndOut = function(t) {
+ return 3 * t * t - 2 * t * t * t;
+};
+
+
+/**
+ * Maintain a constant speed over time.
+ * @param {number} t Input between 0 and 1.
+ * @return {number} Output between 0 and 1.
+ * @api
+ */
+ol.easing.linear = function(t) {
+ return t;
+};
+
+
+/**
+ * Start slow, speed up, and at the very end slow down again. This has the
+ * same general behavior as {@link ol.easing.inAndOut}, but the final slowdown
+ * is delayed.
+ * @param {number} t Input between 0 and 1.
+ * @return {number} Output between 0 and 1.
+ * @api
+ */
+ol.easing.upAndDown = function(t) {
+ if (t < 0.5) {
+ return ol.easing.inAndOut(2 * t);
+ } else {
+ return 1 - ol.easing.inAndOut(2 * (t - 0.5));
+ }
+};
+
+goog.provide('ol.animation');
+
+goog.require('ol');
+goog.require('ol.ViewHint');
+goog.require('ol.coordinate');
+goog.require('ol.easing');
+
+
+/**
+ * Generate an animated transition that will "bounce" the resolution as it
+ * approaches the final value.
+ * @param {olx.animation.BounceOptions} options Bounce options.
+ * @return {ol.PreRenderFunction} Pre-render function.
+ * @api
+ */
+ol.animation.bounce = function(options) {
+ var resolution = options.resolution;
+ var start = options.start ? options.start : Date.now();
+ var duration = options.duration !== undefined ? options.duration : 1000;
+ var easing = options.easing ?
+ options.easing : ol.easing.upAndDown;
+ return (
+ /**
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {boolean} Run this function in the next frame.
+ */
+ function(map, frameState) {
+ if (frameState.time < start) {
+ frameState.animate = true;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else if (frameState.time < start + duration) {
+ var delta = easing((frameState.time - start) / duration);
+ var deltaResolution = resolution - frameState.viewState.resolution;
+ frameState.animate = true;
+ frameState.viewState.resolution += delta * deltaResolution;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else {
+ return false;
+ }
+ });
+};
+
+
+/**
+ * Generate an animated transition while updating the view center.
+ * @param {olx.animation.PanOptions} options Pan options.
+ * @return {ol.PreRenderFunction} Pre-render function.
+ * @api
+ */
+ol.animation.pan = function(options) {
+ var source = options.source;
+ var start = options.start ? options.start : Date.now();
+ var sourceX = source[0];
+ var sourceY = source[1];
+ var duration = options.duration !== undefined ? options.duration : 1000;
+ var easing = options.easing ?
+ options.easing : ol.easing.inAndOut;
+ return (
+ /**
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {boolean} Run this function in the next frame.
+ */
+ function(map, frameState) {
+ if (frameState.time < start) {
+ frameState.animate = true;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else if (frameState.time < start + duration) {
+ var delta = 1 - easing((frameState.time - start) / duration);
+ var deltaX = sourceX - frameState.viewState.center[0];
+ var deltaY = sourceY - frameState.viewState.center[1];
+ frameState.animate = true;
+ frameState.viewState.center[0] += delta * deltaX;
+ frameState.viewState.center[1] += delta * deltaY;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else {
+ return false;
+ }
+ });
+};
+
+
+/**
+ * Generate an animated transition while updating the view rotation.
+ * @param {olx.animation.RotateOptions} options Rotate options.
+ * @return {ol.PreRenderFunction} Pre-render function.
+ * @api
+ */
+ol.animation.rotate = function(options) {
+ var sourceRotation = options.rotation ? options.rotation : 0;
+ var start = options.start ? options.start : Date.now();
+ var duration = options.duration !== undefined ? options.duration : 1000;
+ var easing = options.easing ?
+ options.easing : ol.easing.inAndOut;
+ var anchor = options.anchor ?
+ options.anchor : null;
+
+ return (
+ /**
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {boolean} Run this function in the next frame.
+ */
+ function(map, frameState) {
+ if (frameState.time < start) {
+ frameState.animate = true;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else if (frameState.time < start + duration) {
+ var delta = 1 - easing((frameState.time - start) / duration);
+ var deltaRotation =
+ (sourceRotation - frameState.viewState.rotation) * delta;
+ frameState.animate = true;
+ frameState.viewState.rotation += deltaRotation;
+ if (anchor) {
+ var center = frameState.viewState.center;
+ ol.coordinate.sub(center, anchor);
+ ol.coordinate.rotate(center, deltaRotation);
+ ol.coordinate.add(center, anchor);
+ }
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else {
+ return false;
+ }
+ });
+};
+
+
+/**
+ * Generate an animated transition while updating the view resolution.
+ * @param {olx.animation.ZoomOptions} options Zoom options.
+ * @return {ol.PreRenderFunction} Pre-render function.
+ * @api
+ */
+ol.animation.zoom = function(options) {
+ var sourceResolution = options.resolution;
+ var start = options.start ? options.start : Date.now();
+ var duration = options.duration !== undefined ? options.duration : 1000;
+ var easing = options.easing ?
+ options.easing : ol.easing.inAndOut;
+ return (
+ /**
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {boolean} Run this function in the next frame.
+ */
+ function(map, frameState) {
+ if (frameState.time < start) {
+ frameState.animate = true;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else if (frameState.time < start + duration) {
+ var delta = 1 - easing((frameState.time - start) / duration);
+ var deltaResolution =
+ sourceResolution - frameState.viewState.resolution;
+ frameState.animate = true;
+ frameState.viewState.resolution += delta * deltaResolution;
+ frameState.viewHints[ol.ViewHint.ANIMATING] += 1;
+ return true;
+ } else {
+ return false;
+ }
+ });
+};
+
+goog.provide('ol.TileRange');
+
+goog.require('goog.asserts');
+
+
+/**
+ * A representation of a contiguous block of tiles. A tile range is specified
+ * by its min/max tile coordinates and is inclusive of coordinates.
+ *
+ * @constructor
+ * @param {number} minX Minimum X.
+ * @param {number} maxX Maximum X.
+ * @param {number} minY Minimum Y.
+ * @param {number} maxY Maximum Y.
+ * @struct
+ */
+ol.TileRange = function(minX, maxX, minY, maxY) {
+
+ /**
+ * @type {number}
+ */
+ this.minX = minX;
+
+ /**
+ * @type {number}
+ */
+ this.maxX = maxX;
+
+ /**
+ * @type {number}
+ */
+ this.minY = minY;
+
+ /**
+ * @type {number}
+ */
+ this.maxY = maxY;
+
+};
+
+
+/**
+ * @param {...ol.TileCoord} var_args Tile coordinates.
+ * @return {!ol.TileRange} Bounding tile box.
+ */
+ol.TileRange.boundingTileRange = function(var_args) {
+ var tileCoord0 = /** @type {ol.TileCoord} */ (arguments[0]);
+ var tileCoord0Z = tileCoord0[0];
+ var tileCoord0X = tileCoord0[1];
+ var tileCoord0Y = tileCoord0[2];
+ var tileRange = new ol.TileRange(tileCoord0X, tileCoord0X,
+ tileCoord0Y, tileCoord0Y);
+ var i, ii, tileCoord, tileCoordX, tileCoordY, tileCoordZ;
+ for (i = 1, ii = arguments.length; i < ii; ++i) {
+ tileCoord = /** @type {ol.TileCoord} */ (arguments[i]);
+ tileCoordZ = tileCoord[0];
+ tileCoordX = tileCoord[1];
+ tileCoordY = tileCoord[2];
+ goog.asserts.assert(tileCoordZ == tileCoord0Z,
+ 'passed tilecoords all have the same Z-value');
+ tileRange.minX = Math.min(tileRange.minX, tileCoordX);
+ tileRange.maxX = Math.max(tileRange.maxX, tileCoordX);
+ tileRange.minY = Math.min(tileRange.minY, tileCoordY);
+ tileRange.maxY = Math.max(tileRange.maxY, tileCoordY);
+ }
+ return tileRange;
+};
+
+
+/**
+ * @param {number} minX Minimum X.
+ * @param {number} maxX Maximum X.
+ * @param {number} minY Minimum Y.
+ * @param {number} maxY Maximum Y.
+ * @param {ol.TileRange|undefined} tileRange TileRange.
+ * @return {ol.TileRange} Tile range.
+ */
+ol.TileRange.createOrUpdate = function(minX, maxX, minY, maxY, tileRange) {
+ if (tileRange !== undefined) {
+ tileRange.minX = minX;
+ tileRange.maxX = maxX;
+ tileRange.minY = minY;
+ tileRange.maxY = maxY;
+ return tileRange;
+ } else {
+ return new ol.TileRange(minX, maxX, minY, maxY);
+ }
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @return {boolean} Contains tile coordinate.
+ */
+ol.TileRange.prototype.contains = function(tileCoord) {
+ return this.containsXY(tileCoord[1], tileCoord[2]);
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Contains.
+ */
+ol.TileRange.prototype.containsTileRange = function(tileRange) {
+ return this.minX <= tileRange.minX && tileRange.maxX <= this.maxX &&
+ this.minY <= tileRange.minY && tileRange.maxY <= this.maxY;
+};
+
+
+/**
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @return {boolean} Contains coordinate.
+ */
+ol.TileRange.prototype.containsXY = function(x, y) {
+ return this.minX <= x && x <= this.maxX && this.minY <= y && y <= this.maxY;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Equals.
+ */
+ol.TileRange.prototype.equals = function(tileRange) {
+ return this.minX == tileRange.minX && this.minY == tileRange.minY &&
+ this.maxX == tileRange.maxX && this.maxY == tileRange.maxY;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ */
+ol.TileRange.prototype.extend = function(tileRange) {
+ if (tileRange.minX < this.minX) {
+ this.minX = tileRange.minX;
+ }
+ if (tileRange.maxX > this.maxX) {
+ this.maxX = tileRange.maxX;
+ }
+ if (tileRange.minY < this.minY) {
+ this.minY = tileRange.minY;
+ }
+ if (tileRange.maxY > this.maxY) {
+ this.maxY = tileRange.maxY;
+ }
+};
+
+
+/**
+ * @return {number} Height.
+ */
+ol.TileRange.prototype.getHeight = function() {
+ return this.maxY - this.minY + 1;
+};
+
+
+/**
+ * @return {ol.Size} Size.
+ */
+ol.TileRange.prototype.getSize = function() {
+ return [this.getWidth(), this.getHeight()];
+};
+
+
+/**
+ * @return {number} Width.
+ */
+ol.TileRange.prototype.getWidth = function() {
+ return this.maxX - this.minX + 1;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Intersects.
+ */
+ol.TileRange.prototype.intersects = function(tileRange) {
+ return this.minX <= tileRange.maxX &&
+ this.maxX >= tileRange.minX &&
+ this.minY <= tileRange.maxY &&
+ this.maxY >= tileRange.minY;
+};
+
+goog.provide('ol.Attribution');
+
+goog.require('ol.TileRange');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * An attribution for a layer source.
+ *
+ * Example:
+ *
+ * source: new ol.source.OSM({
+ * attributions: [
+ * new ol.Attribution({
+ * html: 'All maps &copy; ' +
+ * '<a href="http://www.opencyclemap.org/">OpenCycleMap</a>'
+ * }),
+ * ol.source.OSM.ATTRIBUTION
+ * ],
+ * ..
+ *
+ * @constructor
+ * @param {olx.AttributionOptions} options Attribution options.
+ * @struct
+ * @api stable
+ */
+ol.Attribution = function(options) {
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.html_ = options.html;
+
+ /**
+ * @private
+ * @type {Object.<string, Array.<ol.TileRange>>}
+ */
+ this.tileRanges_ = options.tileRanges ? options.tileRanges : null;
+
+};
+
+
+/**
+ * Get the attribution markup.
+ * @return {string} The attribution HTML.
+ * @api stable
+ */
+ol.Attribution.prototype.getHTML = function() {
+ return this.html_;
+};
+
+
+/**
+ * @param {Object.<string, ol.TileRange>} tileRanges Tile ranges.
+ * @param {!ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @param {!ol.proj.Projection} projection Projection.
+ * @return {boolean} Intersects any tile range.
+ */
+ol.Attribution.prototype.intersectsAnyTileRange = function(tileRanges, tileGrid, projection) {
+ if (!this.tileRanges_) {
+ return true;
+ }
+ var i, ii, tileRange, zKey;
+ for (zKey in tileRanges) {
+ if (!(zKey in this.tileRanges_)) {
+ continue;
+ }
+ tileRange = tileRanges[zKey];
+ var testTileRange;
+ for (i = 0, ii = this.tileRanges_[zKey].length; i < ii; ++i) {
+ testTileRange = this.tileRanges_[zKey][i];
+ if (testTileRange.intersects(tileRange)) {
+ return true;
+ }
+ var extentTileRange = tileGrid.getTileRangeForExtentAndZ(
+ ol.tilegrid.extentFromProjection(projection), parseInt(zKey, 10));
+ var width = extentTileRange.getWidth();
+ if (tileRange.minX < extentTileRange.minX ||
+ tileRange.maxX > extentTileRange.maxX) {
+ if (testTileRange.intersects(new ol.TileRange(
+ ol.math.modulo(tileRange.minX, width),
+ ol.math.modulo(tileRange.maxX, width),
+ tileRange.minY, tileRange.maxY))) {
+ return true;
+ }
+ if (tileRange.getWidth() > width &&
+ testTileRange.intersects(extentTileRange)) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+};
+
+/**
+ * An implementation of Google Maps' MVCArray.
+ * @see https://developers.google.com/maps/documentation/javascript/reference
+ */
+
+goog.provide('ol.Collection');
+goog.provide('ol.CollectionEvent');
+goog.provide('ol.CollectionEventType');
+
+goog.require('ol.events.Event');
+goog.require('ol.Object');
+
+
+/**
+ * @enum {string}
+ */
+ol.CollectionEventType = {
+ /**
+ * Triggered when an item is added to the collection.
+ * @event ol.CollectionEvent#add
+ * @api stable
+ */
+ ADD: 'add',
+ /**
+ * Triggered when an item is removed from the collection.
+ * @event ol.CollectionEvent#remove
+ * @api stable
+ */
+ REMOVE: 'remove'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.Collection} instances are instances of this
+ * type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.CollectionEvent}
+ * @param {ol.CollectionEventType} type Type.
+ * @param {*=} opt_element Element.
+ * @param {Object=} opt_target Target.
+ */
+ol.CollectionEvent = function(type, opt_element, opt_target) {
+
+ ol.events.Event.call(this, type, opt_target);
+
+ /**
+ * The element that is added to or removed from the collection.
+ * @type {*}
+ * @api stable
+ */
+ this.element = opt_element;
+
+};
+ol.inherits(ol.CollectionEvent, ol.events.Event);
+
+
+/**
+ * @enum {string}
+ */
+ol.CollectionProperty = {
+ LENGTH: 'length'
+};
+
+
+/**
+ * @classdesc
+ * An expanded version of standard JS Array, adding convenience methods for
+ * manipulation. Add and remove changes to the Collection trigger a Collection
+ * event. Note that this does not cover changes to the objects _within_ the
+ * Collection; they trigger events on the appropriate object, not on the
+ * Collection as a whole.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @fires ol.CollectionEvent
+ * @param {!Array.<T>=} opt_array Array.
+ * @template T
+ * @api stable
+ */
+ol.Collection = function(opt_array) {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {!Array.<T>}
+ */
+ this.array_ = opt_array ? opt_array : [];
+
+ this.updateLength_();
+
+};
+ol.inherits(ol.Collection, ol.Object);
+
+
+/**
+ * Remove all elements from the collection.
+ * @api stable
+ */
+ol.Collection.prototype.clear = function() {
+ while (this.getLength() > 0) {
+ this.pop();
+ }
+};
+
+
+/**
+ * Add elements to the collection. This pushes each item in the provided array
+ * to the end of the collection.
+ * @param {!Array.<T>} arr Array.
+ * @return {ol.Collection.<T>} This collection.
+ * @api stable
+ */
+ol.Collection.prototype.extend = function(arr) {
+ var i, ii;
+ for (i = 0, ii = arr.length; i < ii; ++i) {
+ this.push(arr[i]);
+ }
+ return this;
+};
+
+
+/**
+ * Iterate over each element, calling the provided callback.
+ * @param {function(this: S, T, number, Array.<T>): *} f The function to call
+ * for every element. This function takes 3 arguments (the element, the
+ * index and the array). The return value is ignored.
+ * @param {S=} opt_this The object to use as `this` in `f`.
+ * @template S
+ * @api stable
+ */
+ol.Collection.prototype.forEach = function(f, opt_this) {
+ this.array_.forEach(f, opt_this);
+};
+
+
+/**
+ * Get a reference to the underlying Array object. Warning: if the array
+ * is mutated, no events will be dispatched by the collection, and the
+ * collection's "length" property won't be in sync with the actual length
+ * of the array.
+ * @return {!Array.<T>} Array.
+ * @api stable
+ */
+ol.Collection.prototype.getArray = function() {
+ return this.array_;
+};
+
+
+/**
+ * Get the element at the provided index.
+ * @param {number} index Index.
+ * @return {T} Element.
+ * @api stable
+ */
+ol.Collection.prototype.item = function(index) {
+ return this.array_[index];
+};
+
+
+/**
+ * Get the length of this collection.
+ * @return {number} The length of the array.
+ * @observable
+ * @api stable
+ */
+ol.Collection.prototype.getLength = function() {
+ return /** @type {number} */ (this.get(ol.CollectionProperty.LENGTH));
+};
+
+
+/**
+ * Insert an element at the provided index.
+ * @param {number} index Index.
+ * @param {T} elem Element.
+ * @api stable
+ */
+ol.Collection.prototype.insertAt = function(index, elem) {
+ this.array_.splice(index, 0, elem);
+ this.updateLength_();
+ this.dispatchEvent(
+ new ol.CollectionEvent(ol.CollectionEventType.ADD, elem, this));
+};
+
+
+/**
+ * Remove the last element of the collection and return it.
+ * Return `undefined` if the collection is empty.
+ * @return {T|undefined} Element.
+ * @api stable
+ */
+ol.Collection.prototype.pop = function() {
+ return this.removeAt(this.getLength() - 1);
+};
+
+
+/**
+ * Insert the provided element at the end of the collection.
+ * @param {T} elem Element.
+ * @return {number} Length.
+ * @api stable
+ */
+ol.Collection.prototype.push = function(elem) {
+ var n = this.array_.length;
+ this.insertAt(n, elem);
+ return n;
+};
+
+
+/**
+ * Remove the first occurrence of an element from the collection.
+ * @param {T} elem Element.
+ * @return {T|undefined} The removed element or undefined if none found.
+ * @api stable
+ */
+ol.Collection.prototype.remove = function(elem) {
+ var arr = this.array_;
+ var i, ii;
+ for (i = 0, ii = arr.length; i < ii; ++i) {
+ if (arr[i] === elem) {
+ return this.removeAt(i);
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * Remove the element at the provided index and return it.
+ * Return `undefined` if the collection does not contain this index.
+ * @param {number} index Index.
+ * @return {T|undefined} Value.
+ * @api stable
+ */
+ol.Collection.prototype.removeAt = function(index) {
+ var prev = this.array_[index];
+ this.array_.splice(index, 1);
+ this.updateLength_();
+ this.dispatchEvent(
+ new ol.CollectionEvent(ol.CollectionEventType.REMOVE, prev, this));
+ return prev;
+};
+
+
+/**
+ * Set the element at the provided index.
+ * @param {number} index Index.
+ * @param {T} elem Element.
+ * @api stable
+ */
+ol.Collection.prototype.setAt = function(index, elem) {
+ var n = this.getLength();
+ if (index < n) {
+ var prev = this.array_[index];
+ this.array_[index] = elem;
+ this.dispatchEvent(
+ new ol.CollectionEvent(ol.CollectionEventType.REMOVE, prev, this));
+ this.dispatchEvent(
+ new ol.CollectionEvent(ol.CollectionEventType.ADD, elem, this));
+ } else {
+ var j;
+ for (j = n; j < index; ++j) {
+ this.insertAt(j, undefined);
+ }
+ this.insertAt(index, elem);
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.Collection.prototype.updateLength_ = function() {
+ this.set(ol.CollectionProperty.LENGTH, this.array_.length);
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Names of standard colors with their associated hex values.
+ */
+
+goog.provide('goog.color.names');
+
+
+/**
+ * A map that contains a lot of colors that are recognised by various browsers.
+ * This list is way larger than the minimal one dictated by W3C.
+ * The keys of this map are the lowercase "readable" names of the colors, while
+ * the values are the "hex" values.
+ *
+ * @type {!Object<string, string>}
+ */
+goog.color.names = {
+ 'aliceblue': '#f0f8ff',
+ 'antiquewhite': '#faebd7',
+ 'aqua': '#00ffff',
+ 'aquamarine': '#7fffd4',
+ 'azure': '#f0ffff',
+ 'beige': '#f5f5dc',
+ 'bisque': '#ffe4c4',
+ 'black': '#000000',
+ 'blanchedalmond': '#ffebcd',
+ 'blue': '#0000ff',
+ 'blueviolet': '#8a2be2',
+ 'brown': '#a52a2a',
+ 'burlywood': '#deb887',
+ 'cadetblue': '#5f9ea0',
+ 'chartreuse': '#7fff00',
+ 'chocolate': '#d2691e',
+ 'coral': '#ff7f50',
+ 'cornflowerblue': '#6495ed',
+ 'cornsilk': '#fff8dc',
+ 'crimson': '#dc143c',
+ 'cyan': '#00ffff',
+ 'darkblue': '#00008b',
+ 'darkcyan': '#008b8b',
+ 'darkgoldenrod': '#b8860b',
+ 'darkgray': '#a9a9a9',
+ 'darkgreen': '#006400',
+ 'darkgrey': '#a9a9a9',
+ 'darkkhaki': '#bdb76b',
+ 'darkmagenta': '#8b008b',
+ 'darkolivegreen': '#556b2f',
+ 'darkorange': '#ff8c00',
+ 'darkorchid': '#9932cc',
+ 'darkred': '#8b0000',
+ 'darksalmon': '#e9967a',
+ 'darkseagreen': '#8fbc8f',
+ 'darkslateblue': '#483d8b',
+ 'darkslategray': '#2f4f4f',
+ 'darkslategrey': '#2f4f4f',
+ 'darkturquoise': '#00ced1',
+ 'darkviolet': '#9400d3',
+ 'deeppink': '#ff1493',
+ 'deepskyblue': '#00bfff',
+ 'dimgray': '#696969',
+ 'dimgrey': '#696969',
+ 'dodgerblue': '#1e90ff',
+ 'firebrick': '#b22222',
+ 'floralwhite': '#fffaf0',
+ 'forestgreen': '#228b22',
+ 'fuchsia': '#ff00ff',
+ 'gainsboro': '#dcdcdc',
+ 'ghostwhite': '#f8f8ff',
+ 'gold': '#ffd700',
+ 'goldenrod': '#daa520',
+ 'gray': '#808080',
+ 'green': '#008000',
+ 'greenyellow': '#adff2f',
+ 'grey': '#808080',
+ 'honeydew': '#f0fff0',
+ 'hotpink': '#ff69b4',
+ 'indianred': '#cd5c5c',
+ 'indigo': '#4b0082',
+ 'ivory': '#fffff0',
+ 'khaki': '#f0e68c',
+ 'lavender': '#e6e6fa',
+ 'lavenderblush': '#fff0f5',
+ 'lawngreen': '#7cfc00',
+ 'lemonchiffon': '#fffacd',
+ 'lightblue': '#add8e6',
+ 'lightcoral': '#f08080',
+ 'lightcyan': '#e0ffff',
+ 'lightgoldenrodyellow': '#fafad2',
+ 'lightgray': '#d3d3d3',
+ 'lightgreen': '#90ee90',
+ 'lightgrey': '#d3d3d3',
+ 'lightpink': '#ffb6c1',
+ 'lightsalmon': '#ffa07a',
+ 'lightseagreen': '#20b2aa',
+ 'lightskyblue': '#87cefa',
+ 'lightslategray': '#778899',
+ 'lightslategrey': '#778899',
+ 'lightsteelblue': '#b0c4de',
+ 'lightyellow': '#ffffe0',
+ 'lime': '#00ff00',
+ 'limegreen': '#32cd32',
+ 'linen': '#faf0e6',
+ 'magenta': '#ff00ff',
+ 'maroon': '#800000',
+ 'mediumaquamarine': '#66cdaa',
+ 'mediumblue': '#0000cd',
+ 'mediumorchid': '#ba55d3',
+ 'mediumpurple': '#9370db',
+ 'mediumseagreen': '#3cb371',
+ 'mediumslateblue': '#7b68ee',
+ 'mediumspringgreen': '#00fa9a',
+ 'mediumturquoise': '#48d1cc',
+ 'mediumvioletred': '#c71585',
+ 'midnightblue': '#191970',
+ 'mintcream': '#f5fffa',
+ 'mistyrose': '#ffe4e1',
+ 'moccasin': '#ffe4b5',
+ 'navajowhite': '#ffdead',
+ 'navy': '#000080',
+ 'oldlace': '#fdf5e6',
+ 'olive': '#808000',
+ 'olivedrab': '#6b8e23',
+ 'orange': '#ffa500',
+ 'orangered': '#ff4500',
+ 'orchid': '#da70d6',
+ 'palegoldenrod': '#eee8aa',
+ 'palegreen': '#98fb98',
+ 'paleturquoise': '#afeeee',
+ 'palevioletred': '#db7093',
+ 'papayawhip': '#ffefd5',
+ 'peachpuff': '#ffdab9',
+ 'peru': '#cd853f',
+ 'pink': '#ffc0cb',
+ 'plum': '#dda0dd',
+ 'powderblue': '#b0e0e6',
+ 'purple': '#800080',
+ 'red': '#ff0000',
+ 'rosybrown': '#bc8f8f',
+ 'royalblue': '#4169e1',
+ 'saddlebrown': '#8b4513',
+ 'salmon': '#fa8072',
+ 'sandybrown': '#f4a460',
+ 'seagreen': '#2e8b57',
+ 'seashell': '#fff5ee',
+ 'sienna': '#a0522d',
+ 'silver': '#c0c0c0',
+ 'skyblue': '#87ceeb',
+ 'slateblue': '#6a5acd',
+ 'slategray': '#708090',
+ 'slategrey': '#708090',
+ 'snow': '#fffafa',
+ 'springgreen': '#00ff7f',
+ 'steelblue': '#4682b4',
+ 'tan': '#d2b48c',
+ 'teal': '#008080',
+ 'thistle': '#d8bfd8',
+ 'tomato': '#ff6347',
+ 'turquoise': '#40e0d0',
+ 'violet': '#ee82ee',
+ 'wheat': '#f5deb3',
+ 'white': '#ffffff',
+ 'whitesmoke': '#f5f5f5',
+ 'yellow': '#ffff00',
+ 'yellowgreen': '#9acd32'
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities for manipulating arrays.
+ *
+ * @author arv@google.com (Erik Arvidsson)
+ */
+
+
+goog.provide('goog.array');
+
+goog.require('goog.asserts');
+
+
+/**
+ * @define {boolean} NATIVE_ARRAY_PROTOTYPES indicates whether the code should
+ * rely on Array.prototype functions, if available.
+ *
+ * The Array.prototype functions can be defined by external libraries like
+ * Prototype and setting this flag to false forces closure to use its own
+ * goog.array implementation.
+ *
+ * If your javascript can be loaded by a third party site and you are wary about
+ * relying on the prototype functions, specify
+ * "--define goog.NATIVE_ARRAY_PROTOTYPES=false" to the JSCompiler.
+ *
+ * Setting goog.TRUSTED_SITE to false will automatically set
+ * NATIVE_ARRAY_PROTOTYPES to false.
+ */
+goog.define('goog.NATIVE_ARRAY_PROTOTYPES', goog.TRUSTED_SITE);
+
+
+/**
+ * @define {boolean} If true, JSCompiler will use the native implementation of
+ * array functions where appropriate (e.g., {@code Array#filter}) and remove the
+ * unused pure JS implementation.
+ */
+goog.define('goog.array.ASSUME_NATIVE_FUNCTIONS', false);
+
+
+/**
+ * Returns the last element in an array without removing it.
+ * Same as goog.array.last.
+ * @param {IArrayLike<T>|string} array The array.
+ * @return {T} Last item in array.
+ * @template T
+ */
+goog.array.peek = function(array) {
+ return array[array.length - 1];
+};
+
+
+/**
+ * Returns the last element in an array without removing it.
+ * Same as goog.array.peek.
+ * @param {IArrayLike<T>|string} array The array.
+ * @return {T} Last item in array.
+ * @template T
+ */
+goog.array.last = goog.array.peek;
+
+// NOTE(arv): Since most of the array functions are generic it allows you to
+// pass an array-like object. Strings have a length and are considered array-
+// like. However, the 'in' operator does not work on strings so we cannot just
+// use the array path even if the browser supports indexing into strings. We
+// therefore end up splitting the string.
+
+
+/**
+ * Returns the index of the first element of an array with a specified value, or
+ * -1 if the element is not present in the array.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-indexof}
+ *
+ * @param {IArrayLike<T>|string} arr The array to be searched.
+ * @param {T} obj The object for which we are searching.
+ * @param {number=} opt_fromIndex The index at which to start the search. If
+ * omitted the search starts at index 0.
+ * @return {number} The index of the first matching array element.
+ * @template T
+ */
+goog.array.indexOf = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.indexOf) ?
+ function(arr, obj, opt_fromIndex) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.indexOf.call(arr, obj, opt_fromIndex);
+ } :
+ function(arr, obj, opt_fromIndex) {
+ var fromIndex = opt_fromIndex == null ?
+ 0 :
+ (opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) :
+ opt_fromIndex);
+
+ if (goog.isString(arr)) {
+ // Array.prototype.indexOf uses === so only strings should be found.
+ if (!goog.isString(obj) || obj.length != 1) {
+ return -1;
+ }
+ return arr.indexOf(obj, fromIndex);
+ }
+
+ for (var i = fromIndex; i < arr.length; i++) {
+ if (i in arr && arr[i] === obj) return i;
+ }
+ return -1;
+ };
+
+
+/**
+ * Returns the index of the last element of an array with a specified value, or
+ * -1 if the element is not present in the array.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-lastindexof}
+ *
+ * @param {!IArrayLike<T>|string} arr The array to be searched.
+ * @param {T} obj The object for which we are searching.
+ * @param {?number=} opt_fromIndex The index at which to start the search. If
+ * omitted the search starts at the end of the array.
+ * @return {number} The index of the last matching array element.
+ * @template T
+ */
+goog.array.lastIndexOf = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.lastIndexOf) ?
+ function(arr, obj, opt_fromIndex) {
+ goog.asserts.assert(arr.length != null);
+
+ // Firefox treats undefined and null as 0 in the fromIndex argument which
+ // leads it to always return -1
+ var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
+ return Array.prototype.lastIndexOf.call(arr, obj, fromIndex);
+ } :
+ function(arr, obj, opt_fromIndex) {
+ var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
+
+ if (fromIndex < 0) {
+ fromIndex = Math.max(0, arr.length + fromIndex);
+ }
+
+ if (goog.isString(arr)) {
+ // Array.prototype.lastIndexOf uses === so only strings should be found.
+ if (!goog.isString(obj) || obj.length != 1) {
+ return -1;
+ }
+ return arr.lastIndexOf(obj, fromIndex);
+ }
+
+ for (var i = fromIndex; i >= 0; i--) {
+ if (i in arr && arr[i] === obj) return i;
+ }
+ return -1;
+ };
+
+
+/**
+ * Calls a function for each element in an array. Skips holes in the array.
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-foreach}
+ *
+ * @param {IArrayLike<T>|string} arr Array or array like object over
+ * which to iterate.
+ * @param {?function(this: S, T, number, ?): ?} f The function to call for every
+ * element. This function takes 3 arguments (the element, the index and the
+ * array). The return value is ignored.
+ * @param {S=} opt_obj The object to be used as the value of 'this' within f.
+ * @template T,S
+ */
+goog.array.forEach = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.forEach) ?
+ function(arr, f, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+
+ Array.prototype.forEach.call(arr, f, opt_obj);
+ } :
+ function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2) {
+ f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);
+ }
+ }
+ };
+
+
+/**
+ * Calls a function for each element in an array, starting from the last
+ * element rather than the first.
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this: S, T, number, ?): ?} f The function to call for every
+ * element. This function
+ * takes 3 arguments (the element, the index and the array). The return
+ * value is ignored.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @template T,S
+ */
+goog.array.forEachRight = function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = l - 1; i >= 0; --i) {
+ if (i in arr2) {
+ f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);
+ }
+ }
+};
+
+
+/**
+ * Calls a function for each element in an array, and if the function returns
+ * true adds the element to a new array.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-filter}
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?):boolean} f The function to call for
+ * every element. This function
+ * takes 3 arguments (the element, the index and the array) and must
+ * return a Boolean. If the return value is true the element is added to the
+ * result array. If it is false the element is not included.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @return {!Array<T>} a new array in which only elements that passed the test
+ * are present.
+ * @template T,S
+ */
+goog.array.filter = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.filter) ?
+ function(arr, f, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.filter.call(arr, f, opt_obj);
+ } :
+ function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var res = [];
+ var resLength = 0;
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2) {
+ var val = arr2[i]; // in case f mutates arr2
+ if (f.call(/** @type {?} */ (opt_obj), val, i, arr)) {
+ res[resLength++] = val;
+ }
+ }
+ }
+ return res;
+ };
+
+
+/**
+ * Calls a function for each element in an array and inserts the result into a
+ * new array.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-map}
+ *
+ * @param {IArrayLike<VALUE>|string} arr Array or array like object
+ * over which to iterate.
+ * @param {function(this:THIS, VALUE, number, ?): RESULT} f The function to call
+ * for every element. This function takes 3 arguments (the element,
+ * the index and the array) and should return something. The result will be
+ * inserted into a new array.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.
+ * @return {!Array<RESULT>} a new array with the results from f.
+ * @template THIS, VALUE, RESULT
+ */
+goog.array.map = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.map) ?
+ function(arr, f, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.map.call(arr, f, opt_obj);
+ } :
+ function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var res = new Array(l);
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2) {
+ res[i] = f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);
+ }
+ }
+ return res;
+ };
+
+
+/**
+ * Passes every element of an array into a function and accumulates the result.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-reduce}
+ *
+ * For example:
+ * var a = [1, 2, 3, 4];
+ * goog.array.reduce(a, function(r, v, i, arr) {return r + v;}, 0);
+ * returns 10
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {function(this:S, R, T, number, ?) : R} f The function to call for
+ * every element. This function
+ * takes 4 arguments (the function's previous result or the initial value,
+ * the value of the current array element, the current array index, and the
+ * array itself)
+ * function(previousValue, currentValue, index, array).
+ * @param {?} val The initial value to pass into the function on the first call.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @return {R} Result of evaluating f repeatedly across the values of the array.
+ * @template T,S,R
+ */
+goog.array.reduce = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduce) ?
+ function(arr, f, val, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+ if (opt_obj) {
+ f = goog.bind(f, opt_obj);
+ }
+ return Array.prototype.reduce.call(arr, f, val);
+ } :
+ function(arr, f, val, opt_obj) {
+ var rval = val;
+ goog.array.forEach(arr, function(val, index) {
+ rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);
+ });
+ return rval;
+ };
+
+
+/**
+ * Passes every element of an array into a function and accumulates the result,
+ * starting from the last element and working towards the first.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-reduceright}
+ *
+ * For example:
+ * var a = ['a', 'b', 'c'];
+ * goog.array.reduceRight(a, function(r, v, i, arr) {return r + v;}, '');
+ * returns 'cba'
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, R, T, number, ?) : R} f The function to call for
+ * every element. This function
+ * takes 4 arguments (the function's previous result or the initial value,
+ * the value of the current array element, the current array index, and the
+ * array itself)
+ * function(previousValue, currentValue, index, array).
+ * @param {?} val The initial value to pass into the function on the first call.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @return {R} Object returned as a result of evaluating f repeatedly across the
+ * values of the array.
+ * @template T,S,R
+ */
+goog.array.reduceRight = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduceRight) ?
+ function(arr, f, val, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+ goog.asserts.assert(f != null);
+ if (opt_obj) {
+ f = goog.bind(f, opt_obj);
+ }
+ return Array.prototype.reduceRight.call(arr, f, val);
+ } :
+ function(arr, f, val, opt_obj) {
+ var rval = val;
+ goog.array.forEachRight(arr, function(val, index) {
+ rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);
+ });
+ return rval;
+ };
+
+
+/**
+ * Calls f for each element of an array. If any call returns true, some()
+ * returns true (without checking the remaining elements). If all calls
+ * return false, some() returns false.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-some}
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call for
+ * for every element. This function takes 3 arguments (the element, the
+ * index and the array) and should return a boolean.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @return {boolean} true if any element passes the test.
+ * @template T,S
+ */
+goog.array.some = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.some) ?
+ function(arr, f, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.some.call(arr, f, opt_obj);
+ } :
+ function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {
+ return true;
+ }
+ }
+ return false;
+ };
+
+
+/**
+ * Call f for each element of an array. If all calls return true, every()
+ * returns true. If any call returns false, every() returns false and
+ * does not continue to check the remaining elements.
+ *
+ * See {@link http://tinyurl.com/developer-mozilla-org-array-every}
+ *
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call for
+ * for every element. This function takes 3 arguments (the element, the
+ * index and the array) and should return a boolean.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within f.
+ * @return {boolean} false if any element fails the test.
+ * @template T,S
+ */
+goog.array.every = goog.NATIVE_ARRAY_PROTOTYPES &&
+ (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.every) ?
+ function(arr, f, opt_obj) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.every.call(arr, f, opt_obj);
+ } :
+ function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2 && !f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {
+ return false;
+ }
+ }
+ return true;
+ };
+
+
+/**
+ * Counts the array elements that fulfill the predicate, i.e. for which the
+ * callback function returns true. Skips holes in the array.
+ *
+ * @param {!IArrayLike<T>|string} arr Array or array like object
+ * over which to iterate.
+ * @param {function(this: S, T, number, ?): boolean} f The function to call for
+ * every element. Takes 3 arguments (the element, the index and the array).
+ * @param {S=} opt_obj The object to be used as the value of 'this' within f.
+ * @return {number} The number of the matching elements.
+ * @template T,S
+ */
+goog.array.count = function(arr, f, opt_obj) {
+ var count = 0;
+ goog.array.forEach(arr, function(element, index, arr) {
+ if (f.call(/** @type {?} */ (opt_obj), element, index, arr)) {
+ ++count;
+ }
+ }, opt_obj);
+ return count;
+};
+
+
+/**
+ * Search an array for the first element that satisfies a given condition and
+ * return that element.
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call
+ * for every element. This function takes 3 arguments (the element, the
+ * index and the array) and should return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {T|null} The first array element that passes the test, or null if no
+ * element is found.
+ * @template T,S
+ */
+goog.array.find = function(arr, f, opt_obj) {
+ var i = goog.array.findIndex(arr, f, opt_obj);
+ return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i];
+};
+
+
+/**
+ * Search an array for the first element that satisfies a given condition and
+ * return its index.
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call for
+ * every element. This function
+ * takes 3 arguments (the element, the index and the array) and should
+ * return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {number} The index of the first array element that passes the test,
+ * or -1 if no element is found.
+ * @template T,S
+ */
+goog.array.findIndex = function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = 0; i < l; i++) {
+ if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {
+ return i;
+ }
+ }
+ return -1;
+};
+
+
+/**
+ * Search an array (in reverse order) for the last element that satisfies a
+ * given condition and return that element.
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call
+ * for every element. This function
+ * takes 3 arguments (the element, the index and the array) and should
+ * return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {T|null} The last array element that passes the test, or null if no
+ * element is found.
+ * @template T,S
+ */
+goog.array.findRight = function(arr, f, opt_obj) {
+ var i = goog.array.findIndexRight(arr, f, opt_obj);
+ return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i];
+};
+
+
+/**
+ * Search an array (in reverse order) for the last element that satisfies a
+ * given condition and return its index.
+ * @param {IArrayLike<T>|string} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call
+ * for every element. This function
+ * takes 3 arguments (the element, the index and the array) and should
+ * return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {number} The index of the last array element that passes the test,
+ * or -1 if no element is found.
+ * @template T,S
+ */
+goog.array.findIndexRight = function(arr, f, opt_obj) {
+ var l = arr.length; // must be fixed during loop... see docs
+ var arr2 = goog.isString(arr) ? arr.split('') : arr;
+ for (var i = l - 1; i >= 0; i--) {
+ if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {
+ return i;
+ }
+ }
+ return -1;
+};
+
+
+/**
+ * Whether the array contains the given object.
+ * @param {IArrayLike<?>|string} arr The array to test for the presence of the
+ * element.
+ * @param {*} obj The object for which to test.
+ * @return {boolean} true if obj is present.
+ */
+goog.array.contains = function(arr, obj) {
+ return goog.array.indexOf(arr, obj) >= 0;
+};
+
+
+/**
+ * Whether the array is empty.
+ * @param {IArrayLike<?>|string} arr The array to test.
+ * @return {boolean} true if empty.
+ */
+goog.array.isEmpty = function(arr) {
+ return arr.length == 0;
+};
+
+
+/**
+ * Clears the array.
+ * @param {IArrayLike<?>} arr Array or array like object to clear.
+ */
+goog.array.clear = function(arr) {
+ // For non real arrays we don't have the magic length so we delete the
+ // indices.
+ if (!goog.isArray(arr)) {
+ for (var i = arr.length - 1; i >= 0; i--) {
+ delete arr[i];
+ }
+ }
+ arr.length = 0;
+};
+
+
+/**
+ * Pushes an item into an array, if it's not already in the array.
+ * @param {Array<T>} arr Array into which to insert the item.
+ * @param {T} obj Value to add.
+ * @template T
+ */
+goog.array.insert = function(arr, obj) {
+ if (!goog.array.contains(arr, obj)) {
+ arr.push(obj);
+ }
+};
+
+
+/**
+ * Inserts an object at the given index of the array.
+ * @param {IArrayLike<?>} arr The array to modify.
+ * @param {*} obj The object to insert.
+ * @param {number=} opt_i The index at which to insert the object. If omitted,
+ * treated as 0. A negative index is counted from the end of the array.
+ */
+goog.array.insertAt = function(arr, obj, opt_i) {
+ goog.array.splice(arr, opt_i, 0, obj);
+};
+
+
+/**
+ * Inserts at the given index of the array, all elements of another array.
+ * @param {IArrayLike<?>} arr The array to modify.
+ * @param {IArrayLike<?>} elementsToAdd The array of elements to add.
+ * @param {number=} opt_i The index at which to insert the object. If omitted,
+ * treated as 0. A negative index is counted from the end of the array.
+ */
+goog.array.insertArrayAt = function(arr, elementsToAdd, opt_i) {
+ goog.partial(goog.array.splice, arr, opt_i, 0).apply(null, elementsToAdd);
+};
+
+
+/**
+ * Inserts an object into an array before a specified object.
+ * @param {Array<T>} arr The array to modify.
+ * @param {T} obj The object to insert.
+ * @param {T=} opt_obj2 The object before which obj should be inserted. If obj2
+ * is omitted or not found, obj is inserted at the end of the array.
+ * @template T
+ */
+goog.array.insertBefore = function(arr, obj, opt_obj2) {
+ var i;
+ if (arguments.length == 2 || (i = goog.array.indexOf(arr, opt_obj2)) < 0) {
+ arr.push(obj);
+ } else {
+ goog.array.insertAt(arr, obj, i);
+ }
+};
+
+
+/**
+ * Removes the first occurrence of a particular value from an array.
+ * @param {IArrayLike<T>} arr Array from which to remove
+ * value.
+ * @param {T} obj Object to remove.
+ * @return {boolean} True if an element was removed.
+ * @template T
+ */
+goog.array.remove = function(arr, obj) {
+ var i = goog.array.indexOf(arr, obj);
+ var rv;
+ if ((rv = i >= 0)) {
+ goog.array.removeAt(arr, i);
+ }
+ return rv;
+};
+
+
+/**
+ * Removes the last occurrence of a particular value from an array.
+ * @param {!IArrayLike<T>} arr Array from which to remove value.
+ * @param {T} obj Object to remove.
+ * @return {boolean} True if an element was removed.
+ * @template T
+ */
+goog.array.removeLast = function(arr, obj) {
+ var i = goog.array.lastIndexOf(arr, obj);
+ if (i >= 0) {
+ goog.array.removeAt(arr, i);
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * Removes from an array the element at index i
+ * @param {IArrayLike<?>} arr Array or array like object from which to
+ * remove value.
+ * @param {number} i The index to remove.
+ * @return {boolean} True if an element was removed.
+ */
+goog.array.removeAt = function(arr, i) {
+ goog.asserts.assert(arr.length != null);
+
+ // use generic form of splice
+ // splice returns the removed items and if successful the length of that
+ // will be 1
+ return Array.prototype.splice.call(arr, i, 1).length == 1;
+};
+
+
+/**
+ * Removes the first value that satisfies the given condition.
+ * @param {IArrayLike<T>} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call
+ * for every element. This function
+ * takes 3 arguments (the element, the index and the array) and should
+ * return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {boolean} True if an element was removed.
+ * @template T,S
+ */
+goog.array.removeIf = function(arr, f, opt_obj) {
+ var i = goog.array.findIndex(arr, f, opt_obj);
+ if (i >= 0) {
+ goog.array.removeAt(arr, i);
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * Removes all values that satisfy the given condition.
+ * @param {IArrayLike<T>} arr Array or array
+ * like object over which to iterate.
+ * @param {?function(this:S, T, number, ?) : boolean} f The function to call
+ * for every element. This function
+ * takes 3 arguments (the element, the index and the array) and should
+ * return a boolean.
+ * @param {S=} opt_obj An optional "this" context for the function.
+ * @return {number} The number of items removed
+ * @template T,S
+ */
+goog.array.removeAllIf = function(arr, f, opt_obj) {
+ var removedCount = 0;
+ goog.array.forEachRight(arr, function(val, index) {
+ if (f.call(/** @type {?} */ (opt_obj), val, index, arr)) {
+ if (goog.array.removeAt(arr, index)) {
+ removedCount++;
+ }
+ }
+ });
+ return removedCount;
+};
+
+
+/**
+ * Returns a new array that is the result of joining the arguments. If arrays
+ * are passed then their items are added, however, if non-arrays are passed they
+ * will be added to the return array as is.
+ *
+ * Note that ArrayLike objects will be added as is, rather than having their
+ * items added.
+ *
+ * goog.array.concat([1, 2], [3, 4]) -> [1, 2, 3, 4]
+ * goog.array.concat(0, [1, 2]) -> [0, 1, 2]
+ * goog.array.concat([1, 2], null) -> [1, 2, null]
+ *
+ * There is bug in all current versions of IE (6, 7 and 8) where arrays created
+ * in an iframe become corrupted soon (not immediately) after the iframe is
+ * destroyed. This is common if loading data via goog.net.IframeIo, for example.
+ * This corruption only affects the concat method which will start throwing
+ * Catastrophic Errors (#-2147418113).
+ *
+ * See http://endoflow.com/scratch/corrupted-arrays.html for a test case.
+ *
+ * Internally goog.array should use this, so that all methods will continue to
+ * work on these broken array objects.
+ *
+ * @param {...*} var_args Items to concatenate. Arrays will have each item
+ * added, while primitives and objects will be added as is.
+ * @return {!Array<?>} The new resultant array.
+ */
+goog.array.concat = function(var_args) {
+ return Array.prototype.concat.apply(Array.prototype, arguments);
+};
+
+
+/**
+ * Returns a new array that contains the contents of all the arrays passed.
+ * @param {...!Array<T>} var_args
+ * @return {!Array<T>}
+ * @template T
+ */
+goog.array.join = function(var_args) {
+ return Array.prototype.concat.apply(Array.prototype, arguments);
+};
+
+
+/**
+ * Converts an object to an array.
+ * @param {IArrayLike<T>|string} object The object to convert to an
+ * array.
+ * @return {!Array<T>} The object converted into an array. If object has a
+ * length property, every property indexed with a non-negative number
+ * less than length will be included in the result. If object does not
+ * have a length property, an empty array will be returned.
+ * @template T
+ */
+goog.array.toArray = function(object) {
+ var length = object.length;
+
+ // If length is not a number the following it false. This case is kept for
+ // backwards compatibility since there are callers that pass objects that are
+ // not array like.
+ if (length > 0) {
+ var rv = new Array(length);
+ for (var i = 0; i < length; i++) {
+ rv[i] = object[i];
+ }
+ return rv;
+ }
+ return [];
+};
+
+
+/**
+ * Does a shallow copy of an array.
+ * @param {IArrayLike<T>|string} arr Array or array-like object to
+ * clone.
+ * @return {!Array<T>} Clone of the input array.
+ * @template T
+ */
+goog.array.clone = goog.array.toArray;
+
+
+/**
+ * Extends an array with another array, element, or "array like" object.
+ * This function operates 'in-place', it does not create a new Array.
+ *
+ * Example:
+ * var a = [];
+ * goog.array.extend(a, [0, 1]);
+ * a; // [0, 1]
+ * goog.array.extend(a, 2);
+ * a; // [0, 1, 2]
+ *
+ * @param {Array<VALUE>} arr1 The array to modify.
+ * @param {...(Array<VALUE>|VALUE)} var_args The elements or arrays of elements
+ * to add to arr1.
+ * @template VALUE
+ */
+goog.array.extend = function(arr1, var_args) {
+ for (var i = 1; i < arguments.length; i++) {
+ var arr2 = arguments[i];
+ if (goog.isArrayLike(arr2)) {
+ var len1 = arr1.length || 0;
+ var len2 = arr2.length || 0;
+ arr1.length = len1 + len2;
+ for (var j = 0; j < len2; j++) {
+ arr1[len1 + j] = arr2[j];
+ }
+ } else {
+ arr1.push(arr2);
+ }
+ }
+};
+
+
+/**
+ * Adds or removes elements from an array. This is a generic version of Array
+ * splice. This means that it might work on other objects similar to arrays,
+ * such as the arguments object.
+ *
+ * @param {IArrayLike<T>} arr The array to modify.
+ * @param {number|undefined} index The index at which to start changing the
+ * array. If not defined, treated as 0.
+ * @param {number} howMany How many elements to remove (0 means no removal. A
+ * value below 0 is treated as zero and so is any other non number. Numbers
+ * are floored).
+ * @param {...T} var_args Optional, additional elements to insert into the
+ * array.
+ * @return {!Array<T>} the removed elements.
+ * @template T
+ */
+goog.array.splice = function(arr, index, howMany, var_args) {
+ goog.asserts.assert(arr.length != null);
+
+ return Array.prototype.splice.apply(arr, goog.array.slice(arguments, 1));
+};
+
+
+/**
+ * Returns a new array from a segment of an array. This is a generic version of
+ * Array slice. This means that it might work on other objects similar to
+ * arrays, such as the arguments object.
+ *
+ * @param {IArrayLike<T>|string} arr The array from
+ * which to copy a segment.
+ * @param {number} start The index of the first element to copy.
+ * @param {number=} opt_end The index after the last element to copy.
+ * @return {!Array<T>} A new array containing the specified segment of the
+ * original array.
+ * @template T
+ */
+goog.array.slice = function(arr, start, opt_end) {
+ goog.asserts.assert(arr.length != null);
+
+ // passing 1 arg to slice is not the same as passing 2 where the second is
+ // null or undefined (in that case the second argument is treated as 0).
+ // we could use slice on the arguments object and then use apply instead of
+ // testing the length
+ if (arguments.length <= 2) {
+ return Array.prototype.slice.call(arr, start);
+ } else {
+ return Array.prototype.slice.call(arr, start, opt_end);
+ }
+};
+
+
+/**
+ * Removes all duplicates from an array (retaining only the first
+ * occurrence of each array element). This function modifies the
+ * array in place and doesn't change the order of the non-duplicate items.
+ *
+ * For objects, duplicates are identified as having the same unique ID as
+ * defined by {@link goog.getUid}.
+ *
+ * Alternatively you can specify a custom hash function that returns a unique
+ * value for each item in the array it should consider unique.
+ *
+ * Runtime: N,
+ * Worstcase space: 2N (no dupes)
+ *
+ * @param {IArrayLike<T>} arr The array from which to remove
+ * duplicates.
+ * @param {Array=} opt_rv An optional array in which to return the results,
+ * instead of performing the removal inplace. If specified, the original
+ * array will remain unchanged.
+ * @param {function(T):string=} opt_hashFn An optional function to use to
+ * apply to every item in the array. This function should return a unique
+ * value for each item in the array it should consider unique.
+ * @template T
+ */
+goog.array.removeDuplicates = function(arr, opt_rv, opt_hashFn) {
+ var returnArray = opt_rv || arr;
+ var defaultHashFn = function(item) {
+ // Prefix each type with a single character representing the type to
+ // prevent conflicting keys (e.g. true and 'true').
+ return goog.isObject(item) ? 'o' + goog.getUid(item) :
+ (typeof item).charAt(0) + item;
+ };
+ var hashFn = opt_hashFn || defaultHashFn;
+
+ var seen = {}, cursorInsert = 0, cursorRead = 0;
+ while (cursorRead < arr.length) {
+ var current = arr[cursorRead++];
+ var key = hashFn(current);
+ if (!Object.prototype.hasOwnProperty.call(seen, key)) {
+ seen[key] = true;
+ returnArray[cursorInsert++] = current;
+ }
+ }
+ returnArray.length = cursorInsert;
+};
+
+
+/**
+ * Searches the specified array for the specified target using the binary
+ * search algorithm. If no opt_compareFn is specified, elements are compared
+ * using <code>goog.array.defaultCompare</code>, which compares the elements
+ * using the built in < and > operators. This will produce the expected
+ * behavior for homogeneous arrays of String(s) and Number(s). The array
+ * specified <b>must</b> be sorted in ascending order (as defined by the
+ * comparison function). If the array is not sorted, results are undefined.
+ * If the array contains multiple instances of the specified target value, any
+ * of these instances may be found.
+ *
+ * Runtime: O(log n)
+ *
+ * @param {IArrayLike<VALUE>} arr The array to be searched.
+ * @param {TARGET} target The sought value.
+ * @param {function(TARGET, VALUE): number=} opt_compareFn Optional comparison
+ * function by which the array is ordered. Should take 2 arguments to
+ * compare, and return a negative number, zero, or a positive number
+ * depending on whether the first argument is less than, equal to, or
+ * greater than the second.
+ * @return {number} Lowest index of the target value if found, otherwise
+ * (-(insertion point) - 1). The insertion point is where the value should
+ * be inserted into arr to preserve the sorted property. Return value >= 0
+ * iff target is found.
+ * @template TARGET, VALUE
+ */
+goog.array.binarySearch = function(arr, target, opt_compareFn) {
+ return goog.array.binarySearch_(
+ arr, opt_compareFn || goog.array.defaultCompare, false /* isEvaluator */,
+ target);
+};
+
+
+/**
+ * Selects an index in the specified array using the binary search algorithm.
+ * The evaluator receives an element and determines whether the desired index
+ * is before, at, or after it. The evaluator must be consistent (formally,
+ * goog.array.map(goog.array.map(arr, evaluator, opt_obj), goog.math.sign)
+ * must be monotonically non-increasing).
+ *
+ * Runtime: O(log n)
+ *
+ * @param {IArrayLike<VALUE>} arr The array to be searched.
+ * @param {function(this:THIS, VALUE, number, ?): number} evaluator
+ * Evaluator function that receives 3 arguments (the element, the index and
+ * the array). Should return a negative number, zero, or a positive number
+ * depending on whether the desired index is before, at, or after the
+ * element passed to it.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this'
+ * within evaluator.
+ * @return {number} Index of the leftmost element matched by the evaluator, if
+ * such exists; otherwise (-(insertion point) - 1). The insertion point is
+ * the index of the first element for which the evaluator returns negative,
+ * or arr.length if no such element exists. The return value is non-negative
+ * iff a match is found.
+ * @template THIS, VALUE
+ */
+goog.array.binarySelect = function(arr, evaluator, opt_obj) {
+ return goog.array.binarySearch_(
+ arr, evaluator, true /* isEvaluator */, undefined /* opt_target */,
+ opt_obj);
+};
+
+
+/**
+ * Implementation of a binary search algorithm which knows how to use both
+ * comparison functions and evaluators. If an evaluator is provided, will call
+ * the evaluator with the given optional data object, conforming to the
+ * interface defined in binarySelect. Otherwise, if a comparison function is
+ * provided, will call the comparison function against the given data object.
+ *
+ * This implementation purposefully does not use goog.bind or goog.partial for
+ * performance reasons.
+ *
+ * Runtime: O(log n)
+ *
+ * @param {IArrayLike<?>} arr The array to be searched.
+ * @param {function(?, ?, ?): number | function(?, ?): number} compareFn
+ * Either an evaluator or a comparison function, as defined by binarySearch
+ * and binarySelect above.
+ * @param {boolean} isEvaluator Whether the function is an evaluator or a
+ * comparison function.
+ * @param {?=} opt_target If the function is a comparison function, then
+ * this is the target to binary search for.
+ * @param {Object=} opt_selfObj If the function is an evaluator, this is an
+ * optional this object for the evaluator.
+ * @return {number} Lowest index of the target value if found, otherwise
+ * (-(insertion point) - 1). The insertion point is where the value should
+ * be inserted into arr to preserve the sorted property. Return value >= 0
+ * iff target is found.
+ * @private
+ */
+goog.array.binarySearch_ = function(
+ arr, compareFn, isEvaluator, opt_target, opt_selfObj) {
+ var left = 0; // inclusive
+ var right = arr.length; // exclusive
+ var found;
+ while (left < right) {
+ var middle = (left + right) >> 1;
+ var compareResult;
+ if (isEvaluator) {
+ compareResult = compareFn.call(opt_selfObj, arr[middle], middle, arr);
+ } else {
+ // NOTE(dimvar): To avoid this cast, we'd have to use function overloading
+ // for the type of binarySearch_, which the type system can't express yet.
+ compareResult = /** @type {function(?, ?): number} */ (compareFn)(
+ opt_target, arr[middle]);
+ }
+ if (compareResult > 0) {
+ left = middle + 1;
+ } else {
+ right = middle;
+ // We are looking for the lowest index so we can't return immediately.
+ found = !compareResult;
+ }
+ }
+ // left is the index if found, or the insertion point otherwise.
+ // ~left is a shorthand for -left - 1.
+ return found ? left : ~left;
+};
+
+
+/**
+ * Sorts the specified array into ascending order. If no opt_compareFn is
+ * specified, elements are compared using
+ * <code>goog.array.defaultCompare</code>, which compares the elements using
+ * the built in < and > operators. This will produce the expected behavior
+ * for homogeneous arrays of String(s) and Number(s), unlike the native sort,
+ * but will give unpredictable results for heterogeneous lists of strings and
+ * numbers with different numbers of digits.
+ *
+ * This sort is not guaranteed to be stable.
+ *
+ * Runtime: Same as <code>Array.prototype.sort</code>
+ *
+ * @param {Array<T>} arr The array to be sorted.
+ * @param {?function(T,T):number=} opt_compareFn Optional comparison
+ * function by which the
+ * array is to be ordered. Should take 2 arguments to compare, and return a
+ * negative number, zero, or a positive number depending on whether the
+ * first argument is less than, equal to, or greater than the second.
+ * @template T
+ */
+goog.array.sort = function(arr, opt_compareFn) {
+ // TODO(arv): Update type annotation since null is not accepted.
+ arr.sort(opt_compareFn || goog.array.defaultCompare);
+};
+
+
+/**
+ * Sorts the specified array into ascending order in a stable way. If no
+ * opt_compareFn is specified, elements are compared using
+ * <code>goog.array.defaultCompare</code>, which compares the elements using
+ * the built in < and > operators. This will produce the expected behavior
+ * for homogeneous arrays of String(s) and Number(s).
+ *
+ * Runtime: Same as <code>Array.prototype.sort</code>, plus an additional
+ * O(n) overhead of copying the array twice.
+ *
+ * @param {Array<T>} arr The array to be sorted.
+ * @param {?function(T, T): number=} opt_compareFn Optional comparison function
+ * by which the array is to be ordered. Should take 2 arguments to compare,
+ * and return a negative number, zero, or a positive number depending on
+ * whether the first argument is less than, equal to, or greater than the
+ * second.
+ * @template T
+ */
+goog.array.stableSort = function(arr, opt_compareFn) {
+ var compArr = new Array(arr.length);
+ for (var i = 0; i < arr.length; i++) {
+ compArr[i] = {index: i, value: arr[i]};
+ }
+ var valueCompareFn = opt_compareFn || goog.array.defaultCompare;
+ function stableCompareFn(obj1, obj2) {
+ return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index;
+ }
+ goog.array.sort(compArr, stableCompareFn);
+ for (var i = 0; i < arr.length; i++) {
+ arr[i] = compArr[i].value;
+ }
+};
+
+
+/**
+ * Sort the specified array into ascending order based on item keys
+ * returned by the specified key function.
+ * If no opt_compareFn is specified, the keys are compared in ascending order
+ * using <code>goog.array.defaultCompare</code>.
+ *
+ * Runtime: O(S(f(n)), where S is runtime of <code>goog.array.sort</code>
+ * and f(n) is runtime of the key function.
+ *
+ * @param {Array<T>} arr The array to be sorted.
+ * @param {function(T): K} keyFn Function taking array element and returning
+ * a key used for sorting this element.
+ * @param {?function(K, K): number=} opt_compareFn Optional comparison function
+ * by which the keys are to be ordered. Should take 2 arguments to compare,
+ * and return a negative number, zero, or a positive number depending on
+ * whether the first argument is less than, equal to, or greater than the
+ * second.
+ * @template T,K
+ */
+goog.array.sortByKey = function(arr, keyFn, opt_compareFn) {
+ var keyCompareFn = opt_compareFn || goog.array.defaultCompare;
+ goog.array.sort(
+ arr, function(a, b) { return keyCompareFn(keyFn(a), keyFn(b)); });
+};
+
+
+/**
+ * Sorts an array of objects by the specified object key and compare
+ * function. If no compare function is provided, the key values are
+ * compared in ascending order using <code>goog.array.defaultCompare</code>.
+ * This won't work for keys that get renamed by the compiler. So use
+ * {'foo': 1, 'bar': 2} rather than {foo: 1, bar: 2}.
+ * @param {Array<Object>} arr An array of objects to sort.
+ * @param {string} key The object key to sort by.
+ * @param {Function=} opt_compareFn The function to use to compare key
+ * values.
+ */
+goog.array.sortObjectsByKey = function(arr, key, opt_compareFn) {
+ goog.array.sortByKey(arr, function(obj) { return obj[key]; }, opt_compareFn);
+};
+
+
+/**
+ * Tells if the array is sorted.
+ * @param {!Array<T>} arr The array.
+ * @param {?function(T,T):number=} opt_compareFn Function to compare the
+ * array elements.
+ * Should take 2 arguments to compare, and return a negative number, zero,
+ * or a positive number depending on whether the first argument is less
+ * than, equal to, or greater than the second.
+ * @param {boolean=} opt_strict If true no equal elements are allowed.
+ * @return {boolean} Whether the array is sorted.
+ * @template T
+ */
+goog.array.isSorted = function(arr, opt_compareFn, opt_strict) {
+ var compare = opt_compareFn || goog.array.defaultCompare;
+ for (var i = 1; i < arr.length; i++) {
+ var compareResult = compare(arr[i - 1], arr[i]);
+ if (compareResult > 0 || compareResult == 0 && opt_strict) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * Compares two arrays for equality. Two arrays are considered equal if they
+ * have the same length and their corresponding elements are equal according to
+ * the comparison function.
+ *
+ * @param {IArrayLike<?>} arr1 The first array to compare.
+ * @param {IArrayLike<?>} arr2 The second array to compare.
+ * @param {Function=} opt_equalsFn Optional comparison function.
+ * Should take 2 arguments to compare, and return true if the arguments
+ * are equal. Defaults to {@link goog.array.defaultCompareEquality} which
+ * compares the elements using the built-in '===' operator.
+ * @return {boolean} Whether the two arrays are equal.
+ */
+goog.array.equals = function(arr1, arr2, opt_equalsFn) {
+ if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) ||
+ arr1.length != arr2.length) {
+ return false;
+ }
+ var l = arr1.length;
+ var equalsFn = opt_equalsFn || goog.array.defaultCompareEquality;
+ for (var i = 0; i < l; i++) {
+ if (!equalsFn(arr1[i], arr2[i])) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * 3-way array compare function.
+ * @param {!IArrayLike<VALUE>} arr1 The first array to
+ * compare.
+ * @param {!IArrayLike<VALUE>} arr2 The second array to
+ * compare.
+ * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison
+ * function by which the array is to be ordered. Should take 2 arguments to
+ * compare, and return a negative number, zero, or a positive number
+ * depending on whether the first argument is less than, equal to, or
+ * greater than the second.
+ * @return {number} Negative number, zero, or a positive number depending on
+ * whether the first argument is less than, equal to, or greater than the
+ * second.
+ * @template VALUE
+ */
+goog.array.compare3 = function(arr1, arr2, opt_compareFn) {
+ var compare = opt_compareFn || goog.array.defaultCompare;
+ var l = Math.min(arr1.length, arr2.length);
+ for (var i = 0; i < l; i++) {
+ var result = compare(arr1[i], arr2[i]);
+ if (result != 0) {
+ return result;
+ }
+ }
+ return goog.array.defaultCompare(arr1.length, arr2.length);
+};
+
+
+/**
+ * Compares its two arguments for order, using the built in < and >
+ * operators.
+ * @param {VALUE} a The first object to be compared.
+ * @param {VALUE} b The second object to be compared.
+ * @return {number} A negative number, zero, or a positive number as the first
+ * argument is less than, equal to, or greater than the second,
+ * respectively.
+ * @template VALUE
+ */
+goog.array.defaultCompare = function(a, b) {
+ return a > b ? 1 : a < b ? -1 : 0;
+};
+
+
+/**
+ * Compares its two arguments for inverse order, using the built in < and >
+ * operators.
+ * @param {VALUE} a The first object to be compared.
+ * @param {VALUE} b The second object to be compared.
+ * @return {number} A negative number, zero, or a positive number as the first
+ * argument is greater than, equal to, or less than the second,
+ * respectively.
+ * @template VALUE
+ */
+goog.array.inverseDefaultCompare = function(a, b) {
+ return -goog.array.defaultCompare(a, b);
+};
+
+
+/**
+ * Compares its two arguments for equality, using the built in === operator.
+ * @param {*} a The first object to compare.
+ * @param {*} b The second object to compare.
+ * @return {boolean} True if the two arguments are equal, false otherwise.
+ */
+goog.array.defaultCompareEquality = function(a, b) {
+ return a === b;
+};
+
+
+/**
+ * Inserts a value into a sorted array. The array is not modified if the
+ * value is already present.
+ * @param {IArrayLike<VALUE>} array The array to modify.
+ * @param {VALUE} value The object to insert.
+ * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison
+ * function by which the array is ordered. Should take 2 arguments to
+ * compare, and return a negative number, zero, or a positive number
+ * depending on whether the first argument is less than, equal to, or
+ * greater than the second.
+ * @return {boolean} True if an element was inserted.
+ * @template VALUE
+ */
+goog.array.binaryInsert = function(array, value, opt_compareFn) {
+ var index = goog.array.binarySearch(array, value, opt_compareFn);
+ if (index < 0) {
+ goog.array.insertAt(array, value, -(index + 1));
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * Removes a value from a sorted array.
+ * @param {!IArrayLike<VALUE>} array The array to modify.
+ * @param {VALUE} value The object to remove.
+ * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison
+ * function by which the array is ordered. Should take 2 arguments to
+ * compare, and return a negative number, zero, or a positive number
+ * depending on whether the first argument is less than, equal to, or
+ * greater than the second.
+ * @return {boolean} True if an element was removed.
+ * @template VALUE
+ */
+goog.array.binaryRemove = function(array, value, opt_compareFn) {
+ var index = goog.array.binarySearch(array, value, opt_compareFn);
+ return (index >= 0) ? goog.array.removeAt(array, index) : false;
+};
+
+
+/**
+ * Splits an array into disjoint buckets according to a splitting function.
+ * @param {Array<T>} array The array.
+ * @param {function(this:S, T,number,Array<T>):?} sorter Function to call for
+ * every element. This takes 3 arguments (the element, the index and the
+ * array) and must return a valid object key (a string, number, etc), or
+ * undefined, if that object should not be placed in a bucket.
+ * @param {S=} opt_obj The object to be used as the value of 'this' within
+ * sorter.
+ * @return {!Object} An object, with keys being all of the unique return values
+ * of sorter, and values being arrays containing the items for
+ * which the splitter returned that key.
+ * @template T,S
+ */
+goog.array.bucket = function(array, sorter, opt_obj) {
+ var buckets = {};
+
+ for (var i = 0; i < array.length; i++) {
+ var value = array[i];
+ var key = sorter.call(/** @type {?} */ (opt_obj), value, i, array);
+ if (goog.isDef(key)) {
+ // Push the value to the right bucket, creating it if necessary.
+ var bucket = buckets[key] || (buckets[key] = []);
+ bucket.push(value);
+ }
+ }
+
+ return buckets;
+};
+
+
+/**
+ * Creates a new object built from the provided array and the key-generation
+ * function.
+ * @param {IArrayLike<T>} arr Array or array like object over
+ * which to iterate whose elements will be the values in the new object.
+ * @param {?function(this:S, T, number, ?) : string} keyFunc The function to
+ * call for every element. This function takes 3 arguments (the element, the
+ * index and the array) and should return a string that will be used as the
+ * key for the element in the new object. If the function returns the same
+ * key for more than one element, the value for that key is
+ * implementation-defined.
+ * @param {S=} opt_obj The object to be used as the value of 'this'
+ * within keyFunc.
+ * @return {!Object<T>} The new object.
+ * @template T,S
+ */
+goog.array.toObject = function(arr, keyFunc, opt_obj) {
+ var ret = {};
+ goog.array.forEach(arr, function(element, index) {
+ ret[keyFunc.call(/** @type {?} */ (opt_obj), element, index, arr)] =
+ element;
+ });
+ return ret;
+};
+
+
+/**
+ * Creates a range of numbers in an arithmetic progression.
+ *
+ * Range takes 1, 2, or 3 arguments:
+ * <pre>
+ * range(5) is the same as range(0, 5, 1) and produces [0, 1, 2, 3, 4]
+ * range(2, 5) is the same as range(2, 5, 1) and produces [2, 3, 4]
+ * range(-2, -5, -1) produces [-2, -3, -4]
+ * range(-2, -5, 1) produces [], since stepping by 1 wouldn't ever reach -5.
+ * </pre>
+ *
+ * @param {number} startOrEnd The starting value of the range if an end argument
+ * is provided. Otherwise, the start value is 0, and this is the end value.
+ * @param {number=} opt_end The optional end value of the range.
+ * @param {number=} opt_step The step size between range values. Defaults to 1
+ * if opt_step is undefined or 0.
+ * @return {!Array<number>} An array of numbers for the requested range. May be
+ * an empty array if adding the step would not converge toward the end
+ * value.
+ */
+goog.array.range = function(startOrEnd, opt_end, opt_step) {
+ var array = [];
+ var start = 0;
+ var end = startOrEnd;
+ var step = opt_step || 1;
+ if (opt_end !== undefined) {
+ start = startOrEnd;
+ end = opt_end;
+ }
+
+ if (step * (end - start) < 0) {
+ // Sign mismatch: start + step will never reach the end value.
+ return [];
+ }
+
+ if (step > 0) {
+ for (var i = start; i < end; i += step) {
+ array.push(i);
+ }
+ } else {
+ for (var i = start; i > end; i += step) {
+ array.push(i);
+ }
+ }
+ return array;
+};
+
+
+/**
+ * Returns an array consisting of the given value repeated N times.
+ *
+ * @param {VALUE} value The value to repeat.
+ * @param {number} n The repeat count.
+ * @return {!Array<VALUE>} An array with the repeated value.
+ * @template VALUE
+ */
+goog.array.repeat = function(value, n) {
+ var array = [];
+ for (var i = 0; i < n; i++) {
+ array[i] = value;
+ }
+ return array;
+};
+
+
+/**
+ * Returns an array consisting of every argument with all arrays
+ * expanded in-place recursively.
+ *
+ * @param {...*} var_args The values to flatten.
+ * @return {!Array<?>} An array containing the flattened values.
+ */
+goog.array.flatten = function(var_args) {
+ var CHUNK_SIZE = 8192;
+
+ var result = [];
+ for (var i = 0; i < arguments.length; i++) {
+ var element = arguments[i];
+ if (goog.isArray(element)) {
+ for (var c = 0; c < element.length; c += CHUNK_SIZE) {
+ var chunk = goog.array.slice(element, c, c + CHUNK_SIZE);
+ var recurseResult = goog.array.flatten.apply(null, chunk);
+ for (var r = 0; r < recurseResult.length; r++) {
+ result.push(recurseResult[r]);
+ }
+ }
+ } else {
+ result.push(element);
+ }
+ }
+ return result;
+};
+
+
+/**
+ * Rotates an array in-place. After calling this method, the element at
+ * index i will be the element previously at index (i - n) %
+ * array.length, for all values of i between 0 and array.length - 1,
+ * inclusive.
+ *
+ * For example, suppose list comprises [t, a, n, k, s]. After invoking
+ * rotate(array, 1) (or rotate(array, -4)), array will comprise [s, t, a, n, k].
+ *
+ * @param {!Array<T>} array The array to rotate.
+ * @param {number} n The amount to rotate.
+ * @return {!Array<T>} The array.
+ * @template T
+ */
+goog.array.rotate = function(array, n) {
+ goog.asserts.assert(array.length != null);
+
+ if (array.length) {
+ n %= array.length;
+ if (n > 0) {
+ Array.prototype.unshift.apply(array, array.splice(-n, n));
+ } else if (n < 0) {
+ Array.prototype.push.apply(array, array.splice(0, -n));
+ }
+ }
+ return array;
+};
+
+
+/**
+ * Moves one item of an array to a new position keeping the order of the rest
+ * of the items. Example use case: keeping a list of JavaScript objects
+ * synchronized with the corresponding list of DOM elements after one of the
+ * elements has been dragged to a new position.
+ * @param {!IArrayLike<?>} arr The array to modify.
+ * @param {number} fromIndex Index of the item to move between 0 and
+ * {@code arr.length - 1}.
+ * @param {number} toIndex Target index between 0 and {@code arr.length - 1}.
+ */
+goog.array.moveItem = function(arr, fromIndex, toIndex) {
+ goog.asserts.assert(fromIndex >= 0 && fromIndex < arr.length);
+ goog.asserts.assert(toIndex >= 0 && toIndex < arr.length);
+ // Remove 1 item at fromIndex.
+ var removedItems = Array.prototype.splice.call(arr, fromIndex, 1);
+ // Insert the removed item at toIndex.
+ Array.prototype.splice.call(arr, toIndex, 0, removedItems[0]);
+ // We don't use goog.array.insertAt and goog.array.removeAt, because they're
+ // significantly slower than splice.
+};
+
+
+/**
+ * Creates a new array for which the element at position i is an array of the
+ * ith element of the provided arrays. The returned array will only be as long
+ * as the shortest array provided; additional values are ignored. For example,
+ * the result of zipping [1, 2] and [3, 4, 5] is [[1,3], [2, 4]].
+ *
+ * This is similar to the zip() function in Python. See {@link
+ * http://docs.python.org/library/functions.html#zip}
+ *
+ * @param {...!IArrayLike<?>} var_args Arrays to be combined.
+ * @return {!Array<!Array<?>>} A new array of arrays created from
+ * provided arrays.
+ */
+goog.array.zip = function(var_args) {
+ if (!arguments.length) {
+ return [];
+ }
+ var result = [];
+ var minLen = arguments[0].length;
+ for (var i = 1; i < arguments.length; i++) {
+ if (arguments[i].length < minLen) {
+ minLen = arguments[i].length;
+ }
+ }
+ for (var i = 0; i < minLen; i++) {
+ var value = [];
+ for (var j = 0; j < arguments.length; j++) {
+ value.push(arguments[j][i]);
+ }
+ result.push(value);
+ }
+ return result;
+};
+
+
+/**
+ * Shuffles the values in the specified array using the Fisher-Yates in-place
+ * shuffle (also known as the Knuth Shuffle). By default, calls Math.random()
+ * and so resets the state of that random number generator. Similarly, may reset
+ * the state of the any other specified random number generator.
+ *
+ * Runtime: O(n)
+ *
+ * @param {!Array<?>} arr The array to be shuffled.
+ * @param {function():number=} opt_randFn Optional random function to use for
+ * shuffling.
+ * Takes no arguments, and returns a random number on the interval [0, 1).
+ * Defaults to Math.random() using JavaScript's built-in Math library.
+ */
+goog.array.shuffle = function(arr, opt_randFn) {
+ var randFn = opt_randFn || Math.random;
+
+ for (var i = arr.length - 1; i > 0; i--) {
+ // Choose a random array index in [0, i] (inclusive with i).
+ var j = Math.floor(randFn() * (i + 1));
+
+ var tmp = arr[i];
+ arr[i] = arr[j];
+ arr[j] = tmp;
+ }
+};
+
+
+/**
+ * Returns a new array of elements from arr, based on the indexes of elements
+ * provided by index_arr. For example, the result of index copying
+ * ['a', 'b', 'c'] with index_arr [1,0,0,2] is ['b', 'a', 'a', 'c'].
+ *
+ * @param {!Array<T>} arr The array to get a indexed copy from.
+ * @param {!Array<number>} index_arr An array of indexes to get from arr.
+ * @return {!Array<T>} A new array of elements from arr in index_arr order.
+ * @template T
+ */
+goog.array.copyByIndex = function(arr, index_arr) {
+ var result = [];
+ goog.array.forEach(index_arr, function(index) { result.push(arr[index]); });
+ return result;
+};
+
+
+/**
+ * Maps each element of the input array into zero or more elements of the output
+ * array.
+ *
+ * @param {!IArrayLike<VALUE>|string} arr Array or array like object
+ * over which to iterate.
+ * @param {function(this:THIS, VALUE, number, ?): !Array<RESULT>} f The function
+ * to call for every element. This function takes 3 arguments (the element,
+ * the index and the array) and should return an array. The result will be
+ * used to extend a new array.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.
+ * @return {!Array<RESULT>} a new array with the concatenation of all arrays
+ * returned from f.
+ * @template THIS, VALUE, RESULT
+ */
+goog.array.concatMap = function(arr, f, opt_obj) {
+ return goog.array.concat.apply([], goog.array.map(arr, f, opt_obj));
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Additional mathematical functions.
+ */
+
+goog.provide('goog.math');
+
+goog.require('goog.array');
+goog.require('goog.asserts');
+
+
+/**
+ * Returns a random integer greater than or equal to 0 and less than {@code a}.
+ * @param {number} a The upper bound for the random integer (exclusive).
+ * @return {number} A random integer N such that 0 <= N < a.
+ */
+goog.math.randomInt = function(a) {
+ return Math.floor(Math.random() * a);
+};
+
+
+/**
+ * Returns a random number greater than or equal to {@code a} and less than
+ * {@code b}.
+ * @param {number} a The lower bound for the random number (inclusive).
+ * @param {number} b The upper bound for the random number (exclusive).
+ * @return {number} A random number N such that a <= N < b.
+ */
+goog.math.uniformRandom = function(a, b) {
+ return a + Math.random() * (b - a);
+};
+
+
+/**
+ * Takes a number and clamps it to within the provided bounds.
+ * @param {number} value The input number.
+ * @param {number} min The minimum value to return.
+ * @param {number} max The maximum value to return.
+ * @return {number} The input number if it is within bounds, or the nearest
+ * number within the bounds.
+ */
+goog.math.clamp = function(value, min, max) {
+ return Math.min(Math.max(value, min), max);
+};
+
+
+/**
+ * The % operator in JavaScript returns the remainder of a / b, but differs from
+ * some other languages in that the result will have the same sign as the
+ * dividend. For example, -1 % 8 == -1, whereas in some other languages
+ * (such as Python) the result would be 7. This function emulates the more
+ * correct modulo behavior, which is useful for certain applications such as
+ * calculating an offset index in a circular list.
+ *
+ * @param {number} a The dividend.
+ * @param {number} b The divisor.
+ * @return {number} a % b where the result is between 0 and b (either 0 <= x < b
+ * or b < x <= 0, depending on the sign of b).
+ */
+goog.math.modulo = function(a, b) {
+ var r = a % b;
+ // If r and b differ in sign, add b to wrap the result to the correct sign.
+ return (r * b < 0) ? r + b : r;
+};
+
+
+/**
+ * Performs linear interpolation between values a and b. Returns the value
+ * between a and b proportional to x (when x is between 0 and 1. When x is
+ * outside this range, the return value is a linear extrapolation).
+ * @param {number} a A number.
+ * @param {number} b A number.
+ * @param {number} x The proportion between a and b.
+ * @return {number} The interpolated value between a and b.
+ */
+goog.math.lerp = function(a, b, x) {
+ return a + x * (b - a);
+};
+
+
+/**
+ * Tests whether the two values are equal to each other, within a certain
+ * tolerance to adjust for floating point errors.
+ * @param {number} a A number.
+ * @param {number} b A number.
+ * @param {number=} opt_tolerance Optional tolerance range. Defaults
+ * to 0.000001. If specified, should be greater than 0.
+ * @return {boolean} Whether {@code a} and {@code b} are nearly equal.
+ */
+goog.math.nearlyEquals = function(a, b, opt_tolerance) {
+ return Math.abs(a - b) <= (opt_tolerance || 0.000001);
+};
+
+
+// TODO(user): Rename to normalizeAngle, retaining old name as deprecated
+// alias.
+/**
+ * Normalizes an angle to be in range [0-360). Angles outside this range will
+ * be normalized to be the equivalent angle with that range.
+ * @param {number} angle Angle in degrees.
+ * @return {number} Standardized angle.
+ */
+goog.math.standardAngle = function(angle) {
+ return goog.math.modulo(angle, 360);
+};
+
+
+/**
+ * Normalizes an angle to be in range [0-2*PI). Angles outside this range will
+ * be normalized to be the equivalent angle with that range.
+ * @param {number} angle Angle in radians.
+ * @return {number} Standardized angle.
+ */
+goog.math.standardAngleInRadians = function(angle) {
+ return goog.math.modulo(angle, 2 * Math.PI);
+};
+
+
+/**
+ * Converts degrees to radians.
+ * @param {number} angleDegrees Angle in degrees.
+ * @return {number} Angle in radians.
+ */
+goog.math.toRadians = function(angleDegrees) {
+ return angleDegrees * Math.PI / 180;
+};
+
+
+/**
+ * Converts radians to degrees.
+ * @param {number} angleRadians Angle in radians.
+ * @return {number} Angle in degrees.
+ */
+goog.math.toDegrees = function(angleRadians) {
+ return angleRadians * 180 / Math.PI;
+};
+
+
+/**
+ * For a given angle and radius, finds the X portion of the offset.
+ * @param {number} degrees Angle in degrees (zero points in +X direction).
+ * @param {number} radius Radius.
+ * @return {number} The x-distance for the angle and radius.
+ */
+goog.math.angleDx = function(degrees, radius) {
+ return radius * Math.cos(goog.math.toRadians(degrees));
+};
+
+
+/**
+ * For a given angle and radius, finds the Y portion of the offset.
+ * @param {number} degrees Angle in degrees (zero points in +X direction).
+ * @param {number} radius Radius.
+ * @return {number} The y-distance for the angle and radius.
+ */
+goog.math.angleDy = function(degrees, radius) {
+ return radius * Math.sin(goog.math.toRadians(degrees));
+};
+
+
+/**
+ * Computes the angle between two points (x1,y1) and (x2,y2).
+ * Angle zero points in the +X direction, 90 degrees points in the +Y
+ * direction (down) and from there we grow clockwise towards 360 degrees.
+ * @param {number} x1 x of first point.
+ * @param {number} y1 y of first point.
+ * @param {number} x2 x of second point.
+ * @param {number} y2 y of second point.
+ * @return {number} Standardized angle in degrees of the vector from
+ * x1,y1 to x2,y2.
+ */
+goog.math.angle = function(x1, y1, x2, y2) {
+ return goog.math.standardAngle(
+ goog.math.toDegrees(Math.atan2(y2 - y1, x2 - x1)));
+};
+
+
+/**
+ * Computes the difference between startAngle and endAngle (angles in degrees).
+ * @param {number} startAngle Start angle in degrees.
+ * @param {number} endAngle End angle in degrees.
+ * @return {number} The number of degrees that when added to
+ * startAngle will result in endAngle. Positive numbers mean that the
+ * direction is clockwise. Negative numbers indicate a counter-clockwise
+ * direction.
+ * The shortest route (clockwise vs counter-clockwise) between the angles
+ * is used.
+ * When the difference is 180 degrees, the function returns 180 (not -180)
+ * angleDifference(30, 40) is 10, and angleDifference(40, 30) is -10.
+ * angleDifference(350, 10) is 20, and angleDifference(10, 350) is -20.
+ */
+goog.math.angleDifference = function(startAngle, endAngle) {
+ var d =
+ goog.math.standardAngle(endAngle) - goog.math.standardAngle(startAngle);
+ if (d > 180) {
+ d = d - 360;
+ } else if (d <= -180) {
+ d = 360 + d;
+ }
+ return d;
+};
+
+
+/**
+ * Returns the sign of a number as per the "sign" or "signum" function.
+ * @param {number} x The number to take the sign of.
+ * @return {number} -1 when negative, 1 when positive, 0 when 0. Preserves
+ * signed zeros and NaN.
+ */
+goog.math.sign = Math.sign || function(x) {
+ if (x > 0) {
+ return 1;
+ }
+ if (x < 0) {
+ return -1;
+ }
+ return x; // Preserves signed zeros and NaN.
+};
+
+
+/**
+ * JavaScript implementation of Longest Common Subsequence problem.
+ * http://en.wikipedia.org/wiki/Longest_common_subsequence
+ *
+ * Returns the longest possible array that is subarray of both of given arrays.
+ *
+ * @param {IArrayLike<S>} array1 First array of objects.
+ * @param {IArrayLike<T>} array2 Second array of objects.
+ * @param {Function=} opt_compareFn Function that acts as a custom comparator
+ * for the array ojects. Function should return true if objects are equal,
+ * otherwise false.
+ * @param {Function=} opt_collectorFn Function used to decide what to return
+ * as a result subsequence. It accepts 2 arguments: index of common element
+ * in the first array and index in the second. The default function returns
+ * element from the first array.
+ * @return {!Array<S|T>} A list of objects that are common to both arrays
+ * such that there is no common subsequence with size greater than the
+ * length of the list.
+ * @template S,T
+ */
+goog.math.longestCommonSubsequence = function(
+ array1, array2, opt_compareFn, opt_collectorFn) {
+
+ var compare = opt_compareFn || function(a, b) { return a == b; };
+
+ var collect = opt_collectorFn || function(i1, i2) { return array1[i1]; };
+
+ var length1 = array1.length;
+ var length2 = array2.length;
+
+ var arr = [];
+ for (var i = 0; i < length1 + 1; i++) {
+ arr[i] = [];
+ arr[i][0] = 0;
+ }
+
+ for (var j = 0; j < length2 + 1; j++) {
+ arr[0][j] = 0;
+ }
+
+ for (i = 1; i <= length1; i++) {
+ for (j = 1; j <= length2; j++) {
+ if (compare(array1[i - 1], array2[j - 1])) {
+ arr[i][j] = arr[i - 1][j - 1] + 1;
+ } else {
+ arr[i][j] = Math.max(arr[i - 1][j], arr[i][j - 1]);
+ }
+ }
+ }
+
+ // Backtracking
+ var result = [];
+ var i = length1, j = length2;
+ while (i > 0 && j > 0) {
+ if (compare(array1[i - 1], array2[j - 1])) {
+ result.unshift(collect(i - 1, j - 1));
+ i--;
+ j--;
+ } else {
+ if (arr[i - 1][j] > arr[i][j - 1]) {
+ i--;
+ } else {
+ j--;
+ }
+ }
+ }
+
+ return result;
+};
+
+
+/**
+ * Returns the sum of the arguments.
+ * @param {...number} var_args Numbers to add.
+ * @return {number} The sum of the arguments (0 if no arguments were provided,
+ * {@code NaN} if any of the arguments is not a valid number).
+ */
+goog.math.sum = function(var_args) {
+ return /** @type {number} */ (
+ goog.array.reduce(
+ arguments, function(sum, value) { return sum + value; }, 0));
+};
+
+
+/**
+ * Returns the arithmetic mean of the arguments.
+ * @param {...number} var_args Numbers to average.
+ * @return {number} The average of the arguments ({@code NaN} if no arguments
+ * were provided or any of the arguments is not a valid number).
+ */
+goog.math.average = function(var_args) {
+ return goog.math.sum.apply(null, arguments) / arguments.length;
+};
+
+
+/**
+ * Returns the unbiased sample variance of the arguments. For a definition,
+ * see e.g. http://en.wikipedia.org/wiki/Variance
+ * @param {...number} var_args Number samples to analyze.
+ * @return {number} The unbiased sample variance of the arguments (0 if fewer
+ * than two samples were provided, or {@code NaN} if any of the samples is
+ * not a valid number).
+ */
+goog.math.sampleVariance = function(var_args) {
+ var sampleSize = arguments.length;
+ if (sampleSize < 2) {
+ return 0;
+ }
+
+ var mean = goog.math.average.apply(null, arguments);
+ var variance =
+ goog.math.sum.apply(null, goog.array.map(arguments, function(val) {
+ return Math.pow(val - mean, 2);
+ })) / (sampleSize - 1);
+
+ return variance;
+};
+
+
+/**
+ * Returns the sample standard deviation of the arguments. For a definition of
+ * sample standard deviation, see e.g.
+ * http://en.wikipedia.org/wiki/Standard_deviation
+ * @param {...number} var_args Number samples to analyze.
+ * @return {number} The sample standard deviation of the arguments (0 if fewer
+ * than two samples were provided, or {@code NaN} if any of the samples is
+ * not a valid number).
+ */
+goog.math.standardDeviation = function(var_args) {
+ return Math.sqrt(goog.math.sampleVariance.apply(null, arguments));
+};
+
+
+/**
+ * Returns whether the supplied number represents an integer, i.e. that is has
+ * no fractional component. No range-checking is performed on the number.
+ * @param {number} num The number to test.
+ * @return {boolean} Whether {@code num} is an integer.
+ */
+goog.math.isInt = function(num) {
+ return isFinite(num) && num % 1 == 0;
+};
+
+
+/**
+ * Returns whether the supplied number is finite and not NaN.
+ * @param {number} num The number to test.
+ * @return {boolean} Whether {@code num} is a finite number.
+ */
+goog.math.isFiniteNumber = function(num) {
+ return isFinite(num) && !isNaN(num);
+};
+
+
+/**
+ * @param {number} num The number to test.
+ * @return {boolean} Whether it is negative zero.
+ */
+goog.math.isNegativeZero = function(num) {
+ return num == 0 && 1 / num < 0;
+};
+
+
+/**
+ * Returns the precise value of floor(log10(num)).
+ * Simpler implementations didn't work because of floating point rounding
+ * errors. For example
+ * <ul>
+ * <li>Math.floor(Math.log(num) / Math.LN10) is off by one for num == 1e+3.
+ * <li>Math.floor(Math.log(num) * Math.LOG10E) is off by one for num == 1e+15.
+ * <li>Math.floor(Math.log10(num)) is off by one for num == 1e+15 - 1.
+ * </ul>
+ * @param {number} num A floating point number.
+ * @return {number} Its logarithm to base 10 rounded down to the nearest
+ * integer if num > 0. -Infinity if num == 0. NaN if num < 0.
+ */
+goog.math.log10Floor = function(num) {
+ if (num > 0) {
+ var x = Math.round(Math.log(num) * Math.LOG10E);
+ return x - (parseFloat('1e' + x) > num ? 1 : 0);
+ }
+ return num == 0 ? -Infinity : NaN;
+};
+
+
+/**
+ * A tweaked variant of {@code Math.floor} which tolerates if the passed number
+ * is infinitesimally smaller than the closest integer. It often happens with
+ * the results of floating point calculations because of the finite precision
+ * of the intermediate results. For example {@code Math.floor(Math.log(1000) /
+ * Math.LN10) == 2}, not 3 as one would expect.
+ * @param {number} num A number.
+ * @param {number=} opt_epsilon An infinitesimally small positive number, the
+ * rounding error to tolerate.
+ * @return {number} The largest integer less than or equal to {@code num}.
+ */
+goog.math.safeFloor = function(num, opt_epsilon) {
+ goog.asserts.assert(!goog.isDef(opt_epsilon) || opt_epsilon > 0);
+ return Math.floor(num + (opt_epsilon || 2e-15));
+};
+
+
+/**
+ * A tweaked variant of {@code Math.ceil}. See {@code goog.math.safeFloor} for
+ * details.
+ * @param {number} num A number.
+ * @param {number=} opt_epsilon An infinitesimally small positive number, the
+ * rounding error to tolerate.
+ * @return {number} The smallest integer greater than or equal to {@code num}.
+ */
+goog.math.safeCeil = function(num, opt_epsilon) {
+ goog.asserts.assert(!goog.isDef(opt_epsilon) || opt_epsilon > 0);
+ return Math.ceil(num - (opt_epsilon || 2e-15));
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities related to color and color conversion.
+ */
+
+goog.provide('goog.color');
+goog.provide('goog.color.Hsl');
+goog.provide('goog.color.Hsv');
+goog.provide('goog.color.Rgb');
+
+goog.require('goog.color.names');
+goog.require('goog.math');
+
+
+/**
+ * RGB color representation. An array containing three elements [r, g, b],
+ * each an integer in [0, 255], representing the red, green, and blue components
+ * of the color respectively.
+ * @typedef {Array<number>}
+ */
+goog.color.Rgb;
+
+
+/**
+ * HSV color representation. An array containing three elements [h, s, v]:
+ * h (hue) must be an integer in [0, 360], cyclic.
+ * s (saturation) must be a number in [0, 1].
+ * v (value/brightness) must be an integer in [0, 255].
+ * @typedef {Array<number>}
+ */
+goog.color.Hsv;
+
+
+/**
+ * HSL color representation. An array containing three elements [h, s, l]:
+ * h (hue) must be an integer in [0, 360], cyclic.
+ * s (saturation) must be a number in [0, 1].
+ * l (lightness) must be a number in [0, 1].
+ * @typedef {Array<number>}
+ */
+goog.color.Hsl;
+
+
+/**
+ * Parses a color out of a string.
+ * @param {string} str Color in some format.
+ * @return {{hex: string, type: string}} 'hex' is a string containing a hex
+ * representation of the color, 'type' is a string containing the type
+ * of color format passed in ('hex', 'rgb', 'named').
+ */
+goog.color.parse = function(str) {
+ var result = {};
+ str = String(str);
+
+ var maybeHex = goog.color.prependHashIfNecessaryHelper(str);
+ if (goog.color.isValidHexColor_(maybeHex)) {
+ result.hex = goog.color.normalizeHex(maybeHex);
+ result.type = 'hex';
+ return result;
+ } else {
+ var rgb = goog.color.isValidRgbColor_(str);
+ if (rgb.length) {
+ result.hex = goog.color.rgbArrayToHex(rgb);
+ result.type = 'rgb';
+ return result;
+ } else if (goog.color.names) {
+ var hex = goog.color.names[str.toLowerCase()];
+ if (hex) {
+ result.hex = hex;
+ result.type = 'named';
+ return result;
+ }
+ }
+ }
+ throw Error(str + ' is not a valid color string');
+};
+
+
+/**
+ * Determines if the given string can be parsed as a color.
+ * {@see goog.color.parse}.
+ * @param {string} str Potential color string.
+ * @return {boolean} True if str is in a format that can be parsed to a color.
+ */
+goog.color.isValidColor = function(str) {
+ var maybeHex = goog.color.prependHashIfNecessaryHelper(str);
+ return !!(
+ goog.color.isValidHexColor_(maybeHex) ||
+ goog.color.isValidRgbColor_(str).length ||
+ goog.color.names && goog.color.names[str.toLowerCase()]);
+};
+
+
+/**
+ * Parses red, green, blue components out of a valid rgb color string.
+ * Throws Error if the color string is invalid.
+ * @param {string} str RGB representation of a color.
+ * {@see goog.color.isValidRgbColor_}.
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.parseRgb = function(str) {
+ var rgb = goog.color.isValidRgbColor_(str);
+ if (!rgb.length) {
+ throw Error(str + ' is not a valid RGB color');
+ }
+ return rgb;
+};
+
+
+/**
+ * Converts a hex representation of a color to RGB.
+ * @param {string} hexColor Color to convert.
+ * @return {string} string of the form 'rgb(R,G,B)' which can be used in
+ * styles.
+ */
+goog.color.hexToRgbStyle = function(hexColor) {
+ return goog.color.rgbStyle_(goog.color.hexToRgb(hexColor));
+};
+
+
+/**
+ * Regular expression for extracting the digits in a hex color triplet.
+ * @type {RegExp}
+ * @private
+ */
+goog.color.hexTripletRe_ = /#(.)(.)(.)/;
+
+
+/**
+ * Normalize an hex representation of a color
+ * @param {string} hexColor an hex color string.
+ * @return {string} hex color in the format '#rrggbb' with all lowercase
+ * literals.
+ */
+goog.color.normalizeHex = function(hexColor) {
+ if (!goog.color.isValidHexColor_(hexColor)) {
+ throw Error("'" + hexColor + "' is not a valid hex color");
+ }
+ if (hexColor.length == 4) { // of the form #RGB
+ hexColor = hexColor.replace(goog.color.hexTripletRe_, '#$1$1$2$2$3$3');
+ }
+ return hexColor.toLowerCase();
+};
+
+
+/**
+ * Converts a hex representation of a color to RGB.
+ * @param {string} hexColor Color to convert.
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.hexToRgb = function(hexColor) {
+ hexColor = goog.color.normalizeHex(hexColor);
+ var r = parseInt(hexColor.substr(1, 2), 16);
+ var g = parseInt(hexColor.substr(3, 2), 16);
+ var b = parseInt(hexColor.substr(5, 2), 16);
+
+ return [r, g, b];
+};
+
+
+/**
+ * Converts a color from RGB to hex representation.
+ * @param {number} r Amount of red, int between 0 and 255.
+ * @param {number} g Amount of green, int between 0 and 255.
+ * @param {number} b Amount of blue, int between 0 and 255.
+ * @return {string} hex representation of the color.
+ */
+goog.color.rgbToHex = function(r, g, b) {
+ r = Number(r);
+ g = Number(g);
+ b = Number(b);
+ if (r != (r & 255) || g != (g & 255) || b != (b & 255)) {
+ throw Error('"(' + r + ',' + g + ',' + b + '") is not a valid RGB color');
+ }
+ var hexR = goog.color.prependZeroIfNecessaryHelper(r.toString(16));
+ var hexG = goog.color.prependZeroIfNecessaryHelper(g.toString(16));
+ var hexB = goog.color.prependZeroIfNecessaryHelper(b.toString(16));
+ return '#' + hexR + hexG + hexB;
+};
+
+
+/**
+ * Converts a color from RGB to hex representation.
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @return {string} hex representation of the color.
+ */
+goog.color.rgbArrayToHex = function(rgb) {
+ return goog.color.rgbToHex(rgb[0], rgb[1], rgb[2]);
+};
+
+
+/**
+ * Converts a color from RGB color space to HSL color space.
+ * Modified from {@link http://en.wikipedia.org/wiki/HLS_color_space}.
+ * @param {number} r Value of red, in [0, 255].
+ * @param {number} g Value of green, in [0, 255].
+ * @param {number} b Value of blue, in [0, 255].
+ * @return {!goog.color.Hsl} hsl representation of the color.
+ */
+goog.color.rgbToHsl = function(r, g, b) {
+ // First must normalize r, g, b to be between 0 and 1.
+ var normR = r / 255;
+ var normG = g / 255;
+ var normB = b / 255;
+ var max = Math.max(normR, normG, normB);
+ var min = Math.min(normR, normG, normB);
+ var h = 0;
+ var s = 0;
+
+ // Luminosity is the average of the max and min rgb color intensities.
+ var l = 0.5 * (max + min);
+
+ // The hue and saturation are dependent on which color intensity is the max.
+ // If max and min are equal, the color is gray and h and s should be 0.
+ if (max != min) {
+ if (max == normR) {
+ h = 60 * (normG - normB) / (max - min);
+ } else if (max == normG) {
+ h = 60 * (normB - normR) / (max - min) + 120;
+ } else if (max == normB) {
+ h = 60 * (normR - normG) / (max - min) + 240;
+ }
+
+ if (0 < l && l <= 0.5) {
+ s = (max - min) / (2 * l);
+ } else {
+ s = (max - min) / (2 - 2 * l);
+ }
+ }
+
+ // Make sure the hue falls between 0 and 360.
+ return [Math.round(h + 360) % 360, s, l];
+};
+
+
+/**
+ * Converts a color from RGB color space to HSL color space.
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @return {!goog.color.Hsl} hsl representation of the color.
+ */
+goog.color.rgbArrayToHsl = function(rgb) {
+ return goog.color.rgbToHsl(rgb[0], rgb[1], rgb[2]);
+};
+
+
+/**
+ * Helper for hslToRgb.
+ * @param {number} v1 Helper variable 1.
+ * @param {number} v2 Helper variable 2.
+ * @param {number} vH Helper variable 3.
+ * @return {number} Appropriate RGB value, given the above.
+ * @private
+ */
+goog.color.hueToRgb_ = function(v1, v2, vH) {
+ if (vH < 0) {
+ vH += 1;
+ } else if (vH > 1) {
+ vH -= 1;
+ }
+ if ((6 * vH) < 1) {
+ return (v1 + (v2 - v1) * 6 * vH);
+ } else if (2 * vH < 1) {
+ return v2;
+ } else if (3 * vH < 2) {
+ return (v1 + (v2 - v1) * ((2 / 3) - vH) * 6);
+ }
+ return v1;
+};
+
+
+/**
+ * Converts a color from HSL color space to RGB color space.
+ * Modified from {@link http://www.easyrgb.com/math.html}
+ * @param {number} h Hue, in [0, 360].
+ * @param {number} s Saturation, in [0, 1].
+ * @param {number} l Luminosity, in [0, 1].
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.hslToRgb = function(h, s, l) {
+ var r = 0;
+ var g = 0;
+ var b = 0;
+ var normH = h / 360; // normalize h to fall in [0, 1]
+
+ if (s == 0) {
+ r = g = b = l * 255;
+ } else {
+ var temp1 = 0;
+ var temp2 = 0;
+ if (l < 0.5) {
+ temp2 = l * (1 + s);
+ } else {
+ temp2 = l + s - (s * l);
+ }
+ temp1 = 2 * l - temp2;
+ r = 255 * goog.color.hueToRgb_(temp1, temp2, normH + (1 / 3));
+ g = 255 * goog.color.hueToRgb_(temp1, temp2, normH);
+ b = 255 * goog.color.hueToRgb_(temp1, temp2, normH - (1 / 3));
+ }
+
+ return [Math.round(r), Math.round(g), Math.round(b)];
+};
+
+
+/**
+ * Converts a color from HSL color space to RGB color space.
+ * @param {goog.color.Hsl} hsl hsl representation of the color.
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.hslArrayToRgb = function(hsl) {
+ return goog.color.hslToRgb(hsl[0], hsl[1], hsl[2]);
+};
+
+
+/**
+ * Helper for isValidHexColor_.
+ * @type {RegExp}
+ * @private
+ */
+goog.color.validHexColorRe_ = /^#(?:[0-9a-f]{3}){1,2}$/i;
+
+
+/**
+ * Checks if a string is a valid hex color. We expect strings of the format
+ * #RRGGBB (ex: #1b3d5f) or #RGB (ex: #3CA == #33CCAA).
+ * @param {string} str String to check.
+ * @return {boolean} Whether the string is a valid hex color.
+ * @private
+ */
+goog.color.isValidHexColor_ = function(str) {
+ return goog.color.validHexColorRe_.test(str);
+};
+
+
+/**
+ * Helper for isNormalizedHexColor_.
+ * @type {RegExp}
+ * @private
+ */
+goog.color.normalizedHexColorRe_ = /^#[0-9a-f]{6}$/;
+
+
+/**
+ * Checks if a string is a normalized hex color.
+ * We expect strings of the format #RRGGBB (ex: #1b3d5f)
+ * using only lowercase letters.
+ * @param {string} str String to check.
+ * @return {boolean} Whether the string is a normalized hex color.
+ * @private
+ */
+goog.color.isNormalizedHexColor_ = function(str) {
+ return goog.color.normalizedHexColorRe_.test(str);
+};
+
+
+/**
+ * Regular expression for matching and capturing RGB style strings. Helper for
+ * isValidRgbColor_.
+ * @type {RegExp}
+ * @private
+ */
+goog.color.rgbColorRe_ =
+ /^(?:rgb)?\((0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2})\)$/i;
+
+
+/**
+ * Checks if a string is a valid rgb color. We expect strings of the format
+ * '(r, g, b)', or 'rgb(r, g, b)', where each color component is an int in
+ * [0, 255].
+ * @param {string} str String to check.
+ * @return {!goog.color.Rgb} the rgb representation of the color if it is
+ * a valid color, or the empty array otherwise.
+ * @private
+ */
+goog.color.isValidRgbColor_ = function(str) {
+ // Each component is separate (rather than using a repeater) so we can
+ // capture the match. Also, we explicitly set each component to be either 0,
+ // or start with a non-zero, to prevent octal numbers from slipping through.
+ var regExpResultArray = str.match(goog.color.rgbColorRe_);
+ if (regExpResultArray) {
+ var r = Number(regExpResultArray[1]);
+ var g = Number(regExpResultArray[2]);
+ var b = Number(regExpResultArray[3]);
+ if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255) {
+ return [r, g, b];
+ }
+ }
+ return [];
+};
+
+
+/**
+ * Takes a hex value and prepends a zero if it's a single digit.
+ * Small helper method for use by goog.color and friends.
+ * @param {string} hex Hex value to prepend if single digit.
+ * @return {string} hex value prepended with zero if it was single digit,
+ * otherwise the same value that was passed in.
+ */
+goog.color.prependZeroIfNecessaryHelper = function(hex) {
+ return hex.length == 1 ? '0' + hex : hex;
+};
+
+
+/**
+ * Takes a string a prepends a '#' sign if one doesn't exist.
+ * Small helper method for use by goog.color and friends.
+ * @param {string} str String to check.
+ * @return {string} The value passed in, prepended with a '#' if it didn't
+ * already have one.
+ */
+goog.color.prependHashIfNecessaryHelper = function(str) {
+ return str.charAt(0) == '#' ? str : '#' + str;
+};
+
+
+/**
+ * Takes an array of [r, g, b] and converts it into a string appropriate for
+ * CSS styles.
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @return {string} string of the form 'rgb(r,g,b)'.
+ * @private
+ */
+goog.color.rgbStyle_ = function(rgb) {
+ return 'rgb(' + rgb.join(',') + ')';
+};
+
+
+/**
+ * Converts an HSV triplet to an RGB array. V is brightness because b is
+ * reserved for blue in RGB.
+ * @param {number} h Hue value in [0, 360].
+ * @param {number} s Saturation value in [0, 1].
+ * @param {number} brightness brightness in [0, 255].
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.hsvToRgb = function(h, s, brightness) {
+ var red = 0;
+ var green = 0;
+ var blue = 0;
+ if (s == 0) {
+ red = brightness;
+ green = brightness;
+ blue = brightness;
+ } else {
+ var sextant = Math.floor(h / 60);
+ var remainder = (h / 60) - sextant;
+ var val1 = brightness * (1 - s);
+ var val2 = brightness * (1 - (s * remainder));
+ var val3 = brightness * (1 - (s * (1 - remainder)));
+ switch (sextant) {
+ case 1:
+ red = val2;
+ green = brightness;
+ blue = val1;
+ break;
+ case 2:
+ red = val1;
+ green = brightness;
+ blue = val3;
+ break;
+ case 3:
+ red = val1;
+ green = val2;
+ blue = brightness;
+ break;
+ case 4:
+ red = val3;
+ green = val1;
+ blue = brightness;
+ break;
+ case 5:
+ red = brightness;
+ green = val1;
+ blue = val2;
+ break;
+ case 6:
+ case 0:
+ red = brightness;
+ green = val3;
+ blue = val1;
+ break;
+ }
+ }
+
+ return [Math.floor(red), Math.floor(green), Math.floor(blue)];
+};
+
+
+/**
+ * Converts from RGB values to an array of HSV values.
+ * @param {number} red Red value in [0, 255].
+ * @param {number} green Green value in [0, 255].
+ * @param {number} blue Blue value in [0, 255].
+ * @return {!goog.color.Hsv} hsv representation of the color.
+ */
+goog.color.rgbToHsv = function(red, green, blue) {
+
+ var max = Math.max(Math.max(red, green), blue);
+ var min = Math.min(Math.min(red, green), blue);
+ var hue;
+ var saturation;
+ var value = max;
+ if (min == max) {
+ hue = 0;
+ saturation = 0;
+ } else {
+ var delta = (max - min);
+ saturation = delta / max;
+
+ if (red == max) {
+ hue = (green - blue) / delta;
+ } else if (green == max) {
+ hue = 2 + ((blue - red) / delta);
+ } else {
+ hue = 4 + ((red - green) / delta);
+ }
+ hue *= 60;
+ if (hue < 0) {
+ hue += 360;
+ }
+ if (hue > 360) {
+ hue -= 360;
+ }
+ }
+
+ return [hue, saturation, value];
+};
+
+
+/**
+ * Converts from an array of RGB values to an array of HSV values.
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @return {!goog.color.Hsv} hsv representation of the color.
+ */
+goog.color.rgbArrayToHsv = function(rgb) {
+ return goog.color.rgbToHsv(rgb[0], rgb[1], rgb[2]);
+};
+
+
+/**
+ * Converts an HSV triplet to an RGB array.
+ * @param {goog.color.Hsv} hsv hsv representation of the color.
+ * @return {!goog.color.Rgb} rgb representation of the color.
+ */
+goog.color.hsvArrayToRgb = function(hsv) {
+ return goog.color.hsvToRgb(hsv[0], hsv[1], hsv[2]);
+};
+
+
+/**
+ * Converts a hex representation of a color to HSL.
+ * @param {string} hex Color to convert.
+ * @return {!goog.color.Hsv} hsv representation of the color.
+ */
+goog.color.hexToHsl = function(hex) {
+ var rgb = goog.color.hexToRgb(hex);
+ return goog.color.rgbToHsl(rgb[0], rgb[1], rgb[2]);
+};
+
+
+/**
+ * Converts from h,s,l values to a hex string
+ * @param {number} h Hue, in [0, 360].
+ * @param {number} s Saturation, in [0, 1].
+ * @param {number} l Luminosity, in [0, 1].
+ * @return {string} hex representation of the color.
+ */
+goog.color.hslToHex = function(h, s, l) {
+ return goog.color.rgbArrayToHex(goog.color.hslToRgb(h, s, l));
+};
+
+
+/**
+ * Converts from an hsl array to a hex string
+ * @param {goog.color.Hsl} hsl hsl representation of the color.
+ * @return {string} hex representation of the color.
+ */
+goog.color.hslArrayToHex = function(hsl) {
+ return goog.color.rgbArrayToHex(goog.color.hslToRgb(hsl[0], hsl[1], hsl[2]));
+};
+
+
+/**
+ * Converts a hex representation of a color to HSV
+ * @param {string} hex Color to convert.
+ * @return {!goog.color.Hsv} hsv representation of the color.
+ */
+goog.color.hexToHsv = function(hex) {
+ return goog.color.rgbArrayToHsv(goog.color.hexToRgb(hex));
+};
+
+
+/**
+ * Converts from h,s,v values to a hex string
+ * @param {number} h Hue, in [0, 360].
+ * @param {number} s Saturation, in [0, 1].
+ * @param {number} v Value, in [0, 255].
+ * @return {string} hex representation of the color.
+ */
+goog.color.hsvToHex = function(h, s, v) {
+ return goog.color.rgbArrayToHex(goog.color.hsvToRgb(h, s, v));
+};
+
+
+/**
+ * Converts from an HSV array to a hex string
+ * @param {goog.color.Hsv} hsv hsv representation of the color.
+ * @return {string} hex representation of the color.
+ */
+goog.color.hsvArrayToHex = function(hsv) {
+ return goog.color.hsvToHex(hsv[0], hsv[1], hsv[2]);
+};
+
+
+/**
+ * Calculates the Euclidean distance between two color vectors on an HSL sphere.
+ * A demo of the sphere can be found at:
+ * http://en.wikipedia.org/wiki/HSL_color_space
+ * In short, a vector for color (H, S, L) in this system can be expressed as
+ * (S*L'*cos(2*PI*H), S*L'*sin(2*PI*H), L), where L' = abs(L - 0.5), and we
+ * simply calculate the 1-2 distance using these coordinates
+ * @param {goog.color.Hsl} hsl1 First color in hsl representation.
+ * @param {goog.color.Hsl} hsl2 Second color in hsl representation.
+ * @return {number} Distance between the two colors, in the range [0, 1].
+ */
+goog.color.hslDistance = function(hsl1, hsl2) {
+ var sl1, sl2;
+ if (hsl1[2] <= 0.5) {
+ sl1 = hsl1[1] * hsl1[2];
+ } else {
+ sl1 = hsl1[1] * (1.0 - hsl1[2]);
+ }
+
+ if (hsl2[2] <= 0.5) {
+ sl2 = hsl2[1] * hsl2[2];
+ } else {
+ sl2 = hsl2[1] * (1.0 - hsl2[2]);
+ }
+
+ var h1 = hsl1[0] / 360.0;
+ var h2 = hsl2[0] / 360.0;
+ var dh = (h1 - h2) * 2.0 * Math.PI;
+ return (hsl1[2] - hsl2[2]) * (hsl1[2] - hsl2[2]) + sl1 * sl1 + sl2 * sl2 -
+ 2 * sl1 * sl2 * Math.cos(dh);
+};
+
+
+/**
+ * Blend two colors together, using the specified factor to indicate the weight
+ * given to the first color
+ * @param {goog.color.Rgb} rgb1 First color represented in rgb.
+ * @param {goog.color.Rgb} rgb2 Second color represented in rgb.
+ * @param {number} factor The weight to be given to rgb1 over rgb2. Values
+ * should be in the range [0, 1]. If less than 0, factor will be set to 0.
+ * If greater than 1, factor will be set to 1.
+ * @return {!goog.color.Rgb} Combined color represented in rgb.
+ */
+goog.color.blend = function(rgb1, rgb2, factor) {
+ factor = goog.math.clamp(factor, 0, 1);
+
+ return [
+ Math.round(factor * rgb1[0] + (1.0 - factor) * rgb2[0]),
+ Math.round(factor * rgb1[1] + (1.0 - factor) * rgb2[1]),
+ Math.round(factor * rgb1[2] + (1.0 - factor) * rgb2[2])
+ ];
+};
+
+
+/**
+ * Adds black to the specified color, darkening it
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @param {number} factor Number in the range [0, 1]. 0 will do nothing, while
+ * 1 will return black. If less than 0, factor will be set to 0. If greater
+ * than 1, factor will be set to 1.
+ * @return {!goog.color.Rgb} Combined rgb color.
+ */
+goog.color.darken = function(rgb, factor) {
+ var black = [0, 0, 0];
+ return goog.color.blend(black, rgb, factor);
+};
+
+
+/**
+ * Adds white to the specified color, lightening it
+ * @param {goog.color.Rgb} rgb rgb representation of the color.
+ * @param {number} factor Number in the range [0, 1]. 0 will do nothing, while
+ * 1 will return white. If less than 0, factor will be set to 0. If greater
+ * than 1, factor will be set to 1.
+ * @return {!goog.color.Rgb} Combined rgb color.
+ */
+goog.color.lighten = function(rgb, factor) {
+ var white = [255, 255, 255];
+ return goog.color.blend(white, rgb, factor);
+};
+
+
+/**
+ * Find the "best" (highest-contrast) of the suggested colors for the prime
+ * color. Uses W3C formula for judging readability and visual accessibility:
+ * http://www.w3.org/TR/AERT#color-contrast
+ * @param {goog.color.Rgb} prime Color represented as a rgb array.
+ * @param {Array<goog.color.Rgb>} suggestions Array of colors,
+ * each representing a rgb array.
+ * @return {!goog.color.Rgb} Highest-contrast color represented by an array..
+ */
+goog.color.highContrast = function(prime, suggestions) {
+ var suggestionsWithDiff = [];
+ for (var i = 0; i < suggestions.length; i++) {
+ suggestionsWithDiff.push({
+ color: suggestions[i],
+ diff: goog.color.yiqBrightnessDiff_(suggestions[i], prime) +
+ goog.color.colorDiff_(suggestions[i], prime)
+ });
+ }
+ suggestionsWithDiff.sort(function(a, b) { return b.diff - a.diff; });
+ return suggestionsWithDiff[0].color;
+};
+
+
+/**
+ * Calculate brightness of a color according to YIQ formula (brightness is Y).
+ * More info on YIQ here: http://en.wikipedia.org/wiki/YIQ. Helper method for
+ * goog.color.highContrast()
+ * @param {goog.color.Rgb} rgb Color represented by a rgb array.
+ * @return {number} brightness (Y).
+ * @private
+ */
+goog.color.yiqBrightness_ = function(rgb) {
+ return Math.round((rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000);
+};
+
+
+/**
+ * Calculate difference in brightness of two colors. Helper method for
+ * goog.color.highContrast()
+ * @param {goog.color.Rgb} rgb1 Color represented by a rgb array.
+ * @param {goog.color.Rgb} rgb2 Color represented by a rgb array.
+ * @return {number} Brightness difference.
+ * @private
+ */
+goog.color.yiqBrightnessDiff_ = function(rgb1, rgb2) {
+ return Math.abs(
+ goog.color.yiqBrightness_(rgb1) - goog.color.yiqBrightness_(rgb2));
+};
+
+
+/**
+ * Calculate color difference between two colors. Helper method for
+ * goog.color.highContrast()
+ * @param {goog.color.Rgb} rgb1 Color represented by a rgb array.
+ * @param {goog.color.Rgb} rgb2 Color represented by a rgb array.
+ * @return {number} Color difference.
+ * @private
+ */
+goog.color.colorDiff_ = function(rgb1, rgb2) {
+ return Math.abs(rgb1[0] - rgb2[0]) + Math.abs(rgb1[1] - rgb2[1]) +
+ Math.abs(rgb1[2] - rgb2[2]);
+};
+
+// We can't use goog.color or goog.color.alpha because they interally use a hex
+// string representation that encodes each channel in a single byte. This
+// causes occasional loss of precision and rounding errors, especially in the
+// alpha channel.
+
+goog.provide('ol.color');
+
+goog.require('goog.asserts');
+goog.require('goog.color');
+goog.require('goog.color.names');
+goog.require('ol');
+goog.require('ol.math');
+
+
+/**
+ * This RegExp matches # followed by 3 or 6 hex digits.
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.color.hexColorRe_ = /^#(?:[0-9a-f]{3}){1,2}$/i;
+
+
+/**
+ * @see goog.color.rgbColorRe_
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.color.rgbColorRe_ =
+ /^(?:rgb)?\((0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2})\)$/i;
+
+
+/**
+ * @see goog.color.alpha.rgbaColorRe_
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.color.rgbaColorRe_ =
+ /^(?:rgba)?\((0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2}),\s?(0|[1-9]\d{0,2}),\s?(0|1|0\.\d{0,10})\)$/i;
+
+
+/**
+ * Return the color as an array. This function maintains a cache of calculated
+ * arrays which means the result should not be modified.
+ * @param {ol.Color|string} color Color.
+ * @return {ol.Color} Color.
+ * @api
+ */
+ol.color.asArray = function(color) {
+ if (Array.isArray(color)) {
+ return color;
+ } else {
+ goog.asserts.assert(typeof color === 'string', 'Color should be a string');
+ return ol.color.fromString(color);
+ }
+};
+
+
+/**
+ * Return the color as an rgba string.
+ * @param {ol.Color|string} color Color.
+ * @return {string} Rgba string.
+ * @api
+ */
+ol.color.asString = function(color) {
+ if (typeof color === 'string') {
+ return color;
+ } else {
+ goog.asserts.assert(Array.isArray(color), 'Color should be an array');
+ return ol.color.toString(color);
+ }
+};
+
+
+/**
+ * @param {string} s String.
+ * @return {ol.Color} Color.
+ */
+ol.color.fromString = (
+ function() {
+
+ // We maintain a small cache of parsed strings. To provide cheap LRU-like
+ // semantics, whenever the cache grows too large we simply delete an
+ // arbitrary 25% of the entries.
+
+ /**
+ * @const
+ * @type {number}
+ */
+ var MAX_CACHE_SIZE = 1024;
+
+ /**
+ * @type {Object.<string, ol.Color>}
+ */
+ var cache = {};
+
+ /**
+ * @type {number}
+ */
+ var cacheSize = 0;
+
+ return (
+ /**
+ * @param {string} s String.
+ * @return {ol.Color} Color.
+ */
+ function(s) {
+ var color;
+ if (cache.hasOwnProperty(s)) {
+ color = cache[s];
+ } else {
+ if (cacheSize >= MAX_CACHE_SIZE) {
+ var i = 0;
+ var key;
+ for (key in cache) {
+ if ((i++ & 3) === 0) {
+ delete cache[key];
+ --cacheSize;
+ }
+ }
+ }
+ color = ol.color.fromStringInternal_(s);
+ cache[s] = color;
+ ++cacheSize;
+ }
+ return color;
+ });
+
+ })();
+
+
+/**
+ * @param {string} s String.
+ * @private
+ * @return {ol.Color} Color.
+ */
+ol.color.fromStringInternal_ = function(s) {
+
+ var isHex = false;
+ if (ol.ENABLE_NAMED_COLORS && goog.color.names.hasOwnProperty(s)) {
+ s = goog.color.names[s];
+ isHex = true;
+ }
+
+ var r, g, b, a, color, match;
+ if (isHex || (match = ol.color.hexColorRe_.exec(s))) { // hex
+ var n = s.length - 1; // number of hex digits
+ goog.asserts.assert(n == 3 || n == 6,
+ 'Color string length should be 3 or 6');
+ var d = n == 3 ? 1 : 2; // number of digits per channel
+ r = parseInt(s.substr(1 + 0 * d, d), 16);
+ g = parseInt(s.substr(1 + 1 * d, d), 16);
+ b = parseInt(s.substr(1 + 2 * d, d), 16);
+ if (d == 1) {
+ r = (r << 4) + r;
+ g = (g << 4) + g;
+ b = (b << 4) + b;
+ }
+ a = 1;
+ color = [r, g, b, a];
+ goog.asserts.assert(ol.color.isValid(color),
+ 'Color should be a valid color');
+ return color;
+ } else if ((match = ol.color.rgbaColorRe_.exec(s))) { // rgba()
+ r = Number(match[1]);
+ g = Number(match[2]);
+ b = Number(match[3]);
+ a = Number(match[4]);
+ color = [r, g, b, a];
+ return ol.color.normalize(color, color);
+ } else if ((match = ol.color.rgbColorRe_.exec(s))) { // rgb()
+ r = Number(match[1]);
+ g = Number(match[2]);
+ b = Number(match[3]);
+ color = [r, g, b, 1];
+ return ol.color.normalize(color, color);
+ } else {
+ goog.asserts.fail(s + ' is not a valid color');
+ }
+
+};
+
+
+/**
+ * @param {ol.Color} color Color.
+ * @return {boolean} Is valid.
+ */
+ol.color.isValid = function(color) {
+ return 0 <= color[0] && color[0] < 256 &&
+ 0 <= color[1] && color[1] < 256 &&
+ 0 <= color[2] && color[2] < 256 &&
+ 0 <= color[3] && color[3] <= 1;
+};
+
+
+/**
+ * @param {ol.Color} color Color.
+ * @param {ol.Color=} opt_color Color.
+ * @return {ol.Color} Clamped color.
+ */
+ol.color.normalize = function(color, opt_color) {
+ var result = opt_color || [];
+ result[0] = ol.math.clamp((color[0] + 0.5) | 0, 0, 255);
+ result[1] = ol.math.clamp((color[1] + 0.5) | 0, 0, 255);
+ result[2] = ol.math.clamp((color[2] + 0.5) | 0, 0, 255);
+ result[3] = ol.math.clamp(color[3], 0, 1);
+ return result;
+};
+
+
+/**
+ * @param {ol.Color} color Color.
+ * @return {string} String.
+ */
+ol.color.toString = function(color) {
+ var r = color[0];
+ if (r != (r | 0)) {
+ r = (r + 0.5) | 0;
+ }
+ var g = color[1];
+ if (g != (g | 0)) {
+ g = (g + 0.5) | 0;
+ }
+ var b = color[2];
+ if (b != (b | 0)) {
+ b = (b + 0.5) | 0;
+ }
+ var a = color[3] === undefined ? 1 : color[3];
+ return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
+};
+
+goog.provide('ol.colorlike');
+
+goog.require('ol.color');
+
+
+/**
+ * @param {ol.Color|ol.ColorLike} color Color.
+ * @return {ol.ColorLike} The color as an ol.ColorLike
+ * @api
+ */
+ol.colorlike.asColorLike = function(color) {
+ if (ol.colorlike.isColorLike(color)) {
+ return /** @type {string|CanvasPattern|CanvasGradient} */ (color);
+ } else {
+ return ol.color.asString(/** @type {ol.Color} */ (color));
+ }
+};
+
+
+/**
+ * @param {?} color The value that is potentially an ol.ColorLike
+ * @return {boolean} Whether the color is an ol.ColorLike
+ */
+ol.colorlike.isColorLike = function(color) {
+ return (
+ typeof color === 'string' ||
+ color instanceof CanvasPattern ||
+ color instanceof CanvasGradient
+ );
+};
+
+// Copyright 2013 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities used by goog.labs.userAgent tools. These functions
+ * should not be used outside of goog.labs.userAgent.*.
+ *
+ *
+ * @author nnaze@google.com (Nathan Naze)
+ */
+
+goog.provide('goog.labs.userAgent.util');
+
+goog.require('goog.string');
+
+
+/**
+ * Gets the native userAgent string from navigator if it exists.
+ * If navigator or navigator.userAgent string is missing, returns an empty
+ * string.
+ * @return {string}
+ * @private
+ */
+goog.labs.userAgent.util.getNativeUserAgentString_ = function() {
+ var navigator = goog.labs.userAgent.util.getNavigator_();
+ if (navigator) {
+ var userAgent = navigator.userAgent;
+ if (userAgent) {
+ return userAgent;
+ }
+ }
+ return '';
+};
+
+
+/**
+ * Getter for the native navigator.
+ * This is a separate function so it can be stubbed out in testing.
+ * @return {Navigator}
+ * @private
+ */
+goog.labs.userAgent.util.getNavigator_ = function() {
+ return goog.global.navigator;
+};
+
+
+/**
+ * A possible override for applications which wish to not check
+ * navigator.userAgent but use a specified value for detection instead.
+ * @private {string}
+ */
+goog.labs.userAgent.util.userAgent_ =
+ goog.labs.userAgent.util.getNativeUserAgentString_();
+
+
+/**
+ * Applications may override browser detection on the built in
+ * navigator.userAgent object by setting this string. Set to null to use the
+ * browser object instead.
+ * @param {?string=} opt_userAgent The User-Agent override.
+ */
+goog.labs.userAgent.util.setUserAgent = function(opt_userAgent) {
+ goog.labs.userAgent.util.userAgent_ =
+ opt_userAgent || goog.labs.userAgent.util.getNativeUserAgentString_();
+};
+
+
+/**
+ * @return {string} The user agent string.
+ */
+goog.labs.userAgent.util.getUserAgent = function() {
+ return goog.labs.userAgent.util.userAgent_;
+};
+
+
+/**
+ * @param {string} str
+ * @return {boolean} Whether the user agent contains the given string, ignoring
+ * case.
+ */
+goog.labs.userAgent.util.matchUserAgent = function(str) {
+ var userAgent = goog.labs.userAgent.util.getUserAgent();
+ return goog.string.contains(userAgent, str);
+};
+
+
+/**
+ * @param {string} str
+ * @return {boolean} Whether the user agent contains the given string.
+ */
+goog.labs.userAgent.util.matchUserAgentIgnoreCase = function(str) {
+ var userAgent = goog.labs.userAgent.util.getUserAgent();
+ return goog.string.caseInsensitiveContains(userAgent, str);
+};
+
+
+/**
+ * Parses the user agent into tuples for each section.
+ * @param {string} userAgent
+ * @return {!Array<!Array<string>>} Tuples of key, version, and the contents
+ * of the parenthetical.
+ */
+goog.labs.userAgent.util.extractVersionTuples = function(userAgent) {
+ // Matches each section of a user agent string.
+ // Example UA:
+ // Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us)
+ // AppleWebKit/531.21.10 (KHTML, like Gecko) Mobile/7B405
+ // This has three version tuples: Mozilla, AppleWebKit, and Mobile.
+
+ var versionRegExp = new RegExp(
+ // Key. Note that a key may have a space.
+ // (i.e. 'Mobile Safari' in 'Mobile Safari/5.0')
+ '(\\w[\\w ]+)' +
+
+ '/' + // slash
+ '([^\\s]+)' + // version (i.e. '5.0b')
+ '\\s*' + // whitespace
+ '(?:\\((.*?)\\))?', // parenthetical info. parentheses not matched.
+ 'g');
+
+ var data = [];
+ var match;
+
+ // Iterate and collect the version tuples. Each iteration will be the
+ // next regex match.
+ while (match = versionRegExp.exec(userAgent)) {
+ data.push([
+ match[1], // key
+ match[2], // value
+ // || undefined as this is not undefined in IE7 and IE8
+ match[3] || undefined // info
+ ]);
+ }
+
+ return data;
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities for manipulating objects/maps/hashes.
+ * @author arv@google.com (Erik Arvidsson)
+ */
+
+goog.provide('goog.object');
+
+
+/**
+ * Whether two values are not observably distinguishable. This
+ * correctly detects that 0 is not the same as -0 and two NaNs are
+ * practically equivalent.
+ *
+ * The implementation is as suggested by harmony:egal proposal.
+ *
+ * @param {*} v The first value to compare.
+ * @param {*} v2 The second value to compare.
+ * @return {boolean} Whether two values are not observably distinguishable.
+ * @see http://wiki.ecmascript.org/doku.php?id=harmony:egal
+ */
+goog.object.is = function(v, v2) {
+ if (v === v2) {
+ // 0 === -0, but they are not identical.
+ // We need the cast because the compiler requires that v2 is a
+ // number (although 1/v2 works with non-number). We cast to ? to
+ // stop the compiler from type-checking this statement.
+ return v !== 0 || 1 / v === 1 / /** @type {?} */ (v2);
+ }
+
+ // NaN is non-reflexive: NaN !== NaN, although they are identical.
+ return v !== v && v2 !== v2;
+};
+
+
+/**
+ * Calls a function for each element in an object/map/hash.
+ *
+ * @param {Object<K,V>} obj The object over which to iterate.
+ * @param {function(this:T,V,?,Object<K,V>):?} f The function to call
+ * for every element. This function takes 3 arguments (the value, the
+ * key and the object) and the return value is ignored.
+ * @param {T=} opt_obj This is used as the 'this' object within f.
+ * @template T,K,V
+ */
+goog.object.forEach = function(obj, f, opt_obj) {
+ for (var key in obj) {
+ f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);
+ }
+};
+
+
+/**
+ * Calls a function for each element in an object/map/hash. If that call returns
+ * true, adds the element to a new object.
+ *
+ * @param {Object<K,V>} obj The object over which to iterate.
+ * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to call
+ * for every element. This
+ * function takes 3 arguments (the value, the key and the object)
+ * and should return a boolean. If the return value is true the
+ * element is added to the result object. If it is false the
+ * element is not included.
+ * @param {T=} opt_obj This is used as the 'this' object within f.
+ * @return {!Object<K,V>} a new object in which only elements that passed the
+ * test are present.
+ * @template T,K,V
+ */
+goog.object.filter = function(obj, f, opt_obj) {
+ var res = {};
+ for (var key in obj) {
+ if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {
+ res[key] = obj[key];
+ }
+ }
+ return res;
+};
+
+
+/**
+ * For every element in an object/map/hash calls a function and inserts the
+ * result into a new object.
+ *
+ * @param {Object<K,V>} obj The object over which to iterate.
+ * @param {function(this:T,V,?,Object<K,V>):R} f The function to call
+ * for every element. This function
+ * takes 3 arguments (the value, the key and the object)
+ * and should return something. The result will be inserted
+ * into a new object.
+ * @param {T=} opt_obj This is used as the 'this' object within f.
+ * @return {!Object<K,R>} a new object with the results from f.
+ * @template T,K,V,R
+ */
+goog.object.map = function(obj, f, opt_obj) {
+ var res = {};
+ for (var key in obj) {
+ res[key] = f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);
+ }
+ return res;
+};
+
+
+/**
+ * Calls a function for each element in an object/map/hash. If any
+ * call returns true, returns true (without checking the rest). If
+ * all calls return false, returns false.
+ *
+ * @param {Object<K,V>} obj The object to check.
+ * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to
+ * call for every element. This function
+ * takes 3 arguments (the value, the key and the object) and should
+ * return a boolean.
+ * @param {T=} opt_obj This is used as the 'this' object within f.
+ * @return {boolean} true if any element passes the test.
+ * @template T,K,V
+ */
+goog.object.some = function(obj, f, opt_obj) {
+ for (var key in obj) {
+ if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Calls a function for each element in an object/map/hash. If
+ * all calls return true, returns true. If any call returns false, returns
+ * false at this point and does not continue to check the remaining elements.
+ *
+ * @param {Object<K,V>} obj The object to check.
+ * @param {?function(this:T,V,?,Object<K,V>):boolean} f The function to
+ * call for every element. This function
+ * takes 3 arguments (the value, the key and the object) and should
+ * return a boolean.
+ * @param {T=} opt_obj This is used as the 'this' object within f.
+ * @return {boolean} false if any element fails the test.
+ * @template T,K,V
+ */
+goog.object.every = function(obj, f, opt_obj) {
+ for (var key in obj) {
+ if (!f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * Returns the number of key-value pairs in the object map.
+ *
+ * @param {Object} obj The object for which to get the number of key-value
+ * pairs.
+ * @return {number} The number of key-value pairs in the object map.
+ */
+goog.object.getCount = function(obj) {
+ var rv = 0;
+ for (var key in obj) {
+ rv++;
+ }
+ return rv;
+};
+
+
+/**
+ * Returns one key from the object map, if any exists.
+ * For map literals the returned key will be the first one in most of the
+ * browsers (a know exception is Konqueror).
+ *
+ * @param {Object} obj The object to pick a key from.
+ * @return {string|undefined} The key or undefined if the object is empty.
+ */
+goog.object.getAnyKey = function(obj) {
+ for (var key in obj) {
+ return key;
+ }
+};
+
+
+/**
+ * Returns one value from the object map, if any exists.
+ * For map literals the returned value will be the first one in most of the
+ * browsers (a know exception is Konqueror).
+ *
+ * @param {Object<K,V>} obj The object to pick a value from.
+ * @return {V|undefined} The value or undefined if the object is empty.
+ * @template K,V
+ */
+goog.object.getAnyValue = function(obj) {
+ for (var key in obj) {
+ return obj[key];
+ }
+};
+
+
+/**
+ * Whether the object/hash/map contains the given object as a value.
+ * An alias for goog.object.containsValue(obj, val).
+ *
+ * @param {Object<K,V>} obj The object in which to look for val.
+ * @param {V} val The object for which to check.
+ * @return {boolean} true if val is present.
+ * @template K,V
+ */
+goog.object.contains = function(obj, val) {
+ return goog.object.containsValue(obj, val);
+};
+
+
+/**
+ * Returns the values of the object/map/hash.
+ *
+ * @param {Object<K,V>} obj The object from which to get the values.
+ * @return {!Array<V>} The values in the object/map/hash.
+ * @template K,V
+ */
+goog.object.getValues = function(obj) {
+ var res = [];
+ var i = 0;
+ for (var key in obj) {
+ res[i++] = obj[key];
+ }
+ return res;
+};
+
+
+/**
+ * Returns the keys of the object/map/hash.
+ *
+ * @param {Object} obj The object from which to get the keys.
+ * @return {!Array<string>} Array of property keys.
+ */
+goog.object.getKeys = function(obj) {
+ var res = [];
+ var i = 0;
+ for (var key in obj) {
+ res[i++] = key;
+ }
+ return res;
+};
+
+
+/**
+ * Get a value from an object multiple levels deep. This is useful for
+ * pulling values from deeply nested objects, such as JSON responses.
+ * Example usage: getValueByKeys(jsonObj, 'foo', 'entries', 3)
+ *
+ * @param {!Object} obj An object to get the value from. Can be array-like.
+ * @param {...(string|number|!IArrayLike<number|string>)}
+ * var_args A number of keys
+ * (as strings, or numbers, for array-like objects). Can also be
+ * specified as a single array of keys.
+ * @return {*} The resulting value. If, at any point, the value for a key
+ * is undefined, returns undefined.
+ */
+goog.object.getValueByKeys = function(obj, var_args) {
+ var isArrayLike = goog.isArrayLike(var_args);
+ var keys = isArrayLike ? var_args : arguments;
+
+ // Start with the 2nd parameter for the variable parameters syntax.
+ for (var i = isArrayLike ? 0 : 1; i < keys.length; i++) {
+ obj = obj[keys[i]];
+ if (!goog.isDef(obj)) {
+ break;
+ }
+ }
+
+ return obj;
+};
+
+
+/**
+ * Whether the object/map/hash contains the given key.
+ *
+ * @param {Object} obj The object in which to look for key.
+ * @param {?} key The key for which to check.
+ * @return {boolean} true If the map contains the key.
+ */
+goog.object.containsKey = function(obj, key) {
+ return obj !== null && key in obj;
+};
+
+
+/**
+ * Whether the object/map/hash contains the given value. This is O(n).
+ *
+ * @param {Object<K,V>} obj The object in which to look for val.
+ * @param {V} val The value for which to check.
+ * @return {boolean} true If the map contains the value.
+ * @template K,V
+ */
+goog.object.containsValue = function(obj, val) {
+ for (var key in obj) {
+ if (obj[key] == val) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Searches an object for an element that satisfies the given condition and
+ * returns its key.
+ * @param {Object<K,V>} obj The object to search in.
+ * @param {function(this:T,V,string,Object<K,V>):boolean} f The
+ * function to call for every element. Takes 3 arguments (the value,
+ * the key and the object) and should return a boolean.
+ * @param {T=} opt_this An optional "this" context for the function.
+ * @return {string|undefined} The key of an element for which the function
+ * returns true or undefined if no such element is found.
+ * @template T,K,V
+ */
+goog.object.findKey = function(obj, f, opt_this) {
+ for (var key in obj) {
+ if (f.call(/** @type {?} */ (opt_this), obj[key], key, obj)) {
+ return key;
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * Searches an object for an element that satisfies the given condition and
+ * returns its value.
+ * @param {Object<K,V>} obj The object to search in.
+ * @param {function(this:T,V,string,Object<K,V>):boolean} f The function
+ * to call for every element. Takes 3 arguments (the value, the key
+ * and the object) and should return a boolean.
+ * @param {T=} opt_this An optional "this" context for the function.
+ * @return {V} The value of an element for which the function returns true or
+ * undefined if no such element is found.
+ * @template T,K,V
+ */
+goog.object.findValue = function(obj, f, opt_this) {
+ var key = goog.object.findKey(obj, f, opt_this);
+ return key && obj[key];
+};
+
+
+/**
+ * Whether the object/map/hash is empty.
+ *
+ * @param {Object} obj The object to test.
+ * @return {boolean} true if obj is empty.
+ */
+goog.object.isEmpty = function(obj) {
+ for (var key in obj) {
+ return false;
+ }
+ return true;
+};
+
+
+/**
+ * Removes all key value pairs from the object/map/hash.
+ *
+ * @param {Object} obj The object to clear.
+ */
+goog.object.clear = function(obj) {
+ for (var i in obj) {
+ delete obj[i];
+ }
+};
+
+
+/**
+ * Removes a key-value pair based on the key.
+ *
+ * @param {Object} obj The object from which to remove the key.
+ * @param {?} key The key to remove.
+ * @return {boolean} Whether an element was removed.
+ */
+goog.object.remove = function(obj, key) {
+ var rv;
+ if (rv = key in /** @type {!Object} */ (obj)) {
+ delete obj[key];
+ }
+ return rv;
+};
+
+
+/**
+ * Adds a key-value pair to the object. Throws an exception if the key is
+ * already in use. Use set if you want to change an existing pair.
+ *
+ * @param {Object<K,V>} obj The object to which to add the key-value pair.
+ * @param {string} key The key to add.
+ * @param {V} val The value to add.
+ * @template K,V
+ */
+goog.object.add = function(obj, key, val) {
+ if (obj !== null && key in obj) {
+ throw Error('The object already contains the key "' + key + '"');
+ }
+ goog.object.set(obj, key, val);
+};
+
+
+/**
+ * Returns the value for the given key.
+ *
+ * @param {Object<K,V>} obj The object from which to get the value.
+ * @param {string} key The key for which to get the value.
+ * @param {R=} opt_val The value to return if no item is found for the given
+ * key (default is undefined).
+ * @return {V|R|undefined} The value for the given key.
+ * @template K,V,R
+ */
+goog.object.get = function(obj, key, opt_val) {
+ if (obj !== null && key in obj) {
+ return obj[key];
+ }
+ return opt_val;
+};
+
+
+/**
+ * Adds a key-value pair to the object/map/hash.
+ *
+ * @param {Object<K,V>} obj The object to which to add the key-value pair.
+ * @param {string} key The key to add.
+ * @param {V} value The value to add.
+ * @template K,V
+ */
+goog.object.set = function(obj, key, value) {
+ obj[key] = value;
+};
+
+
+/**
+ * Adds a key-value pair to the object/map/hash if it doesn't exist yet.
+ *
+ * @param {Object<K,V>} obj The object to which to add the key-value pair.
+ * @param {string} key The key to add.
+ * @param {V} value The value to add if the key wasn't present.
+ * @return {V} The value of the entry at the end of the function.
+ * @template K,V
+ */
+goog.object.setIfUndefined = function(obj, key, value) {
+ return key in /** @type {!Object} */ (obj) ? obj[key] : (obj[key] = value);
+};
+
+
+/**
+ * Sets a key and value to an object if the key is not set. The value will be
+ * the return value of the given function. If the key already exists, the
+ * object will not be changed and the function will not be called (the function
+ * will be lazily evaluated -- only called if necessary).
+ *
+ * This function is particularly useful for use with a map used a as a cache.
+ *
+ * @param {!Object<K,V>} obj The object to which to add the key-value pair.
+ * @param {string} key The key to add.
+ * @param {function():V} f The value to add if the key wasn't present.
+ * @return {V} The value of the entry at the end of the function.
+ * @template K,V
+ */
+goog.object.setWithReturnValueIfNotSet = function(obj, key, f) {
+ if (key in obj) {
+ return obj[key];
+ }
+
+ var val = f();
+ obj[key] = val;
+ return val;
+};
+
+
+/**
+ * Compares two objects for equality using === on the values.
+ *
+ * @param {!Object<K,V>} a
+ * @param {!Object<K,V>} b
+ * @return {boolean}
+ * @template K,V
+ */
+goog.object.equals = function(a, b) {
+ for (var k in a) {
+ if (!(k in b) || a[k] !== b[k]) {
+ return false;
+ }
+ }
+ for (var k in b) {
+ if (!(k in a)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * Returns a shallow clone of the object.
+ *
+ * @param {Object<K,V>} obj Object to clone.
+ * @return {!Object<K,V>} Clone of the input object.
+ * @template K,V
+ */
+goog.object.clone = function(obj) {
+ // We cannot use the prototype trick because a lot of methods depend on where
+ // the actual key is set.
+
+ var res = {};
+ for (var key in obj) {
+ res[key] = obj[key];
+ }
+ return res;
+ // We could also use goog.mixin but I wanted this to be independent from that.
+};
+
+
+/**
+ * Clones a value. The input may be an Object, Array, or basic type. Objects and
+ * arrays will be cloned recursively.
+ *
+ * WARNINGS:
+ * <code>goog.object.unsafeClone</code> does not detect reference loops. Objects
+ * that refer to themselves will cause infinite recursion.
+ *
+ * <code>goog.object.unsafeClone</code> is unaware of unique identifiers, and
+ * copies UIDs created by <code>getUid</code> into cloned results.
+ *
+ * @param {*} obj The value to clone.
+ * @return {*} A clone of the input value.
+ */
+goog.object.unsafeClone = function(obj) {
+ var type = goog.typeOf(obj);
+ if (type == 'object' || type == 'array') {
+ if (goog.isFunction(obj.clone)) {
+ return obj.clone();
+ }
+ var clone = type == 'array' ? [] : {};
+ for (var key in obj) {
+ clone[key] = goog.object.unsafeClone(obj[key]);
+ }
+ return clone;
+ }
+
+ return obj;
+};
+
+
+/**
+ * Returns a new object in which all the keys and values are interchanged
+ * (keys become values and values become keys). If multiple keys map to the
+ * same value, the chosen transposed value is implementation-dependent.
+ *
+ * @param {Object} obj The object to transpose.
+ * @return {!Object} The transposed object.
+ */
+goog.object.transpose = function(obj) {
+ var transposed = {};
+ for (var key in obj) {
+ transposed[obj[key]] = key;
+ }
+ return transposed;
+};
+
+
+/**
+ * The names of the fields that are defined on Object.prototype.
+ * @type {Array<string>}
+ * @private
+ */
+goog.object.PROTOTYPE_FIELDS_ = [
+ 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
+ 'toLocaleString', 'toString', 'valueOf'
+];
+
+
+/**
+ * Extends an object with another object.
+ * This operates 'in-place'; it does not create a new Object.
+ *
+ * Example:
+ * var o = {};
+ * goog.object.extend(o, {a: 0, b: 1});
+ * o; // {a: 0, b: 1}
+ * goog.object.extend(o, {b: 2, c: 3});
+ * o; // {a: 0, b: 2, c: 3}
+ *
+ * @param {Object} target The object to modify. Existing properties will be
+ * overwritten if they are also present in one of the objects in
+ * {@code var_args}.
+ * @param {...Object} var_args The objects from which values will be copied.
+ */
+goog.object.extend = function(target, var_args) {
+ var key, source;
+ for (var i = 1; i < arguments.length; i++) {
+ source = arguments[i];
+ for (key in source) {
+ target[key] = source[key];
+ }
+
+ // For IE the for-in-loop does not contain any properties that are not
+ // enumerable on the prototype object (for example isPrototypeOf from
+ // Object.prototype) and it will also not include 'replace' on objects that
+ // extend String and change 'replace' (not that it is common for anyone to
+ // extend anything except Object).
+
+ for (var j = 0; j < goog.object.PROTOTYPE_FIELDS_.length; j++) {
+ key = goog.object.PROTOTYPE_FIELDS_[j];
+ if (Object.prototype.hasOwnProperty.call(source, key)) {
+ target[key] = source[key];
+ }
+ }
+ }
+};
+
+
+/**
+ * Creates a new object built from the key-value pairs provided as arguments.
+ * @param {...*} var_args If only one argument is provided and it is an array
+ * then this is used as the arguments, otherwise even arguments are used as
+ * the property names and odd arguments are used as the property values.
+ * @return {!Object} The new object.
+ * @throws {Error} If there are uneven number of arguments or there is only one
+ * non array argument.
+ */
+goog.object.create = function(var_args) {
+ var argLength = arguments.length;
+ if (argLength == 1 && goog.isArray(arguments[0])) {
+ return goog.object.create.apply(null, arguments[0]);
+ }
+
+ if (argLength % 2) {
+ throw Error('Uneven number of arguments');
+ }
+
+ var rv = {};
+ for (var i = 0; i < argLength; i += 2) {
+ rv[arguments[i]] = arguments[i + 1];
+ }
+ return rv;
+};
+
+
+/**
+ * Creates a new object where the property names come from the arguments but
+ * the value is always set to true
+ * @param {...*} var_args If only one argument is provided and it is an array
+ * then this is used as the arguments, otherwise the arguments are used
+ * as the property names.
+ * @return {!Object} The new object.
+ */
+goog.object.createSet = function(var_args) {
+ var argLength = arguments.length;
+ if (argLength == 1 && goog.isArray(arguments[0])) {
+ return goog.object.createSet.apply(null, arguments[0]);
+ }
+
+ var rv = {};
+ for (var i = 0; i < argLength; i++) {
+ rv[arguments[i]] = true;
+ }
+ return rv;
+};
+
+
+/**
+ * Creates an immutable view of the underlying object, if the browser
+ * supports immutable objects.
+ *
+ * In default mode, writes to this view will fail silently. In strict mode,
+ * they will throw an error.
+ *
+ * @param {!Object<K,V>} obj An object.
+ * @return {!Object<K,V>} An immutable view of that object, or the
+ * original object if this browser does not support immutables.
+ * @template K,V
+ */
+goog.object.createImmutableView = function(obj) {
+ var result = obj;
+ if (Object.isFrozen && !Object.isFrozen(obj)) {
+ result = Object.create(obj);
+ Object.freeze(result);
+ }
+ return result;
+};
+
+
+/**
+ * @param {!Object} obj An object.
+ * @return {boolean} Whether this is an immutable view of the object.
+ */
+goog.object.isImmutableView = function(obj) {
+ return !!Object.isFrozen && Object.isFrozen(obj);
+};
+
+// Copyright 2013 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Closure user agent detection (Browser).
+ * @see <a href="http://www.useragentstring.com/">User agent strings</a>
+ * For more information on rendering engine, platform, or device see the other
+ * sub-namespaces in goog.labs.userAgent, goog.labs.userAgent.platform,
+ * goog.labs.userAgent.device respectively.)
+ *
+ * @author martone@google.com (Andy Martone)
+ */
+
+goog.provide('goog.labs.userAgent.browser');
+
+goog.require('goog.array');
+goog.require('goog.labs.userAgent.util');
+goog.require('goog.object');
+goog.require('goog.string');
+
+
+// TODO(nnaze): Refactor to remove excessive exclusion logic in matching
+// functions.
+
+
+/**
+ * @return {boolean} Whether the user's browser is Opera. Note: Chromium
+ * based Opera (Opera 15+) is detected as Chrome to avoid unnecessary
+ * special casing.
+ * @private
+ */
+goog.labs.userAgent.browser.matchOpera_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Opera');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is IE.
+ * @private
+ */
+goog.labs.userAgent.browser.matchIE_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Trident') ||
+ goog.labs.userAgent.util.matchUserAgent('MSIE');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Edge.
+ * @private
+ */
+goog.labs.userAgent.browser.matchEdge_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Edge');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Firefox.
+ * @private
+ */
+goog.labs.userAgent.browser.matchFirefox_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Firefox');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Safari.
+ * @private
+ */
+goog.labs.userAgent.browser.matchSafari_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Safari') &&
+ !(goog.labs.userAgent.browser.matchChrome_() ||
+ goog.labs.userAgent.browser.matchCoast_() ||
+ goog.labs.userAgent.browser.matchOpera_() ||
+ goog.labs.userAgent.browser.matchEdge_() ||
+ goog.labs.userAgent.browser.isSilk() ||
+ goog.labs.userAgent.util.matchUserAgent('Android'));
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based
+ * iOS browser).
+ * @private
+ */
+goog.labs.userAgent.browser.matchCoast_ = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Coast');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is iOS Webview.
+ * @private
+ */
+goog.labs.userAgent.browser.matchIosWebview_ = function() {
+ // iOS Webview does not show up as Chrome or Safari. Also check for Opera's
+ // WebKit-based iOS browser, Coast.
+ return (goog.labs.userAgent.util.matchUserAgent('iPad') ||
+ goog.labs.userAgent.util.matchUserAgent('iPhone')) &&
+ !goog.labs.userAgent.browser.matchSafari_() &&
+ !goog.labs.userAgent.browser.matchChrome_() &&
+ !goog.labs.userAgent.browser.matchCoast_() &&
+ goog.labs.userAgent.util.matchUserAgent('AppleWebKit');
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Chrome.
+ * @private
+ */
+goog.labs.userAgent.browser.matchChrome_ = function() {
+ return (goog.labs.userAgent.util.matchUserAgent('Chrome') ||
+ goog.labs.userAgent.util.matchUserAgent('CriOS')) &&
+ !goog.labs.userAgent.browser.matchEdge_();
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is the Android browser.
+ * @private
+ */
+goog.labs.userAgent.browser.matchAndroidBrowser_ = function() {
+ // Android can appear in the user agent string for Chrome on Android.
+ // This is not the Android standalone browser if it does.
+ return goog.labs.userAgent.util.matchUserAgent('Android') &&
+ !(goog.labs.userAgent.browser.isChrome() ||
+ goog.labs.userAgent.browser.isFirefox() ||
+ goog.labs.userAgent.browser.isOpera() ||
+ goog.labs.userAgent.browser.isSilk());
+};
+
+
+/**
+ * @return {boolean} Whether the user's browser is Opera.
+ */
+goog.labs.userAgent.browser.isOpera = goog.labs.userAgent.browser.matchOpera_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is IE.
+ */
+goog.labs.userAgent.browser.isIE = goog.labs.userAgent.browser.matchIE_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is Edge.
+ */
+goog.labs.userAgent.browser.isEdge = goog.labs.userAgent.browser.matchEdge_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is Firefox.
+ */
+goog.labs.userAgent.browser.isFirefox =
+ goog.labs.userAgent.browser.matchFirefox_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is Safari.
+ */
+goog.labs.userAgent.browser.isSafari = goog.labs.userAgent.browser.matchSafari_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based
+ * iOS browser).
+ */
+goog.labs.userAgent.browser.isCoast = goog.labs.userAgent.browser.matchCoast_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is iOS Webview.
+ */
+goog.labs.userAgent.browser.isIosWebview =
+ goog.labs.userAgent.browser.matchIosWebview_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is Chrome.
+ */
+goog.labs.userAgent.browser.isChrome = goog.labs.userAgent.browser.matchChrome_;
+
+
+/**
+ * @return {boolean} Whether the user's browser is the Android browser.
+ */
+goog.labs.userAgent.browser.isAndroidBrowser =
+ goog.labs.userAgent.browser.matchAndroidBrowser_;
+
+
+/**
+ * For more information, see:
+ * http://docs.aws.amazon.com/silk/latest/developerguide/user-agent.html
+ * @return {boolean} Whether the user's browser is Silk.
+ */
+goog.labs.userAgent.browser.isSilk = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Silk');
+};
+
+
+/**
+ * @return {string} The browser version or empty string if version cannot be
+ * determined. Note that for Internet Explorer, this returns the version of
+ * the browser, not the version of the rendering engine. (IE 8 in
+ * compatibility mode will return 8.0 rather than 7.0. To determine the
+ * rendering engine version, look at document.documentMode instead. See
+ * http://msdn.microsoft.com/en-us/library/cc196988(v=vs.85).aspx for more
+ * details.)
+ */
+goog.labs.userAgent.browser.getVersion = function() {
+ var userAgentString = goog.labs.userAgent.util.getUserAgent();
+ // Special case IE since IE's version is inside the parenthesis and
+ // without the '/'.
+ if (goog.labs.userAgent.browser.isIE()) {
+ return goog.labs.userAgent.browser.getIEVersion_(userAgentString);
+ }
+
+ var versionTuples =
+ goog.labs.userAgent.util.extractVersionTuples(userAgentString);
+
+ // Construct a map for easy lookup.
+ var versionMap = {};
+ goog.array.forEach(versionTuples, function(tuple) {
+ // Note that the tuple is of length three, but we only care about the
+ // first two.
+ var key = tuple[0];
+ var value = tuple[1];
+ versionMap[key] = value;
+ });
+
+ var versionMapHasKey = goog.partial(goog.object.containsKey, versionMap);
+
+ // Gives the value with the first key it finds, otherwise empty string.
+ function lookUpValueWithKeys(keys) {
+ var key = goog.array.find(keys, versionMapHasKey);
+ return versionMap[key] || '';
+ }
+
+ // Check Opera before Chrome since Opera 15+ has "Chrome" in the string.
+ // See
+ // http://my.opera.com/ODIN/blog/2013/07/15/opera-user-agent-strings-opera-15-and-beyond
+ if (goog.labs.userAgent.browser.isOpera()) {
+ // Opera 10 has Version/10.0 but Opera/9.8, so look for "Version" first.
+ // Opera uses 'OPR' for more recent UAs.
+ return lookUpValueWithKeys(['Version', 'Opera']);
+ }
+
+ // Check Edge before Chrome since it has Chrome in the string.
+ if (goog.labs.userAgent.browser.isEdge()) {
+ return lookUpValueWithKeys(['Edge']);
+ }
+
+ if (goog.labs.userAgent.browser.isChrome()) {
+ return lookUpValueWithKeys(['Chrome', 'CriOS']);
+ }
+
+ // Usually products browser versions are in the third tuple after "Mozilla"
+ // and the engine.
+ var tuple = versionTuples[2];
+ return tuple && tuple[1] || '';
+};
+
+
+/**
+ * @param {string|number} version The version to check.
+ * @return {boolean} Whether the browser version is higher or the same as the
+ * given version.
+ */
+goog.labs.userAgent.browser.isVersionOrHigher = function(version) {
+ return goog.string.compareVersions(
+ goog.labs.userAgent.browser.getVersion(), version) >= 0;
+};
+
+
+/**
+ * Determines IE version. More information:
+ * http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.85).aspx#uaString
+ * http://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx
+ * http://blogs.msdn.com/b/ie/archive/2010/03/23/introducing-ie9-s-user-agent-string.aspx
+ * http://blogs.msdn.com/b/ie/archive/2009/01/09/the-internet-explorer-8-user-agent-string-updated-edition.aspx
+ *
+ * @param {string} userAgent the User-Agent.
+ * @return {string}
+ * @private
+ */
+goog.labs.userAgent.browser.getIEVersion_ = function(userAgent) {
+ // IE11 may identify itself as MSIE 9.0 or MSIE 10.0 due to an IE 11 upgrade
+ // bug. Example UA:
+ // Mozilla/5.0 (MSIE 9.0; Windows NT 6.1; WOW64; Trident/7.0; rv:11.0)
+ // like Gecko.
+ // See http://www.whatismybrowser.com/developers/unknown-user-agent-fragments.
+ var rv = /rv: *([\d\.]*)/.exec(userAgent);
+ if (rv && rv[1]) {
+ return rv[1];
+ }
+
+ var version = '';
+ var msie = /MSIE +([\d\.]+)/.exec(userAgent);
+ if (msie && msie[1]) {
+ // IE in compatibility mode usually identifies itself as MSIE 7.0; in this
+ // case, use the Trident version to determine the version of IE. For more
+ // details, see the links above.
+ var tridentVersion = /Trident\/(\d.\d)/.exec(userAgent);
+ if (msie[1] == '7.0') {
+ if (tridentVersion && tridentVersion[1]) {
+ switch (tridentVersion[1]) {
+ case '4.0':
+ version = '8.0';
+ break;
+ case '5.0':
+ version = '9.0';
+ break;
+ case '6.0':
+ version = '10.0';
+ break;
+ case '7.0':
+ version = '11.0';
+ break;
+ }
+ } else {
+ version = '7.0';
+ }
+ } else {
+ version = msie[1];
+ }
+ }
+ return version;
+};
+
+// Copyright 2013 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Closure user agent detection.
+ * @see http://en.wikipedia.org/wiki/User_agent
+ * For more information on browser brand, platform, or device see the other
+ * sub-namespaces in goog.labs.userAgent (browser, platform, and device).
+ *
+ */
+
+goog.provide('goog.labs.userAgent.engine');
+
+goog.require('goog.array');
+goog.require('goog.labs.userAgent.util');
+goog.require('goog.string');
+
+
+/**
+ * @return {boolean} Whether the rendering engine is Presto.
+ */
+goog.labs.userAgent.engine.isPresto = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Presto');
+};
+
+
+/**
+ * @return {boolean} Whether the rendering engine is Trident.
+ */
+goog.labs.userAgent.engine.isTrident = function() {
+ // IE only started including the Trident token in IE8.
+ return goog.labs.userAgent.util.matchUserAgent('Trident') ||
+ goog.labs.userAgent.util.matchUserAgent('MSIE');
+};
+
+
+/**
+ * @return {boolean} Whether the rendering engine is Edge.
+ */
+goog.labs.userAgent.engine.isEdge = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Edge');
+};
+
+
+/**
+ * @return {boolean} Whether the rendering engine is WebKit.
+ */
+goog.labs.userAgent.engine.isWebKit = function() {
+ return goog.labs.userAgent.util.matchUserAgentIgnoreCase('WebKit') &&
+ !goog.labs.userAgent.engine.isEdge();
+};
+
+
+/**
+ * @return {boolean} Whether the rendering engine is Gecko.
+ */
+goog.labs.userAgent.engine.isGecko = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Gecko') &&
+ !goog.labs.userAgent.engine.isWebKit() &&
+ !goog.labs.userAgent.engine.isTrident() &&
+ !goog.labs.userAgent.engine.isEdge();
+};
+
+
+/**
+ * @return {string} The rendering engine's version or empty string if version
+ * can't be determined.
+ */
+goog.labs.userAgent.engine.getVersion = function() {
+ var userAgentString = goog.labs.userAgent.util.getUserAgent();
+ if (userAgentString) {
+ var tuples = goog.labs.userAgent.util.extractVersionTuples(userAgentString);
+
+ var engineTuple = goog.labs.userAgent.engine.getEngineTuple_(tuples);
+ if (engineTuple) {
+ // In Gecko, the version string is either in the browser info or the
+ // Firefox version. See Gecko user agent string reference:
+ // http://goo.gl/mULqa
+ if (engineTuple[0] == 'Gecko') {
+ return goog.labs.userAgent.engine.getVersionForKey_(tuples, 'Firefox');
+ }
+
+ return engineTuple[1];
+ }
+
+ // MSIE has only one version identifier, and the Trident version is
+ // specified in the parenthetical. IE Edge is covered in the engine tuple
+ // detection.
+ var browserTuple = tuples[0];
+ var info;
+ if (browserTuple && (info = browserTuple[2])) {
+ var match = /Trident\/([^\s;]+)/.exec(info);
+ if (match) {
+ return match[1];
+ }
+ }
+ }
+ return '';
+};
+
+
+/**
+ * @param {!Array<!Array<string>>} tuples Extracted version tuples.
+ * @return {!Array<string>|undefined} The engine tuple or undefined if not
+ * found.
+ * @private
+ */
+goog.labs.userAgent.engine.getEngineTuple_ = function(tuples) {
+ if (!goog.labs.userAgent.engine.isEdge()) {
+ return tuples[1];
+ }
+ for (var i = 0; i < tuples.length; i++) {
+ var tuple = tuples[i];
+ if (tuple[0] == 'Edge') {
+ return tuple;
+ }
+ }
+};
+
+
+/**
+ * @param {string|number} version The version to check.
+ * @return {boolean} Whether the rendering engine version is higher or the same
+ * as the given version.
+ */
+goog.labs.userAgent.engine.isVersionOrHigher = function(version) {
+ return goog.string.compareVersions(
+ goog.labs.userAgent.engine.getVersion(), version) >= 0;
+};
+
+
+/**
+ * @param {!Array<!Array<string>>} tuples Version tuples.
+ * @param {string} key The key to look for.
+ * @return {string} The version string of the given key, if present.
+ * Otherwise, the empty string.
+ * @private
+ */
+goog.labs.userAgent.engine.getVersionForKey_ = function(tuples, key) {
+ // TODO(nnaze): Move to util if useful elsewhere.
+
+ var pair = goog.array.find(tuples, function(pair) { return key == pair[0]; });
+
+ return pair && pair[1] || '';
+};
+
+// Copyright 2013 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Closure user agent platform detection.
+ * @see <a href="http://www.useragentstring.com/">User agent strings</a>
+ * For more information on browser brand, rendering engine, or device see the
+ * other sub-namespaces in goog.labs.userAgent (browser, engine, and device
+ * respectively).
+ *
+ */
+
+goog.provide('goog.labs.userAgent.platform');
+
+goog.require('goog.labs.userAgent.util');
+goog.require('goog.string');
+
+
+/**
+ * @return {boolean} Whether the platform is Android.
+ */
+goog.labs.userAgent.platform.isAndroid = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Android');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is iPod.
+ */
+goog.labs.userAgent.platform.isIpod = function() {
+ return goog.labs.userAgent.util.matchUserAgent('iPod');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is iPhone.
+ */
+goog.labs.userAgent.platform.isIphone = function() {
+ return goog.labs.userAgent.util.matchUserAgent('iPhone') &&
+ !goog.labs.userAgent.util.matchUserAgent('iPod') &&
+ !goog.labs.userAgent.util.matchUserAgent('iPad');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is iPad.
+ */
+goog.labs.userAgent.platform.isIpad = function() {
+ return goog.labs.userAgent.util.matchUserAgent('iPad');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is iOS.
+ */
+goog.labs.userAgent.platform.isIos = function() {
+ return goog.labs.userAgent.platform.isIphone() ||
+ goog.labs.userAgent.platform.isIpad() ||
+ goog.labs.userAgent.platform.isIpod();
+};
+
+
+/**
+ * @return {boolean} Whether the platform is Mac.
+ */
+goog.labs.userAgent.platform.isMacintosh = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Macintosh');
+};
+
+
+/**
+ * Note: ChromeOS is not considered to be Linux as it does not report itself
+ * as Linux in the user agent string.
+ * @return {boolean} Whether the platform is Linux.
+ */
+goog.labs.userAgent.platform.isLinux = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Linux');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is Windows.
+ */
+goog.labs.userAgent.platform.isWindows = function() {
+ return goog.labs.userAgent.util.matchUserAgent('Windows');
+};
+
+
+/**
+ * @return {boolean} Whether the platform is ChromeOS.
+ */
+goog.labs.userAgent.platform.isChromeOS = function() {
+ return goog.labs.userAgent.util.matchUserAgent('CrOS');
+};
+
+
+/**
+ * The version of the platform. We only determine the version for Windows,
+ * Mac, and Chrome OS. It doesn't make much sense on Linux. For Windows, we only
+ * look at the NT version. Non-NT-based versions (e.g. 95, 98, etc.) are given
+ * version 0.0.
+ *
+ * @return {string} The platform version or empty string if version cannot be
+ * determined.
+ */
+goog.labs.userAgent.platform.getVersion = function() {
+ var userAgentString = goog.labs.userAgent.util.getUserAgent();
+ var version = '', re;
+ if (goog.labs.userAgent.platform.isWindows()) {
+ re = /Windows (?:NT|Phone) ([0-9.]+)/;
+ var match = re.exec(userAgentString);
+ if (match) {
+ version = match[1];
+ } else {
+ version = '0.0';
+ }
+ } else if (goog.labs.userAgent.platform.isIos()) {
+ re = /(?:iPhone|iPod|iPad|CPU)\s+OS\s+(\S+)/;
+ var match = re.exec(userAgentString);
+ // Report the version as x.y.z and not x_y_z
+ version = match && match[1].replace(/_/g, '.');
+ } else if (goog.labs.userAgent.platform.isMacintosh()) {
+ re = /Mac OS X ([0-9_.]+)/;
+ var match = re.exec(userAgentString);
+ // Note: some old versions of Camino do not report an OSX version.
+ // Default to 10.
+ version = match ? match[1].replace(/_/g, '.') : '10';
+ } else if (goog.labs.userAgent.platform.isAndroid()) {
+ re = /Android\s+([^\);]+)(\)|;)/;
+ var match = re.exec(userAgentString);
+ version = match && match[1];
+ } else if (goog.labs.userAgent.platform.isChromeOS()) {
+ re = /(?:CrOS\s+(?:i686|x86_64)\s+([0-9.]+))/;
+ var match = re.exec(userAgentString);
+ version = match && match[1];
+ }
+ return version || '';
+};
+
+
+/**
+ * @param {string|number} version The version to check.
+ * @return {boolean} Whether the browser version is higher or the same as the
+ * given version.
+ */
+goog.labs.userAgent.platform.isVersionOrHigher = function(version) {
+ return goog.string.compareVersions(
+ goog.labs.userAgent.platform.getVersion(), version) >= 0;
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Rendering engine detection.
+ * @see <a href="http://www.useragentstring.com/">User agent strings</a>
+ * For information on the browser brand (such as Safari versus Chrome), see
+ * goog.userAgent.product.
+ * @author arv@google.com (Erik Arvidsson)
+ * @see ../demos/useragent.html
+ */
+
+goog.provide('goog.userAgent');
+
+goog.require('goog.labs.userAgent.browser');
+goog.require('goog.labs.userAgent.engine');
+goog.require('goog.labs.userAgent.platform');
+goog.require('goog.labs.userAgent.util');
+goog.require('goog.string');
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is IE.
+ */
+goog.define('goog.userAgent.ASSUME_IE', false);
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is EDGE.
+ */
+goog.define('goog.userAgent.ASSUME_EDGE', false);
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is GECKO.
+ */
+goog.define('goog.userAgent.ASSUME_GECKO', false);
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is WEBKIT.
+ */
+goog.define('goog.userAgent.ASSUME_WEBKIT', false);
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is a
+ * mobile device running WebKit e.g. iPhone or Android.
+ */
+goog.define('goog.userAgent.ASSUME_MOBILE_WEBKIT', false);
+
+
+/**
+ * @define {boolean} Whether we know at compile-time that the browser is OPERA.
+ */
+goog.define('goog.userAgent.ASSUME_OPERA', false);
+
+
+/**
+ * @define {boolean} Whether the
+ * {@code goog.userAgent.isVersionOrHigher}
+ * function will return true for any version.
+ */
+goog.define('goog.userAgent.ASSUME_ANY_VERSION', false);
+
+
+/**
+ * Whether we know the browser engine at compile-time.
+ * @type {boolean}
+ * @private
+ */
+goog.userAgent.BROWSER_KNOWN_ = goog.userAgent.ASSUME_IE ||
+ goog.userAgent.ASSUME_EDGE || goog.userAgent.ASSUME_GECKO ||
+ goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.ASSUME_WEBKIT ||
+ goog.userAgent.ASSUME_OPERA;
+
+
+/**
+ * Returns the userAgent string for the current browser.
+ *
+ * @return {string} The userAgent string.
+ */
+goog.userAgent.getUserAgentString = function() {
+ return goog.labs.userAgent.util.getUserAgent();
+};
+
+
+/**
+ * TODO(nnaze): Change type to "Navigator" and update compilation targets.
+ * @return {Object} The native navigator object.
+ */
+goog.userAgent.getNavigator = function() {
+ // Need a local navigator reference instead of using the global one,
+ // to avoid the rare case where they reference different objects.
+ // (in a WorkerPool, for example).
+ return goog.global['navigator'] || null;
+};
+
+
+/**
+ * Whether the user agent is Opera.
+ * @type {boolean}
+ */
+goog.userAgent.OPERA = goog.userAgent.BROWSER_KNOWN_ ?
+ goog.userAgent.ASSUME_OPERA :
+ goog.labs.userAgent.browser.isOpera();
+
+
+/**
+ * Whether the user agent is Internet Explorer.
+ * @type {boolean}
+ */
+goog.userAgent.IE = goog.userAgent.BROWSER_KNOWN_ ?
+ goog.userAgent.ASSUME_IE :
+ goog.labs.userAgent.browser.isIE();
+
+
+/**
+ * Whether the user agent is Microsoft Edge.
+ * @type {boolean}
+ */
+goog.userAgent.EDGE = goog.userAgent.BROWSER_KNOWN_ ?
+ goog.userAgent.ASSUME_EDGE :
+ goog.labs.userAgent.engine.isEdge();
+
+
+/**
+ * Whether the user agent is MS Internet Explorer or MS Edge.
+ * @type {boolean}
+ */
+goog.userAgent.EDGE_OR_IE = goog.userAgent.EDGE || goog.userAgent.IE;
+
+
+/**
+ * Whether the user agent is Gecko. Gecko is the rendering engine used by
+ * Mozilla, Firefox, and others.
+ * @type {boolean}
+ */
+goog.userAgent.GECKO = goog.userAgent.BROWSER_KNOWN_ ?
+ goog.userAgent.ASSUME_GECKO :
+ goog.labs.userAgent.engine.isGecko();
+
+
+/**
+ * Whether the user agent is WebKit. WebKit is the rendering engine that
+ * Safari, Android and others use.
+ * @type {boolean}
+ */
+goog.userAgent.WEBKIT = goog.userAgent.BROWSER_KNOWN_ ?
+ goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_MOBILE_WEBKIT :
+ goog.labs.userAgent.engine.isWebKit();
+
+
+/**
+ * Whether the user agent is running on a mobile device.
+ *
+ * This is a separate function so that the logic can be tested.
+ *
+ * TODO(nnaze): Investigate swapping in goog.labs.userAgent.device.isMobile().
+ *
+ * @return {boolean} Whether the user agent is running on a mobile device.
+ * @private
+ */
+goog.userAgent.isMobile_ = function() {
+ return goog.userAgent.WEBKIT &&
+ goog.labs.userAgent.util.matchUserAgent('Mobile');
+};
+
+
+/**
+ * Whether the user agent is running on a mobile device.
+ *
+ * TODO(nnaze): Consider deprecating MOBILE when labs.userAgent
+ * is promoted as the gecko/webkit logic is likely inaccurate.
+ *
+ * @type {boolean}
+ */
+goog.userAgent.MOBILE =
+ goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.isMobile_();
+
+
+/**
+ * Used while transitioning code to use WEBKIT instead.
+ * @type {boolean}
+ * @deprecated Use {@link goog.userAgent.product.SAFARI} instead.
+ * TODO(nicksantos): Delete this from goog.userAgent.
+ */
+goog.userAgent.SAFARI = goog.userAgent.WEBKIT;
+
+
+/**
+ * @return {string} the platform (operating system) the user agent is running
+ * on. Default to empty string because navigator.platform may not be defined
+ * (on Rhino, for example).
+ * @private
+ */
+goog.userAgent.determinePlatform_ = function() {
+ var navigator = goog.userAgent.getNavigator();
+ return navigator && navigator.platform || '';
+};
+
+
+/**
+ * The platform (operating system) the user agent is running on. Default to
+ * empty string because navigator.platform may not be defined (on Rhino, for
+ * example).
+ * @type {string}
+ */
+goog.userAgent.PLATFORM = goog.userAgent.determinePlatform_();
+
+
+/**
+ * @define {boolean} Whether the user agent is running on a Macintosh operating
+ * system.
+ */
+goog.define('goog.userAgent.ASSUME_MAC', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on a Windows operating
+ * system.
+ */
+goog.define('goog.userAgent.ASSUME_WINDOWS', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on a Linux operating
+ * system.
+ */
+goog.define('goog.userAgent.ASSUME_LINUX', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on a X11 windowing
+ * system.
+ */
+goog.define('goog.userAgent.ASSUME_X11', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on Android.
+ */
+goog.define('goog.userAgent.ASSUME_ANDROID', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on an iPhone.
+ */
+goog.define('goog.userAgent.ASSUME_IPHONE', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on an iPad.
+ */
+goog.define('goog.userAgent.ASSUME_IPAD', false);
+
+
+/**
+ * @define {boolean} Whether the user agent is running on an iPod.
+ */
+goog.define('goog.userAgent.ASSUME_IPOD', false);
+
+
+/**
+ * @type {boolean}
+ * @private
+ */
+goog.userAgent.PLATFORM_KNOWN_ = goog.userAgent.ASSUME_MAC ||
+ goog.userAgent.ASSUME_WINDOWS || goog.userAgent.ASSUME_LINUX ||
+ goog.userAgent.ASSUME_X11 || goog.userAgent.ASSUME_ANDROID ||
+ goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD ||
+ goog.userAgent.ASSUME_IPOD;
+
+
+/**
+ * Whether the user agent is running on a Macintosh operating system.
+ * @type {boolean}
+ */
+goog.userAgent.MAC = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_MAC :
+ goog.labs.userAgent.platform.isMacintosh();
+
+
+/**
+ * Whether the user agent is running on a Windows operating system.
+ * @type {boolean}
+ */
+goog.userAgent.WINDOWS = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_WINDOWS :
+ goog.labs.userAgent.platform.isWindows();
+
+
+/**
+ * Whether the user agent is Linux per the legacy behavior of
+ * goog.userAgent.LINUX, which considered ChromeOS to also be
+ * Linux.
+ * @return {boolean}
+ * @private
+ */
+goog.userAgent.isLegacyLinux_ = function() {
+ return goog.labs.userAgent.platform.isLinux() ||
+ goog.labs.userAgent.platform.isChromeOS();
+};
+
+
+/**
+ * Whether the user agent is running on a Linux operating system.
+ *
+ * Note that goog.userAgent.LINUX considers ChromeOS to be Linux,
+ * while goog.labs.userAgent.platform considers ChromeOS and
+ * Linux to be different OSes.
+ *
+ * @type {boolean}
+ */
+goog.userAgent.LINUX = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_LINUX :
+ goog.userAgent.isLegacyLinux_();
+
+
+/**
+ * @return {boolean} Whether the user agent is an X11 windowing system.
+ * @private
+ */
+goog.userAgent.isX11_ = function() {
+ var navigator = goog.userAgent.getNavigator();
+ return !!navigator &&
+ goog.string.contains(navigator['appVersion'] || '', 'X11');
+};
+
+
+/**
+ * Whether the user agent is running on a X11 windowing system.
+ * @type {boolean}
+ */
+goog.userAgent.X11 = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_X11 :
+ goog.userAgent.isX11_();
+
+
+/**
+ * Whether the user agent is running on Android.
+ * @type {boolean}
+ */
+goog.userAgent.ANDROID = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_ANDROID :
+ goog.labs.userAgent.platform.isAndroid();
+
+
+/**
+ * Whether the user agent is running on an iPhone.
+ * @type {boolean}
+ */
+goog.userAgent.IPHONE = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_IPHONE :
+ goog.labs.userAgent.platform.isIphone();
+
+
+/**
+ * Whether the user agent is running on an iPad.
+ * @type {boolean}
+ */
+goog.userAgent.IPAD = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_IPAD :
+ goog.labs.userAgent.platform.isIpad();
+
+
+/**
+ * Whether the user agent is running on an iPod.
+ * @type {boolean}
+ */
+goog.userAgent.IPOD = goog.userAgent.PLATFORM_KNOWN_ ?
+ goog.userAgent.ASSUME_IPOD :
+ goog.labs.userAgent.platform.isIpod();
+
+
+/**
+ * @return {string} The string that describes the version number of the user
+ * agent.
+ * @private
+ */
+goog.userAgent.determineVersion_ = function() {
+ // All browsers have different ways to detect the version and they all have
+ // different naming schemes.
+ // version is a string rather than a number because it may contain 'b', 'a',
+ // and so on.
+ var version = '';
+ var arr = goog.userAgent.getVersionRegexResult_();
+ if (arr) {
+ version = arr ? arr[1] : '';
+ }
+
+ if (goog.userAgent.IE) {
+ // IE9 can be in document mode 9 but be reporting an inconsistent user agent
+ // version. If it is identifying as a version lower than 9 we take the
+ // documentMode as the version instead. IE8 has similar behavior.
+ // It is recommended to set the X-UA-Compatible header to ensure that IE9
+ // uses documentMode 9.
+ var docMode = goog.userAgent.getDocumentMode_();
+ if (docMode != null && docMode > parseFloat(version)) {
+ return String(docMode);
+ }
+ }
+
+ return version;
+};
+
+
+/**
+ * @return {?Array|undefined} The version regex matches from parsing the user
+ * agent string. These regex statements must be executed inline so they can
+ * be compiled out by the closure compiler with the rest of the useragent
+ * detection logic when ASSUME_* is specified.
+ * @private
+ */
+goog.userAgent.getVersionRegexResult_ = function() {
+ var userAgent = goog.userAgent.getUserAgentString();
+ if (goog.userAgent.GECKO) {
+ return /rv\:([^\);]+)(\)|;)/.exec(userAgent);
+ }
+ if (goog.userAgent.EDGE) {
+ return /Edge\/([\d\.]+)/.exec(userAgent);
+ }
+ if (goog.userAgent.IE) {
+ return /\b(?:MSIE|rv)[: ]([^\);]+)(\)|;)/.exec(userAgent);
+ }
+ if (goog.userAgent.WEBKIT) {
+ // WebKit/125.4
+ return /WebKit\/(\S+)/.exec(userAgent);
+ }
+ if (goog.userAgent.OPERA) {
+ // If none of the above browsers were detected but the browser is Opera, the
+ // only string that is of interest is 'Version/<number>'.
+ return /(?:Version)[ \/]?(\S+)/.exec(userAgent);
+ }
+ return undefined;
+};
+
+
+/**
+ * @return {number|undefined} Returns the document mode (for testing).
+ * @private
+ */
+goog.userAgent.getDocumentMode_ = function() {
+ // NOTE(user): goog.userAgent may be used in context where there is no DOM.
+ var doc = goog.global['document'];
+ return doc ? doc['documentMode'] : undefined;
+};
+
+
+/**
+ * The version of the user agent. This is a string because it might contain
+ * 'b' (as in beta) as well as multiple dots.
+ * @type {string}
+ */
+goog.userAgent.VERSION = goog.userAgent.determineVersion_();
+
+
+/**
+ * Compares two version numbers.
+ *
+ * @param {string} v1 Version of first item.
+ * @param {string} v2 Version of second item.
+ *
+ * @return {number} 1 if first argument is higher
+ * 0 if arguments are equal
+ * -1 if second argument is higher.
+ * @deprecated Use goog.string.compareVersions.
+ */
+goog.userAgent.compare = function(v1, v2) {
+ return goog.string.compareVersions(v1, v2);
+};
+
+
+/**
+ * Cache for {@link goog.userAgent.isVersionOrHigher}.
+ * Calls to compareVersions are surprisingly expensive and, as a browser's
+ * version number is unlikely to change during a session, we cache the results.
+ * @const
+ * @private
+ */
+goog.userAgent.isVersionOrHigherCache_ = {};
+
+
+/**
+ * Whether the user agent version is higher or the same as the given version.
+ * NOTE: When checking the version numbers for Firefox and Safari, be sure to
+ * use the engine's version, not the browser's version number. For example,
+ * Firefox 3.0 corresponds to Gecko 1.9 and Safari 3.0 to Webkit 522.11.
+ * Opera and Internet Explorer versions match the product release number.<br>
+ * @see <a href="http://en.wikipedia.org/wiki/Safari_version_history">
+ * Webkit</a>
+ * @see <a href="http://en.wikipedia.org/wiki/Gecko_engine">Gecko</a>
+ *
+ * @param {string|number} version The version to check.
+ * @return {boolean} Whether the user agent version is higher or the same as
+ * the given version.
+ */
+goog.userAgent.isVersionOrHigher = function(version) {
+ return goog.userAgent.ASSUME_ANY_VERSION ||
+ goog.userAgent.isVersionOrHigherCache_[version] ||
+ (goog.userAgent.isVersionOrHigherCache_[version] =
+ goog.string.compareVersions(goog.userAgent.VERSION, version) >= 0);
+};
+
+
+/**
+ * Deprecated alias to {@code goog.userAgent.isVersionOrHigher}.
+ * @param {string|number} version The version to check.
+ * @return {boolean} Whether the user agent version is higher or the same as
+ * the given version.
+ * @deprecated Use goog.userAgent.isVersionOrHigher().
+ */
+goog.userAgent.isVersion = goog.userAgent.isVersionOrHigher;
+
+
+/**
+ * Whether the IE effective document mode is higher or the same as the given
+ * document mode version.
+ * NOTE: Only for IE, return false for another browser.
+ *
+ * @param {number} documentMode The document mode version to check.
+ * @return {boolean} Whether the IE effective document mode is higher or the
+ * same as the given version.
+ */
+goog.userAgent.isDocumentModeOrHigher = function(documentMode) {
+ return Number(goog.userAgent.DOCUMENT_MODE) >= documentMode;
+};
+
+
+/**
+ * Deprecated alias to {@code goog.userAgent.isDocumentModeOrHigher}.
+ * @param {number} version The version to check.
+ * @return {boolean} Whether the IE effective document mode is higher or the
+ * same as the given version.
+ * @deprecated Use goog.userAgent.isDocumentModeOrHigher().
+ */
+goog.userAgent.isDocumentMode = goog.userAgent.isDocumentModeOrHigher;
+
+
+/**
+ * For IE version < 7, documentMode is undefined, so attempt to use the
+ * CSS1Compat property to see if we are in standards mode. If we are in
+ * standards mode, treat the browser version as the document mode. Otherwise,
+ * IE is emulating version 5.
+ * @type {number|undefined}
+ * @const
+ */
+goog.userAgent.DOCUMENT_MODE = (function() {
+ var doc = goog.global['document'];
+ var mode = goog.userAgent.getDocumentMode_();
+ if (!doc || !goog.userAgent.IE) {
+ return undefined;
+ }
+ return mode || (doc['compatMode'] == 'CSS1Compat' ?
+ parseInt(goog.userAgent.VERSION, 10) :
+ 5);
+})();
+
+goog.provide('ol.dom');
+
+goog.require('goog.asserts');
+goog.require('goog.userAgent');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+
+
+/**
+ * Create an html canvas element and returns its 2d context.
+ * @param {number=} opt_width Canvas width.
+ * @param {number=} opt_height Canvas height.
+ * @return {CanvasRenderingContext2D} The context.
+ */
+ol.dom.createCanvasContext2D = function(opt_width, opt_height) {
+ var canvas = document.createElement('CANVAS');
+ if (opt_width) {
+ canvas.width = opt_width;
+ }
+ if (opt_height) {
+ canvas.height = opt_height;
+ }
+ return canvas.getContext('2d');
+};
+
+
+/**
+ * Detect 2d transform.
+ * Adapted from http://stackoverflow.com/q/5661671/130442
+ * http://caniuse.com/#feat=transforms2d
+ * @return {boolean}
+ */
+ol.dom.canUseCssTransform = (function() {
+ var canUseCssTransform;
+ return function() {
+ if (canUseCssTransform === undefined) {
+ goog.asserts.assert(document.body,
+ 'document.body should not be null');
+ goog.asserts.assert(ol.global.getComputedStyle,
+ 'getComputedStyle is required (unsupported browser?)');
+
+ var el = document.createElement('P'),
+ has2d,
+ transforms = {
+ 'webkitTransform': '-webkit-transform',
+ 'OTransform': '-o-transform',
+ 'msTransform': '-ms-transform',
+ 'MozTransform': '-moz-transform',
+ 'transform': 'transform'
+ };
+ document.body.appendChild(el);
+ for (var t in transforms) {
+ if (t in el.style) {
+ el.style[t] = 'translate(1px,1px)';
+ has2d = ol.global.getComputedStyle(el).getPropertyValue(
+ transforms[t]);
+ }
+ }
+ document.body.removeChild(el);
+
+ canUseCssTransform = (has2d && has2d !== 'none');
+ }
+ return canUseCssTransform;
+ };
+}());
+
+
+/**
+ * Detect 3d transform.
+ * Adapted from http://stackoverflow.com/q/5661671/130442
+ * http://caniuse.com/#feat=transforms3d
+ * @return {boolean}
+ */
+ol.dom.canUseCssTransform3D = (function() {
+ var canUseCssTransform3D;
+ return function() {
+ if (canUseCssTransform3D === undefined) {
+ goog.asserts.assert(document.body,
+ 'document.body should not be null');
+ goog.asserts.assert(ol.global.getComputedStyle,
+ 'getComputedStyle is required (unsupported browser?)');
+
+ var el = document.createElement('P'),
+ has3d,
+ transforms = {
+ 'webkitTransform': '-webkit-transform',
+ 'OTransform': '-o-transform',
+ 'msTransform': '-ms-transform',
+ 'MozTransform': '-moz-transform',
+ 'transform': 'transform'
+ };
+ document.body.appendChild(el);
+ for (var t in transforms) {
+ if (t in el.style) {
+ el.style[t] = 'translate3d(1px,1px,1px)';
+ has3d = ol.global.getComputedStyle(el).getPropertyValue(
+ transforms[t]);
+ }
+ }
+ document.body.removeChild(el);
+
+ canUseCssTransform3D = (has3d && has3d !== 'none');
+ }
+ return canUseCssTransform3D;
+ };
+}());
+
+
+/**
+ * @param {Element} element Element.
+ * @param {string} value Value.
+ */
+ol.dom.setTransform = function(element, value) {
+ var style = element.style;
+ style.WebkitTransform = value;
+ style.MozTransform = value;
+ style.OTransform = value;
+ style.msTransform = value;
+ style.transform = value;
+
+ // IE 9+ seems to assume transform-origin: 100% 100%; for some unknown reason
+ if (goog.userAgent.IE && goog.userAgent.isVersionOrHigher('9.0')) {
+ element.style.transformOrigin = '0 0';
+ }
+};
+
+
+/**
+ * @param {!Element} element Element.
+ * @param {goog.vec.Mat4.Number} transform Matrix.
+ * @param {number=} opt_precision Precision.
+ */
+ol.dom.transformElement2D = function(element, transform, opt_precision) {
+ // using matrix() causes gaps in Chrome and Firefox on Mac OS X, so prefer
+ // matrix3d()
+ var i;
+ if (ol.dom.canUseCssTransform3D()) {
+ var value3D;
+
+ if (opt_precision !== undefined) {
+ /** @type {Array.<string>} */
+ var strings3D = new Array(16);
+ for (i = 0; i < 16; ++i) {
+ strings3D[i] = transform[i].toFixed(opt_precision);
+ }
+ value3D = strings3D.join(',');
+ } else {
+ value3D = transform.join(',');
+ }
+ ol.dom.setTransform(element, 'matrix3d(' + value3D + ')');
+ } else if (ol.dom.canUseCssTransform()) {
+ /** @type {Array.<number>} */
+ var transform2D = [
+ goog.vec.Mat4.getElement(transform, 0, 0),
+ goog.vec.Mat4.getElement(transform, 1, 0),
+ goog.vec.Mat4.getElement(transform, 0, 1),
+ goog.vec.Mat4.getElement(transform, 1, 1),
+ goog.vec.Mat4.getElement(transform, 0, 3),
+ goog.vec.Mat4.getElement(transform, 1, 3)
+ ];
+ var value2D;
+ if (opt_precision !== undefined) {
+ /** @type {Array.<string>} */
+ var strings2D = new Array(6);
+ for (i = 0; i < 6; ++i) {
+ strings2D[i] = transform2D[i].toFixed(opt_precision);
+ }
+ value2D = strings2D.join(',');
+ } else {
+ value2D = transform2D.join(',');
+ }
+ ol.dom.setTransform(element, 'matrix(' + value2D + ')');
+ } else {
+ element.style.left =
+ Math.round(goog.vec.Mat4.getElement(transform, 0, 3)) + 'px';
+ element.style.top =
+ Math.round(goog.vec.Mat4.getElement(transform, 1, 3)) + 'px';
+
+ // TODO: Add scaling here. This isn't quite as simple as multiplying
+ // width/height, because that only changes the container size, not the
+ // content size.
+ }
+};
+
+
+/**
+ * Get the current computed width for the given element including margin,
+ * padding and border.
+ * Equivalent to jQuery's `$(el).outerWidth(true)`.
+ * @param {!Element} element Element.
+ * @return {number} The width.
+ */
+ol.dom.outerWidth = function(element) {
+ var width = element.offsetWidth;
+ var style = element.currentStyle || ol.global.getComputedStyle(element);
+ width += parseInt(style.marginLeft, 10) + parseInt(style.marginRight, 10);
+
+ return width;
+};
+
+
+/**
+ * Get the current computed height for the given element including margin,
+ * padding and border.
+ * Equivalent to jQuery's `$(el).outerHeight(true)`.
+ * @param {!Element} element Element.
+ * @return {number} The height.
+ */
+ol.dom.outerHeight = function(element) {
+ var height = element.offsetHeight;
+ var style = element.currentStyle || ol.global.getComputedStyle(element);
+ height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10);
+
+ return height;
+};
+
+/**
+ * @param {Node} newNode Node to replace old node
+ * @param {Node} oldNode The node to be replaced
+ */
+ol.dom.replaceNode = function(newNode, oldNode) {
+ var parent = oldNode.parentNode;
+ if (parent) {
+ parent.replaceChild(newNode, oldNode);
+ }
+};
+
+/**
+ * @param {Node} node The node to remove.
+ * @returns {Node} The node that was removed or null.
+ */
+ol.dom.removeNode = function(node) {
+ return node && node.parentNode ? node.parentNode.removeChild(node) : null;
+};
+
+/**
+ * @param {Node} node The node to remove the children from.
+ */
+ol.dom.removeChildren = function(node) {
+ while (node.lastChild) {
+ node.removeChild(node.lastChild);
+ }
+};
+
+goog.provide('ol.MapEvent');
+goog.provide('ol.MapEventType');
+
+goog.require('ol.events.Event');
+
+
+/**
+ * @enum {string}
+ */
+ol.MapEventType = {
+
+ /**
+ * Triggered after a map frame is rendered.
+ * @event ol.MapEvent#postrender
+ * @api
+ */
+ POSTRENDER: 'postrender',
+
+ /**
+ * Triggered after the map is moved.
+ * @event ol.MapEvent#moveend
+ * @api stable
+ */
+ MOVEEND: 'moveend'
+
+};
+
+
+/**
+ * @classdesc
+ * Events emitted as map events are instances of this type.
+ * See {@link ol.Map} for which events trigger a map event.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.MapEvent}
+ * @param {string} type Event type.
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState=} opt_frameState Frame state.
+ */
+ol.MapEvent = function(type, map, opt_frameState) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The map where the event occurred.
+ * @type {ol.Map}
+ * @api stable
+ */
+ this.map = map;
+
+ /**
+ * The frame state at the time of the event.
+ * @type {?olx.FrameState}
+ * @api
+ */
+ this.frameState = opt_frameState !== undefined ? opt_frameState : null;
+
+};
+ol.inherits(ol.MapEvent, ol.events.Event);
+
+goog.provide('ol.control.Control');
+
+goog.require('ol.events');
+goog.require('ol');
+goog.require('ol.MapEventType');
+goog.require('ol.Object');
+goog.require('ol.dom');
+
+
+/**
+ * @classdesc
+ * A control is a visible widget with a DOM element in a fixed position on the
+ * screen. They can involve user input (buttons), or be informational only;
+ * the position is determined using CSS. By default these are placed in the
+ * container with CSS class name `ol-overlaycontainer-stopevent`, but can use
+ * any outside DOM element.
+ *
+ * This is the base class for controls. You can use it for simple custom
+ * controls by creating the element with listeners, creating an instance:
+ * ```js
+ * var myControl = new ol.control.Control({element: myElement});
+ * ```
+ * and then adding this to the map.
+ *
+ * The main advantage of having this as a control rather than a simple separate
+ * DOM element is that preventing propagation is handled for you. Controls
+ * will also be `ol.Object`s in a `ol.Collection`, so you can use their
+ * methods.
+ *
+ * You can also extend this base for your own control class. See
+ * examples/custom-controls for an example of how to do this.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @implements {oli.control.Control}
+ * @param {olx.control.ControlOptions} options Control options.
+ * @api stable
+ */
+ol.control.Control = function(options) {
+
+ ol.Object.call(this);
+
+ /**
+ * @protected
+ * @type {Element}
+ */
+ this.element = options.element ? options.element : null;
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.target_ = null;
+
+ /**
+ * @private
+ * @type {ol.Map}
+ */
+ this.map_ = null;
+
+ /**
+ * @protected
+ * @type {!Array.<ol.EventsKey>}
+ */
+ this.listenerKeys = [];
+
+ /**
+ * @type {function(ol.MapEvent)}
+ */
+ this.render = options.render ? options.render : ol.nullFunction;
+
+ if (options.target) {
+ this.setTarget(options.target);
+ }
+
+};
+ol.inherits(ol.control.Control, ol.Object);
+
+
+/**
+ * @inheritDoc
+ */
+ol.control.Control.prototype.disposeInternal = function() {
+ ol.dom.removeNode(this.element);
+ ol.Object.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Get the map associated with this control.
+ * @return {ol.Map} Map.
+ * @api stable
+ */
+ol.control.Control.prototype.getMap = function() {
+ return this.map_;
+};
+
+
+/**
+ * Remove the control from its current map and attach it to the new map.
+ * Subclasses may set up event handlers to get notified about changes to
+ * the map here.
+ * @param {ol.Map} map Map.
+ * @api stable
+ */
+ol.control.Control.prototype.setMap = function(map) {
+ if (this.map_) {
+ ol.dom.removeNode(this.element);
+ }
+ for (var i = 0, ii = this.listenerKeys.length; i < ii; ++i) {
+ ol.events.unlistenByKey(this.listenerKeys[i]);
+ }
+ this.listenerKeys.length = 0;
+ this.map_ = map;
+ if (this.map_) {
+ var target = this.target_ ?
+ this.target_ : map.getOverlayContainerStopEvent();
+ target.appendChild(this.element);
+ if (this.render !== ol.nullFunction) {
+ this.listenerKeys.push(ol.events.listen(map,
+ ol.MapEventType.POSTRENDER, this.render, this));
+ }
+ map.render();
+ }
+};
+
+
+/**
+ * This function is used to set a target element for the control. It has no
+ * effect if it is called after the control has been added to the map (i.e.
+ * after `setMap` is called on the control). If no `target` is set in the
+ * options passed to the control constructor and if `setTarget` is not called
+ * then the control is added to the map's overlay container.
+ * @param {Element|string} target Target.
+ * @api
+ */
+ol.control.Control.prototype.setTarget = function(target) {
+ this.target_ = typeof target === 'string' ?
+ document.getElementById(target) :
+ target;
+};
+
+goog.provide('ol.css');
+
+
+/**
+ * The CSS class for hidden feature.
+ *
+ * @const
+ * @type {string}
+ */
+ol.css.CLASS_HIDDEN = 'ol-hidden';
+
+
+/**
+ * The CSS class that we'll give the DOM elements to have them unselectable.
+ *
+ * @const
+ * @type {string}
+ */
+ol.css.CLASS_UNSELECTABLE = 'ol-unselectable';
+
+
+/**
+ * The CSS class for unsupported feature.
+ *
+ * @const
+ * @type {string}
+ */
+ol.css.CLASS_UNSUPPORTED = 'ol-unsupported';
+
+
+/**
+ * The CSS class for controls.
+ *
+ * @const
+ * @type {string}
+ */
+ol.css.CLASS_CONTROL = 'ol-control';
+
+goog.provide('ol.structs.LRUCache');
+
+goog.require('goog.asserts');
+goog.require('ol.object');
+
+
+/**
+ * Implements a Least-Recently-Used cache where the keys do not conflict with
+ * Object's properties (e.g. 'hasOwnProperty' is not allowed as a key). Expiring
+ * items from the cache is the responsibility of the user.
+ * @constructor
+ * @struct
+ * @template T
+ */
+ol.structs.LRUCache = function() {
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.count_ = 0;
+
+ /**
+ * @private
+ * @type {!Object.<string, ol.LRUCacheEntry>}
+ */
+ this.entries_ = {};
+
+ /**
+ * @private
+ * @type {?ol.LRUCacheEntry}
+ */
+ this.oldest_ = null;
+
+ /**
+ * @private
+ * @type {?ol.LRUCacheEntry}
+ */
+ this.newest_ = null;
+
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.structs.LRUCache.prototype.assertValid = function() {
+ if (this.count_ === 0) {
+ goog.asserts.assert(ol.object.isEmpty(this.entries_),
+ 'entries must be an empty object (count = 0)');
+ goog.asserts.assert(!this.oldest_,
+ 'oldest must be null (count = 0)');
+ goog.asserts.assert(!this.newest_,
+ 'newest must be null (count = 0)');
+ } else {
+ goog.asserts.assert(Object.keys(this.entries_).length == this.count_,
+ 'number of entries matches count');
+ goog.asserts.assert(this.oldest_,
+ 'we have an oldest entry');
+ goog.asserts.assert(!this.oldest_.older,
+ 'no entry is older than oldest');
+ goog.asserts.assert(this.newest_,
+ 'we have a newest entry');
+ goog.asserts.assert(!this.newest_.newer,
+ 'no entry is newer than newest');
+ var i, entry;
+ var older = null;
+ i = 0;
+ for (entry = this.oldest_; entry; entry = entry.newer) {
+ goog.asserts.assert(entry.older === older,
+ 'entry.older links to correct older');
+ older = entry;
+ ++i;
+ }
+ goog.asserts.assert(i == this.count_, 'iterated correct amount of times');
+ var newer = null;
+ i = 0;
+ for (entry = this.newest_; entry; entry = entry.older) {
+ goog.asserts.assert(entry.newer === newer,
+ 'entry.newer links to correct newer');
+ newer = entry;
+ ++i;
+ }
+ goog.asserts.assert(i == this.count_, 'iterated correct amount of times');
+ }
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.structs.LRUCache.prototype.clear = function() {
+ this.count_ = 0;
+ this.entries_ = {};
+ this.oldest_ = null;
+ this.newest_ = null;
+};
+
+
+/**
+ * @param {string} key Key.
+ * @return {boolean} Contains key.
+ */
+ol.structs.LRUCache.prototype.containsKey = function(key) {
+ return this.entries_.hasOwnProperty(key);
+};
+
+
+/**
+ * @param {function(this: S, T, string, ol.structs.LRUCache): ?} f The function
+ * to call for every entry from the oldest to the newer. This function takes
+ * 3 arguments (the entry value, the entry key and the LRUCache object).
+ * The return value is ignored.
+ * @param {S=} opt_this The object to use as `this` in `f`.
+ * @template S
+ */
+ol.structs.LRUCache.prototype.forEach = function(f, opt_this) {
+ var entry = this.oldest_;
+ while (entry) {
+ f.call(opt_this, entry.value_, entry.key_, this);
+ entry = entry.newer;
+ }
+};
+
+
+/**
+ * @param {string} key Key.
+ * @return {T} Value.
+ */
+ol.structs.LRUCache.prototype.get = function(key) {
+ var entry = this.entries_[key];
+ goog.asserts.assert(entry !== undefined, 'an entry exists for key %s', key);
+ if (entry === this.newest_) {
+ return entry.value_;
+ } else if (entry === this.oldest_) {
+ this.oldest_ = /** @type {ol.LRUCacheEntry} */ (this.oldest_.newer);
+ this.oldest_.older = null;
+ } else {
+ entry.newer.older = entry.older;
+ entry.older.newer = entry.newer;
+ }
+ entry.newer = null;
+ entry.older = this.newest_;
+ this.newest_.newer = entry;
+ this.newest_ = entry;
+ return entry.value_;
+};
+
+
+/**
+ * @return {number} Count.
+ */
+ol.structs.LRUCache.prototype.getCount = function() {
+ return this.count_;
+};
+
+
+/**
+ * @return {Array.<string>} Keys.
+ */
+ol.structs.LRUCache.prototype.getKeys = function() {
+ var keys = new Array(this.count_);
+ var i = 0;
+ var entry;
+ for (entry = this.newest_; entry; entry = entry.older) {
+ keys[i++] = entry.key_;
+ }
+ goog.asserts.assert(i == this.count_, 'iterated correct number of times');
+ return keys;
+};
+
+
+/**
+ * @return {Array.<T>} Values.
+ */
+ol.structs.LRUCache.prototype.getValues = function() {
+ var values = new Array(this.count_);
+ var i = 0;
+ var entry;
+ for (entry = this.newest_; entry; entry = entry.older) {
+ values[i++] = entry.value_;
+ }
+ goog.asserts.assert(i == this.count_, 'iterated correct number of times');
+ return values;
+};
+
+
+/**
+ * @return {T} Last value.
+ */
+ol.structs.LRUCache.prototype.peekLast = function() {
+ goog.asserts.assert(this.oldest_, 'oldest must not be null');
+ return this.oldest_.value_;
+};
+
+
+/**
+ * @return {string} Last key.
+ */
+ol.structs.LRUCache.prototype.peekLastKey = function() {
+ goog.asserts.assert(this.oldest_, 'oldest must not be null');
+ return this.oldest_.key_;
+};
+
+
+/**
+ * @return {T} value Value.
+ */
+ol.structs.LRUCache.prototype.pop = function() {
+ goog.asserts.assert(this.oldest_, 'oldest must not be null');
+ goog.asserts.assert(this.newest_, 'newest must not be null');
+ var entry = this.oldest_;
+ goog.asserts.assert(entry.key_ in this.entries_,
+ 'oldest is indexed in entries');
+ delete this.entries_[entry.key_];
+ if (entry.newer) {
+ entry.newer.older = null;
+ }
+ this.oldest_ = /** @type {ol.LRUCacheEntry} */ (entry.newer);
+ if (!this.oldest_) {
+ this.newest_ = null;
+ }
+ --this.count_;
+ return entry.value_;
+};
+
+
+/**
+ * @param {string} key Key.
+ * @param {T} value Value.
+ */
+ol.structs.LRUCache.prototype.replace = function(key, value) {
+ this.get(key); // update `newest_`
+ this.entries_[key].value_ = value;
+};
+
+
+/**
+ * @param {string} key Key.
+ * @param {T} value Value.
+ */
+ol.structs.LRUCache.prototype.set = function(key, value) {
+ goog.asserts.assert(!(key in {}),
+ 'key is not a standard property of objects (e.g. "__proto__")');
+ goog.asserts.assert(!(key in this.entries_),
+ 'key is not used already');
+ var entry = /** @type {ol.LRUCacheEntry} */ ({
+ key_: key,
+ newer: null,
+ older: this.newest_,
+ value_: value
+ });
+ if (!this.newest_) {
+ this.oldest_ = entry;
+ } else {
+ this.newest_.newer = entry;
+ }
+ this.newest_ = entry;
+ this.entries_[key] = entry;
+ ++this.count_;
+};
+
+goog.provide('ol.tilecoord');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+
+
+/**
+ * @enum {number}
+ */
+ol.QuadKeyCharCode = {
+ ZERO: '0'.charCodeAt(0),
+ ONE: '1'.charCodeAt(0),
+ TWO: '2'.charCodeAt(0),
+ THREE: '3'.charCodeAt(0)
+};
+
+
+/**
+ * @param {string} str String that follows pattern “z/x/y” where x, y and z are
+ * numbers.
+ * @return {ol.TileCoord} Tile coord.
+ */
+ol.tilecoord.createFromString = function(str) {
+ var v = str.split('/');
+ goog.asserts.assert(v.length === 3,
+ 'must provide a string in "z/x/y" format, got "%s"', str);
+ return v.map(function(e) {
+ return parseInt(e, 10);
+ });
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {ol.TileCoord=} opt_tileCoord Tile coordinate.
+ * @return {ol.TileCoord} Tile coordinate.
+ */
+ol.tilecoord.createOrUpdate = function(z, x, y, opt_tileCoord) {
+ if (opt_tileCoord !== undefined) {
+ opt_tileCoord[0] = z;
+ opt_tileCoord[1] = x;
+ opt_tileCoord[2] = y;
+ return opt_tileCoord;
+ } else {
+ return [z, x, y];
+ }
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {string} Key.
+ */
+ol.tilecoord.getKeyZXY = function(z, x, y) {
+ return z + '/' + x + '/' + y;
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coord.
+ * @return {number} Hash.
+ */
+ol.tilecoord.hash = function(tileCoord) {
+ return (tileCoord[1] << tileCoord[0]) + tileCoord[2];
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coord.
+ * @return {string} Quad key.
+ */
+ol.tilecoord.quadKey = function(tileCoord) {
+ var z = tileCoord[0];
+ var digits = new Array(z);
+ var mask = 1 << (z - 1);
+ var i, charCode;
+ for (i = 0; i < z; ++i) {
+ charCode = ol.QuadKeyCharCode.ZERO;
+ if (tileCoord[1] & mask) {
+ charCode += 1;
+ }
+ if (tileCoord[2] & mask) {
+ charCode += 2;
+ }
+ digits[i] = String.fromCharCode(charCode);
+ mask >>= 1;
+ }
+ return digits.join('');
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.TileCoord} Tile coordinate.
+ */
+ol.tilecoord.wrapX = function(tileCoord, tileGrid, projection) {
+ var z = tileCoord[0];
+ var center = tileGrid.getTileCoordCenter(tileCoord);
+ var projectionExtent = ol.tilegrid.extentFromProjection(projection);
+ if (!ol.extent.containsCoordinate(projectionExtent, center)) {
+ var worldWidth = ol.extent.getWidth(projectionExtent);
+ var worldsAway = Math.ceil((projectionExtent[0] - center[0]) / worldWidth);
+ center[0] += worldWidth * worldsAway;
+ return tileGrid.getTileCoordForCoordAndZ(center, z);
+ } else {
+ return tileCoord;
+ }
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {!ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @return {boolean} Tile coordinate is within extent and zoom level range.
+ */
+ol.tilecoord.withinExtentAndZ = function(tileCoord, tileGrid) {
+ var z = tileCoord[0];
+ var x = tileCoord[1];
+ var y = tileCoord[2];
+
+ if (tileGrid.getMinZoom() > z || z > tileGrid.getMaxZoom()) {
+ return false;
+ }
+ var extent = tileGrid.getExtent();
+ var tileRange;
+ if (!extent) {
+ tileRange = tileGrid.getFullTileRange(z);
+ } else {
+ tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
+ }
+ if (!tileRange) {
+ return true;
+ } else {
+ return tileRange.containsXY(x, y);
+ }
+};
+
+goog.provide('ol.TileCache');
+
+goog.require('ol.TileRange');
+goog.require('ol.structs.LRUCache');
+goog.require('ol.tilecoord');
+
+
+/**
+ * @constructor
+ * @extends {ol.structs.LRUCache.<ol.Tile>}
+ * @param {number=} opt_highWaterMark High water mark.
+ * @struct
+ */
+ol.TileCache = function(opt_highWaterMark) {
+
+ ol.structs.LRUCache.call(this);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.highWaterMark_ = opt_highWaterMark !== undefined ? opt_highWaterMark : 2048;
+
+};
+ol.inherits(ol.TileCache, ol.structs.LRUCache);
+
+
+/**
+ * @return {boolean} Can expire cache.
+ */
+ol.TileCache.prototype.canExpireCache = function() {
+ return this.getCount() > this.highWaterMark_;
+};
+
+
+/**
+ * @param {Object.<string, ol.TileRange>} usedTiles Used tiles.
+ */
+ol.TileCache.prototype.expireCache = function(usedTiles) {
+ var tile, zKey;
+ while (this.canExpireCache()) {
+ tile = this.peekLast();
+ zKey = tile.tileCoord[0].toString();
+ if (zKey in usedTiles && usedTiles[zKey].contains(tile.tileCoord)) {
+ break;
+ } else {
+ this.pop().dispose();
+ }
+ }
+};
+
+
+/**
+ * Remove a tile range from the cache, e.g. to invalidate tiles.
+ * @param {ol.TileRange} tileRange The tile range to prune.
+ */
+ol.TileCache.prototype.pruneTileRange = function(tileRange) {
+ var i = this.getCount(),
+ key;
+ while (i--) {
+ key = this.peekLastKey();
+ if (tileRange.contains(ol.tilecoord.createFromString(key))) {
+ this.pop().dispose();
+ } else {
+ this.get(key);
+ }
+ }
+};
+
+goog.provide('ol.Tile');
+goog.provide('ol.TileState');
+
+goog.require('ol.events');
+goog.require('ol.events.EventTarget');
+goog.require('ol.events.EventType');
+
+
+/**
+ * @enum {number}
+ */
+ol.TileState = {
+ IDLE: 0,
+ LOADING: 1,
+ LOADED: 2,
+ ERROR: 3,
+ EMPTY: 4,
+ ABORT: 5
+};
+
+
+/**
+ * @classdesc
+ * Base class for tiles.
+ *
+ * @constructor
+ * @extends {ol.events.EventTarget}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileState} state State.
+ */
+ol.Tile = function(tileCoord, state) {
+
+ ol.events.EventTarget.call(this);
+
+ /**
+ * @type {ol.TileCoord}
+ */
+ this.tileCoord = tileCoord;
+
+ /**
+ * @protected
+ * @type {ol.TileState}
+ */
+ this.state = state;
+
+ /**
+ * An "interim" tile for this tile. The interim tile may be used while this
+ * one is loading, for "smooth" transitions when changing params/dimensions
+ * on the source.
+ * @type {ol.Tile}
+ */
+ this.interimTile = null;
+
+ /**
+ * A key assigned to the tile. This is used by the tile source to determine
+ * if this tile can effectively be used, or if a new tile should be created
+ * and this one be used as an interim tile for this new tile.
+ * @type {string}
+ */
+ this.key = '';
+
+};
+ol.inherits(ol.Tile, ol.events.EventTarget);
+
+
+/**
+ * @protected
+ */
+ol.Tile.prototype.changed = function() {
+ this.dispatchEvent(ol.events.EventType.CHANGE);
+};
+
+
+/**
+ * Get the HTML image element for this tile (may be a Canvas, Image, or Video).
+ * @function
+ * @param {Object=} opt_context Object.
+ * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.
+ */
+ol.Tile.prototype.getImage = goog.abstractMethod;
+
+
+/**
+ * @return {string} Key.
+ */
+ol.Tile.prototype.getKey = function() {
+ return goog.getUid(this).toString();
+};
+
+
+/**
+ * Get the tile coordinate for this tile.
+ * @return {ol.TileCoord} The tile coordinate.
+ * @api
+ */
+ol.Tile.prototype.getTileCoord = function() {
+ return this.tileCoord;
+};
+
+
+/**
+ * @return {ol.TileState} State.
+ */
+ol.Tile.prototype.getState = function() {
+ return this.state;
+};
+
+
+/**
+ * Load the image or retry if loading previously failed.
+ * Loading is taken care of by the tile queue, and calling this method is
+ * only needed for preloading or for reloading in case of an error.
+ * @api
+ */
+ol.Tile.prototype.load = goog.abstractMethod;
+
+goog.provide('ol.size');
+
+
+goog.require('goog.asserts');
+
+
+/**
+ * Returns a buffered size.
+ * @param {ol.Size} size Size.
+ * @param {number} buffer Buffer.
+ * @param {ol.Size=} opt_size Optional reusable size array.
+ * @return {ol.Size} The buffered size.
+ */
+ol.size.buffer = function(size, buffer, opt_size) {
+ if (opt_size === undefined) {
+ opt_size = [0, 0];
+ }
+ opt_size[0] = size[0] + 2 * buffer;
+ opt_size[1] = size[1] + 2 * buffer;
+ return opt_size;
+};
+
+
+/**
+ * Compares sizes for equality.
+ * @param {ol.Size} a Size.
+ * @param {ol.Size} b Size.
+ * @return {boolean} Equals.
+ */
+ol.size.equals = function(a, b) {
+ return a[0] == b[0] && a[1] == b[1];
+};
+
+
+/**
+ * Determines if a size has a positive area.
+ * @param {ol.Size} size The size to test.
+ * @return {boolean} The size has a positive area.
+ */
+ol.size.hasArea = function(size) {
+ return size[0] > 0 && size[1] > 0;
+};
+
+
+/**
+ * Returns a size scaled by a ratio. The result will be an array of integers.
+ * @param {ol.Size} size Size.
+ * @param {number} ratio Ratio.
+ * @param {ol.Size=} opt_size Optional reusable size array.
+ * @return {ol.Size} The scaled size.
+ */
+ol.size.scale = function(size, ratio, opt_size) {
+ if (opt_size === undefined) {
+ opt_size = [0, 0];
+ }
+ opt_size[0] = (size[0] * ratio + 0.5) | 0;
+ opt_size[1] = (size[1] * ratio + 0.5) | 0;
+ return opt_size;
+};
+
+
+/**
+ * Returns an `ol.Size` array for the passed in number (meaning: square) or
+ * `ol.Size` array.
+ * (meaning: non-square),
+ * @param {number|ol.Size} size Width and height.
+ * @param {ol.Size=} opt_size Optional reusable size array.
+ * @return {ol.Size} Size.
+ * @api stable
+ */
+ol.size.toSize = function(size, opt_size) {
+ if (Array.isArray(size)) {
+ return size;
+ } else {
+ goog.asserts.assert(goog.isNumber(size));
+ if (opt_size === undefined) {
+ opt_size = [size, size];
+ } else {
+ opt_size[0] = size;
+ opt_size[1] = size;
+ }
+ return opt_size;
+ }
+};
+
+goog.provide('ol.source.Source');
+goog.provide('ol.source.State');
+
+goog.require('ol');
+goog.require('ol.Attribution');
+goog.require('ol.Object');
+goog.require('ol.proj');
+
+
+/**
+ * State of the source, one of 'undefined', 'loading', 'ready' or 'error'.
+ * @enum {string}
+ */
+ol.source.State = {
+ UNDEFINED: 'undefined',
+ LOADING: 'loading',
+ READY: 'ready',
+ ERROR: 'error'
+};
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for {@link ol.layer.Layer} sources.
+ *
+ * A generic `change` event is triggered when the state of the source changes.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {ol.SourceSourceOptions} options Source options.
+ * @api stable
+ */
+ol.source.Source = function(options) {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {ol.proj.Projection}
+ */
+ this.projection_ = ol.proj.get(options.projection);
+
+ /**
+ * @private
+ * @type {Array.<ol.Attribution>}
+ */
+ this.attributions_ = ol.source.Source.toAttributionsArray_(options.attributions);
+
+ /**
+ * @private
+ * @type {string|olx.LogoOptions|undefined}
+ */
+ this.logo_ = options.logo;
+
+ /**
+ * @private
+ * @type {ol.source.State}
+ */
+ this.state_ = options.state !== undefined ?
+ options.state : ol.source.State.READY;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.wrapX_ = options.wrapX !== undefined ? options.wrapX : false;
+
+};
+ol.inherits(ol.source.Source, ol.Object);
+
+/**
+ * Turns various ways of defining an attribution to an array of `ol.Attributions`.
+ *
+ * @param {ol.AttributionLike|undefined}
+ * attributionLike The attributions as string, array of strings,
+ * `ol.Attribution`, array of `ol.Attribution` or undefined.
+ * @return {Array.<ol.Attribution>} The array of `ol.Attribution` or null if
+ * `undefined` was given.
+ */
+ol.source.Source.toAttributionsArray_ = function(attributionLike) {
+ if (typeof attributionLike === 'string') {
+ return [new ol.Attribution({html: attributionLike})];
+ } else if (attributionLike instanceof ol.Attribution) {
+ return [attributionLike];
+ } else if (Array.isArray(attributionLike)) {
+ var len = attributionLike.length;
+ var attributions = new Array(len);
+ for (var i = 0; i < len; i++) {
+ var item = attributionLike[i];
+ if (typeof item === 'string') {
+ attributions[i] = new ol.Attribution({html: item});
+ } else {
+ attributions[i] = item;
+ }
+ }
+ return attributions;
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {Object.<string, boolean>} skippedFeatureUids Skipped feature uids.
+ * @param {function((ol.Feature|ol.render.Feature)): T} callback Feature
+ * callback.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.source.Source.prototype.forEachFeatureAtCoordinate = ol.nullFunction;
+
+
+/**
+ * Get the attributions of the source.
+ * @return {Array.<ol.Attribution>} Attributions.
+ * @api stable
+ */
+ol.source.Source.prototype.getAttributions = function() {
+ return this.attributions_;
+};
+
+
+/**
+ * Get the logo of the source.
+ * @return {string|olx.LogoOptions|undefined} Logo.
+ * @api stable
+ */
+ol.source.Source.prototype.getLogo = function() {
+ return this.logo_;
+};
+
+
+/**
+ * Get the projection of the source.
+ * @return {ol.proj.Projection} Projection.
+ * @api
+ */
+ol.source.Source.prototype.getProjection = function() {
+ return this.projection_;
+};
+
+
+/**
+ * @return {Array.<number>|undefined} Resolutions.
+ */
+ol.source.Source.prototype.getResolutions = goog.abstractMethod;
+
+
+/**
+ * Get the state of the source, see {@link ol.source.State} for possible states.
+ * @return {ol.source.State} State.
+ * @api
+ */
+ol.source.Source.prototype.getState = function() {
+ return this.state_;
+};
+
+
+/**
+ * @return {boolean|undefined} Wrap X.
+ */
+ol.source.Source.prototype.getWrapX = function() {
+ return this.wrapX_;
+};
+
+
+/**
+ * Refreshes the source and finally dispatches a 'change' event.
+ * @api
+ */
+ol.source.Source.prototype.refresh = function() {
+ this.changed();
+};
+
+
+/**
+ * Set the attributions of the source.
+ * @param {ol.AttributionLike|undefined} attributions Attributions.
+ * Can be passed as `string`, `Array<string>`, `{@link ol.Attribution}`,
+ * `Array<{@link ol.Attribution}>` or `undefined`.
+ * @api
+ */
+ol.source.Source.prototype.setAttributions = function(attributions) {
+ this.attributions_ = ol.source.Source.toAttributionsArray_(attributions);
+ this.changed();
+};
+
+
+/**
+ * Set the logo of the source.
+ * @param {string|olx.LogoOptions|undefined} logo Logo.
+ */
+ol.source.Source.prototype.setLogo = function(logo) {
+ this.logo_ = logo;
+};
+
+
+/**
+ * Set the state of the source.
+ * @param {ol.source.State} state State.
+ * @protected
+ */
+ol.source.Source.prototype.setState = function(state) {
+ this.state_ = state;
+ this.changed();
+};
+
+goog.provide('ol.tilegrid.TileGrid');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.TileRange');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.extent.Corner');
+goog.require('ol.math');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.proj.METERS_PER_UNIT');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+goog.require('ol.size');
+goog.require('ol.tilecoord');
+
+
+/**
+ * @classdesc
+ * Base class for setting the grid pattern for sources accessing tiled-image
+ * servers.
+ *
+ * @constructor
+ * @param {olx.tilegrid.TileGridOptions} options Tile grid options.
+ * @struct
+ * @api stable
+ */
+ol.tilegrid.TileGrid = function(options) {
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.minZoom = options.minZoom !== undefined ? options.minZoom : 0;
+
+ /**
+ * @private
+ * @type {!Array.<number>}
+ */
+ this.resolutions_ = options.resolutions;
+ goog.asserts.assert(ol.array.isSorted(this.resolutions_, function(a, b) {
+ return b - a;
+ }, true), 'resolutions must be sorted in descending order');
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.maxZoom = this.resolutions_.length - 1;
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.origin_ = options.origin !== undefined ? options.origin : null;
+
+ /**
+ * @private
+ * @type {Array.<ol.Coordinate>}
+ */
+ this.origins_ = null;
+ if (options.origins !== undefined) {
+ this.origins_ = options.origins;
+ goog.asserts.assert(this.origins_.length == this.resolutions_.length,
+ 'number of origins and resolutions must be equal');
+ }
+
+ var extent = options.extent;
+
+ if (extent !== undefined &&
+ !this.origin_ && !this.origins_) {
+ this.origin_ = ol.extent.getTopLeft(extent);
+ }
+
+ goog.asserts.assert(
+ (!this.origin_ && this.origins_) ||
+ (this.origin_ && !this.origins_),
+ 'either origin or origins must be configured, never both');
+
+ /**
+ * @private
+ * @type {Array.<number|ol.Size>}
+ */
+ this.tileSizes_ = null;
+ if (options.tileSizes !== undefined) {
+ this.tileSizes_ = options.tileSizes;
+ goog.asserts.assert(this.tileSizes_.length == this.resolutions_.length,
+ 'number of tileSizes and resolutions must be equal');
+ }
+
+ /**
+ * @private
+ * @type {number|ol.Size}
+ */
+ this.tileSize_ = options.tileSize !== undefined ?
+ options.tileSize :
+ !this.tileSizes_ ? ol.DEFAULT_TILE_SIZE : null;
+ goog.asserts.assert(
+ (!this.tileSize_ && this.tileSizes_) ||
+ (this.tileSize_ && !this.tileSizes_),
+ 'either tileSize or tileSizes must be configured, never both');
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.extent_ = extent !== undefined ? extent : null;
+
+
+ /**
+ * @private
+ * @type {Array.<ol.TileRange>}
+ */
+ this.fullTileRanges_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.tmpSize_ = [0, 0];
+
+ if (options.sizes !== undefined) {
+ goog.asserts.assert(options.sizes.length == this.resolutions_.length,
+ 'number of sizes and resolutions must be equal');
+ this.fullTileRanges_ = options.sizes.map(function(size, z) {
+ goog.asserts.assert(size[0] !== 0, 'width must not be 0');
+ goog.asserts.assert(size[1] !== 0, 'height must not be 0');
+ var tileRange = new ol.TileRange(
+ Math.min(0, size[0]), Math.max(size[0] - 1, -1),
+ Math.min(0, size[1]), Math.max(size[1] - 1, -1));
+ if (this.minZoom <= z && z <= this.maxZoom && extent !== undefined) {
+ goog.asserts.assert(tileRange.containsTileRange(
+ this.getTileRangeForExtentAndZ(extent, z)),
+ 'extent tile range must not exceed tilegrid width and height');
+ }
+ return tileRange;
+ }, this);
+ } else if (extent) {
+ this.calculateTileRanges_(extent);
+ }
+
+};
+
+
+/**
+ * @private
+ * @type {ol.TileCoord}
+ */
+ol.tilegrid.TileGrid.tmpTileCoord_ = [0, 0, 0];
+
+
+/**
+ * Call a function with each tile coordinate for a given extent and zoom level.
+ *
+ * @param {ol.Extent} extent Extent.
+ * @param {number} zoom Zoom level.
+ * @param {function(ol.TileCoord)} callback Function called with each tile coordinate.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.forEachTileCoord = function(extent, zoom, callback) {
+ var tileRange = this.getTileRangeForExtentAndZ(extent, zoom);
+ for (var i = tileRange.minX, ii = tileRange.maxX; i <= ii; ++i) {
+ for (var j = tileRange.minY, jj = tileRange.maxY; j <= jj; ++j) {
+ callback([zoom, i, j]);
+ }
+ }
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {function(this: T, number, ol.TileRange): boolean} callback Callback.
+ * @param {T=} opt_this The object to use as `this` in `callback`.
+ * @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object.
+ * @param {ol.Extent=} opt_extent Temporary ol.Extent object.
+ * @return {boolean} Callback succeeded.
+ * @template T
+ */
+ol.tilegrid.TileGrid.prototype.forEachTileCoordParentTileRange = function(tileCoord, callback, opt_this, opt_tileRange, opt_extent) {
+ var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);
+ var z = tileCoord[0] - 1;
+ while (z >= this.minZoom) {
+ if (callback.call(opt_this, z,
+ this.getTileRangeForExtentAndZ(tileCoordExtent, z, opt_tileRange))) {
+ return true;
+ }
+ --z;
+ }
+ return false;
+};
+
+
+/**
+ * Get the extent for this tile grid, if it was configured.
+ * @return {ol.Extent} Extent.
+ */
+ol.tilegrid.TileGrid.prototype.getExtent = function() {
+ return this.extent_;
+};
+
+
+/**
+ * Get the maximum zoom level for the grid.
+ * @return {number} Max zoom.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getMaxZoom = function() {
+ return this.maxZoom;
+};
+
+
+/**
+ * Get the minimum zoom level for the grid.
+ * @return {number} Min zoom.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getMinZoom = function() {
+ return this.minZoom;
+};
+
+
+/**
+ * Get the origin for the grid at the given zoom level.
+ * @param {number} z Z.
+ * @return {ol.Coordinate} Origin.
+ * @api stable
+ */
+ol.tilegrid.TileGrid.prototype.getOrigin = function(z) {
+ if (this.origin_) {
+ return this.origin_;
+ } else {
+ goog.asserts.assert(this.origins_,
+ 'origins cannot be null if origin is null');
+ goog.asserts.assert(this.minZoom <= z && z <= this.maxZoom,
+ 'given z is not in allowed range (%s <= %s <= %s)',
+ this.minZoom, z, this.maxZoom);
+ return this.origins_[z];
+ }
+};
+
+
+/**
+ * Get the resolution for the given zoom level.
+ * @param {number} z Z.
+ * @return {number} Resolution.
+ * @api stable
+ */
+ol.tilegrid.TileGrid.prototype.getResolution = function(z) {
+ goog.asserts.assert(this.minZoom <= z && z <= this.maxZoom,
+ 'given z is not in allowed range (%s <= %s <= %s)',
+ this.minZoom, z, this.maxZoom);
+ return this.resolutions_[z];
+};
+
+
+/**
+ * Get the list of resolutions for the tile grid.
+ * @return {Array.<number>} Resolutions.
+ * @api stable
+ */
+ol.tilegrid.TileGrid.prototype.getResolutions = function() {
+ return this.resolutions_;
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object.
+ * @param {ol.Extent=} opt_extent Temporary ol.Extent object.
+ * @return {ol.TileRange} Tile range.
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordChildTileRange = function(tileCoord, opt_tileRange, opt_extent) {
+ if (tileCoord[0] < this.maxZoom) {
+ var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);
+ return this.getTileRangeForExtentAndZ(
+ tileCoordExtent, tileCoord[0] + 1, opt_tileRange);
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {ol.TileRange} tileRange Tile range.
+ * @param {ol.Extent=} opt_extent Temporary ol.Extent object.
+ * @return {ol.Extent} Extent.
+ */
+ol.tilegrid.TileGrid.prototype.getTileRangeExtent = function(z, tileRange, opt_extent) {
+ var origin = this.getOrigin(z);
+ var resolution = this.getResolution(z);
+ var tileSize = ol.size.toSize(this.getTileSize(z), this.tmpSize_);
+ var minX = origin[0] + tileRange.minX * tileSize[0] * resolution;
+ var maxX = origin[0] + (tileRange.maxX + 1) * tileSize[0] * resolution;
+ var minY = origin[1] + tileRange.minY * tileSize[1] * resolution;
+ var maxY = origin[1] + (tileRange.maxY + 1) * tileSize[1] * resolution;
+ return ol.extent.createOrUpdate(minX, minY, maxX, maxY, opt_extent);
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {ol.TileRange=} opt_tileRange Temporary tile range object.
+ * @return {ol.TileRange} Tile range.
+ */
+ol.tilegrid.TileGrid.prototype.getTileRangeForExtentAndResolution = function(extent, resolution, opt_tileRange) {
+ var tileCoord = ol.tilegrid.TileGrid.tmpTileCoord_;
+ this.getTileCoordForXYAndResolution_(
+ extent[0], extent[1], resolution, false, tileCoord);
+ var minX = tileCoord[1];
+ var minY = tileCoord[2];
+ this.getTileCoordForXYAndResolution_(
+ extent[2], extent[3], resolution, true, tileCoord);
+ return ol.TileRange.createOrUpdate(
+ minX, tileCoord[1], minY, tileCoord[2], opt_tileRange);
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} z Z.
+ * @param {ol.TileRange=} opt_tileRange Temporary tile range object.
+ * @return {ol.TileRange} Tile range.
+ */
+ol.tilegrid.TileGrid.prototype.getTileRangeForExtentAndZ = function(extent, z, opt_tileRange) {
+ var resolution = this.getResolution(z);
+ return this.getTileRangeForExtentAndResolution(
+ extent, resolution, opt_tileRange);
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @return {ol.Coordinate} Tile center.
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordCenter = function(tileCoord) {
+ var origin = this.getOrigin(tileCoord[0]);
+ var resolution = this.getResolution(tileCoord[0]);
+ var tileSize = ol.size.toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);
+ return [
+ origin[0] + (tileCoord[1] + 0.5) * tileSize[0] * resolution,
+ origin[1] + (tileCoord[2] + 0.5) * tileSize[1] * resolution
+ ];
+};
+
+
+/**
+ * Get the extent of a tile coordinate.
+ *
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.Extent=} opt_extent Temporary extent object.
+ * @return {ol.Extent} Extent.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordExtent = function(tileCoord, opt_extent) {
+ var origin = this.getOrigin(tileCoord[0]);
+ var resolution = this.getResolution(tileCoord[0]);
+ var tileSize = ol.size.toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);
+ var minX = origin[0] + tileCoord[1] * tileSize[0] * resolution;
+ var minY = origin[1] + tileCoord[2] * tileSize[1] * resolution;
+ var maxX = minX + tileSize[0] * resolution;
+ var maxY = minY + tileSize[1] * resolution;
+ return ol.extent.createOrUpdate(minX, minY, maxX, maxY, opt_extent);
+};
+
+
+/**
+ * Get the tile coordinate for the given map coordinate and resolution. This
+ * method considers that coordinates that intersect tile boundaries should be
+ * assigned the higher tile coordinate.
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {ol.TileCoord=} opt_tileCoord Destination ol.TileCoord object.
+ * @return {ol.TileCoord} Tile coordinate.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordForCoordAndResolution = function(coordinate, resolution, opt_tileCoord) {
+ return this.getTileCoordForXYAndResolution_(
+ coordinate[0], coordinate[1], resolution, false, opt_tileCoord);
+};
+
+
+/**
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {number} resolution Resolution.
+ * @param {boolean} reverseIntersectionPolicy Instead of letting edge
+ * intersections go to the higher tile coordinate, let edge intersections
+ * go to the lower tile coordinate.
+ * @param {ol.TileCoord=} opt_tileCoord Temporary ol.TileCoord object.
+ * @return {ol.TileCoord} Tile coordinate.
+ * @private
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordForXYAndResolution_ = function(
+ x, y, resolution, reverseIntersectionPolicy, opt_tileCoord) {
+ var z = this.getZForResolution(resolution);
+ var scale = resolution / this.getResolution(z);
+ var origin = this.getOrigin(z);
+ var tileSize = ol.size.toSize(this.getTileSize(z), this.tmpSize_);
+
+ var adjustX = reverseIntersectionPolicy ? 0.5 : 0;
+ var adjustY = reverseIntersectionPolicy ? 0 : 0.5;
+ var xFromOrigin = Math.floor((x - origin[0]) / resolution + adjustX);
+ var yFromOrigin = Math.floor((y - origin[1]) / resolution + adjustY);
+ var tileCoordX = scale * xFromOrigin / tileSize[0];
+ var tileCoordY = scale * yFromOrigin / tileSize[1];
+
+ if (reverseIntersectionPolicy) {
+ tileCoordX = Math.ceil(tileCoordX) - 1;
+ tileCoordY = Math.ceil(tileCoordY) - 1;
+ } else {
+ tileCoordX = Math.floor(tileCoordX);
+ tileCoordY = Math.floor(tileCoordY);
+ }
+
+ return ol.tilecoord.createOrUpdate(z, tileCoordX, tileCoordY, opt_tileCoord);
+};
+
+
+/**
+ * Get a tile coordinate given a map coordinate and zoom level.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} z Zoom level.
+ * @param {ol.TileCoord=} opt_tileCoord Destination ol.TileCoord object.
+ * @return {ol.TileCoord} Tile coordinate.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordForCoordAndZ = function(coordinate, z, opt_tileCoord) {
+ var resolution = this.getResolution(z);
+ return this.getTileCoordForXYAndResolution_(
+ coordinate[0], coordinate[1], resolution, false, opt_tileCoord);
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @return {number} Tile resolution.
+ */
+ol.tilegrid.TileGrid.prototype.getTileCoordResolution = function(tileCoord) {
+ goog.asserts.assert(
+ this.minZoom <= tileCoord[0] && tileCoord[0] <= this.maxZoom,
+ 'z of given tilecoord is not in allowed range (%s <= %s <= %s',
+ this.minZoom, tileCoord[0], this.maxZoom);
+ return this.resolutions_[tileCoord[0]];
+};
+
+
+/**
+ * Get the tile size for a zoom level. The type of the return value matches the
+ * `tileSize` or `tileSizes` that the tile grid was configured with. To always
+ * get an `ol.Size`, run the result through `ol.size.toSize()`.
+ * @param {number} z Z.
+ * @return {number|ol.Size} Tile size.
+ * @api stable
+ */
+ol.tilegrid.TileGrid.prototype.getTileSize = function(z) {
+ if (this.tileSize_) {
+ return this.tileSize_;
+ } else {
+ goog.asserts.assert(this.tileSizes_,
+ 'tileSizes cannot be null if tileSize is null');
+ goog.asserts.assert(this.minZoom <= z && z <= this.maxZoom,
+ 'z is not in allowed range (%s <= %s <= %s',
+ this.minZoom, z, this.maxZoom);
+ return this.tileSizes_[z];
+ }
+};
+
+
+/**
+ * @param {number} z Zoom level.
+ * @return {ol.TileRange} Extent tile range for the specified zoom level.
+ */
+ol.tilegrid.TileGrid.prototype.getFullTileRange = function(z) {
+ if (!this.fullTileRanges_) {
+ return null;
+ } else {
+ goog.asserts.assert(this.minZoom <= z && z <= this.maxZoom,
+ 'z is not in allowed range (%s <= %s <= %s',
+ this.minZoom, z, this.maxZoom);
+ return this.fullTileRanges_[z];
+ }
+};
+
+
+/**
+ * @param {number} resolution Resolution.
+ * @param {number=} opt_direction If 0, the nearest resolution will be used.
+ * If 1, the nearest lower resolution will be used. If -1, the nearest
+ * higher resolution will be used. Default is 0.
+ * @return {number} Z.
+ * @api
+ */
+ol.tilegrid.TileGrid.prototype.getZForResolution = function(
+ resolution, opt_direction) {
+ var z = ol.array.linearFindNearest(this.resolutions_, resolution,
+ opt_direction || 0);
+ return ol.math.clamp(z, this.minZoom, this.maxZoom);
+};
+
+
+/**
+ * @param {!ol.Extent} extent Extent for this tile grid.
+ * @private
+ */
+ol.tilegrid.TileGrid.prototype.calculateTileRanges_ = function(extent) {
+ var length = this.resolutions_.length;
+ var fullTileRanges = new Array(length);
+ for (var z = this.minZoom; z < length; ++z) {
+ fullTileRanges[z] = this.getTileRangeForExtentAndZ(extent, z);
+ }
+ this.fullTileRanges_ = fullTileRanges;
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.tilegrid.TileGrid} Default tile grid for the passed projection.
+ */
+ol.tilegrid.getForProjection = function(projection) {
+ var tileGrid = projection.getDefaultTileGrid();
+ if (!tileGrid) {
+ tileGrid = ol.tilegrid.createForProjection(projection);
+ projection.setDefaultTileGrid(tileGrid);
+ }
+ return tileGrid;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ * ol.DEFAULT_MAX_ZOOM).
+ * @param {number|ol.Size=} opt_tileSize Tile size (default uses
+ * ol.DEFAULT_TILE_SIZE).
+ * @param {ol.extent.Corner=} opt_corner Extent corner (default is
+ * ol.extent.Corner.TOP_LEFT).
+ * @return {ol.tilegrid.TileGrid} TileGrid instance.
+ */
+ol.tilegrid.createForExtent = function(extent, opt_maxZoom, opt_tileSize, opt_corner) {
+ var corner = opt_corner !== undefined ?
+ opt_corner : ol.extent.Corner.TOP_LEFT;
+
+ var resolutions = ol.tilegrid.resolutionsFromExtent(
+ extent, opt_maxZoom, opt_tileSize);
+
+ return new ol.tilegrid.TileGrid({
+ extent: extent,
+ origin: ol.extent.getCorner(extent, corner),
+ resolutions: resolutions,
+ tileSize: opt_tileSize
+ });
+};
+
+
+/**
+ * Creates a tile grid with a standard XYZ tiling scheme.
+ * @param {olx.tilegrid.XYZOptions=} opt_options Tile grid options.
+ * @return {ol.tilegrid.TileGrid} Tile grid instance.
+ * @api
+ */
+ol.tilegrid.createXYZ = function(opt_options) {
+ var options = /** @type {olx.tilegrid.TileGridOptions} */ ({});
+ ol.object.assign(options, opt_options !== undefined ?
+ opt_options : /** @type {olx.tilegrid.XYZOptions} */ ({}));
+ if (options.extent === undefined) {
+ options.extent = ol.proj.get('EPSG:3857').getExtent();
+ }
+ options.resolutions = ol.tilegrid.resolutionsFromExtent(
+ options.extent, options.maxZoom, options.tileSize);
+ delete options.maxZoom;
+
+ return new ol.tilegrid.TileGrid(options);
+};
+
+
+/**
+ * Create a resolutions array from an extent. A zoom factor of 2 is assumed.
+ * @param {ol.Extent} extent Extent.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ * ol.DEFAULT_MAX_ZOOM).
+ * @param {number|ol.Size=} opt_tileSize Tile size (default uses
+ * ol.DEFAULT_TILE_SIZE).
+ * @return {!Array.<number>} Resolutions array.
+ */
+ol.tilegrid.resolutionsFromExtent = function(extent, opt_maxZoom, opt_tileSize) {
+ var maxZoom = opt_maxZoom !== undefined ?
+ opt_maxZoom : ol.DEFAULT_MAX_ZOOM;
+
+ var height = ol.extent.getHeight(extent);
+ var width = ol.extent.getWidth(extent);
+
+ var tileSize = ol.size.toSize(opt_tileSize !== undefined ?
+ opt_tileSize : ol.DEFAULT_TILE_SIZE);
+ var maxResolution = Math.max(
+ width / tileSize[0], height / tileSize[1]);
+
+ var length = maxZoom + 1;
+ var resolutions = new Array(length);
+ for (var z = 0; z < length; ++z) {
+ resolutions[z] = maxResolution / Math.pow(2, z);
+ }
+ return resolutions;
+};
+
+
+/**
+ * @param {ol.ProjectionLike} projection Projection.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ * ol.DEFAULT_MAX_ZOOM).
+ * @param {ol.Size=} opt_tileSize Tile size (default uses ol.DEFAULT_TILE_SIZE).
+ * @param {ol.extent.Corner=} opt_corner Extent corner (default is
+ * ol.extent.Corner.BOTTOM_LEFT).
+ * @return {ol.tilegrid.TileGrid} TileGrid instance.
+ */
+ol.tilegrid.createForProjection = function(projection, opt_maxZoom, opt_tileSize, opt_corner) {
+ var extent = ol.tilegrid.extentFromProjection(projection);
+ return ol.tilegrid.createForExtent(
+ extent, opt_maxZoom, opt_tileSize, opt_corner);
+};
+
+
+/**
+ * Generate a tile grid extent from a projection. If the projection has an
+ * extent, it is used. If not, a global extent is assumed.
+ * @param {ol.ProjectionLike} projection Projection.
+ * @return {ol.Extent} Extent.
+ */
+ol.tilegrid.extentFromProjection = function(projection) {
+ projection = ol.proj.get(projection);
+ var extent = projection.getExtent();
+ if (!extent) {
+ var half = 180 * ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] /
+ projection.getMetersPerUnit();
+ extent = ol.extent.createOrUpdate(-half, -half, half, half);
+ }
+ return extent;
+};
+
+goog.provide('ol.source.Tile');
+goog.provide('ol.source.TileEvent');
+
+goog.require('goog.asserts');
+goog.require('ol.events.Event');
+goog.require('ol');
+goog.require('ol.TileCache');
+goog.require('ol.TileRange');
+goog.require('ol.TileState');
+goog.require('ol.proj');
+goog.require('ol.size');
+goog.require('ol.source.Source');
+goog.require('ol.tilecoord');
+goog.require('ol.tilegrid.TileGrid');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for sources providing images divided into a tile grid.
+ *
+ * @constructor
+ * @extends {ol.source.Source}
+ * @param {ol.SourceTileOptions} options Tile source options.
+ * @api
+ */
+ol.source.Tile = function(options) {
+
+ ol.source.Source.call(this, {
+ attributions: options.attributions,
+ extent: options.extent,
+ logo: options.logo,
+ projection: options.projection,
+ state: options.state,
+ wrapX: options.wrapX
+ });
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.opaque_ = options.opaque !== undefined ? options.opaque : false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.tilePixelRatio_ = options.tilePixelRatio !== undefined ?
+ options.tilePixelRatio : 1;
+
+ /**
+ * @protected
+ * @type {ol.tilegrid.TileGrid}
+ */
+ this.tileGrid = options.tileGrid !== undefined ? options.tileGrid : null;
+
+ /**
+ * @protected
+ * @type {ol.TileCache}
+ */
+ this.tileCache = new ol.TileCache(options.cacheSize);
+
+ /**
+ * @protected
+ * @type {ol.Size}
+ */
+ this.tmpSize = [0, 0];
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.key_ = '';
+
+};
+ol.inherits(ol.source.Tile, ol.source.Source);
+
+
+/**
+ * @return {boolean} Can expire cache.
+ */
+ol.source.Tile.prototype.canExpireCache = function() {
+ return this.tileCache.canExpireCache();
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {Object.<string, ol.TileRange>} usedTiles Used tiles.
+ */
+ol.source.Tile.prototype.expireCache = function(projection, usedTiles) {
+ var tileCache = this.getTileCacheForProjection(projection);
+ if (tileCache) {
+ tileCache.expireCache(usedTiles);
+ }
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {number} z Zoom level.
+ * @param {ol.TileRange} tileRange Tile range.
+ * @param {function(ol.Tile):(boolean|undefined)} callback Called with each
+ * loaded tile. If the callback returns `false`, the tile will not be
+ * considered loaded.
+ * @return {boolean} The tile range is fully covered with loaded tiles.
+ */
+ol.source.Tile.prototype.forEachLoadedTile = function(projection, z, tileRange, callback) {
+ var tileCache = this.getTileCacheForProjection(projection);
+ if (!tileCache) {
+ return false;
+ }
+
+ var covered = true;
+ var tile, tileCoordKey, loaded;
+ for (var x = tileRange.minX; x <= tileRange.maxX; ++x) {
+ for (var y = tileRange.minY; y <= tileRange.maxY; ++y) {
+ tileCoordKey = this.getKeyZXY(z, x, y);
+ loaded = false;
+ if (tileCache.containsKey(tileCoordKey)) {
+ tile = /** @type {!ol.Tile} */ (tileCache.get(tileCoordKey));
+ loaded = tile.getState() === ol.TileState.LOADED;
+ if (loaded) {
+ loaded = (callback(tile) !== false);
+ }
+ }
+ if (!loaded) {
+ covered = false;
+ }
+ }
+ }
+ return covered;
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {number} Gutter.
+ */
+ol.source.Tile.prototype.getGutter = function(projection) {
+ return 0;
+};
+
+
+/**
+ * Return the key to be used for all tiles in the source.
+ * @return {string} The key for all tiles.
+ * @protected
+ */
+ol.source.Tile.prototype.getKey = function() {
+ return this.key_;
+};
+
+
+/**
+ * Set the value to be used as the key for all tiles in the source.
+ * @param {string} key The key for tiles.
+ * @protected
+ */
+ol.source.Tile.prototype.setKey = function(key) {
+ if (this.key_ !== key) {
+ this.key_ = key;
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @return {string} Key.
+ * @protected
+ */
+ol.source.Tile.prototype.getKeyZXY = ol.tilecoord.getKeyZXY;
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {boolean} Opaque.
+ */
+ol.source.Tile.prototype.getOpaque = function(projection) {
+ return this.opaque_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.Tile.prototype.getResolutions = function() {
+ return this.tileGrid.getResolutions();
+};
+
+
+/**
+ * @param {number} z Tile coordinate z.
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {!ol.Tile} Tile.
+ */
+ol.source.Tile.prototype.getTile = goog.abstractMethod;
+
+
+/**
+ * Return the tile grid of the tile source.
+ * @return {ol.tilegrid.TileGrid} Tile grid.
+ * @api stable
+ */
+ol.source.Tile.prototype.getTileGrid = function() {
+ return this.tileGrid;
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.tilegrid.TileGrid} Tile grid.
+ */
+ol.source.Tile.prototype.getTileGridForProjection = function(projection) {
+ if (!this.tileGrid) {
+ return ol.tilegrid.getForProjection(projection);
+ } else {
+ return this.tileGrid;
+ }
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.TileCache} Tile cache.
+ * @protected
+ */
+ol.source.Tile.prototype.getTileCacheForProjection = function(projection) {
+ var thisProj = this.getProjection();
+ if (thisProj && !ol.proj.equivalent(thisProj, projection)) {
+ return null;
+ } else {
+ return this.tileCache;
+ }
+};
+
+
+/**
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {number} Tile pixel ratio.
+ */
+ol.source.Tile.prototype.getTilePixelRatio = function(pixelRatio) {
+ return this.tilePixelRatio_;
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.Size} Tile size.
+ */
+ol.source.Tile.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
+ var tileGrid = this.getTileGridForProjection(projection);
+ var tilePixelRatio = this.getTilePixelRatio(pixelRatio);
+ var tileSize = ol.size.toSize(tileGrid.getTileSize(z), this.tmpSize);
+ if (tilePixelRatio == 1) {
+ return tileSize;
+ } else {
+ return ol.size.scale(tileSize, tilePixelRatio, this.tmpSize);
+ }
+};
+
+
+/**
+ * Returns a tile coordinate wrapped around the x-axis. When the tile coordinate
+ * is outside the resolution and extent range of the tile grid, `null` will be
+ * returned.
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.proj.Projection=} opt_projection Projection.
+ * @return {ol.TileCoord} Tile coordinate to be passed to the tileUrlFunction or
+ * null if no tile URL should be created for the passed `tileCoord`.
+ */
+ol.source.Tile.prototype.getTileCoordForTileUrlFunction = function(tileCoord, opt_projection) {
+ var projection = opt_projection !== undefined ?
+ opt_projection : this.getProjection();
+ var tileGrid = this.getTileGridForProjection(projection);
+ goog.asserts.assert(tileGrid, 'tile grid needed');
+ if (this.getWrapX() && projection.isGlobal()) {
+ tileCoord = ol.tilecoord.wrapX(tileCoord, tileGrid, projection);
+ }
+ return ol.tilecoord.withinExtentAndZ(tileCoord, tileGrid) ? tileCoord : null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.Tile.prototype.refresh = function() {
+ this.tileCache.clear();
+ this.changed();
+};
+
+
+/**
+ * Marks a tile coord as being used, without triggering a load.
+ * @param {number} z Tile coordinate z.
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @param {ol.proj.Projection} projection Projection.
+ */
+ol.source.Tile.prototype.useTile = ol.nullFunction;
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.source.Tile} instances are instances of this
+ * type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.source.TileEvent}
+ * @param {string} type Type.
+ * @param {ol.Tile} tile The tile.
+ */
+ol.source.TileEvent = function(type, tile) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The tile related to the event.
+ * @type {ol.Tile}
+ * @api
+ */
+ this.tile = tile;
+
+};
+ol.inherits(ol.source.TileEvent, ol.events.Event);
+
+
+/**
+ * @enum {string}
+ */
+ol.source.TileEventType = {
+
+ /**
+ * Triggered when a tile starts loading.
+ * @event ol.source.TileEvent#tileloadstart
+ * @api stable
+ */
+ TILELOADSTART: 'tileloadstart',
+
+ /**
+ * Triggered when a tile finishes loading.
+ * @event ol.source.TileEvent#tileloadend
+ * @api stable
+ */
+ TILELOADEND: 'tileloadend',
+
+ /**
+ * Triggered if tile loading results in an error.
+ * @event ol.source.TileEvent#tileloaderror
+ * @api stable
+ */
+ TILELOADERROR: 'tileloaderror'
+
+};
+
+// FIXME handle date line wrap
+
+goog.provide('ol.control.Attribution');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.dom');
+goog.require('ol.Attribution');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.object');
+goog.require('ol.source.Tile');
+
+
+/**
+ * @classdesc
+ * Control to show all the attributions associated with the layer sources
+ * in the map. This control is one of the default controls included in maps.
+ * By default it will show in the bottom right portion of the map, but this can
+ * be changed by using a css selector for `.ol-attribution`.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.AttributionOptions=} opt_options Attribution options.
+ * @api stable
+ */
+ol.control.Attribution = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.ulElement_ = document.createElement('UL');
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.logoLi_ = document.createElement('LI');
+
+ this.ulElement_.appendChild(this.logoLi_);
+ this.logoLi_.style.display = 'none';
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.collapsed_ = options.collapsed !== undefined ? options.collapsed : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.collapsible_ = options.collapsible !== undefined ?
+ options.collapsible : true;
+
+ if (!this.collapsible_) {
+ this.collapsed_ = false;
+ }
+
+ var className = options.className !== undefined ? options.className : 'ol-attribution';
+
+ var tipLabel = options.tipLabel !== undefined ? options.tipLabel : 'Attributions';
+
+ var collapseLabel = options.collapseLabel !== undefined ? options.collapseLabel : '\u00BB';
+
+ if (typeof collapseLabel === 'string') {
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.collapseLabel_ = document.createElement('span');
+ this.collapseLabel_.textContent = collapseLabel;
+ } else {
+ this.collapseLabel_ = collapseLabel;
+ }
+
+ var label = options.label !== undefined ? options.label : 'i';
+
+ if (typeof label === 'string') {
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.label_ = document.createElement('span');
+ this.label_.textContent = label;
+ } else {
+ this.label_ = label;
+ }
+
+
+ var activeLabel = (this.collapsible_ && !this.collapsed_) ?
+ this.collapseLabel_ : this.label_;
+ var button = document.createElement('button');
+ button.setAttribute('type', 'button');
+ button.title = tipLabel;
+ button.appendChild(activeLabel);
+
+ ol.events.listen(button, ol.events.EventType.CLICK, this.handleClick_, this);
+
+ var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
+ ol.css.CLASS_CONTROL +
+ (this.collapsed_ && this.collapsible_ ? ' ol-collapsed' : '') +
+ (this.collapsible_ ? '' : ' ol-uncollapsible');
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(this.ulElement_);
+ element.appendChild(button);
+
+ var render = options.render ? options.render : ol.control.Attribution.render;
+
+ ol.control.Control.call(this, {
+ element: element,
+ render: render,
+ target: options.target
+ });
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = true;
+
+ /**
+ * @private
+ * @type {Object.<string, Element>}
+ */
+ this.attributionElements_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, boolean>}
+ */
+ this.attributionElementRenderedVisible_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, Element>}
+ */
+ this.logoElements_ = {};
+
+};
+ol.inherits(ol.control.Attribution, ol.control.Control);
+
+
+/**
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {Array.<Object.<string, ol.Attribution>>} Attributions.
+ */
+ol.control.Attribution.prototype.getSourceAttributions = function(frameState) {
+ var i, ii, j, jj, tileRanges, source, sourceAttribution,
+ sourceAttributionKey, sourceAttributions, sourceKey;
+ var intersectsTileRange;
+ var layerStatesArray = frameState.layerStatesArray;
+ /** @type {Object.<string, ol.Attribution>} */
+ var attributions = ol.object.assign({}, frameState.attributions);
+ /** @type {Object.<string, ol.Attribution>} */
+ var hiddenAttributions = {};
+ var projection = frameState.viewState.projection;
+ goog.asserts.assert(projection, 'projection of viewState required');
+ for (i = 0, ii = layerStatesArray.length; i < ii; i++) {
+ source = layerStatesArray[i].layer.getSource();
+ if (!source) {
+ continue;
+ }
+ sourceKey = goog.getUid(source).toString();
+ sourceAttributions = source.getAttributions();
+ if (!sourceAttributions) {
+ continue;
+ }
+ for (j = 0, jj = sourceAttributions.length; j < jj; j++) {
+ sourceAttribution = sourceAttributions[j];
+ sourceAttributionKey = goog.getUid(sourceAttribution).toString();
+ if (sourceAttributionKey in attributions) {
+ continue;
+ }
+ tileRanges = frameState.usedTiles[sourceKey];
+ if (tileRanges) {
+ goog.asserts.assertInstanceof(source, ol.source.Tile,
+ 'source should be an ol.source.Tile');
+ var tileGrid = source.getTileGridForProjection(projection);
+ goog.asserts.assert(tileGrid, 'tileGrid required for projection');
+ intersectsTileRange = sourceAttribution.intersectsAnyTileRange(
+ tileRanges, tileGrid, projection);
+ } else {
+ intersectsTileRange = false;
+ }
+ if (intersectsTileRange) {
+ if (sourceAttributionKey in hiddenAttributions) {
+ delete hiddenAttributions[sourceAttributionKey];
+ }
+ attributions[sourceAttributionKey] = sourceAttribution;
+ } else {
+ hiddenAttributions[sourceAttributionKey] = sourceAttribution;
+ }
+ }
+ }
+ return [attributions, hiddenAttributions];
+};
+
+
+/**
+ * Update the attribution element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.Attribution}
+ * @api
+ */
+ol.control.Attribution.render = function(mapEvent) {
+ this.updateElement_(mapEvent.frameState);
+};
+
+
+/**
+ * @private
+ * @param {?olx.FrameState} frameState Frame state.
+ */
+ol.control.Attribution.prototype.updateElement_ = function(frameState) {
+
+ if (!frameState) {
+ if (this.renderedVisible_) {
+ this.element.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return;
+ }
+
+ var attributions = this.getSourceAttributions(frameState);
+ /** @type {Object.<string, ol.Attribution>} */
+ var visibleAttributions = attributions[0];
+ /** @type {Object.<string, ol.Attribution>} */
+ var hiddenAttributions = attributions[1];
+
+ var attributionElement, attributionKey;
+ for (attributionKey in this.attributionElements_) {
+ if (attributionKey in visibleAttributions) {
+ if (!this.attributionElementRenderedVisible_[attributionKey]) {
+ this.attributionElements_[attributionKey].style.display = '';
+ this.attributionElementRenderedVisible_[attributionKey] = true;
+ }
+ delete visibleAttributions[attributionKey];
+ } else if (attributionKey in hiddenAttributions) {
+ if (this.attributionElementRenderedVisible_[attributionKey]) {
+ this.attributionElements_[attributionKey].style.display = 'none';
+ delete this.attributionElementRenderedVisible_[attributionKey];
+ }
+ delete hiddenAttributions[attributionKey];
+ } else {
+ ol.dom.removeNode(this.attributionElements_[attributionKey]);
+ delete this.attributionElements_[attributionKey];
+ delete this.attributionElementRenderedVisible_[attributionKey];
+ }
+ }
+ for (attributionKey in visibleAttributions) {
+ attributionElement = document.createElement('LI');
+ attributionElement.innerHTML =
+ visibleAttributions[attributionKey].getHTML();
+ this.ulElement_.appendChild(attributionElement);
+ this.attributionElements_[attributionKey] = attributionElement;
+ this.attributionElementRenderedVisible_[attributionKey] = true;
+ }
+ for (attributionKey in hiddenAttributions) {
+ attributionElement = document.createElement('LI');
+ attributionElement.innerHTML =
+ hiddenAttributions[attributionKey].getHTML();
+ attributionElement.style.display = 'none';
+ this.ulElement_.appendChild(attributionElement);
+ this.attributionElements_[attributionKey] = attributionElement;
+ }
+
+ var renderVisible =
+ !ol.object.isEmpty(this.attributionElementRenderedVisible_) ||
+ !ol.object.isEmpty(frameState.logos);
+ if (this.renderedVisible_ != renderVisible) {
+ this.element.style.display = renderVisible ? '' : 'none';
+ this.renderedVisible_ = renderVisible;
+ }
+ if (renderVisible &&
+ ol.object.isEmpty(this.attributionElementRenderedVisible_)) {
+ this.element.classList.add('ol-logo-only');
+ } else {
+ this.element.classList.remove('ol-logo-only');
+ }
+
+ this.insertLogos_(frameState);
+
+};
+
+
+/**
+ * @param {?olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.control.Attribution.prototype.insertLogos_ = function(frameState) {
+
+ var logo;
+ var logos = frameState.logos;
+ var logoElements = this.logoElements_;
+
+ for (logo in logoElements) {
+ if (!(logo in logos)) {
+ ol.dom.removeNode(logoElements[logo]);
+ delete logoElements[logo];
+ }
+ }
+
+ var image, logoElement, logoKey;
+ for (logoKey in logos) {
+ var logoValue = logos[logoKey];
+ if (logoValue instanceof HTMLElement) {
+ this.logoLi_.appendChild(logoValue);
+ logoElements[logoKey] = logoValue;
+ }
+ if (!(logoKey in logoElements)) {
+ image = new Image();
+ image.src = logoKey;
+ if (logoValue === '') {
+ logoElement = image;
+ } else {
+ logoElement = document.createElement('a');
+ logoElement.href = logoValue;
+ logoElement.appendChild(image);
+ }
+ this.logoLi_.appendChild(logoElement);
+ logoElements[logoKey] = logoElement;
+ }
+ }
+
+ this.logoLi_.style.display = !ol.object.isEmpty(logos) ? '' : 'none';
+
+};
+
+
+/**
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.Attribution.prototype.handleClick_ = function(event) {
+ event.preventDefault();
+ this.handleToggle_();
+};
+
+
+/**
+ * @private
+ */
+ol.control.Attribution.prototype.handleToggle_ = function() {
+ this.element.classList.toggle('ol-collapsed');
+ if (this.collapsed_) {
+ ol.dom.replaceNode(this.collapseLabel_, this.label_);
+ } else {
+ ol.dom.replaceNode(this.label_, this.collapseLabel_);
+ }
+ this.collapsed_ = !this.collapsed_;
+};
+
+
+/**
+ * Return `true` if the attribution is collapsible, `false` otherwise.
+ * @return {boolean} True if the widget is collapsible.
+ * @api stable
+ */
+ol.control.Attribution.prototype.getCollapsible = function() {
+ return this.collapsible_;
+};
+
+
+/**
+ * Set whether the attribution should be collapsible.
+ * @param {boolean} collapsible True if the widget is collapsible.
+ * @api stable
+ */
+ol.control.Attribution.prototype.setCollapsible = function(collapsible) {
+ if (this.collapsible_ === collapsible) {
+ return;
+ }
+ this.collapsible_ = collapsible;
+ this.element.classList.toggle('ol-uncollapsible');
+ if (!collapsible && this.collapsed_) {
+ this.handleToggle_();
+ }
+};
+
+
+/**
+ * Collapse or expand the attribution according to the passed parameter. Will
+ * not do anything if the attribution isn't collapsible or if the current
+ * collapsed state is already the one requested.
+ * @param {boolean} collapsed True if the widget is collapsed.
+ * @api stable
+ */
+ol.control.Attribution.prototype.setCollapsed = function(collapsed) {
+ if (!this.collapsible_ || this.collapsed_ === collapsed) {
+ return;
+ }
+ this.handleToggle_();
+};
+
+
+/**
+ * Return `true` when the attribution is currently collapsed or `false`
+ * otherwise.
+ * @return {boolean} True if the widget is collapsed.
+ * @api stable
+ */
+ol.control.Attribution.prototype.getCollapsed = function() {
+ return this.collapsed_;
+};
+
+goog.provide('ol.control.Rotate');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.animation');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+goog.require('ol.easing');
+
+
+/**
+ * @classdesc
+ * A button control to reset rotation to 0.
+ * To style this control use css selector `.ol-rotate`. A `.ol-hidden` css
+ * selector is added to the button when the rotation is 0.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.RotateOptions=} opt_options Rotate options.
+ * @api stable
+ */
+ol.control.Rotate = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var className = options.className !== undefined ? options.className : 'ol-rotate';
+
+ var label = options.label !== undefined ? options.label : '\u21E7';
+
+ /**
+ * @type {Element}
+ * @private
+ */
+ this.label_ = null;
+
+ if (typeof label === 'string') {
+ this.label_ = document.createElement('span');
+ this.label_.className = 'ol-compass';
+ this.label_.textContent = label;
+ } else {
+ this.label_ = label;
+ this.label_.classList.add('ol-compass');
+ }
+
+ var tipLabel = options.tipLabel ? options.tipLabel : 'Reset rotation';
+
+ var button = document.createElement('button');
+ button.className = className + '-reset';
+ button.setAttribute('type', 'button');
+ button.title = tipLabel;
+ button.appendChild(this.label_);
+
+ ol.events.listen(button, ol.events.EventType.CLICK,
+ ol.control.Rotate.prototype.handleClick_, this);
+
+ var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
+ ol.css.CLASS_CONTROL;
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(button);
+
+ var render = options.render ? options.render : ol.control.Rotate.render;
+
+ this.callResetNorth_ = options.resetNorth ? options.resetNorth : undefined;
+
+ ol.control.Control.call(this, {
+ element: element,
+ render: render,
+ target: options.target
+ });
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.autoHide_ = options.autoHide !== undefined ? options.autoHide : true;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.rotation_ = undefined;
+
+ if (this.autoHide_) {
+ this.element.classList.add(ol.css.CLASS_HIDDEN);
+ }
+
+};
+ol.inherits(ol.control.Rotate, ol.control.Control);
+
+
+/**
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.Rotate.prototype.handleClick_ = function(event) {
+ event.preventDefault();
+ if (this.callResetNorth_ !== undefined) {
+ this.callResetNorth_();
+ } else {
+ this.resetNorth_();
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.control.Rotate.prototype.resetNorth_ = function() {
+ var map = this.getMap();
+ var view = map.getView();
+ if (!view) {
+ // the map does not have a view, so we can't act
+ // upon it
+ return;
+ }
+ var currentRotation = view.getRotation();
+ if (currentRotation !== undefined) {
+ if (this.duration_ > 0) {
+ currentRotation = currentRotation % (2 * Math.PI);
+ if (currentRotation < -Math.PI) {
+ currentRotation += 2 * Math.PI;
+ }
+ if (currentRotation > Math.PI) {
+ currentRotation -= 2 * Math.PI;
+ }
+ map.beforeRender(ol.animation.rotate({
+ rotation: currentRotation,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+ }
+ view.setRotation(0);
+ }
+};
+
+
+/**
+ * Update the rotate control element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.Rotate}
+ * @api
+ */
+ol.control.Rotate.render = function(mapEvent) {
+ var frameState = mapEvent.frameState;
+ if (!frameState) {
+ return;
+ }
+ var rotation = frameState.viewState.rotation;
+ if (rotation != this.rotation_) {
+ var transform = 'rotate(' + rotation + 'rad)';
+ if (this.autoHide_) {
+ var contains = this.element.classList.contains(ol.css.CLASS_HIDDEN);
+ if (!contains && rotation === 0) {
+ this.element.classList.add(ol.css.CLASS_HIDDEN);
+ } else if (contains && rotation !== 0) {
+ this.element.classList.remove(ol.css.CLASS_HIDDEN);
+ }
+ }
+ this.label_.style.msTransform = transform;
+ this.label_.style.webkitTransform = transform;
+ this.label_.style.transform = transform;
+ }
+ this.rotation_ = rotation;
+};
+
+goog.provide('ol.control.Zoom');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.animation');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+goog.require('ol.easing');
+
+
+/**
+ * @classdesc
+ * A control with 2 buttons, one for zoom in and one for zoom out.
+ * This control is one of the default controls of a map. To style this control
+ * use css selectors `.ol-zoom-in` and `.ol-zoom-out`.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.ZoomOptions=} opt_options Zoom options.
+ * @api stable
+ */
+ol.control.Zoom = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var className = options.className !== undefined ? options.className : 'ol-zoom';
+
+ var delta = options.delta !== undefined ? options.delta : 1;
+
+ var zoomInLabel = options.zoomInLabel !== undefined ? options.zoomInLabel : '+';
+ var zoomOutLabel = options.zoomOutLabel !== undefined ? options.zoomOutLabel : '\u2212';
+
+ var zoomInTipLabel = options.zoomInTipLabel !== undefined ?
+ options.zoomInTipLabel : 'Zoom in';
+ var zoomOutTipLabel = options.zoomOutTipLabel !== undefined ?
+ options.zoomOutTipLabel : 'Zoom out';
+
+ var inElement = document.createElement('button');
+ inElement.className = className + '-in';
+ inElement.setAttribute('type', 'button');
+ inElement.title = zoomInTipLabel;
+ inElement.appendChild(
+ typeof zoomInLabel === 'string' ? document.createTextNode(zoomInLabel) : zoomInLabel
+ );
+
+ ol.events.listen(inElement, ol.events.EventType.CLICK,
+ ol.control.Zoom.prototype.handleClick_.bind(this, delta));
+
+ var outElement = document.createElement('button');
+ outElement.className = className + '-out';
+ outElement.setAttribute('type', 'button');
+ outElement.title = zoomOutTipLabel;
+ outElement.appendChild(
+ typeof zoomOutLabel === 'string' ? document.createTextNode(zoomOutLabel) : zoomOutLabel
+ );
+
+ ol.events.listen(outElement, ol.events.EventType.CLICK,
+ ol.control.Zoom.prototype.handleClick_.bind(this, -delta));
+
+ var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
+ ol.css.CLASS_CONTROL;
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(inElement);
+ element.appendChild(outElement);
+
+ ol.control.Control.call(this, {
+ element: element,
+ target: options.target
+ });
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+
+};
+ol.inherits(ol.control.Zoom, ol.control.Control);
+
+
+/**
+ * @param {number} delta Zoom delta.
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.Zoom.prototype.handleClick_ = function(delta, event) {
+ event.preventDefault();
+ this.zoomByDelta_(delta);
+};
+
+
+/**
+ * @param {number} delta Zoom delta.
+ * @private
+ */
+ol.control.Zoom.prototype.zoomByDelta_ = function(delta) {
+ var map = this.getMap();
+ var view = map.getView();
+ if (!view) {
+ // the map does not have a view, so we can't act
+ // upon it
+ return;
+ }
+ var currentResolution = view.getResolution();
+ if (currentResolution) {
+ if (this.duration_ > 0) {
+ map.beforeRender(ol.animation.zoom({
+ resolution: currentResolution,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+ }
+ var newResolution = view.constrainResolution(currentResolution, delta);
+ view.setResolution(newResolution);
+ }
+};
+
+goog.provide('ol.control');
+
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.control.Attribution');
+goog.require('ol.control.Rotate');
+goog.require('ol.control.Zoom');
+
+
+/**
+ * Set of controls included in maps by default. Unless configured otherwise,
+ * this returns a collection containing an instance of each of the following
+ * controls:
+ * * {@link ol.control.Zoom}
+ * * {@link ol.control.Rotate}
+ * * {@link ol.control.Attribution}
+ *
+ * @param {olx.control.DefaultsOptions=} opt_options Defaults options.
+ * @return {ol.Collection.<ol.control.Control>} Controls.
+ * @api stable
+ */
+ol.control.defaults = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var controls = new ol.Collection();
+
+ var zoomControl = options.zoom !== undefined ? options.zoom : true;
+ if (zoomControl) {
+ controls.push(new ol.control.Zoom(options.zoomOptions));
+ }
+
+ var rotateControl = options.rotate !== undefined ? options.rotate : true;
+ if (rotateControl) {
+ controls.push(new ol.control.Rotate(options.rotateOptions));
+ }
+
+ var attributionControl = options.attribution !== undefined ?
+ options.attribution : true;
+ if (attributionControl) {
+ controls.push(new ol.control.Attribution(options.attributionOptions));
+ }
+
+ return controls;
+
+};
+
+goog.provide('ol.control.FullScreen');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.control.Control');
+goog.require('ol.dom');
+goog.require('ol.css');
+
+
+/**
+ * @classdesc
+ * Provides a button that when clicked fills up the full screen with the map.
+ * The full screen source element is by default the element containing the map viewport unless
+ * overriden by providing the `source` option. In which case, the dom
+ * element introduced using this parameter will be displayed in full screen.
+ *
+ * When in full screen mode, a close button is shown to exit full screen mode.
+ * The [Fullscreen API](http://www.w3.org/TR/fullscreen/) is used to
+ * toggle the map in full screen mode.
+ *
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.FullScreenOptions=} opt_options Options.
+ * @api stable
+ */
+ol.control.FullScreen = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.cssClassName_ = options.className !== undefined ? options.className :
+ 'ol-full-screen';
+
+ var label = options.label !== undefined ? options.label : '\u2922';
+
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.labelNode_ = typeof label === 'string' ?
+ document.createTextNode(label) : label;
+
+ var labelActive = options.labelActive !== undefined ? options.labelActive : '\u00d7';
+
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.labelActiveNode_ = typeof labelActive === 'string' ?
+ document.createTextNode(labelActive) : labelActive;
+
+ var tipLabel = options.tipLabel ? options.tipLabel : 'Toggle full-screen';
+ var button = document.createElement('button');
+ button.className = this.cssClassName_ + '-' + ol.control.FullScreen.isFullScreen();
+ button.setAttribute('type', 'button');
+ button.title = tipLabel;
+ button.appendChild(this.labelNode_);
+
+ ol.events.listen(button, ol.events.EventType.CLICK,
+ this.handleClick_, this);
+
+ var cssClasses = this.cssClassName_ + ' ' + ol.css.CLASS_UNSELECTABLE +
+ ' ' + ol.css.CLASS_CONTROL + ' ' +
+ (!ol.control.FullScreen.isFullScreenSupported() ? ol.css.CLASS_UNSUPPORTED : '');
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(button);
+
+ ol.control.Control.call(this, {
+ element: element,
+ target: options.target
+ });
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.keys_ = options.keys !== undefined ? options.keys : false;
+
+ /**
+ * @private
+ * @type {Element|string|undefined}
+ */
+ this.source_ = options.source;
+
+};
+ol.inherits(ol.control.FullScreen, ol.control.Control);
+
+
+/**
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.FullScreen.prototype.handleClick_ = function(event) {
+ event.preventDefault();
+ this.handleFullScreen_();
+};
+
+
+/**
+ * @private
+ */
+ol.control.FullScreen.prototype.handleFullScreen_ = function() {
+ if (!ol.control.FullScreen.isFullScreenSupported()) {
+ return;
+ }
+ var map = this.getMap();
+ if (!map) {
+ return;
+ }
+ if (ol.control.FullScreen.isFullScreen()) {
+ ol.control.FullScreen.exitFullScreen();
+ } else {
+ var element;
+ if (this.source_) {
+ element = typeof this.source_ === 'string' ?
+ document.getElementById(this.source_) :
+ this.source_;
+ } else {
+ element = map.getTargetElement();
+ }
+ goog.asserts.assert(element, 'element should be defined');
+ if (this.keys_) {
+ ol.control.FullScreen.requestFullScreenWithKeys(element);
+
+ } else {
+ ol.control.FullScreen.requestFullScreen(element);
+ }
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.control.FullScreen.prototype.handleFullScreenChange_ = function() {
+ var button = this.element.firstElementChild;
+ var map = this.getMap();
+ if (ol.control.FullScreen.isFullScreen()) {
+ button.className = this.cssClassName_ + '-true';
+ ol.dom.replaceNode(this.labelActiveNode_, this.labelNode_);
+ } else {
+ button.className = this.cssClassName_ + '-false';
+ ol.dom.replaceNode(this.labelNode_, this.labelActiveNode_);
+ }
+ if (map) {
+ map.updateSize();
+ }
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.control.FullScreen.prototype.setMap = function(map) {
+ ol.control.Control.prototype.setMap.call(this, map);
+ if (map) {
+ this.listenerKeys.push(ol.events.listen(ol.global.document,
+ ol.control.FullScreen.getChangeType_(),
+ this.handleFullScreenChange_, this)
+ );
+ }
+};
+
+/**
+ * @return {boolean} Fullscreen is supported by the current platform.
+ */
+ol.control.FullScreen.isFullScreenSupported = function() {
+ var body = document.body;
+ return !!(
+ body.webkitRequestFullscreen ||
+ (body.mozRequestFullScreen && document.mozFullScreenEnabled) ||
+ (body.msRequestFullscreen && document.msFullscreenEnabled) ||
+ (body.requestFullscreen && document.fullscreenEnabled)
+ );
+};
+
+/**
+ * @return {boolean} Element is currently in fullscreen.
+ */
+ol.control.FullScreen.isFullScreen = function() {
+ return !!(
+ document.webkitIsFullScreen || document.mozFullScreen ||
+ document.msFullscreenElement || document.fullscreenElement
+ );
+};
+
+/**
+ * Request to fullscreen an element.
+ * @param {Node} element Element to request fullscreen
+ */
+ol.control.FullScreen.requestFullScreen = function(element) {
+ if (element.requestFullscreen) {
+ element.requestFullscreen();
+ } else if (element.msRequestFullscreen) {
+ element.msRequestFullscreen();
+ } else if (element.mozRequestFullScreen) {
+ element.mozRequestFullScreen();
+ } else if (element.webkitRequestFullscreen) {
+ element.webkitRequestFullscreen();
+ }
+};
+
+/**
+ * Request to fullscreen an element with keyboard input.
+ * @param {Node} element Element to request fullscreen
+ */
+ol.control.FullScreen.requestFullScreenWithKeys = function(element) {
+ if (element.mozRequestFullScreenWithKeys) {
+ element.mozRequestFullScreenWithKeys();
+ } else if (element.webkitRequestFullscreen) {
+ element.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
+ } else {
+ ol.control.FullScreen.requestFullScreen(element);
+ }
+};
+
+/**
+ * Exit fullscreen.
+ */
+ol.control.FullScreen.exitFullScreen = function() {
+ if (document.exitFullscreen) {
+ document.exitFullscreen();
+ } else if (document.msExitFullscreen) {
+ document.msExitFullscreen();
+ } else if (document.mozCancelFullScreen) {
+ document.mozCancelFullScreen();
+ } else if (document.webkitExitFullscreen) {
+ document.webkitExitFullscreen();
+ }
+};
+
+/**
+ * @return {string} Change type.
+ * @private
+ */
+ol.control.FullScreen.getChangeType_ = (function() {
+ var changeType;
+ return function() {
+ if (!changeType) {
+ var body = document.body;
+ if (body.webkitRequestFullscreen) {
+ changeType = 'webkitfullscreenchange';
+ } else if (body.mozRequestFullScreen) {
+ changeType = 'mozfullscreenchange';
+ } else if (body.msRequestFullscreen) {
+ changeType = 'MSFullscreenChange';
+ } else if (body.requestFullscreen) {
+ changeType = 'fullscreenchange';
+ }
+ }
+ return changeType;
+ };
+})();
+
+// FIXME should listen on appropriate pane, once it is defined
+
+goog.provide('ol.control.MousePosition');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.Object');
+goog.require('ol.control.Control');
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+
+
+/**
+ * @enum {string}
+ */
+ol.control.MousePositionProperty = {
+ PROJECTION: 'projection',
+ COORDINATE_FORMAT: 'coordinateFormat'
+};
+
+
+/**
+ * @classdesc
+ * A control to show the 2D coordinates of the mouse cursor. By default, these
+ * are in the view projection, but can be in any supported projection.
+ * By default the control is shown in the top right corner of the map, but this
+ * can be changed by using the css selector `.ol-mouse-position`.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.MousePositionOptions=} opt_options Mouse position
+ * options.
+ * @api stable
+ */
+ol.control.MousePosition = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var element = document.createElement('DIV');
+ element.className = options.className !== undefined ? options.className : 'ol-mouse-position';
+
+ var render = options.render ?
+ options.render : ol.control.MousePosition.render;
+
+ ol.control.Control.call(this, {
+ element: element,
+ render: render,
+ target: options.target
+ });
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.control.MousePositionProperty.PROJECTION),
+ this.handleProjectionChanged_, this);
+
+ if (options.coordinateFormat) {
+ this.setCoordinateFormat(options.coordinateFormat);
+ }
+ if (options.projection) {
+ this.setProjection(ol.proj.get(options.projection));
+ }
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.undefinedHTML_ = options.undefinedHTML !== undefined ? options.undefinedHTML : '';
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.renderedHTML_ = element.innerHTML;
+
+ /**
+ * @private
+ * @type {ol.proj.Projection}
+ */
+ this.mapProjection_ = null;
+
+ /**
+ * @private
+ * @type {?ol.TransformFunction}
+ */
+ this.transform_ = null;
+
+ /**
+ * @private
+ * @type {ol.Pixel}
+ */
+ this.lastMouseMovePixel_ = null;
+
+};
+ol.inherits(ol.control.MousePosition, ol.control.Control);
+
+
+/**
+ * Update the mouseposition element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.MousePosition}
+ * @api
+ */
+ol.control.MousePosition.render = function(mapEvent) {
+ var frameState = mapEvent.frameState;
+ if (!frameState) {
+ this.mapProjection_ = null;
+ } else {
+ if (this.mapProjection_ != frameState.viewState.projection) {
+ this.mapProjection_ = frameState.viewState.projection;
+ this.transform_ = null;
+ }
+ }
+ this.updateHTML_(this.lastMouseMovePixel_);
+};
+
+
+/**
+ * @private
+ */
+ol.control.MousePosition.prototype.handleProjectionChanged_ = function() {
+ this.transform_ = null;
+};
+
+
+/**
+ * Return the coordinate format type used to render the current position or
+ * undefined.
+ * @return {ol.CoordinateFormatType|undefined} The format to render the current
+ * position in.
+ * @observable
+ * @api stable
+ */
+ol.control.MousePosition.prototype.getCoordinateFormat = function() {
+ return /** @type {ol.CoordinateFormatType|undefined} */ (
+ this.get(ol.control.MousePositionProperty.COORDINATE_FORMAT));
+};
+
+
+/**
+ * Return the projection that is used to report the mouse position.
+ * @return {ol.proj.Projection|undefined} The projection to report mouse
+ * position in.
+ * @observable
+ * @api stable
+ */
+ol.control.MousePosition.prototype.getProjection = function() {
+ return /** @type {ol.proj.Projection|undefined} */ (
+ this.get(ol.control.MousePositionProperty.PROJECTION));
+};
+
+
+/**
+ * @param {Event} event Browser event.
+ * @protected
+ */
+ol.control.MousePosition.prototype.handleMouseMove = function(event) {
+ var map = this.getMap();
+ this.lastMouseMovePixel_ = map.getEventPixel(event);
+ this.updateHTML_(this.lastMouseMovePixel_);
+};
+
+
+/**
+ * @param {Event} event Browser event.
+ * @protected
+ */
+ol.control.MousePosition.prototype.handleMouseOut = function(event) {
+ this.updateHTML_(null);
+ this.lastMouseMovePixel_ = null;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.control.MousePosition.prototype.setMap = function(map) {
+ ol.control.Control.prototype.setMap.call(this, map);
+ if (map) {
+ var viewport = map.getViewport();
+ this.listenerKeys.push(
+ ol.events.listen(viewport, ol.events.EventType.MOUSEMOVE,
+ this.handleMouseMove, this),
+ ol.events.listen(viewport, ol.events.EventType.MOUSEOUT,
+ this.handleMouseOut, this)
+ );
+ }
+};
+
+
+/**
+ * Set the coordinate format type used to render the current position.
+ * @param {ol.CoordinateFormatType} format The format to render the current
+ * position in.
+ * @observable
+ * @api stable
+ */
+ol.control.MousePosition.prototype.setCoordinateFormat = function(format) {
+ this.set(ol.control.MousePositionProperty.COORDINATE_FORMAT, format);
+};
+
+
+/**
+ * Set the projection that is used to report the mouse position.
+ * @param {ol.proj.Projection} projection The projection to report mouse
+ * position in.
+ * @observable
+ * @api stable
+ */
+ol.control.MousePosition.prototype.setProjection = function(projection) {
+ this.set(ol.control.MousePositionProperty.PROJECTION, projection);
+};
+
+
+/**
+ * @param {?ol.Pixel} pixel Pixel.
+ * @private
+ */
+ol.control.MousePosition.prototype.updateHTML_ = function(pixel) {
+ var html = this.undefinedHTML_;
+ if (pixel && this.mapProjection_) {
+ if (!this.transform_) {
+ var projection = this.getProjection();
+ if (projection) {
+ this.transform_ = ol.proj.getTransformFromProjections(
+ this.mapProjection_, projection);
+ } else {
+ this.transform_ = ol.proj.identityTransform;
+ }
+ }
+ var map = this.getMap();
+ var coordinate = map.getCoordinateFromPixel(pixel);
+ if (coordinate) {
+ this.transform_(coordinate, coordinate);
+ var coordinateFormat = this.getCoordinateFormat();
+ if (coordinateFormat) {
+ html = coordinateFormat(coordinate);
+ } else {
+ html = coordinate.toString();
+ }
+ }
+ }
+ if (!this.renderedHTML_ || html != this.renderedHTML_) {
+ this.element.innerHTML = html;
+ this.renderedHTML_ = html;
+ }
+};
+
+// Copyright 2010 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview A global registry for entry points into a program,
+ * so that they can be instrumented. Each module should register their
+ * entry points with this registry. Designed to be compiled out
+ * if no instrumentation is requested.
+ *
+ * Entry points may be registered before or after a call to
+ * goog.debug.entryPointRegistry.monitorAll. If an entry point is registered
+ * later, the existing monitor will instrument the new entry point.
+ *
+ * @author nicksantos@google.com (Nick Santos)
+ */
+
+goog.provide('goog.debug.EntryPointMonitor');
+goog.provide('goog.debug.entryPointRegistry');
+
+goog.require('goog.asserts');
+
+
+
+/**
+ * @interface
+ */
+goog.debug.EntryPointMonitor = function() {};
+
+
+/**
+ * Instruments a function.
+ *
+ * @param {!Function} fn A function to instrument.
+ * @return {!Function} The instrumented function.
+ */
+goog.debug.EntryPointMonitor.prototype.wrap;
+
+
+/**
+ * Try to remove an instrumentation wrapper created by this monitor.
+ * If the function passed to unwrap is not a wrapper created by this
+ * monitor, then we will do nothing.
+ *
+ * Notice that some wrappers may not be unwrappable. For example, if other
+ * monitors have applied their own wrappers, then it will be impossible to
+ * unwrap them because their wrappers will have captured our wrapper.
+ *
+ * So it is important that entry points are unwrapped in the reverse
+ * order that they were wrapped.
+ *
+ * @param {!Function} fn A function to unwrap.
+ * @return {!Function} The unwrapped function, or {@code fn} if it was not
+ * a wrapped function created by this monitor.
+ */
+goog.debug.EntryPointMonitor.prototype.unwrap;
+
+
+/**
+ * An array of entry point callbacks.
+ * @type {!Array<function(!Function)>}
+ * @private
+ */
+goog.debug.entryPointRegistry.refList_ = [];
+
+
+/**
+ * Monitors that should wrap all the entry points.
+ * @type {!Array<!goog.debug.EntryPointMonitor>}
+ * @private
+ */
+goog.debug.entryPointRegistry.monitors_ = [];
+
+
+/**
+ * Whether goog.debug.entryPointRegistry.monitorAll has ever been called.
+ * Checking this allows the compiler to optimize out the registrations.
+ * @type {boolean}
+ * @private
+ */
+goog.debug.entryPointRegistry.monitorsMayExist_ = false;
+
+
+/**
+ * Register an entry point with this module.
+ *
+ * The entry point will be instrumented when a monitor is passed to
+ * goog.debug.entryPointRegistry.monitorAll. If this has already occurred, the
+ * entry point is instrumented immediately.
+ *
+ * @param {function(!Function)} callback A callback function which is called
+ * with a transforming function to instrument the entry point. The callback
+ * is responsible for wrapping the relevant entry point with the
+ * transforming function.
+ */
+goog.debug.entryPointRegistry.register = function(callback) {
+ // Don't use push(), so that this can be compiled out.
+ goog.debug.entryPointRegistry
+ .refList_[goog.debug.entryPointRegistry.refList_.length] = callback;
+ // If no one calls monitorAll, this can be compiled out.
+ if (goog.debug.entryPointRegistry.monitorsMayExist_) {
+ var monitors = goog.debug.entryPointRegistry.monitors_;
+ for (var i = 0; i < monitors.length; i++) {
+ callback(goog.bind(monitors[i].wrap, monitors[i]));
+ }
+ }
+};
+
+
+/**
+ * Configures a monitor to wrap all entry points.
+ *
+ * Entry points that have already been registered are immediately wrapped by
+ * the monitor. When an entry point is registered in the future, it will also
+ * be wrapped by the monitor when it is registered.
+ *
+ * @param {!goog.debug.EntryPointMonitor} monitor An entry point monitor.
+ */
+goog.debug.entryPointRegistry.monitorAll = function(monitor) {
+ goog.debug.entryPointRegistry.monitorsMayExist_ = true;
+ var transformer = goog.bind(monitor.wrap, monitor);
+ for (var i = 0; i < goog.debug.entryPointRegistry.refList_.length; i++) {
+ goog.debug.entryPointRegistry.refList_[i](transformer);
+ }
+ goog.debug.entryPointRegistry.monitors_.push(monitor);
+};
+
+
+/**
+ * Try to unmonitor all the entry points that have already been registered. If
+ * an entry point is registered in the future, it will not be wrapped by the
+ * monitor when it is registered. Note that this may fail if the entry points
+ * have additional wrapping.
+ *
+ * @param {!goog.debug.EntryPointMonitor} monitor The last monitor to wrap
+ * the entry points.
+ * @throws {Error} If the monitor is not the most recently configured monitor.
+ */
+goog.debug.entryPointRegistry.unmonitorAllIfPossible = function(monitor) {
+ var monitors = goog.debug.entryPointRegistry.monitors_;
+ goog.asserts.assert(
+ monitor == monitors[monitors.length - 1],
+ 'Only the most recent monitor can be unwrapped.');
+ var transformer = goog.bind(monitor.unwrap, monitor);
+ for (var i = 0; i < goog.debug.entryPointRegistry.refList_.length; i++) {
+ goog.debug.entryPointRegistry.refList_[i](transformer);
+ }
+ monitors.length--;
+};
+
+// Copyright 2007 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Defines the goog.dom.TagName enum. This enumerates
+ * all HTML tag names specified in either the the W3C HTML 4.01 index of
+ * elements or the HTML5 draft specification.
+ *
+ * References:
+ * http://www.w3.org/TR/html401/index/elements.html
+ * http://dev.w3.org/html5/spec/section-index.html
+ *
+ */
+goog.provide('goog.dom.TagName');
+
+
+/**
+ * Enum of all html tag names specified by the W3C HTML4.01 and HTML5
+ * specifications.
+ * @enum {string}
+ */
+goog.dom.TagName = {
+ A: 'A',
+ ABBR: 'ABBR',
+ ACRONYM: 'ACRONYM',
+ ADDRESS: 'ADDRESS',
+ APPLET: 'APPLET',
+ AREA: 'AREA',
+ ARTICLE: 'ARTICLE',
+ ASIDE: 'ASIDE',
+ AUDIO: 'AUDIO',
+ B: 'B',
+ BASE: 'BASE',
+ BASEFONT: 'BASEFONT',
+ BDI: 'BDI',
+ BDO: 'BDO',
+ BIG: 'BIG',
+ BLOCKQUOTE: 'BLOCKQUOTE',
+ BODY: 'BODY',
+ BR: 'BR',
+ BUTTON: 'BUTTON',
+ CANVAS: 'CANVAS',
+ CAPTION: 'CAPTION',
+ CENTER: 'CENTER',
+ CITE: 'CITE',
+ CODE: 'CODE',
+ COL: 'COL',
+ COLGROUP: 'COLGROUP',
+ COMMAND: 'COMMAND',
+ DATA: 'DATA',
+ DATALIST: 'DATALIST',
+ DD: 'DD',
+ DEL: 'DEL',
+ DETAILS: 'DETAILS',
+ DFN: 'DFN',
+ DIALOG: 'DIALOG',
+ DIR: 'DIR',
+ DIV: 'DIV',
+ DL: 'DL',
+ DT: 'DT',
+ EM: 'EM',
+ EMBED: 'EMBED',
+ FIELDSET: 'FIELDSET',
+ FIGCAPTION: 'FIGCAPTION',
+ FIGURE: 'FIGURE',
+ FONT: 'FONT',
+ FOOTER: 'FOOTER',
+ FORM: 'FORM',
+ FRAME: 'FRAME',
+ FRAMESET: 'FRAMESET',
+ H1: 'H1',
+ H2: 'H2',
+ H3: 'H3',
+ H4: 'H4',
+ H5: 'H5',
+ H6: 'H6',
+ HEAD: 'HEAD',
+ HEADER: 'HEADER',
+ HGROUP: 'HGROUP',
+ HR: 'HR',
+ HTML: 'HTML',
+ I: 'I',
+ IFRAME: 'IFRAME',
+ IMG: 'IMG',
+ INPUT: 'INPUT',
+ INS: 'INS',
+ ISINDEX: 'ISINDEX',
+ KBD: 'KBD',
+ KEYGEN: 'KEYGEN',
+ LABEL: 'LABEL',
+ LEGEND: 'LEGEND',
+ LI: 'LI',
+ LINK: 'LINK',
+ MAP: 'MAP',
+ MARK: 'MARK',
+ MATH: 'MATH',
+ MENU: 'MENU',
+ META: 'META',
+ METER: 'METER',
+ NAV: 'NAV',
+ NOFRAMES: 'NOFRAMES',
+ NOSCRIPT: 'NOSCRIPT',
+ OBJECT: 'OBJECT',
+ OL: 'OL',
+ OPTGROUP: 'OPTGROUP',
+ OPTION: 'OPTION',
+ OUTPUT: 'OUTPUT',
+ P: 'P',
+ PARAM: 'PARAM',
+ PRE: 'PRE',
+ PROGRESS: 'PROGRESS',
+ Q: 'Q',
+ RP: 'RP',
+ RT: 'RT',
+ RUBY: 'RUBY',
+ S: 'S',
+ SAMP: 'SAMP',
+ SCRIPT: 'SCRIPT',
+ SECTION: 'SECTION',
+ SELECT: 'SELECT',
+ SMALL: 'SMALL',
+ SOURCE: 'SOURCE',
+ SPAN: 'SPAN',
+ STRIKE: 'STRIKE',
+ STRONG: 'STRONG',
+ STYLE: 'STYLE',
+ SUB: 'SUB',
+ SUMMARY: 'SUMMARY',
+ SUP: 'SUP',
+ SVG: 'SVG',
+ TABLE: 'TABLE',
+ TBODY: 'TBODY',
+ TD: 'TD',
+ TEMPLATE: 'TEMPLATE',
+ TEXTAREA: 'TEXTAREA',
+ TFOOT: 'TFOOT',
+ TH: 'TH',
+ THEAD: 'THEAD',
+ TIME: 'TIME',
+ TITLE: 'TITLE',
+ TR: 'TR',
+ TRACK: 'TRACK',
+ TT: 'TT',
+ U: 'U',
+ UL: 'UL',
+ VAR: 'VAR',
+ VIDEO: 'VIDEO',
+ WBR: 'WBR'
+};
+
+// Copyright 2008 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Utilities for creating functions. Loosely inspired by the
+ * java classes: http://goo.gl/GM0Hmu and http://goo.gl/6k7nI8.
+ *
+ * @author nicksantos@google.com (Nick Santos)
+ */
+
+
+goog.provide('goog.functions');
+
+
+/**
+ * Creates a function that always returns the same value.
+ * @param {T} retValue The value to return.
+ * @return {function():T} The new function.
+ * @template T
+ */
+goog.functions.constant = function(retValue) {
+ return function() { return retValue; };
+};
+
+
+/**
+ * Always returns false.
+ * @type {function(...): boolean}
+ */
+goog.functions.FALSE = goog.functions.constant(false);
+
+
+/**
+ * Always returns true.
+ * @type {function(...): boolean}
+ */
+goog.functions.TRUE = goog.functions.constant(true);
+
+
+/**
+ * Always returns NULL.
+ * @type {function(...): null}
+ */
+goog.functions.NULL = goog.functions.constant(null);
+
+
+/**
+ * A simple function that returns the first argument of whatever is passed
+ * into it.
+ * @param {T=} opt_returnValue The single value that will be returned.
+ * @param {...*} var_args Optional trailing arguments. These are ignored.
+ * @return {T} The first argument passed in, or undefined if nothing was passed.
+ * @template T
+ */
+goog.functions.identity = function(opt_returnValue, var_args) {
+ return opt_returnValue;
+};
+
+
+/**
+ * Creates a function that always throws an error with the given message.
+ * @param {string} message The error message.
+ * @return {!Function} The error-throwing function.
+ */
+goog.functions.error = function(message) {
+ return function() { throw Error(message); };
+};
+
+
+/**
+ * Creates a function that throws the given object.
+ * @param {*} err An object to be thrown.
+ * @return {!Function} The error-throwing function.
+ */
+goog.functions.fail = function(err) {
+ return function() { throw err; };
+};
+
+
+/**
+ * Given a function, create a function that keeps opt_numArgs arguments and
+ * silently discards all additional arguments.
+ * @param {Function} f The original function.
+ * @param {number=} opt_numArgs The number of arguments to keep. Defaults to 0.
+ * @return {!Function} A version of f that only keeps the first opt_numArgs
+ * arguments.
+ */
+goog.functions.lock = function(f, opt_numArgs) {
+ opt_numArgs = opt_numArgs || 0;
+ return function() {
+ return f.apply(this, Array.prototype.slice.call(arguments, 0, opt_numArgs));
+ };
+};
+
+
+/**
+ * Creates a function that returns its nth argument.
+ * @param {number} n The position of the return argument.
+ * @return {!Function} A new function.
+ */
+goog.functions.nth = function(n) {
+ return function() { return arguments[n]; };
+};
+
+
+/**
+ * Like goog.partial(), except that arguments are added after arguments to the
+ * returned function.
+ *
+ * Usage:
+ * function f(arg1, arg2, arg3, arg4) { ... }
+ * var g = goog.functions.partialRight(f, arg3, arg4);
+ * g(arg1, arg2);
+ *
+ * @param {!Function} fn A function to partially apply.
+ * @param {...*} var_args Additional arguments that are partially applied to fn
+ * at the end.
+ * @return {!Function} A partially-applied form of the function goog.partial()
+ * was invoked as a method of.
+ */
+goog.functions.partialRight = function(fn, var_args) {
+ var rightArgs = Array.prototype.slice.call(arguments, 1);
+ return function() {
+ var newArgs = Array.prototype.slice.call(arguments);
+ newArgs.push.apply(newArgs, rightArgs);
+ return fn.apply(this, newArgs);
+ };
+};
+
+
+/**
+ * Given a function, create a new function that swallows its return value
+ * and replaces it with a new one.
+ * @param {Function} f A function.
+ * @param {T} retValue A new return value.
+ * @return {function(...?):T} A new function.
+ * @template T
+ */
+goog.functions.withReturnValue = function(f, retValue) {
+ return goog.functions.sequence(f, goog.functions.constant(retValue));
+};
+
+
+/**
+ * Creates a function that returns whether its argument equals the given value.
+ *
+ * Example:
+ * var key = goog.object.findKey(obj, goog.functions.equalTo('needle'));
+ *
+ * @param {*} value The value to compare to.
+ * @param {boolean=} opt_useLooseComparison Whether to use a loose (==)
+ * comparison rather than a strict (===) one. Defaults to false.
+ * @return {function(*):boolean} The new function.
+ */
+goog.functions.equalTo = function(value, opt_useLooseComparison) {
+ return function(other) {
+ return opt_useLooseComparison ? (value == other) : (value === other);
+ };
+};
+
+
+/**
+ * Creates the composition of the functions passed in.
+ * For example, (goog.functions.compose(f, g))(a) is equivalent to f(g(a)).
+ * @param {function(...?):T} fn The final function.
+ * @param {...Function} var_args A list of functions.
+ * @return {function(...?):T} The composition of all inputs.
+ * @template T
+ */
+goog.functions.compose = function(fn, var_args) {
+ var functions = arguments;
+ var length = functions.length;
+ return function() {
+ var result;
+ if (length) {
+ result = functions[length - 1].apply(this, arguments);
+ }
+
+ for (var i = length - 2; i >= 0; i--) {
+ result = functions[i].call(this, result);
+ }
+ return result;
+ };
+};
+
+
+/**
+ * Creates a function that calls the functions passed in in sequence, and
+ * returns the value of the last function. For example,
+ * (goog.functions.sequence(f, g))(x) is equivalent to f(x),g(x).
+ * @param {...Function} var_args A list of functions.
+ * @return {!Function} A function that calls all inputs in sequence.
+ */
+goog.functions.sequence = function(var_args) {
+ var functions = arguments;
+ var length = functions.length;
+ return function() {
+ var result;
+ for (var i = 0; i < length; i++) {
+ result = functions[i].apply(this, arguments);
+ }
+ return result;
+ };
+};
+
+
+/**
+ * Creates a function that returns true if each of its components evaluates
+ * to true. The components are evaluated in order, and the evaluation will be
+ * short-circuited as soon as a function returns false.
+ * For example, (goog.functions.and(f, g))(x) is equivalent to f(x) && g(x).
+ * @param {...Function} var_args A list of functions.
+ * @return {function(...?):boolean} A function that ANDs its component
+ * functions.
+ */
+goog.functions.and = function(var_args) {
+ var functions = arguments;
+ var length = functions.length;
+ return function() {
+ for (var i = 0; i < length; i++) {
+ if (!functions[i].apply(this, arguments)) {
+ return false;
+ }
+ }
+ return true;
+ };
+};
+
+
+/**
+ * Creates a function that returns true if any of its components evaluates
+ * to true. The components are evaluated in order, and the evaluation will be
+ * short-circuited as soon as a function returns true.
+ * For example, (goog.functions.or(f, g))(x) is equivalent to f(x) || g(x).
+ * @param {...Function} var_args A list of functions.
+ * @return {function(...?):boolean} A function that ORs its component
+ * functions.
+ */
+goog.functions.or = function(var_args) {
+ var functions = arguments;
+ var length = functions.length;
+ return function() {
+ for (var i = 0; i < length; i++) {
+ if (functions[i].apply(this, arguments)) {
+ return true;
+ }
+ }
+ return false;
+ };
+};
+
+
+/**
+ * Creates a function that returns the Boolean opposite of a provided function.
+ * For example, (goog.functions.not(f))(x) is equivalent to !f(x).
+ * @param {!Function} f The original function.
+ * @return {function(...?):boolean} A function that delegates to f and returns
+ * opposite.
+ */
+goog.functions.not = function(f) {
+ return function() { return !f.apply(this, arguments); };
+};
+
+
+/**
+ * Generic factory function to construct an object given the constructor
+ * and the arguments. Intended to be bound to create object factories.
+ *
+ * Example:
+ *
+ * var factory = goog.partial(goog.functions.create, Class);
+ *
+ * @param {function(new:T, ...)} constructor The constructor for the Object.
+ * @param {...*} var_args The arguments to be passed to the constructor.
+ * @return {T} A new instance of the class given in {@code constructor}.
+ * @template T
+ */
+goog.functions.create = function(constructor, var_args) {
+ /**
+ * @constructor
+ * @final
+ */
+ var temp = function() {};
+ temp.prototype = constructor.prototype;
+
+ // obj will have constructor's prototype in its chain and
+ // 'obj instanceof constructor' will be true.
+ var obj = new temp();
+
+ // obj is initialized by constructor.
+ // arguments is only array-like so lacks shift(), but can be used with
+ // the Array prototype function.
+ constructor.apply(obj, Array.prototype.slice.call(arguments, 1));
+ return obj;
+};
+
+
+/**
+ * @define {boolean} Whether the return value cache should be used.
+ * This should only be used to disable caches when testing.
+ */
+goog.define('goog.functions.CACHE_RETURN_VALUE', true);
+
+
+/**
+ * Gives a wrapper function that caches the return value of a parameterless
+ * function when first called.
+ *
+ * When called for the first time, the given function is called and its
+ * return value is cached (thus this is only appropriate for idempotent
+ * functions). Subsequent calls will return the cached return value. This
+ * allows the evaluation of expensive functions to be delayed until first used.
+ *
+ * To cache the return values of functions with parameters, see goog.memoize.
+ *
+ * @param {!function():T} fn A function to lazily evaluate.
+ * @return {!function():T} A wrapped version the function.
+ * @template T
+ */
+goog.functions.cacheReturnValue = function(fn) {
+ var called = false;
+ var value;
+
+ return function() {
+ if (!goog.functions.CACHE_RETURN_VALUE) {
+ return fn();
+ }
+
+ if (!called) {
+ value = fn();
+ called = true;
+ }
+
+ return value;
+ };
+};
+
+
+/**
+ * Wraps a function to allow it to be called, at most, once. All
+ * additional calls are no-ops.
+ *
+ * This is particularly useful for initialization functions
+ * that should be called, at most, once.
+ *
+ * @param {function():*} f Function to call.
+ * @return {function():undefined} Wrapped function.
+ */
+goog.functions.once = function(f) {
+ // Keep a reference to the function that we null out when we're done with
+ // it -- that way, the function can be GC'd when we're done with it.
+ var inner = f;
+ return function() {
+ if (inner) {
+ var tmp = inner;
+ inner = null;
+ tmp();
+ }
+ };
+};
+
+
+/**
+ * Wraps a function to allow it to be called, at most, once for each sequence of
+ * calls fired repeatedly so long as they are fired less than a specified
+ * interval apart (in milliseconds). Whether it receives one signal or multiple,
+ * it will always wait until a full interval has elapsed since the last signal
+ * before performing the action, passing the arguments from the last call of the
+ * debouncing decorator into the decorated function.
+ *
+ * This is particularly useful for bulking up repeated user actions (e.g. only
+ * refreshing a view once a user finishes typing rather than updating with every
+ * keystroke). For more stateful debouncing with support for pausing, resuming,
+ * and canceling debounced actions, use {@code goog.async.Debouncer}.
+ *
+ * @param {function(this:SCOPE, ...?)} f Function to call.
+ * @param {number} interval Interval over which to debounce. The function will
+ * only be called after the full interval has elapsed since the last call.
+ * @param {SCOPE=} opt_scope Object in whose scope to call the function.
+ * @return {function(...?): undefined} Wrapped function.
+ * @template SCOPE
+ */
+goog.functions.debounce = function(f, interval, opt_scope) {
+ if (opt_scope) {
+ f = goog.bind(f, opt_scope);
+ }
+ var timeout = null;
+ return /** @type {function(...?)} */ (function(var_args) {
+ goog.global.clearTimeout(timeout);
+ var args = arguments;
+ timeout =
+ goog.global.setTimeout(function() { f.apply(null, args); }, interval);
+ });
+};
+
+
+/**
+ * Wraps a function to allow it to be called, at most, once per interval
+ * (specified in milliseconds). If it is called multiple times while it is
+ * waiting, it will only perform the action once at the end of the interval,
+ * passing the arguments from the last call of the throttling decorator into the
+ * decorated function.
+ *
+ * This is particularly useful for limiting repeated user requests (e.g.
+ * preventing a user from spamming a server with frequent view refreshes). For
+ * more stateful throttling with support for pausing, resuming, and canceling
+ * throttled actions, use {@code goog.async.Throttle}.
+ *
+ * @param {function(this:SCOPE, ...?)} f Function to call.
+ * @param {number} interval Interval over which to throttle. The function can
+ * only be called once per interval.
+ * @param {SCOPE=} opt_scope Object in whose scope to call the function.
+ * @return {function(...?): undefined} Wrapped function.
+ * @template SCOPE
+ */
+goog.functions.throttle = function(f, interval, opt_scope) {
+ if (opt_scope) {
+ f = goog.bind(f, opt_scope);
+ }
+ var timeout = null;
+ var shouldFire = false;
+ var args = [];
+
+ var handleTimeout = function() {
+ timeout = null;
+ if (shouldFire) {
+ shouldFire = false;
+ fire();
+ }
+ };
+
+ var fire = function() {
+ timeout = goog.global.setTimeout(handleTimeout, interval);
+ f.apply(null, args);
+ };
+
+ return /** @type {function(...?)} */ (function(var_args) {
+ args = arguments;
+ if (!timeout) {
+ fire();
+ } else {
+ shouldFire = true;
+ }
+ });
+};
+
+// Copyright 2013 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Provides a function to schedule running a function as soon
+ * as possible after the current JS execution stops and yields to the event
+ * loop.
+ *
+ */
+
+goog.provide('goog.async.nextTick');
+goog.provide('goog.async.throwException');
+
+goog.require('goog.debug.entryPointRegistry');
+goog.require('goog.dom.TagName');
+goog.require('goog.functions');
+goog.require('goog.labs.userAgent.browser');
+goog.require('goog.labs.userAgent.engine');
+
+
+/**
+ * Throw an item without interrupting the current execution context. For
+ * example, if processing a group of items in a loop, sometimes it is useful
+ * to report an error while still allowing the rest of the batch to be
+ * processed.
+ * @param {*} exception
+ */
+goog.async.throwException = function(exception) {
+ // Each throw needs to be in its own context.
+ goog.global.setTimeout(function() { throw exception; }, 0);
+};
+
+
+/**
+ * Fires the provided callbacks as soon as possible after the current JS
+ * execution context. setTimeout(…, 0) takes at least 4ms when called from
+ * within another setTimeout(…, 0) for legacy reasons.
+ *
+ * This will not schedule the callback as a microtask (i.e. a task that can
+ * preempt user input or networking callbacks). It is meant to emulate what
+ * setTimeout(_, 0) would do if it were not throttled. If you desire microtask
+ * behavior, use {@see goog.Promise} instead.
+ *
+ * @param {function(this:SCOPE)} callback Callback function to fire as soon as
+ * possible.
+ * @param {SCOPE=} opt_context Object in whose scope to call the listener.
+ * @param {boolean=} opt_useSetImmediate Avoid the IE workaround that
+ * ensures correctness at the cost of speed. See comments for details.
+ * @template SCOPE
+ */
+goog.async.nextTick = function(callback, opt_context, opt_useSetImmediate) {
+ var cb = callback;
+ if (opt_context) {
+ cb = goog.bind(callback, opt_context);
+ }
+ cb = goog.async.nextTick.wrapCallback_(cb);
+ // Note we do allow callers to also request setImmediate if they are willing
+ // to accept the possible tradeoffs of incorrectness in exchange for speed.
+ // The IE fallback of readystate change is much slower. See useSetImmediate_
+ // for details.
+ if (goog.isFunction(goog.global.setImmediate) &&
+ (opt_useSetImmediate || goog.async.nextTick.useSetImmediate_())) {
+ goog.global.setImmediate(cb);
+ return;
+ }
+
+ // Look for and cache the custom fallback version of setImmediate.
+ if (!goog.async.nextTick.setImmediate_) {
+ goog.async.nextTick.setImmediate_ =
+ goog.async.nextTick.getSetImmediateEmulator_();
+ }
+ goog.async.nextTick.setImmediate_(cb);
+};
+
+
+/**
+ * Returns whether should use setImmediate implementation currently on window.
+ *
+ * window.setImmediate was introduced and currently only supported by IE10+,
+ * but due to a bug in the implementation it is not guaranteed that
+ * setImmediate is faster than setTimeout nor that setImmediate N is before
+ * setImmediate N+1. That is why we do not use the native version if
+ * available. We do, however, call setImmediate if it is a non-native function
+ * because that indicates that it has been replaced by goog.testing.MockClock
+ * which we do want to support.
+ * See
+ * http://connect.microsoft.com/IE/feedback/details/801823/setimmediate-and-messagechannel-are-broken-in-ie10
+ *
+ * @return {boolean} Whether to use the implementation of setImmediate defined
+ * on Window.
+ * @private
+ */
+goog.async.nextTick.useSetImmediate_ = function() {
+ // Not a browser environment.
+ if (!goog.global.Window || !goog.global.Window.prototype) {
+ return true;
+ }
+
+ // MS Edge has window.setImmediate natively, but it's not on Window.prototype.
+ // Also, there's no clean way to detect if the goog.global.setImmediate has
+ // been replaced by mockClock as its replacement also shows up as "[native
+ // code]" when using toString. Therefore, just always use
+ // goog.global.setImmediate for Edge. It's unclear if it suffers the same
+ // issues as IE10/11, but based on
+ // https://dev.modern.ie/testdrive/demos/setimmediatesorting/
+ // it seems they've been working to ensure it's WAI.
+ if (goog.labs.userAgent.browser.isEdge() ||
+ goog.global.Window.prototype.setImmediate != goog.global.setImmediate) {
+ // Something redefined setImmediate in which case we decide to use it (This
+ // is so that we use the mockClock setImmediate).
+ return true;
+ }
+
+ return false;
+};
+
+
+/**
+ * Cache for the setImmediate implementation.
+ * @type {function(function())}
+ * @private
+ */
+goog.async.nextTick.setImmediate_;
+
+
+/**
+ * Determines the best possible implementation to run a function as soon as
+ * the JS event loop is idle.
+ * @return {function(function())} The "setImmediate" implementation.
+ * @private
+ */
+goog.async.nextTick.getSetImmediateEmulator_ = function() {
+ // Create a private message channel and use it to postMessage empty messages
+ // to ourselves.
+ var Channel = goog.global['MessageChannel'];
+ // If MessageChannel is not available and we are in a browser, implement
+ // an iframe based polyfill in browsers that have postMessage and
+ // document.addEventListener. The latter excludes IE8 because it has a
+ // synchronous postMessage implementation.
+ if (typeof Channel === 'undefined' && typeof window !== 'undefined' &&
+ window.postMessage && window.addEventListener &&
+ // Presto (The old pre-blink Opera engine) has problems with iframes
+ // and contentWindow.
+ !goog.labs.userAgent.engine.isPresto()) {
+ /** @constructor */
+ Channel = function() {
+ // Make an empty, invisible iframe.
+ var iframe = /** @type {!HTMLIFrameElement} */ (
+ document.createElement(goog.dom.TagName.IFRAME));
+ iframe.style.display = 'none';
+ iframe.src = '';
+ document.documentElement.appendChild(iframe);
+ var win = iframe.contentWindow;
+ var doc = win.document;
+ doc.open();
+ doc.write('');
+ doc.close();
+ // Do not post anything sensitive over this channel, as the workaround for
+ // pages with file: origin could allow that information to be modified or
+ // intercepted.
+ var message = 'callImmediate' + Math.random();
+ // The same origin policy rejects attempts to postMessage from file: urls
+ // unless the origin is '*'.
+ // TODO(b/16335441): Use '*' origin for data: and other similar protocols.
+ var origin = win.location.protocol == 'file:' ?
+ '*' :
+ win.location.protocol + '//' + win.location.host;
+ var onmessage = goog.bind(function(e) {
+ // Validate origin and message to make sure that this message was
+ // intended for us. If the origin is set to '*' (see above) only the
+ // message needs to match since, for example, '*' != 'file://'. Allowing
+ // the wildcard is ok, as we are not concerned with security here.
+ if ((origin != '*' && e.origin != origin) || e.data != message) {
+ return;
+ }
+ this['port1'].onmessage();
+ }, this);
+ win.addEventListener('message', onmessage, false);
+ this['port1'] = {};
+ this['port2'] = {
+ postMessage: function() { win.postMessage(message, origin); }
+ };
+ };
+ }
+ if (typeof Channel !== 'undefined' && (!goog.labs.userAgent.browser.isIE())) {
+ // Exclude all of IE due to
+ // http://codeforhire.com/2013/09/21/setimmediate-and-messagechannel-broken-on-internet-explorer-10/
+ // which allows starving postMessage with a busy setTimeout loop.
+ // This currently affects IE10 and IE11 which would otherwise be able
+ // to use the postMessage based fallbacks.
+ var channel = new Channel();
+ // Use a fifo linked list to call callbacks in the right order.
+ var head = {};
+ var tail = head;
+ channel['port1'].onmessage = function() {
+ if (goog.isDef(head.next)) {
+ head = head.next;
+ var cb = head.cb;
+ head.cb = null;
+ cb();
+ }
+ };
+ return function(cb) {
+ tail.next = {cb: cb};
+ tail = tail.next;
+ channel['port2'].postMessage(0);
+ };
+ }
+ // Implementation for IE6 to IE10: Script elements fire an asynchronous
+ // onreadystatechange event when inserted into the DOM.
+ if (typeof document !== 'undefined' &&
+ 'onreadystatechange' in document.createElement(goog.dom.TagName.SCRIPT)) {
+ return function(cb) {
+ var script = document.createElement(goog.dom.TagName.SCRIPT);
+ script.onreadystatechange = function() {
+ // Clean up and call the callback.
+ script.onreadystatechange = null;
+ script.parentNode.removeChild(script);
+ script = null;
+ cb();
+ cb = null;
+ };
+ document.documentElement.appendChild(script);
+ };
+ }
+ // Fall back to setTimeout with 0. In browsers this creates a delay of 5ms
+ // or more.
+ // NOTE(user): This fallback is used for IE11.
+ return function(cb) { goog.global.setTimeout(cb, 0); };
+};
+
+
+/**
+ * Helper function that is overrided to protect callbacks with entry point
+ * monitor if the application monitors entry points.
+ * @param {function()} callback Callback function to fire as soon as possible.
+ * @return {function()} The wrapped callback.
+ * @private
+ */
+goog.async.nextTick.wrapCallback_ = goog.functions.identity;
+
+
+// Register the callback function as an entry point, so that it can be
+// monitored for exception handling, etc. This has to be done in this file
+// since it requires special code to handle all browsers.
+goog.debug.entryPointRegistry.register(
+ /**
+ * @param {function(!Function): !Function} transformer The transforming
+ * function.
+ */
+ function(transformer) { goog.async.nextTick.wrapCallback_ = transformer; });
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.PointerEvent');
+
+
+goog.require('ol.events');
+goog.require('ol.events.Event');
+
+
+/**
+ * A class for pointer events.
+ *
+ * This class is used as an abstraction for mouse events,
+ * touch events and even native pointer events.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @param {string} type The type of the event to create.
+ * @param {Event} originalEvent The event.
+ * @param {Object.<string, ?>=} opt_eventDict An optional dictionary of
+ * initial event properties.
+ */
+ol.pointer.PointerEvent = function(type, originalEvent, opt_eventDict) {
+ ol.events.Event.call(this, type);
+
+ /**
+ * @const
+ * @type {Event}
+ */
+ this.originalEvent = originalEvent;
+
+ var eventDict = opt_eventDict ? opt_eventDict : {};
+
+ /**
+ * @type {number}
+ */
+ this.buttons = this.getButtons_(eventDict);
+
+ /**
+ * @type {number}
+ */
+ this.pressure = this.getPressure_(eventDict, this.buttons);
+
+ // MouseEvent related properties
+
+ /**
+ * @type {boolean}
+ */
+ this.bubbles = 'bubbles' in eventDict ? eventDict['bubbles'] : false;
+
+ /**
+ * @type {boolean}
+ */
+ this.cancelable = 'cancelable' in eventDict ? eventDict['cancelable'] : false;
+
+ /**
+ * @type {Object}
+ */
+ this.view = 'view' in eventDict ? eventDict['view'] : null;
+
+ /**
+ * @type {number}
+ */
+ this.detail = 'detail' in eventDict ? eventDict['detail'] : null;
+
+ /**
+ * @type {number}
+ */
+ this.screenX = 'screenX' in eventDict ? eventDict['screenX'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.screenY = 'screenY' in eventDict ? eventDict['screenY'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.clientX = 'clientX' in eventDict ? eventDict['clientX'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.clientY = 'clientY' in eventDict ? eventDict['clientY'] : 0;
+
+ /**
+ * @type {boolean}
+ */
+ this.ctrlKey = 'ctrlKey' in eventDict ? eventDict['ctrlKey'] : false;
+
+ /**
+ * @type {boolean}
+ */
+ this.altKey = 'altKey' in eventDict ? eventDict['altKey'] : false;
+
+ /**
+ * @type {boolean}
+ */
+ this.shiftKey = 'shiftKey' in eventDict ? eventDict['shiftKey'] : false;
+
+ /**
+ * @type {boolean}
+ */
+ this.metaKey = 'metaKey' in eventDict ? eventDict['metaKey'] : false;
+
+ /**
+ * @type {number}
+ */
+ this.button = 'button' in eventDict ? eventDict['button'] : 0;
+
+ /**
+ * @type {Node}
+ */
+ this.relatedTarget = 'relatedTarget' in eventDict ?
+ eventDict['relatedTarget'] : null;
+
+ // PointerEvent related properties
+
+ /**
+ * @const
+ * @type {number}
+ */
+ this.pointerId = 'pointerId' in eventDict ? eventDict['pointerId'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.width = 'width' in eventDict ? eventDict['width'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.height = 'height' in eventDict ? eventDict['height'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.tiltX = 'tiltX' in eventDict ? eventDict['tiltX'] : 0;
+
+ /**
+ * @type {number}
+ */
+ this.tiltY = 'tiltY' in eventDict ? eventDict['tiltY'] : 0;
+
+ /**
+ * @type {string}
+ */
+ this.pointerType = 'pointerType' in eventDict ? eventDict['pointerType'] : '';
+
+ /**
+ * @type {number}
+ */
+ this.hwTimestamp = 'hwTimestamp' in eventDict ? eventDict['hwTimestamp'] : 0;
+
+ /**
+ * @type {boolean}
+ */
+ this.isPrimary = 'isPrimary' in eventDict ? eventDict['isPrimary'] : false;
+
+ // keep the semantics of preventDefault
+ if (originalEvent.preventDefault) {
+ this.preventDefault = function() {
+ originalEvent.preventDefault();
+ };
+ }
+};
+ol.inherits(ol.pointer.PointerEvent, ol.events.Event);
+
+
+/**
+ * @private
+ * @param {Object.<string, ?>} eventDict The event dictionary.
+ * @return {number} Button indicator.
+ */
+ol.pointer.PointerEvent.prototype.getButtons_ = function(eventDict) {
+ // According to the w3c spec,
+ // http://www.w3.org/TR/DOM-Level-3-Events/#events-MouseEvent-button
+ // MouseEvent.button == 0 can mean either no mouse button depressed, or the
+ // left mouse button depressed.
+ //
+ // As of now, the only way to distinguish between the two states of
+ // MouseEvent.button is by using the deprecated MouseEvent.which property, as
+ // this maps mouse buttons to positive integers > 0, and uses 0 to mean that
+ // no mouse button is held.
+ //
+ // MouseEvent.which is derived from MouseEvent.button at MouseEvent creation,
+ // but initMouseEvent does not expose an argument with which to set
+ // MouseEvent.which. Calling initMouseEvent with a buttonArg of 0 will set
+ // MouseEvent.button == 0 and MouseEvent.which == 1, breaking the expectations
+ // of app developers.
+ //
+ // The only way to propagate the correct state of MouseEvent.which and
+ // MouseEvent.button to a new MouseEvent.button == 0 and MouseEvent.which == 0
+ // is to call initMouseEvent with a buttonArg value of -1.
+ //
+ // This is fixed with DOM Level 4's use of buttons
+ var buttons;
+ if (eventDict.buttons || ol.pointer.PointerEvent.HAS_BUTTONS) {
+ buttons = eventDict.buttons;
+ } else {
+ switch (eventDict.which) {
+ case 1: buttons = 1; break;
+ case 2: buttons = 4; break;
+ case 3: buttons = 2; break;
+ default: buttons = 0;
+ }
+ }
+ return buttons;
+};
+
+
+/**
+ * @private
+ * @param {Object.<string, ?>} eventDict The event dictionary.
+ * @param {number} buttons Button indicator.
+ * @return {number} The pressure.
+ */
+ol.pointer.PointerEvent.prototype.getPressure_ = function(eventDict, buttons) {
+ // Spec requires that pointers without pressure specified use 0.5 for down
+ // state and 0 for up state.
+ var pressure = 0;
+ if (eventDict.pressure) {
+ pressure = eventDict.pressure;
+ } else {
+ pressure = buttons ? 0.5 : 0;
+ }
+ return pressure;
+};
+
+
+/**
+ * Is the `buttons` property supported?
+ * @type {boolean}
+ */
+ol.pointer.PointerEvent.HAS_BUTTONS = false;
+
+
+/**
+ * Checks if the `buttons` property is supported.
+ */
+(function() {
+ try {
+ var ev = new MouseEvent('click', {buttons: 1});
+ ol.pointer.PointerEvent.HAS_BUTTONS = ev.buttons === 1;
+ } catch (e) {
+ // pass
+ }
+})();
+
+goog.provide('ol.webgl');
+goog.provide('ol.webgl.WebGLContextEventType');
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.webgl.CONTEXT_IDS_ = [
+ 'experimental-webgl',
+ 'webgl',
+ 'webkit-3d',
+ 'moz-webgl'
+];
+
+
+/**
+ * @enum {string}
+ */
+ol.webgl.WebGLContextEventType = {
+ LOST: 'webglcontextlost',
+ RESTORED: 'webglcontextrestored'
+};
+
+
+/**
+ * @param {HTMLCanvasElement} canvas Canvas.
+ * @param {Object=} opt_attributes Attributes.
+ * @return {WebGLRenderingContext} WebGL rendering context.
+ */
+ol.webgl.getContext = function(canvas, opt_attributes) {
+ var context, i, ii = ol.webgl.CONTEXT_IDS_.length;
+ for (i = 0; i < ii; ++i) {
+ try {
+ context = canvas.getContext(ol.webgl.CONTEXT_IDS_[i], opt_attributes);
+ if (context) {
+ return /** @type {!WebGLRenderingContext} */ (context);
+ }
+ } catch (e) {
+ // pass
+ }
+ }
+ return null;
+};
+
+goog.provide('ol.has');
+
+goog.require('ol');
+goog.require('ol.dom');
+goog.require('ol.webgl');
+
+
+var ua = typeof navigator !== 'undefined' ?
+ navigator.userAgent.toLowerCase() : '';
+
+/**
+ * User agent string says we are dealing with Firefox as browser.
+ * @type {boolean}
+ */
+ol.has.FIREFOX = ua.indexOf('firefox') !== -1;
+
+/**
+ * User agent string says we are dealing with Safari as browser.
+ * @type {boolean}
+ */
+ol.has.SAFARI = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
+
+/**
+ * User agent string says we are dealing with a Mac as platform.
+ * @type {boolean}
+ */
+ol.has.MAC = ua.indexOf('macintosh') !== -1;
+
+
+/**
+ * The ratio between physical pixels and device-independent pixels
+ * (dips) on the device (`window.devicePixelRatio`).
+ * @const
+ * @type {number}
+ * @api stable
+ */
+ol.has.DEVICE_PIXEL_RATIO = ol.global.devicePixelRatio || 1;
+
+
+/**
+ * True if the browser's Canvas implementation implements {get,set}LineDash.
+ * @type {boolean}
+ */
+ol.has.CANVAS_LINE_DASH = false;
+
+
+/**
+ * True if both the library and browser support Canvas. Always `false`
+ * if `ol.ENABLE_CANVAS` is set to `false` at compile time.
+ * @const
+ * @type {boolean}
+ * @api stable
+ */
+ol.has.CANVAS = ol.ENABLE_CANVAS && (
+ /**
+ * @return {boolean} Canvas supported.
+ */
+ function() {
+ if (!('HTMLCanvasElement' in ol.global)) {
+ return false;
+ }
+ try {
+ var context = ol.dom.createCanvasContext2D();
+ if (!context) {
+ return false;
+ } else {
+ if (context.setLineDash !== undefined) {
+ ol.has.CANVAS_LINE_DASH = true;
+ }
+ return true;
+ }
+ } catch (e) {
+ return false;
+ }
+ })();
+
+
+/**
+ * Indicates if DeviceOrientation is supported in the user's browser.
+ * @const
+ * @type {boolean}
+ * @api stable
+ */
+ol.has.DEVICE_ORIENTATION = 'DeviceOrientationEvent' in ol.global;
+
+
+/**
+ * True if `ol.ENABLE_DOM` is set to `true` at compile time.
+ * @const
+ * @type {boolean}
+ */
+ol.has.DOM = ol.ENABLE_DOM;
+
+
+/**
+ * Is HTML5 geolocation supported in the current browser?
+ * @const
+ * @type {boolean}
+ * @api stable
+ */
+ol.has.GEOLOCATION = 'geolocation' in ol.global.navigator;
+
+
+/**
+ * True if browser supports touch events.
+ * @const
+ * @type {boolean}
+ * @api stable
+ */
+ol.has.TOUCH = ol.ASSUME_TOUCH || 'ontouchstart' in ol.global;
+
+
+/**
+ * True if browser supports pointer events.
+ * @const
+ * @type {boolean}
+ */
+ol.has.POINTER = 'PointerEvent' in ol.global;
+
+
+/**
+ * True if browser supports ms pointer events (IE 10).
+ * @const
+ * @type {boolean}
+ */
+ol.has.MSPOINTER = !!(ol.global.navigator.msPointerEnabled);
+
+
+/**
+ * True if both OpenLayers and browser support WebGL. Always `false`
+ * if `ol.ENABLE_WEBGL` is set to `false` at compile time.
+ * @const
+ * @type {boolean}
+ * @api stable
+ */
+ol.has.WEBGL;
+
+
+(function() {
+ if (ol.ENABLE_WEBGL) {
+ var hasWebGL = false;
+ var textureSize;
+ var /** @type {Array.<string>} */ extensions = [];
+
+ if ('WebGLRenderingContext' in ol.global) {
+ try {
+ var canvas = /** @type {HTMLCanvasElement} */
+ (document.createElement('CANVAS'));
+ var gl = ol.webgl.getContext(canvas, {
+ failIfMajorPerformanceCaveat: true
+ });
+ if (gl) {
+ hasWebGL = true;
+ textureSize = /** @type {number} */
+ (gl.getParameter(gl.MAX_TEXTURE_SIZE));
+ extensions = gl.getSupportedExtensions();
+ }
+ } catch (e) {
+ // pass
+ }
+ }
+ ol.has.WEBGL = hasWebGL;
+ ol.WEBGL_EXTENSIONS = extensions;
+ ol.WEBGL_MAX_TEXTURE_SIZE = textureSize;
+ }
+})();
+
+goog.provide('ol.pointer.EventSource');
+
+
+/**
+ * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
+ * @param {!Object.<string, function(Event)>} mapping Event
+ * mapping.
+ * @constructor
+ */
+ol.pointer.EventSource = function(dispatcher, mapping) {
+ /**
+ * @type {ol.pointer.PointerEventHandler}
+ */
+ this.dispatcher = dispatcher;
+
+ /**
+ * @private
+ * @const
+ * @type {!Object.<string, function(Event)>}
+ */
+ this.mapping_ = mapping;
+};
+
+
+/**
+ * List of events supported by this source.
+ * @return {Array.<string>} Event names
+ */
+ol.pointer.EventSource.prototype.getEvents = function() {
+ return Object.keys(this.mapping_);
+};
+
+
+/**
+ * Returns a mapping between the supported event types and
+ * the handlers that should handle an event.
+ * @return {Object.<string, function(Event)>}
+ * Event/Handler mapping
+ */
+ol.pointer.EventSource.prototype.getMapping = function() {
+ return this.mapping_;
+};
+
+
+/**
+ * Returns the handler that should handle a given event type.
+ * @param {string} eventType The event type.
+ * @return {function(Event)} Handler
+ */
+ol.pointer.EventSource.prototype.getHandlerForEvent = function(eventType) {
+ return this.mapping_[eventType];
+};
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.MouseSource');
+
+goog.require('ol.pointer.EventSource');
+
+
+/**
+ * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
+ * @constructor
+ * @extends {ol.pointer.EventSource}
+ */
+ol.pointer.MouseSource = function(dispatcher) {
+ var mapping = {
+ 'mousedown': this.mousedown,
+ 'mousemove': this.mousemove,
+ 'mouseup': this.mouseup,
+ 'mouseover': this.mouseover,
+ 'mouseout': this.mouseout
+ };
+ ol.pointer.EventSource.call(this, dispatcher, mapping);
+
+ /**
+ * @const
+ * @type {!Object.<string, Event|Object>}
+ */
+ this.pointerMap = dispatcher.pointerMap;
+
+ /**
+ * @const
+ * @type {Array.<ol.Pixel>}
+ */
+ this.lastTouches = [];
+};
+ol.inherits(ol.pointer.MouseSource, ol.pointer.EventSource);
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.pointer.MouseSource.POINTER_ID = 1;
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.pointer.MouseSource.POINTER_TYPE = 'mouse';
+
+
+/**
+ * Radius around touchend that swallows mouse events.
+ *
+ * @const
+ * @type {number}
+ */
+ol.pointer.MouseSource.DEDUP_DIST = 25;
+
+
+/**
+ * Detect if a mouse event was simulated from a touch by
+ * checking if previously there was a touch event at the
+ * same position.
+ *
+ * FIXME - Known problem with the native Android browser on
+ * Samsung GT-I9100 (Android 4.1.2):
+ * In case the page is scrolled, this function does not work
+ * correctly when a canvas is used (WebGL or canvas renderer).
+ * Mouse listeners on canvas elements (for this browser), create
+ * two mouse events: One 'good' and one 'bad' one (on other browsers or
+ * when a div is used, there is only one event). For the 'bad' one,
+ * clientX/clientY and also pageX/pageY are wrong when the page
+ * is scrolled. Because of that, this function can not detect if
+ * the events were simulated from a touch event. As result, a
+ * pointer event at a wrong position is dispatched, which confuses
+ * the map interactions.
+ * It is unclear, how one can get the correct position for the event
+ * or detect that the positions are invalid.
+ *
+ * @private
+ * @param {Event} inEvent The in event.
+ * @return {boolean} True, if the event was generated by a touch.
+ */
+ol.pointer.MouseSource.prototype.isEventSimulatedFromTouch_ = function(inEvent) {
+ var lts = this.lastTouches;
+ var x = inEvent.clientX, y = inEvent.clientY;
+ for (var i = 0, l = lts.length, t; i < l && (t = lts[i]); i++) {
+ // simulated mouse events will be swallowed near a primary touchend
+ var dx = Math.abs(x - t[0]), dy = Math.abs(y - t[1]);
+ if (dx <= ol.pointer.MouseSource.DEDUP_DIST &&
+ dy <= ol.pointer.MouseSource.DEDUP_DIST) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Creates a copy of the original event that will be used
+ * for the fake pointer event.
+ *
+ * @param {Event} inEvent The in event.
+ * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
+ * @return {Object} The copied event.
+ */
+ol.pointer.MouseSource.prepareEvent = function(inEvent, dispatcher) {
+ var e = dispatcher.cloneEvent(inEvent, inEvent);
+
+ // forward mouse preventDefault
+ var pd = e.preventDefault;
+ e.preventDefault = function() {
+ inEvent.preventDefault();
+ pd();
+ };
+
+ e.pointerId = ol.pointer.MouseSource.POINTER_ID;
+ e.isPrimary = true;
+ e.pointerType = ol.pointer.MouseSource.POINTER_TYPE;
+
+ return e;
+};
+
+
+/**
+ * Handler for `mousedown`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.mousedown = function(inEvent) {
+ if (!this.isEventSimulatedFromTouch_(inEvent)) {
+ // TODO(dfreedman) workaround for some elements not sending mouseup
+ // http://crbug/149091
+ if (ol.pointer.MouseSource.POINTER_ID.toString() in this.pointerMap) {
+ this.cancel(inEvent);
+ }
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.pointerMap[ol.pointer.MouseSource.POINTER_ID.toString()] = inEvent;
+ this.dispatcher.down(e, inEvent);
+ }
+};
+
+
+/**
+ * Handler for `mousemove`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.mousemove = function(inEvent) {
+ if (!this.isEventSimulatedFromTouch_(inEvent)) {
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.dispatcher.move(e, inEvent);
+ }
+};
+
+
+/**
+ * Handler for `mouseup`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.mouseup = function(inEvent) {
+ if (!this.isEventSimulatedFromTouch_(inEvent)) {
+ var p = this.pointerMap[ol.pointer.MouseSource.POINTER_ID.toString()];
+
+ if (p && p.button === inEvent.button) {
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.dispatcher.up(e, inEvent);
+ this.cleanupMouse();
+ }
+ }
+};
+
+
+/**
+ * Handler for `mouseover`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.mouseover = function(inEvent) {
+ if (!this.isEventSimulatedFromTouch_(inEvent)) {
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.dispatcher.enterOver(e, inEvent);
+ }
+};
+
+
+/**
+ * Handler for `mouseout`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.mouseout = function(inEvent) {
+ if (!this.isEventSimulatedFromTouch_(inEvent)) {
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.dispatcher.leaveOut(e, inEvent);
+ }
+};
+
+
+/**
+ * Dispatches a `pointercancel` event.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MouseSource.prototype.cancel = function(inEvent) {
+ var e = ol.pointer.MouseSource.prepareEvent(inEvent, this.dispatcher);
+ this.dispatcher.cancel(e, inEvent);
+ this.cleanupMouse();
+};
+
+
+/**
+ * Remove the mouse from the list of active pointers.
+ */
+ol.pointer.MouseSource.prototype.cleanupMouse = function() {
+ delete this.pointerMap[ol.pointer.MouseSource.POINTER_ID.toString()];
+};
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.MsSource');
+
+goog.require('ol.pointer.EventSource');
+
+
+/**
+ * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
+ * @constructor
+ * @extends {ol.pointer.EventSource}
+ */
+ol.pointer.MsSource = function(dispatcher) {
+ var mapping = {
+ 'MSPointerDown': this.msPointerDown,
+ 'MSPointerMove': this.msPointerMove,
+ 'MSPointerUp': this.msPointerUp,
+ 'MSPointerOut': this.msPointerOut,
+ 'MSPointerOver': this.msPointerOver,
+ 'MSPointerCancel': this.msPointerCancel,
+ 'MSGotPointerCapture': this.msGotPointerCapture,
+ 'MSLostPointerCapture': this.msLostPointerCapture
+ };
+ ol.pointer.EventSource.call(this, dispatcher, mapping);
+
+ /**
+ * @const
+ * @type {!Object.<string, Event|Object>}
+ */
+ this.pointerMap = dispatcher.pointerMap;
+
+ /**
+ * @const
+ * @type {Array.<string>}
+ */
+ this.POINTER_TYPES = [
+ '',
+ 'unavailable',
+ 'touch',
+ 'pen',
+ 'mouse'
+ ];
+};
+ol.inherits(ol.pointer.MsSource, ol.pointer.EventSource);
+
+
+/**
+ * Creates a copy of the original event that will be used
+ * for the fake pointer event.
+ *
+ * @private
+ * @param {Event} inEvent The in event.
+ * @return {Object} The copied event.
+ */
+ol.pointer.MsSource.prototype.prepareEvent_ = function(inEvent) {
+ var e = inEvent;
+ if (goog.isNumber(inEvent.pointerType)) {
+ e = this.dispatcher.cloneEvent(inEvent, inEvent);
+ e.pointerType = this.POINTER_TYPES[inEvent.pointerType];
+ }
+
+ return e;
+};
+
+
+/**
+ * Remove this pointer from the list of active pointers.
+ * @param {number} pointerId Pointer identifier.
+ */
+ol.pointer.MsSource.prototype.cleanup = function(pointerId) {
+ delete this.pointerMap[pointerId.toString()];
+};
+
+
+/**
+ * Handler for `msPointerDown`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerDown = function(inEvent) {
+ this.pointerMap[inEvent.pointerId.toString()] = inEvent;
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.down(e, inEvent);
+};
+
+
+/**
+ * Handler for `msPointerMove`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerMove = function(inEvent) {
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.move(e, inEvent);
+};
+
+
+/**
+ * Handler for `msPointerUp`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerUp = function(inEvent) {
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.up(e, inEvent);
+ this.cleanup(inEvent.pointerId);
+};
+
+
+/**
+ * Handler for `msPointerOut`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerOut = function(inEvent) {
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.leaveOut(e, inEvent);
+};
+
+
+/**
+ * Handler for `msPointerOver`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerOver = function(inEvent) {
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.enterOver(e, inEvent);
+};
+
+
+/**
+ * Handler for `msPointerCancel`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msPointerCancel = function(inEvent) {
+ var e = this.prepareEvent_(inEvent);
+ this.dispatcher.cancel(e, inEvent);
+ this.cleanup(inEvent.pointerId);
+};
+
+
+/**
+ * Handler for `msLostPointerCapture`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msLostPointerCapture = function(inEvent) {
+ var e = this.dispatcher.makeEvent('lostpointercapture',
+ inEvent, inEvent);
+ this.dispatcher.dispatchEvent(e);
+};
+
+
+/**
+ * Handler for `msGotPointerCapture`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.MsSource.prototype.msGotPointerCapture = function(inEvent) {
+ var e = this.dispatcher.makeEvent('gotpointercapture',
+ inEvent, inEvent);
+ this.dispatcher.dispatchEvent(e);
+};
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.NativeSource');
+
+goog.require('ol.pointer.EventSource');
+
+
+/**
+ * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
+ * @constructor
+ * @extends {ol.pointer.EventSource}
+ */
+ol.pointer.NativeSource = function(dispatcher) {
+ var mapping = {
+ 'pointerdown': this.pointerDown,
+ 'pointermove': this.pointerMove,
+ 'pointerup': this.pointerUp,
+ 'pointerout': this.pointerOut,
+ 'pointerover': this.pointerOver,
+ 'pointercancel': this.pointerCancel,
+ 'gotpointercapture': this.gotPointerCapture,
+ 'lostpointercapture': this.lostPointerCapture
+ };
+ ol.pointer.EventSource.call(this, dispatcher, mapping);
+};
+ol.inherits(ol.pointer.NativeSource, ol.pointer.EventSource);
+
+
+/**
+ * Handler for `pointerdown`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerDown = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `pointermove`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerMove = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `pointerup`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerUp = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `pointerout`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerOut = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `pointerover`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerOver = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `pointercancel`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.pointerCancel = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `lostpointercapture`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.lostPointerCapture = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+
+/**
+ * Handler for `gotpointercapture`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.NativeSource.prototype.gotPointerCapture = function(inEvent) {
+ this.dispatcher.fireNativeEvent(inEvent);
+};
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.TouchSource');
+
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.pointer.EventSource');
+goog.require('ol.pointer.MouseSource');
+
+
+/**
+ * @constructor
+ * @param {ol.pointer.PointerEventHandler} dispatcher The event handler.
+ * @param {ol.pointer.MouseSource} mouseSource Mouse source.
+ * @extends {ol.pointer.EventSource}
+ */
+ol.pointer.TouchSource = function(dispatcher, mouseSource) {
+ var mapping = {
+ 'touchstart': this.touchstart,
+ 'touchmove': this.touchmove,
+ 'touchend': this.touchend,
+ 'touchcancel': this.touchcancel
+ };
+ ol.pointer.EventSource.call(this, dispatcher, mapping);
+
+ /**
+ * @const
+ * @type {!Object.<string, Event|Object>}
+ */
+ this.pointerMap = dispatcher.pointerMap;
+
+ /**
+ * @const
+ * @type {ol.pointer.MouseSource}
+ */
+ this.mouseSource = mouseSource;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.firstTouchId_ = undefined;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.clickCount_ = 0;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.resetId_ = undefined;
+};
+ol.inherits(ol.pointer.TouchSource, ol.pointer.EventSource);
+
+
+/**
+ * Mouse event timeout: This should be long enough to
+ * ignore compat mouse events made by touch.
+ * @const
+ * @type {number}
+ */
+ol.pointer.TouchSource.DEDUP_TIMEOUT = 2500;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.pointer.TouchSource.CLICK_COUNT_TIMEOUT = 200;
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.pointer.TouchSource.POINTER_TYPE = 'touch';
+
+
+/**
+ * @private
+ * @param {Touch} inTouch The in touch.
+ * @return {boolean} True, if this is the primary touch.
+ */
+ol.pointer.TouchSource.prototype.isPrimaryTouch_ = function(inTouch) {
+ return this.firstTouchId_ === inTouch.identifier;
+};
+
+
+/**
+ * Set primary touch if there are no pointers, or the only pointer is the mouse.
+ * @param {Touch} inTouch The in touch.
+ * @private
+ */
+ol.pointer.TouchSource.prototype.setPrimaryTouch_ = function(inTouch) {
+ var count = Object.keys(this.pointerMap).length;
+ if (count === 0 || (count === 1 &&
+ ol.pointer.MouseSource.POINTER_ID.toString() in this.pointerMap)) {
+ this.firstTouchId_ = inTouch.identifier;
+ this.cancelResetClickCount_();
+ }
+};
+
+
+/**
+ * @private
+ * @param {Object} inPointer The in pointer object.
+ */
+ol.pointer.TouchSource.prototype.removePrimaryPointer_ = function(inPointer) {
+ if (inPointer.isPrimary) {
+ this.firstTouchId_ = undefined;
+ this.resetClickCount_();
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.pointer.TouchSource.prototype.resetClickCount_ = function() {
+ this.resetId_ = ol.global.setTimeout(
+ this.resetClickCountHandler_.bind(this),
+ ol.pointer.TouchSource.CLICK_COUNT_TIMEOUT);
+};
+
+
+/**
+ * @private
+ */
+ol.pointer.TouchSource.prototype.resetClickCountHandler_ = function() {
+ this.clickCount_ = 0;
+ this.resetId_ = undefined;
+};
+
+
+/**
+ * @private
+ */
+ol.pointer.TouchSource.prototype.cancelResetClickCount_ = function() {
+ if (this.resetId_ !== undefined) {
+ ol.global.clearTimeout(this.resetId_);
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} browserEvent Browser event
+ * @param {Touch} inTouch Touch event
+ * @return {Object} A pointer object.
+ */
+ol.pointer.TouchSource.prototype.touchToPointer_ = function(browserEvent, inTouch) {
+ var e = this.dispatcher.cloneEvent(browserEvent, inTouch);
+ // Spec specifies that pointerId 1 is reserved for Mouse.
+ // Touch identifiers can start at 0.
+ // Add 2 to the touch identifier for compatibility.
+ e.pointerId = inTouch.identifier + 2;
+ // TODO: check if this is necessary?
+ //e.target = findTarget(e);
+ e.bubbles = true;
+ e.cancelable = true;
+ e.detail = this.clickCount_;
+ e.button = 0;
+ e.buttons = 1;
+ e.width = inTouch.webkitRadiusX || inTouch.radiusX || 0;
+ e.height = inTouch.webkitRadiusY || inTouch.radiusY || 0;
+ e.pressure = inTouch.webkitForce || inTouch.force || 0.5;
+ e.isPrimary = this.isPrimaryTouch_(inTouch);
+ e.pointerType = ol.pointer.TouchSource.POINTER_TYPE;
+
+ // make sure that the properties that are different for
+ // each `Touch` object are not copied from the BrowserEvent object
+ e.clientX = inTouch.clientX;
+ e.clientY = inTouch.clientY;
+ e.screenX = inTouch.screenX;
+ e.screenY = inTouch.screenY;
+
+ return e;
+};
+
+
+/**
+ * @private
+ * @param {Event} inEvent Touch event
+ * @param {function(Event, Object)} inFunction In function.
+ */
+ol.pointer.TouchSource.prototype.processTouches_ = function(inEvent, inFunction) {
+ var touches = Array.prototype.slice.call(
+ inEvent.changedTouches);
+ var count = touches.length;
+ function preventDefault() {
+ inEvent.preventDefault();
+ }
+ var i, pointer;
+ for (i = 0; i < count; ++i) {
+ pointer = this.touchToPointer_(inEvent, touches[i]);
+ // forward touch preventDefaults
+ pointer.preventDefault = preventDefault;
+ inFunction.call(this, inEvent, pointer);
+ }
+};
+
+
+/**
+ * @private
+ * @param {TouchList} touchList The touch list.
+ * @param {number} searchId Search identifier.
+ * @return {boolean} True, if the `Touch` with the given id is in the list.
+ */
+ol.pointer.TouchSource.prototype.findTouch_ = function(touchList, searchId) {
+ var l = touchList.length;
+ var touch;
+ for (var i = 0; i < l; i++) {
+ touch = touchList[i];
+ if (touch.identifier === searchId) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * In some instances, a touchstart can happen without a touchend. This
+ * leaves the pointermap in a broken state.
+ * Therefore, on every touchstart, we remove the touches that did not fire a
+ * touchend event.
+ * To keep state globally consistent, we fire a pointercancel for
+ * this "abandoned" touch
+ *
+ * @private
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.TouchSource.prototype.vacuumTouches_ = function(inEvent) {
+ var touchList = inEvent.touches;
+ // pointerMap.getCount() should be < touchList.length here,
+ // as the touchstart has not been processed yet.
+ var keys = Object.keys(this.pointerMap);
+ var count = keys.length;
+ if (count >= touchList.length) {
+ var d = [];
+ var i, key, value;
+ for (i = 0; i < count; ++i) {
+ key = keys[i];
+ value = this.pointerMap[key];
+ // Never remove pointerId == 1, which is mouse.
+ // Touch identifiers are 2 smaller than their pointerId, which is the
+ // index in pointermap.
+ if (key != ol.pointer.MouseSource.POINTER_ID &&
+ !this.findTouch_(touchList, key - 2)) {
+ d.push(value.out);
+ }
+ }
+ for (i = 0; i < d.length; ++i) {
+ this.cancelOut_(inEvent, d[i]);
+ }
+ }
+};
+
+
+/**
+ * Handler for `touchstart`, triggers `pointerover`,
+ * `pointerenter` and `pointerdown` events.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.TouchSource.prototype.touchstart = function(inEvent) {
+ this.vacuumTouches_(inEvent);
+ this.setPrimaryTouch_(inEvent.changedTouches[0]);
+ this.dedupSynthMouse_(inEvent);
+ this.clickCount_++;
+ this.processTouches_(inEvent, this.overDown_);
+};
+
+
+/**
+ * @private
+ * @param {Event} browserEvent The event.
+ * @param {Object} inPointer The in pointer object.
+ */
+ol.pointer.TouchSource.prototype.overDown_ = function(browserEvent, inPointer) {
+ this.pointerMap[inPointer.pointerId] = {
+ target: inPointer.target,
+ out: inPointer,
+ outTarget: inPointer.target
+ };
+ this.dispatcher.over(inPointer, browserEvent);
+ this.dispatcher.enter(inPointer, browserEvent);
+ this.dispatcher.down(inPointer, browserEvent);
+};
+
+
+/**
+ * Handler for `touchmove`.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.TouchSource.prototype.touchmove = function(inEvent) {
+ inEvent.preventDefault();
+ this.processTouches_(inEvent, this.moveOverOut_);
+};
+
+
+/**
+ * @private
+ * @param {Event} browserEvent The event.
+ * @param {Object} inPointer The in pointer.
+ */
+ol.pointer.TouchSource.prototype.moveOverOut_ = function(browserEvent, inPointer) {
+ var event = inPointer;
+ var pointer = this.pointerMap[event.pointerId];
+ // a finger drifted off the screen, ignore it
+ if (!pointer) {
+ return;
+ }
+ var outEvent = pointer.out;
+ var outTarget = pointer.outTarget;
+ this.dispatcher.move(event, browserEvent);
+ if (outEvent && outTarget !== event.target) {
+ outEvent.relatedTarget = event.target;
+ event.relatedTarget = outTarget;
+ // recover from retargeting by shadow
+ outEvent.target = outTarget;
+ if (event.target) {
+ this.dispatcher.leaveOut(outEvent, browserEvent);
+ this.dispatcher.enterOver(event, browserEvent);
+ } else {
+ // clean up case when finger leaves the screen
+ event.target = outTarget;
+ event.relatedTarget = null;
+ this.cancelOut_(browserEvent, event);
+ }
+ }
+ pointer.out = event;
+ pointer.outTarget = event.target;
+};
+
+
+/**
+ * Handler for `touchend`, triggers `pointerup`,
+ * `pointerout` and `pointerleave` events.
+ *
+ * @param {Event} inEvent The event.
+ */
+ol.pointer.TouchSource.prototype.touchend = function(inEvent) {
+ this.dedupSynthMouse_(inEvent);
+ this.processTouches_(inEvent, this.upOut_);
+};
+
+
+/**
+ * @private
+ * @param {Event} browserEvent An event.
+ * @param {Object} inPointer The inPointer object.
+ */
+ol.pointer.TouchSource.prototype.upOut_ = function(browserEvent, inPointer) {
+ this.dispatcher.up(inPointer, browserEvent);
+ this.dispatcher.out(inPointer, browserEvent);
+ this.dispatcher.leave(inPointer, browserEvent);
+ this.cleanUpPointer_(inPointer);
+};
+
+
+/**
+ * Handler for `touchcancel`, triggers `pointercancel`,
+ * `pointerout` and `pointerleave` events.
+ *
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.TouchSource.prototype.touchcancel = function(inEvent) {
+ this.processTouches_(inEvent, this.cancelOut_);
+};
+
+
+/**
+ * @private
+ * @param {Event} browserEvent The event.
+ * @param {Object} inPointer The in pointer.
+ */
+ol.pointer.TouchSource.prototype.cancelOut_ = function(browserEvent, inPointer) {
+ this.dispatcher.cancel(inPointer, browserEvent);
+ this.dispatcher.out(inPointer, browserEvent);
+ this.dispatcher.leave(inPointer, browserEvent);
+ this.cleanUpPointer_(inPointer);
+};
+
+
+/**
+ * @private
+ * @param {Object} inPointer The inPointer object.
+ */
+ol.pointer.TouchSource.prototype.cleanUpPointer_ = function(inPointer) {
+ delete this.pointerMap[inPointer.pointerId];
+ this.removePrimaryPointer_(inPointer);
+};
+
+
+/**
+ * Prevent synth mouse events from creating pointer events.
+ *
+ * @private
+ * @param {Event} inEvent The in event.
+ */
+ol.pointer.TouchSource.prototype.dedupSynthMouse_ = function(inEvent) {
+ var lts = this.mouseSource.lastTouches;
+ var t = inEvent.changedTouches[0];
+ // only the primary finger will synth mouse events
+ if (this.isPrimaryTouch_(t)) {
+ // remember x/y of last touch
+ var lt = [t.clientX, t.clientY];
+ lts.push(lt);
+
+ ol.global.setTimeout(function() {
+ // remove touch after timeout
+ ol.array.remove(lts, lt);
+ }, ol.pointer.TouchSource.DEDUP_TIMEOUT);
+ }
+};
+
+// Based on https://github.com/Polymer/PointerEvents
+
+// Copyright (c) 2013 The Polymer Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+goog.provide('ol.pointer.PointerEventHandler');
+
+goog.require('ol.events');
+goog.require('ol.events.EventTarget');
+
+goog.require('ol.has');
+goog.require('ol.pointer.MouseSource');
+goog.require('ol.pointer.MsSource');
+goog.require('ol.pointer.NativeSource');
+goog.require('ol.pointer.PointerEvent');
+goog.require('ol.pointer.TouchSource');
+
+
+/**
+ * @constructor
+ * @extends {ol.events.EventTarget}
+ * @param {Element|HTMLDocument} element Viewport element.
+ */
+ol.pointer.PointerEventHandler = function(element) {
+ ol.events.EventTarget.call(this);
+
+ /**
+ * @const
+ * @private
+ * @type {Element|HTMLDocument}
+ */
+ this.element_ = element;
+
+ /**
+ * @const
+ * @type {!Object.<string, Event|Object>}
+ */
+ this.pointerMap = {};
+
+ /**
+ * @type {Object.<string, function(Event)>}
+ * @private
+ */
+ this.eventMap_ = {};
+
+ /**
+ * @type {Array.<ol.pointer.EventSource>}
+ * @private
+ */
+ this.eventSourceList_ = [];
+
+ this.registerSources();
+};
+ol.inherits(ol.pointer.PointerEventHandler, ol.events.EventTarget);
+
+
+/**
+ * Set up the event sources (mouse, touch and native pointers)
+ * that generate pointer events.
+ */
+ol.pointer.PointerEventHandler.prototype.registerSources = function() {
+ if (ol.has.POINTER) {
+ this.registerSource('native', new ol.pointer.NativeSource(this));
+ } else if (ol.has.MSPOINTER) {
+ this.registerSource('ms', new ol.pointer.MsSource(this));
+ } else {
+ var mouseSource = new ol.pointer.MouseSource(this);
+ this.registerSource('mouse', mouseSource);
+
+ if (ol.has.TOUCH) {
+ this.registerSource('touch',
+ new ol.pointer.TouchSource(this, mouseSource));
+ }
+ }
+
+ // register events on the viewport element
+ this.register_();
+};
+
+
+/**
+ * Add a new event source that will generate pointer events.
+ *
+ * @param {string} name A name for the event source
+ * @param {ol.pointer.EventSource} source The source event.
+ */
+ol.pointer.PointerEventHandler.prototype.registerSource = function(name, source) {
+ var s = source;
+ var newEvents = s.getEvents();
+
+ if (newEvents) {
+ newEvents.forEach(function(e) {
+ var handler = s.getHandlerForEvent(e);
+
+ if (handler) {
+ this.eventMap_[e] = handler.bind(s);
+ }
+ }, this);
+ this.eventSourceList_.push(s);
+ }
+};
+
+
+/**
+ * Set up the events for all registered event sources.
+ * @private
+ */
+ol.pointer.PointerEventHandler.prototype.register_ = function() {
+ var l = this.eventSourceList_.length;
+ var eventSource;
+ for (var i = 0; i < l; i++) {
+ eventSource = this.eventSourceList_[i];
+ this.addEvents_(eventSource.getEvents());
+ }
+};
+
+
+/**
+ * Remove all registered events.
+ * @private
+ */
+ol.pointer.PointerEventHandler.prototype.unregister_ = function() {
+ var l = this.eventSourceList_.length;
+ var eventSource;
+ for (var i = 0; i < l; i++) {
+ eventSource = this.eventSourceList_[i];
+ this.removeEvents_(eventSource.getEvents());
+ }
+};
+
+
+/**
+ * Calls the right handler for a new event.
+ * @private
+ * @param {Event} inEvent Browser event.
+ */
+ol.pointer.PointerEventHandler.prototype.eventHandler_ = function(inEvent) {
+ var type = inEvent.type;
+ var handler = this.eventMap_[type];
+ if (handler) {
+ handler(inEvent);
+ }
+};
+
+
+/**
+ * Setup listeners for the given events.
+ * @private
+ * @param {Array.<string>} events List of events.
+ */
+ol.pointer.PointerEventHandler.prototype.addEvents_ = function(events) {
+ events.forEach(function(eventName) {
+ ol.events.listen(this.element_, eventName, this.eventHandler_, this);
+ }, this);
+};
+
+
+/**
+ * Unregister listeners for the given events.
+ * @private
+ * @param {Array.<string>} events List of events.
+ */
+ol.pointer.PointerEventHandler.prototype.removeEvents_ = function(events) {
+ events.forEach(function(e) {
+ ol.events.unlisten(this.element_, e, this.eventHandler_, this);
+ }, this);
+};
+
+
+/**
+ * Returns a snapshot of inEvent, with writable properties.
+ *
+ * @param {Event} event Browser event.
+ * @param {Event|Touch} inEvent An event that contains
+ * properties to copy.
+ * @return {Object} An object containing shallow copies of
+ * `inEvent`'s properties.
+ */
+ol.pointer.PointerEventHandler.prototype.cloneEvent = function(event, inEvent) {
+ var eventCopy = {}, p;
+ for (var i = 0, ii = ol.pointer.CLONE_PROPS.length; i < ii; i++) {
+ p = ol.pointer.CLONE_PROPS[i][0];
+ eventCopy[p] = event[p] || inEvent[p] || ol.pointer.CLONE_PROPS[i][1];
+ }
+
+ return eventCopy;
+};
+
+
+// EVENTS
+
+
+/**
+ * Triggers a 'pointerdown' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.down = function(data, event) {
+ this.fireEvent(ol.pointer.EventType.POINTERDOWN, data, event);
+};
+
+
+/**
+ * Triggers a 'pointermove' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.move = function(data, event) {
+ this.fireEvent(ol.pointer.EventType.POINTERMOVE, data, event);
+};
+
+
+/**
+ * Triggers a 'pointerup' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.up = function(data, event) {
+ this.fireEvent(ol.pointer.EventType.POINTERUP, data, event);
+};
+
+
+/**
+ * Triggers a 'pointerenter' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.enter = function(data, event) {
+ data.bubbles = false;
+ this.fireEvent(ol.pointer.EventType.POINTERENTER, data, event);
+};
+
+
+/**
+ * Triggers a 'pointerleave' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.leave = function(data, event) {
+ data.bubbles = false;
+ this.fireEvent(ol.pointer.EventType.POINTERLEAVE, data, event);
+};
+
+
+/**
+ * Triggers a 'pointerover' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.over = function(data, event) {
+ data.bubbles = true;
+ this.fireEvent(ol.pointer.EventType.POINTEROVER, data, event);
+};
+
+
+/**
+ * Triggers a 'pointerout' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.out = function(data, event) {
+ data.bubbles = true;
+ this.fireEvent(ol.pointer.EventType.POINTEROUT, data, event);
+};
+
+
+/**
+ * Triggers a 'pointercancel' event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.cancel = function(data, event) {
+ this.fireEvent(ol.pointer.EventType.POINTERCANCEL, data, event);
+};
+
+
+/**
+ * Triggers a combination of 'pointerout' and 'pointerleave' events.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.leaveOut = function(data, event) {
+ this.out(data, event);
+ if (!this.contains_(data.target, data.relatedTarget)) {
+ this.leave(data, event);
+ }
+};
+
+
+/**
+ * Triggers a combination of 'pointerover' and 'pointerevents' events.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.enterOver = function(data, event) {
+ this.over(data, event);
+ if (!this.contains_(data.target, data.relatedTarget)) {
+ this.enter(data, event);
+ }
+};
+
+
+/**
+ * @private
+ * @param {Element} container The container element.
+ * @param {Element} contained The contained element.
+ * @return {boolean} Returns true if the container element
+ * contains the other element.
+ */
+ol.pointer.PointerEventHandler.prototype.contains_ = function(container, contained) {
+ if (!container || !contained) {
+ return false;
+ }
+ return container.contains(contained);
+};
+
+
+// EVENT CREATION AND TRACKING
+/**
+ * Creates a new Event of type `inType`, based on the information in
+ * `data`.
+ *
+ * @param {string} inType A string representing the type of event to create.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ * @return {ol.pointer.PointerEvent} A PointerEvent of type `inType`.
+ */
+ol.pointer.PointerEventHandler.prototype.makeEvent = function(inType, data, event) {
+ return new ol.pointer.PointerEvent(inType, event, data);
+};
+
+
+/**
+ * Make and dispatch an event in one call.
+ * @param {string} inType A string representing the type of event.
+ * @param {Object} data Pointer event data.
+ * @param {Event} event The event.
+ */
+ol.pointer.PointerEventHandler.prototype.fireEvent = function(inType, data, event) {
+ var e = this.makeEvent(inType, data, event);
+ this.dispatchEvent(e);
+};
+
+
+/**
+ * Creates a pointer event from a native pointer event
+ * and dispatches this event.
+ * @param {Event} event A platform event with a target.
+ */
+ol.pointer.PointerEventHandler.prototype.fireNativeEvent = function(event) {
+ var e = this.makeEvent(event.type, event, event);
+ this.dispatchEvent(e);
+};
+
+
+/**
+ * Wrap a native mouse event into a pointer event.
+ * This proxy method is required for the legacy IE support.
+ * @param {string} eventType The pointer event type.
+ * @param {Event} event The event.
+ * @return {ol.pointer.PointerEvent} The wrapped event.
+ */
+ol.pointer.PointerEventHandler.prototype.wrapMouseEvent = function(eventType, event) {
+ var pointerEvent = this.makeEvent(
+ eventType, ol.pointer.MouseSource.prepareEvent(event, this), event);
+ return pointerEvent;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.pointer.PointerEventHandler.prototype.disposeInternal = function() {
+ this.unregister_();
+ ol.events.EventTarget.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Constants for event names.
+ * @enum {string}
+ */
+ol.pointer.EventType = {
+ POINTERMOVE: 'pointermove',
+ POINTERDOWN: 'pointerdown',
+ POINTERUP: 'pointerup',
+ POINTEROVER: 'pointerover',
+ POINTEROUT: 'pointerout',
+ POINTERENTER: 'pointerenter',
+ POINTERLEAVE: 'pointerleave',
+ POINTERCANCEL: 'pointercancel'
+};
+
+
+/**
+ * Properties to copy when cloning an event, with default values.
+ * @type {Array.<Array>}
+ */
+ol.pointer.CLONE_PROPS = [
+ // MouseEvent
+ ['bubbles', false],
+ ['cancelable', false],
+ ['view', null],
+ ['detail', null],
+ ['screenX', 0],
+ ['screenY', 0],
+ ['clientX', 0],
+ ['clientY', 0],
+ ['ctrlKey', false],
+ ['altKey', false],
+ ['shiftKey', false],
+ ['metaKey', false],
+ ['button', 0],
+ ['relatedTarget', null],
+ // DOM Level 3
+ ['buttons', 0],
+ // PointerEvent
+ ['pointerId', 0],
+ ['width', 0],
+ ['height', 0],
+ ['pressure', 0],
+ ['tiltX', 0],
+ ['tiltY', 0],
+ ['pointerType', ''],
+ ['hwTimestamp', 0],
+ ['isPrimary', false],
+ // event instance
+ ['type', ''],
+ ['target', null],
+ ['currentTarget', null],
+ ['which', 0]
+];
+
+goog.provide('ol.MapBrowserEvent');
+goog.provide('ol.MapBrowserEvent.EventType');
+goog.provide('ol.MapBrowserEventHandler');
+goog.provide('ol.MapBrowserPointerEvent');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.MapEvent');
+goog.require('ol.events');
+goog.require('ol.events.EventTarget');
+goog.require('ol.events.EventType');
+goog.require('ol.pointer.PointerEvent');
+goog.require('ol.pointer.PointerEventHandler');
+
+
+/**
+ * @classdesc
+ * Events emitted as map browser events are instances of this type.
+ * See {@link ol.Map} for which events trigger a map browser event.
+ *
+ * @constructor
+ * @extends {ol.MapEvent}
+ * @implements {oli.MapBrowserEvent}
+ * @param {string} type Event type.
+ * @param {ol.Map} map Map.
+ * @param {Event} browserEvent Browser event.
+ * @param {boolean=} opt_dragging Is the map currently being dragged?
+ * @param {?olx.FrameState=} opt_frameState Frame state.
+ */
+ol.MapBrowserEvent = function(type, map, browserEvent, opt_dragging,
+ opt_frameState) {
+
+ ol.MapEvent.call(this, type, map, opt_frameState);
+
+ /**
+ * The original browser event.
+ * @const
+ * @type {Event}
+ * @api stable
+ */
+ this.originalEvent = browserEvent;
+
+ /**
+ * The pixel of the original browser event.
+ * @type {ol.Pixel}
+ * @api stable
+ */
+ this.pixel = map.getEventPixel(browserEvent);
+
+ /**
+ * The coordinate of the original browser event.
+ * @type {ol.Coordinate}
+ * @api stable
+ */
+ this.coordinate = map.getCoordinateFromPixel(this.pixel);
+
+ /**
+ * Indicates if the map is currently being dragged. Only set for
+ * `POINTERDRAG` and `POINTERMOVE` events. Default is `false`.
+ *
+ * @type {boolean}
+ * @api stable
+ */
+ this.dragging = opt_dragging !== undefined ? opt_dragging : false;
+
+};
+ol.inherits(ol.MapBrowserEvent, ol.MapEvent);
+
+
+/**
+ * Prevents the default browser action.
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/event.preventDefault
+ * @override
+ * @api stable
+ */
+ol.MapBrowserEvent.prototype.preventDefault = function() {
+ ol.MapEvent.prototype.preventDefault.call(this);
+ this.originalEvent.preventDefault();
+};
+
+
+/**
+ * Prevents further propagation of the current event.
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/event.stopPropagation
+ * @override
+ * @api stable
+ */
+ol.MapBrowserEvent.prototype.stopPropagation = function() {
+ ol.MapEvent.prototype.stopPropagation.call(this);
+ this.originalEvent.stopPropagation();
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.MapBrowserEvent}
+ * @param {string} type Event type.
+ * @param {ol.Map} map Map.
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @param {boolean=} opt_dragging Is the map currently being dragged?
+ * @param {?olx.FrameState=} opt_frameState Frame state.
+ */
+ol.MapBrowserPointerEvent = function(type, map, pointerEvent, opt_dragging,
+ opt_frameState) {
+
+ ol.MapBrowserEvent.call(this, type, map, pointerEvent.originalEvent, opt_dragging,
+ opt_frameState);
+
+ /**
+ * @const
+ * @type {ol.pointer.PointerEvent}
+ */
+ this.pointerEvent = pointerEvent;
+
+};
+ol.inherits(ol.MapBrowserPointerEvent, ol.MapBrowserEvent);
+
+
+/**
+ * @param {ol.Map} map The map with the viewport to listen to events on.
+ * @constructor
+ * @extends {ol.events.EventTarget}
+ */
+ol.MapBrowserEventHandler = function(map) {
+
+ ol.events.EventTarget.call(this);
+
+ /**
+ * This is the element that we will listen to the real events on.
+ * @type {ol.Map}
+ * @private
+ */
+ this.map_ = map;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.clickTimeoutId_ = 0;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.dragging_ = false;
+
+ /**
+ * @type {!Array.<ol.EventsKey>}
+ * @private
+ */
+ this.dragListenerKeys_ = [];
+
+ /**
+ * The most recent "down" type event (or null if none have occurred).
+ * Set on pointerdown.
+ * @type {ol.pointer.PointerEvent}
+ * @private
+ */
+ this.down_ = null;
+
+ var element = this.map_.getViewport();
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.activePointers_ = 0;
+
+ /**
+ * @type {!Object.<number, boolean>}
+ * @private
+ */
+ this.trackedTouches_ = {};
+
+ /**
+ * Event handler which generates pointer events for
+ * the viewport element.
+ *
+ * @type {ol.pointer.PointerEventHandler}
+ * @private
+ */
+ this.pointerEventHandler_ = new ol.pointer.PointerEventHandler(element);
+
+ /**
+ * Event handler which generates pointer events for
+ * the document (used when dragging).
+ *
+ * @type {ol.pointer.PointerEventHandler}
+ * @private
+ */
+ this.documentPointerEventHandler_ = null;
+
+ /**
+ * @type {?ol.EventsKey}
+ * @private
+ */
+ this.pointerdownListenerKey_ = ol.events.listen(this.pointerEventHandler_,
+ ol.pointer.EventType.POINTERDOWN,
+ this.handlePointerDown_, this);
+
+ /**
+ * @type {?ol.EventsKey}
+ * @private
+ */
+ this.relayedListenerKey_ = ol.events.listen(this.pointerEventHandler_,
+ ol.pointer.EventType.POINTERMOVE,
+ this.relayEvent_, this);
+
+};
+ol.inherits(ol.MapBrowserEventHandler, ol.events.EventTarget);
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.emulateClick_ = function(pointerEvent) {
+ var newEvent;
+ newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.CLICK, this.map_, pointerEvent);
+ this.dispatchEvent(newEvent);
+ if (this.clickTimeoutId_ !== 0) {
+ // double-click
+ ol.global.clearTimeout(this.clickTimeoutId_);
+ this.clickTimeoutId_ = 0;
+ newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.DBLCLICK, this.map_, pointerEvent);
+ this.dispatchEvent(newEvent);
+ } else {
+ // click
+ this.clickTimeoutId_ = ol.global.setTimeout(function() {
+ this.clickTimeoutId_ = 0;
+ var newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.SINGLECLICK, this.map_, pointerEvent);
+ this.dispatchEvent(newEvent);
+ }.bind(this), 250);
+ }
+};
+
+
+/**
+ * Keeps track on how many pointers are currently active.
+ *
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.updateActivePointers_ = function(pointerEvent) {
+ var event = pointerEvent;
+
+ if (event.type == ol.MapBrowserEvent.EventType.POINTERUP ||
+ event.type == ol.MapBrowserEvent.EventType.POINTERCANCEL) {
+ delete this.trackedTouches_[event.pointerId];
+ } else if (event.type == ol.MapBrowserEvent.EventType.POINTERDOWN) {
+ this.trackedTouches_[event.pointerId] = true;
+ }
+ this.activePointers_ = Object.keys(this.trackedTouches_).length;
+};
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.handlePointerUp_ = function(pointerEvent) {
+ this.updateActivePointers_(pointerEvent);
+ var newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.POINTERUP, this.map_, pointerEvent);
+ this.dispatchEvent(newEvent);
+
+ // We emulate click events on left mouse button click, touch contact, and pen
+ // contact. isMouseActionButton returns true in these cases (evt.button is set
+ // to 0).
+ // See http://www.w3.org/TR/pointerevents/#button-states
+ if (!this.dragging_ && this.isMouseActionButton_(pointerEvent)) {
+ goog.asserts.assert(this.down_, 'this.down_ must be truthy');
+ this.emulateClick_(this.down_);
+ }
+
+ goog.asserts.assert(this.activePointers_ >= 0,
+ 'this.activePointers_ should be equal to or larger than 0');
+ if (this.activePointers_ === 0) {
+ this.dragListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.dragListenerKeys_.length = 0;
+ this.dragging_ = false;
+ this.down_ = null;
+ this.documentPointerEventHandler_.dispose();
+ this.documentPointerEventHandler_ = null;
+ }
+};
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @return {boolean} If the left mouse button was pressed.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.isMouseActionButton_ = function(pointerEvent) {
+ return pointerEvent.button === 0;
+};
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.handlePointerDown_ = function(pointerEvent) {
+ this.updateActivePointers_(pointerEvent);
+ var newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.POINTERDOWN, this.map_, pointerEvent);
+ this.dispatchEvent(newEvent);
+
+ this.down_ = pointerEvent;
+
+ if (this.dragListenerKeys_.length === 0) {
+ /* Set up a pointer event handler on the `document`,
+ * which is required when the pointer is moved outside
+ * the viewport when dragging.
+ */
+ this.documentPointerEventHandler_ =
+ new ol.pointer.PointerEventHandler(document);
+
+ this.dragListenerKeys_.push(
+ ol.events.listen(this.documentPointerEventHandler_,
+ ol.MapBrowserEvent.EventType.POINTERMOVE,
+ this.handlePointerMove_, this),
+ ol.events.listen(this.documentPointerEventHandler_,
+ ol.MapBrowserEvent.EventType.POINTERUP,
+ this.handlePointerUp_, this),
+ /* Note that the listener for `pointercancel is set up on
+ * `pointerEventHandler_` and not `documentPointerEventHandler_` like
+ * the `pointerup` and `pointermove` listeners.
+ *
+ * The reason for this is the following: `TouchSource.vacuumTouches_()`
+ * issues `pointercancel` events, when there was no `touchend` for a
+ * `touchstart`. Now, let's say a first `touchstart` is registered on
+ * `pointerEventHandler_`. The `documentPointerEventHandler_` is set up.
+ * But `documentPointerEventHandler_` doesn't know about the first
+ * `touchstart`. If there is no `touchend` for the `touchstart`, we can
+ * only receive a `touchcancel` from `pointerEventHandler_`, because it is
+ * only registered there.
+ */
+ ol.events.listen(this.pointerEventHandler_,
+ ol.MapBrowserEvent.EventType.POINTERCANCEL,
+ this.handlePointerUp_, this)
+ );
+ }
+};
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.handlePointerMove_ = function(pointerEvent) {
+ // Fix IE10 on windows Surface : When you tap the tablet, it triggers
+ // multiple pointermove events between pointerdown and pointerup with
+ // the exact same coordinates of the pointerdown event. To avoid a
+ // 'false' touchmove event to be dispatched , we test if the pointer
+ // effectively moved.
+ if (this.isMoving_(pointerEvent)) {
+ this.dragging_ = true;
+ var newEvent = new ol.MapBrowserPointerEvent(
+ ol.MapBrowserEvent.EventType.POINTERDRAG, this.map_, pointerEvent,
+ this.dragging_);
+ this.dispatchEvent(newEvent);
+ }
+
+ // Some native android browser triggers mousemove events during small period
+ // of time. See: https://code.google.com/p/android/issues/detail?id=5491 or
+ // https://code.google.com/p/android/issues/detail?id=19827
+ // ex: Galaxy Tab P3110 + Android 4.1.1
+ pointerEvent.preventDefault();
+};
+
+
+/**
+ * Wrap and relay a pointer event. Note that this requires that the type
+ * string for the MapBrowserPointerEvent matches the PointerEvent type.
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.relayEvent_ = function(pointerEvent) {
+ var dragging = !!(this.down_ && this.isMoving_(pointerEvent));
+ this.dispatchEvent(new ol.MapBrowserPointerEvent(
+ pointerEvent.type, this.map_, pointerEvent, dragging));
+};
+
+
+/**
+ * @param {ol.pointer.PointerEvent} pointerEvent Pointer event.
+ * @return {boolean} Is moving.
+ * @private
+ */
+ol.MapBrowserEventHandler.prototype.isMoving_ = function(pointerEvent) {
+ return pointerEvent.clientX != this.down_.clientX ||
+ pointerEvent.clientY != this.down_.clientY;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.MapBrowserEventHandler.prototype.disposeInternal = function() {
+ if (this.relayedListenerKey_) {
+ ol.events.unlistenByKey(this.relayedListenerKey_);
+ this.relayedListenerKey_ = null;
+ }
+ if (this.pointerdownListenerKey_) {
+ ol.events.unlistenByKey(this.pointerdownListenerKey_);
+ this.pointerdownListenerKey_ = null;
+ }
+
+ this.dragListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.dragListenerKeys_.length = 0;
+
+ if (this.documentPointerEventHandler_) {
+ this.documentPointerEventHandler_.dispose();
+ this.documentPointerEventHandler_ = null;
+ }
+ if (this.pointerEventHandler_) {
+ this.pointerEventHandler_.dispose();
+ this.pointerEventHandler_ = null;
+ }
+ ol.events.EventTarget.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Constants for event names.
+ * @enum {string}
+ */
+ol.MapBrowserEvent.EventType = {
+
+ /**
+ * A true single click with no dragging and no double click. Note that this
+ * event is delayed by 250 ms to ensure that it is not a double click.
+ * @event ol.MapBrowserEvent#singleclick
+ * @api stable
+ */
+ SINGLECLICK: 'singleclick',
+
+ /**
+ * A click with no dragging. A double click will fire two of this.
+ * @event ol.MapBrowserEvent#click
+ * @api stable
+ */
+ CLICK: ol.events.EventType.CLICK,
+
+ /**
+ * A true double click, with no dragging.
+ * @event ol.MapBrowserEvent#dblclick
+ * @api stable
+ */
+ DBLCLICK: ol.events.EventType.DBLCLICK,
+
+ /**
+ * Triggered when a pointer is dragged.
+ * @event ol.MapBrowserEvent#pointerdrag
+ * @api
+ */
+ POINTERDRAG: 'pointerdrag',
+
+ /**
+ * Triggered when a pointer is moved. Note that on touch devices this is
+ * triggered when the map is panned, so is not the same as mousemove.
+ * @event ol.MapBrowserEvent#pointermove
+ * @api stable
+ */
+ POINTERMOVE: 'pointermove',
+
+ POINTERDOWN: 'pointerdown',
+ POINTERUP: 'pointerup',
+ POINTEROVER: 'pointerover',
+ POINTEROUT: 'pointerout',
+ POINTERENTER: 'pointerenter',
+ POINTERLEAVE: 'pointerleave',
+ POINTERCANCEL: 'pointercancel'
+};
+
+goog.provide('ol.layer.Base');
+goog.provide('ol.layer.LayerProperty');
+
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.math');
+goog.require('ol.object');
+goog.require('ol.source.State');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.LayerProperty = {
+ OPACITY: 'opacity',
+ VISIBLE: 'visible',
+ EXTENT: 'extent',
+ Z_INDEX: 'zIndex',
+ MAX_RESOLUTION: 'maxResolution',
+ MIN_RESOLUTION: 'minResolution',
+ SOURCE: 'source'
+};
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Note that with `ol.layer.Base` and all its subclasses, any property set in
+ * the options is set as a {@link ol.Object} property on the layer object, so
+ * is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.layer.BaseOptions} options Layer options.
+ * @api stable
+ */
+ol.layer.Base = function(options) {
+
+ ol.Object.call(this);
+
+ /**
+ * @type {Object.<string, *>}
+ */
+ var properties = ol.object.assign({}, options);
+ properties[ol.layer.LayerProperty.OPACITY] =
+ options.opacity !== undefined ? options.opacity : 1;
+ properties[ol.layer.LayerProperty.VISIBLE] =
+ options.visible !== undefined ? options.visible : true;
+ properties[ol.layer.LayerProperty.Z_INDEX] =
+ options.zIndex !== undefined ? options.zIndex : 0;
+ properties[ol.layer.LayerProperty.MAX_RESOLUTION] =
+ options.maxResolution !== undefined ? options.maxResolution : Infinity;
+ properties[ol.layer.LayerProperty.MIN_RESOLUTION] =
+ options.minResolution !== undefined ? options.minResolution : 0;
+
+ this.setProperties(properties);
+};
+ol.inherits(ol.layer.Base, ol.Object);
+
+
+/**
+ * @return {ol.LayerState} Layer state.
+ */
+ol.layer.Base.prototype.getLayerState = function() {
+ var opacity = this.getOpacity();
+ var sourceState = this.getSourceState();
+ var visible = this.getVisible();
+ var extent = this.getExtent();
+ var zIndex = this.getZIndex();
+ var maxResolution = this.getMaxResolution();
+ var minResolution = this.getMinResolution();
+ return {
+ layer: /** @type {ol.layer.Layer} */ (this),
+ opacity: ol.math.clamp(opacity, 0, 1),
+ sourceState: sourceState,
+ visible: visible,
+ managed: true,
+ extent: extent,
+ zIndex: zIndex,
+ maxResolution: maxResolution,
+ minResolution: Math.max(minResolution, 0)
+ };
+};
+
+
+/**
+ * @param {Array.<ol.layer.Layer>=} opt_array Array of layers (to be
+ * modified in place).
+ * @return {Array.<ol.layer.Layer>} Array of layers.
+ */
+ol.layer.Base.prototype.getLayersArray = goog.abstractMethod;
+
+
+/**
+ * @param {Array.<ol.LayerState>=} opt_states Optional list of layer
+ * states (to be modified in place).
+ * @return {Array.<ol.LayerState>} List of layer states.
+ */
+ol.layer.Base.prototype.getLayerStatesArray = goog.abstractMethod;
+
+
+/**
+ * Return the {@link ol.Extent extent} of the layer or `undefined` if it
+ * will be visible regardless of extent.
+ * @return {ol.Extent|undefined} The layer extent.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.getExtent = function() {
+ return /** @type {ol.Extent|undefined} */ (
+ this.get(ol.layer.LayerProperty.EXTENT));
+};
+
+
+/**
+ * Return the maximum resolution of the layer.
+ * @return {number} The maximum resolution of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.getMaxResolution = function() {
+ return /** @type {number} */ (
+ this.get(ol.layer.LayerProperty.MAX_RESOLUTION));
+};
+
+
+/**
+ * Return the minimum resolution of the layer.
+ * @return {number} The minimum resolution of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.getMinResolution = function() {
+ return /** @type {number} */ (
+ this.get(ol.layer.LayerProperty.MIN_RESOLUTION));
+};
+
+
+/**
+ * Return the opacity of the layer (between 0 and 1).
+ * @return {number} The opacity of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.getOpacity = function() {
+ return /** @type {number} */ (this.get(ol.layer.LayerProperty.OPACITY));
+};
+
+
+/**
+ * @return {ol.source.State} Source state.
+ */
+ol.layer.Base.prototype.getSourceState = goog.abstractMethod;
+
+
+/**
+ * Return the visibility of the layer (`true` or `false`).
+ * @return {boolean} The visibility of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.getVisible = function() {
+ return /** @type {boolean} */ (this.get(ol.layer.LayerProperty.VISIBLE));
+};
+
+
+/**
+ * Return the Z-index of the layer, which is used to order layers before
+ * rendering. The default Z-index is 0.
+ * @return {number} The Z-index of the layer.
+ * @observable
+ * @api
+ */
+ol.layer.Base.prototype.getZIndex = function() {
+ return /** @type {number} */ (this.get(ol.layer.LayerProperty.Z_INDEX));
+};
+
+
+/**
+ * Set the extent at which the layer is visible. If `undefined`, the layer
+ * will be visible at all extents.
+ * @param {ol.Extent|undefined} extent The extent of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.setExtent = function(extent) {
+ this.set(ol.layer.LayerProperty.EXTENT, extent);
+};
+
+
+/**
+ * Set the maximum resolution at which the layer is visible.
+ * @param {number} maxResolution The maximum resolution of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.setMaxResolution = function(maxResolution) {
+ this.set(ol.layer.LayerProperty.MAX_RESOLUTION, maxResolution);
+};
+
+
+/**
+ * Set the minimum resolution at which the layer is visible.
+ * @param {number} minResolution The minimum resolution of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.setMinResolution = function(minResolution) {
+ this.set(ol.layer.LayerProperty.MIN_RESOLUTION, minResolution);
+};
+
+
+/**
+ * Set the opacity of the layer, allowed values range from 0 to 1.
+ * @param {number} opacity The opacity of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.setOpacity = function(opacity) {
+ this.set(ol.layer.LayerProperty.OPACITY, opacity);
+};
+
+
+/**
+ * Set the visibility of the layer (`true` or `false`).
+ * @param {boolean} visible The visibility of the layer.
+ * @observable
+ * @api stable
+ */
+ol.layer.Base.prototype.setVisible = function(visible) {
+ this.set(ol.layer.LayerProperty.VISIBLE, visible);
+};
+
+
+/**
+ * Set Z-index of the layer, which is used to order layers before rendering.
+ * The default Z-index is 0.
+ * @param {number} zindex The z-index of the layer.
+ * @observable
+ * @api
+ */
+ol.layer.Base.prototype.setZIndex = function(zindex) {
+ this.set(ol.layer.LayerProperty.Z_INDEX, zindex);
+};
+
+goog.provide('ol.render.VectorContext');
+
+
+/**
+ * Context for drawing geometries. A vector context is available on render
+ * events and does not need to be constructed directly.
+ * @constructor
+ * @struct
+ * @api
+ */
+ol.render.VectorContext = function() {
+};
+
+
+/**
+ * Render a geometry.
+ *
+ * @param {ol.geom.Geometry} geometry The geometry to render.
+ */
+ol.render.VectorContext.prototype.drawGeometry = goog.abstractMethod;
+
+
+/**
+ * Set the rendering style.
+ *
+ * @param {ol.style.Style} style The rendering style.
+ */
+ol.render.VectorContext.prototype.setStyle = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.Circle} circleGeometry Circle geometry.
+ * @param {ol.Feature} feature Feature,
+ */
+ol.render.VectorContext.prototype.drawCircle = goog.abstractMethod;
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {ol.style.Style} style Style.
+ */
+ol.render.VectorContext.prototype.drawFeature = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.GeometryCollection} geometryCollectionGeometry Geometry
+ * collection.
+ * @param {ol.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawGeometryCollection = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.LineString|ol.render.Feature} lineStringGeometry Line
+ * string geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawLineString = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.MultiLineString|ol.render.Feature} multiLineStringGeometry
+ * MultiLineString geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawMultiLineString = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.MultiPoint|ol.render.Feature} multiPointGeometry MultiPoint
+ * geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawMultiPoint = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.MultiPolygon} multiPolygonGeometry MultiPolygon geometry.
+ * @param {ol.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawMultiPolygon = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.Point|ol.render.Feature} pointGeometry Point geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawPoint = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.Polygon|ol.render.Feature} polygonGeometry Polygon
+ * geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawPolygon = goog.abstractMethod;
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.VectorContext.prototype.drawText = goog.abstractMethod;
+
+
+/**
+ * @param {ol.style.Fill} fillStyle Fill style.
+ * @param {ol.style.Stroke} strokeStyle Stroke style.
+ */
+ol.render.VectorContext.prototype.setFillStrokeStyle = goog.abstractMethod;
+
+
+/**
+ * @param {ol.style.Image} imageStyle Image style.
+ */
+ol.render.VectorContext.prototype.setImageStyle = goog.abstractMethod;
+
+
+/**
+ * @param {ol.style.Text} textStyle Text style.
+ */
+ol.render.VectorContext.prototype.setTextStyle = goog.abstractMethod;
+
+goog.provide('ol.render.Event');
+goog.provide('ol.render.EventType');
+
+goog.require('ol.events.Event');
+goog.require('ol.render.VectorContext');
+
+
+/**
+ * @enum {string}
+ */
+ol.render.EventType = {
+ /**
+ * @event ol.render.Event#postcompose
+ * @api
+ */
+ POSTCOMPOSE: 'postcompose',
+ /**
+ * @event ol.render.Event#precompose
+ * @api
+ */
+ PRECOMPOSE: 'precompose',
+ /**
+ * @event ol.render.Event#render
+ * @api
+ */
+ RENDER: 'render'
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.render.Event}
+ * @param {ol.render.EventType} type Type.
+ * @param {Object=} opt_target Target.
+ * @param {ol.render.VectorContext=} opt_vectorContext Vector context.
+ * @param {olx.FrameState=} opt_frameState Frame state.
+ * @param {?CanvasRenderingContext2D=} opt_context Context.
+ * @param {?ol.webgl.Context=} opt_glContext WebGL Context.
+ */
+ol.render.Event = function(
+ type, opt_target, opt_vectorContext, opt_frameState, opt_context,
+ opt_glContext) {
+
+ ol.events.Event.call(this, type, opt_target);
+
+ /**
+ * For canvas, this is an instance of {@link ol.render.canvas.Immediate}.
+ * @type {ol.render.VectorContext|undefined}
+ * @api
+ */
+ this.vectorContext = opt_vectorContext;
+
+ /**
+ * An object representing the current render frame state.
+ * @type {olx.FrameState|undefined}
+ * @api
+ */
+ this.frameState = opt_frameState;
+
+ /**
+ * Canvas context. Only available when a Canvas renderer is used, null
+ * otherwise.
+ * @type {CanvasRenderingContext2D|null|undefined}
+ * @api
+ */
+ this.context = opt_context;
+
+ /**
+ * WebGL context. Only available when a WebGL renderer is used, null
+ * otherwise.
+ * @type {ol.webgl.Context|null|undefined}
+ * @api
+ */
+ this.glContext = opt_glContext;
+
+};
+ol.inherits(ol.render.Event, ol.events.Event);
+
+goog.provide('ol.layer.Layer');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.layer.Base');
+goog.require('ol.layer.LayerProperty');
+goog.require('ol.object');
+goog.require('ol.render.EventType');
+goog.require('ol.source.State');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * A visual representation of raster or vector map data.
+ * Layers group together those properties that pertain to how the data is to be
+ * displayed, irrespective of the source of that data.
+ *
+ * Layers are usually added to a map with {@link ol.Map#addLayer}. Components
+ * like {@link ol.interaction.Select} use unmanaged layers internally. These
+ * unmanaged layers are associated with the map using
+ * {@link ol.layer.Layer#setMap} instead.
+ *
+ * A generic `change` event is fired when the state of the source changes.
+ *
+ * @constructor
+ * @extends {ol.layer.Base}
+ * @fires ol.render.Event
+ * @param {olx.layer.LayerOptions} options Layer options.
+ * @api stable
+ */
+ol.layer.Layer = function(options) {
+
+ var baseOptions = ol.object.assign({}, options);
+ delete baseOptions.source;
+
+ ol.layer.Base.call(this, /** @type {olx.layer.BaseOptions} */ (baseOptions));
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.mapPrecomposeKey_ = null;
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.mapRenderKey_ = null;
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.sourceChangeKey_ = null;
+
+ if (options.map) {
+ this.setMap(options.map);
+ }
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.layer.LayerProperty.SOURCE),
+ this.handleSourcePropertyChange_, this);
+
+ var source = options.source ? options.source : null;
+ this.setSource(source);
+};
+ol.inherits(ol.layer.Layer, ol.layer.Base);
+
+
+/**
+ * Return `true` if the layer is visible, and if the passed resolution is
+ * between the layer's minResolution and maxResolution. The comparison is
+ * inclusive for `minResolution` and exclusive for `maxResolution`.
+ * @param {ol.LayerState} layerState Layer state.
+ * @param {number} resolution Resolution.
+ * @return {boolean} The layer is visible at the given resolution.
+ */
+ol.layer.Layer.visibleAtResolution = function(layerState, resolution) {
+ return layerState.visible && resolution >= layerState.minResolution &&
+ resolution < layerState.maxResolution;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Layer.prototype.getLayersArray = function(opt_array) {
+ var array = opt_array ? opt_array : [];
+ array.push(this);
+ return array;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Layer.prototype.getLayerStatesArray = function(opt_states) {
+ var states = opt_states ? opt_states : [];
+ states.push(this.getLayerState());
+ return states;
+};
+
+
+/**
+ * Get the layer source.
+ * @return {ol.source.Source} The layer source (or `null` if not yet set).
+ * @observable
+ * @api stable
+ */
+ol.layer.Layer.prototype.getSource = function() {
+ var source = this.get(ol.layer.LayerProperty.SOURCE);
+ return /** @type {ol.source.Source} */ (source) || null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Layer.prototype.getSourceState = function() {
+ var source = this.getSource();
+ return !source ? ol.source.State.UNDEFINED : source.getState();
+};
+
+
+/**
+ * @private
+ */
+ol.layer.Layer.prototype.handleSourceChange_ = function() {
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.layer.Layer.prototype.handleSourcePropertyChange_ = function() {
+ if (this.sourceChangeKey_) {
+ ol.events.unlistenByKey(this.sourceChangeKey_);
+ this.sourceChangeKey_ = null;
+ }
+ var source = this.getSource();
+ if (source) {
+ this.sourceChangeKey_ = ol.events.listen(source,
+ ol.events.EventType.CHANGE, this.handleSourceChange_, this);
+ }
+ this.changed();
+};
+
+
+/**
+ * Sets the layer to be rendered on top of other layers on a map. The map will
+ * not manage this layer in its layers collection, and the callback in
+ * {@link ol.Map#forEachLayerAtPixel} will receive `null` as layer. This
+ * is useful for temporary layers. To remove an unmanaged layer from the map,
+ * use `#setMap(null)`.
+ *
+ * To add the layer to a map and have it managed by the map, use
+ * {@link ol.Map#addLayer} instead.
+ * @param {ol.Map} map Map.
+ * @api
+ */
+ol.layer.Layer.prototype.setMap = function(map) {
+ if (this.mapPrecomposeKey_) {
+ ol.events.unlistenByKey(this.mapPrecomposeKey_);
+ this.mapPrecomposeKey_ = null;
+ }
+ if (!map) {
+ this.changed();
+ }
+ if (this.mapRenderKey_) {
+ ol.events.unlistenByKey(this.mapRenderKey_);
+ this.mapRenderKey_ = null;
+ }
+ if (map) {
+ this.mapPrecomposeKey_ = ol.events.listen(
+ map, ol.render.EventType.PRECOMPOSE, function(evt) {
+ var layerState = this.getLayerState();
+ layerState.managed = false;
+ layerState.zIndex = Infinity;
+ evt.frameState.layerStatesArray.push(layerState);
+ evt.frameState.layerStates[goog.getUid(this)] = layerState;
+ }, this);
+ this.mapRenderKey_ = ol.events.listen(
+ this, ol.events.EventType.CHANGE, map.render, map);
+ this.changed();
+ }
+};
+
+
+/**
+ * Set the layer source.
+ * @param {ol.source.Source} source The layer source.
+ * @observable
+ * @api stable
+ */
+ol.layer.Layer.prototype.setSource = function(source) {
+ this.set(ol.layer.LayerProperty.SOURCE, source);
+};
+
+goog.provide('ol.ImageBase');
+goog.provide('ol.ImageState');
+
+goog.require('goog.asserts');
+goog.require('ol.events.EventTarget');
+goog.require('ol.events.EventType');
+goog.require('ol.Attribution');
+
+
+/**
+ * @enum {number}
+ */
+ol.ImageState = {
+ IDLE: 0,
+ LOADING: 1,
+ LOADED: 2,
+ ERROR: 3
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.events.EventTarget}
+ * @param {ol.Extent} extent Extent.
+ * @param {number|undefined} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.ImageState} state State.
+ * @param {Array.<ol.Attribution>} attributions Attributions.
+ */
+ol.ImageBase = function(extent, resolution, pixelRatio, state, attributions) {
+
+ ol.events.EventTarget.call(this);
+
+ /**
+ * @private
+ * @type {Array.<ol.Attribution>}
+ */
+ this.attributions_ = attributions;
+
+ /**
+ * @protected
+ * @type {ol.Extent}
+ */
+ this.extent = extent;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.pixelRatio_ = pixelRatio;
+
+ /**
+ * @protected
+ * @type {number|undefined}
+ */
+ this.resolution = resolution;
+
+ /**
+ * @protected
+ * @type {ol.ImageState}
+ */
+ this.state = state;
+
+};
+ol.inherits(ol.ImageBase, ol.events.EventTarget);
+
+
+/**
+ * @protected
+ */
+ol.ImageBase.prototype.changed = function() {
+ this.dispatchEvent(ol.events.EventType.CHANGE);
+};
+
+
+/**
+ * @return {Array.<ol.Attribution>} Attributions.
+ */
+ol.ImageBase.prototype.getAttributions = function() {
+ return this.attributions_;
+};
+
+
+/**
+ * @return {ol.Extent} Extent.
+ */
+ol.ImageBase.prototype.getExtent = function() {
+ return this.extent;
+};
+
+
+/**
+ * @param {Object=} opt_context Object.
+ * @return {HTMLCanvasElement|Image|HTMLVideoElement} Image.
+ */
+ol.ImageBase.prototype.getImage = goog.abstractMethod;
+
+
+/**
+ * @return {number} PixelRatio.
+ */
+ol.ImageBase.prototype.getPixelRatio = function() {
+ return this.pixelRatio_;
+};
+
+
+/**
+ * @return {number} Resolution.
+ */
+ol.ImageBase.prototype.getResolution = function() {
+ goog.asserts.assert(this.resolution !== undefined, 'resolution not yet set');
+ return this.resolution;
+};
+
+
+/**
+ * @return {ol.ImageState} State.
+ */
+ol.ImageBase.prototype.getState = function() {
+ return this.state;
+};
+
+
+/**
+ * Load not yet loaded URI.
+ */
+ol.ImageBase.prototype.load = goog.abstractMethod;
+
+goog.provide('ol.vec.Mat4');
+goog.provide('ol.vec.Mat4.Number');
+
+goog.require('goog.vec.Mat4');
+
+
+/**
+ * A alias for the goog.vec.Number type.
+ * @typedef {goog.vec.Number}
+ */
+ol.vec.Mat4.Number;
+
+
+/**
+ * @param {!goog.vec.Mat4.Number} mat Matrix.
+ * @param {number} translateX1 Translate X1.
+ * @param {number} translateY1 Translate Y1.
+ * @param {number} scaleX Scale X.
+ * @param {number} scaleY Scale Y.
+ * @param {number} rotation Rotation.
+ * @param {number} translateX2 Translate X2.
+ * @param {number} translateY2 Translate Y2.
+ * @return {!goog.vec.Mat4.Number} Matrix.
+ */
+ol.vec.Mat4.makeTransform2D = function(mat, translateX1, translateY1,
+ scaleX, scaleY, rotation, translateX2, translateY2) {
+ goog.vec.Mat4.makeIdentity(mat);
+ if (translateX1 !== 0 || translateY1 !== 0) {
+ goog.vec.Mat4.translate(mat, translateX1, translateY1, 0);
+ }
+ if (scaleX != 1 || scaleY != 1) {
+ goog.vec.Mat4.scale(mat, scaleX, scaleY, 1);
+ }
+ if (rotation !== 0) {
+ goog.vec.Mat4.rotateZ(mat, rotation);
+ }
+ if (translateX2 !== 0 || translateY2 !== 0) {
+ goog.vec.Mat4.translate(mat, translateX2, translateY2, 0);
+ }
+ return mat;
+};
+
+
+/**
+ * Returns true if mat1 and mat2 represent the same 2D transformation.
+ * @param {goog.vec.Mat4.Number} mat1 Matrix 1.
+ * @param {goog.vec.Mat4.Number} mat2 Matrix 2.
+ * @return {boolean} Equal 2D.
+ */
+ol.vec.Mat4.equals2D = function(mat1, mat2) {
+ return (
+ goog.vec.Mat4.getElement(mat1, 0, 0) ==
+ goog.vec.Mat4.getElement(mat2, 0, 0) &&
+ goog.vec.Mat4.getElement(mat1, 1, 0) ==
+ goog.vec.Mat4.getElement(mat2, 1, 0) &&
+ goog.vec.Mat4.getElement(mat1, 0, 1) ==
+ goog.vec.Mat4.getElement(mat2, 0, 1) &&
+ goog.vec.Mat4.getElement(mat1, 1, 1) ==
+ goog.vec.Mat4.getElement(mat2, 1, 1) &&
+ goog.vec.Mat4.getElement(mat1, 0, 3) ==
+ goog.vec.Mat4.getElement(mat2, 0, 3) &&
+ goog.vec.Mat4.getElement(mat1, 1, 3) ==
+ goog.vec.Mat4.getElement(mat2, 1, 3));
+};
+
+
+/**
+ * Transforms the given vector with the given matrix storing the resulting,
+ * transformed vector into resultVec. The input vector is multiplied against the
+ * upper 2x4 matrix omitting the projective component.
+ *
+ * @param {goog.vec.Mat4.Number} mat The matrix supplying the transformation.
+ * @param {Array.<number>} vec The 3 element vector to transform.
+ * @param {Array.<number>} resultVec The 3 element vector to receive the results
+ * (may be vec).
+ * @return {Array.<number>} return resultVec so that operations can be
+ * chained together.
+ */
+ol.vec.Mat4.multVec2 = function(mat, vec, resultVec) {
+ var m00 = goog.vec.Mat4.getElement(mat, 0, 0);
+ var m10 = goog.vec.Mat4.getElement(mat, 1, 0);
+ var m01 = goog.vec.Mat4.getElement(mat, 0, 1);
+ var m11 = goog.vec.Mat4.getElement(mat, 1, 1);
+ var m03 = goog.vec.Mat4.getElement(mat, 0, 3);
+ var m13 = goog.vec.Mat4.getElement(mat, 1, 3);
+ var x = vec[0], y = vec[1];
+ resultVec[0] = m00 * x + m01 * y + m03;
+ resultVec[1] = m10 * x + m11 * y + m13;
+ return resultVec;
+};
+
+goog.provide('ol.renderer.Layer');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.functions');
+goog.require('ol.ImageState');
+goog.require('ol.Observable');
+goog.require('ol.TileRange');
+goog.require('ol.TileState');
+goog.require('ol.layer.Layer');
+goog.require('ol.source.Source');
+goog.require('ol.source.State');
+goog.require('ol.source.Tile');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.Observable}
+ * @param {ol.layer.Layer} layer Layer.
+ * @struct
+ */
+ol.renderer.Layer = function(layer) {
+
+ ol.Observable.call(this);
+
+ /**
+ * @private
+ * @type {ol.layer.Layer}
+ */
+ this.layer_ = layer;
+
+
+};
+ol.inherits(ol.renderer.Layer, ol.Observable);
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {function(this: S, (ol.Feature|ol.render.Feature), ol.layer.Layer): T}
+ * callback Feature callback.
+ * @param {S} thisArg Value to use as `this` when executing `callback`.
+ * @return {T|undefined} Callback result.
+ * @template S,T
+ */
+ol.renderer.Layer.prototype.forEachFeatureAtCoordinate = ol.nullFunction;
+
+
+/**
+ * @param {ol.Pixel} pixel Pixel.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {function(this: S, ol.layer.Layer): T} callback Layer callback.
+ * @param {S} thisArg Value to use as `this` when executing `callback`.
+ * @return {T|undefined} Callback result.
+ * @template S,T
+ */
+ol.renderer.Layer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
+ var coordinate = pixel.slice();
+ ol.vec.Mat4.multVec2(
+ frameState.pixelToCoordinateMatrix, coordinate, coordinate);
+
+ var hasFeature = this.forEachFeatureAtCoordinate(
+ coordinate, frameState, ol.functions.TRUE, this);
+
+ if (hasFeature) {
+ return callback.call(thisArg, this.layer_);
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {olx.FrameState} frameState Frame state.
+ * @return {boolean} Is there a feature at the given coordinate?
+ */
+ol.renderer.Layer.prototype.hasFeatureAtCoordinate = ol.functions.FALSE;
+
+
+/**
+ * Create a function that adds loaded tiles to the tile lookup.
+ * @param {ol.source.Tile} source Tile source.
+ * @param {ol.proj.Projection} projection Projection of the tiles.
+ * @param {Object.<number, Object.<string, ol.Tile>>} tiles Lookup of loaded
+ * tiles by zoom level.
+ * @return {function(number, ol.TileRange):boolean} A function that can be
+ * called with a zoom level and a tile range to add loaded tiles to the
+ * lookup.
+ * @protected
+ */
+ol.renderer.Layer.prototype.createLoadedTileFinder = function(source, projection, tiles) {
+ return (
+ /**
+ * @param {number} zoom Zoom level.
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} The tile range is fully loaded.
+ */
+ function(zoom, tileRange) {
+ function callback(tile) {
+ if (!tiles[zoom]) {
+ tiles[zoom] = {};
+ }
+ tiles[zoom][tile.tileCoord.toString()] = tile;
+ }
+ return source.forEachLoadedTile(projection, zoom, tileRange, callback);
+ });
+};
+
+
+/**
+ * @return {ol.layer.Layer} Layer.
+ */
+ol.renderer.Layer.prototype.getLayer = function() {
+ return this.layer_;
+};
+
+
+/**
+ * Handle changes in image state.
+ * @param {ol.events.Event} event Image change event.
+ * @private
+ */
+ol.renderer.Layer.prototype.handleImageChange_ = function(event) {
+ var image = /** @type {ol.Image} */ (event.target);
+ if (image.getState() === ol.ImageState.LOADED) {
+ this.renderIfReadyAndVisible();
+ }
+};
+
+
+/**
+ * Load the image if not already loaded, and register the image change
+ * listener if needed.
+ * @param {ol.ImageBase} image Image.
+ * @return {boolean} `true` if the image is already loaded, `false`
+ * otherwise.
+ * @protected
+ */
+ol.renderer.Layer.prototype.loadImage = function(image) {
+ var imageState = image.getState();
+ if (imageState != ol.ImageState.LOADED &&
+ imageState != ol.ImageState.ERROR) {
+ // the image is either "idle" or "loading", register the change
+ // listener (a noop if the listener was already registered)
+ goog.asserts.assert(imageState == ol.ImageState.IDLE ||
+ imageState == ol.ImageState.LOADING,
+ 'imageState is "idle" or "loading"');
+ ol.events.listen(image, ol.events.EventType.CHANGE,
+ this.handleImageChange_, this);
+ }
+ if (imageState == ol.ImageState.IDLE) {
+ image.load();
+ imageState = image.getState();
+ goog.asserts.assert(imageState == ol.ImageState.LOADING ||
+ imageState == ol.ImageState.LOADED,
+ 'imageState is "loading" or "loaded"');
+ }
+ return imageState == ol.ImageState.LOADED;
+};
+
+
+/**
+ * @protected
+ */
+ol.renderer.Layer.prototype.renderIfReadyAndVisible = function() {
+ var layer = this.getLayer();
+ if (layer.getVisible() && layer.getSourceState() == ol.source.State.READY) {
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.source.Tile} tileSource Tile source.
+ * @protected
+ */
+ol.renderer.Layer.prototype.scheduleExpireCache = function(frameState, tileSource) {
+ if (tileSource.canExpireCache()) {
+ /**
+ * @param {ol.source.Tile} tileSource Tile source.
+ * @param {ol.Map} map Map.
+ * @param {olx.FrameState} frameState Frame state.
+ */
+ var postRenderFunction = function(tileSource, map, frameState) {
+ var tileSourceKey = goog.getUid(tileSource).toString();
+ tileSource.expireCache(frameState.viewState.projection,
+ frameState.usedTiles[tileSourceKey]);
+ }.bind(null, tileSource);
+
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (postRenderFunction)
+ );
+ }
+};
+
+
+/**
+ * @param {Object.<string, ol.Attribution>} attributionsSet Attributions
+ * set (target).
+ * @param {Array.<ol.Attribution>} attributions Attributions (source).
+ * @protected
+ */
+ol.renderer.Layer.prototype.updateAttributions = function(attributionsSet, attributions) {
+ if (attributions) {
+ var attribution, i, ii;
+ for (i = 0, ii = attributions.length; i < ii; ++i) {
+ attribution = attributions[i];
+ attributionsSet[goog.getUid(attribution).toString()] = attribution;
+ }
+ }
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.source.Source} source Source.
+ * @protected
+ */
+ol.renderer.Layer.prototype.updateLogos = function(frameState, source) {
+ var logo = source.getLogo();
+ if (logo !== undefined) {
+ if (typeof logo === 'string') {
+ frameState.logos[logo] = '';
+ } else if (goog.isObject(logo)) {
+ goog.asserts.assertString(logo.href, 'logo.href is a string');
+ goog.asserts.assertString(logo.src, 'logo.src is a string');
+ frameState.logos[logo.src] = logo.href;
+ }
+ }
+};
+
+
+/**
+ * @param {Object.<string, Object.<string, ol.TileRange>>} usedTiles Used tiles.
+ * @param {ol.source.Tile} tileSource Tile source.
+ * @param {number} z Z.
+ * @param {ol.TileRange} tileRange Tile range.
+ * @protected
+ */
+ol.renderer.Layer.prototype.updateUsedTiles = function(usedTiles, tileSource, z, tileRange) {
+ // FIXME should we use tilesToDrawByZ instead?
+ var tileSourceKey = goog.getUid(tileSource).toString();
+ var zKey = z.toString();
+ if (tileSourceKey in usedTiles) {
+ if (zKey in usedTiles[tileSourceKey]) {
+ usedTiles[tileSourceKey][zKey].extend(tileRange);
+ } else {
+ usedTiles[tileSourceKey][zKey] = tileRange;
+ }
+ } else {
+ usedTiles[tileSourceKey] = {};
+ usedTiles[tileSourceKey][zKey] = tileRange;
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {ol.Size} size Size.
+ * @protected
+ * @return {ol.Coordinate} Snapped center.
+ */
+ol.renderer.Layer.prototype.snapCenterToPixel = function(center, resolution, size) {
+ return [
+ resolution * (Math.round(center[0] / resolution) + (size[0] % 2) / 2),
+ resolution * (Math.round(center[1] / resolution) + (size[1] % 2) / 2)
+ ];
+};
+
+
+/**
+ * Manage tile pyramid.
+ * This function performs a number of functions related to the tiles at the
+ * current zoom and lower zoom levels:
+ * - registers idle tiles in frameState.wantedTiles so that they are not
+ * discarded by the tile queue
+ * - enqueues missing tiles
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.source.Tile} tileSource Tile source.
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} currentZ Current Z.
+ * @param {number} preload Load low resolution tiles up to 'preload' levels.
+ * @param {function(this: T, ol.Tile)=} opt_tileCallback Tile callback.
+ * @param {T=} opt_this Object to use as `this` in `opt_tileCallback`.
+ * @protected
+ * @template T
+ */
+ol.renderer.Layer.prototype.manageTilePyramid = function(
+ frameState, tileSource, tileGrid, pixelRatio, projection, extent,
+ currentZ, preload, opt_tileCallback, opt_this) {
+ var tileSourceKey = goog.getUid(tileSource).toString();
+ if (!(tileSourceKey in frameState.wantedTiles)) {
+ frameState.wantedTiles[tileSourceKey] = {};
+ }
+ var wantedTiles = frameState.wantedTiles[tileSourceKey];
+ var tileQueue = frameState.tileQueue;
+ var minZoom = tileGrid.getMinZoom();
+ var tile, tileRange, tileResolution, x, y, z;
+ for (z = currentZ; z >= minZoom; --z) {
+ tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z, tileRange);
+ tileResolution = tileGrid.getResolution(z);
+ for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
+ for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
+ if (currentZ - z <= preload) {
+ tile = tileSource.getTile(z, x, y, pixelRatio, projection);
+ if (tile.getState() == ol.TileState.IDLE) {
+ wantedTiles[tile.tileCoord.toString()] = true;
+ if (!tileQueue.isKeyQueued(tile.getKey())) {
+ tileQueue.enqueue([tile, tileSourceKey,
+ tileGrid.getTileCoordCenter(tile.tileCoord), tileResolution]);
+ }
+ }
+ if (opt_tileCallback !== undefined) {
+ opt_tileCallback.call(opt_this, tile);
+ }
+ } else {
+ tileSource.useTile(z, x, y, projection);
+ }
+ }
+ }
+ }
+};
+
+goog.provide('ol.style.Image');
+goog.provide('ol.style.ImageState');
+
+
+/**
+ * @enum {number}
+ */
+ol.style.ImageState = {
+ IDLE: 0,
+ LOADING: 1,
+ LOADED: 2,
+ ERROR: 3
+};
+
+
+/**
+ * @classdesc
+ * A base class used for creating subclasses and not instantiated in
+ * apps. Base class for {@link ol.style.Icon}, {@link ol.style.Circle} and
+ * {@link ol.style.RegularShape}.
+ *
+ * @constructor
+ * @param {ol.StyleImageOptions} options Options.
+ * @api
+ */
+ol.style.Image = function(options) {
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.opacity_ = options.opacity;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.rotateWithView_ = options.rotateWithView;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.rotation_ = options.rotation;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.scale_ = options.scale;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.snapToPixel_ = options.snapToPixel;
+
+};
+
+
+/**
+ * Get the symbolizer opacity.
+ * @return {number} Opacity.
+ * @api
+ */
+ol.style.Image.prototype.getOpacity = function() {
+ return this.opacity_;
+};
+
+
+/**
+ * Determine whether the symbolizer rotates with the map.
+ * @return {boolean} Rotate with map.
+ * @api
+ */
+ol.style.Image.prototype.getRotateWithView = function() {
+ return this.rotateWithView_;
+};
+
+
+/**
+ * Get the symoblizer rotation.
+ * @return {number} Rotation.
+ * @api
+ */
+ol.style.Image.prototype.getRotation = function() {
+ return this.rotation_;
+};
+
+
+/**
+ * Get the symbolizer scale.
+ * @return {number} Scale.
+ * @api
+ */
+ol.style.Image.prototype.getScale = function() {
+ return this.scale_;
+};
+
+
+/**
+ * Determine whether the symbolizer should be snapped to a pixel.
+ * @return {boolean} The symbolizer should snap to a pixel.
+ * @api
+ */
+ol.style.Image.prototype.getSnapToPixel = function() {
+ return this.snapToPixel_;
+};
+
+
+/**
+ * Get the anchor point. The anchor determines the center point for the
+ * symbolizer. Its units are determined by `anchorXUnits` and `anchorYUnits`.
+ * @function
+ * @return {Array.<number>} Anchor.
+ */
+ol.style.Image.prototype.getAnchor = goog.abstractMethod;
+
+
+/**
+ * Get the image element for the symbolizer.
+ * @function
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {HTMLCanvasElement|HTMLVideoElement|Image} Image element.
+ */
+ol.style.Image.prototype.getImage = goog.abstractMethod;
+
+
+/**
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {HTMLCanvasElement|HTMLVideoElement|Image} Image element.
+ */
+ol.style.Image.prototype.getHitDetectionImage = goog.abstractMethod;
+
+
+/**
+ * @return {ol.style.ImageState} Image state.
+ */
+ol.style.Image.prototype.getImageState = goog.abstractMethod;
+
+
+/**
+ * @return {ol.Size} Image size.
+ */
+ol.style.Image.prototype.getImageSize = goog.abstractMethod;
+
+
+/**
+ * @return {ol.Size} Size of the hit-detection image.
+ */
+ol.style.Image.prototype.getHitDetectionImageSize = goog.abstractMethod;
+
+
+/**
+ * Get the origin of the symbolizer.
+ * @function
+ * @return {Array.<number>} Origin.
+ */
+ol.style.Image.prototype.getOrigin = goog.abstractMethod;
+
+
+/**
+ * Get the size of the symbolizer (in pixels).
+ * @function
+ * @return {ol.Size} Size.
+ */
+ol.style.Image.prototype.getSize = goog.abstractMethod;
+
+
+/**
+ * Set the opacity.
+ *
+ * @param {number} opacity Opacity.
+ * @api
+ */
+ol.style.Image.prototype.setOpacity = function(opacity) {
+ this.opacity_ = opacity;
+};
+
+
+/**
+ * Set whether to rotate the style with the view.
+ *
+ * @param {boolean} rotateWithView Rotate with map.
+ */
+ol.style.Image.prototype.setRotateWithView = function(rotateWithView) {
+ this.rotateWithView_ = rotateWithView;
+};
+
+
+/**
+ * Set the rotation.
+ *
+ * @param {number} rotation Rotation.
+ * @api
+ */
+ol.style.Image.prototype.setRotation = function(rotation) {
+ this.rotation_ = rotation;
+};
+
+
+/**
+ * Set the scale.
+ *
+ * @param {number} scale Scale.
+ * @api
+ */
+ol.style.Image.prototype.setScale = function(scale) {
+ this.scale_ = scale;
+};
+
+
+/**
+ * Set whether to snap the image to the closest pixel.
+ *
+ * @param {boolean} snapToPixel Snap to pixel?
+ */
+ol.style.Image.prototype.setSnapToPixel = function(snapToPixel) {
+ this.snapToPixel_ = snapToPixel;
+};
+
+
+/**
+ * @param {function(this: T, ol.events.Event)} listener Listener function.
+ * @param {T} thisArg Value to use as `this` when executing `listener`.
+ * @return {ol.EventsKey|undefined} Listener key.
+ * @template T
+ */
+ol.style.Image.prototype.listenImageChange = goog.abstractMethod;
+
+
+/**
+ * Load not yet loaded URI.
+ */
+ol.style.Image.prototype.load = goog.abstractMethod;
+
+
+/**
+ * @param {function(this: T, ol.events.Event)} listener Listener function.
+ * @param {T} thisArg Value to use as `this` when executing `listener`.
+ * @template T
+ */
+ol.style.Image.prototype.unlistenImageChange = goog.abstractMethod;
+
+goog.provide('ol.style.Icon');
+goog.provide('ol.style.IconAnchorUnits');
+goog.provide('ol.style.IconImageCache');
+goog.provide('ol.style.IconOrigin');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventTarget');
+goog.require('ol.events.EventType');
+goog.require('ol.color');
+goog.require('ol.dom');
+goog.require('ol.style.Image');
+goog.require('ol.style.ImageState');
+
+
+/**
+ * Icon anchor units. One of 'fraction', 'pixels'.
+ * @enum {string}
+ */
+ol.style.IconAnchorUnits = {
+ FRACTION: 'fraction',
+ PIXELS: 'pixels'
+};
+
+
+/**
+ * Icon origin. One of 'bottom-left', 'bottom-right', 'top-left', 'top-right'.
+ * @enum {string}
+ */
+ol.style.IconOrigin = {
+ BOTTOM_LEFT: 'bottom-left',
+ BOTTOM_RIGHT: 'bottom-right',
+ TOP_LEFT: 'top-left',
+ TOP_RIGHT: 'top-right'
+};
+
+
+/**
+ * @classdesc
+ * Set icon style for vector features.
+ *
+ * @constructor
+ * @param {olx.style.IconOptions=} opt_options Options.
+ * @extends {ol.style.Image}
+ * @api
+ */
+ol.style.Icon = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.anchor_ = options.anchor !== undefined ? options.anchor : [0.5, 0.5];
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.normalizedAnchor_ = null;
+
+ /**
+ * @private
+ * @type {ol.style.IconOrigin}
+ */
+ this.anchorOrigin_ = options.anchorOrigin !== undefined ?
+ options.anchorOrigin : ol.style.IconOrigin.TOP_LEFT;
+
+ /**
+ * @private
+ * @type {ol.style.IconAnchorUnits}
+ */
+ this.anchorXUnits_ = options.anchorXUnits !== undefined ?
+ options.anchorXUnits : ol.style.IconAnchorUnits.FRACTION;
+
+ /**
+ * @private
+ * @type {ol.style.IconAnchorUnits}
+ */
+ this.anchorYUnits_ = options.anchorYUnits !== undefined ?
+ options.anchorYUnits : ol.style.IconAnchorUnits.FRACTION;
+
+ /**
+ * @type {?string}
+ */
+ var crossOrigin =
+ options.crossOrigin !== undefined ? options.crossOrigin : null;
+
+ /**
+ * @type {Image|HTMLCanvasElement}
+ */
+ var image = options.img !== undefined ? options.img : null;
+
+ /**
+ * @type {ol.Size}
+ */
+ var imgSize = options.imgSize !== undefined ? options.imgSize : null;
+
+ /**
+ * @type {string|undefined}
+ */
+ var src = options.src;
+
+ goog.asserts.assert(!(src !== undefined && image),
+ 'image and src can not provided at the same time');
+ goog.asserts.assert(
+ !image || (image && imgSize),
+ 'imgSize must be set when image is provided');
+
+ if ((src === undefined || src.length === 0) && image) {
+ src = image.src || goog.getUid(image).toString();
+ }
+ goog.asserts.assert(src !== undefined && src.length > 0,
+ 'must provide a defined and non-empty src or image');
+
+ /**
+ * @type {ol.style.ImageState}
+ */
+ var imageState = options.src !== undefined ?
+ ol.style.ImageState.IDLE : ol.style.ImageState.LOADED;
+
+ /**
+ * @type {ol.Color}
+ */
+ var color = options.color !== undefined ? ol.color.asArray(options.color) :
+ null;
+
+ /**
+ * @private
+ * @type {ol.style.IconImage_}
+ */
+ this.iconImage_ = ol.style.IconImage_.get(
+ image, src, imgSize, crossOrigin, imageState, color);
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.offset_ = options.offset !== undefined ? options.offset : [0, 0];
+
+ /**
+ * @private
+ * @type {ol.style.IconOrigin}
+ */
+ this.offsetOrigin_ = options.offsetOrigin !== undefined ?
+ options.offsetOrigin : ol.style.IconOrigin.TOP_LEFT;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.origin_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.size_ = options.size !== undefined ? options.size : null;
+
+ /**
+ * @type {number}
+ */
+ var opacity = options.opacity !== undefined ? options.opacity : 1;
+
+ /**
+ * @type {boolean}
+ */
+ var rotateWithView = options.rotateWithView !== undefined ?
+ options.rotateWithView : false;
+
+ /**
+ * @type {number}
+ */
+ var rotation = options.rotation !== undefined ? options.rotation : 0;
+
+ /**
+ * @type {number}
+ */
+ var scale = options.scale !== undefined ? options.scale : 1;
+
+ /**
+ * @type {boolean}
+ */
+ var snapToPixel = options.snapToPixel !== undefined ?
+ options.snapToPixel : true;
+
+ ol.style.Image.call(this, {
+ opacity: opacity,
+ rotation: rotation,
+ scale: scale,
+ snapToPixel: snapToPixel,
+ rotateWithView: rotateWithView
+ });
+
+};
+ol.inherits(ol.style.Icon, ol.style.Image);
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.Icon.prototype.getAnchor = function() {
+ if (this.normalizedAnchor_) {
+ return this.normalizedAnchor_;
+ }
+ var anchor = this.anchor_;
+ var size = this.getSize();
+ if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION ||
+ this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
+ if (!size) {
+ return null;
+ }
+ anchor = this.anchor_.slice();
+ if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION) {
+ anchor[0] *= size[0];
+ }
+ if (this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
+ anchor[1] *= size[1];
+ }
+ }
+
+ if (this.anchorOrigin_ != ol.style.IconOrigin.TOP_LEFT) {
+ if (!size) {
+ return null;
+ }
+ if (anchor === this.anchor_) {
+ anchor = this.anchor_.slice();
+ }
+ if (this.anchorOrigin_ == ol.style.IconOrigin.TOP_RIGHT ||
+ this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
+ anchor[0] = -anchor[0] + size[0];
+ }
+ if (this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_LEFT ||
+ this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
+ anchor[1] = -anchor[1] + size[1];
+ }
+ }
+ this.normalizedAnchor_ = anchor;
+ return this.normalizedAnchor_;
+};
+
+
+/**
+ * Get the image icon.
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {Image|HTMLCanvasElement} Image or Canvas element.
+ * @api
+ */
+ol.style.Icon.prototype.getImage = function(pixelRatio) {
+ return this.iconImage_.getImage(pixelRatio);
+};
+
+
+/**
+ * Real Image size used.
+ * @return {ol.Size} Size.
+ */
+ol.style.Icon.prototype.getImageSize = function() {
+ return this.iconImage_.getSize();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Icon.prototype.getHitDetectionImageSize = function() {
+ return this.getImageSize();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Icon.prototype.getImageState = function() {
+ return this.iconImage_.getImageState();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Icon.prototype.getHitDetectionImage = function(pixelRatio) {
+ return this.iconImage_.getHitDetectionImage(pixelRatio);
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.Icon.prototype.getOrigin = function() {
+ if (this.origin_) {
+ return this.origin_;
+ }
+ var offset = this.offset_;
+
+ if (this.offsetOrigin_ != ol.style.IconOrigin.TOP_LEFT) {
+ var size = this.getSize();
+ var iconImageSize = this.iconImage_.getSize();
+ if (!size || !iconImageSize) {
+ return null;
+ }
+ offset = offset.slice();
+ if (this.offsetOrigin_ == ol.style.IconOrigin.TOP_RIGHT ||
+ this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
+ offset[0] = iconImageSize[0] - size[0] - offset[0];
+ }
+ if (this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_LEFT ||
+ this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
+ offset[1] = iconImageSize[1] - size[1] - offset[1];
+ }
+ }
+ this.origin_ = offset;
+ return this.origin_;
+};
+
+
+/**
+ * Get the image URL.
+ * @return {string|undefined} Image src.
+ * @api
+ */
+ol.style.Icon.prototype.getSrc = function() {
+ return this.iconImage_.getSrc();
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.Icon.prototype.getSize = function() {
+ return !this.size_ ? this.iconImage_.getSize() : this.size_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Icon.prototype.listenImageChange = function(listener, thisArg) {
+ return ol.events.listen(this.iconImage_, ol.events.EventType.CHANGE,
+ listener, thisArg);
+};
+
+
+/**
+ * Load not yet loaded URI.
+ * When rendering a feature with an icon style, the vector renderer will
+ * automatically call this method. However, you might want to call this
+ * method yourself for preloading or other purposes.
+ * @api
+ */
+ol.style.Icon.prototype.load = function() {
+ this.iconImage_.load();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Icon.prototype.unlistenImageChange = function(listener, thisArg) {
+ ol.events.unlisten(this.iconImage_, ol.events.EventType.CHANGE,
+ listener, thisArg);
+};
+
+
+/**
+ * @constructor
+ * @param {Image|HTMLCanvasElement} image Image.
+ * @param {string|undefined} src Src.
+ * @param {ol.Size} size Size.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.style.ImageState} imageState Image state.
+ * @param {ol.Color} color Color.
+ * @extends {ol.events.EventTarget}
+ * @private
+ */
+ol.style.IconImage_ = function(image, src, size, crossOrigin, imageState,
+ color) {
+
+ ol.events.EventTarget.call(this);
+
+ /**
+ * @private
+ * @type {Image|HTMLCanvasElement}
+ */
+ this.hitDetectionImage_ = null;
+
+ /**
+ * @private
+ * @type {Image|HTMLCanvasElement}
+ */
+ this.image_ = !image ? new Image() : image;
+
+ if (crossOrigin !== null) {
+ this.image_.crossOrigin = crossOrigin;
+ }
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = color ?
+ /** @type {HTMLCanvasElement} */ (document.createElement('CANVAS')) :
+ null;
+
+ /**
+ * @private
+ * @type {ol.Color}
+ */
+ this.color_ = color;
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.imageListenerKeys_ = null;
+
+ /**
+ * @private
+ * @type {ol.style.ImageState}
+ */
+ this.imageState_ = imageState;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.size_ = size;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.src_ = src;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.tainting_ = false;
+ if (this.imageState_ == ol.style.ImageState.LOADED) {
+ this.determineTainting_();
+ }
+
+};
+ol.inherits(ol.style.IconImage_, ol.events.EventTarget);
+
+
+/**
+ * @param {Image|HTMLCanvasElement} image Image.
+ * @param {string} src Src.
+ * @param {ol.Size} size Size.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.style.ImageState} imageState Image state.
+ * @param {ol.Color} color Color.
+ * @return {ol.style.IconImage_} Icon image.
+ */
+ol.style.IconImage_.get = function(image, src, size, crossOrigin, imageState,
+ color) {
+ var iconImageCache = ol.style.IconImageCache.getInstance();
+ var iconImage = iconImageCache.get(src, crossOrigin, color);
+ if (!iconImage) {
+ iconImage = new ol.style.IconImage_(
+ image, src, size, crossOrigin, imageState, color);
+ iconImageCache.set(src, crossOrigin, color, iconImage);
+ }
+ return iconImage;
+};
+
+
+/**
+ * @private
+ */
+ol.style.IconImage_.prototype.determineTainting_ = function() {
+ var context = ol.dom.createCanvasContext2D(1, 1);
+ try {
+ context.drawImage(this.image_, 0, 0);
+ context.getImageData(0, 0, 1, 1);
+ } catch (e) {
+ this.tainting_ = true;
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.style.IconImage_.prototype.dispatchChangeEvent_ = function() {
+ this.dispatchEvent(ol.events.EventType.CHANGE);
+};
+
+
+/**
+ * @private
+ */
+ol.style.IconImage_.prototype.handleImageError_ = function() {
+ this.imageState_ = ol.style.ImageState.ERROR;
+ this.unlistenImage_();
+ this.dispatchChangeEvent_();
+};
+
+
+/**
+ * @private
+ */
+ol.style.IconImage_.prototype.handleImageLoad_ = function() {
+ this.imageState_ = ol.style.ImageState.LOADED;
+ if (this.size_) {
+ this.image_.width = this.size_[0];
+ this.image_.height = this.size_[1];
+ }
+ this.size_ = [this.image_.width, this.image_.height];
+ this.unlistenImage_();
+ this.determineTainting_();
+ this.replaceColor_();
+ this.dispatchChangeEvent_();
+};
+
+
+/**
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {Image|HTMLCanvasElement} Image or Canvas element.
+ */
+ol.style.IconImage_.prototype.getImage = function(pixelRatio) {
+ return this.canvas_ ? this.canvas_ : this.image_;
+};
+
+
+/**
+ * @return {ol.style.ImageState} Image state.
+ */
+ol.style.IconImage_.prototype.getImageState = function() {
+ return this.imageState_;
+};
+
+
+/**
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {Image|HTMLCanvasElement} Image element.
+ */
+ol.style.IconImage_.prototype.getHitDetectionImage = function(pixelRatio) {
+ if (!this.hitDetectionImage_) {
+ if (this.tainting_) {
+ var width = this.size_[0];
+ var height = this.size_[1];
+ var context = ol.dom.createCanvasContext2D(width, height);
+ context.fillRect(0, 0, width, height);
+ this.hitDetectionImage_ = context.canvas;
+ } else {
+ this.hitDetectionImage_ = this.image_;
+ }
+ }
+ return this.hitDetectionImage_;
+};
+
+
+/**
+ * @return {ol.Size} Image size.
+ */
+ol.style.IconImage_.prototype.getSize = function() {
+ return this.size_;
+};
+
+
+/**
+ * @return {string|undefined} Image src.
+ */
+ol.style.IconImage_.prototype.getSrc = function() {
+ return this.src_;
+};
+
+
+/**
+ * Load not yet loaded URI.
+ */
+ol.style.IconImage_.prototype.load = function() {
+ if (this.imageState_ == ol.style.ImageState.IDLE) {
+ goog.asserts.assert(this.src_ !== undefined,
+ 'this.src_ must not be undefined');
+ goog.asserts.assert(!this.imageListenerKeys_,
+ 'no listener keys existing');
+ this.imageState_ = ol.style.ImageState.LOADING;
+ this.imageListenerKeys_ = [
+ ol.events.listenOnce(this.image_, ol.events.EventType.ERROR,
+ this.handleImageError_, this),
+ ol.events.listenOnce(this.image_, ol.events.EventType.LOAD,
+ this.handleImageLoad_, this)
+ ];
+ try {
+ this.image_.src = this.src_;
+ } catch (e) {
+ this.handleImageError_();
+ }
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.style.IconImage_.prototype.replaceColor_ = function() {
+ if (this.tainting_ || this.color_ === null) {
+ return;
+ }
+
+ goog.asserts.assert(this.canvas_ !== null,
+ 'this.canvas_ must not be null');
+
+ this.canvas_.width = this.image_.width;
+ this.canvas_.height = this.image_.height;
+
+ var ctx = this.canvas_.getContext('2d');
+ ctx.drawImage(this.image_, 0, 0);
+
+ var imgData = ctx.getImageData(0, 0, this.image_.width, this.image_.height);
+ var data = imgData.data;
+ var r = this.color_[0] / 255.0;
+ var g = this.color_[1] / 255.0;
+ var b = this.color_[2] / 255.0;
+
+ for (var i = 0, ii = data.length; i < ii; i += 4) {
+ data[i] *= r;
+ data[i + 1] *= g;
+ data[i + 2] *= b;
+ }
+ ctx.putImageData(imgData, 0, 0);
+};
+
+
+/**
+ * Discards event handlers which listen for load completion or errors.
+ *
+ * @private
+ */
+ol.style.IconImage_.prototype.unlistenImage_ = function() {
+ goog.asserts.assert(this.imageListenerKeys_,
+ 'we must have listeners registered');
+ this.imageListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.imageListenerKeys_ = null;
+};
+
+
+/**
+ * @constructor
+ */
+ol.style.IconImageCache = function() {
+
+ /**
+ * @type {Object.<string, ol.style.IconImage_>}
+ * @private
+ */
+ this.cache_ = {};
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.cacheSize_ = 0;
+
+ /**
+ * @const
+ * @type {number}
+ * @private
+ */
+ this.maxCacheSize_ = 32;
+};
+goog.addSingletonGetter(ol.style.IconImageCache);
+
+
+/**
+ * @param {string} src Src.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.Color} color Color.
+ * @return {string} Cache key.
+ */
+ol.style.IconImageCache.getKey = function(src, crossOrigin, color) {
+ goog.asserts.assert(crossOrigin !== undefined,
+ 'argument crossOrigin must be defined');
+ var colorString = color ? ol.color.asString(color) : 'null';
+ return crossOrigin + ':' + src + ':' + colorString;
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.style.IconImageCache.prototype.clear = function() {
+ this.cache_ = {};
+ this.cacheSize_ = 0;
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.style.IconImageCache.prototype.expire = function() {
+ if (this.cacheSize_ > this.maxCacheSize_) {
+ var i = 0;
+ var key, iconImage;
+ for (key in this.cache_) {
+ iconImage = this.cache_[key];
+ if ((i++ & 3) === 0 && !iconImage.hasListener()) {
+ delete this.cache_[key];
+ --this.cacheSize_;
+ }
+ }
+ }
+};
+
+
+/**
+ * @param {string} src Src.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.Color} color Color.
+ * @return {ol.style.IconImage_} Icon image.
+ */
+ol.style.IconImageCache.prototype.get = function(src, crossOrigin, color) {
+ var key = ol.style.IconImageCache.getKey(src, crossOrigin, color);
+ return key in this.cache_ ? this.cache_[key] : null;
+};
+
+
+/**
+ * @param {string} src Src.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.Color} color Color.
+ * @param {ol.style.IconImage_} iconImage Icon image.
+ */
+ol.style.IconImageCache.prototype.set = function(src, crossOrigin, color,
+ iconImage) {
+ var key = ol.style.IconImageCache.getKey(src, crossOrigin, color);
+ this.cache_[key] = iconImage;
+ ++this.cacheSize_;
+};
+
+goog.provide('ol.RendererType');
+goog.provide('ol.renderer.Map');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+goog.require('ol.Disposable');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.functions');
+goog.require('ol.layer.Layer');
+goog.require('ol.renderer.Layer');
+goog.require('ol.style.IconImageCache');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * Available renderers: `'canvas'`, `'dom'` or `'webgl'`.
+ * @enum {string}
+ */
+ol.RendererType = {
+ CANVAS: 'canvas',
+ DOM: 'dom',
+ WEBGL: 'webgl'
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.Disposable}
+ * @param {Element} container Container.
+ * @param {ol.Map} map Map.
+ * @struct
+ */
+ol.renderer.Map = function(container, map) {
+
+ ol.Disposable.call(this);
+
+
+ /**
+ * @private
+ * @type {ol.Map}
+ */
+ this.map_ = map;
+
+ /**
+ * @private
+ * @type {Object.<string, ol.renderer.Layer>}
+ */
+ this.layerRenderers_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, ol.EventsKey>}
+ */
+ this.layerRendererListeners_ = {};
+
+};
+ol.inherits(ol.renderer.Map, ol.Disposable);
+
+
+/**
+ * @param {olx.FrameState} frameState FrameState.
+ * @protected
+ */
+ol.renderer.Map.prototype.calculateMatrices2D = function(frameState) {
+ var viewState = frameState.viewState;
+ var coordinateToPixelMatrix = frameState.coordinateToPixelMatrix;
+ goog.asserts.assert(coordinateToPixelMatrix,
+ 'frameState has a coordinateToPixelMatrix');
+ ol.vec.Mat4.makeTransform2D(coordinateToPixelMatrix,
+ frameState.size[0] / 2, frameState.size[1] / 2,
+ 1 / viewState.resolution, -1 / viewState.resolution,
+ -viewState.rotation,
+ -viewState.center[0], -viewState.center[1]);
+ var inverted = goog.vec.Mat4.invert(
+ coordinateToPixelMatrix, frameState.pixelToCoordinateMatrix);
+ goog.asserts.assert(inverted, 'matrix could be inverted');
+};
+
+
+/**
+ * @param {ol.layer.Layer} layer Layer.
+ * @protected
+ * @return {ol.renderer.Layer} layerRenderer Layer renderer.
+ */
+ol.renderer.Map.prototype.createLayerRenderer = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.Map.prototype.disposeInternal = function() {
+ for (var id in this.layerRenderers_) {
+ this.layerRenderers_[id].dispose();
+ }
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.Map.expireIconCache_ = function(map, frameState) {
+ ol.style.IconImageCache.getInstance().expire();
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {olx.FrameState} frameState FrameState.
+ * @param {function(this: S, (ol.Feature|ol.render.Feature),
+ * ol.layer.Layer): T} callback Feature callback.
+ * @param {S} thisArg Value to use as `this` when executing `callback`.
+ * @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
+ * function, only layers which are visible and for which this function
+ * returns `true` will be tested for features. By default, all visible
+ * layers will be tested.
+ * @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.
+ * @return {T|undefined} Callback result.
+ * @template S,T,U
+ */
+ol.renderer.Map.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg,
+ layerFilter, thisArg2) {
+ var result;
+ var viewState = frameState.viewState;
+ var viewResolution = viewState.resolution;
+
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {?} Callback result.
+ */
+ function forEachFeatureAtCoordinate(feature, layer) {
+ goog.asserts.assert(feature !== undefined, 'received a feature');
+ var key = goog.getUid(feature).toString();
+ var managed = frameState.layerStates[goog.getUid(layer)].managed;
+ if (!(key in frameState.skippedFeatureUids && !managed)) {
+ return callback.call(thisArg, feature, managed ? layer : null);
+ }
+ }
+
+ var projection = viewState.projection;
+
+ var translatedCoordinate = coordinate;
+ if (projection.canWrapX()) {
+ var projectionExtent = projection.getExtent();
+ var worldWidth = ol.extent.getWidth(projectionExtent);
+ var x = coordinate[0];
+ if (x < projectionExtent[0] || x > projectionExtent[2]) {
+ var worldsAway = Math.ceil((projectionExtent[0] - x) / worldWidth);
+ translatedCoordinate = [x + worldWidth * worldsAway, coordinate[1]];
+ }
+ }
+
+ var layerStates = frameState.layerStatesArray;
+ var numLayers = layerStates.length;
+ var i;
+ for (i = numLayers - 1; i >= 0; --i) {
+ var layerState = layerStates[i];
+ var layer = layerState.layer;
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
+ layerFilter.call(thisArg2, layer)) {
+ var layerRenderer = this.getLayerRenderer(layer);
+ if (layer.getSource()) {
+ result = layerRenderer.forEachFeatureAtCoordinate(
+ layer.getSource().getWrapX() ? translatedCoordinate : coordinate,
+ frameState, forEachFeatureAtCoordinate, thisArg);
+ }
+ if (result) {
+ return result;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {ol.Pixel} pixel Pixel.
+ * @param {olx.FrameState} frameState FrameState.
+ * @param {function(this: S, ol.layer.Layer): T} callback Layer
+ * callback.
+ * @param {S} thisArg Value to use as `this` when executing `callback`.
+ * @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
+ * function, only layers which are visible and for which this function
+ * returns `true` will be tested for features. By default, all visible
+ * layers will be tested.
+ * @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.
+ * @return {T|undefined} Callback result.
+ * @template S,T,U
+ */
+ol.renderer.Map.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg,
+ layerFilter, thisArg2) {
+ var result;
+ var viewState = frameState.viewState;
+ var viewResolution = viewState.resolution;
+
+ var layerStates = frameState.layerStatesArray;
+ var numLayers = layerStates.length;
+ var i;
+ for (i = numLayers - 1; i >= 0; --i) {
+ var layerState = layerStates[i];
+ var layer = layerState.layer;
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
+ layerFilter.call(thisArg2, layer)) {
+ var layerRenderer = this.getLayerRenderer(layer);
+ result = layerRenderer.forEachLayerAtPixel(
+ pixel, frameState, callback, thisArg);
+ if (result) {
+ return result;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {olx.FrameState} frameState FrameState.
+ * @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
+ * function, only layers which are visible and for which this function
+ * returns `true` will be tested for features. By default, all visible
+ * layers will be tested.
+ * @param {U} thisArg Value to use as `this` when executing `layerFilter`.
+ * @return {boolean} Is there a feature at the given coordinate?
+ * @template U
+ */
+ol.renderer.Map.prototype.hasFeatureAtCoordinate = function(coordinate, frameState, layerFilter, thisArg) {
+ var hasFeature = this.forEachFeatureAtCoordinate(
+ coordinate, frameState, ol.functions.TRUE, this, layerFilter, thisArg);
+
+ return hasFeature !== undefined;
+};
+
+
+/**
+ * @param {ol.layer.Layer} layer Layer.
+ * @protected
+ * @return {ol.renderer.Layer} Layer renderer.
+ */
+ol.renderer.Map.prototype.getLayerRenderer = function(layer) {
+ var layerKey = goog.getUid(layer).toString();
+ if (layerKey in this.layerRenderers_) {
+ return this.layerRenderers_[layerKey];
+ } else {
+ var layerRenderer = this.createLayerRenderer(layer);
+ this.layerRenderers_[layerKey] = layerRenderer;
+ this.layerRendererListeners_[layerKey] = ol.events.listen(layerRenderer,
+ ol.events.EventType.CHANGE, this.handleLayerRendererChange_, this);
+
+ return layerRenderer;
+ }
+};
+
+
+/**
+ * @param {string} layerKey Layer key.
+ * @protected
+ * @return {ol.renderer.Layer} Layer renderer.
+ */
+ol.renderer.Map.prototype.getLayerRendererByKey = function(layerKey) {
+ goog.asserts.assert(layerKey in this.layerRenderers_,
+ 'given layerKey (%s) exists in layerRenderers', layerKey);
+ return this.layerRenderers_[layerKey];
+};
+
+
+/**
+ * @protected
+ * @return {Object.<string, ol.renderer.Layer>} Layer renderers.
+ */
+ol.renderer.Map.prototype.getLayerRenderers = function() {
+ return this.layerRenderers_;
+};
+
+
+/**
+ * @return {ol.Map} Map.
+ */
+ol.renderer.Map.prototype.getMap = function() {
+ return this.map_;
+};
+
+
+/**
+ * @return {string} Type
+ */
+ol.renderer.Map.prototype.getType = goog.abstractMethod;
+
+
+/**
+ * Handle changes in a layer renderer.
+ * @private
+ */
+ol.renderer.Map.prototype.handleLayerRendererChange_ = function() {
+ this.map_.render();
+};
+
+
+/**
+ * @param {string} layerKey Layer key.
+ * @return {ol.renderer.Layer} Layer renderer.
+ * @private
+ */
+ol.renderer.Map.prototype.removeLayerRendererByKey_ = function(layerKey) {
+ goog.asserts.assert(layerKey in this.layerRenderers_,
+ 'given layerKey (%s) exists in layerRenderers', layerKey);
+ var layerRenderer = this.layerRenderers_[layerKey];
+ delete this.layerRenderers_[layerKey];
+
+ goog.asserts.assert(layerKey in this.layerRendererListeners_,
+ 'given layerKey (%s) exists in layerRendererListeners', layerKey);
+ ol.events.unlistenByKey(this.layerRendererListeners_[layerKey]);
+ delete this.layerRendererListeners_[layerKey];
+
+ return layerRenderer;
+};
+
+
+/**
+ * Render.
+ * @param {?olx.FrameState} frameState Frame state.
+ */
+ol.renderer.Map.prototype.renderFrame = ol.nullFunction;
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.Map.prototype.removeUnusedLayerRenderers_ = function(map, frameState) {
+ var layerKey;
+ for (layerKey in this.layerRenderers_) {
+ if (!frameState || !(layerKey in frameState.layerStates)) {
+ this.removeLayerRendererByKey_(layerKey).dispose();
+ }
+ }
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @protected
+ */
+ol.renderer.Map.prototype.scheduleExpireIconCache = function(frameState) {
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (ol.renderer.Map.expireIconCache_)
+ );
+};
+
+
+/**
+ * @param {!olx.FrameState} frameState Frame state.
+ * @protected
+ */
+ol.renderer.Map.prototype.scheduleRemoveUnusedLayerRenderers = function(frameState) {
+ var layerKey;
+ for (layerKey in this.layerRenderers_) {
+ if (!(layerKey in frameState.layerStates)) {
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (this.removeUnusedLayerRenderers_.bind(this))
+ );
+ return;
+ }
+ }
+};
+
+
+/**
+ * @param {ol.LayerState} state1 First layer state.
+ * @param {ol.LayerState} state2 Second layer state.
+ * @return {number} The zIndex difference.
+ */
+ol.renderer.Map.sortByZIndex = function(state1, state2) {
+ return state1.zIndex - state2.zIndex;
+};
+
+goog.provide('ol.structs.PriorityQueue');
+
+goog.require('goog.asserts');
+goog.require('ol.object');
+
+
+/**
+ * Priority queue.
+ *
+ * The implementation is inspired from the Closure Library's Heap class and
+ * Python's heapq module.
+ *
+ * @see http://closure-library.googlecode.com/svn/docs/closure_goog_structs_heap.js.source.html
+ * @see http://hg.python.org/cpython/file/2.7/Lib/heapq.py
+ *
+ * @constructor
+ * @param {function(T): number} priorityFunction Priority function.
+ * @param {function(T): string} keyFunction Key function.
+ * @struct
+ * @template T
+ */
+ol.structs.PriorityQueue = function(priorityFunction, keyFunction) {
+
+ /**
+ * @type {function(T): number}
+ * @private
+ */
+ this.priorityFunction_ = priorityFunction;
+
+ /**
+ * @type {function(T): string}
+ * @private
+ */
+ this.keyFunction_ = keyFunction;
+
+ /**
+ * @type {Array.<T>}
+ * @private
+ */
+ this.elements_ = [];
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.priorities_ = [];
+
+ /**
+ * @type {Object.<string, boolean>}
+ * @private
+ */
+ this.queuedElements_ = {};
+
+};
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.structs.PriorityQueue.DROP = Infinity;
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.structs.PriorityQueue.prototype.assertValid = function() {
+ var elements = this.elements_;
+ var priorities = this.priorities_;
+ var n = elements.length;
+ goog.asserts.assert(priorities.length == n);
+ var i, priority;
+ for (i = 0; i < (n >> 1) - 1; ++i) {
+ priority = priorities[i];
+ goog.asserts.assert(priority <= priorities[this.getLeftChildIndex_(i)],
+ 'priority smaller than or equal to priority of left child (%s <= %s)',
+ priority, priorities[this.getLeftChildIndex_(i)]);
+ goog.asserts.assert(priority <= priorities[this.getRightChildIndex_(i)],
+ 'priority smaller than or equal to priority of right child (%s <= %s)',
+ priority, priorities[this.getRightChildIndex_(i)]);
+ }
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.structs.PriorityQueue.prototype.clear = function() {
+ this.elements_.length = 0;
+ this.priorities_.length = 0;
+ ol.object.clear(this.queuedElements_);
+};
+
+
+/**
+ * Remove and return the highest-priority element. O(log N).
+ * @return {T} Element.
+ */
+ol.structs.PriorityQueue.prototype.dequeue = function() {
+ var elements = this.elements_;
+ goog.asserts.assert(elements.length > 0,
+ 'must have elements in order to be able to dequeue');
+ var priorities = this.priorities_;
+ var element = elements[0];
+ if (elements.length == 1) {
+ elements.length = 0;
+ priorities.length = 0;
+ } else {
+ elements[0] = elements.pop();
+ priorities[0] = priorities.pop();
+ this.siftUp_(0);
+ }
+ var elementKey = this.keyFunction_(element);
+ goog.asserts.assert(elementKey in this.queuedElements_,
+ 'key %s is not listed as queued', elementKey);
+ delete this.queuedElements_[elementKey];
+ return element;
+};
+
+
+/**
+ * Enqueue an element. O(log N).
+ * @param {T} element Element.
+ * @return {boolean} The element was added to the queue.
+ */
+ol.structs.PriorityQueue.prototype.enqueue = function(element) {
+ goog.asserts.assert(!(this.keyFunction_(element) in this.queuedElements_),
+ 'key %s is already listed as queued', this.keyFunction_(element));
+ var priority = this.priorityFunction_(element);
+ if (priority != ol.structs.PriorityQueue.DROP) {
+ this.elements_.push(element);
+ this.priorities_.push(priority);
+ this.queuedElements_[this.keyFunction_(element)] = true;
+ this.siftDown_(0, this.elements_.length - 1);
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * @return {number} Count.
+ */
+ol.structs.PriorityQueue.prototype.getCount = function() {
+ return this.elements_.length;
+};
+
+
+/**
+ * Gets the index of the left child of the node at the given index.
+ * @param {number} index The index of the node to get the left child for.
+ * @return {number} The index of the left child.
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.getLeftChildIndex_ = function(index) {
+ return index * 2 + 1;
+};
+
+
+/**
+ * Gets the index of the right child of the node at the given index.
+ * @param {number} index The index of the node to get the right child for.
+ * @return {number} The index of the right child.
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.getRightChildIndex_ = function(index) {
+ return index * 2 + 2;
+};
+
+
+/**
+ * Gets the index of the parent of the node at the given index.
+ * @param {number} index The index of the node to get the parent for.
+ * @return {number} The index of the parent.
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.getParentIndex_ = function(index) {
+ return (index - 1) >> 1;
+};
+
+
+/**
+ * Make this a heap. O(N).
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.heapify_ = function() {
+ var i;
+ for (i = (this.elements_.length >> 1) - 1; i >= 0; i--) {
+ this.siftUp_(i);
+ }
+};
+
+
+/**
+ * @return {boolean} Is empty.
+ */
+ol.structs.PriorityQueue.prototype.isEmpty = function() {
+ return this.elements_.length === 0;
+};
+
+
+/**
+ * @param {string} key Key.
+ * @return {boolean} Is key queued.
+ */
+ol.structs.PriorityQueue.prototype.isKeyQueued = function(key) {
+ return key in this.queuedElements_;
+};
+
+
+/**
+ * @param {T} element Element.
+ * @return {boolean} Is queued.
+ */
+ol.structs.PriorityQueue.prototype.isQueued = function(element) {
+ return this.isKeyQueued(this.keyFunction_(element));
+};
+
+
+/**
+ * @param {number} index The index of the node to move down.
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.siftUp_ = function(index) {
+ var elements = this.elements_;
+ var priorities = this.priorities_;
+ var count = elements.length;
+ var element = elements[index];
+ var priority = priorities[index];
+ var startIndex = index;
+
+ while (index < (count >> 1)) {
+ var lIndex = this.getLeftChildIndex_(index);
+ var rIndex = this.getRightChildIndex_(index);
+
+ var smallerChildIndex = rIndex < count &&
+ priorities[rIndex] < priorities[lIndex] ?
+ rIndex : lIndex;
+
+ elements[index] = elements[smallerChildIndex];
+ priorities[index] = priorities[smallerChildIndex];
+ index = smallerChildIndex;
+ }
+
+ elements[index] = element;
+ priorities[index] = priority;
+ this.siftDown_(startIndex, index);
+};
+
+
+/**
+ * @param {number} startIndex The index of the root.
+ * @param {number} index The index of the node to move up.
+ * @private
+ */
+ol.structs.PriorityQueue.prototype.siftDown_ = function(startIndex, index) {
+ var elements = this.elements_;
+ var priorities = this.priorities_;
+ var element = elements[index];
+ var priority = priorities[index];
+
+ while (index > startIndex) {
+ var parentIndex = this.getParentIndex_(index);
+ if (priorities[parentIndex] > priority) {
+ elements[index] = elements[parentIndex];
+ priorities[index] = priorities[parentIndex];
+ index = parentIndex;
+ } else {
+ break;
+ }
+ }
+ elements[index] = element;
+ priorities[index] = priority;
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.structs.PriorityQueue.prototype.reprioritize = function() {
+ var priorityFunction = this.priorityFunction_;
+ var elements = this.elements_;
+ var priorities = this.priorities_;
+ var index = 0;
+ var n = elements.length;
+ var element, i, priority;
+ for (i = 0; i < n; ++i) {
+ element = elements[i];
+ priority = priorityFunction(element);
+ if (priority == ol.structs.PriorityQueue.DROP) {
+ delete this.queuedElements_[this.keyFunction_(element)];
+ } else {
+ priorities[index] = priority;
+ elements[index++] = element;
+ }
+ }
+ elements.length = index;
+ priorities.length = index;
+ this.heapify_();
+};
+
+goog.provide('ol.TileQueue');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.TileState');
+goog.require('ol.structs.PriorityQueue');
+
+
+/**
+ * @constructor
+ * @extends {ol.structs.PriorityQueue.<Array>}
+ * @param {ol.TilePriorityFunction} tilePriorityFunction
+ * Tile priority function.
+ * @param {function(): ?} tileChangeCallback
+ * Function called on each tile change event.
+ * @struct
+ */
+ol.TileQueue = function(tilePriorityFunction, tileChangeCallback) {
+
+ ol.structs.PriorityQueue.call(
+ this,
+ /**
+ * @param {Array} element Element.
+ * @return {number} Priority.
+ */
+ function(element) {
+ return tilePriorityFunction.apply(null, element);
+ },
+ /**
+ * @param {Array} element Element.
+ * @return {string} Key.
+ */
+ function(element) {
+ return /** @type {ol.Tile} */ (element[0]).getKey();
+ });
+
+ /**
+ * @private
+ * @type {function(): ?}
+ */
+ this.tileChangeCallback_ = tileChangeCallback;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.tilesLoading_ = 0;
+
+ /**
+ * @private
+ * @type {!Object.<string,boolean>}
+ */
+ this.tilesLoadingKeys_ = {};
+
+};
+ol.inherits(ol.TileQueue, ol.structs.PriorityQueue);
+
+
+/**
+ * @inheritDoc
+ */
+ol.TileQueue.prototype.enqueue = function(element) {
+ var added = ol.structs.PriorityQueue.prototype.enqueue.call(this, element);
+ if (added) {
+ var tile = element[0];
+ ol.events.listen(tile, ol.events.EventType.CHANGE,
+ this.handleTileChange, this);
+ }
+ return added;
+};
+
+
+/**
+ * @return {number} Number of tiles loading.
+ */
+ol.TileQueue.prototype.getTilesLoading = function() {
+ return this.tilesLoading_;
+};
+
+
+/**
+ * @param {ol.events.Event} event Event.
+ * @protected
+ */
+ol.TileQueue.prototype.handleTileChange = function(event) {
+ var tile = /** @type {ol.Tile} */ (event.target);
+ var state = tile.getState();
+ if (state === ol.TileState.LOADED || state === ol.TileState.ERROR ||
+ state === ol.TileState.EMPTY || state === ol.TileState.ABORT) {
+ ol.events.unlisten(tile, ol.events.EventType.CHANGE,
+ this.handleTileChange, this);
+ var tileKey = tile.getKey();
+ if (tileKey in this.tilesLoadingKeys_) {
+ delete this.tilesLoadingKeys_[tileKey];
+ --this.tilesLoading_;
+ }
+ this.tileChangeCallback_();
+ }
+ goog.asserts.assert(Object.keys(this.tilesLoadingKeys_).length === this.tilesLoading_);
+};
+
+
+/**
+ * @param {number} maxTotalLoading Maximum number tiles to load simultaneously.
+ * @param {number} maxNewLoads Maximum number of new tiles to load.
+ */
+ol.TileQueue.prototype.loadMoreTiles = function(maxTotalLoading, maxNewLoads) {
+ var newLoads = 0;
+ var tile, tileKey;
+ while (this.tilesLoading_ < maxTotalLoading && newLoads < maxNewLoads &&
+ this.getCount() > 0) {
+ tile = /** @type {ol.Tile} */ (this.dequeue()[0]);
+ tileKey = tile.getKey();
+ if (tile.getState() === ol.TileState.IDLE && !(tileKey in this.tilesLoadingKeys_)) {
+ this.tilesLoadingKeys_[tileKey] = true;
+ ++this.tilesLoading_;
+ ++newLoads;
+ tile.load();
+ }
+ goog.asserts.assert(Object.keys(this.tilesLoadingKeys_).length === this.tilesLoading_);
+ }
+};
+
+goog.provide('ol.Kinetic');
+
+goog.require('ol.animation');
+
+
+/**
+ * @classdesc
+ * Implementation of inertial deceleration for map movement.
+ *
+ * @constructor
+ * @param {number} decay Rate of decay (must be negative).
+ * @param {number} minVelocity Minimum velocity (pixels/millisecond).
+ * @param {number} delay Delay to consider to calculate the kinetic
+ * initial values (milliseconds).
+ * @struct
+ * @api
+ */
+ol.Kinetic = function(decay, minVelocity, delay) {
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.decay_ = decay;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.minVelocity_ = minVelocity;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.delay_ = delay;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.points_ = [];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.angle_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.initialVelocity_ = 0;
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.Kinetic.prototype.begin = function() {
+ this.points_.length = 0;
+ this.angle_ = 0;
+ this.initialVelocity_ = 0;
+};
+
+
+/**
+ * @param {number} x X.
+ * @param {number} y Y.
+ */
+ol.Kinetic.prototype.update = function(x, y) {
+ this.points_.push(x, y, Date.now());
+};
+
+
+/**
+ * @return {boolean} Whether we should do kinetic animation.
+ */
+ol.Kinetic.prototype.end = function() {
+ if (this.points_.length < 6) {
+ // at least 2 points are required (i.e. there must be at least 6 elements
+ // in the array)
+ return false;
+ }
+ var delay = Date.now() - this.delay_;
+ var lastIndex = this.points_.length - 3;
+ if (this.points_[lastIndex + 2] < delay) {
+ // the last tracked point is too old, which means that the user stopped
+ // panning before releasing the map
+ return false;
+ }
+
+ // get the first point which still falls into the delay time
+ var firstIndex = lastIndex - 3;
+ while (firstIndex > 0 && this.points_[firstIndex + 2] > delay) {
+ firstIndex -= 3;
+ }
+ var duration = this.points_[lastIndex + 2] - this.points_[firstIndex + 2];
+ var dx = this.points_[lastIndex] - this.points_[firstIndex];
+ var dy = this.points_[lastIndex + 1] - this.points_[firstIndex + 1];
+ this.angle_ = Math.atan2(dy, dx);
+ this.initialVelocity_ = Math.sqrt(dx * dx + dy * dy) / duration;
+ return this.initialVelocity_ > this.minVelocity_;
+};
+
+
+/**
+ * @param {ol.Coordinate} source Source coordinate for the animation.
+ * @return {ol.PreRenderFunction} Pre-render function for kinetic animation.
+ */
+ol.Kinetic.prototype.pan = function(source) {
+ var decay = this.decay_;
+ var initialVelocity = this.initialVelocity_;
+ var velocity = this.minVelocity_ - initialVelocity;
+ var duration = this.getDuration_();
+ var easingFunction = (
+ /**
+ * @param {number} t T.
+ * @return {number} Easing.
+ */
+ function(t) {
+ return initialVelocity * (Math.exp((decay * t) * duration) - 1) /
+ velocity;
+ });
+ return ol.animation.pan({
+ source: source,
+ duration: duration,
+ easing: easingFunction
+ });
+};
+
+
+/**
+ * @private
+ * @return {number} Duration of animation (milliseconds).
+ */
+ol.Kinetic.prototype.getDuration_ = function() {
+ return Math.log(this.minVelocity_ / this.initialVelocity_) / this.decay_;
+};
+
+
+/**
+ * @return {number} Total distance travelled (pixels).
+ */
+ol.Kinetic.prototype.getDistance = function() {
+ return (this.minVelocity_ - this.initialVelocity_) / this.decay_;
+};
+
+
+/**
+ * @return {number} Angle of the kinetic panning animation (radians).
+ */
+ol.Kinetic.prototype.getAngle = function() {
+ return this.angle_;
+};
+
+// FIXME factor out key precondition (shift et. al)
+
+goog.provide('ol.interaction.Interaction');
+goog.provide('ol.interaction.InteractionProperty');
+
+goog.require('ol');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.Object');
+goog.require('ol.animation');
+goog.require('ol.easing');
+
+
+/**
+ * @enum {string}
+ */
+ol.interaction.InteractionProperty = {
+ ACTIVE: 'active'
+};
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * User actions that change the state of the map. Some are similar to controls,
+ * but are not associated with a DOM element.
+ * For example, {@link ol.interaction.KeyboardZoom} is functionally the same as
+ * {@link ol.control.Zoom}, but triggered by a keyboard event not a button
+ * element event.
+ * Although interactions do not have a DOM element, some of them do render
+ * vectors and so are visible on the screen.
+ *
+ * @constructor
+ * @param {olx.interaction.InteractionOptions} options Options.
+ * @extends {ol.Object}
+ * @api
+ */
+ol.interaction.Interaction = function(options) {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {ol.Map}
+ */
+ this.map_ = null;
+
+ this.setActive(true);
+
+ /**
+ * @type {function(ol.MapBrowserEvent):boolean}
+ */
+ this.handleEvent = options.handleEvent;
+
+};
+ol.inherits(ol.interaction.Interaction, ol.Object);
+
+
+/**
+ * Return whether the interaction is currently active.
+ * @return {boolean} `true` if the interaction is active, `false` otherwise.
+ * @observable
+ * @api
+ */
+ol.interaction.Interaction.prototype.getActive = function() {
+ return /** @type {boolean} */ (
+ this.get(ol.interaction.InteractionProperty.ACTIVE));
+};
+
+
+/**
+ * Get the map associated with this interaction.
+ * @return {ol.Map} Map.
+ * @api
+ */
+ol.interaction.Interaction.prototype.getMap = function() {
+ return this.map_;
+};
+
+
+/**
+ * Activate or deactivate the interaction.
+ * @param {boolean} active Active.
+ * @observable
+ * @api
+ */
+ol.interaction.Interaction.prototype.setActive = function(active) {
+ this.set(ol.interaction.InteractionProperty.ACTIVE, active);
+};
+
+
+/**
+ * Remove the interaction from its current map and attach it to the new map.
+ * Subclasses may set up event handlers to get notified about changes to
+ * the map here.
+ * @param {ol.Map} map Map.
+ */
+ol.interaction.Interaction.prototype.setMap = function(map) {
+ this.map_ = map;
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {ol.Coordinate} delta Delta.
+ * @param {number=} opt_duration Duration.
+ */
+ol.interaction.Interaction.pan = function(map, view, delta, opt_duration) {
+ var currentCenter = view.getCenter();
+ if (currentCenter) {
+ if (opt_duration && opt_duration > 0) {
+ map.beforeRender(ol.animation.pan({
+ source: currentCenter,
+ duration: opt_duration,
+ easing: ol.easing.linear
+ }));
+ }
+ var center = view.constrainCenter(
+ [currentCenter[0] + delta[0], currentCenter[1] + delta[1]]);
+ view.setCenter(center);
+ }
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {number|undefined} rotation Rotation.
+ * @param {ol.Coordinate=} opt_anchor Anchor coordinate.
+ * @param {number=} opt_duration Duration.
+ */
+ol.interaction.Interaction.rotate = function(map, view, rotation, opt_anchor, opt_duration) {
+ rotation = view.constrainRotation(rotation, 0);
+ ol.interaction.Interaction.rotateWithoutConstraints(
+ map, view, rotation, opt_anchor, opt_duration);
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {number|undefined} rotation Rotation.
+ * @param {ol.Coordinate=} opt_anchor Anchor coordinate.
+ * @param {number=} opt_duration Duration.
+ */
+ol.interaction.Interaction.rotateWithoutConstraints = function(map, view, rotation, opt_anchor, opt_duration) {
+ if (rotation !== undefined) {
+ var currentRotation = view.getRotation();
+ var currentCenter = view.getCenter();
+ if (currentRotation !== undefined && currentCenter &&
+ opt_duration && opt_duration > 0) {
+ map.beforeRender(ol.animation.rotate({
+ rotation: currentRotation,
+ duration: opt_duration,
+ easing: ol.easing.easeOut
+ }));
+ if (opt_anchor) {
+ map.beforeRender(ol.animation.pan({
+ source: currentCenter,
+ duration: opt_duration,
+ easing: ol.easing.easeOut
+ }));
+ }
+ }
+ view.rotate(rotation, opt_anchor);
+ }
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {number|undefined} resolution Resolution to go to.
+ * @param {ol.Coordinate=} opt_anchor Anchor coordinate.
+ * @param {number=} opt_duration Duration.
+ * @param {number=} opt_direction Zooming direction; > 0 indicates
+ * zooming out, in which case the constraints system will select
+ * the largest nearest resolution; < 0 indicates zooming in, in
+ * which case the constraints system will select the smallest
+ * nearest resolution; == 0 indicates that the zooming direction
+ * is unknown/not relevant, in which case the constraints system
+ * will select the nearest resolution. If not defined 0 is
+ * assumed.
+ */
+ol.interaction.Interaction.zoom = function(map, view, resolution, opt_anchor, opt_duration, opt_direction) {
+ resolution = view.constrainResolution(resolution, 0, opt_direction);
+ ol.interaction.Interaction.zoomWithoutConstraints(
+ map, view, resolution, opt_anchor, opt_duration);
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {number} delta Delta from previous zoom level.
+ * @param {ol.Coordinate=} opt_anchor Anchor coordinate.
+ * @param {number=} opt_duration Duration.
+ */
+ol.interaction.Interaction.zoomByDelta = function(map, view, delta, opt_anchor, opt_duration) {
+ var currentResolution = view.getResolution();
+ var resolution = view.constrainResolution(currentResolution, delta, 0);
+ ol.interaction.Interaction.zoomWithoutConstraints(
+ map, view, resolution, opt_anchor, opt_duration);
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {ol.View} view View.
+ * @param {number|undefined} resolution Resolution to go to.
+ * @param {ol.Coordinate=} opt_anchor Anchor coordinate.
+ * @param {number=} opt_duration Duration.
+ */
+ol.interaction.Interaction.zoomWithoutConstraints = function(map, view, resolution, opt_anchor, opt_duration) {
+ if (resolution) {
+ var currentResolution = view.getResolution();
+ var currentCenter = view.getCenter();
+ if (currentResolution !== undefined && currentCenter &&
+ resolution !== currentResolution &&
+ opt_duration && opt_duration > 0) {
+ map.beforeRender(ol.animation.zoom({
+ resolution: currentResolution,
+ duration: opt_duration,
+ easing: ol.easing.easeOut
+ }));
+ if (opt_anchor) {
+ map.beforeRender(ol.animation.pan({
+ source: currentCenter,
+ duration: opt_duration,
+ easing: ol.easing.easeOut
+ }));
+ }
+ }
+ if (opt_anchor) {
+ var center = view.calculateCenterZoom(resolution, opt_anchor);
+ view.setCenter(center);
+ }
+ view.setResolution(resolution);
+ }
+};
+
+goog.provide('ol.interaction.DoubleClickZoom');
+
+goog.require('goog.asserts');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.interaction.Interaction');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom by double-clicking on the map.
+ *
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @param {olx.interaction.DoubleClickZoomOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DoubleClickZoom = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.delta_ = options.delta ? options.delta : 1;
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.DoubleClickZoom.handleEvent
+ });
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+
+};
+ol.inherits(ol.interaction.DoubleClickZoom, ol.interaction.Interaction);
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} (if it was a
+ * doubleclick) and eventually zooms the map.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.DoubleClickZoom}
+ * @api
+ */
+ol.interaction.DoubleClickZoom.handleEvent = function(mapBrowserEvent) {
+ var stopEvent = false;
+ var browserEvent = mapBrowserEvent.originalEvent;
+ if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.DBLCLICK) {
+ var map = mapBrowserEvent.map;
+ var anchor = mapBrowserEvent.coordinate;
+ var delta = browserEvent.shiftKey ? -this.delta_ : this.delta_;
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have a view');
+ ol.interaction.Interaction.zoomByDelta(
+ map, view, delta, anchor, this.duration_);
+ mapBrowserEvent.preventDefault();
+ stopEvent = true;
+ }
+ return !stopEvent;
+};
+
+goog.provide('ol.events.condition');
+
+goog.require('goog.asserts');
+goog.require('ol.functions');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.MapBrowserPointerEvent');
+
+
+/**
+ * Return `true` if only the alt-key is pressed, `false` otherwise (e.g. when
+ * additionally the shift-key is pressed).
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if only the alt key is pressed.
+ * @api stable
+ */
+ol.events.condition.altKeyOnly = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return (
+ originalEvent.altKey &&
+ !(originalEvent.metaKey || originalEvent.ctrlKey) &&
+ !originalEvent.shiftKey);
+};
+
+
+/**
+ * Return `true` if only the alt-key and shift-key is pressed, `false` otherwise
+ * (e.g. when additionally the platform-modifier-key is pressed).
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if only the alt and shift keys are pressed.
+ * @api stable
+ */
+ol.events.condition.altShiftKeysOnly = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return (
+ originalEvent.altKey &&
+ !(originalEvent.metaKey || originalEvent.ctrlKey) &&
+ originalEvent.shiftKey);
+};
+
+
+/**
+ * Return always true.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True.
+ * @function
+ * @api stable
+ */
+ol.events.condition.always = ol.functions.TRUE;
+
+
+/**
+ * Return `true` if the event is a `click` event, `false` otherwise.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event is a map `click` event.
+ * @api stable
+ */
+ol.events.condition.click = function(mapBrowserEvent) {
+ return mapBrowserEvent.type == ol.MapBrowserEvent.EventType.CLICK;
+};
+
+
+/**
+ * Return `true` if the event has an "action"-producing mouse button.
+ *
+ * By definition, this includes left-click on windows/linux, and left-click
+ * without the ctrl key on Macs.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} The result.
+ */
+ol.events.condition.mouseActionButton = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return originalEvent.button == 0 &&
+ !(goog.userAgent.WEBKIT && ol.has.MAC && originalEvent.ctrlKey);
+};
+
+
+/**
+ * Return always false.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} False.
+ * @function
+ * @api stable
+ */
+ol.events.condition.never = ol.functions.FALSE;
+
+
+/**
+ * Return `true` if the browser event is a `pointermove` event, `false`
+ * otherwise.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the browser event is a `pointermove` event.
+ * @api
+ */
+ol.events.condition.pointerMove = function(mapBrowserEvent) {
+ return mapBrowserEvent.type == 'pointermove';
+};
+
+
+/**
+ * Return `true` if the event is a map `singleclick` event, `false` otherwise.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event is a map `singleclick` event.
+ * @api stable
+ */
+ol.events.condition.singleClick = function(mapBrowserEvent) {
+ return mapBrowserEvent.type == ol.MapBrowserEvent.EventType.SINGLECLICK;
+};
+
+
+/**
+ * Return `true` if the event is a map `dblclick` event, `false` otherwise.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event is a map `dblclick` event.
+ * @api stable
+ */
+ol.events.condition.doubleClick = function(mapBrowserEvent) {
+ return mapBrowserEvent.type == ol.MapBrowserEvent.EventType.DBLCLICK;
+};
+
+
+/**
+ * Return `true` if no modifier key (alt-, shift- or platform-modifier-key) is
+ * pressed.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True only if there no modifier keys are pressed.
+ * @api stable
+ */
+ol.events.condition.noModifierKeys = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return (
+ !originalEvent.altKey &&
+ !(originalEvent.metaKey || originalEvent.ctrlKey) &&
+ !originalEvent.shiftKey);
+};
+
+
+/**
+ * Return `true` if only the platform-modifier-key (the meta-key on Mac,
+ * ctrl-key otherwise) is pressed, `false` otherwise (e.g. when additionally
+ * the shift-key is pressed).
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if only the platform modifier key is pressed.
+ * @api stable
+ */
+ol.events.condition.platformModifierKeyOnly = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return (
+ !originalEvent.altKey &&
+ (ol.has.MAC ? originalEvent.metaKey : originalEvent.ctrlKey) &&
+ !originalEvent.shiftKey);
+};
+
+
+/**
+ * Return `true` if only the shift-key is pressed, `false` otherwise (e.g. when
+ * additionally the alt-key is pressed).
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if only the shift key is pressed.
+ * @api stable
+ */
+ol.events.condition.shiftKeyOnly = function(mapBrowserEvent) {
+ var originalEvent = mapBrowserEvent.originalEvent;
+ return (
+ !originalEvent.altKey &&
+ !(originalEvent.metaKey || originalEvent.ctrlKey) &&
+ originalEvent.shiftKey);
+};
+
+
+/**
+ * Return `true` if the target element is not editable, i.e. not a `<input>`-,
+ * `<select>`- or `<textarea>`-element, `false` otherwise.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True only if the target element is not editable.
+ * @api
+ */
+ol.events.condition.targetNotEditable = function(mapBrowserEvent) {
+ var target = mapBrowserEvent.originalEvent.target;
+ goog.asserts.assertInstanceof(target, Element,
+ 'target should be an Element');
+ var tagName = target.tagName;
+ return (
+ tagName !== 'INPUT' &&
+ tagName !== 'SELECT' &&
+ tagName !== 'TEXTAREA');
+};
+
+
+/**
+ * Return `true` if the event originates from a mouse device.
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event originates from a mouse device.
+ * @api stable
+ */
+ol.events.condition.mouseOnly = function(mapBrowserEvent) {
+ // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType
+ goog.asserts.assertInstanceof(mapBrowserEvent, ol.MapBrowserPointerEvent,
+ 'Requires an ol.MapBrowserPointerEvent to work.');
+ return mapBrowserEvent.pointerEvent.pointerType == 'mouse';
+};
+
+
+/**
+ * Return `true` if the event originates from a primary pointer in
+ * contact with the surface or if the left mouse button is pressed.
+ * @see http://www.w3.org/TR/pointerevents/#button-states
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event originates from a primary pointer.
+ * @api
+ */
+ol.events.condition.primaryAction = function(mapBrowserEvent) {
+ var pointerEvent = mapBrowserEvent.pointerEvent;
+ return pointerEvent.isPrimary && pointerEvent.button === 0;
+};
+
+goog.provide('ol.interaction.Pointer');
+
+goog.require('ol');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.MapBrowserPointerEvent');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.object');
+
+
+/**
+ * @classdesc
+ * Base class that calls user-defined functions on `down`, `move` and `up`
+ * events. This class also manages "drag sequences".
+ *
+ * When the `handleDownEvent` user function returns `true` a drag sequence is
+ * started. During a drag sequence the `handleDragEvent` user function is
+ * called on `move` events. The drag sequence ends when the `handleUpEvent`
+ * user function is called and returns `false`.
+ *
+ * @constructor
+ * @param {olx.interaction.PointerOptions=} opt_options Options.
+ * @extends {ol.interaction.Interaction}
+ * @api
+ */
+ol.interaction.Pointer = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var handleEvent = options.handleEvent ?
+ options.handleEvent : ol.interaction.Pointer.handleEvent;
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: handleEvent
+ });
+
+ /**
+ * @type {function(ol.MapBrowserPointerEvent):boolean}
+ * @private
+ */
+ this.handleDownEvent_ = options.handleDownEvent ?
+ options.handleDownEvent : ol.interaction.Pointer.handleDownEvent;
+
+ /**
+ * @type {function(ol.MapBrowserPointerEvent)}
+ * @private
+ */
+ this.handleDragEvent_ = options.handleDragEvent ?
+ options.handleDragEvent : ol.interaction.Pointer.handleDragEvent;
+
+ /**
+ * @type {function(ol.MapBrowserPointerEvent)}
+ * @private
+ */
+ this.handleMoveEvent_ = options.handleMoveEvent ?
+ options.handleMoveEvent : ol.interaction.Pointer.handleMoveEvent;
+
+ /**
+ * @type {function(ol.MapBrowserPointerEvent):boolean}
+ * @private
+ */
+ this.handleUpEvent_ = options.handleUpEvent ?
+ options.handleUpEvent : ol.interaction.Pointer.handleUpEvent;
+
+ /**
+ * @type {boolean}
+ * @protected
+ */
+ this.handlingDownUpSequence = false;
+
+ /**
+ * @type {Object.<number, ol.pointer.PointerEvent>}
+ * @private
+ */
+ this.trackedPointers_ = {};
+
+ /**
+ * @type {Array.<ol.pointer.PointerEvent>}
+ * @protected
+ */
+ this.targetPointers = [];
+
+};
+ol.inherits(ol.interaction.Pointer, ol.interaction.Interaction);
+
+
+/**
+ * @param {Array.<ol.pointer.PointerEvent>} pointerEvents List of events.
+ * @return {ol.Pixel} Centroid pixel.
+ */
+ol.interaction.Pointer.centroid = function(pointerEvents) {
+ var length = pointerEvents.length;
+ var clientX = 0;
+ var clientY = 0;
+ for (var i = 0; i < length; i++) {
+ clientX += pointerEvents[i].clientX;
+ clientY += pointerEvents[i].clientY;
+ }
+ return [clientX / length, clientY / length];
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Whether the event is a pointerdown, pointerdrag
+ * or pointerup event.
+ * @private
+ */
+ol.interaction.Pointer.prototype.isPointerDraggingEvent_ = function(mapBrowserEvent) {
+ var type = mapBrowserEvent.type;
+ return (
+ type === ol.MapBrowserEvent.EventType.POINTERDOWN ||
+ type === ol.MapBrowserEvent.EventType.POINTERDRAG ||
+ type === ol.MapBrowserEvent.EventType.POINTERUP);
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @private
+ */
+ol.interaction.Pointer.prototype.updateTrackedPointers_ = function(mapBrowserEvent) {
+ if (this.isPointerDraggingEvent_(mapBrowserEvent)) {
+ var event = mapBrowserEvent.pointerEvent;
+
+ if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERUP) {
+ delete this.trackedPointers_[event.pointerId];
+ } else if (mapBrowserEvent.type ==
+ ol.MapBrowserEvent.EventType.POINTERDOWN) {
+ this.trackedPointers_[event.pointerId] = event;
+ } else if (event.pointerId in this.trackedPointers_) {
+ // update only when there was a pointerdown event for this pointer
+ this.trackedPointers_[event.pointerId] = event;
+ }
+ this.targetPointers = ol.object.getValues(this.trackedPointers_);
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.Pointer}
+ */
+ol.interaction.Pointer.handleDragEvent = ol.nullFunction;
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Capture dragging.
+ * @this {ol.interaction.Pointer}
+ */
+ol.interaction.Pointer.handleUpEvent = ol.functions.FALSE;
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Capture dragging.
+ * @this {ol.interaction.Pointer}
+ */
+ol.interaction.Pointer.handleDownEvent = ol.functions.FALSE;
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.Pointer}
+ */
+ol.interaction.Pointer.handleMoveEvent = ol.nullFunction;
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} and may call into
+ * other functions, if event sequences like e.g. 'drag' or 'down-up' etc. are
+ * detected.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.Pointer}
+ * @api
+ */
+ol.interaction.Pointer.handleEvent = function(mapBrowserEvent) {
+ if (!(mapBrowserEvent instanceof ol.MapBrowserPointerEvent)) {
+ return true;
+ }
+
+ var stopEvent = false;
+ this.updateTrackedPointers_(mapBrowserEvent);
+ if (this.handlingDownUpSequence) {
+ if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERDRAG) {
+ this.handleDragEvent_(mapBrowserEvent);
+ } else if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERUP) {
+ this.handlingDownUpSequence = this.handleUpEvent_(mapBrowserEvent);
+ }
+ }
+ if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERDOWN) {
+ var handled = this.handleDownEvent_(mapBrowserEvent);
+ this.handlingDownUpSequence = handled;
+ stopEvent = this.shouldStopEvent(handled);
+ } else if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERMOVE) {
+ this.handleMoveEvent_(mapBrowserEvent);
+ }
+ return !stopEvent;
+};
+
+
+/**
+ * This method is used to determine if "down" events should be propagated to
+ * other interactions or should be stopped.
+ *
+ * The method receives the return code of the "handleDownEvent" function.
+ *
+ * By default this function is the "identity" function. It's overidden in
+ * child classes.
+ *
+ * @param {boolean} handled Was the event handled by the interaction?
+ * @return {boolean} Should the event be stopped?
+ * @protected
+ */
+ol.interaction.Pointer.prototype.shouldStopEvent = function(handled) {
+ return handled;
+};
+
+goog.provide('ol.interaction.DragPan');
+
+goog.require('goog.asserts');
+goog.require('ol.Kinetic');
+
+goog.require('ol.ViewHint');
+goog.require('ol.coordinate');
+goog.require('ol.functions');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @classdesc
+ * Allows the user to pan the map by dragging the map.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.DragPanOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragPan = function(opt_options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.DragPan.handleDownEvent_,
+ handleDragEvent: ol.interaction.DragPan.handleDragEvent_,
+ handleUpEvent: ol.interaction.DragPan.handleUpEvent_
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {ol.Kinetic|undefined}
+ */
+ this.kinetic_ = options.kinetic;
+
+ /**
+ * @private
+ * @type {?ol.PreRenderFunction}
+ */
+ this.kineticPreRenderFn_ = null;
+
+ /**
+ * @type {ol.Pixel}
+ */
+ this.lastCentroid = null;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.noModifierKeys;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.noKinetic_ = false;
+
+};
+ol.inherits(ol.interaction.DragPan, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.DragPan}
+ * @private
+ */
+ol.interaction.DragPan.handleDragEvent_ = function(mapBrowserEvent) {
+ goog.asserts.assert(this.targetPointers.length >= 1,
+ 'the length of this.targetPointers should be more than 1');
+ var centroid =
+ ol.interaction.Pointer.centroid(this.targetPointers);
+ if (this.kinetic_) {
+ this.kinetic_.update(centroid[0], centroid[1]);
+ }
+ if (this.lastCentroid) {
+ var deltaX = this.lastCentroid[0] - centroid[0];
+ var deltaY = centroid[1] - this.lastCentroid[1];
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ var viewState = view.getState();
+ var center = [deltaX, deltaY];
+ ol.coordinate.scale(center, viewState.resolution);
+ ol.coordinate.rotate(center, viewState.rotation);
+ ol.coordinate.add(center, viewState.center);
+ center = view.constrainCenter(center);
+ map.render();
+ view.setCenter(center);
+ }
+ this.lastCentroid = centroid;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.DragPan}
+ * @private
+ */
+ol.interaction.DragPan.handleUpEvent_ = function(mapBrowserEvent) {
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ if (this.targetPointers.length === 0) {
+ if (!this.noKinetic_ && this.kinetic_ && this.kinetic_.end()) {
+ var distance = this.kinetic_.getDistance();
+ var angle = this.kinetic_.getAngle();
+ var center = view.getCenter();
+ goog.asserts.assert(center !== undefined, 'center should be defined');
+ this.kineticPreRenderFn_ = this.kinetic_.pan(center);
+ map.beforeRender(this.kineticPreRenderFn_);
+ var centerpx = map.getPixelFromCoordinate(center);
+ var dest = map.getCoordinateFromPixel([
+ centerpx[0] - distance * Math.cos(angle),
+ centerpx[1] - distance * Math.sin(angle)
+ ]);
+ dest = view.constrainCenter(dest);
+ view.setCenter(dest);
+ }
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ map.render();
+ return false;
+ } else {
+ this.lastCentroid = null;
+ return true;
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.DragPan}
+ * @private
+ */
+ol.interaction.DragPan.handleDownEvent_ = function(mapBrowserEvent) {
+ if (this.targetPointers.length > 0 && this.condition_(mapBrowserEvent)) {
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ this.lastCentroid = null;
+ if (!this.handlingDownUpSequence) {
+ view.setHint(ol.ViewHint.INTERACTING, 1);
+ }
+ map.render();
+ if (this.kineticPreRenderFn_ &&
+ map.removePreRenderFunction(this.kineticPreRenderFn_)) {
+ view.setCenter(mapBrowserEvent.frameState.viewState.center);
+ this.kineticPreRenderFn_ = null;
+ }
+ if (this.kinetic_) {
+ this.kinetic_.begin();
+ }
+ // No kinetic as soon as more than one pointer on the screen is
+ // detected. This is to prevent nasty pans after pinch.
+ this.noKinetic_ = this.targetPointers.length > 1;
+ return true;
+ } else {
+ return false;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragPan.prototype.shouldStopEvent = ol.functions.FALSE;
+
+goog.provide('ol.interaction.DragRotate');
+
+goog.require('ol');
+goog.require('ol.ViewHint');
+goog.require('ol.functions');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @classdesc
+ * Allows the user to rotate the map by clicking and dragging on the map,
+ * normally combined with an {@link ol.events.condition} that limits
+ * it to when the alt and shift keys are held down.
+ *
+ * This interaction is only supported for mouse devices.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.DragRotateOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragRotate = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.DragRotate.handleDownEvent_,
+ handleDragEvent: ol.interaction.DragRotate.handleDragEvent_,
+ handleUpEvent: ol.interaction.DragRotate.handleUpEvent_
+ });
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.altShiftKeysOnly;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.lastAngle_ = undefined;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+};
+ol.inherits(ol.interaction.DragRotate, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.DragRotate}
+ * @private
+ */
+ol.interaction.DragRotate.handleDragEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return;
+ }
+
+ var map = mapBrowserEvent.map;
+ var size = map.getSize();
+ var offset = mapBrowserEvent.pixel;
+ var theta =
+ Math.atan2(size[1] / 2 - offset[1], offset[0] - size[0] / 2);
+ if (this.lastAngle_ !== undefined) {
+ var delta = theta - this.lastAngle_;
+ var view = map.getView();
+ var rotation = view.getRotation();
+ map.render();
+ ol.interaction.Interaction.rotateWithoutConstraints(
+ map, view, rotation - delta);
+ }
+ this.lastAngle_ = theta;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.DragRotate}
+ * @private
+ */
+ol.interaction.DragRotate.handleUpEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return true;
+ }
+
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ var rotation = view.getRotation();
+ ol.interaction.Interaction.rotate(map, view, rotation,
+ undefined, this.duration_);
+ return false;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.DragRotate}
+ * @private
+ */
+ol.interaction.DragRotate.handleDownEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return false;
+ }
+
+ if (ol.events.condition.mouseActionButton(mapBrowserEvent) &&
+ this.condition_(mapBrowserEvent)) {
+ var map = mapBrowserEvent.map;
+ map.getView().setHint(ol.ViewHint.INTERACTING, 1);
+ map.render();
+ this.lastAngle_ = undefined;
+ return true;
+ } else {
+ return false;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragRotate.prototype.shouldStopEvent = ol.functions.FALSE;
+
+// FIXME add rotation
+
+goog.provide('ol.render.Box');
+
+goog.require('goog.asserts');
+goog.require('ol.Disposable');
+goog.require('ol.geom.Polygon');
+
+
+/**
+ * @constructor
+ * @extends {ol.Disposable}
+ * @param {string} className CSS class name.
+ */
+ol.render.Box = function(className) {
+
+ /**
+ * @type {ol.geom.Polygon}
+ * @private
+ */
+ this.geometry_ = null;
+
+ /**
+ * @type {HTMLDivElement}
+ * @private
+ */
+ this.element_ = /** @type {HTMLDivElement} */ (document.createElement('div'));
+ this.element_.style.position = 'absolute';
+ this.element_.className = 'ol-box ' + className;
+
+ /**
+ * @private
+ * @type {ol.Map}
+ */
+ this.map_ = null;
+
+ /**
+ * @private
+ * @type {ol.Pixel}
+ */
+ this.startPixel_ = null;
+
+ /**
+ * @private
+ * @type {ol.Pixel}
+ */
+ this.endPixel_ = null;
+
+};
+ol.inherits(ol.render.Box, ol.Disposable);
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.Box.prototype.disposeInternal = function() {
+ this.setMap(null);
+};
+
+
+/**
+ * @private
+ */
+ol.render.Box.prototype.render_ = function() {
+ var startPixel = this.startPixel_;
+ var endPixel = this.endPixel_;
+ goog.asserts.assert(startPixel, 'this.startPixel_ must be truthy');
+ goog.asserts.assert(endPixel, 'this.endPixel_ must be truthy');
+ var px = 'px';
+ var style = this.element_.style;
+ style.left = Math.min(startPixel[0], endPixel[0]) + px;
+ style.top = Math.min(startPixel[1], endPixel[1]) + px;
+ style.width = Math.abs(endPixel[0] - startPixel[0]) + px;
+ style.height = Math.abs(endPixel[1] - startPixel[1]) + px;
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ */
+ol.render.Box.prototype.setMap = function(map) {
+ if (this.map_) {
+ this.map_.getOverlayContainer().removeChild(this.element_);
+ var style = this.element_.style;
+ style.left = style.top = style.width = style.height = 'inherit';
+ }
+ this.map_ = map;
+ if (this.map_) {
+ this.map_.getOverlayContainer().appendChild(this.element_);
+ }
+};
+
+
+/**
+ * @param {ol.Pixel} startPixel Start pixel.
+ * @param {ol.Pixel} endPixel End pixel.
+ */
+ol.render.Box.prototype.setPixels = function(startPixel, endPixel) {
+ this.startPixel_ = startPixel;
+ this.endPixel_ = endPixel;
+ this.createOrUpdateGeometry();
+ this.render_();
+};
+
+
+/**
+ * Creates or updates the cached geometry.
+ */
+ol.render.Box.prototype.createOrUpdateGeometry = function() {
+ goog.asserts.assert(this.startPixel_,
+ 'this.startPixel_ must be truthy');
+ goog.asserts.assert(this.endPixel_,
+ 'this.endPixel_ must be truthy');
+ goog.asserts.assert(this.map_, 'this.map_ must be truthy');
+ var startPixel = this.startPixel_;
+ var endPixel = this.endPixel_;
+ var pixels = [
+ startPixel,
+ [startPixel[0], endPixel[1]],
+ endPixel,
+ [endPixel[0], startPixel[1]]
+ ];
+ var coordinates = pixels.map(this.map_.getCoordinateFromPixel, this.map_);
+ // close the polygon
+ coordinates[4] = coordinates[0].slice();
+ if (!this.geometry_) {
+ this.geometry_ = new ol.geom.Polygon([coordinates]);
+ } else {
+ this.geometry_.setCoordinates([coordinates]);
+ }
+};
+
+
+/**
+ * @return {ol.geom.Polygon} Geometry.
+ */
+ol.render.Box.prototype.getGeometry = function() {
+ return this.geometry_;
+};
+
+// FIXME draw drag box
+goog.provide('ol.DragBoxEvent');
+goog.provide('ol.interaction.DragBox');
+
+goog.require('ol.events.Event');
+goog.require('ol');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Pointer');
+goog.require('ol.render.Box');
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.DRAG_BOX_HYSTERESIS_PIXELS_SQUARED =
+ ol.DRAG_BOX_HYSTERESIS_PIXELS *
+ ol.DRAG_BOX_HYSTERESIS_PIXELS;
+
+
+/**
+ * @enum {string}
+ */
+ol.DragBoxEventType = {
+ /**
+ * Triggered upon drag box start.
+ * @event ol.DragBoxEvent#boxstart
+ * @api stable
+ */
+ BOXSTART: 'boxstart',
+
+ /**
+ * Triggered on drag when box is active.
+ * @event ol.DragBoxEvent#boxdrag
+ * @api
+ */
+ BOXDRAG: 'boxdrag',
+
+ /**
+ * Triggered upon drag box end.
+ * @event ol.DragBoxEvent#boxend
+ * @api stable
+ */
+ BOXEND: 'boxend'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.DragBox} instances are instances of
+ * this type.
+ *
+ * @param {string} type The event type.
+ * @param {ol.Coordinate} coordinate The event coordinate.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Originating event.
+ * @extends {ol.events.Event}
+ * @constructor
+ * @implements {oli.DragBoxEvent}
+ */
+ol.DragBoxEvent = function(type, coordinate, mapBrowserEvent) {
+ ol.events.Event.call(this, type);
+
+ /**
+ * The coordinate of the drag event.
+ * @const
+ * @type {ol.Coordinate}
+ * @api stable
+ */
+ this.coordinate = coordinate;
+
+ /**
+ * @const
+ * @type {ol.MapBrowserEvent}
+ * @api
+ */
+ this.mapBrowserEvent = mapBrowserEvent;
+
+};
+ol.inherits(ol.DragBoxEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Allows the user to draw a vector box by clicking and dragging on the map,
+ * normally combined with an {@link ol.events.condition} that limits
+ * it to when the shift or other key is held down. This is used, for example,
+ * for zooming to a specific area of the map
+ * (see {@link ol.interaction.DragZoom} and
+ * {@link ol.interaction.DragRotateAndZoom}).
+ *
+ * This interaction is only supported for mouse devices.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @fires ol.DragBoxEvent
+ * @param {olx.interaction.DragBoxOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragBox = function(opt_options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.DragBox.handleDownEvent_,
+ handleDragEvent: ol.interaction.DragBox.handleDragEvent_,
+ handleUpEvent: ol.interaction.DragBox.handleUpEvent_
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @type {ol.render.Box}
+ * @private
+ */
+ this.box_ = new ol.render.Box(options.className || 'ol-dragbox');
+
+ /**
+ * @type {ol.Pixel}
+ * @private
+ */
+ this.startPixel_ = null;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.always;
+
+ /**
+ * @private
+ * @type {ol.DragBoxEndConditionType}
+ */
+ this.boxEndCondition_ = options.boxEndCondition ?
+ options.boxEndCondition : ol.interaction.DragBox.defaultBoxEndCondition;
+};
+ol.inherits(ol.interaction.DragBox, ol.interaction.Pointer);
+
+
+/**
+ * The default condition for determining whether the boxend event
+ * should fire.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent The originating MapBrowserEvent
+ * leading to the box end.
+ * @param {ol.Pixel} startPixel The starting pixel of the box.
+ * @param {ol.Pixel} endPixel The end pixel of the box.
+ * @return {boolean} Whether or not the boxend condition should be fired.
+ */
+ol.interaction.DragBox.defaultBoxEndCondition = function(mapBrowserEvent,
+ startPixel, endPixel) {
+ var width = endPixel[0] - startPixel[0];
+ var height = endPixel[1] - startPixel[1];
+ return width * width + height * height >=
+ ol.DRAG_BOX_HYSTERESIS_PIXELS_SQUARED;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.DragBox}
+ * @private
+ */
+ol.interaction.DragBox.handleDragEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return;
+ }
+
+ this.box_.setPixels(this.startPixel_, mapBrowserEvent.pixel);
+
+ this.dispatchEvent(new ol.DragBoxEvent(ol.DragBoxEventType.BOXDRAG,
+ mapBrowserEvent.coordinate, mapBrowserEvent));
+};
+
+
+/**
+ * Returns geometry of last drawn box.
+ * @return {ol.geom.Polygon} Geometry.
+ * @api stable
+ */
+ol.interaction.DragBox.prototype.getGeometry = function() {
+ return this.box_.getGeometry();
+};
+
+
+/**
+ * To be overriden by child classes.
+ * FIXME: use constructor option instead of relying on overridding.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @protected
+ */
+ol.interaction.DragBox.prototype.onBoxEnd = ol.nullFunction;
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.DragBox}
+ * @private
+ */
+ol.interaction.DragBox.handleUpEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return true;
+ }
+
+ this.box_.setMap(null);
+
+ if (this.boxEndCondition_(mapBrowserEvent,
+ this.startPixel_, mapBrowserEvent.pixel)) {
+ this.onBoxEnd(mapBrowserEvent);
+ this.dispatchEvent(new ol.DragBoxEvent(ol.DragBoxEventType.BOXEND,
+ mapBrowserEvent.coordinate, mapBrowserEvent));
+ }
+ return false;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.DragBox}
+ * @private
+ */
+ol.interaction.DragBox.handleDownEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return false;
+ }
+
+ if (ol.events.condition.mouseActionButton(mapBrowserEvent) &&
+ this.condition_(mapBrowserEvent)) {
+ this.startPixel_ = mapBrowserEvent.pixel;
+ this.box_.setMap(mapBrowserEvent.map);
+ this.box_.setPixels(this.startPixel_, this.startPixel_);
+ this.dispatchEvent(new ol.DragBoxEvent(ol.DragBoxEventType.BOXSTART,
+ mapBrowserEvent.coordinate, mapBrowserEvent));
+ return true;
+ } else {
+ return false;
+ }
+};
+
+goog.provide('ol.interaction.DragZoom');
+
+goog.require('goog.asserts');
+goog.require('ol.animation');
+goog.require('ol.easing');
+goog.require('ol.events.condition');
+goog.require('ol.extent');
+goog.require('ol.interaction.DragBox');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom the map by clicking and dragging on the map,
+ * normally combined with an {@link ol.events.condition} that limits
+ * it to when a key, shift by default, is held down.
+ *
+ * To change the style of the box, use CSS and the `.ol-dragzoom` selector, or
+ * your custom one configured with `className`.
+ *
+ * @constructor
+ * @extends {ol.interaction.DragBox}
+ * @param {olx.interaction.DragZoomOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragZoom = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ var condition = options.condition ?
+ options.condition : ol.events.condition.shiftKeyOnly;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 200;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.out_ = options.out !== undefined ? options.out : false;
+
+ ol.interaction.DragBox.call(this, {
+ condition: condition,
+ className: options.className || 'ol-dragzoom'
+ });
+
+};
+ol.inherits(ol.interaction.DragZoom, ol.interaction.DragBox);
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragZoom.prototype.onBoxEnd = function() {
+ var map = this.getMap();
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have view');
+
+ var size = map.getSize();
+ goog.asserts.assert(size !== undefined, 'size should be defined');
+
+ var extent = this.getGeometry().getExtent();
+
+ if (this.out_) {
+ var mapExtent = view.calculateExtent(size);
+ var boxPixelExtent = ol.extent.createOrUpdateFromCoordinates([
+ map.getPixelFromCoordinate(ol.extent.getBottomLeft(extent)),
+ map.getPixelFromCoordinate(ol.extent.getTopRight(extent))]);
+ var factor = view.getResolutionForExtent(boxPixelExtent, size);
+
+ ol.extent.scaleFromCenter(mapExtent, 1 / factor);
+ extent = mapExtent;
+ }
+
+ var resolution = view.constrainResolution(
+ view.getResolutionForExtent(extent, size));
+
+ var currentResolution = view.getResolution();
+ goog.asserts.assert(currentResolution !== undefined, 'res should be defined');
+
+ var currentCenter = view.getCenter();
+ goog.asserts.assert(currentCenter !== undefined, 'center should be defined');
+
+ map.beforeRender(ol.animation.zoom({
+ resolution: currentResolution,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+ map.beforeRender(ol.animation.pan({
+ source: currentCenter,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+
+ view.setCenter(ol.extent.getCenter(extent));
+ view.setResolution(resolution);
+};
+
+goog.provide('ol.interaction.KeyboardPan');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.coordinate');
+goog.require('ol.events.EventType');
+goog.require('ol.events.KeyCode');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Interaction');
+
+
+/**
+ * @classdesc
+ * Allows the user to pan the map using keyboard arrows.
+ * Note that, although this interaction is by default included in maps,
+ * the keys can only be used when browser focus is on the element to which
+ * the keyboard events are attached. By default, this is the map div,
+ * though you can change this with the `keyboardEventTarget` in
+ * {@link ol.Map}. `document` never loses focus but, for any other element,
+ * focus will have to be on, and returned to, this element if the keys are to
+ * function.
+ * See also {@link ol.interaction.KeyboardZoom}.
+ *
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @param {olx.interaction.KeyboardPanOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.KeyboardPan = function(opt_options) {
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.KeyboardPan.handleEvent
+ });
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Browser event.
+ * @return {boolean} Combined condition result.
+ */
+ this.defaultCondition_ = function(mapBrowserEvent) {
+ return ol.events.condition.noModifierKeys(mapBrowserEvent) &&
+ ol.events.condition.targetNotEditable(mapBrowserEvent);
+ };
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition !== undefined ?
+ options.condition : this.defaultCondition_;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 100;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.pixelDelta_ = options.pixelDelta !== undefined ?
+ options.pixelDelta : 128;
+
+};
+ol.inherits(ol.interaction.KeyboardPan, ol.interaction.Interaction);
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} if it was a
+ * `KeyEvent`, and decides the direction to pan to (if an arrow key was
+ * pressed).
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.KeyboardPan}
+ * @api
+ */
+ol.interaction.KeyboardPan.handleEvent = function(mapBrowserEvent) {
+ var stopEvent = false;
+ if (mapBrowserEvent.type == ol.events.EventType.KEYDOWN) {
+ var keyEvent = mapBrowserEvent.originalEvent;
+ var keyCode = keyEvent.keyCode;
+ if (this.condition_(mapBrowserEvent) &&
+ (keyCode == ol.events.KeyCode.DOWN ||
+ keyCode == ol.events.KeyCode.LEFT ||
+ keyCode == ol.events.KeyCode.RIGHT ||
+ keyCode == ol.events.KeyCode.UP)) {
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have view');
+ var mapUnitsDelta = view.getResolution() * this.pixelDelta_;
+ var deltaX = 0, deltaY = 0;
+ if (keyCode == ol.events.KeyCode.DOWN) {
+ deltaY = -mapUnitsDelta;
+ } else if (keyCode == ol.events.KeyCode.LEFT) {
+ deltaX = -mapUnitsDelta;
+ } else if (keyCode == ol.events.KeyCode.RIGHT) {
+ deltaX = mapUnitsDelta;
+ } else {
+ deltaY = mapUnitsDelta;
+ }
+ var delta = [deltaX, deltaY];
+ ol.coordinate.rotate(delta, view.getRotation());
+ ol.interaction.Interaction.pan(map, view, delta, this.duration_);
+ mapBrowserEvent.preventDefault();
+ stopEvent = true;
+ }
+ }
+ return !stopEvent;
+};
+
+goog.provide('ol.interaction.KeyboardZoom');
+
+goog.require('goog.asserts');
+goog.require('ol.events.EventType');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Interaction');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom the map using keyboard + and -.
+ * Note that, although this interaction is by default included in maps,
+ * the keys can only be used when browser focus is on the element to which
+ * the keyboard events are attached. By default, this is the map div,
+ * though you can change this with the `keyboardEventTarget` in
+ * {@link ol.Map}. `document` never loses focus but, for any other element,
+ * focus will have to be on, and returned to, this element if the keys are to
+ * function.
+ * See also {@link ol.interaction.KeyboardPan}.
+ *
+ * @constructor
+ * @param {olx.interaction.KeyboardZoomOptions=} opt_options Options.
+ * @extends {ol.interaction.Interaction}
+ * @api stable
+ */
+ol.interaction.KeyboardZoom = function(opt_options) {
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.KeyboardZoom.handleEvent
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ? options.condition :
+ ol.events.condition.targetNotEditable;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.delta_ = options.delta ? options.delta : 1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 100;
+
+};
+ol.inherits(ol.interaction.KeyboardZoom, ol.interaction.Interaction);
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} if it was a
+ * `KeyEvent`, and decides whether to zoom in or out (depending on whether the
+ * key pressed was '+' or '-').
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.KeyboardZoom}
+ * @api
+ */
+ol.interaction.KeyboardZoom.handleEvent = function(mapBrowserEvent) {
+ var stopEvent = false;
+ if (mapBrowserEvent.type == ol.events.EventType.KEYDOWN ||
+ mapBrowserEvent.type == ol.events.EventType.KEYPRESS) {
+ var keyEvent = mapBrowserEvent.originalEvent;
+ var charCode = keyEvent.charCode;
+ if (this.condition_(mapBrowserEvent) &&
+ (charCode == '+'.charCodeAt(0) || charCode == '-'.charCodeAt(0))) {
+ var map = mapBrowserEvent.map;
+ var delta = (charCode == '+'.charCodeAt(0)) ? this.delta_ : -this.delta_;
+ map.render();
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have view');
+ ol.interaction.Interaction.zoomByDelta(
+ map, view, delta, undefined, this.duration_);
+ mapBrowserEvent.preventDefault();
+ stopEvent = true;
+ }
+ }
+ return !stopEvent;
+};
+
+goog.provide('ol.interaction.MouseWheelZoom');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.events.EventType');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom the map by scrolling the mouse wheel.
+ *
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @param {olx.interaction.MouseWheelZoomOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.MouseWheelZoom = function(opt_options) {
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.MouseWheelZoom.handleEvent
+ });
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.delta_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.useAnchor_ = options.useAnchor !== undefined ? options.useAnchor : true;
+
+ /**
+ * @private
+ * @type {?ol.Coordinate}
+ */
+ this.lastAnchor_ = null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.startTime_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.timeoutId_ = undefined;
+
+};
+ol.inherits(ol.interaction.MouseWheelZoom, ol.interaction.Interaction);
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} (if it was a
+ * mousewheel-event) and eventually zooms the map.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.MouseWheelZoom}
+ * @api
+ */
+ol.interaction.MouseWheelZoom.handleEvent = function(mapBrowserEvent) {
+ var stopEvent = false;
+ if (mapBrowserEvent.type == ol.events.EventType.WHEEL ||
+ mapBrowserEvent.type == ol.events.EventType.MOUSEWHEEL) {
+ var map = mapBrowserEvent.map;
+ var wheelEvent = /** @type {WheelEvent} */ (mapBrowserEvent.originalEvent);
+
+ if (this.useAnchor_) {
+ this.lastAnchor_ = mapBrowserEvent.coordinate;
+ }
+
+ // Delta normalisation inspired by
+ // https://github.com/mapbox/mapbox-gl-js/blob/001c7b9/js/ui/handler/scroll_zoom.js
+ //TODO There's more good stuff in there for inspiration to improve this interaction.
+ var delta;
+ if (mapBrowserEvent.type == ol.events.EventType.WHEEL) {
+ delta = wheelEvent.deltaY;
+ if (ol.has.FIREFOX &&
+ wheelEvent.deltaMode === ol.global.WheelEvent.DOM_DELTA_PIXEL) {
+ delta /= ol.has.DEVICE_PIXEL_RATIO;
+ }
+ if (wheelEvent.deltaMode === ol.global.WheelEvent.DOM_DELTA_LINE) {
+ delta *= 40;
+ }
+ } else if (mapBrowserEvent.type == ol.events.EventType.MOUSEWHEEL) {
+ delta = -wheelEvent.wheelDeltaY;
+ if (ol.has.SAFARI) {
+ delta /= 3;
+ }
+ }
+
+ this.delta_ += delta;
+
+ if (this.startTime_ === undefined) {
+ this.startTime_ = Date.now();
+ }
+
+ var duration = ol.MOUSEWHEELZOOM_TIMEOUT_DURATION;
+ var timeLeft = Math.max(duration - (Date.now() - this.startTime_), 0);
+
+ ol.global.clearTimeout(this.timeoutId_);
+ this.timeoutId_ = ol.global.setTimeout(
+ this.doZoom_.bind(this, map), timeLeft);
+
+ mapBrowserEvent.preventDefault();
+ stopEvent = true;
+ }
+ return !stopEvent;
+};
+
+
+/**
+ * @private
+ * @param {ol.Map} map Map.
+ */
+ol.interaction.MouseWheelZoom.prototype.doZoom_ = function(map) {
+ var maxDelta = ol.MOUSEWHEELZOOM_MAXDELTA;
+ var delta = ol.math.clamp(this.delta_, -maxDelta, maxDelta);
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have view');
+
+ map.render();
+ ol.interaction.Interaction.zoomByDelta(map, view, -delta, this.lastAnchor_,
+ this.duration_);
+
+ this.delta_ = 0;
+ this.lastAnchor_ = null;
+ this.startTime_ = undefined;
+ this.timeoutId_ = undefined;
+};
+
+
+/**
+ * Enable or disable using the mouse's location as an anchor when zooming
+ * @param {boolean} useAnchor true to zoom to the mouse's location, false
+ * to zoom to the center of the map
+ * @api
+ */
+ol.interaction.MouseWheelZoom.prototype.setMouseAnchor = function(useAnchor) {
+ this.useAnchor_ = useAnchor;
+ if (!useAnchor) {
+ this.lastAnchor_ = null;
+ }
+};
+
+goog.provide('ol.interaction.PinchRotate');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.functions');
+goog.require('ol.ViewHint');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @classdesc
+ * Allows the user to rotate the map by twisting with two fingers
+ * on a touch screen.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.PinchRotateOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.PinchRotate = function(opt_options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.PinchRotate.handleDownEvent_,
+ handleDragEvent: ol.interaction.PinchRotate.handleDragEvent_,
+ handleUpEvent: ol.interaction.PinchRotate.handleUpEvent_
+ });
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.anchor_ = null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.lastAngle_ = undefined;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.rotating_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.rotationDelta_ = 0.0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.threshold_ = options.threshold !== undefined ? options.threshold : 0.3;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 250;
+
+};
+ol.inherits(ol.interaction.PinchRotate, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.PinchRotate}
+ * @private
+ */
+ol.interaction.PinchRotate.handleDragEvent_ = function(mapBrowserEvent) {
+ goog.asserts.assert(this.targetPointers.length >= 2,
+ 'length of this.targetPointers should be greater than or equal to 2');
+ var rotationDelta = 0.0;
+
+ var touch0 = this.targetPointers[0];
+ var touch1 = this.targetPointers[1];
+
+ // angle between touches
+ var angle = Math.atan2(
+ touch1.clientY - touch0.clientY,
+ touch1.clientX - touch0.clientX);
+
+ if (this.lastAngle_ !== undefined) {
+ var delta = angle - this.lastAngle_;
+ this.rotationDelta_ += delta;
+ if (!this.rotating_ &&
+ Math.abs(this.rotationDelta_) > this.threshold_) {
+ this.rotating_ = true;
+ }
+ rotationDelta = delta;
+ }
+ this.lastAngle_ = angle;
+
+ var map = mapBrowserEvent.map;
+
+ // rotate anchor point.
+ // FIXME: should be the intersection point between the lines:
+ // touch0,touch1 and previousTouch0,previousTouch1
+ var viewportPosition = map.getViewport().getBoundingClientRect();
+ var centroid = ol.interaction.Pointer.centroid(this.targetPointers);
+ centroid[0] -= viewportPosition.left;
+ centroid[1] -= viewportPosition.top;
+ this.anchor_ = map.getCoordinateFromPixel(centroid);
+
+ // rotate
+ if (this.rotating_) {
+ var view = map.getView();
+ var rotation = view.getRotation();
+ map.render();
+ ol.interaction.Interaction.rotateWithoutConstraints(map, view,
+ rotation + rotationDelta, this.anchor_);
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.PinchRotate}
+ * @private
+ */
+ol.interaction.PinchRotate.handleUpEvent_ = function(mapBrowserEvent) {
+ if (this.targetPointers.length < 2) {
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ if (this.rotating_) {
+ var rotation = view.getRotation();
+ ol.interaction.Interaction.rotate(
+ map, view, rotation, this.anchor_, this.duration_);
+ }
+ return false;
+ } else {
+ return true;
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.PinchRotate}
+ * @private
+ */
+ol.interaction.PinchRotate.handleDownEvent_ = function(mapBrowserEvent) {
+ if (this.targetPointers.length >= 2) {
+ var map = mapBrowserEvent.map;
+ this.anchor_ = null;
+ this.lastAngle_ = undefined;
+ this.rotating_ = false;
+ this.rotationDelta_ = 0.0;
+ if (!this.handlingDownUpSequence) {
+ map.getView().setHint(ol.ViewHint.INTERACTING, 1);
+ }
+ map.render();
+ return true;
+ } else {
+ return false;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.PinchRotate.prototype.shouldStopEvent = ol.functions.FALSE;
+
+goog.provide('ol.interaction.PinchZoom');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.functions');
+goog.require('ol.ViewHint');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom the map by pinching with two fingers
+ * on a touch screen.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.PinchZoomOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.PinchZoom = function(opt_options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.PinchZoom.handleDownEvent_,
+ handleDragEvent: ol.interaction.PinchZoom.handleDragEvent_,
+ handleUpEvent: ol.interaction.PinchZoom.handleUpEvent_
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.anchor_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 400;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.lastDistance_ = undefined;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.lastScaleDelta_ = 1;
+
+};
+ol.inherits(ol.interaction.PinchZoom, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.PinchZoom}
+ * @private
+ */
+ol.interaction.PinchZoom.handleDragEvent_ = function(mapBrowserEvent) {
+ goog.asserts.assert(this.targetPointers.length >= 2,
+ 'length of this.targetPointers should be 2 or more');
+ var scaleDelta = 1.0;
+
+ var touch0 = this.targetPointers[0];
+ var touch1 = this.targetPointers[1];
+ var dx = touch0.clientX - touch1.clientX;
+ var dy = touch0.clientY - touch1.clientY;
+
+ // distance between touches
+ var distance = Math.sqrt(dx * dx + dy * dy);
+
+ if (this.lastDistance_ !== undefined) {
+ scaleDelta = this.lastDistance_ / distance;
+ }
+ this.lastDistance_ = distance;
+ if (scaleDelta != 1.0) {
+ this.lastScaleDelta_ = scaleDelta;
+ }
+
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ var resolution = view.getResolution();
+
+ // scale anchor point.
+ var viewportPosition = map.getViewport().getBoundingClientRect();
+ var centroid = ol.interaction.Pointer.centroid(this.targetPointers);
+ centroid[0] -= viewportPosition.left;
+ centroid[1] -= viewportPosition.top;
+ this.anchor_ = map.getCoordinateFromPixel(centroid);
+
+ // scale, bypass the resolution constraint
+ map.render();
+ ol.interaction.Interaction.zoomWithoutConstraints(
+ map, view, resolution * scaleDelta, this.anchor_);
+
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.PinchZoom}
+ * @private
+ */
+ol.interaction.PinchZoom.handleUpEvent_ = function(mapBrowserEvent) {
+ if (this.targetPointers.length < 2) {
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ var resolution = view.getResolution();
+ // Zoom to final resolution, with an animation, and provide a
+ // direction not to zoom out/in if user was pinching in/out.
+ // Direction is > 0 if pinching out, and < 0 if pinching in.
+ var direction = this.lastScaleDelta_ - 1;
+ ol.interaction.Interaction.zoom(map, view, resolution,
+ this.anchor_, this.duration_, direction);
+ return false;
+ } else {
+ return true;
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.PinchZoom}
+ * @private
+ */
+ol.interaction.PinchZoom.handleDownEvent_ = function(mapBrowserEvent) {
+ if (this.targetPointers.length >= 2) {
+ var map = mapBrowserEvent.map;
+ this.anchor_ = null;
+ this.lastDistance_ = undefined;
+ this.lastScaleDelta_ = 1;
+ if (!this.handlingDownUpSequence) {
+ map.getView().setHint(ol.ViewHint.INTERACTING, 1);
+ }
+ map.render();
+ return true;
+ } else {
+ return false;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.PinchZoom.prototype.shouldStopEvent = ol.functions.FALSE;
+
+goog.provide('ol.interaction');
+
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.Kinetic');
+goog.require('ol.interaction.DoubleClickZoom');
+goog.require('ol.interaction.DragPan');
+goog.require('ol.interaction.DragRotate');
+goog.require('ol.interaction.DragZoom');
+goog.require('ol.interaction.KeyboardPan');
+goog.require('ol.interaction.KeyboardZoom');
+goog.require('ol.interaction.MouseWheelZoom');
+goog.require('ol.interaction.PinchRotate');
+goog.require('ol.interaction.PinchZoom');
+
+
+/**
+ * Set of interactions included in maps by default. Specific interactions can be
+ * excluded by setting the appropriate option to false in the constructor
+ * options, but the order of the interactions is fixed. If you want to specify
+ * a different order for interactions, you will need to create your own
+ * {@link ol.interaction.Interaction} instances and insert them into a
+ * {@link ol.Collection} in the order you want before creating your
+ * {@link ol.Map} instance. The default set of interactions, in sequence, is:
+ * * {@link ol.interaction.DragRotate}
+ * * {@link ol.interaction.DoubleClickZoom}
+ * * {@link ol.interaction.DragPan}
+ * * {@link ol.interaction.PinchRotate}
+ * * {@link ol.interaction.PinchZoom}
+ * * {@link ol.interaction.KeyboardPan}
+ * * {@link ol.interaction.KeyboardZoom}
+ * * {@link ol.interaction.MouseWheelZoom}
+ * * {@link ol.interaction.DragZoom}
+ *
+ * @param {olx.interaction.DefaultsOptions=} opt_options Defaults options.
+ * @return {ol.Collection.<ol.interaction.Interaction>} A collection of
+ * interactions to be used with the ol.Map constructor's interactions option.
+ * @api stable
+ */
+ol.interaction.defaults = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var interactions = new ol.Collection();
+
+ var kinetic = new ol.Kinetic(-0.005, 0.05, 100);
+
+ var altShiftDragRotate = options.altShiftDragRotate !== undefined ?
+ options.altShiftDragRotate : true;
+ if (altShiftDragRotate) {
+ interactions.push(new ol.interaction.DragRotate());
+ }
+
+ var doubleClickZoom = options.doubleClickZoom !== undefined ?
+ options.doubleClickZoom : true;
+ if (doubleClickZoom) {
+ interactions.push(new ol.interaction.DoubleClickZoom({
+ delta: options.zoomDelta,
+ duration: options.zoomDuration
+ }));
+ }
+
+ var dragPan = options.dragPan !== undefined ? options.dragPan : true;
+ if (dragPan) {
+ interactions.push(new ol.interaction.DragPan({
+ kinetic: kinetic
+ }));
+ }
+
+ var pinchRotate = options.pinchRotate !== undefined ? options.pinchRotate :
+ true;
+ if (pinchRotate) {
+ interactions.push(new ol.interaction.PinchRotate());
+ }
+
+ var pinchZoom = options.pinchZoom !== undefined ? options.pinchZoom : true;
+ if (pinchZoom) {
+ interactions.push(new ol.interaction.PinchZoom({
+ duration: options.zoomDuration
+ }));
+ }
+
+ var keyboard = options.keyboard !== undefined ? options.keyboard : true;
+ if (keyboard) {
+ interactions.push(new ol.interaction.KeyboardPan());
+ interactions.push(new ol.interaction.KeyboardZoom({
+ delta: options.zoomDelta,
+ duration: options.zoomDuration
+ }));
+ }
+
+ var mouseWheelZoom = options.mouseWheelZoom !== undefined ?
+ options.mouseWheelZoom : true;
+ if (mouseWheelZoom) {
+ interactions.push(new ol.interaction.MouseWheelZoom({
+ duration: options.zoomDuration
+ }));
+ }
+
+ var shiftDragZoom = options.shiftDragZoom !== undefined ?
+ options.shiftDragZoom : true;
+ if (shiftDragZoom) {
+ interactions.push(new ol.interaction.DragZoom({
+ duration: options.zoomDuration
+ }));
+ }
+
+ return interactions;
+
+};
+
+goog.provide('ol.layer.Group');
+
+goog.require('goog.asserts');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEvent');
+goog.require('ol.CollectionEventType');
+goog.require('ol.Object');
+goog.require('ol.ObjectEventType');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.layer.Base');
+goog.require('ol.object');
+goog.require('ol.source.State');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.GroupProperty = {
+ LAYERS: 'layers'
+};
+
+
+/**
+ * @classdesc
+ * A {@link ol.Collection} of layers that are handled together.
+ *
+ * A generic `change` event is triggered when the group/Collection changes.
+ *
+ * @constructor
+ * @extends {ol.layer.Base}
+ * @param {olx.layer.GroupOptions=} opt_options Layer options.
+ * @api stable
+ */
+ol.layer.Group = function(opt_options) {
+
+ var options = opt_options || {};
+ var baseOptions = /** @type {olx.layer.GroupOptions} */
+ (ol.object.assign({}, options));
+ delete baseOptions.layers;
+
+ var layers = options.layers;
+
+ ol.layer.Base.call(this, baseOptions);
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.layersListenerKeys_ = [];
+
+ /**
+ * @private
+ * @type {Object.<string, Array.<ol.EventsKey>>}
+ */
+ this.listenerKeys_ = {};
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.layer.GroupProperty.LAYERS),
+ this.handleLayersChanged_, this);
+
+ if (layers) {
+ if (Array.isArray(layers)) {
+ layers = new ol.Collection(layers.slice());
+ } else {
+ goog.asserts.assertInstanceof(layers, ol.Collection,
+ 'layers should be an ol.Collection');
+ layers = layers;
+ }
+ } else {
+ layers = new ol.Collection();
+ }
+
+ this.setLayers(layers);
+
+};
+ol.inherits(ol.layer.Group, ol.layer.Base);
+
+
+/**
+ * @private
+ */
+ol.layer.Group.prototype.handleLayerChange_ = function() {
+ if (this.getVisible()) {
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.events.Event} event Event.
+ * @private
+ */
+ol.layer.Group.prototype.handleLayersChanged_ = function(event) {
+ this.layersListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.layersListenerKeys_.length = 0;
+
+ var layers = this.getLayers();
+ this.layersListenerKeys_.push(
+ ol.events.listen(layers, ol.CollectionEventType.ADD,
+ this.handleLayersAdd_, this),
+ ol.events.listen(layers, ol.CollectionEventType.REMOVE,
+ this.handleLayersRemove_, this));
+
+ for (var id in this.listenerKeys_) {
+ this.listenerKeys_[id].forEach(ol.events.unlistenByKey);
+ }
+ ol.object.clear(this.listenerKeys_);
+
+ var layersArray = layers.getArray();
+ var i, ii, layer;
+ for (i = 0, ii = layersArray.length; i < ii; i++) {
+ layer = layersArray[i];
+ this.listenerKeys_[goog.getUid(layer).toString()] = [
+ ol.events.listen(layer, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleLayerChange_, this),
+ ol.events.listen(layer, ol.events.EventType.CHANGE,
+ this.handleLayerChange_, this)
+ ];
+ }
+
+ this.changed();
+};
+
+
+/**
+ * @param {ol.CollectionEvent} collectionEvent Collection event.
+ * @private
+ */
+ol.layer.Group.prototype.handleLayersAdd_ = function(collectionEvent) {
+ var layer = /** @type {ol.layer.Base} */ (collectionEvent.element);
+ var key = goog.getUid(layer).toString();
+ goog.asserts.assert(!(key in this.listenerKeys_),
+ 'listeners already registered');
+ this.listenerKeys_[key] = [
+ ol.events.listen(layer, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleLayerChange_, this),
+ ol.events.listen(layer, ol.events.EventType.CHANGE,
+ this.handleLayerChange_, this)
+ ];
+ this.changed();
+};
+
+
+/**
+ * @param {ol.CollectionEvent} collectionEvent Collection event.
+ * @private
+ */
+ol.layer.Group.prototype.handleLayersRemove_ = function(collectionEvent) {
+ var layer = /** @type {ol.layer.Base} */ (collectionEvent.element);
+ var key = goog.getUid(layer).toString();
+ goog.asserts.assert(key in this.listenerKeys_, 'no listeners to unregister');
+ this.listenerKeys_[key].forEach(ol.events.unlistenByKey);
+ delete this.listenerKeys_[key];
+ this.changed();
+};
+
+
+/**
+ * Returns the {@link ol.Collection collection} of {@link ol.layer.Layer layers}
+ * in this group.
+ * @return {!ol.Collection.<ol.layer.Base>} Collection of
+ * {@link ol.layer.Base layers} that are part of this group.
+ * @observable
+ * @api stable
+ */
+ol.layer.Group.prototype.getLayers = function() {
+ return /** @type {!ol.Collection.<ol.layer.Base>} */ (this.get(
+ ol.layer.GroupProperty.LAYERS));
+};
+
+
+/**
+ * Set the {@link ol.Collection collection} of {@link ol.layer.Layer layers}
+ * in this group.
+ * @param {!ol.Collection.<ol.layer.Base>} layers Collection of
+ * {@link ol.layer.Base layers} that are part of this group.
+ * @observable
+ * @api stable
+ */
+ol.layer.Group.prototype.setLayers = function(layers) {
+ this.set(ol.layer.GroupProperty.LAYERS, layers);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Group.prototype.getLayersArray = function(opt_array) {
+ var array = opt_array !== undefined ? opt_array : [];
+ this.getLayers().forEach(function(layer) {
+ layer.getLayersArray(array);
+ });
+ return array;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Group.prototype.getLayerStatesArray = function(opt_states) {
+ var states = opt_states !== undefined ? opt_states : [];
+
+ var pos = states.length;
+
+ this.getLayers().forEach(function(layer) {
+ layer.getLayerStatesArray(states);
+ });
+
+ var ownLayerState = this.getLayerState();
+ var i, ii, layerState;
+ for (i = pos, ii = states.length; i < ii; i++) {
+ layerState = states[i];
+ layerState.opacity *= ownLayerState.opacity;
+ layerState.visible = layerState.visible && ownLayerState.visible;
+ layerState.maxResolution = Math.min(
+ layerState.maxResolution, ownLayerState.maxResolution);
+ layerState.minResolution = Math.max(
+ layerState.minResolution, ownLayerState.minResolution);
+ if (ownLayerState.extent !== undefined) {
+ if (layerState.extent !== undefined) {
+ layerState.extent = ol.extent.getIntersection(
+ layerState.extent, ownLayerState.extent);
+ } else {
+ layerState.extent = ownLayerState.extent;
+ }
+ }
+ }
+
+ return states;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.layer.Group.prototype.getSourceState = function() {
+ return ol.source.State.READY;
+};
+
+goog.provide('ol.proj.EPSG3857');
+
+goog.require('goog.asserts');
+goog.require('ol.math');
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+
+
+/**
+ * @classdesc
+ * Projection object for web/spherical Mercator (EPSG:3857).
+ *
+ * @constructor
+ * @extends {ol.proj.Projection}
+ * @param {string} code Code.
+ * @private
+ */
+ol.proj.EPSG3857_ = function(code) {
+ ol.proj.Projection.call(this, {
+ code: code,
+ units: ol.proj.Units.METERS,
+ extent: ol.proj.EPSG3857.EXTENT,
+ global: true,
+ worldExtent: ol.proj.EPSG3857.WORLD_EXTENT
+ });
+};
+ol.inherits(ol.proj.EPSG3857_, ol.proj.Projection);
+
+
+/**
+ * @inheritDoc
+ */
+ol.proj.EPSG3857_.prototype.getPointResolution = function(resolution, point) {
+ return resolution / ol.math.cosh(point[1] / ol.proj.EPSG3857.RADIUS);
+};
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.proj.EPSG3857.RADIUS = 6378137;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.proj.EPSG3857.HALF_SIZE = Math.PI * ol.proj.EPSG3857.RADIUS;
+
+
+/**
+ * @const
+ * @type {ol.Extent}
+ */
+ol.proj.EPSG3857.EXTENT = [
+ -ol.proj.EPSG3857.HALF_SIZE, -ol.proj.EPSG3857.HALF_SIZE,
+ ol.proj.EPSG3857.HALF_SIZE, ol.proj.EPSG3857.HALF_SIZE
+];
+
+
+/**
+ * @const
+ * @type {ol.Extent}
+ */
+ol.proj.EPSG3857.WORLD_EXTENT = [-180, -85, 180, 85];
+
+
+/**
+ * Lists several projection codes with the same meaning as EPSG:3857.
+ *
+ * @type {Array.<string>}
+ */
+ol.proj.EPSG3857.CODES = [
+ 'EPSG:3857',
+ 'EPSG:102100',
+ 'EPSG:102113',
+ 'EPSG:900913',
+ 'urn:ogc:def:crs:EPSG:6.18:3:3857',
+ 'urn:ogc:def:crs:EPSG::3857',
+ 'http://www.opengis.net/gml/srs/epsg.xml#3857'
+];
+
+
+/**
+ * Projections equal to EPSG:3857.
+ *
+ * @const
+ * @type {Array.<ol.proj.Projection>}
+ */
+ol.proj.EPSG3857.PROJECTIONS = ol.proj.EPSG3857.CODES.map(function(code) {
+ return new ol.proj.EPSG3857_(code);
+});
+
+
+/**
+ * Transformation from EPSG:4326 to EPSG:3857.
+ *
+ * @param {Array.<number>} input Input array of coordinate values.
+ * @param {Array.<number>=} opt_output Output array of coordinate values.
+ * @param {number=} opt_dimension Dimension (default is `2`).
+ * @return {Array.<number>} Output array of coordinate values.
+ */
+ol.proj.EPSG3857.fromEPSG4326 = function(input, opt_output, opt_dimension) {
+ var length = input.length,
+ dimension = opt_dimension > 1 ? opt_dimension : 2,
+ output = opt_output;
+ if (output === undefined) {
+ if (dimension > 2) {
+ // preserve values beyond second dimension
+ output = input.slice();
+ } else {
+ output = new Array(length);
+ }
+ }
+ goog.asserts.assert(output.length % dimension === 0,
+ 'modulus of output.length with dimension should be 0');
+ for (var i = 0; i < length; i += dimension) {
+ output[i] = ol.proj.EPSG3857.RADIUS * Math.PI * input[i] / 180;
+ output[i + 1] = ol.proj.EPSG3857.RADIUS *
+ Math.log(Math.tan(Math.PI * (input[i + 1] + 90) / 360));
+ }
+ return output;
+};
+
+
+/**
+ * Transformation from EPSG:3857 to EPSG:4326.
+ *
+ * @param {Array.<number>} input Input array of coordinate values.
+ * @param {Array.<number>=} opt_output Output array of coordinate values.
+ * @param {number=} opt_dimension Dimension (default is `2`).
+ * @return {Array.<number>} Output array of coordinate values.
+ */
+ol.proj.EPSG3857.toEPSG4326 = function(input, opt_output, opt_dimension) {
+ var length = input.length,
+ dimension = opt_dimension > 1 ? opt_dimension : 2,
+ output = opt_output;
+ if (output === undefined) {
+ if (dimension > 2) {
+ // preserve values beyond second dimension
+ output = input.slice();
+ } else {
+ output = new Array(length);
+ }
+ }
+ goog.asserts.assert(output.length % dimension === 0,
+ 'modulus of output.length with dimension should be 0');
+ for (var i = 0; i < length; i += dimension) {
+ output[i] = 180 * input[i] / (ol.proj.EPSG3857.RADIUS * Math.PI);
+ output[i + 1] = 360 * Math.atan(
+ Math.exp(input[i + 1] / ol.proj.EPSG3857.RADIUS)) / Math.PI - 90;
+ }
+ return output;
+};
+
+goog.provide('ol.sphere.WGS84');
+
+goog.require('ol.Sphere');
+
+
+/**
+ * A sphere with radius equal to the semi-major axis of the WGS84 ellipsoid.
+ * @const
+ * @type {ol.Sphere}
+ */
+ol.sphere.WGS84 = new ol.Sphere(6378137);
+
+goog.provide('ol.proj.EPSG4326');
+
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+goog.require('ol.sphere.WGS84');
+
+
+/**
+ * @classdesc
+ * Projection object for WGS84 geographic coordinates (EPSG:4326).
+ *
+ * Note that OpenLayers does not strictly comply with the EPSG definition.
+ * The EPSG registry defines 4326 as a CRS for Latitude,Longitude (y,x).
+ * OpenLayers treats EPSG:4326 as a pseudo-projection, with x,y coordinates.
+ *
+ * @constructor
+ * @extends {ol.proj.Projection}
+ * @param {string} code Code.
+ * @param {string=} opt_axisOrientation Axis orientation.
+ * @private
+ */
+ol.proj.EPSG4326_ = function(code, opt_axisOrientation) {
+ ol.proj.Projection.call(this, {
+ code: code,
+ units: ol.proj.Units.DEGREES,
+ extent: ol.proj.EPSG4326.EXTENT,
+ axisOrientation: opt_axisOrientation,
+ global: true,
+ metersPerUnit: ol.proj.EPSG4326.METERS_PER_UNIT,
+ worldExtent: ol.proj.EPSG4326.EXTENT
+ });
+};
+ol.inherits(ol.proj.EPSG4326_, ol.proj.Projection);
+
+
+/**
+ * @inheritDoc
+ */
+ol.proj.EPSG4326_.prototype.getPointResolution = function(resolution, point) {
+ return resolution;
+};
+
+
+/**
+ * Extent of the EPSG:4326 projection which is the whole world.
+ *
+ * @const
+ * @type {ol.Extent}
+ */
+ol.proj.EPSG4326.EXTENT = [-180, -90, 180, 90];
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.proj.EPSG4326.METERS_PER_UNIT = Math.PI * ol.sphere.WGS84.radius / 180;
+
+
+/**
+ * Projections equal to EPSG:4326.
+ *
+ * @const
+ * @type {Array.<ol.proj.Projection>}
+ */
+ol.proj.EPSG4326.PROJECTIONS = [
+ new ol.proj.EPSG4326_('CRS:84'),
+ new ol.proj.EPSG4326_('EPSG:4326', 'neu'),
+ new ol.proj.EPSG4326_('urn:ogc:def:crs:EPSG::4326', 'neu'),
+ new ol.proj.EPSG4326_('urn:ogc:def:crs:EPSG:6.6:4326', 'neu'),
+ new ol.proj.EPSG4326_('urn:ogc:def:crs:OGC:1.3:CRS84'),
+ new ol.proj.EPSG4326_('urn:ogc:def:crs:OGC:2:84'),
+ new ol.proj.EPSG4326_('http://www.opengis.net/gml/srs/epsg.xml#4326', 'neu'),
+ new ol.proj.EPSG4326_('urn:x-ogc:def:crs:EPSG:4326', 'neu')
+];
+
+goog.provide('ol.proj.common');
+
+goog.require('ol.proj');
+goog.require('ol.proj.EPSG3857');
+goog.require('ol.proj.EPSG4326');
+
+
+/**
+ * FIXME empty description for jsdoc
+ * @api
+ */
+ol.proj.common.add = function() {
+ // Add transformations that don't alter coordinates to convert within set of
+ // projections with equal meaning.
+ ol.proj.addEquivalentProjections(ol.proj.EPSG3857.PROJECTIONS);
+ ol.proj.addEquivalentProjections(ol.proj.EPSG4326.PROJECTIONS);
+ // Add transformations to convert EPSG:4326 like coordinates to EPSG:3857 like
+ // coordinates and back.
+ ol.proj.addEquivalentTransforms(
+ ol.proj.EPSG4326.PROJECTIONS,
+ ol.proj.EPSG3857.PROJECTIONS,
+ ol.proj.EPSG3857.fromEPSG4326,
+ ol.proj.EPSG3857.toEPSG4326);
+};
+
+goog.provide('ol.layer.Image');
+
+goog.require('ol.layer.Layer');
+
+
+/**
+ * @classdesc
+ * Server-rendered images that are available for arbitrary extents and
+ * resolutions.
+ * Note that any property set in the options is set as a {@link ol.Object}
+ * property on the layer object; for example, setting `title: 'My Title'` in the
+ * options means that `title` is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.layer.Layer}
+ * @fires ol.render.Event
+ * @param {olx.layer.ImageOptions=} opt_options Layer options.
+ * @api stable
+ */
+ol.layer.Image = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+ ol.layer.Layer.call(this, /** @type {olx.layer.LayerOptions} */ (options));
+};
+ol.inherits(ol.layer.Image, ol.layer.Layer);
+
+
+/**
+ * Return the associated {@link ol.source.Image source} of the image layer.
+ * @function
+ * @return {ol.source.Image} Source.
+ * @api stable
+ */
+ol.layer.Image.prototype.getSource;
+
+goog.provide('ol.layer.Tile');
+
+goog.require('ol');
+goog.require('ol.layer.Layer');
+goog.require('ol.object');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.TileProperty = {
+ PRELOAD: 'preload',
+ USE_INTERIM_TILES_ON_ERROR: 'useInterimTilesOnError'
+};
+
+
+/**
+ * @classdesc
+ * For layer sources that provide pre-rendered, tiled images in grids that are
+ * organized by zoom levels for specific resolutions.
+ * Note that any property set in the options is set as a {@link ol.Object}
+ * property on the layer object; for example, setting `title: 'My Title'` in the
+ * options means that `title` is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.layer.Layer}
+ * @fires ol.render.Event
+ * @param {olx.layer.TileOptions=} opt_options Tile layer options.
+ * @api stable
+ */
+ol.layer.Tile = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ var baseOptions = ol.object.assign({}, options);
+
+ delete baseOptions.preload;
+ delete baseOptions.useInterimTilesOnError;
+ ol.layer.Layer.call(this, /** @type {olx.layer.LayerOptions} */ (baseOptions));
+
+ this.setPreload(options.preload !== undefined ? options.preload : 0);
+ this.setUseInterimTilesOnError(options.useInterimTilesOnError !== undefined ?
+ options.useInterimTilesOnError : true);
+};
+ol.inherits(ol.layer.Tile, ol.layer.Layer);
+
+
+/**
+ * Return the level as number to which we will preload tiles up to.
+ * @return {number} The level to preload tiles up to.
+ * @observable
+ * @api
+ */
+ol.layer.Tile.prototype.getPreload = function() {
+ return /** @type {number} */ (this.get(ol.layer.TileProperty.PRELOAD));
+};
+
+
+/**
+ * Return the associated {@link ol.source.Tile tilesource} of the layer.
+ * @function
+ * @return {ol.source.Tile} Source.
+ * @api stable
+ */
+ol.layer.Tile.prototype.getSource;
+
+
+/**
+ * Set the level as number to which we will preload tiles up to.
+ * @param {number} preload The level to preload tiles up to.
+ * @observable
+ * @api
+ */
+ol.layer.Tile.prototype.setPreload = function(preload) {
+ this.set(ol.layer.TileProperty.PRELOAD, preload);
+};
+
+
+/**
+ * Whether we use interim tiles on error.
+ * @return {boolean} Use interim tiles on error.
+ * @observable
+ * @api
+ */
+ol.layer.Tile.prototype.getUseInterimTilesOnError = function() {
+ return /** @type {boolean} */ (
+ this.get(ol.layer.TileProperty.USE_INTERIM_TILES_ON_ERROR));
+};
+
+
+/**
+ * Set whether we use interim tiles on error.
+ * @param {boolean} useInterimTilesOnError Use interim tiles on error.
+ * @observable
+ * @api
+ */
+ol.layer.Tile.prototype.setUseInterimTilesOnError = function(useInterimTilesOnError) {
+ this.set(
+ ol.layer.TileProperty.USE_INTERIM_TILES_ON_ERROR, useInterimTilesOnError);
+};
+
+goog.provide('ol.render.canvas');
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.canvas.defaultFont = '10px sans-serif';
+
+
+/**
+ * @const
+ * @type {ol.Color}
+ */
+ol.render.canvas.defaultFillStyle = [0, 0, 0, 1];
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.canvas.defaultLineCap = 'round';
+
+
+/**
+ * @const
+ * @type {Array.<number>}
+ */
+ol.render.canvas.defaultLineDash = [];
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.canvas.defaultLineJoin = 'round';
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.render.canvas.defaultMiterLimit = 10;
+
+
+/**
+ * @const
+ * @type {ol.Color}
+ */
+ol.render.canvas.defaultStrokeStyle = [0, 0, 0, 1];
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.canvas.defaultTextAlign = 'center';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.canvas.defaultTextBaseline = 'middle';
+
+
+/**
+ * @const
+ * @type {number}
+ */
+ol.render.canvas.defaultLineWidth = 1;
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} rotation Rotation.
+ * @param {number} offsetX X offset.
+ * @param {number} offsetY Y offset.
+ */
+ol.render.canvas.rotateAtOffset = function(context, rotation, offsetX, offsetY) {
+ if (rotation !== 0) {
+ context.translate(offsetX, offsetY);
+ context.rotate(rotation);
+ context.translate(-offsetX, -offsetY);
+ }
+};
+
+goog.provide('ol.style.Fill');
+
+goog.require('ol.color');
+
+
+/**
+ * @classdesc
+ * Set fill style for vector features.
+ *
+ * @constructor
+ * @param {olx.style.FillOptions=} opt_options Options.
+ * @api
+ */
+ol.style.Fill = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {ol.Color|ol.ColorLike}
+ */
+ this.color_ = options.color !== undefined ? options.color : null;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Get the fill color.
+ * @return {ol.Color|ol.ColorLike} Color.
+ * @api
+ */
+ol.style.Fill.prototype.getColor = function() {
+ return this.color_;
+};
+
+
+/**
+ * Set the color.
+ *
+ * @param {ol.Color|ol.ColorLike} color Color.
+ * @api
+ */
+ol.style.Fill.prototype.setColor = function(color) {
+ this.color_ = color;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * @return {string} The checksum.
+ */
+ol.style.Fill.prototype.getChecksum = function() {
+ if (this.checksum_ === undefined) {
+ if (
+ this.color_ instanceof CanvasPattern ||
+ this.color_ instanceof CanvasGradient
+ ) {
+ this.checksum_ = goog.getUid(this.color_).toString();
+ } else {
+ this.checksum_ = 'f' + (this.color_ ?
+ ol.color.asString(this.color_) : '-');
+ }
+ }
+
+ return this.checksum_;
+};
+
+// Copyright 2008 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Namespace with crypto related helper functions.
+ */
+
+goog.provide('goog.crypt');
+
+goog.require('goog.array');
+goog.require('goog.asserts');
+
+
+/**
+ * Turns a string into an array of bytes; a "byte" being a JS number in the
+ * range 0-255.
+ * @param {string} str String value to arrify.
+ * @return {!Array<number>} Array of numbers corresponding to the
+ * UCS character codes of each character in str.
+ */
+goog.crypt.stringToByteArray = function(str) {
+ var output = [], p = 0;
+ for (var i = 0; i < str.length; i++) {
+ var c = str.charCodeAt(i);
+ while (c > 0xff) {
+ output[p++] = c & 0xff;
+ c >>= 8;
+ }
+ output[p++] = c;
+ }
+ return output;
+};
+
+
+/**
+ * Turns an array of numbers into the string given by the concatenation of the
+ * characters to which the numbers correspond.
+ * @param {!Uint8Array|!Array<number>} bytes Array of numbers representing
+ * characters.
+ * @return {string} Stringification of the array.
+ */
+goog.crypt.byteArrayToString = function(bytes) {
+ var CHUNK_SIZE = 8192;
+
+ // Special-case the simple case for speed's sake.
+ if (bytes.length <= CHUNK_SIZE) {
+ return String.fromCharCode.apply(null, bytes);
+ }
+
+ // The remaining logic splits conversion by chunks since
+ // Function#apply() has a maximum parameter count.
+ // See discussion: http://goo.gl/LrWmZ9
+
+ var str = '';
+ for (var i = 0; i < bytes.length; i += CHUNK_SIZE) {
+ var chunk = goog.array.slice(bytes, i, i + CHUNK_SIZE);
+ str += String.fromCharCode.apply(null, chunk);
+ }
+ return str;
+};
+
+
+/**
+ * Turns an array of numbers into the hex string given by the concatenation of
+ * the hex values to which the numbers correspond.
+ * @param {Uint8Array|Array<number>} array Array of numbers representing
+ * characters.
+ * @return {string} Hex string.
+ */
+goog.crypt.byteArrayToHex = function(array) {
+ return goog.array
+ .map(
+ array,
+ function(numByte) {
+ var hexByte = numByte.toString(16);
+ return hexByte.length > 1 ? hexByte : '0' + hexByte;
+ })
+ .join('');
+};
+
+
+/**
+ * Converts a hex string into an integer array.
+ * @param {string} hexString Hex string of 16-bit integers (two characters
+ * per integer).
+ * @return {!Array<number>} Array of {0,255} integers for the given string.
+ */
+goog.crypt.hexToByteArray = function(hexString) {
+ goog.asserts.assert(
+ hexString.length % 2 == 0, 'Key string length must be multiple of 2');
+ var arr = [];
+ for (var i = 0; i < hexString.length; i += 2) {
+ arr.push(parseInt(hexString.substring(i, i + 2), 16));
+ }
+ return arr;
+};
+
+
+/**
+ * Converts a JS string to a UTF-8 "byte" array.
+ * @param {string} str 16-bit unicode string.
+ * @return {!Array<number>} UTF-8 byte array.
+ */
+goog.crypt.stringToUtf8ByteArray = function(str) {
+ // TODO(user): Use native implementations if/when available
+ var out = [], p = 0;
+ for (var i = 0; i < str.length; i++) {
+ var c = str.charCodeAt(i);
+ if (c < 128) {
+ out[p++] = c;
+ } else if (c < 2048) {
+ out[p++] = (c >> 6) | 192;
+ out[p++] = (c & 63) | 128;
+ } else if (
+ ((c & 0xFC00) == 0xD800) && (i + 1) < str.length &&
+ ((str.charCodeAt(i + 1) & 0xFC00) == 0xDC00)) {
+ // Surrogate Pair
+ c = 0x10000 + ((c & 0x03FF) << 10) + (str.charCodeAt(++i) & 0x03FF);
+ out[p++] = (c >> 18) | 240;
+ out[p++] = ((c >> 12) & 63) | 128;
+ out[p++] = ((c >> 6) & 63) | 128;
+ out[p++] = (c & 63) | 128;
+ } else {
+ out[p++] = (c >> 12) | 224;
+ out[p++] = ((c >> 6) & 63) | 128;
+ out[p++] = (c & 63) | 128;
+ }
+ }
+ return out;
+};
+
+
+/**
+ * Converts a UTF-8 byte array to JavaScript's 16-bit Unicode.
+ * @param {Uint8Array|Array<number>} bytes UTF-8 byte array.
+ * @return {string} 16-bit Unicode string.
+ */
+goog.crypt.utf8ByteArrayToString = function(bytes) {
+ // TODO(user): Use native implementations if/when available
+ var out = [], pos = 0, c = 0;
+ while (pos < bytes.length) {
+ var c1 = bytes[pos++];
+ if (c1 < 128) {
+ out[c++] = String.fromCharCode(c1);
+ } else if (c1 > 191 && c1 < 224) {
+ var c2 = bytes[pos++];
+ out[c++] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);
+ } else if (c1 > 239 && c1 < 365) {
+ // Surrogate Pair
+ var c2 = bytes[pos++];
+ var c3 = bytes[pos++];
+ var c4 = bytes[pos++];
+ var u = ((c1 & 7) << 18 | (c2 & 63) << 12 | (c3 & 63) << 6 | c4 & 63) -
+ 0x10000;
+ out[c++] = String.fromCharCode(0xD800 + (u >> 10));
+ out[c++] = String.fromCharCode(0xDC00 + (u & 1023));
+ } else {
+ var c2 = bytes[pos++];
+ var c3 = bytes[pos++];
+ out[c++] =
+ String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
+ }
+ }
+ return out.join('');
+};
+
+
+/**
+ * XOR two byte arrays.
+ * @param {!Uint8Array|!Int8Array|!Array<number>} bytes1 Byte array 1.
+ * @param {!Uint8Array|!Int8Array|!Array<number>} bytes2 Byte array 2.
+ * @return {!Array<number>} Resulting XOR of the two byte arrays.
+ */
+goog.crypt.xorByteArray = function(bytes1, bytes2) {
+ goog.asserts.assert(
+ bytes1.length == bytes2.length, 'XOR array lengths must match');
+
+ var result = [];
+ for (var i = 0; i < bytes1.length; i++) {
+ result.push(bytes1[i] ^ bytes2[i]);
+ }
+ return result;
+};
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Abstract cryptographic hash interface.
+ *
+ * See goog.crypt.Sha1 and goog.crypt.Md5 for sample implementations.
+ *
+ */
+
+goog.provide('goog.crypt.Hash');
+
+
+
+/**
+ * Create a cryptographic hash instance.
+ *
+ * @constructor
+ * @struct
+ */
+goog.crypt.Hash = function() {
+ /**
+ * The block size for the hasher.
+ * @type {number}
+ */
+ this.blockSize = -1;
+};
+
+
+/**
+ * Resets the internal accumulator.
+ */
+goog.crypt.Hash.prototype.reset = goog.abstractMethod;
+
+
+/**
+ * Adds a byte array (array with values in [0-255] range) or a string (might
+ * only contain 8-bit, i.e., Latin1 characters) to the internal accumulator.
+ *
+ * Many hash functions operate on blocks of data and implement optimizations
+ * when a full chunk of data is readily available. Hence it is often preferable
+ * to provide large chunks of data (a kilobyte or more) than to repeatedly
+ * call the update method with few tens of bytes. If this is not possible, or
+ * not feasible, it might be good to provide data in multiplies of hash block
+ * size (often 64 bytes). Please see the implementation and performance tests
+ * of your favourite hash.
+ *
+ * @param {Array<number>|Uint8Array|string} bytes Data used for the update.
+ * @param {number=} opt_length Number of bytes to use.
+ */
+goog.crypt.Hash.prototype.update = goog.abstractMethod;
+
+
+/**
+ * @return {!Array<number>} The finalized hash computed
+ * from the internal accumulator.
+ */
+goog.crypt.Hash.prototype.digest = goog.abstractMethod;
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview MD5 cryptographic hash.
+ * Implementation of http://tools.ietf.org/html/rfc1321 with common
+ * optimizations and tweaks (see http://en.wikipedia.org/wiki/MD5).
+ *
+ * Usage:
+ * var md5 = new goog.crypt.Md5();
+ * md5.update(bytes);
+ * var hash = md5.digest();
+ *
+ * Performance:
+ * Chrome 23 ~680 Mbit/s
+ * Chrome 13 (in a VM) ~250 Mbit/s
+ * Firefox 6.0 (in a VM) ~100 Mbit/s
+ * IE9 (in a VM) ~27 Mbit/s
+ * Firefox 3.6 ~15 Mbit/s
+ * IE8 (in a VM) ~13 Mbit/s
+ *
+ */
+
+goog.provide('goog.crypt.Md5');
+
+goog.require('goog.crypt.Hash');
+
+
+
+/**
+ * MD5 cryptographic hash constructor.
+ * @constructor
+ * @extends {goog.crypt.Hash}
+ * @final
+ * @struct
+ */
+goog.crypt.Md5 = function() {
+ goog.crypt.Md5.base(this, 'constructor');
+
+ this.blockSize = 512 / 8;
+
+ /**
+ * Holds the current values of accumulated A-D variables (MD buffer).
+ * @type {!Array<number>}
+ * @private
+ */
+ this.chain_ = new Array(4);
+
+ /**
+ * A buffer holding the data until the whole block can be processed.
+ * @type {!Array<number>}
+ * @private
+ */
+ this.block_ = new Array(this.blockSize);
+
+ /**
+ * The length of yet-unprocessed data as collected in the block.
+ * @type {number}
+ * @private
+ */
+ this.blockLength_ = 0;
+
+ /**
+ * The total length of the message so far.
+ * @type {number}
+ * @private
+ */
+ this.totalLength_ = 0;
+
+ this.reset();
+};
+goog.inherits(goog.crypt.Md5, goog.crypt.Hash);
+
+
+/**
+ * Integer rotation constants used by the abbreviated implementation.
+ * They are hardcoded in the unrolled implementation, so it is left
+ * here commented out.
+ * @type {Array<number>}
+ * @private
+ *
+goog.crypt.Md5.S_ = [
+ 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
+ 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
+ 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
+ 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21
+];
+ */
+
+/**
+ * Sine function constants used by the abbreviated implementation.
+ * They are hardcoded in the unrolled implementation, so it is left
+ * here commented out.
+ * @type {Array<number>}
+ * @private
+ *
+goog.crypt.Md5.T_ = [
+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+ 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
+];
+ */
+
+
+/** @override */
+goog.crypt.Md5.prototype.reset = function() {
+ this.chain_[0] = 0x67452301;
+ this.chain_[1] = 0xefcdab89;
+ this.chain_[2] = 0x98badcfe;
+ this.chain_[3] = 0x10325476;
+
+ this.blockLength_ = 0;
+ this.totalLength_ = 0;
+};
+
+
+/**
+ * Internal compress helper function. It takes a block of data (64 bytes)
+ * and updates the accumulator.
+ * @param {Array<number>|Uint8Array|string} buf The block to compress.
+ * @param {number=} opt_offset Offset of the block in the buffer.
+ * @private
+ */
+goog.crypt.Md5.prototype.compress_ = function(buf, opt_offset) {
+ if (!opt_offset) {
+ opt_offset = 0;
+ }
+
+ // We allocate the array every time, but it's cheap in practice.
+ var X = new Array(16);
+
+ // Get 16 little endian words. It is not worth unrolling this for Chrome 11.
+ if (goog.isString(buf)) {
+ for (var i = 0; i < 16; ++i) {
+ X[i] = (buf.charCodeAt(opt_offset++)) |
+ (buf.charCodeAt(opt_offset++) << 8) |
+ (buf.charCodeAt(opt_offset++) << 16) |
+ (buf.charCodeAt(opt_offset++) << 24);
+ }
+ } else {
+ for (var i = 0; i < 16; ++i) {
+ X[i] = (buf[opt_offset++]) | (buf[opt_offset++] << 8) |
+ (buf[opt_offset++] << 16) | (buf[opt_offset++] << 24);
+ }
+ }
+
+ var A = this.chain_[0];
+ var B = this.chain_[1];
+ var C = this.chain_[2];
+ var D = this.chain_[3];
+ var sum = 0;
+
+ /*
+ * This is an abbreviated implementation, it is left here commented out for
+ * reference purposes. See below for an unrolled version in use.
+ *
+ var f, n, tmp;
+ for (var i = 0; i < 64; ++i) {
+
+ if (i < 16) {
+ f = (D ^ (B & (C ^ D)));
+ n = i;
+ } else if (i < 32) {
+ f = (C ^ (D & (B ^ C)));
+ n = (5 * i + 1) % 16;
+ } else if (i < 48) {
+ f = (B ^ C ^ D);
+ n = (3 * i + 5) % 16;
+ } else {
+ f = (C ^ (B | (~D)));
+ n = (7 * i) % 16;
+ }
+
+ tmp = D;
+ D = C;
+ C = B;
+ sum = (A + f + goog.crypt.Md5.T_[i] + X[n]) & 0xffffffff;
+ B += ((sum << goog.crypt.Md5.S_[i]) & 0xffffffff) |
+ (sum >>> (32 - goog.crypt.Md5.S_[i]));
+ A = tmp;
+ }
+ */
+
+ /*
+ * This is an unrolled MD5 implementation, which gives ~30% speedup compared
+ * to the abbreviated implementation above, as measured on Chrome 11. It is
+ * important to keep 32-bit croppings to minimum and inline the integer
+ * rotation.
+ */
+ sum = (A + (D ^ (B & (C ^ D))) + X[0] + 0xd76aa478) & 0xffffffff;
+ A = B + (((sum << 7) & 0xffffffff) | (sum >>> 25));
+ sum = (D + (C ^ (A & (B ^ C))) + X[1] + 0xe8c7b756) & 0xffffffff;
+ D = A + (((sum << 12) & 0xffffffff) | (sum >>> 20));
+ sum = (C + (B ^ (D & (A ^ B))) + X[2] + 0x242070db) & 0xffffffff;
+ C = D + (((sum << 17) & 0xffffffff) | (sum >>> 15));
+ sum = (B + (A ^ (C & (D ^ A))) + X[3] + 0xc1bdceee) & 0xffffffff;
+ B = C + (((sum << 22) & 0xffffffff) | (sum >>> 10));
+ sum = (A + (D ^ (B & (C ^ D))) + X[4] + 0xf57c0faf) & 0xffffffff;
+ A = B + (((sum << 7) & 0xffffffff) | (sum >>> 25));
+ sum = (D + (C ^ (A & (B ^ C))) + X[5] + 0x4787c62a) & 0xffffffff;
+ D = A + (((sum << 12) & 0xffffffff) | (sum >>> 20));
+ sum = (C + (B ^ (D & (A ^ B))) + X[6] + 0xa8304613) & 0xffffffff;
+ C = D + (((sum << 17) & 0xffffffff) | (sum >>> 15));
+ sum = (B + (A ^ (C & (D ^ A))) + X[7] + 0xfd469501) & 0xffffffff;
+ B = C + (((sum << 22) & 0xffffffff) | (sum >>> 10));
+ sum = (A + (D ^ (B & (C ^ D))) + X[8] + 0x698098d8) & 0xffffffff;
+ A = B + (((sum << 7) & 0xffffffff) | (sum >>> 25));
+ sum = (D + (C ^ (A & (B ^ C))) + X[9] + 0x8b44f7af) & 0xffffffff;
+ D = A + (((sum << 12) & 0xffffffff) | (sum >>> 20));
+ sum = (C + (B ^ (D & (A ^ B))) + X[10] + 0xffff5bb1) & 0xffffffff;
+ C = D + (((sum << 17) & 0xffffffff) | (sum >>> 15));
+ sum = (B + (A ^ (C & (D ^ A))) + X[11] + 0x895cd7be) & 0xffffffff;
+ B = C + (((sum << 22) & 0xffffffff) | (sum >>> 10));
+ sum = (A + (D ^ (B & (C ^ D))) + X[12] + 0x6b901122) & 0xffffffff;
+ A = B + (((sum << 7) & 0xffffffff) | (sum >>> 25));
+ sum = (D + (C ^ (A & (B ^ C))) + X[13] + 0xfd987193) & 0xffffffff;
+ D = A + (((sum << 12) & 0xffffffff) | (sum >>> 20));
+ sum = (C + (B ^ (D & (A ^ B))) + X[14] + 0xa679438e) & 0xffffffff;
+ C = D + (((sum << 17) & 0xffffffff) | (sum >>> 15));
+ sum = (B + (A ^ (C & (D ^ A))) + X[15] + 0x49b40821) & 0xffffffff;
+ B = C + (((sum << 22) & 0xffffffff) | (sum >>> 10));
+ sum = (A + (C ^ (D & (B ^ C))) + X[1] + 0xf61e2562) & 0xffffffff;
+ A = B + (((sum << 5) & 0xffffffff) | (sum >>> 27));
+ sum = (D + (B ^ (C & (A ^ B))) + X[6] + 0xc040b340) & 0xffffffff;
+ D = A + (((sum << 9) & 0xffffffff) | (sum >>> 23));
+ sum = (C + (A ^ (B & (D ^ A))) + X[11] + 0x265e5a51) & 0xffffffff;
+ C = D + (((sum << 14) & 0xffffffff) | (sum >>> 18));
+ sum = (B + (D ^ (A & (C ^ D))) + X[0] + 0xe9b6c7aa) & 0xffffffff;
+ B = C + (((sum << 20) & 0xffffffff) | (sum >>> 12));
+ sum = (A + (C ^ (D & (B ^ C))) + X[5] + 0xd62f105d) & 0xffffffff;
+ A = B + (((sum << 5) & 0xffffffff) | (sum >>> 27));
+ sum = (D + (B ^ (C & (A ^ B))) + X[10] + 0x02441453) & 0xffffffff;
+ D = A + (((sum << 9) & 0xffffffff) | (sum >>> 23));
+ sum = (C + (A ^ (B & (D ^ A))) + X[15] + 0xd8a1e681) & 0xffffffff;
+ C = D + (((sum << 14) & 0xffffffff) | (sum >>> 18));
+ sum = (B + (D ^ (A & (C ^ D))) + X[4] + 0xe7d3fbc8) & 0xffffffff;
+ B = C + (((sum << 20) & 0xffffffff) | (sum >>> 12));
+ sum = (A + (C ^ (D & (B ^ C))) + X[9] + 0x21e1cde6) & 0xffffffff;
+ A = B + (((sum << 5) & 0xffffffff) | (sum >>> 27));
+ sum = (D + (B ^ (C & (A ^ B))) + X[14] + 0xc33707d6) & 0xffffffff;
+ D = A + (((sum << 9) & 0xffffffff) | (sum >>> 23));
+ sum = (C + (A ^ (B & (D ^ A))) + X[3] + 0xf4d50d87) & 0xffffffff;
+ C = D + (((sum << 14) & 0xffffffff) | (sum >>> 18));
+ sum = (B + (D ^ (A & (C ^ D))) + X[8] + 0x455a14ed) & 0xffffffff;
+ B = C + (((sum << 20) & 0xffffffff) | (sum >>> 12));
+ sum = (A + (C ^ (D & (B ^ C))) + X[13] + 0xa9e3e905) & 0xffffffff;
+ A = B + (((sum << 5) & 0xffffffff) | (sum >>> 27));
+ sum = (D + (B ^ (C & (A ^ B))) + X[2] + 0xfcefa3f8) & 0xffffffff;
+ D = A + (((sum << 9) & 0xffffffff) | (sum >>> 23));
+ sum = (C + (A ^ (B & (D ^ A))) + X[7] + 0x676f02d9) & 0xffffffff;
+ C = D + (((sum << 14) & 0xffffffff) | (sum >>> 18));
+ sum = (B + (D ^ (A & (C ^ D))) + X[12] + 0x8d2a4c8a) & 0xffffffff;
+ B = C + (((sum << 20) & 0xffffffff) | (sum >>> 12));
+ sum = (A + (B ^ C ^ D) + X[5] + 0xfffa3942) & 0xffffffff;
+ A = B + (((sum << 4) & 0xffffffff) | (sum >>> 28));
+ sum = (D + (A ^ B ^ C) + X[8] + 0x8771f681) & 0xffffffff;
+ D = A + (((sum << 11) & 0xffffffff) | (sum >>> 21));
+ sum = (C + (D ^ A ^ B) + X[11] + 0x6d9d6122) & 0xffffffff;
+ C = D + (((sum << 16) & 0xffffffff) | (sum >>> 16));
+ sum = (B + (C ^ D ^ A) + X[14] + 0xfde5380c) & 0xffffffff;
+ B = C + (((sum << 23) & 0xffffffff) | (sum >>> 9));
+ sum = (A + (B ^ C ^ D) + X[1] + 0xa4beea44) & 0xffffffff;
+ A = B + (((sum << 4) & 0xffffffff) | (sum >>> 28));
+ sum = (D + (A ^ B ^ C) + X[4] + 0x4bdecfa9) & 0xffffffff;
+ D = A + (((sum << 11) & 0xffffffff) | (sum >>> 21));
+ sum = (C + (D ^ A ^ B) + X[7] + 0xf6bb4b60) & 0xffffffff;
+ C = D + (((sum << 16) & 0xffffffff) | (sum >>> 16));
+ sum = (B + (C ^ D ^ A) + X[10] + 0xbebfbc70) & 0xffffffff;
+ B = C + (((sum << 23) & 0xffffffff) | (sum >>> 9));
+ sum = (A + (B ^ C ^ D) + X[13] + 0x289b7ec6) & 0xffffffff;
+ A = B + (((sum << 4) & 0xffffffff) | (sum >>> 28));
+ sum = (D + (A ^ B ^ C) + X[0] + 0xeaa127fa) & 0xffffffff;
+ D = A + (((sum << 11) & 0xffffffff) | (sum >>> 21));
+ sum = (C + (D ^ A ^ B) + X[3] + 0xd4ef3085) & 0xffffffff;
+ C = D + (((sum << 16) & 0xffffffff) | (sum >>> 16));
+ sum = (B + (C ^ D ^ A) + X[6] + 0x04881d05) & 0xffffffff;
+ B = C + (((sum << 23) & 0xffffffff) | (sum >>> 9));
+ sum = (A + (B ^ C ^ D) + X[9] + 0xd9d4d039) & 0xffffffff;
+ A = B + (((sum << 4) & 0xffffffff) | (sum >>> 28));
+ sum = (D + (A ^ B ^ C) + X[12] + 0xe6db99e5) & 0xffffffff;
+ D = A + (((sum << 11) & 0xffffffff) | (sum >>> 21));
+ sum = (C + (D ^ A ^ B) + X[15] + 0x1fa27cf8) & 0xffffffff;
+ C = D + (((sum << 16) & 0xffffffff) | (sum >>> 16));
+ sum = (B + (C ^ D ^ A) + X[2] + 0xc4ac5665) & 0xffffffff;
+ B = C + (((sum << 23) & 0xffffffff) | (sum >>> 9));
+ sum = (A + (C ^ (B | (~D))) + X[0] + 0xf4292244) & 0xffffffff;
+ A = B + (((sum << 6) & 0xffffffff) | (sum >>> 26));
+ sum = (D + (B ^ (A | (~C))) + X[7] + 0x432aff97) & 0xffffffff;
+ D = A + (((sum << 10) & 0xffffffff) | (sum >>> 22));
+ sum = (C + (A ^ (D | (~B))) + X[14] + 0xab9423a7) & 0xffffffff;
+ C = D + (((sum << 15) & 0xffffffff) | (sum >>> 17));
+ sum = (B + (D ^ (C | (~A))) + X[5] + 0xfc93a039) & 0xffffffff;
+ B = C + (((sum << 21) & 0xffffffff) | (sum >>> 11));
+ sum = (A + (C ^ (B | (~D))) + X[12] + 0x655b59c3) & 0xffffffff;
+ A = B + (((sum << 6) & 0xffffffff) | (sum >>> 26));
+ sum = (D + (B ^ (A | (~C))) + X[3] + 0x8f0ccc92) & 0xffffffff;
+ D = A + (((sum << 10) & 0xffffffff) | (sum >>> 22));
+ sum = (C + (A ^ (D | (~B))) + X[10] + 0xffeff47d) & 0xffffffff;
+ C = D + (((sum << 15) & 0xffffffff) | (sum >>> 17));
+ sum = (B + (D ^ (C | (~A))) + X[1] + 0x85845dd1) & 0xffffffff;
+ B = C + (((sum << 21) & 0xffffffff) | (sum >>> 11));
+ sum = (A + (C ^ (B | (~D))) + X[8] + 0x6fa87e4f) & 0xffffffff;
+ A = B + (((sum << 6) & 0xffffffff) | (sum >>> 26));
+ sum = (D + (B ^ (A | (~C))) + X[15] + 0xfe2ce6e0) & 0xffffffff;
+ D = A + (((sum << 10) & 0xffffffff) | (sum >>> 22));
+ sum = (C + (A ^ (D | (~B))) + X[6] + 0xa3014314) & 0xffffffff;
+ C = D + (((sum << 15) & 0xffffffff) | (sum >>> 17));
+ sum = (B + (D ^ (C | (~A))) + X[13] + 0x4e0811a1) & 0xffffffff;
+ B = C + (((sum << 21) & 0xffffffff) | (sum >>> 11));
+ sum = (A + (C ^ (B | (~D))) + X[4] + 0xf7537e82) & 0xffffffff;
+ A = B + (((sum << 6) & 0xffffffff) | (sum >>> 26));
+ sum = (D + (B ^ (A | (~C))) + X[11] + 0xbd3af235) & 0xffffffff;
+ D = A + (((sum << 10) & 0xffffffff) | (sum >>> 22));
+ sum = (C + (A ^ (D | (~B))) + X[2] + 0x2ad7d2bb) & 0xffffffff;
+ C = D + (((sum << 15) & 0xffffffff) | (sum >>> 17));
+ sum = (B + (D ^ (C | (~A))) + X[9] + 0xeb86d391) & 0xffffffff;
+ B = C + (((sum << 21) & 0xffffffff) | (sum >>> 11));
+
+ this.chain_[0] = (this.chain_[0] + A) & 0xffffffff;
+ this.chain_[1] = (this.chain_[1] + B) & 0xffffffff;
+ this.chain_[2] = (this.chain_[2] + C) & 0xffffffff;
+ this.chain_[3] = (this.chain_[3] + D) & 0xffffffff;
+};
+
+
+/** @override */
+goog.crypt.Md5.prototype.update = function(bytes, opt_length) {
+ if (!goog.isDef(opt_length)) {
+ opt_length = bytes.length;
+ }
+ var lengthMinusBlock = opt_length - this.blockSize;
+
+ // Copy some object properties to local variables in order to save on access
+ // time from inside the loop (~10% speedup was observed on Chrome 11).
+ var block = this.block_;
+ var blockLength = this.blockLength_;
+ var i = 0;
+
+ // The outer while loop should execute at most twice.
+ while (i < opt_length) {
+ // When we have no data in the block to top up, we can directly process the
+ // input buffer (assuming it contains sufficient data). This gives ~30%
+ // speedup on Chrome 14 and ~70% speedup on Firefox 6.0, but requires that
+ // the data is provided in large chunks (or in multiples of 64 bytes).
+ if (blockLength == 0) {
+ while (i <= lengthMinusBlock) {
+ this.compress_(bytes, i);
+ i += this.blockSize;
+ }
+ }
+
+ if (goog.isString(bytes)) {
+ while (i < opt_length) {
+ block[blockLength++] = bytes.charCodeAt(i++);
+ if (blockLength == this.blockSize) {
+ this.compress_(block);
+ blockLength = 0;
+ // Jump to the outer loop so we use the full-block optimization.
+ break;
+ }
+ }
+ } else {
+ while (i < opt_length) {
+ block[blockLength++] = bytes[i++];
+ if (blockLength == this.blockSize) {
+ this.compress_(block);
+ blockLength = 0;
+ // Jump to the outer loop so we use the full-block optimization.
+ break;
+ }
+ }
+ }
+ }
+
+ this.blockLength_ = blockLength;
+ this.totalLength_ += opt_length;
+};
+
+
+/** @override */
+goog.crypt.Md5.prototype.digest = function() {
+ // This must accommodate at least 1 padding byte (0x80), 8 bytes of
+ // total bitlength, and must end at a 64-byte boundary.
+ var pad = new Array(
+ (this.blockLength_ < 56 ? this.blockSize : this.blockSize * 2) -
+ this.blockLength_);
+
+ // Add padding: 0x80 0x00*
+ pad[0] = 0x80;
+ for (var i = 1; i < pad.length - 8; ++i) {
+ pad[i] = 0;
+ }
+ // Add the total number of bits, little endian 64-bit integer.
+ var totalBits = this.totalLength_ * 8;
+ for (var i = pad.length - 8; i < pad.length; ++i) {
+ pad[i] = totalBits & 0xff;
+ totalBits /= 0x100; // Don't use bit-shifting here!
+ }
+ this.update(pad);
+
+ var digest = new Array(16);
+ var n = 0;
+ for (var i = 0; i < 4; ++i) {
+ for (var j = 0; j < 32; j += 8) {
+ digest[n++] = (this.chain_[i] >>> j) & 0xff;
+ }
+ }
+ return digest;
+};
+
+goog.provide('ol.style.Stroke');
+
+goog.require('goog.crypt');
+goog.require('goog.crypt.Md5');
+goog.require('ol.color');
+
+
+/**
+ * @classdesc
+ * Set stroke style for vector features.
+ * Note that the defaults given are the Canvas defaults, which will be used if
+ * option is not defined. The `get` functions return whatever was entered in
+ * the options; they will not return the default.
+ *
+ * @constructor
+ * @param {olx.style.StrokeOptions=} opt_options Options.
+ * @api
+ */
+ol.style.Stroke = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {ol.Color|string}
+ */
+ this.color_ = options.color !== undefined ? options.color : null;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.lineCap_ = options.lineCap;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.lineDash_ = options.lineDash !== undefined ? options.lineDash : null;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.lineJoin_ = options.lineJoin;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.miterLimit_ = options.miterLimit;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.width_ = options.width;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Get the stroke color.
+ * @return {ol.Color|string} Color.
+ * @api
+ */
+ol.style.Stroke.prototype.getColor = function() {
+ return this.color_;
+};
+
+
+/**
+ * Get the line cap type for the stroke.
+ * @return {string|undefined} Line cap.
+ * @api
+ */
+ol.style.Stroke.prototype.getLineCap = function() {
+ return this.lineCap_;
+};
+
+
+/**
+ * Get the line dash style for the stroke.
+ * @return {Array.<number>} Line dash.
+ * @api
+ */
+ol.style.Stroke.prototype.getLineDash = function() {
+ return this.lineDash_;
+};
+
+
+/**
+ * Get the line join type for the stroke.
+ * @return {string|undefined} Line join.
+ * @api
+ */
+ol.style.Stroke.prototype.getLineJoin = function() {
+ return this.lineJoin_;
+};
+
+
+/**
+ * Get the miter limit for the stroke.
+ * @return {number|undefined} Miter limit.
+ * @api
+ */
+ol.style.Stroke.prototype.getMiterLimit = function() {
+ return this.miterLimit_;
+};
+
+
+/**
+ * Get the stroke width.
+ * @return {number|undefined} Width.
+ * @api
+ */
+ol.style.Stroke.prototype.getWidth = function() {
+ return this.width_;
+};
+
+
+/**
+ * Set the color.
+ *
+ * @param {ol.Color|string} color Color.
+ * @api
+ */
+ol.style.Stroke.prototype.setColor = function(color) {
+ this.color_ = color;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Set the line cap.
+ *
+ * @param {string|undefined} lineCap Line cap.
+ * @api
+ */
+ol.style.Stroke.prototype.setLineCap = function(lineCap) {
+ this.lineCap_ = lineCap;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Set the line dash.
+ *
+ * Please note that Internet Explorer 10 and lower [do not support][mdn] the
+ * `setLineDash` method on the `CanvasRenderingContext2D` and therefore this
+ * property will have no visual effect in these browsers.
+ *
+ * [mdn]: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash#Browser_compatibility
+ *
+ * @param {Array.<number>} lineDash Line dash.
+ * @api
+ */
+ol.style.Stroke.prototype.setLineDash = function(lineDash) {
+ this.lineDash_ = lineDash;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Set the line join.
+ *
+ * @param {string|undefined} lineJoin Line join.
+ * @api
+ */
+ol.style.Stroke.prototype.setLineJoin = function(lineJoin) {
+ this.lineJoin_ = lineJoin;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Set the miter limit.
+ *
+ * @param {number|undefined} miterLimit Miter limit.
+ * @api
+ */
+ol.style.Stroke.prototype.setMiterLimit = function(miterLimit) {
+ this.miterLimit_ = miterLimit;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * Set the width.
+ *
+ * @param {number|undefined} width Width.
+ * @api
+ */
+ol.style.Stroke.prototype.setWidth = function(width) {
+ this.width_ = width;
+ this.checksum_ = undefined;
+};
+
+
+/**
+ * @return {string} The checksum.
+ */
+ol.style.Stroke.prototype.getChecksum = function() {
+ if (this.checksum_ === undefined) {
+ var raw = 's' +
+ (this.color_ ?
+ ol.color.asString(this.color_) : '-') + ',' +
+ (this.lineCap_ !== undefined ?
+ this.lineCap_.toString() : '-') + ',' +
+ (this.lineDash_ ?
+ this.lineDash_.toString() : '-') + ',' +
+ (this.lineJoin_ !== undefined ?
+ this.lineJoin_ : '-') + ',' +
+ (this.miterLimit_ !== undefined ?
+ this.miterLimit_.toString() : '-') + ',' +
+ (this.width_ !== undefined ?
+ this.width_.toString() : '-');
+
+ var md5 = new goog.crypt.Md5();
+ md5.update(raw);
+ this.checksum_ = goog.crypt.byteArrayToString(md5.digest());
+ }
+
+ return this.checksum_;
+};
+
+goog.provide('ol.style.Circle');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.color');
+goog.require('ol.colorlike');
+goog.require('ol.dom');
+goog.require('ol.has');
+goog.require('ol.render.canvas');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Image');
+goog.require('ol.style.ImageState');
+goog.require('ol.style.Stroke');
+
+
+/**
+ * @classdesc
+ * Set circle style for vector features.
+ *
+ * @constructor
+ * @param {olx.style.CircleOptions=} opt_options Options.
+ * @extends {ol.style.Image}
+ * @api
+ */
+ol.style.Circle = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.checksums_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.hitDetectionCanvas_ = null;
+
+ /**
+ * @private
+ * @type {ol.style.Fill}
+ */
+ this.fill_ = options.fill !== undefined ? options.fill : null;
+
+ /**
+ * @private
+ * @type {ol.style.Stroke}
+ */
+ this.stroke_ = options.stroke !== undefined ? options.stroke : null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.radius_ = options.radius;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.origin_ = [0, 0];
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.anchor_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.size_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.imageSize_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.hitDetectionImageSize_ = null;
+
+ this.render_(options.atlasManager);
+
+ /**
+ * @type {boolean}
+ */
+ var snapToPixel = options.snapToPixel !== undefined ?
+ options.snapToPixel : true;
+
+ ol.style.Image.call(this, {
+ opacity: 1,
+ rotateWithView: false,
+ rotation: 0,
+ scale: 1,
+ snapToPixel: snapToPixel
+ });
+
+};
+ol.inherits(ol.style.Circle, ol.style.Image);
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getAnchor = function() {
+ return this.anchor_;
+};
+
+
+/**
+ * Get the fill style for the circle.
+ * @return {ol.style.Fill} Fill style.
+ * @api
+ */
+ol.style.Circle.prototype.getFill = function() {
+ return this.fill_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getHitDetectionImage = function(pixelRatio) {
+ return this.hitDetectionCanvas_;
+};
+
+
+/**
+ * Get the image used to render the circle.
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {HTMLCanvasElement} Canvas element.
+ * @api
+ */
+ol.style.Circle.prototype.getImage = function(pixelRatio) {
+ return this.canvas_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getImageState = function() {
+ return ol.style.ImageState.LOADED;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getImageSize = function() {
+ return this.imageSize_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getHitDetectionImageSize = function() {
+ return this.hitDetectionImageSize_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getOrigin = function() {
+ return this.origin_;
+};
+
+
+/**
+ * Get the circle radius.
+ * @return {number} Radius.
+ * @api
+ */
+ol.style.Circle.prototype.getRadius = function() {
+ return this.radius_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.getSize = function() {
+ return this.size_;
+};
+
+
+/**
+ * Get the stroke style for the circle.
+ * @return {ol.style.Stroke} Stroke style.
+ * @api
+ */
+ol.style.Circle.prototype.getStroke = function() {
+ return this.stroke_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.listenImageChange = ol.nullFunction;
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.load = ol.nullFunction;
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.Circle.prototype.unlistenImageChange = ol.nullFunction;
+
+
+/**
+ * @private
+ * @param {ol.style.AtlasManager|undefined} atlasManager An atlas manager.
+ */
+ol.style.Circle.prototype.render_ = function(atlasManager) {
+ var imageSize;
+ var lineDash = null;
+ var strokeStyle;
+ var strokeWidth = 0;
+
+ if (this.stroke_) {
+ strokeStyle = ol.color.asString(this.stroke_.getColor());
+ strokeWidth = this.stroke_.getWidth();
+ if (strokeWidth === undefined) {
+ strokeWidth = ol.render.canvas.defaultLineWidth;
+ }
+ lineDash = this.stroke_.getLineDash();
+ if (!ol.has.CANVAS_LINE_DASH) {
+ lineDash = null;
+ }
+ }
+
+
+ var size = 2 * (this.radius_ + strokeWidth) + 1;
+
+ /** @type {ol.CircleRenderOptions} */
+ var renderOptions = {
+ strokeStyle: strokeStyle,
+ strokeWidth: strokeWidth,
+ size: size,
+ lineDash: lineDash
+ };
+
+ if (atlasManager === undefined) {
+ // no atlas manager is used, create a new canvas
+ var context = ol.dom.createCanvasContext2D(size, size);
+ this.canvas_ = context.canvas;
+
+ // canvas.width and height are rounded to the closest integer
+ size = this.canvas_.width;
+ imageSize = size;
+
+ // draw the circle on the canvas
+ this.draw_(renderOptions, context, 0, 0);
+
+ this.createHitDetectionCanvas_(renderOptions);
+ } else {
+ // an atlas manager is used, add the symbol to an atlas
+ size = Math.round(size);
+
+ var hasCustomHitDetectionImage = !this.fill_;
+ var renderHitDetectionCallback;
+ if (hasCustomHitDetectionImage) {
+ // render the hit-detection image into a separate atlas image
+ renderHitDetectionCallback =
+ this.drawHitDetectionCanvas_.bind(this, renderOptions);
+ }
+
+ var id = this.getChecksum();
+ var info = atlasManager.add(
+ id, size, size, this.draw_.bind(this, renderOptions),
+ renderHitDetectionCallback);
+ goog.asserts.assert(info, 'circle radius is too large');
+
+ this.canvas_ = info.image;
+ this.origin_ = [info.offsetX, info.offsetY];
+ imageSize = info.image.width;
+
+ if (hasCustomHitDetectionImage) {
+ this.hitDetectionCanvas_ = info.hitImage;
+ this.hitDetectionImageSize_ =
+ [info.hitImage.width, info.hitImage.height];
+ } else {
+ this.hitDetectionCanvas_ = this.canvas_;
+ this.hitDetectionImageSize_ = [imageSize, imageSize];
+ }
+ }
+
+ this.anchor_ = [size / 2, size / 2];
+ this.size_ = [size, size];
+ this.imageSize_ = [imageSize, imageSize];
+};
+
+
+/**
+ * @private
+ * @param {ol.CircleRenderOptions} renderOptions Render options.
+ * @param {CanvasRenderingContext2D} context The rendering context.
+ * @param {number} x The origin for the symbol (x).
+ * @param {number} y The origin for the symbol (y).
+ */
+ol.style.Circle.prototype.draw_ = function(renderOptions, context, x, y) {
+ // reset transform
+ context.setTransform(1, 0, 0, 1, 0, 0);
+
+ // then move to (x, y)
+ context.translate(x, y);
+
+ context.beginPath();
+ context.arc(
+ renderOptions.size / 2, renderOptions.size / 2,
+ this.radius_, 0, 2 * Math.PI, true);
+
+ if (this.fill_) {
+ context.fillStyle = ol.colorlike.asColorLike(this.fill_.getColor());
+ context.fill();
+ }
+ if (this.stroke_) {
+ context.strokeStyle = renderOptions.strokeStyle;
+ context.lineWidth = renderOptions.strokeWidth;
+ if (renderOptions.lineDash) {
+ context.setLineDash(renderOptions.lineDash);
+ }
+ context.stroke();
+ }
+ context.closePath();
+};
+
+
+/**
+ * @private
+ * @param {ol.CircleRenderOptions} renderOptions Render options.
+ */
+ol.style.Circle.prototype.createHitDetectionCanvas_ = function(renderOptions) {
+ this.hitDetectionImageSize_ = [renderOptions.size, renderOptions.size];
+ if (this.fill_) {
+ this.hitDetectionCanvas_ = this.canvas_;
+ return;
+ }
+
+ // if no fill style is set, create an extra hit-detection image with a
+ // default fill style
+ var context = ol.dom.createCanvasContext2D(renderOptions.size, renderOptions.size);
+ this.hitDetectionCanvas_ = context.canvas;
+
+ this.drawHitDetectionCanvas_(renderOptions, context, 0, 0);
+};
+
+
+/**
+ * @private
+ * @param {ol.CircleRenderOptions} renderOptions Render options.
+ * @param {CanvasRenderingContext2D} context The context.
+ * @param {number} x The origin for the symbol (x).
+ * @param {number} y The origin for the symbol (y).
+ */
+ol.style.Circle.prototype.drawHitDetectionCanvas_ = function(renderOptions, context, x, y) {
+ // reset transform
+ context.setTransform(1, 0, 0, 1, 0, 0);
+
+ // then move to (x, y)
+ context.translate(x, y);
+
+ context.beginPath();
+ context.arc(
+ renderOptions.size / 2, renderOptions.size / 2,
+ this.radius_, 0, 2 * Math.PI, true);
+
+ context.fillStyle = ol.color.asString(ol.render.canvas.defaultFillStyle);
+ context.fill();
+ if (this.stroke_) {
+ context.strokeStyle = renderOptions.strokeStyle;
+ context.lineWidth = renderOptions.strokeWidth;
+ if (renderOptions.lineDash) {
+ context.setLineDash(renderOptions.lineDash);
+ }
+ context.stroke();
+ }
+ context.closePath();
+};
+
+
+/**
+ * @return {string} The checksum.
+ */
+ol.style.Circle.prototype.getChecksum = function() {
+ var strokeChecksum = this.stroke_ ?
+ this.stroke_.getChecksum() : '-';
+ var fillChecksum = this.fill_ ?
+ this.fill_.getChecksum() : '-';
+
+ var recalculate = !this.checksums_ ||
+ (strokeChecksum != this.checksums_[1] ||
+ fillChecksum != this.checksums_[2] ||
+ this.radius_ != this.checksums_[3]);
+
+ if (recalculate) {
+ var checksum = 'c' + strokeChecksum + fillChecksum +
+ (this.radius_ !== undefined ? this.radius_.toString() : '-');
+ this.checksums_ = [checksum, strokeChecksum, fillChecksum, this.radius_];
+ }
+
+ return this.checksums_[0];
+};
+
+goog.provide('ol.style.Style');
+goog.provide('ol.style.defaultGeometryFunction');
+
+goog.require('goog.asserts');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.style.Circle');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Image');
+goog.require('ol.style.Stroke');
+
+
+/**
+ * @classdesc
+ * Container for vector feature rendering styles. Any changes made to the style
+ * or its children through `set*()` methods will not take effect until the
+ * feature or layer that uses the style is re-rendered.
+ *
+ * @constructor
+ * @struct
+ * @param {olx.style.StyleOptions=} opt_options Style options.
+ * @api
+ */
+ol.style.Style = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {string|ol.geom.Geometry|ol.StyleGeometryFunction}
+ */
+ this.geometry_ = null;
+
+ /**
+ * @private
+ * @type {!ol.StyleGeometryFunction}
+ */
+ this.geometryFunction_ = ol.style.defaultGeometryFunction;
+
+ if (options.geometry !== undefined) {
+ this.setGeometry(options.geometry);
+ }
+
+ /**
+ * @private
+ * @type {ol.style.Fill}
+ */
+ this.fill_ = options.fill !== undefined ? options.fill : null;
+
+ /**
+ * @private
+ * @type {ol.style.Image}
+ */
+ this.image_ = options.image !== undefined ? options.image : null;
+
+ /**
+ * @private
+ * @type {ol.style.Stroke}
+ */
+ this.stroke_ = options.stroke !== undefined ? options.stroke : null;
+
+ /**
+ * @private
+ * @type {ol.style.Text}
+ */
+ this.text_ = options.text !== undefined ? options.text : null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.zIndex_ = options.zIndex;
+
+};
+
+
+/**
+ * Get the geometry to be rendered.
+ * @return {string|ol.geom.Geometry|ol.StyleGeometryFunction}
+ * Feature property or geometry or function that returns the geometry that will
+ * be rendered with this style.
+ * @api
+ */
+ol.style.Style.prototype.getGeometry = function() {
+ return this.geometry_;
+};
+
+
+/**
+ * Get the function used to generate a geometry for rendering.
+ * @return {!ol.StyleGeometryFunction} Function that is called with a feature
+ * and returns the geometry to render instead of the feature's geometry.
+ * @api
+ */
+ol.style.Style.prototype.getGeometryFunction = function() {
+ return this.geometryFunction_;
+};
+
+
+/**
+ * Get the fill style.
+ * @return {ol.style.Fill} Fill style.
+ * @api
+ */
+ol.style.Style.prototype.getFill = function() {
+ return this.fill_;
+};
+
+
+/**
+ * Get the image style.
+ * @return {ol.style.Image} Image style.
+ * @api
+ */
+ol.style.Style.prototype.getImage = function() {
+ return this.image_;
+};
+
+
+/**
+ * Get the stroke style.
+ * @return {ol.style.Stroke} Stroke style.
+ * @api
+ */
+ol.style.Style.prototype.getStroke = function() {
+ return this.stroke_;
+};
+
+
+/**
+ * Get the text style.
+ * @return {ol.style.Text} Text style.
+ * @api
+ */
+ol.style.Style.prototype.getText = function() {
+ return this.text_;
+};
+
+
+/**
+ * Get the z-index for the style.
+ * @return {number|undefined} ZIndex.
+ * @api
+ */
+ol.style.Style.prototype.getZIndex = function() {
+ return this.zIndex_;
+};
+
+
+/**
+ * Set a geometry that is rendered instead of the feature's geometry.
+ *
+ * @param {string|ol.geom.Geometry|ol.StyleGeometryFunction} geometry
+ * Feature property or geometry or function returning a geometry to render
+ * for this style.
+ * @api
+ */
+ol.style.Style.prototype.setGeometry = function(geometry) {
+ if (typeof geometry === 'function') {
+ this.geometryFunction_ = geometry;
+ } else if (typeof geometry === 'string') {
+ this.geometryFunction_ = function(feature) {
+ var result = feature.get(geometry);
+ if (result) {
+ goog.asserts.assertInstanceof(result, ol.geom.Geometry,
+ 'feature geometry must be an ol.geom.Geometry instance');
+ }
+ return result;
+ };
+ } else if (!geometry) {
+ this.geometryFunction_ = ol.style.defaultGeometryFunction;
+ } else if (geometry !== undefined) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Geometry,
+ 'geometry must be an ol.geom.Geometry instance');
+ this.geometryFunction_ = function() {
+ return geometry;
+ };
+ }
+ this.geometry_ = geometry;
+};
+
+
+/**
+ * Set the z-index.
+ *
+ * @param {number|undefined} zIndex ZIndex.
+ * @api
+ */
+ol.style.Style.prototype.setZIndex = function(zIndex) {
+ this.zIndex_ = zIndex;
+};
+
+
+/**
+ * Convert the provided object into a style function. Functions passed through
+ * unchanged. Arrays of ol.style.Style or single style objects wrapped in a
+ * new style function.
+ * @param {ol.StyleFunction|Array.<ol.style.Style>|ol.style.Style} obj
+ * A style function, a single style, or an array of styles.
+ * @return {ol.StyleFunction} A style function.
+ */
+ol.style.createStyleFunction = function(obj) {
+ var styleFunction;
+
+ if (typeof obj === 'function') {
+ styleFunction = obj;
+ } else {
+ /**
+ * @type {Array.<ol.style.Style>}
+ */
+ var styles;
+ if (Array.isArray(obj)) {
+ styles = obj;
+ } else {
+ goog.asserts.assertInstanceof(obj, ol.style.Style,
+ 'obj geometry must be an ol.style.Style instance');
+ styles = [obj];
+ }
+ styleFunction = function() {
+ return styles;
+ };
+ }
+ return styleFunction;
+};
+
+
+/**
+ * @type {Array.<ol.style.Style>}
+ * @private
+ */
+ol.style.defaultStyle_ = null;
+
+
+/**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @return {Array.<ol.style.Style>} Style.
+ */
+ol.style.defaultStyleFunction = function(feature, resolution) {
+ // We don't use an immediately-invoked function
+ // and a closure so we don't get an error at script evaluation time in
+ // browsers that do not support Canvas. (ol.style.Circle does
+ // canvas.getContext('2d') at construction time, which will cause an.error
+ // in such browsers.)
+ if (!ol.style.defaultStyle_) {
+ var fill = new ol.style.Fill({
+ color: 'rgba(255,255,255,0.4)'
+ });
+ var stroke = new ol.style.Stroke({
+ color: '#3399CC',
+ width: 1.25
+ });
+ ol.style.defaultStyle_ = [
+ new ol.style.Style({
+ image: new ol.style.Circle({
+ fill: fill,
+ stroke: stroke,
+ radius: 5
+ }),
+ fill: fill,
+ stroke: stroke
+ })
+ ];
+ }
+ return ol.style.defaultStyle_;
+};
+
+
+/**
+ * Default styles for editing features.
+ * @return {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} Styles
+ */
+ol.style.createDefaultEditingStyles = function() {
+ /** @type {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} */
+ var styles = {};
+ var white = [255, 255, 255, 1];
+ var blue = [0, 153, 255, 1];
+ var width = 3;
+ styles[ol.geom.GeometryType.POLYGON] = [
+ new ol.style.Style({
+ fill: new ol.style.Fill({
+ color: [255, 255, 255, 0.5]
+ })
+ })
+ ];
+ styles[ol.geom.GeometryType.MULTI_POLYGON] =
+ styles[ol.geom.GeometryType.POLYGON];
+
+ styles[ol.geom.GeometryType.LINE_STRING] = [
+ new ol.style.Style({
+ stroke: new ol.style.Stroke({
+ color: white,
+ width: width + 2
+ })
+ }),
+ new ol.style.Style({
+ stroke: new ol.style.Stroke({
+ color: blue,
+ width: width
+ })
+ })
+ ];
+ styles[ol.geom.GeometryType.MULTI_LINE_STRING] =
+ styles[ol.geom.GeometryType.LINE_STRING];
+
+ styles[ol.geom.GeometryType.CIRCLE] =
+ styles[ol.geom.GeometryType.POLYGON].concat(
+ styles[ol.geom.GeometryType.LINE_STRING]
+ );
+
+
+ styles[ol.geom.GeometryType.POINT] = [
+ new ol.style.Style({
+ image: new ol.style.Circle({
+ radius: width * 2,
+ fill: new ol.style.Fill({
+ color: blue
+ }),
+ stroke: new ol.style.Stroke({
+ color: white,
+ width: width / 2
+ })
+ }),
+ zIndex: Infinity
+ })
+ ];
+ styles[ol.geom.GeometryType.MULTI_POINT] =
+ styles[ol.geom.GeometryType.POINT];
+
+ styles[ol.geom.GeometryType.GEOMETRY_COLLECTION] =
+ styles[ol.geom.GeometryType.POLYGON].concat(
+ styles[ol.geom.GeometryType.LINE_STRING],
+ styles[ol.geom.GeometryType.POINT]
+ );
+
+ return styles;
+};
+
+
+/**
+ * Function that is called with a feature and returns its default geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature to get the geometry
+ * for.
+ * @return {ol.geom.Geometry|ol.render.Feature|undefined} Geometry to render.
+ */
+ol.style.defaultGeometryFunction = function(feature) {
+ goog.asserts.assert(feature, 'feature must not be null');
+ return feature.getGeometry();
+};
+
+goog.provide('ol.layer.Vector');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.layer.Layer');
+goog.require('ol.object');
+goog.require('ol.style.Style');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.VectorProperty = {
+ RENDER_ORDER: 'renderOrder'
+};
+
+
+/**
+ * @classdesc
+ * Vector data that is rendered client-side.
+ * Note that any property set in the options is set as a {@link ol.Object}
+ * property on the layer object; for example, setting `title: 'My Title'` in the
+ * options means that `title` is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.layer.Layer}
+ * @fires ol.render.Event
+ * @param {olx.layer.VectorOptions=} opt_options Options.
+ * @api stable
+ */
+ol.layer.Vector = function(opt_options) {
+
+ var options = opt_options ?
+ opt_options : /** @type {olx.layer.VectorOptions} */ ({});
+
+ goog.asserts.assert(
+ options.renderOrder === undefined || !options.renderOrder ||
+ typeof options.renderOrder === 'function',
+ 'renderOrder must be a comparator function');
+
+ var baseOptions = ol.object.assign({}, options);
+
+ delete baseOptions.style;
+ delete baseOptions.renderBuffer;
+ delete baseOptions.updateWhileAnimating;
+ delete baseOptions.updateWhileInteracting;
+ ol.layer.Layer.call(this, /** @type {olx.layer.LayerOptions} */ (baseOptions));
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.renderBuffer_ = options.renderBuffer !== undefined ?
+ options.renderBuffer : 100;
+
+ /**
+ * User provided style.
+ * @type {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction}
+ * @private
+ */
+ this.style_ = null;
+
+ /**
+ * Style function for use within the library.
+ * @type {ol.StyleFunction|undefined}
+ * @private
+ */
+ this.styleFunction_ = undefined;
+
+ this.setStyle(options.style);
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.updateWhileAnimating_ = options.updateWhileAnimating !== undefined ?
+ options.updateWhileAnimating : false;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.updateWhileInteracting_ = options.updateWhileInteracting !== undefined ?
+ options.updateWhileInteracting : false;
+
+};
+ol.inherits(ol.layer.Vector, ol.layer.Layer);
+
+
+/**
+ * @return {number|undefined} Render buffer.
+ */
+ol.layer.Vector.prototype.getRenderBuffer = function() {
+ return this.renderBuffer_;
+};
+
+
+/**
+ * @return {function(ol.Feature, ol.Feature): number|null|undefined} Render
+ * order.
+ */
+ol.layer.Vector.prototype.getRenderOrder = function() {
+ return /** @type {function(ol.Feature, ol.Feature):number|null|undefined} */ (
+ this.get(ol.layer.VectorProperty.RENDER_ORDER));
+};
+
+
+/**
+ * Return the associated {@link ol.source.Vector vectorsource} of the layer.
+ * @function
+ * @return {ol.source.Vector} Source.
+ * @api stable
+ */
+ol.layer.Vector.prototype.getSource;
+
+
+/**
+ * Get the style for features. This returns whatever was passed to the `style`
+ * option at construction or to the `setStyle` method.
+ * @return {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction}
+ * Layer style.
+ * @api stable
+ */
+ol.layer.Vector.prototype.getStyle = function() {
+ return this.style_;
+};
+
+
+/**
+ * Get the style function.
+ * @return {ol.StyleFunction|undefined} Layer style function.
+ * @api stable
+ */
+ol.layer.Vector.prototype.getStyleFunction = function() {
+ return this.styleFunction_;
+};
+
+
+/**
+ * @return {boolean} Whether the rendered layer should be updated while
+ * animating.
+ */
+ol.layer.Vector.prototype.getUpdateWhileAnimating = function() {
+ return this.updateWhileAnimating_;
+};
+
+
+/**
+ * @return {boolean} Whether the rendered layer should be updated while
+ * interacting.
+ */
+ol.layer.Vector.prototype.getUpdateWhileInteracting = function() {
+ return this.updateWhileInteracting_;
+};
+
+
+/**
+ * @param {function(ol.Feature, ol.Feature):number|null|undefined} renderOrder
+ * Render order.
+ */
+ol.layer.Vector.prototype.setRenderOrder = function(renderOrder) {
+ goog.asserts.assert(
+ renderOrder === undefined || !renderOrder ||
+ typeof renderOrder === 'function',
+ 'renderOrder must be a comparator function');
+ this.set(ol.layer.VectorProperty.RENDER_ORDER, renderOrder);
+};
+
+
+/**
+ * Set the style for features. This can be a single style object, an array
+ * of styles, or a function that takes a feature and resolution and returns
+ * an array of styles. If it is `undefined` the default style is used. If
+ * it is `null` the layer has no style (a `null` style), so only features
+ * that have their own styles will be rendered in the layer. See
+ * {@link ol.style} for information on the default style.
+ * @param {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction|null|undefined}
+ * style Layer style.
+ * @api stable
+ */
+ol.layer.Vector.prototype.setStyle = function(style) {
+ this.style_ = style !== undefined ? style : ol.style.defaultStyleFunction;
+ this.styleFunction_ = style === null ?
+ undefined : ol.style.createStyleFunction(this.style_);
+ this.changed();
+};
+
+goog.provide('ol.layer.VectorTile');
+
+goog.require('goog.asserts');
+goog.require('ol.layer.Vector');
+goog.require('ol.object');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.VectorTileProperty = {
+ PRELOAD: 'preload',
+ USE_INTERIM_TILES_ON_ERROR: 'useInterimTilesOnError'
+};
+
+
+/**
+ * @enum {string}
+ * Render mode for vector tiles:
+ * * `'image'`: Vector tiles are rendered as images. Great performance, but
+ * point symbols and texts are always rotated with the view and pixels are
+ * scaled during zoom animations.
+ * * `'hybrid'`: Polygon and line elements are rendered as images, so pixels
+ * are scaled during zoom animations. Point symbols and texts are accurately
+ * rendered as vectors and can stay upright on rotated views.
+ * * `'vector'`: Vector tiles are rendered as vectors. Most accurate rendering
+ * even during animations, but slower performance than the other options.
+ * @api
+ */
+ol.layer.VectorTileRenderType = {
+ IMAGE: 'image',
+ HYBRID: 'hybrid',
+ VECTOR: 'vector'
+};
+
+
+/**
+ * @classdesc
+ * Layer for vector tile data that is rendered client-side.
+ * Note that any property set in the options is set as a {@link ol.Object}
+ * property on the layer object; for example, setting `title: 'My Title'` in the
+ * options means that `title` is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.layer.Vector}
+ * @param {olx.layer.VectorTileOptions=} opt_options Options.
+ * @api
+ */
+ol.layer.VectorTile = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ var baseOptions = ol.object.assign({}, options);
+
+ delete baseOptions.preload;
+ delete baseOptions.useInterimTilesOnError;
+ ol.layer.Vector.call(this, /** @type {olx.layer.VectorOptions} */ (baseOptions));
+
+ this.setPreload(options.preload ? options.preload : 0);
+ this.setUseInterimTilesOnError(options.useInterimTilesOnError ?
+ options.useInterimTilesOnError : true);
+
+ goog.asserts.assert(options.renderMode == undefined ||
+ options.renderMode == ol.layer.VectorTileRenderType.IMAGE ||
+ options.renderMode == ol.layer.VectorTileRenderType.HYBRID ||
+ options.renderMode == ol.layer.VectorTileRenderType.VECTOR,
+ 'renderMode needs to be \'image\', \'hybrid\' or \'vector\'');
+
+ /**
+ * @private
+ * @type {ol.layer.VectorTileRenderType|string}
+ */
+ this.renderMode_ = options.renderMode || ol.layer.VectorTileRenderType.HYBRID;
+
+};
+ol.inherits(ol.layer.VectorTile, ol.layer.Vector);
+
+
+/**
+ * Return the level as number to which we will preload tiles up to.
+ * @return {number} The level to preload tiles up to.
+ * @observable
+ * @api
+ */
+ol.layer.VectorTile.prototype.getPreload = function() {
+ return /** @type {number} */ (this.get(ol.layer.VectorTileProperty.PRELOAD));
+};
+
+
+/**
+ * @return {ol.layer.VectorTileRenderType|string} The render mode.
+ */
+ol.layer.VectorTile.prototype.getRenderMode = function() {
+ return this.renderMode_;
+};
+
+
+/**
+ * Whether we use interim tiles on error.
+ * @return {boolean} Use interim tiles on error.
+ * @observable
+ * @api
+ */
+ol.layer.VectorTile.prototype.getUseInterimTilesOnError = function() {
+ return /** @type {boolean} */ (
+ this.get(ol.layer.VectorTileProperty.USE_INTERIM_TILES_ON_ERROR));
+};
+
+
+/**
+ * Set the level as number to which we will preload tiles up to.
+ * @param {number} preload The level to preload tiles up to.
+ * @observable
+ * @api
+ */
+ol.layer.VectorTile.prototype.setPreload = function(preload) {
+ this.set(ol.layer.TileProperty.PRELOAD, preload);
+};
+
+
+/**
+ * Set whether we use interim tiles on error.
+ * @param {boolean} useInterimTilesOnError Use interim tiles on error.
+ * @observable
+ * @api
+ */
+ol.layer.VectorTile.prototype.setUseInterimTilesOnError = function(useInterimTilesOnError) {
+ this.set(
+ ol.layer.TileProperty.USE_INTERIM_TILES_ON_ERROR, useInterimTilesOnError);
+};
+
+// FIXME test, especially polygons with holes and multipolygons
+// FIXME need to handle large thick features (where pixel size matters)
+// FIXME add offset and end to ol.geom.flat.transform.transform2D?
+
+goog.provide('ol.render.canvas.Immediate');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.array');
+goog.require('ol.color');
+goog.require('ol.colorlike');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.flat.transform');
+goog.require('ol.has');
+goog.require('ol.render.VectorContext');
+goog.require('ol.render.canvas');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @classdesc
+ * A concrete subclass of {@link ol.render.VectorContext} that implements
+ * direct rendering of features and geometries to an HTML5 Canvas context.
+ * Instances of this class are created internally by the library and
+ * provided to application code as vectorContext member of the
+ * {@link ol.render.Event} object associated with postcompose, precompose and
+ * render events emitted by layers and maps.
+ *
+ * @constructor
+ * @extends {ol.render.VectorContext}
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.Extent} extent Extent.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @struct
+ */
+ol.render.canvas.Immediate = function(context, pixelRatio, extent, transform, viewRotation) {
+ ol.render.VectorContext.call(this);
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = context;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.pixelRatio_ = pixelRatio;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.extent_ = extent;
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.transform_ = transform;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.viewRotation_ = viewRotation;
+
+ /**
+ * @private
+ * @type {?ol.CanvasFillState}
+ */
+ this.contextFillState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasStrokeState}
+ */
+ this.contextStrokeState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasTextState}
+ */
+ this.contextTextState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasFillState}
+ */
+ this.fillState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasStrokeState}
+ */
+ this.strokeState_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement|HTMLVideoElement|Image}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageAnchorX_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageAnchorY_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageHeight_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageOpacity_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageOriginX_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageOriginY_ = 0;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.imageRotateWithView_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageRotation_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageScale_ = 0;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.imageSnapToPixel_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.imageWidth_ = 0;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.text_ = '';
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textOffsetX_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textOffsetY_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textRotation_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textScale_ = 0;
+
+ /**
+ * @private
+ * @type {?ol.CanvasFillState}
+ */
+ this.textFillState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasStrokeState}
+ */
+ this.textStrokeState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasTextState}
+ */
+ this.textState_ = null;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.pixelCoordinates_ = [];
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.tmpLocalTransform_ = goog.vec.Mat4.createNumber();
+
+};
+ol.inherits(ol.render.canvas.Immediate, ol.render.VectorContext);
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @private
+ */
+ol.render.canvas.Immediate.prototype.drawImages_ = function(flatCoordinates, offset, end, stride) {
+ if (!this.image_) {
+ return;
+ }
+ goog.asserts.assert(offset === 0, 'offset should be 0');
+ goog.asserts.assert(end == flatCoordinates.length,
+ 'end should be equal to the length of flatCoordinates');
+ var pixelCoordinates = ol.geom.flat.transform.transform2D(
+ flatCoordinates, offset, end, 2, this.transform_,
+ this.pixelCoordinates_);
+ var context = this.context_;
+ var localTransform = this.tmpLocalTransform_;
+ var alpha = context.globalAlpha;
+ if (this.imageOpacity_ != 1) {
+ context.globalAlpha = alpha * this.imageOpacity_;
+ }
+ var rotation = this.imageRotation_;
+ if (this.imageRotateWithView_) {
+ rotation += this.viewRotation_;
+ }
+ var i, ii;
+ for (i = 0, ii = pixelCoordinates.length; i < ii; i += 2) {
+ var x = pixelCoordinates[i] - this.imageAnchorX_;
+ var y = pixelCoordinates[i + 1] - this.imageAnchorY_;
+ if (this.imageSnapToPixel_) {
+ x = Math.round(x);
+ y = Math.round(y);
+ }
+ if (rotation !== 0 || this.imageScale_ != 1) {
+ var centerX = x + this.imageAnchorX_;
+ var centerY = y + this.imageAnchorY_;
+ ol.vec.Mat4.makeTransform2D(localTransform,
+ centerX, centerY, this.imageScale_, this.imageScale_,
+ rotation, -centerX, -centerY);
+ context.setTransform(
+ goog.vec.Mat4.getElement(localTransform, 0, 0),
+ goog.vec.Mat4.getElement(localTransform, 1, 0),
+ goog.vec.Mat4.getElement(localTransform, 0, 1),
+ goog.vec.Mat4.getElement(localTransform, 1, 1),
+ goog.vec.Mat4.getElement(localTransform, 0, 3),
+ goog.vec.Mat4.getElement(localTransform, 1, 3));
+ }
+ context.drawImage(this.image_, this.imageOriginX_, this.imageOriginY_,
+ this.imageWidth_, this.imageHeight_, x, y,
+ this.imageWidth_, this.imageHeight_);
+ }
+ if (rotation !== 0 || this.imageScale_ != 1) {
+ context.setTransform(1, 0, 0, 1, 0, 0);
+ }
+ if (this.imageOpacity_ != 1) {
+ context.globalAlpha = alpha;
+ }
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @private
+ */
+ol.render.canvas.Immediate.prototype.drawText_ = function(flatCoordinates, offset, end, stride) {
+ if (!this.textState_ || this.text_ === '') {
+ return;
+ }
+ if (this.textFillState_) {
+ this.setContextFillState_(this.textFillState_);
+ }
+ if (this.textStrokeState_) {
+ this.setContextStrokeState_(this.textStrokeState_);
+ }
+ this.setContextTextState_(this.textState_);
+ goog.asserts.assert(offset === 0, 'offset should be 0');
+ goog.asserts.assert(end == flatCoordinates.length,
+ 'end should be equal to the length of flatCoordinates');
+ var pixelCoordinates = ol.geom.flat.transform.transform2D(
+ flatCoordinates, offset, end, stride, this.transform_,
+ this.pixelCoordinates_);
+ var context = this.context_;
+ for (; offset < end; offset += stride) {
+ var x = pixelCoordinates[offset] + this.textOffsetX_;
+ var y = pixelCoordinates[offset + 1] + this.textOffsetY_;
+ if (this.textRotation_ !== 0 || this.textScale_ != 1) {
+ var localTransform = ol.vec.Mat4.makeTransform2D(this.tmpLocalTransform_,
+ x, y, this.textScale_, this.textScale_, this.textRotation_, -x, -y);
+ context.setTransform(
+ goog.vec.Mat4.getElement(localTransform, 0, 0),
+ goog.vec.Mat4.getElement(localTransform, 1, 0),
+ goog.vec.Mat4.getElement(localTransform, 0, 1),
+ goog.vec.Mat4.getElement(localTransform, 1, 1),
+ goog.vec.Mat4.getElement(localTransform, 0, 3),
+ goog.vec.Mat4.getElement(localTransform, 1, 3));
+ }
+ if (this.textStrokeState_) {
+ context.strokeText(this.text_, x, y);
+ }
+ if (this.textFillState_) {
+ context.fillText(this.text_, x, y);
+ }
+ }
+ if (this.textRotation_ !== 0 || this.textScale_ != 1) {
+ context.setTransform(1, 0, 0, 1, 0, 0);
+ }
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {boolean} close Close.
+ * @private
+ * @return {number} end End.
+ */
+ol.render.canvas.Immediate.prototype.moveToLineTo_ = function(flatCoordinates, offset, end, stride, close) {
+ var context = this.context_;
+ var pixelCoordinates = ol.geom.flat.transform.transform2D(
+ flatCoordinates, offset, end, stride, this.transform_,
+ this.pixelCoordinates_);
+ context.moveTo(pixelCoordinates[0], pixelCoordinates[1]);
+ var length = pixelCoordinates.length;
+ if (close) {
+ length -= 2;
+ }
+ for (var i = 2; i < length; i += 2) {
+ context.lineTo(pixelCoordinates[i], pixelCoordinates[i + 1]);
+ }
+ if (close) {
+ context.closePath();
+ }
+ return end;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @private
+ * @return {number} End.
+ */
+ol.render.canvas.Immediate.prototype.drawRings_ = function(flatCoordinates, offset, ends, stride) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ offset = this.moveToLineTo_(
+ flatCoordinates, offset, ends[i], stride, true);
+ }
+ return offset;
+};
+
+
+/**
+ * Render a circle geometry into the canvas. Rendering is immediate and uses
+ * the current fill and stroke styles.
+ *
+ * @param {ol.geom.Circle} geometry Circle geometry.
+ * @api
+ */
+ol.render.canvas.Immediate.prototype.drawCircle = function(geometry) {
+ if (!ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ if (this.fillState_ || this.strokeState_) {
+ if (this.fillState_) {
+ this.setContextFillState_(this.fillState_);
+ }
+ if (this.strokeState_) {
+ this.setContextStrokeState_(this.strokeState_);
+ }
+ var pixelCoordinates = ol.geom.transformSimpleGeometry2D(
+ geometry, this.transform_, this.pixelCoordinates_);
+ var dx = pixelCoordinates[2] - pixelCoordinates[0];
+ var dy = pixelCoordinates[3] - pixelCoordinates[1];
+ var radius = Math.sqrt(dx * dx + dy * dy);
+ var context = this.context_;
+ context.beginPath();
+ context.arc(
+ pixelCoordinates[0], pixelCoordinates[1], radius, 0, 2 * Math.PI);
+ if (this.fillState_) {
+ context.fill();
+ }
+ if (this.strokeState_) {
+ context.stroke();
+ }
+ }
+ if (this.text_ !== '') {
+ this.drawText_(geometry.getCenter(), 0, 2, 2);
+ }
+};
+
+
+/**
+ * Set the rendering style. Note that since this is an immediate rendering API,
+ * any `zIndex` on the provided style will be ignored.
+ *
+ * @param {ol.style.Style} style The rendering style.
+ * @api
+ */
+ol.render.canvas.Immediate.prototype.setStyle = function(style) {
+ this.setFillStrokeStyle(style.getFill(), style.getStroke());
+ this.setImageStyle(style.getImage());
+ this.setTextStyle(style.getText());
+};
+
+
+/**
+ * Render a geometry into the canvas. Call
+ * {@link ol.render.canvas.Immediate#setStyle} first to set the rendering style.
+ *
+ * @param {ol.geom.Geometry|ol.render.Feature} geometry The geometry to render.
+ * @api
+ */
+ol.render.canvas.Immediate.prototype.drawGeometry = function(geometry) {
+ var type = geometry.getType();
+ switch (type) {
+ case ol.geom.GeometryType.POINT:
+ this.drawPoint(/** @type {ol.geom.Point} */ (geometry));
+ break;
+ case ol.geom.GeometryType.LINE_STRING:
+ this.drawLineString(/** @type {ol.geom.LineString} */ (geometry));
+ break;
+ case ol.geom.GeometryType.POLYGON:
+ this.drawPolygon(/** @type {ol.geom.Polygon} */ (geometry));
+ break;
+ case ol.geom.GeometryType.MULTI_POINT:
+ this.drawMultiPoint(/** @type {ol.geom.MultiPoint} */ (geometry));
+ break;
+ case ol.geom.GeometryType.MULTI_LINE_STRING:
+ this.drawMultiLineString(/** @type {ol.geom.MultiLineString} */ (geometry));
+ break;
+ case ol.geom.GeometryType.MULTI_POLYGON:
+ this.drawMultiPolygon(/** @type {ol.geom.MultiPolygon} */ (geometry));
+ break;
+ case ol.geom.GeometryType.GEOMETRY_COLLECTION:
+ this.drawGeometryCollection(/** @type {ol.geom.GeometryCollection} */ (geometry));
+ break;
+ case ol.geom.GeometryType.CIRCLE:
+ this.drawCircle(/** @type {ol.geom.Circle} */ (geometry));
+ break;
+ default:
+ goog.asserts.fail('Unsupported geometry type: ' + type);
+ }
+};
+
+
+/**
+ * Render a feature into the canvas. Note that any `zIndex` on the provided
+ * style will be ignored - features are rendered immediately in the order that
+ * this method is called. If you need `zIndex` support, you should be using an
+ * {@link ol.layer.Vector} instead.
+ *
+ * @param {ol.Feature} feature Feature.
+ * @param {ol.style.Style} style Style.
+ * @api
+ */
+ol.render.canvas.Immediate.prototype.drawFeature = function(feature, style) {
+ var geometry = style.getGeometryFunction()(feature);
+ if (!geometry ||
+ !ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ this.setStyle(style);
+ goog.asserts.assert(geometry, 'geometry must be truthy');
+ this.drawGeometry(geometry);
+};
+
+
+/**
+ * Render a GeometryCollection to the canvas. Rendering is immediate and
+ * uses the current styles appropriate for each geometry in the collection.
+ *
+ * @param {ol.geom.GeometryCollection} geometry Geometry collection.
+ */
+ol.render.canvas.Immediate.prototype.drawGeometryCollection = function(geometry) {
+ var geometries = geometry.getGeometriesArray();
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ this.drawGeometry(geometries[i]);
+ }
+};
+
+
+/**
+ * Render a Point geometry into the canvas. Rendering is immediate and uses
+ * the current style.
+ *
+ * @param {ol.geom.Point|ol.render.Feature} geometry Point geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawPoint = function(geometry) {
+ var flatCoordinates = geometry.getFlatCoordinates();
+ var stride = geometry.getStride();
+ if (this.image_) {
+ this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
+ }
+ if (this.text_ !== '') {
+ this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
+ }
+};
+
+
+/**
+ * Render a MultiPoint geometry into the canvas. Rendering is immediate and
+ * uses the current style.
+ *
+ * @param {ol.geom.MultiPoint|ol.render.Feature} geometry MultiPoint geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawMultiPoint = function(geometry) {
+ var flatCoordinates = geometry.getFlatCoordinates();
+ var stride = geometry.getStride();
+ if (this.image_) {
+ this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
+ }
+ if (this.text_ !== '') {
+ this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
+ }
+};
+
+
+/**
+ * Render a LineString into the canvas. Rendering is immediate and uses
+ * the current style.
+ *
+ * @param {ol.geom.LineString|ol.render.Feature} geometry LineString geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawLineString = function(geometry) {
+ if (!ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ if (this.strokeState_) {
+ this.setContextStrokeState_(this.strokeState_);
+ var context = this.context_;
+ var flatCoordinates = geometry.getFlatCoordinates();
+ context.beginPath();
+ this.moveToLineTo_(flatCoordinates, 0, flatCoordinates.length,
+ geometry.getStride(), false);
+ context.stroke();
+ }
+ if (this.text_ !== '') {
+ var flatMidpoint = geometry.getFlatMidpoint();
+ this.drawText_(flatMidpoint, 0, 2, 2);
+ }
+};
+
+
+/**
+ * Render a MultiLineString geometry into the canvas. Rendering is immediate
+ * and uses the current style.
+ *
+ * @param {ol.geom.MultiLineString|ol.render.Feature} geometry MultiLineString
+ * geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawMultiLineString = function(geometry) {
+ var geometryExtent = geometry.getExtent();
+ if (!ol.extent.intersects(this.extent_, geometryExtent)) {
+ return;
+ }
+ if (this.strokeState_) {
+ this.setContextStrokeState_(this.strokeState_);
+ var context = this.context_;
+ var flatCoordinates = geometry.getFlatCoordinates();
+ var offset = 0;
+ var ends = geometry.getEnds();
+ var stride = geometry.getStride();
+ context.beginPath();
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ offset = this.moveToLineTo_(
+ flatCoordinates, offset, ends[i], stride, false);
+ }
+ context.stroke();
+ }
+ if (this.text_ !== '') {
+ var flatMidpoints = geometry.getFlatMidpoints();
+ this.drawText_(flatMidpoints, 0, flatMidpoints.length, 2);
+ }
+};
+
+
+/**
+ * Render a Polygon geometry into the canvas. Rendering is immediate and uses
+ * the current style.
+ *
+ * @param {ol.geom.Polygon|ol.render.Feature} geometry Polygon geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawPolygon = function(geometry) {
+ if (!ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ if (this.strokeState_ || this.fillState_) {
+ if (this.fillState_) {
+ this.setContextFillState_(this.fillState_);
+ }
+ if (this.strokeState_) {
+ this.setContextStrokeState_(this.strokeState_);
+ }
+ var context = this.context_;
+ context.beginPath();
+ this.drawRings_(geometry.getOrientedFlatCoordinates(),
+ 0, geometry.getEnds(), geometry.getStride());
+ if (this.fillState_) {
+ context.fill();
+ }
+ if (this.strokeState_) {
+ context.stroke();
+ }
+ }
+ if (this.text_ !== '') {
+ var flatInteriorPoint = geometry.getFlatInteriorPoint();
+ this.drawText_(flatInteriorPoint, 0, 2, 2);
+ }
+};
+
+
+/**
+ * Render MultiPolygon geometry into the canvas. Rendering is immediate and
+ * uses the current style.
+ * @param {ol.geom.MultiPolygon} geometry MultiPolygon geometry.
+ */
+ol.render.canvas.Immediate.prototype.drawMultiPolygon = function(geometry) {
+ if (!ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ if (this.strokeState_ || this.fillState_) {
+ if (this.fillState_) {
+ this.setContextFillState_(this.fillState_);
+ }
+ if (this.strokeState_) {
+ this.setContextStrokeState_(this.strokeState_);
+ }
+ var context = this.context_;
+ var flatCoordinates = geometry.getOrientedFlatCoordinates();
+ var offset = 0;
+ var endss = geometry.getEndss();
+ var stride = geometry.getStride();
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ context.beginPath();
+ offset = this.drawRings_(flatCoordinates, offset, ends, stride);
+ if (this.fillState_) {
+ context.fill();
+ }
+ if (this.strokeState_) {
+ context.stroke();
+ }
+ }
+ }
+ if (this.text_ !== '') {
+ var flatInteriorPoints = geometry.getFlatInteriorPoints();
+ this.drawText_(flatInteriorPoints, 0, flatInteriorPoints.length, 2);
+ }
+};
+
+
+/**
+ * @param {ol.CanvasFillState} fillState Fill state.
+ * @private
+ */
+ol.render.canvas.Immediate.prototype.setContextFillState_ = function(fillState) {
+ var context = this.context_;
+ var contextFillState = this.contextFillState_;
+ if (!contextFillState) {
+ context.fillStyle = fillState.fillStyle;
+ this.contextFillState_ = {
+ fillStyle: fillState.fillStyle
+ };
+ } else {
+ if (contextFillState.fillStyle != fillState.fillStyle) {
+ contextFillState.fillStyle = context.fillStyle = fillState.fillStyle;
+ }
+ }
+};
+
+
+/**
+ * @param {ol.CanvasStrokeState} strokeState Stroke state.
+ * @private
+ */
+ol.render.canvas.Immediate.prototype.setContextStrokeState_ = function(strokeState) {
+ var context = this.context_;
+ var contextStrokeState = this.contextStrokeState_;
+ if (!contextStrokeState) {
+ context.lineCap = strokeState.lineCap;
+ if (ol.has.CANVAS_LINE_DASH) {
+ context.setLineDash(strokeState.lineDash);
+ }
+ context.lineJoin = strokeState.lineJoin;
+ context.lineWidth = strokeState.lineWidth;
+ context.miterLimit = strokeState.miterLimit;
+ context.strokeStyle = strokeState.strokeStyle;
+ this.contextStrokeState_ = {
+ lineCap: strokeState.lineCap,
+ lineDash: strokeState.lineDash,
+ lineJoin: strokeState.lineJoin,
+ lineWidth: strokeState.lineWidth,
+ miterLimit: strokeState.miterLimit,
+ strokeStyle: strokeState.strokeStyle
+ };
+ } else {
+ if (contextStrokeState.lineCap != strokeState.lineCap) {
+ contextStrokeState.lineCap = context.lineCap = strokeState.lineCap;
+ }
+ if (ol.has.CANVAS_LINE_DASH) {
+ if (!ol.array.equals(
+ contextStrokeState.lineDash, strokeState.lineDash)) {
+ context.setLineDash(contextStrokeState.lineDash = strokeState.lineDash);
+ }
+ }
+ if (contextStrokeState.lineJoin != strokeState.lineJoin) {
+ contextStrokeState.lineJoin = context.lineJoin = strokeState.lineJoin;
+ }
+ if (contextStrokeState.lineWidth != strokeState.lineWidth) {
+ contextStrokeState.lineWidth = context.lineWidth = strokeState.lineWidth;
+ }
+ if (contextStrokeState.miterLimit != strokeState.miterLimit) {
+ contextStrokeState.miterLimit = context.miterLimit =
+ strokeState.miterLimit;
+ }
+ if (contextStrokeState.strokeStyle != strokeState.strokeStyle) {
+ contextStrokeState.strokeStyle = context.strokeStyle =
+ strokeState.strokeStyle;
+ }
+ }
+};
+
+
+/**
+ * @param {ol.CanvasTextState} textState Text state.
+ * @private
+ */
+ol.render.canvas.Immediate.prototype.setContextTextState_ = function(textState) {
+ var context = this.context_;
+ var contextTextState = this.contextTextState_;
+ if (!contextTextState) {
+ context.font = textState.font;
+ context.textAlign = textState.textAlign;
+ context.textBaseline = textState.textBaseline;
+ this.contextTextState_ = {
+ font: textState.font,
+ textAlign: textState.textAlign,
+ textBaseline: textState.textBaseline
+ };
+ } else {
+ if (contextTextState.font != textState.font) {
+ contextTextState.font = context.font = textState.font;
+ }
+ if (contextTextState.textAlign != textState.textAlign) {
+ contextTextState.textAlign = context.textAlign = textState.textAlign;
+ }
+ if (contextTextState.textBaseline != textState.textBaseline) {
+ contextTextState.textBaseline = context.textBaseline =
+ textState.textBaseline;
+ }
+ }
+};
+
+
+/**
+ * Set the fill and stroke style for subsequent draw operations. To clear
+ * either fill or stroke styles, pass null for the appropriate parameter.
+ *
+ * @param {ol.style.Fill} fillStyle Fill style.
+ * @param {ol.style.Stroke} strokeStyle Stroke style.
+ */
+ol.render.canvas.Immediate.prototype.setFillStrokeStyle = function(fillStyle, strokeStyle) {
+ if (!fillStyle) {
+ this.fillState_ = null;
+ } else {
+ var fillStyleColor = fillStyle.getColor();
+ this.fillState_ = {
+ fillStyle: ol.colorlike.asColorLike(fillStyleColor ?
+ fillStyleColor : ol.render.canvas.defaultFillStyle)
+ };
+ }
+ if (!strokeStyle) {
+ this.strokeState_ = null;
+ } else {
+ var strokeStyleColor = strokeStyle.getColor();
+ var strokeStyleLineCap = strokeStyle.getLineCap();
+ var strokeStyleLineDash = strokeStyle.getLineDash();
+ var strokeStyleLineJoin = strokeStyle.getLineJoin();
+ var strokeStyleWidth = strokeStyle.getWidth();
+ var strokeStyleMiterLimit = strokeStyle.getMiterLimit();
+ this.strokeState_ = {
+ lineCap: strokeStyleLineCap !== undefined ?
+ strokeStyleLineCap : ol.render.canvas.defaultLineCap,
+ lineDash: strokeStyleLineDash ?
+ strokeStyleLineDash : ol.render.canvas.defaultLineDash,
+ lineJoin: strokeStyleLineJoin !== undefined ?
+ strokeStyleLineJoin : ol.render.canvas.defaultLineJoin,
+ lineWidth: this.pixelRatio_ * (strokeStyleWidth !== undefined ?
+ strokeStyleWidth : ol.render.canvas.defaultLineWidth),
+ miterLimit: strokeStyleMiterLimit !== undefined ?
+ strokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit,
+ strokeStyle: ol.color.asString(strokeStyleColor ?
+ strokeStyleColor : ol.render.canvas.defaultStrokeStyle)
+ };
+ }
+};
+
+
+/**
+ * Set the image style for subsequent draw operations. Pass null to remove
+ * the image style.
+ *
+ * @param {ol.style.Image} imageStyle Image style.
+ */
+ol.render.canvas.Immediate.prototype.setImageStyle = function(imageStyle) {
+ if (!imageStyle) {
+ this.image_ = null;
+ } else {
+ var imageAnchor = imageStyle.getAnchor();
+ // FIXME pixel ratio
+ var imageImage = imageStyle.getImage(1);
+ var imageOrigin = imageStyle.getOrigin();
+ var imageSize = imageStyle.getSize();
+ goog.asserts.assert(imageAnchor, 'imageAnchor must be truthy');
+ goog.asserts.assert(imageImage, 'imageImage must be truthy');
+ goog.asserts.assert(imageOrigin, 'imageOrigin must be truthy');
+ goog.asserts.assert(imageSize, 'imageSize must be truthy');
+ this.imageAnchorX_ = imageAnchor[0];
+ this.imageAnchorY_ = imageAnchor[1];
+ this.imageHeight_ = imageSize[1];
+ this.image_ = imageImage;
+ this.imageOpacity_ = imageStyle.getOpacity();
+ this.imageOriginX_ = imageOrigin[0];
+ this.imageOriginY_ = imageOrigin[1];
+ this.imageRotateWithView_ = imageStyle.getRotateWithView();
+ this.imageRotation_ = imageStyle.getRotation();
+ this.imageScale_ = imageStyle.getScale();
+ this.imageSnapToPixel_ = imageStyle.getSnapToPixel();
+ this.imageWidth_ = imageSize[0];
+ }
+};
+
+
+/**
+ * Set the text style for subsequent draw operations. Pass null to
+ * remove the text style.
+ *
+ * @param {ol.style.Text} textStyle Text style.
+ */
+ol.render.canvas.Immediate.prototype.setTextStyle = function(textStyle) {
+ if (!textStyle) {
+ this.text_ = '';
+ } else {
+ var textFillStyle = textStyle.getFill();
+ if (!textFillStyle) {
+ this.textFillState_ = null;
+ } else {
+ var textFillStyleColor = textFillStyle.getColor();
+ this.textFillState_ = {
+ fillStyle: ol.colorlike.asColorLike(textFillStyleColor ?
+ textFillStyleColor : ol.render.canvas.defaultFillStyle)
+ };
+ }
+ var textStrokeStyle = textStyle.getStroke();
+ if (!textStrokeStyle) {
+ this.textStrokeState_ = null;
+ } else {
+ var textStrokeStyleColor = textStrokeStyle.getColor();
+ var textStrokeStyleLineCap = textStrokeStyle.getLineCap();
+ var textStrokeStyleLineDash = textStrokeStyle.getLineDash();
+ var textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();
+ var textStrokeStyleWidth = textStrokeStyle.getWidth();
+ var textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();
+ this.textStrokeState_ = {
+ lineCap: textStrokeStyleLineCap !== undefined ?
+ textStrokeStyleLineCap : ol.render.canvas.defaultLineCap,
+ lineDash: textStrokeStyleLineDash ?
+ textStrokeStyleLineDash : ol.render.canvas.defaultLineDash,
+ lineJoin: textStrokeStyleLineJoin !== undefined ?
+ textStrokeStyleLineJoin : ol.render.canvas.defaultLineJoin,
+ lineWidth: textStrokeStyleWidth !== undefined ?
+ textStrokeStyleWidth : ol.render.canvas.defaultLineWidth,
+ miterLimit: textStrokeStyleMiterLimit !== undefined ?
+ textStrokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit,
+ strokeStyle: ol.color.asString(textStrokeStyleColor ?
+ textStrokeStyleColor : ol.render.canvas.defaultStrokeStyle)
+ };
+ }
+ var textFont = textStyle.getFont();
+ var textOffsetX = textStyle.getOffsetX();
+ var textOffsetY = textStyle.getOffsetY();
+ var textRotation = textStyle.getRotation();
+ var textScale = textStyle.getScale();
+ var textText = textStyle.getText();
+ var textTextAlign = textStyle.getTextAlign();
+ var textTextBaseline = textStyle.getTextBaseline();
+ this.textState_ = {
+ font: textFont !== undefined ?
+ textFont : ol.render.canvas.defaultFont,
+ textAlign: textTextAlign !== undefined ?
+ textTextAlign : ol.render.canvas.defaultTextAlign,
+ textBaseline: textTextBaseline !== undefined ?
+ textTextBaseline : ol.render.canvas.defaultTextBaseline
+ };
+ this.text_ = textText !== undefined ? textText : '';
+ this.textOffsetX_ =
+ textOffsetX !== undefined ? (this.pixelRatio_ * textOffsetX) : 0;
+ this.textOffsetY_ =
+ textOffsetY !== undefined ? (this.pixelRatio_ * textOffsetY) : 0;
+ this.textRotation_ = textRotation !== undefined ? textRotation : 0;
+ this.textScale_ = this.pixelRatio_ * (textScale !== undefined ?
+ textScale : 1);
+ }
+};
+
+goog.provide('ol.renderer.canvas.Layer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.extent');
+goog.require('ol.layer.Layer');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.renderer.Layer');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Layer}
+ * @param {ol.layer.Layer} layer Layer.
+ */
+ol.renderer.canvas.Layer = function(layer) {
+
+ ol.renderer.Layer.call(this, layer);
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumber();
+
+};
+ol.inherits(ol.renderer.canvas.Layer, ol.renderer.Layer);
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @param {CanvasRenderingContext2D} context Context.
+ */
+ol.renderer.canvas.Layer.prototype.composeFrame = function(frameState, layerState, context) {
+
+ this.dispatchPreComposeEvent(context, frameState);
+
+ var image = this.getImage();
+ if (image) {
+
+ // clipped rendering if layer extent is set
+ var extent = layerState.extent;
+ var clipped = extent !== undefined;
+ if (clipped) {
+ goog.asserts.assert(extent !== undefined,
+ 'layerState extent is defined');
+ var pixelRatio = frameState.pixelRatio;
+ var width = frameState.size[0] * pixelRatio;
+ var height = frameState.size[1] * pixelRatio;
+ var rotation = frameState.viewState.rotation;
+ var topLeft = ol.extent.getTopLeft(extent);
+ var topRight = ol.extent.getTopRight(extent);
+ var bottomRight = ol.extent.getBottomRight(extent);
+ var bottomLeft = ol.extent.getBottomLeft(extent);
+
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ topLeft, topLeft);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ topRight, topRight);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ bottomRight, bottomRight);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ bottomLeft, bottomLeft);
+
+ context.save();
+ ol.render.canvas.rotateAtOffset(context, -rotation, width / 2, height / 2);
+ context.beginPath();
+ context.moveTo(topLeft[0] * pixelRatio, topLeft[1] * pixelRatio);
+ context.lineTo(topRight[0] * pixelRatio, topRight[1] * pixelRatio);
+ context.lineTo(bottomRight[0] * pixelRatio, bottomRight[1] * pixelRatio);
+ context.lineTo(bottomLeft[0] * pixelRatio, bottomLeft[1] * pixelRatio);
+ context.clip();
+ ol.render.canvas.rotateAtOffset(context, rotation, width / 2, height / 2);
+ }
+
+ var imageTransform = this.getImageTransform();
+ // for performance reasons, context.save / context.restore is not used
+ // to save and restore the transformation matrix and the opacity.
+ // see http://jsperf.com/context-save-restore-versus-variable
+ var alpha = context.globalAlpha;
+ context.globalAlpha = layerState.opacity;
+
+ // for performance reasons, context.setTransform is only used
+ // when the view is rotated. see http://jsperf.com/canvas-transform
+ var dx = goog.vec.Mat4.getElement(imageTransform, 0, 3);
+ var dy = goog.vec.Mat4.getElement(imageTransform, 1, 3);
+ var dw = image.width * goog.vec.Mat4.getElement(imageTransform, 0, 0);
+ var dh = image.height * goog.vec.Mat4.getElement(imageTransform, 1, 1);
+ context.drawImage(image, 0, 0, +image.width, +image.height,
+ Math.round(dx), Math.round(dy), Math.round(dw), Math.round(dh));
+ context.globalAlpha = alpha;
+
+ if (clipped) {
+ context.restore();
+ }
+ }
+
+ this.dispatchPostComposeEvent(context, frameState);
+
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {goog.vec.Mat4.Number=} opt_transform Transform.
+ * @private
+ */
+ol.renderer.canvas.Layer.prototype.dispatchComposeEvent_ = function(type, context, frameState, opt_transform) {
+ var layer = this.getLayer();
+ if (layer.hasListener(type)) {
+ var width = frameState.size[0] * frameState.pixelRatio;
+ var height = frameState.size[1] * frameState.pixelRatio;
+ var rotation = frameState.viewState.rotation;
+ ol.render.canvas.rotateAtOffset(context, -rotation, width / 2, height / 2);
+ var transform = opt_transform !== undefined ?
+ opt_transform : this.getTransform(frameState, 0);
+ var render = new ol.render.canvas.Immediate(
+ context, frameState.pixelRatio, frameState.extent, transform,
+ frameState.viewState.rotation);
+ var composeEvent = new ol.render.Event(type, layer, render, frameState,
+ context, null);
+ layer.dispatchEvent(composeEvent);
+ ol.render.canvas.rotateAtOffset(context, rotation, width / 2, height / 2);
+ }
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {goog.vec.Mat4.Number=} opt_transform Transform.
+ * @protected
+ */
+ol.renderer.canvas.Layer.prototype.dispatchPostComposeEvent = function(context, frameState, opt_transform) {
+ this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, context,
+ frameState, opt_transform);
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {goog.vec.Mat4.Number=} opt_transform Transform.
+ * @protected
+ */
+ol.renderer.canvas.Layer.prototype.dispatchPreComposeEvent = function(context, frameState, opt_transform) {
+ this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, context,
+ frameState, opt_transform);
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {goog.vec.Mat4.Number=} opt_transform Transform.
+ * @protected
+ */
+ol.renderer.canvas.Layer.prototype.dispatchRenderEvent = function(context, frameState, opt_transform) {
+ this.dispatchComposeEvent_(ol.render.EventType.RENDER, context,
+ frameState, opt_transform);
+};
+
+
+/**
+ * @return {HTMLCanvasElement|HTMLVideoElement|Image} Canvas.
+ */
+ol.renderer.canvas.Layer.prototype.getImage = goog.abstractMethod;
+
+
+/**
+ * @return {!goog.vec.Mat4.Number} Image transform.
+ */
+ol.renderer.canvas.Layer.prototype.getImageTransform = goog.abstractMethod;
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {number} offsetX Offset on the x-axis in view coordinates.
+ * @protected
+ * @return {!goog.vec.Mat4.Number} Transform.
+ */
+ol.renderer.canvas.Layer.prototype.getTransform = function(frameState, offsetX) {
+ var viewState = frameState.viewState;
+ var pixelRatio = frameState.pixelRatio;
+ return ol.vec.Mat4.makeTransform2D(this.transform_,
+ pixelRatio * frameState.size[0] / 2,
+ pixelRatio * frameState.size[1] / 2,
+ pixelRatio / viewState.resolution,
+ -pixelRatio / viewState.resolution,
+ -viewState.rotation,
+ -viewState.center[0] + offsetX,
+ -viewState.center[1]);
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @return {boolean} whether composeFrame should be called.
+ */
+ol.renderer.canvas.Layer.prototype.prepareFrame = goog.abstractMethod;
+
+
+/**
+ * @param {ol.Pixel} pixelOnMap Pixel.
+ * @param {goog.vec.Mat4.Number} imageTransformInv The transformation matrix
+ * to convert from a map pixel to a canvas pixel.
+ * @return {ol.Pixel} The pixel.
+ * @protected
+ */
+ol.renderer.canvas.Layer.prototype.getPixelOnCanvas = function(pixelOnMap, imageTransformInv) {
+ var pixelOnCanvas = [0, 0];
+ ol.vec.Mat4.multVec2(imageTransformInv, pixelOnMap, pixelOnCanvas);
+ return pixelOnCanvas;
+};
+
+goog.provide('ol.render.IReplayGroup');
+
+goog.require('ol.render.VectorContext');
+
+
+/**
+ * @enum {string}
+ */
+ol.render.ReplayType = {
+ IMAGE: 'Image',
+ LINE_STRING: 'LineString',
+ POLYGON: 'Polygon',
+ TEXT: 'Text'
+};
+
+
+/**
+ * @const
+ * @type {Array.<ol.render.ReplayType>}
+ */
+ol.render.REPLAY_ORDER = [
+ ol.render.ReplayType.POLYGON,
+ ol.render.ReplayType.LINE_STRING,
+ ol.render.ReplayType.IMAGE,
+ ol.render.ReplayType.TEXT
+];
+
+
+/**
+ * @interface
+ */
+ol.render.IReplayGroup = function() {
+};
+
+
+/* eslint-disable valid-jsdoc */
+// TODO: enable valid-jsdoc for @interface methods when this issue is resolved
+// https://github.com/eslint/eslint/issues/4887
+
+
+/**
+ * @param {number|undefined} zIndex Z index.
+ * @param {ol.render.ReplayType} replayType Replay type.
+ * @return {ol.render.VectorContext} Replay.
+ */
+ol.render.IReplayGroup.prototype.getReplay = function(zIndex, replayType) {
+};
+
+
+/**
+ * @return {boolean} Is empty.
+ */
+ol.render.IReplayGroup.prototype.isEmpty = function() {
+};
+
+// FIXME add option to apply snapToPixel to all coordinates?
+// FIXME can eliminate empty set styles and strokes (when all geoms skipped)
+
+goog.provide('ol.render.canvas.ImageReplay');
+goog.provide('ol.render.canvas.LineStringReplay');
+goog.provide('ol.render.canvas.PolygonReplay');
+goog.provide('ol.render.canvas.Replay');
+goog.provide('ol.render.canvas.ReplayGroup');
+goog.provide('ol.render.canvas.TextReplay');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.color');
+goog.require('ol.colorlike');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.extent.Relationship');
+goog.require('ol.geom.flat.simplify');
+goog.require('ol.geom.flat.transform');
+goog.require('ol.has');
+goog.require('ol.object');
+goog.require('ol.render.IReplayGroup');
+goog.require('ol.render.VectorContext');
+goog.require('ol.render.canvas');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @enum {number}
+ */
+ol.render.canvas.Instruction = {
+ BEGIN_GEOMETRY: 0,
+ BEGIN_PATH: 1,
+ CIRCLE: 2,
+ CLOSE_PATH: 3,
+ DRAW_IMAGE: 4,
+ DRAW_TEXT: 5,
+ END_GEOMETRY: 6,
+ FILL: 7,
+ MOVE_TO_LINE_TO: 8,
+ SET_FILL_STYLE: 9,
+ SET_STROKE_STYLE: 10,
+ SET_TEXT_STYLE: 11,
+ STROKE: 12
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.render.VectorContext}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Maximum extent.
+ * @param {number} resolution Resolution.
+ * @protected
+ * @struct
+ */
+ol.render.canvas.Replay = function(tolerance, maxExtent, resolution) {
+ ol.render.VectorContext.call(this);
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.tolerance = tolerance;
+
+ /**
+ * @protected
+ * @const
+ * @type {ol.Extent}
+ */
+ this.maxExtent = maxExtent;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.bufferedMaxExtent_ = null;
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.maxLineWidth = 0;
+
+ /**
+ * @protected
+ * @const
+ * @type {number}
+ */
+ this.resolution = resolution;
+
+ /**
+ * @private
+ * @type {Array.<*>}
+ */
+ this.beginGeometryInstruction1_ = null;
+
+ /**
+ * @private
+ * @type {Array.<*>}
+ */
+ this.beginGeometryInstruction2_ = null;
+
+ /**
+ * @protected
+ * @type {Array.<*>}
+ */
+ this.instructions = [];
+
+ /**
+ * @protected
+ * @type {Array.<number>}
+ */
+ this.coordinates = [];
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.renderedTransform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @protected
+ * @type {Array.<*>}
+ */
+ this.hitDetectionInstructions = [];
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.pixelCoordinates_ = [];
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.tmpLocalTransform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.tmpLocalTransformInv_ = goog.vec.Mat4.createNumber();
+};
+ol.inherits(ol.render.canvas.Replay, ol.render.VectorContext);
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {boolean} close Close.
+ * @protected
+ * @return {number} My end.
+ */
+ol.render.canvas.Replay.prototype.appendFlatCoordinates = function(flatCoordinates, offset, end, stride, close) {
+
+ var myEnd = this.coordinates.length;
+ var extent = this.getBufferedMaxExtent();
+ var lastCoord = [flatCoordinates[offset], flatCoordinates[offset + 1]];
+ var nextCoord = [NaN, NaN];
+ var skipped = true;
+
+ var i, lastRel, nextRel;
+ for (i = offset + stride; i < end; i += stride) {
+ nextCoord[0] = flatCoordinates[i];
+ nextCoord[1] = flatCoordinates[i + 1];
+ nextRel = ol.extent.coordinateRelationship(extent, nextCoord);
+ if (nextRel !== lastRel) {
+ if (skipped) {
+ this.coordinates[myEnd++] = lastCoord[0];
+ this.coordinates[myEnd++] = lastCoord[1];
+ }
+ this.coordinates[myEnd++] = nextCoord[0];
+ this.coordinates[myEnd++] = nextCoord[1];
+ skipped = false;
+ } else if (nextRel === ol.extent.Relationship.INTERSECTING) {
+ this.coordinates[myEnd++] = nextCoord[0];
+ this.coordinates[myEnd++] = nextCoord[1];
+ skipped = false;
+ } else {
+ skipped = true;
+ }
+ lastCoord[0] = nextCoord[0];
+ lastCoord[1] = nextCoord[1];
+ lastRel = nextRel;
+ }
+
+ // handle case where there is only one point to append
+ if (i === offset + stride) {
+ this.coordinates[myEnd++] = lastCoord[0];
+ this.coordinates[myEnd++] = lastCoord[1];
+ }
+
+ if (close) {
+ this.coordinates[myEnd++] = flatCoordinates[offset];
+ this.coordinates[myEnd++] = flatCoordinates[offset + 1];
+ }
+ return myEnd;
+};
+
+
+/**
+ * @protected
+ * @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.canvas.Replay.prototype.beginGeometry = function(geometry, feature) {
+ this.beginGeometryInstruction1_ =
+ [ol.render.canvas.Instruction.BEGIN_GEOMETRY, feature, 0];
+ this.instructions.push(this.beginGeometryInstruction1_);
+ this.beginGeometryInstruction2_ =
+ [ol.render.canvas.Instruction.BEGIN_GEOMETRY, feature, 0];
+ this.hitDetectionInstructions.push(this.beginGeometryInstruction2_);
+};
+
+
+/**
+ * @private
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {Array.<*>} instructions Instructions array.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined}
+ * featureCallback Feature callback.
+ * @param {ol.Extent=} opt_hitExtent Only check features that intersect this
+ * extent.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.canvas.Replay.prototype.replay_ = function(
+ context, pixelRatio, transform, viewRotation, skippedFeaturesHash,
+ instructions, featureCallback, opt_hitExtent) {
+ /** @type {Array.<number>} */
+ var pixelCoordinates;
+ if (ol.vec.Mat4.equals2D(transform, this.renderedTransform_)) {
+ pixelCoordinates = this.pixelCoordinates_;
+ } else {
+ pixelCoordinates = ol.geom.flat.transform.transform2D(
+ this.coordinates, 0, this.coordinates.length, 2,
+ transform, this.pixelCoordinates_);
+ goog.vec.Mat4.setFromArray(this.renderedTransform_, transform);
+ goog.asserts.assert(pixelCoordinates === this.pixelCoordinates_,
+ 'pixelCoordinates should be the same as this.pixelCoordinates_');
+ }
+ var skipFeatures = !ol.object.isEmpty(skippedFeaturesHash);
+ var i = 0; // instruction index
+ var ii = instructions.length; // end of instructions
+ var d = 0; // data index
+ var dd; // end of per-instruction data
+ var localTransform = this.tmpLocalTransform_;
+ var localTransformInv = this.tmpLocalTransformInv_;
+ var prevX, prevY, roundX, roundY;
+ while (i < ii) {
+ var instruction = instructions[i];
+ var type = /** @type {ol.render.canvas.Instruction} */ (instruction[0]);
+ var feature, fill, stroke, text, x, y;
+ switch (type) {
+ case ol.render.canvas.Instruction.BEGIN_GEOMETRY:
+ feature = /** @type {ol.Feature|ol.render.Feature} */ (instruction[1]);
+ if ((skipFeatures &&
+ skippedFeaturesHash[goog.getUid(feature).toString()]) ||
+ !feature.getGeometry()) {
+ i = /** @type {number} */ (instruction[2]);
+ } else if (opt_hitExtent !== undefined && !ol.extent.intersects(
+ opt_hitExtent, feature.getGeometry().getExtent())) {
+ i = /** @type {number} */ (instruction[2]);
+ } else {
+ ++i;
+ }
+ break;
+ case ol.render.canvas.Instruction.BEGIN_PATH:
+ context.beginPath();
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.CIRCLE:
+ goog.asserts.assert(goog.isNumber(instruction[1]),
+ 'second instruction should be a number');
+ d = /** @type {number} */ (instruction[1]);
+ var x1 = pixelCoordinates[d];
+ var y1 = pixelCoordinates[d + 1];
+ var x2 = pixelCoordinates[d + 2];
+ var y2 = pixelCoordinates[d + 3];
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+ var r = Math.sqrt(dx * dx + dy * dy);
+ context.arc(x1, y1, r, 0, 2 * Math.PI, true);
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.CLOSE_PATH:
+ context.closePath();
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.DRAW_IMAGE:
+ goog.asserts.assert(goog.isNumber(instruction[1]),
+ 'second instruction should be a number');
+ d = /** @type {number} */ (instruction[1]);
+ goog.asserts.assert(goog.isNumber(instruction[2]),
+ 'third instruction should be a number');
+ dd = /** @type {number} */ (instruction[2]);
+ var image = /** @type {HTMLCanvasElement|HTMLVideoElement|Image} */
+ (instruction[3]);
+ // Remaining arguments in DRAW_IMAGE are in alphabetical order
+ var anchorX = /** @type {number} */ (instruction[4]) * pixelRatio;
+ var anchorY = /** @type {number} */ (instruction[5]) * pixelRatio;
+ var height = /** @type {number} */ (instruction[6]);
+ var opacity = /** @type {number} */ (instruction[7]);
+ var originX = /** @type {number} */ (instruction[8]);
+ var originY = /** @type {number} */ (instruction[9]);
+ var rotateWithView = /** @type {boolean} */ (instruction[10]);
+ var rotation = /** @type {number} */ (instruction[11]);
+ var scale = /** @type {number} */ (instruction[12]);
+ var snapToPixel = /** @type {boolean} */ (instruction[13]);
+ var width = /** @type {number} */ (instruction[14]);
+ if (rotateWithView) {
+ rotation += viewRotation;
+ }
+ for (; d < dd; d += 2) {
+ x = pixelCoordinates[d] - anchorX;
+ y = pixelCoordinates[d + 1] - anchorY;
+ if (snapToPixel) {
+ x = Math.round(x);
+ y = Math.round(y);
+ }
+ if (scale != 1 || rotation !== 0) {
+ var centerX = x + anchorX;
+ var centerY = y + anchorY;
+ ol.vec.Mat4.makeTransform2D(
+ localTransform, centerX, centerY, scale, scale,
+ rotation, -centerX, -centerY);
+ context.transform(
+ goog.vec.Mat4.getElement(localTransform, 0, 0),
+ goog.vec.Mat4.getElement(localTransform, 1, 0),
+ goog.vec.Mat4.getElement(localTransform, 0, 1),
+ goog.vec.Mat4.getElement(localTransform, 1, 1),
+ goog.vec.Mat4.getElement(localTransform, 0, 3),
+ goog.vec.Mat4.getElement(localTransform, 1, 3));
+ }
+ var alpha = context.globalAlpha;
+ if (opacity != 1) {
+ context.globalAlpha = alpha * opacity;
+ }
+
+ var w = (width + originX > image.width) ? image.width - originX : width;
+ var h = (height + originY > image.height) ? image.height - originY : height;
+
+ context.drawImage(image, originX, originY, w, h,
+ x, y, w * pixelRatio, h * pixelRatio);
+
+ if (opacity != 1) {
+ context.globalAlpha = alpha;
+ }
+ if (scale != 1 || rotation !== 0) {
+ goog.vec.Mat4.invert(localTransform, localTransformInv);
+ context.transform(
+ goog.vec.Mat4.getElement(localTransformInv, 0, 0),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 0),
+ goog.vec.Mat4.getElement(localTransformInv, 0, 1),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 1),
+ goog.vec.Mat4.getElement(localTransformInv, 0, 3),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 3));
+ }
+ }
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.DRAW_TEXT:
+ goog.asserts.assert(goog.isNumber(instruction[1]),
+ '2nd instruction should be a number');
+ d = /** @type {number} */ (instruction[1]);
+ goog.asserts.assert(goog.isNumber(instruction[2]),
+ '3rd instruction should be a number');
+ dd = /** @type {number} */ (instruction[2]);
+ goog.asserts.assert(typeof instruction[3] === 'string',
+ '4th instruction should be a string');
+ text = /** @type {string} */ (instruction[3]);
+ goog.asserts.assert(goog.isNumber(instruction[4]),
+ '5th instruction should be a number');
+ var offsetX = /** @type {number} */ (instruction[4]) * pixelRatio;
+ goog.asserts.assert(goog.isNumber(instruction[5]),
+ '6th instruction should be a number');
+ var offsetY = /** @type {number} */ (instruction[5]) * pixelRatio;
+ goog.asserts.assert(goog.isNumber(instruction[6]),
+ '7th instruction should be a number');
+ rotation = /** @type {number} */ (instruction[6]);
+ goog.asserts.assert(goog.isNumber(instruction[7]),
+ '8th instruction should be a number');
+ scale = /** @type {number} */ (instruction[7]) * pixelRatio;
+ goog.asserts.assert(typeof instruction[8] === 'boolean',
+ '9th instruction should be a boolean');
+ fill = /** @type {boolean} */ (instruction[8]);
+ goog.asserts.assert(typeof instruction[9] === 'boolean',
+ '10th instruction should be a boolean');
+ stroke = /** @type {boolean} */ (instruction[9]);
+ for (; d < dd; d += 2) {
+ x = pixelCoordinates[d] + offsetX;
+ y = pixelCoordinates[d + 1] + offsetY;
+ if (scale != 1 || rotation !== 0) {
+ ol.vec.Mat4.makeTransform2D(
+ localTransform, x, y, scale, scale, rotation, -x, -y);
+ context.transform(
+ goog.vec.Mat4.getElement(localTransform, 0, 0),
+ goog.vec.Mat4.getElement(localTransform, 1, 0),
+ goog.vec.Mat4.getElement(localTransform, 0, 1),
+ goog.vec.Mat4.getElement(localTransform, 1, 1),
+ goog.vec.Mat4.getElement(localTransform, 0, 3),
+ goog.vec.Mat4.getElement(localTransform, 1, 3));
+ }
+
+ // Support multiple lines separated by \n
+ var lines = text.split('\n');
+ var numLines = lines.length;
+ var fontSize, lineY;
+ if (numLines > 1) {
+ // Estimate line height using width of capital M, and add padding
+ fontSize = Math.round(context.measureText('M').width * 1.5);
+ lineY = y - (((numLines - 1) / 2) * fontSize);
+ } else {
+ // No need to calculate line height/offset for a single line
+ fontSize = 0;
+ lineY = y;
+ }
+
+ for (var lineIndex = 0; lineIndex < numLines; lineIndex++) {
+ var line = lines[lineIndex];
+ if (stroke) {
+ context.strokeText(line, x, lineY);
+ }
+ if (fill) {
+ context.fillText(line, x, lineY);
+ }
+
+ // Move next line down by fontSize px
+ lineY = lineY + fontSize;
+ }
+
+ if (scale != 1 || rotation !== 0) {
+ goog.vec.Mat4.invert(localTransform, localTransformInv);
+ context.transform(
+ goog.vec.Mat4.getElement(localTransformInv, 0, 0),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 0),
+ goog.vec.Mat4.getElement(localTransformInv, 0, 1),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 1),
+ goog.vec.Mat4.getElement(localTransformInv, 0, 3),
+ goog.vec.Mat4.getElement(localTransformInv, 1, 3));
+ }
+ }
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.END_GEOMETRY:
+ if (featureCallback !== undefined) {
+ feature =
+ /** @type {ol.Feature|ol.render.Feature} */ (instruction[1]);
+ var result = featureCallback(feature);
+ if (result) {
+ return result;
+ }
+ }
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.FILL:
+ context.fill();
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.MOVE_TO_LINE_TO:
+ goog.asserts.assert(goog.isNumber(instruction[1]),
+ '2nd instruction should be a number');
+ d = /** @type {number} */ (instruction[1]);
+ goog.asserts.assert(goog.isNumber(instruction[2]),
+ '3rd instruction should be a number');
+ dd = /** @type {number} */ (instruction[2]);
+ x = pixelCoordinates[d];
+ y = pixelCoordinates[d + 1];
+ roundX = (x + 0.5) | 0;
+ roundY = (y + 0.5) | 0;
+ if (roundX !== prevX || roundY !== prevY) {
+ context.moveTo(x, y);
+ prevX = roundX;
+ prevY = roundY;
+ }
+ for (d += 2; d < dd; d += 2) {
+ x = pixelCoordinates[d];
+ y = pixelCoordinates[d + 1];
+ roundX = (x + 0.5) | 0;
+ roundY = (y + 0.5) | 0;
+ if (d == dd - 2 || roundX !== prevX || roundY !== prevY) {
+ context.lineTo(x, y);
+ prevX = roundX;
+ prevY = roundY;
+ }
+ }
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.SET_FILL_STYLE:
+ goog.asserts.assert(
+ ol.colorlike.isColorLike(instruction[1]),
+ '2nd instruction should be a string, ' +
+ 'CanvasPattern, or CanvasGradient');
+ context.fillStyle = /** @type {ol.ColorLike} */ (instruction[1]);
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.SET_STROKE_STYLE:
+ goog.asserts.assert(typeof instruction[1] === 'string',
+ '2nd instruction should be a string');
+ goog.asserts.assert(goog.isNumber(instruction[2]),
+ '3rd instruction should be a number');
+ goog.asserts.assert(typeof instruction[3] === 'string',
+ '4rd instruction should be a string');
+ goog.asserts.assert(typeof instruction[4] === 'string',
+ '5th instruction should be a string');
+ goog.asserts.assert(goog.isNumber(instruction[5]),
+ '6th instruction should be a number');
+ goog.asserts.assert(instruction[6],
+ '7th instruction should not be null');
+ var usePixelRatio = instruction[7] !== undefined ?
+ instruction[7] : true;
+ var lineWidth = /** @type {number} */ (instruction[2]);
+ context.strokeStyle = /** @type {string} */ (instruction[1]);
+ context.lineWidth = usePixelRatio ? lineWidth * pixelRatio : lineWidth;
+ context.lineCap = /** @type {string} */ (instruction[3]);
+ context.lineJoin = /** @type {string} */ (instruction[4]);
+ context.miterLimit = /** @type {number} */ (instruction[5]);
+ if (ol.has.CANVAS_LINE_DASH) {
+ context.setLineDash(/** @type {Array.<number>} */ (instruction[6]));
+ }
+ prevX = NaN;
+ prevY = NaN;
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.SET_TEXT_STYLE:
+ goog.asserts.assert(typeof instruction[1] === 'string',
+ '2nd instruction should be a string');
+ goog.asserts.assert(typeof instruction[2] === 'string',
+ '3rd instruction should be a string');
+ goog.asserts.assert(typeof instruction[3] === 'string',
+ '4th instruction should be a string');
+ context.font = /** @type {string} */ (instruction[1]);
+ context.textAlign = /** @type {string} */ (instruction[2]);
+ context.textBaseline = /** @type {string} */ (instruction[3]);
+ ++i;
+ break;
+ case ol.render.canvas.Instruction.STROKE:
+ context.stroke();
+ ++i;
+ break;
+ default:
+ goog.asserts.fail('Unknown canvas render instruction');
+ ++i; // consume the instruction anyway, to avoid an infinite loop
+ break;
+ }
+ }
+ // assert that all instructions were consumed
+ goog.asserts.assert(i == instructions.length,
+ 'all instructions should be consumed');
+ return undefined;
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ */
+ol.render.canvas.Replay.prototype.replay = function(
+ context, pixelRatio, transform, viewRotation, skippedFeaturesHash) {
+ var instructions = this.instructions;
+ this.replay_(context, pixelRatio, transform, viewRotation,
+ skippedFeaturesHash, instructions, undefined);
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T=} opt_featureCallback
+ * Feature callback.
+ * @param {ol.Extent=} opt_hitExtent Only check features that intersect this
+ * extent.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.canvas.Replay.prototype.replayHitDetection = function(
+ context, transform, viewRotation, skippedFeaturesHash,
+ opt_featureCallback, opt_hitExtent) {
+ var instructions = this.hitDetectionInstructions;
+ return this.replay_(context, 1, transform, viewRotation,
+ skippedFeaturesHash, instructions, opt_featureCallback, opt_hitExtent);
+};
+
+
+/**
+ * @private
+ */
+ol.render.canvas.Replay.prototype.reverseHitDetectionInstructions_ = function() {
+ var hitDetectionInstructions = this.hitDetectionInstructions;
+ // step 1 - reverse array
+ hitDetectionInstructions.reverse();
+ // step 2 - reverse instructions within geometry blocks
+ var i;
+ var n = hitDetectionInstructions.length;
+ var instruction;
+ var type;
+ var begin = -1;
+ for (i = 0; i < n; ++i) {
+ instruction = hitDetectionInstructions[i];
+ type = /** @type {ol.render.canvas.Instruction} */ (instruction[0]);
+ if (type == ol.render.canvas.Instruction.END_GEOMETRY) {
+ goog.asserts.assert(begin == -1, 'begin should be -1');
+ begin = i;
+ } else if (type == ol.render.canvas.Instruction.BEGIN_GEOMETRY) {
+ instruction[2] = i;
+ goog.asserts.assert(begin >= 0,
+ 'begin should be larger than or equal to 0');
+ ol.array.reverseSubArray(this.hitDetectionInstructions, begin, i);
+ begin = -1;
+ }
+ }
+};
+
+
+/**
+ * @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ */
+ol.render.canvas.Replay.prototype.endGeometry = function(geometry, feature) {
+ goog.asserts.assert(this.beginGeometryInstruction1_,
+ 'this.beginGeometryInstruction1_ should not be null');
+ this.beginGeometryInstruction1_[2] = this.instructions.length;
+ this.beginGeometryInstruction1_ = null;
+ goog.asserts.assert(this.beginGeometryInstruction2_,
+ 'this.beginGeometryInstruction2_ should not be null');
+ this.beginGeometryInstruction2_[2] = this.hitDetectionInstructions.length;
+ this.beginGeometryInstruction2_ = null;
+ var endGeometryInstruction =
+ [ol.render.canvas.Instruction.END_GEOMETRY, feature];
+ this.instructions.push(endGeometryInstruction);
+ this.hitDetectionInstructions.push(endGeometryInstruction);
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.render.canvas.Replay.prototype.finish = ol.nullFunction;
+
+
+/**
+ * Get the buffered rendering extent. Rendering will be clipped to the extent
+ * provided to the constructor. To account for symbolizers that may intersect
+ * this extent, we calculate a buffered extent (e.g. based on stroke width).
+ * @return {ol.Extent} The buffered rendering extent.
+ * @protected
+ */
+ol.render.canvas.Replay.prototype.getBufferedMaxExtent = function() {
+ return this.maxExtent;
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.render.canvas.Replay}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Maximum extent.
+ * @param {number} resolution Resolution.
+ * @protected
+ * @struct
+ */
+ol.render.canvas.ImageReplay = function(tolerance, maxExtent, resolution) {
+ ol.render.canvas.Replay.call(this, tolerance, maxExtent, resolution);
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement|HTMLVideoElement|Image}
+ */
+ this.hitDetectionImage_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement|HTMLVideoElement|Image}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.anchorX_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.anchorY_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.height_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.opacity_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.originX_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.originY_ = undefined;
+
+ /**
+ * @private
+ * @type {boolean|undefined}
+ */
+ this.rotateWithView_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.rotation_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.scale_ = undefined;
+
+ /**
+ * @private
+ * @type {boolean|undefined}
+ */
+ this.snapToPixel_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.width_ = undefined;
+
+};
+ol.inherits(ol.render.canvas.ImageReplay, ol.render.canvas.Replay);
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @private
+ * @return {number} My end.
+ */
+ol.render.canvas.ImageReplay.prototype.drawCoordinates_ = function(flatCoordinates, offset, end, stride) {
+ return this.appendFlatCoordinates(
+ flatCoordinates, offset, end, stride, false);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ImageReplay.prototype.drawPoint = function(pointGeometry, feature) {
+ if (!this.image_) {
+ return;
+ }
+ goog.asserts.assert(this.anchorX_ !== undefined,
+ 'this.anchorX_ should be defined');
+ goog.asserts.assert(this.anchorY_ !== undefined,
+ 'this.anchorY_ should be defined');
+ goog.asserts.assert(this.height_ !== undefined,
+ 'this.height_ should be defined');
+ goog.asserts.assert(this.opacity_ !== undefined,
+ 'this.opacity_ should be defined');
+ goog.asserts.assert(this.originX_ !== undefined,
+ 'this.originX_ should be defined');
+ goog.asserts.assert(this.originY_ !== undefined,
+ 'this.originY_ should be defined');
+ goog.asserts.assert(this.rotateWithView_ !== undefined,
+ 'this.rotateWithView_ should be defined');
+ goog.asserts.assert(this.rotation_ !== undefined,
+ 'this.rotation_ should be defined');
+ goog.asserts.assert(this.scale_ !== undefined,
+ 'this.scale_ should be defined');
+ goog.asserts.assert(this.width_ !== undefined,
+ 'this.width_ should be defined');
+ this.beginGeometry(pointGeometry, feature);
+ var flatCoordinates = pointGeometry.getFlatCoordinates();
+ var stride = pointGeometry.getStride();
+ var myBegin = this.coordinates.length;
+ var myEnd = this.drawCoordinates_(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+ this.instructions.push([
+ ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd, this.image_,
+ // Remaining arguments to DRAW_IMAGE are in alphabetical order
+ this.anchorX_, this.anchorY_, this.height_, this.opacity_,
+ this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
+ this.scale_, this.snapToPixel_, this.width_
+ ]);
+ this.hitDetectionInstructions.push([
+ ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd,
+ this.hitDetectionImage_,
+ // Remaining arguments to DRAW_IMAGE are in alphabetical order
+ this.anchorX_, this.anchorY_, this.height_, this.opacity_,
+ this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
+ this.scale_, this.snapToPixel_, this.width_
+ ]);
+ this.endGeometry(pointGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ImageReplay.prototype.drawMultiPoint = function(multiPointGeometry, feature) {
+ if (!this.image_) {
+ return;
+ }
+ goog.asserts.assert(this.anchorX_ !== undefined,
+ 'this.anchorX_ should be defined');
+ goog.asserts.assert(this.anchorY_ !== undefined,
+ 'this.anchorY_ should be defined');
+ goog.asserts.assert(this.height_ !== undefined,
+ 'this.height_ should be defined');
+ goog.asserts.assert(this.opacity_ !== undefined,
+ 'this.opacity_ should be defined');
+ goog.asserts.assert(this.originX_ !== undefined,
+ 'this.originX_ should be defined');
+ goog.asserts.assert(this.originY_ !== undefined,
+ 'this.originY_ should be defined');
+ goog.asserts.assert(this.rotateWithView_ !== undefined,
+ 'this.rotateWithView_ should be defined');
+ goog.asserts.assert(this.rotation_ !== undefined,
+ 'this.rotation_ should be defined');
+ goog.asserts.assert(this.scale_ !== undefined,
+ 'this.scale_ should be defined');
+ goog.asserts.assert(this.width_ !== undefined,
+ 'this.width_ should be defined');
+ this.beginGeometry(multiPointGeometry, feature);
+ var flatCoordinates = multiPointGeometry.getFlatCoordinates();
+ var stride = multiPointGeometry.getStride();
+ var myBegin = this.coordinates.length;
+ var myEnd = this.drawCoordinates_(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+ this.instructions.push([
+ ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd, this.image_,
+ // Remaining arguments to DRAW_IMAGE are in alphabetical order
+ this.anchorX_, this.anchorY_, this.height_, this.opacity_,
+ this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
+ this.scale_, this.snapToPixel_, this.width_
+ ]);
+ this.hitDetectionInstructions.push([
+ ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd,
+ this.hitDetectionImage_,
+ // Remaining arguments to DRAW_IMAGE are in alphabetical order
+ this.anchorX_, this.anchorY_, this.height_, this.opacity_,
+ this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
+ this.scale_, this.snapToPixel_, this.width_
+ ]);
+ this.endGeometry(multiPointGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ImageReplay.prototype.finish = function() {
+ this.reverseHitDetectionInstructions_();
+ // FIXME this doesn't really protect us against further calls to draw*Geometry
+ this.anchorX_ = undefined;
+ this.anchorY_ = undefined;
+ this.hitDetectionImage_ = null;
+ this.image_ = null;
+ this.height_ = undefined;
+ this.scale_ = undefined;
+ this.opacity_ = undefined;
+ this.originX_ = undefined;
+ this.originY_ = undefined;
+ this.rotateWithView_ = undefined;
+ this.rotation_ = undefined;
+ this.snapToPixel_ = undefined;
+ this.width_ = undefined;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ImageReplay.prototype.setImageStyle = function(imageStyle) {
+ goog.asserts.assert(imageStyle, 'imageStyle should not be null');
+ var anchor = imageStyle.getAnchor();
+ goog.asserts.assert(anchor, 'anchor should not be null');
+ var size = imageStyle.getSize();
+ goog.asserts.assert(size, 'size should not be null');
+ var hitDetectionImage = imageStyle.getHitDetectionImage(1);
+ goog.asserts.assert(hitDetectionImage,
+ 'hitDetectionImage should not be null');
+ var image = imageStyle.getImage(1);
+ goog.asserts.assert(image, 'image should not be null');
+ var origin = imageStyle.getOrigin();
+ goog.asserts.assert(origin, 'origin should not be null');
+ this.anchorX_ = anchor[0];
+ this.anchorY_ = anchor[1];
+ this.hitDetectionImage_ = hitDetectionImage;
+ this.image_ = image;
+ this.height_ = size[1];
+ this.opacity_ = imageStyle.getOpacity();
+ this.originX_ = origin[0];
+ this.originY_ = origin[1];
+ this.rotateWithView_ = imageStyle.getRotateWithView();
+ this.rotation_ = imageStyle.getRotation();
+ this.scale_ = imageStyle.getScale();
+ this.snapToPixel_ = imageStyle.getSnapToPixel();
+ this.width_ = size[0];
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.render.canvas.Replay}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Maximum extent.
+ * @param {number} resolution Resolution.
+ * @protected
+ * @struct
+ */
+ol.render.canvas.LineStringReplay = function(tolerance, maxExtent, resolution) {
+
+ ol.render.canvas.Replay.call(this, tolerance, maxExtent, resolution);
+
+ /**
+ * @private
+ * @type {{currentStrokeStyle: (string|undefined),
+ * currentLineCap: (string|undefined),
+ * currentLineDash: Array.<number>,
+ * currentLineJoin: (string|undefined),
+ * currentLineWidth: (number|undefined),
+ * currentMiterLimit: (number|undefined),
+ * lastStroke: number,
+ * strokeStyle: (string|undefined),
+ * lineCap: (string|undefined),
+ * lineDash: Array.<number>,
+ * lineJoin: (string|undefined),
+ * lineWidth: (number|undefined),
+ * miterLimit: (number|undefined)}|null}
+ */
+ this.state_ = {
+ currentStrokeStyle: undefined,
+ currentLineCap: undefined,
+ currentLineDash: null,
+ currentLineJoin: undefined,
+ currentLineWidth: undefined,
+ currentMiterLimit: undefined,
+ lastStroke: 0,
+ strokeStyle: undefined,
+ lineCap: undefined,
+ lineDash: null,
+ lineJoin: undefined,
+ lineWidth: undefined,
+ miterLimit: undefined
+ };
+
+};
+ol.inherits(ol.render.canvas.LineStringReplay, ol.render.canvas.Replay);
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @private
+ * @return {number} end.
+ */
+ol.render.canvas.LineStringReplay.prototype.drawFlatCoordinates_ = function(flatCoordinates, offset, end, stride) {
+ var myBegin = this.coordinates.length;
+ var myEnd = this.appendFlatCoordinates(
+ flatCoordinates, offset, end, stride, false);
+ var moveToLineToInstruction =
+ [ol.render.canvas.Instruction.MOVE_TO_LINE_TO, myBegin, myEnd];
+ this.instructions.push(moveToLineToInstruction);
+ this.hitDetectionInstructions.push(moveToLineToInstruction);
+ return end;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.LineStringReplay.prototype.getBufferedMaxExtent = function() {
+ if (!this.bufferedMaxExtent_) {
+ this.bufferedMaxExtent_ = ol.extent.clone(this.maxExtent);
+ if (this.maxLineWidth > 0) {
+ var width = this.resolution * (this.maxLineWidth + 1) / 2;
+ ol.extent.buffer(this.bufferedMaxExtent_, width, this.bufferedMaxExtent_);
+ }
+ }
+ return this.bufferedMaxExtent_;
+};
+
+
+/**
+ * @private
+ */
+ol.render.canvas.LineStringReplay.prototype.setStrokeStyle_ = function() {
+ var state = this.state_;
+ var strokeStyle = state.strokeStyle;
+ var lineCap = state.lineCap;
+ var lineDash = state.lineDash;
+ var lineJoin = state.lineJoin;
+ var lineWidth = state.lineWidth;
+ var miterLimit = state.miterLimit;
+ goog.asserts.assert(strokeStyle !== undefined,
+ 'strokeStyle should be defined');
+ goog.asserts.assert(lineCap !== undefined, 'lineCap should be defined');
+ goog.asserts.assert(lineDash, 'lineDash should not be null');
+ goog.asserts.assert(lineJoin !== undefined, 'lineJoin should be defined');
+ goog.asserts.assert(lineWidth !== undefined, 'lineWidth should be defined');
+ goog.asserts.assert(miterLimit !== undefined, 'miterLimit should be defined');
+ if (state.currentStrokeStyle != strokeStyle ||
+ state.currentLineCap != lineCap ||
+ !ol.array.equals(state.currentLineDash, lineDash) ||
+ state.currentLineJoin != lineJoin ||
+ state.currentLineWidth != lineWidth ||
+ state.currentMiterLimit != miterLimit) {
+ if (state.lastStroke != this.coordinates.length) {
+ this.instructions.push(
+ [ol.render.canvas.Instruction.STROKE]);
+ state.lastStroke = this.coordinates.length;
+ }
+ this.instructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ strokeStyle, lineWidth, lineCap, lineJoin, miterLimit, lineDash],
+ [ol.render.canvas.Instruction.BEGIN_PATH]);
+ state.currentStrokeStyle = strokeStyle;
+ state.currentLineCap = lineCap;
+ state.currentLineDash = lineDash;
+ state.currentLineJoin = lineJoin;
+ state.currentLineWidth = lineWidth;
+ state.currentMiterLimit = miterLimit;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.LineStringReplay.prototype.drawLineString = function(lineStringGeometry, feature) {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ var strokeStyle = state.strokeStyle;
+ var lineWidth = state.lineWidth;
+ if (strokeStyle === undefined || lineWidth === undefined) {
+ return;
+ }
+ this.setStrokeStyle_();
+ this.beginGeometry(lineStringGeometry, feature);
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
+ state.miterLimit, state.lineDash],
+ [ol.render.canvas.Instruction.BEGIN_PATH]);
+ var flatCoordinates = lineStringGeometry.getFlatCoordinates();
+ var stride = lineStringGeometry.getStride();
+ this.drawFlatCoordinates_(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+ this.hitDetectionInstructions.push([ol.render.canvas.Instruction.STROKE]);
+ this.endGeometry(lineStringGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.LineStringReplay.prototype.drawMultiLineString = function(multiLineStringGeometry, feature) {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ var strokeStyle = state.strokeStyle;
+ var lineWidth = state.lineWidth;
+ if (strokeStyle === undefined || lineWidth === undefined) {
+ return;
+ }
+ this.setStrokeStyle_();
+ this.beginGeometry(multiLineStringGeometry, feature);
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
+ state.miterLimit, state.lineDash],
+ [ol.render.canvas.Instruction.BEGIN_PATH]);
+ var ends = multiLineStringGeometry.getEnds();
+ var flatCoordinates = multiLineStringGeometry.getFlatCoordinates();
+ var stride = multiLineStringGeometry.getStride();
+ var offset = 0;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ offset = this.drawFlatCoordinates_(
+ flatCoordinates, offset, ends[i], stride);
+ }
+ this.hitDetectionInstructions.push([ol.render.canvas.Instruction.STROKE]);
+ this.endGeometry(multiLineStringGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.LineStringReplay.prototype.finish = function() {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ if (state.lastStroke != this.coordinates.length) {
+ this.instructions.push([ol.render.canvas.Instruction.STROKE]);
+ }
+ this.reverseHitDetectionInstructions_();
+ this.state_ = null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.LineStringReplay.prototype.setFillStrokeStyle = function(fillStyle, strokeStyle) {
+ goog.asserts.assert(this.state_, 'this.state_ should not be null');
+ goog.asserts.assert(!fillStyle, 'fillStyle should be null');
+ goog.asserts.assert(strokeStyle, 'strokeStyle should not be null');
+ var strokeStyleColor = strokeStyle.getColor();
+ this.state_.strokeStyle = ol.color.asString(strokeStyleColor ?
+ strokeStyleColor : ol.render.canvas.defaultStrokeStyle);
+ var strokeStyleLineCap = strokeStyle.getLineCap();
+ this.state_.lineCap = strokeStyleLineCap !== undefined ?
+ strokeStyleLineCap : ol.render.canvas.defaultLineCap;
+ var strokeStyleLineDash = strokeStyle.getLineDash();
+ this.state_.lineDash = strokeStyleLineDash ?
+ strokeStyleLineDash : ol.render.canvas.defaultLineDash;
+ var strokeStyleLineJoin = strokeStyle.getLineJoin();
+ this.state_.lineJoin = strokeStyleLineJoin !== undefined ?
+ strokeStyleLineJoin : ol.render.canvas.defaultLineJoin;
+ var strokeStyleWidth = strokeStyle.getWidth();
+ this.state_.lineWidth = strokeStyleWidth !== undefined ?
+ strokeStyleWidth : ol.render.canvas.defaultLineWidth;
+ var strokeStyleMiterLimit = strokeStyle.getMiterLimit();
+ this.state_.miterLimit = strokeStyleMiterLimit !== undefined ?
+ strokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit;
+
+ if (this.state_.lineWidth > this.maxLineWidth) {
+ this.maxLineWidth = this.state_.lineWidth;
+ // invalidate the buffered max extent cache
+ this.bufferedMaxExtent_ = null;
+ }
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.render.canvas.Replay}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Maximum extent.
+ * @param {number} resolution Resolution.
+ * @protected
+ * @struct
+ */
+ol.render.canvas.PolygonReplay = function(tolerance, maxExtent, resolution) {
+
+ ol.render.canvas.Replay.call(this, tolerance, maxExtent, resolution);
+
+ /**
+ * @private
+ * @type {{currentFillStyle: (ol.ColorLike|undefined),
+ * currentStrokeStyle: (string|undefined),
+ * currentLineCap: (string|undefined),
+ * currentLineDash: Array.<number>,
+ * currentLineJoin: (string|undefined),
+ * currentLineWidth: (number|undefined),
+ * currentMiterLimit: (number|undefined),
+ * fillStyle: (ol.ColorLike|undefined),
+ * strokeStyle: (string|undefined),
+ * lineCap: (string|undefined),
+ * lineDash: Array.<number>,
+ * lineJoin: (string|undefined),
+ * lineWidth: (number|undefined),
+ * miterLimit: (number|undefined)}|null}
+ */
+ this.state_ = {
+ currentFillStyle: undefined,
+ currentStrokeStyle: undefined,
+ currentLineCap: undefined,
+ currentLineDash: null,
+ currentLineJoin: undefined,
+ currentLineWidth: undefined,
+ currentMiterLimit: undefined,
+ fillStyle: undefined,
+ strokeStyle: undefined,
+ lineCap: undefined,
+ lineDash: null,
+ lineJoin: undefined,
+ lineWidth: undefined,
+ miterLimit: undefined
+ };
+
+};
+ol.inherits(ol.render.canvas.PolygonReplay, ol.render.canvas.Replay);
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @private
+ * @return {number} End.
+ */
+ol.render.canvas.PolygonReplay.prototype.drawFlatCoordinatess_ = function(flatCoordinates, offset, ends, stride) {
+ var state = this.state_;
+ var beginPathInstruction = [ol.render.canvas.Instruction.BEGIN_PATH];
+ this.instructions.push(beginPathInstruction);
+ this.hitDetectionInstructions.push(beginPathInstruction);
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var myBegin = this.coordinates.length;
+ var myEnd = this.appendFlatCoordinates(
+ flatCoordinates, offset, end, stride, true);
+ var moveToLineToInstruction =
+ [ol.render.canvas.Instruction.MOVE_TO_LINE_TO, myBegin, myEnd];
+ var closePathInstruction = [ol.render.canvas.Instruction.CLOSE_PATH];
+ this.instructions.push(moveToLineToInstruction, closePathInstruction);
+ this.hitDetectionInstructions.push(moveToLineToInstruction,
+ closePathInstruction);
+ offset = end;
+ }
+ // FIXME is it quicker to fill and stroke each polygon individually,
+ // FIXME or all polygons together?
+ var fillInstruction = [ol.render.canvas.Instruction.FILL];
+ this.hitDetectionInstructions.push(fillInstruction);
+ if (state.fillStyle !== undefined) {
+ this.instructions.push(fillInstruction);
+ }
+ if (state.strokeStyle !== undefined) {
+ goog.asserts.assert(state.lineWidth !== undefined,
+ 'state.lineWidth should be defined');
+ var strokeInstruction = [ol.render.canvas.Instruction.STROKE];
+ this.instructions.push(strokeInstruction);
+ this.hitDetectionInstructions.push(strokeInstruction);
+ }
+ return offset;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.drawCircle = function(circleGeometry, feature) {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ var fillStyle = state.fillStyle;
+ var strokeStyle = state.strokeStyle;
+ if (fillStyle === undefined && strokeStyle === undefined) {
+ return;
+ }
+ if (strokeStyle !== undefined) {
+ goog.asserts.assert(state.lineWidth !== undefined,
+ 'state.lineWidth should be defined');
+ }
+ this.setFillStrokeStyles_();
+ this.beginGeometry(circleGeometry, feature);
+ // always fill the circle for hit detection
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_FILL_STYLE,
+ ol.color.asString(ol.render.canvas.defaultFillStyle)]);
+ if (state.strokeStyle !== undefined) {
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
+ state.miterLimit, state.lineDash]);
+ }
+ var flatCoordinates = circleGeometry.getFlatCoordinates();
+ var stride = circleGeometry.getStride();
+ var myBegin = this.coordinates.length;
+ this.appendFlatCoordinates(
+ flatCoordinates, 0, flatCoordinates.length, stride, false);
+ var beginPathInstruction = [ol.render.canvas.Instruction.BEGIN_PATH];
+ var circleInstruction = [ol.render.canvas.Instruction.CIRCLE, myBegin];
+ this.instructions.push(beginPathInstruction, circleInstruction);
+ this.hitDetectionInstructions.push(beginPathInstruction, circleInstruction);
+ var fillInstruction = [ol.render.canvas.Instruction.FILL];
+ this.hitDetectionInstructions.push(fillInstruction);
+ if (state.fillStyle !== undefined) {
+ this.instructions.push(fillInstruction);
+ }
+ if (state.strokeStyle !== undefined) {
+ goog.asserts.assert(state.lineWidth !== undefined,
+ 'state.lineWidth should be defined');
+ var strokeInstruction = [ol.render.canvas.Instruction.STROKE];
+ this.instructions.push(strokeInstruction);
+ this.hitDetectionInstructions.push(strokeInstruction);
+ }
+ this.endGeometry(circleGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.drawPolygon = function(polygonGeometry, feature) {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ var fillStyle = state.fillStyle;
+ var strokeStyle = state.strokeStyle;
+ if (fillStyle === undefined && strokeStyle === undefined) {
+ return;
+ }
+ if (strokeStyle !== undefined) {
+ goog.asserts.assert(state.lineWidth !== undefined,
+ 'state.lineWidth should be defined');
+ }
+ this.setFillStrokeStyles_();
+ this.beginGeometry(polygonGeometry, feature);
+ // always fill the polygon for hit detection
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_FILL_STYLE,
+ ol.color.asString(ol.render.canvas.defaultFillStyle)]);
+ if (state.strokeStyle !== undefined) {
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
+ state.miterLimit, state.lineDash]);
+ }
+ var ends = polygonGeometry.getEnds();
+ var flatCoordinates = polygonGeometry.getOrientedFlatCoordinates();
+ var stride = polygonGeometry.getStride();
+ this.drawFlatCoordinatess_(flatCoordinates, 0, ends, stride);
+ this.endGeometry(polygonGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.drawMultiPolygon = function(multiPolygonGeometry, feature) {
+ var state = this.state_;
+ goog.asserts.assert(state, 'state should not be null');
+ var fillStyle = state.fillStyle;
+ var strokeStyle = state.strokeStyle;
+ if (fillStyle === undefined && strokeStyle === undefined) {
+ return;
+ }
+ if (strokeStyle !== undefined) {
+ goog.asserts.assert(state.lineWidth !== undefined,
+ 'state.lineWidth should be defined');
+ }
+ this.setFillStrokeStyles_();
+ this.beginGeometry(multiPolygonGeometry, feature);
+ // always fill the multi-polygon for hit detection
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_FILL_STYLE,
+ ol.color.asString(ol.render.canvas.defaultFillStyle)]);
+ if (state.strokeStyle !== undefined) {
+ this.hitDetectionInstructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
+ state.miterLimit, state.lineDash]);
+ }
+ var endss = multiPolygonGeometry.getEndss();
+ var flatCoordinates = multiPolygonGeometry.getOrientedFlatCoordinates();
+ var stride = multiPolygonGeometry.getStride();
+ var offset = 0;
+ var i, ii;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ offset = this.drawFlatCoordinatess_(
+ flatCoordinates, offset, endss[i], stride);
+ }
+ this.endGeometry(multiPolygonGeometry, feature);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.finish = function() {
+ goog.asserts.assert(this.state_, 'this.state_ should not be null');
+ this.reverseHitDetectionInstructions_();
+ this.state_ = null;
+ // We want to preserve topology when drawing polygons. Polygons are
+ // simplified using quantization and point elimination. However, we might
+ // have received a mix of quantized and non-quantized geometries, so ensure
+ // that all are quantized by quantizing all coordinates in the batch.
+ var tolerance = this.tolerance;
+ if (tolerance !== 0) {
+ var coordinates = this.coordinates;
+ var i, ii;
+ for (i = 0, ii = coordinates.length; i < ii; ++i) {
+ coordinates[i] = ol.geom.flat.simplify.snap(coordinates[i], tolerance);
+ }
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.getBufferedMaxExtent = function() {
+ if (!this.bufferedMaxExtent_) {
+ this.bufferedMaxExtent_ = ol.extent.clone(this.maxExtent);
+ if (this.maxLineWidth > 0) {
+ var width = this.resolution * (this.maxLineWidth + 1) / 2;
+ ol.extent.buffer(this.bufferedMaxExtent_, width, this.bufferedMaxExtent_);
+ }
+ }
+ return this.bufferedMaxExtent_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.PolygonReplay.prototype.setFillStrokeStyle = function(fillStyle, strokeStyle) {
+ goog.asserts.assert(this.state_, 'this.state_ should not be null');
+ goog.asserts.assert(fillStyle || strokeStyle,
+ 'fillStyle or strokeStyle should not be null');
+ var state = this.state_;
+ if (fillStyle) {
+ var fillStyleColor = fillStyle.getColor();
+ state.fillStyle = ol.colorlike.asColorLike(fillStyleColor ?
+ fillStyleColor : ol.render.canvas.defaultFillStyle);
+ } else {
+ state.fillStyle = undefined;
+ }
+ if (strokeStyle) {
+ var strokeStyleColor = strokeStyle.getColor();
+ state.strokeStyle = ol.color.asString(strokeStyleColor ?
+ strokeStyleColor : ol.render.canvas.defaultStrokeStyle);
+ var strokeStyleLineCap = strokeStyle.getLineCap();
+ state.lineCap = strokeStyleLineCap !== undefined ?
+ strokeStyleLineCap : ol.render.canvas.defaultLineCap;
+ var strokeStyleLineDash = strokeStyle.getLineDash();
+ state.lineDash = strokeStyleLineDash ?
+ strokeStyleLineDash.slice() : ol.render.canvas.defaultLineDash;
+ var strokeStyleLineJoin = strokeStyle.getLineJoin();
+ state.lineJoin = strokeStyleLineJoin !== undefined ?
+ strokeStyleLineJoin : ol.render.canvas.defaultLineJoin;
+ var strokeStyleWidth = strokeStyle.getWidth();
+ state.lineWidth = strokeStyleWidth !== undefined ?
+ strokeStyleWidth : ol.render.canvas.defaultLineWidth;
+ var strokeStyleMiterLimit = strokeStyle.getMiterLimit();
+ state.miterLimit = strokeStyleMiterLimit !== undefined ?
+ strokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit;
+
+ if (state.lineWidth > this.maxLineWidth) {
+ this.maxLineWidth = state.lineWidth;
+ // invalidate the buffered max extent cache
+ this.bufferedMaxExtent_ = null;
+ }
+ } else {
+ state.strokeStyle = undefined;
+ state.lineCap = undefined;
+ state.lineDash = null;
+ state.lineJoin = undefined;
+ state.lineWidth = undefined;
+ state.miterLimit = undefined;
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.render.canvas.PolygonReplay.prototype.setFillStrokeStyles_ = function() {
+ var state = this.state_;
+ var fillStyle = state.fillStyle;
+ var strokeStyle = state.strokeStyle;
+ var lineCap = state.lineCap;
+ var lineDash = state.lineDash;
+ var lineJoin = state.lineJoin;
+ var lineWidth = state.lineWidth;
+ var miterLimit = state.miterLimit;
+ if (fillStyle !== undefined && state.currentFillStyle != fillStyle) {
+ this.instructions.push(
+ [ol.render.canvas.Instruction.SET_FILL_STYLE, fillStyle]);
+ state.currentFillStyle = state.fillStyle;
+ }
+ if (strokeStyle !== undefined) {
+ goog.asserts.assert(lineCap !== undefined, 'lineCap should be defined');
+ goog.asserts.assert(lineDash, 'lineDash should not be null');
+ goog.asserts.assert(lineJoin !== undefined, 'lineJoin should be defined');
+ goog.asserts.assert(lineWidth !== undefined, 'lineWidth should be defined');
+ goog.asserts.assert(miterLimit !== undefined,
+ 'miterLimit should be defined');
+ if (state.currentStrokeStyle != strokeStyle ||
+ state.currentLineCap != lineCap ||
+ state.currentLineDash != lineDash ||
+ state.currentLineJoin != lineJoin ||
+ state.currentLineWidth != lineWidth ||
+ state.currentMiterLimit != miterLimit) {
+ this.instructions.push(
+ [ol.render.canvas.Instruction.SET_STROKE_STYLE,
+ strokeStyle, lineWidth, lineCap, lineJoin, miterLimit, lineDash]);
+ state.currentStrokeStyle = strokeStyle;
+ state.currentLineCap = lineCap;
+ state.currentLineDash = lineDash;
+ state.currentLineJoin = lineJoin;
+ state.currentLineWidth = lineWidth;
+ state.currentMiterLimit = miterLimit;
+ }
+ }
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.render.canvas.Replay}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Maximum extent.
+ * @param {number} resolution Resolution.
+ * @protected
+ * @struct
+ */
+ol.render.canvas.TextReplay = function(tolerance, maxExtent, resolution) {
+
+ ol.render.canvas.Replay.call(this, tolerance, maxExtent, resolution);
+
+ /**
+ * @private
+ * @type {?ol.CanvasFillState}
+ */
+ this.replayFillState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasStrokeState}
+ */
+ this.replayStrokeState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasTextState}
+ */
+ this.replayTextState_ = null;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.text_ = '';
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textOffsetX_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textOffsetY_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textRotation_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textScale_ = 0;
+
+ /**
+ * @private
+ * @type {?ol.CanvasFillState}
+ */
+ this.textFillState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasStrokeState}
+ */
+ this.textStrokeState_ = null;
+
+ /**
+ * @private
+ * @type {?ol.CanvasTextState}
+ */
+ this.textState_ = null;
+
+};
+ol.inherits(ol.render.canvas.TextReplay, ol.render.canvas.Replay);
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.TextReplay.prototype.drawText = function(flatCoordinates, offset, end, stride, geometry, feature) {
+ if (this.text_ === '' || !this.textState_ ||
+ (!this.textFillState_ && !this.textStrokeState_)) {
+ return;
+ }
+ if (this.textFillState_) {
+ this.setReplayFillState_(this.textFillState_);
+ }
+ if (this.textStrokeState_) {
+ this.setReplayStrokeState_(this.textStrokeState_);
+ }
+ this.setReplayTextState_(this.textState_);
+ this.beginGeometry(geometry, feature);
+ var myBegin = this.coordinates.length;
+ var myEnd =
+ this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false);
+ var fill = !!this.textFillState_;
+ var stroke = !!this.textStrokeState_;
+ var drawTextInstruction = [
+ ol.render.canvas.Instruction.DRAW_TEXT, myBegin, myEnd, this.text_,
+ this.textOffsetX_, this.textOffsetY_, this.textRotation_, this.textScale_,
+ fill, stroke];
+ this.instructions.push(drawTextInstruction);
+ this.hitDetectionInstructions.push(drawTextInstruction);
+ this.endGeometry(geometry, feature);
+};
+
+
+/**
+ * @param {ol.CanvasFillState} fillState Fill state.
+ * @private
+ */
+ol.render.canvas.TextReplay.prototype.setReplayFillState_ = function(fillState) {
+ var replayFillState = this.replayFillState_;
+ if (replayFillState &&
+ replayFillState.fillStyle == fillState.fillStyle) {
+ return;
+ }
+ var setFillStyleInstruction =
+ [ol.render.canvas.Instruction.SET_FILL_STYLE, fillState.fillStyle];
+ this.instructions.push(setFillStyleInstruction);
+ this.hitDetectionInstructions.push(setFillStyleInstruction);
+ if (!replayFillState) {
+ this.replayFillState_ = {
+ fillStyle: fillState.fillStyle
+ };
+ } else {
+ replayFillState.fillStyle = fillState.fillStyle;
+ }
+};
+
+
+/**
+ * @param {ol.CanvasStrokeState} strokeState Stroke state.
+ * @private
+ */
+ol.render.canvas.TextReplay.prototype.setReplayStrokeState_ = function(strokeState) {
+ var replayStrokeState = this.replayStrokeState_;
+ if (replayStrokeState &&
+ replayStrokeState.lineCap == strokeState.lineCap &&
+ replayStrokeState.lineDash == strokeState.lineDash &&
+ replayStrokeState.lineJoin == strokeState.lineJoin &&
+ replayStrokeState.lineWidth == strokeState.lineWidth &&
+ replayStrokeState.miterLimit == strokeState.miterLimit &&
+ replayStrokeState.strokeStyle == strokeState.strokeStyle) {
+ return;
+ }
+ var setStrokeStyleInstruction = [
+ ol.render.canvas.Instruction.SET_STROKE_STYLE, strokeState.strokeStyle,
+ strokeState.lineWidth, strokeState.lineCap, strokeState.lineJoin,
+ strokeState.miterLimit, strokeState.lineDash, false
+ ];
+ this.instructions.push(setStrokeStyleInstruction);
+ this.hitDetectionInstructions.push(setStrokeStyleInstruction);
+ if (!replayStrokeState) {
+ this.replayStrokeState_ = {
+ lineCap: strokeState.lineCap,
+ lineDash: strokeState.lineDash,
+ lineJoin: strokeState.lineJoin,
+ lineWidth: strokeState.lineWidth,
+ miterLimit: strokeState.miterLimit,
+ strokeStyle: strokeState.strokeStyle
+ };
+ } else {
+ replayStrokeState.lineCap = strokeState.lineCap;
+ replayStrokeState.lineDash = strokeState.lineDash;
+ replayStrokeState.lineJoin = strokeState.lineJoin;
+ replayStrokeState.lineWidth = strokeState.lineWidth;
+ replayStrokeState.miterLimit = strokeState.miterLimit;
+ replayStrokeState.strokeStyle = strokeState.strokeStyle;
+ }
+};
+
+
+/**
+ * @param {ol.CanvasTextState} textState Text state.
+ * @private
+ */
+ol.render.canvas.TextReplay.prototype.setReplayTextState_ = function(textState) {
+ var replayTextState = this.replayTextState_;
+ if (replayTextState &&
+ replayTextState.font == textState.font &&
+ replayTextState.textAlign == textState.textAlign &&
+ replayTextState.textBaseline == textState.textBaseline) {
+ return;
+ }
+ var setTextStyleInstruction = [ol.render.canvas.Instruction.SET_TEXT_STYLE,
+ textState.font, textState.textAlign, textState.textBaseline];
+ this.instructions.push(setTextStyleInstruction);
+ this.hitDetectionInstructions.push(setTextStyleInstruction);
+ if (!replayTextState) {
+ this.replayTextState_ = {
+ font: textState.font,
+ textAlign: textState.textAlign,
+ textBaseline: textState.textBaseline
+ };
+ } else {
+ replayTextState.font = textState.font;
+ replayTextState.textAlign = textState.textAlign;
+ replayTextState.textBaseline = textState.textBaseline;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.TextReplay.prototype.setTextStyle = function(textStyle) {
+ if (!textStyle) {
+ this.text_ = '';
+ } else {
+ var textFillStyle = textStyle.getFill();
+ if (!textFillStyle) {
+ this.textFillState_ = null;
+ } else {
+ var textFillStyleColor = textFillStyle.getColor();
+ var fillStyle = ol.colorlike.asColorLike(textFillStyleColor ?
+ textFillStyleColor : ol.render.canvas.defaultFillStyle);
+ if (!this.textFillState_) {
+ this.textFillState_ = {
+ fillStyle: fillStyle
+ };
+ } else {
+ var textFillState = this.textFillState_;
+ textFillState.fillStyle = fillStyle;
+ }
+ }
+ var textStrokeStyle = textStyle.getStroke();
+ if (!textStrokeStyle) {
+ this.textStrokeState_ = null;
+ } else {
+ var textStrokeStyleColor = textStrokeStyle.getColor();
+ var textStrokeStyleLineCap = textStrokeStyle.getLineCap();
+ var textStrokeStyleLineDash = textStrokeStyle.getLineDash();
+ var textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();
+ var textStrokeStyleWidth = textStrokeStyle.getWidth();
+ var textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();
+ var lineCap = textStrokeStyleLineCap !== undefined ?
+ textStrokeStyleLineCap : ol.render.canvas.defaultLineCap;
+ var lineDash = textStrokeStyleLineDash ?
+ textStrokeStyleLineDash.slice() : ol.render.canvas.defaultLineDash;
+ var lineJoin = textStrokeStyleLineJoin !== undefined ?
+ textStrokeStyleLineJoin : ol.render.canvas.defaultLineJoin;
+ var lineWidth = textStrokeStyleWidth !== undefined ?
+ textStrokeStyleWidth : ol.render.canvas.defaultLineWidth;
+ var miterLimit = textStrokeStyleMiterLimit !== undefined ?
+ textStrokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit;
+ var strokeStyle = ol.color.asString(textStrokeStyleColor ?
+ textStrokeStyleColor : ol.render.canvas.defaultStrokeStyle);
+ if (!this.textStrokeState_) {
+ this.textStrokeState_ = {
+ lineCap: lineCap,
+ lineDash: lineDash,
+ lineJoin: lineJoin,
+ lineWidth: lineWidth,
+ miterLimit: miterLimit,
+ strokeStyle: strokeStyle
+ };
+ } else {
+ var textStrokeState = this.textStrokeState_;
+ textStrokeState.lineCap = lineCap;
+ textStrokeState.lineDash = lineDash;
+ textStrokeState.lineJoin = lineJoin;
+ textStrokeState.lineWidth = lineWidth;
+ textStrokeState.miterLimit = miterLimit;
+ textStrokeState.strokeStyle = strokeStyle;
+ }
+ }
+ var textFont = textStyle.getFont();
+ var textOffsetX = textStyle.getOffsetX();
+ var textOffsetY = textStyle.getOffsetY();
+ var textRotation = textStyle.getRotation();
+ var textScale = textStyle.getScale();
+ var textText = textStyle.getText();
+ var textTextAlign = textStyle.getTextAlign();
+ var textTextBaseline = textStyle.getTextBaseline();
+ var font = textFont !== undefined ?
+ textFont : ol.render.canvas.defaultFont;
+ var textAlign = textTextAlign !== undefined ?
+ textTextAlign : ol.render.canvas.defaultTextAlign;
+ var textBaseline = textTextBaseline !== undefined ?
+ textTextBaseline : ol.render.canvas.defaultTextBaseline;
+ if (!this.textState_) {
+ this.textState_ = {
+ font: font,
+ textAlign: textAlign,
+ textBaseline: textBaseline
+ };
+ } else {
+ var textState = this.textState_;
+ textState.font = font;
+ textState.textAlign = textAlign;
+ textState.textBaseline = textBaseline;
+ }
+ this.text_ = textText !== undefined ? textText : '';
+ this.textOffsetX_ = textOffsetX !== undefined ? textOffsetX : 0;
+ this.textOffsetY_ = textOffsetY !== undefined ? textOffsetY : 0;
+ this.textRotation_ = textRotation !== undefined ? textRotation : 0;
+ this.textScale_ = textScale !== undefined ? textScale : 1;
+ }
+};
+
+
+/**
+ * @constructor
+ * @implements {ol.render.IReplayGroup}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Max extent.
+ * @param {number} resolution Resolution.
+ * @param {number=} opt_renderBuffer Optional rendering buffer.
+ * @struct
+ */
+ol.render.canvas.ReplayGroup = function(
+ tolerance, maxExtent, resolution, opt_renderBuffer) {
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.tolerance_ = tolerance;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.maxExtent_ = maxExtent;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.resolution_ = resolution;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.renderBuffer_ = opt_renderBuffer;
+
+ /**
+ * @private
+ * @type {!Object.<string,
+ * Object.<ol.render.ReplayType, ol.render.canvas.Replay>>}
+ */
+ this.replaysByZIndex_ = {};
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.hitDetectionContext_ = ol.dom.createCanvasContext2D(1, 1);
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.hitDetectionTransform_ = goog.vec.Mat4.createNumber();
+
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.render.canvas.ReplayGroup.prototype.finish = function() {
+ var zKey;
+ for (zKey in this.replaysByZIndex_) {
+ var replays = this.replaysByZIndex_[zKey];
+ var replayKey;
+ for (replayKey in replays) {
+ replays[replayKey].finish();
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T} callback Feature
+ * callback.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.canvas.ReplayGroup.prototype.forEachFeatureAtCoordinate = function(
+ coordinate, resolution, rotation, skippedFeaturesHash, callback) {
+
+ var transform = this.hitDetectionTransform_;
+ ol.vec.Mat4.makeTransform2D(transform, 0.5, 0.5,
+ 1 / resolution, -1 / resolution, -rotation,
+ -coordinate[0], -coordinate[1]);
+
+ var context = this.hitDetectionContext_;
+ context.clearRect(0, 0, 1, 1);
+
+ /**
+ * @type {ol.Extent}
+ */
+ var hitExtent;
+ if (this.renderBuffer_ !== undefined) {
+ hitExtent = ol.extent.createEmpty();
+ ol.extent.extendCoordinate(hitExtent, coordinate);
+ ol.extent.buffer(hitExtent, resolution * this.renderBuffer_, hitExtent);
+ }
+
+ return this.replayHitDetection_(context, transform, rotation,
+ skippedFeaturesHash,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ var imageData = context.getImageData(0, 0, 1, 1).data;
+ if (imageData[3] > 0) {
+ var result = callback(feature);
+ if (result) {
+ return result;
+ }
+ context.clearRect(0, 0, 1, 1);
+ }
+ }, hitExtent);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ReplayGroup.prototype.getReplay = function(zIndex, replayType) {
+ var zIndexKey = zIndex !== undefined ? zIndex.toString() : '0';
+ var replays = this.replaysByZIndex_[zIndexKey];
+ if (replays === undefined) {
+ replays = {};
+ this.replaysByZIndex_[zIndexKey] = replays;
+ }
+ var replay = replays[replayType];
+ if (replay === undefined) {
+ var Constructor = ol.render.canvas.BATCH_CONSTRUCTORS_[replayType];
+ goog.asserts.assert(Constructor !== undefined,
+ replayType +
+ ' constructor missing from ol.render.canvas.BATCH_CONSTRUCTORS_');
+ replay = new Constructor(this.tolerance_, this.maxExtent_,
+ this.resolution_);
+ replays[replayType] = replay;
+ }
+ return replay;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.ReplayGroup.prototype.isEmpty = function() {
+ return ol.object.isEmpty(this.replaysByZIndex_);
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {Array.<ol.render.ReplayType>=} opt_replayTypes Ordered replay types
+ * to replay. Default is {@link ol.render.REPLAY_ORDER}
+ */
+ol.render.canvas.ReplayGroup.prototype.replay = function(context, pixelRatio,
+ transform, viewRotation, skippedFeaturesHash, opt_replayTypes) {
+
+ /** @type {Array.<number>} */
+ var zs = Object.keys(this.replaysByZIndex_).map(Number);
+ zs.sort(ol.array.numberSafeCompareFunction);
+
+ // setup clipping so that the parts of over-simplified geometries are not
+ // visible outside the current extent when panning
+ var maxExtent = this.maxExtent_;
+ var minX = maxExtent[0];
+ var minY = maxExtent[1];
+ var maxX = maxExtent[2];
+ var maxY = maxExtent[3];
+ var flatClipCoords = [minX, minY, minX, maxY, maxX, maxY, maxX, minY];
+ ol.geom.flat.transform.transform2D(
+ flatClipCoords, 0, 8, 2, transform, flatClipCoords);
+ context.save();
+ context.beginPath();
+ context.moveTo(flatClipCoords[0], flatClipCoords[1]);
+ context.lineTo(flatClipCoords[2], flatClipCoords[3]);
+ context.lineTo(flatClipCoords[4], flatClipCoords[5]);
+ context.lineTo(flatClipCoords[6], flatClipCoords[7]);
+ context.closePath();
+ context.clip();
+
+ var replayTypes = opt_replayTypes ? opt_replayTypes : ol.render.REPLAY_ORDER;
+ var i, ii, j, jj, replays, replay;
+ for (i = 0, ii = zs.length; i < ii; ++i) {
+ replays = this.replaysByZIndex_[zs[i].toString()];
+ for (j = 0, jj = replayTypes.length; j < jj; ++j) {
+ replay = replays[replayTypes[j]];
+ if (replay !== undefined) {
+ replay.replay(context, pixelRatio, transform, viewRotation,
+ skippedFeaturesHash);
+ }
+ }
+ }
+
+ context.restore();
+};
+
+
+/**
+ * @private
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @param {number} viewRotation View rotation.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T} featureCallback
+ * Feature callback.
+ * @param {ol.Extent=} opt_hitExtent Only check features that intersect this
+ * extent.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.canvas.ReplayGroup.prototype.replayHitDetection_ = function(
+ context, transform, viewRotation, skippedFeaturesHash,
+ featureCallback, opt_hitExtent) {
+ /** @type {Array.<number>} */
+ var zs = Object.keys(this.replaysByZIndex_).map(Number);
+ zs.sort(function(a, b) {
+ return b - a;
+ });
+
+ var i, ii, j, replays, replay, result;
+ for (i = 0, ii = zs.length; i < ii; ++i) {
+ replays = this.replaysByZIndex_[zs[i].toString()];
+ for (j = ol.render.REPLAY_ORDER.length - 1; j >= 0; --j) {
+ replay = replays[ol.render.REPLAY_ORDER[j]];
+ if (replay !== undefined) {
+ result = replay.replayHitDetection(context, transform, viewRotation,
+ skippedFeaturesHash, featureCallback, opt_hitExtent);
+ if (result) {
+ return result;
+ }
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<ol.render.ReplayType,
+ * function(new: ol.render.canvas.Replay, number, ol.Extent,
+ * number)>}
+ */
+ol.render.canvas.BATCH_CONSTRUCTORS_ = {
+ 'Image': ol.render.canvas.ImageReplay,
+ 'LineString': ol.render.canvas.LineStringReplay,
+ 'Polygon': ol.render.canvas.PolygonReplay,
+ 'Text': ol.render.canvas.TextReplay
+};
+
+goog.provide('ol.render.Feature');
+
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryType');
+
+
+/**
+ * Lightweight, read-only, {@link ol.Feature} and {@link ol.geom.Geometry} like
+ * structure, optimized for rendering and styling. Geometry access through the
+ * API is limited to getting the type and extent of the geometry.
+ *
+ * @constructor
+ * @param {ol.geom.GeometryType} type Geometry type.
+ * @param {Array.<number>} flatCoordinates Flat coordinates. These always need
+ * to be right-handed for polygons.
+ * @param {Array.<number>|Array.<Array.<number>>} ends Ends or Endss.
+ * @param {Object.<string, *>} properties Properties.
+ */
+ol.render.Feature = function(type, flatCoordinates, ends, properties) {
+
+ /**
+ * @private
+ * @type {ol.Extent|undefined}
+ */
+ this.extent_;
+
+ goog.asserts.assert(type === ol.geom.GeometryType.POINT ||
+ type === ol.geom.GeometryType.MULTI_POINT ||
+ type === ol.geom.GeometryType.LINE_STRING ||
+ type === ol.geom.GeometryType.MULTI_LINE_STRING ||
+ type === ol.geom.GeometryType.POLYGON,
+ 'Need a Point, MultiPoint, LineString, MultiLineString or Polygon type');
+
+ /**
+ * @private
+ * @type {ol.geom.GeometryType}
+ */
+ this.type_ = type;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.flatCoordinates_ = flatCoordinates;
+
+ /**
+ * @private
+ * @type {Array.<number>|Array.<Array.<number>>}
+ */
+ this.ends_ = ends;
+
+ /**
+ * @private
+ * @type {Object.<string, *>}
+ */
+ this.properties_ = properties;
+
+};
+
+
+/**
+ * Get a feature property by its key.
+ * @param {string} key Key
+ * @return {*} Value for the requested key.
+ * @api
+ */
+ol.render.Feature.prototype.get = function(key) {
+ return this.properties_[key];
+};
+
+
+/**
+ * @return {Array.<number>|Array.<Array.<number>>} Ends or endss.
+ */
+ol.render.Feature.prototype.getEnds = function() {
+ return this.ends_;
+};
+
+
+/**
+ * Get the extent of this feature's geometry.
+ * @return {ol.Extent} Extent.
+ * @api
+ */
+ol.render.Feature.prototype.getExtent = function() {
+ if (!this.extent_) {
+ this.extent_ = this.type_ === ol.geom.GeometryType.POINT ?
+ ol.extent.createOrUpdateFromCoordinate(this.flatCoordinates_) :
+ ol.extent.createOrUpdateFromFlatCoordinates(
+ this.flatCoordinates_, 0, this.flatCoordinates_.length, 2);
+
+ }
+ return this.extent_;
+};
+
+
+/**
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.render.Feature.prototype.getOrientedFlatCoordinates = function() {
+ return this.flatCoordinates_;
+};
+
+
+/**
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.render.Feature.prototype.getFlatCoordinates =
+ ol.render.Feature.prototype.getOrientedFlatCoordinates;
+
+
+/**
+ * Get the feature for working with its geometry.
+ * @return {ol.render.Feature} Feature.
+ * @api
+ */
+ol.render.Feature.prototype.getGeometry = function() {
+ return this;
+};
+
+
+/**
+ * Get the feature properties.
+ * @return {Object.<string, *>} Feature properties.
+ * @api
+ */
+ol.render.Feature.prototype.getProperties = function() {
+ return this.properties_;
+};
+
+
+/**
+ * Get the feature for working with its geometry.
+ * @return {ol.render.Feature} Feature.
+ */
+ol.render.Feature.prototype.getSimplifiedGeometry =
+ ol.render.Feature.prototype.getGeometry;
+
+
+/**
+ * @return {number} Stride.
+ */
+ol.render.Feature.prototype.getStride = function() {
+ return 2;
+};
+
+
+/**
+ * @return {undefined}
+ */
+ol.render.Feature.prototype.getStyleFunction = ol.nullFunction;
+
+
+/**
+ * Get the type of this feature's geometry.
+ * @return {ol.geom.GeometryType} Geometry type.
+ * @api
+ */
+ol.render.Feature.prototype.getType = function() {
+ return this.type_;
+};
+
+goog.provide('ol.renderer.vector');
+
+goog.require('goog.asserts');
+goog.require('ol.render.Feature');
+goog.require('ol.render.IReplayGroup');
+goog.require('ol.style.ImageState');
+goog.require('ol.style.Style');
+
+
+/**
+ * @param {ol.Feature|ol.render.Feature} feature1 Feature 1.
+ * @param {ol.Feature|ol.render.Feature} feature2 Feature 2.
+ * @return {number} Order.
+ */
+ol.renderer.vector.defaultOrder = function(feature1, feature2) {
+ return goog.getUid(feature1) - goog.getUid(feature2);
+};
+
+
+/**
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {number} Squared pixel tolerance.
+ */
+ol.renderer.vector.getSquaredTolerance = function(resolution, pixelRatio) {
+ var tolerance = ol.renderer.vector.getTolerance(resolution, pixelRatio);
+ return tolerance * tolerance;
+};
+
+
+/**
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @return {number} Pixel tolerance.
+ */
+ol.renderer.vector.getTolerance = function(resolution, pixelRatio) {
+ return ol.SIMPLIFY_TOLERANCE * resolution / pixelRatio;
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.Circle} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderCircleGeometry_ = function(replayGroup, geometry, style, feature) {
+ var fillStyle = style.getFill();
+ var strokeStyle = style.getStroke();
+ if (fillStyle || strokeStyle) {
+ var polygonReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.POLYGON);
+ polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
+ polygonReplay.drawCircle(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ textReplay.drawText(geometry.getCenter(), 0, 2, 2, geometry, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.style.Style} style Style.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {function(this: T, ol.events.Event)} listener Listener function.
+ * @param {T} thisArg Value to use as `this` when executing `listener`.
+ * @return {boolean} `true` if style is loading.
+ * @template T
+ */
+ol.renderer.vector.renderFeature = function(
+ replayGroup, feature, style, squaredTolerance, listener, thisArg) {
+ var loading = false;
+ var imageStyle, imageState;
+ imageStyle = style.getImage();
+ if (imageStyle) {
+ imageState = imageStyle.getImageState();
+ if (imageState == ol.style.ImageState.LOADED ||
+ imageState == ol.style.ImageState.ERROR) {
+ imageStyle.unlistenImageChange(listener, thisArg);
+ } else {
+ if (imageState == ol.style.ImageState.IDLE) {
+ imageStyle.load();
+ }
+ imageState = imageStyle.getImageState();
+ goog.asserts.assert(imageState == ol.style.ImageState.LOADING,
+ 'imageState should be LOADING');
+ imageStyle.listenImageChange(listener, thisArg);
+ loading = true;
+ }
+ }
+ ol.renderer.vector.renderFeature_(replayGroup, feature, style,
+ squaredTolerance);
+ return loading;
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.style.Style} style Style.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @private
+ */
+ol.renderer.vector.renderFeature_ = function(
+ replayGroup, feature, style, squaredTolerance) {
+ var geometry = style.getGeometryFunction()(feature);
+ if (!geometry) {
+ return;
+ }
+ var simplifiedGeometry = geometry.getSimplifiedGeometry(squaredTolerance);
+ var geometryRenderer =
+ ol.renderer.vector.GEOMETRY_RENDERERS_[simplifiedGeometry.getType()];
+ goog.asserts.assert(geometryRenderer !== undefined,
+ 'geometryRenderer should be defined');
+ geometryRenderer(replayGroup, simplifiedGeometry, style, feature);
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.GeometryCollection} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderGeometryCollectionGeometry_ = function(replayGroup, geometry, style, feature) {
+ var geometries = geometry.getGeometriesArray();
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ var geometryRenderer =
+ ol.renderer.vector.GEOMETRY_RENDERERS_[geometries[i].getType()];
+ goog.asserts.assert(geometryRenderer !== undefined,
+ 'geometryRenderer should be defined');
+ geometryRenderer(replayGroup, geometries[i], style, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.LineString|ol.render.Feature} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderLineStringGeometry_ = function(replayGroup, geometry, style, feature) {
+ var strokeStyle = style.getStroke();
+ if (strokeStyle) {
+ var lineStringReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.LINE_STRING);
+ lineStringReplay.setFillStrokeStyle(null, strokeStyle);
+ lineStringReplay.drawLineString(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ textReplay.drawText(geometry.getFlatMidpoint(), 0, 2, 2, geometry, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.MultiLineString|ol.render.Feature} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderMultiLineStringGeometry_ = function(replayGroup, geometry, style, feature) {
+ var strokeStyle = style.getStroke();
+ if (strokeStyle) {
+ var lineStringReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.LINE_STRING);
+ lineStringReplay.setFillStrokeStyle(null, strokeStyle);
+ lineStringReplay.drawMultiLineString(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ var flatMidpointCoordinates = geometry.getFlatMidpoints();
+ textReplay.drawText(flatMidpointCoordinates, 0,
+ flatMidpointCoordinates.length, 2, geometry, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.MultiPolygon} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderMultiPolygonGeometry_ = function(replayGroup, geometry, style, feature) {
+ var fillStyle = style.getFill();
+ var strokeStyle = style.getStroke();
+ if (strokeStyle || fillStyle) {
+ var polygonReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.POLYGON);
+ polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
+ polygonReplay.drawMultiPolygon(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ var flatInteriorPointCoordinates = geometry.getFlatInteriorPoints();
+ textReplay.drawText(flatInteriorPointCoordinates, 0,
+ flatInteriorPointCoordinates.length, 2, geometry, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.Point|ol.render.Feature} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderPointGeometry_ = function(replayGroup, geometry, style, feature) {
+ var imageStyle = style.getImage();
+ if (imageStyle) {
+ if (imageStyle.getImageState() != ol.style.ImageState.LOADED) {
+ return;
+ }
+ var imageReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.IMAGE);
+ imageReplay.setImageStyle(imageStyle);
+ imageReplay.drawPoint(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ textReplay.drawText(geometry.getFlatCoordinates(), 0, 2, 2, geometry,
+ feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.MultiPoint|ol.render.Feature} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderMultiPointGeometry_ = function(replayGroup, geometry, style, feature) {
+ var imageStyle = style.getImage();
+ if (imageStyle) {
+ if (imageStyle.getImageState() != ol.style.ImageState.LOADED) {
+ return;
+ }
+ var imageReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.IMAGE);
+ imageReplay.setImageStyle(imageStyle);
+ imageReplay.drawMultiPoint(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ var flatCoordinates = geometry.getFlatCoordinates();
+ textReplay.drawText(flatCoordinates, 0, flatCoordinates.length,
+ geometry.getStride(), geometry, feature);
+ }
+};
+
+
+/**
+ * @param {ol.render.IReplayGroup} replayGroup Replay group.
+ * @param {ol.geom.Polygon|ol.render.Feature} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.renderer.vector.renderPolygonGeometry_ = function(replayGroup, geometry, style, feature) {
+ var fillStyle = style.getFill();
+ var strokeStyle = style.getStroke();
+ if (fillStyle || strokeStyle) {
+ var polygonReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.POLYGON);
+ polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
+ polygonReplay.drawPolygon(geometry, feature);
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ var textReplay = replayGroup.getReplay(
+ style.getZIndex(), ol.render.ReplayType.TEXT);
+ textReplay.setTextStyle(textStyle);
+ textReplay.drawText(
+ geometry.getFlatInteriorPoint(), 0, 2, 2, geometry, feature);
+ }
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<ol.geom.GeometryType,
+ * function(ol.render.IReplayGroup, ol.geom.Geometry,
+ * ol.style.Style, Object)>}
+ */
+ol.renderer.vector.GEOMETRY_RENDERERS_ = {
+ 'Point': ol.renderer.vector.renderPointGeometry_,
+ 'LineString': ol.renderer.vector.renderLineStringGeometry_,
+ 'Polygon': ol.renderer.vector.renderPolygonGeometry_,
+ 'MultiPoint': ol.renderer.vector.renderMultiPointGeometry_,
+ 'MultiLineString': ol.renderer.vector.renderMultiLineStringGeometry_,
+ 'MultiPolygon': ol.renderer.vector.renderMultiPolygonGeometry_,
+ 'GeometryCollection': ol.renderer.vector.renderGeometryCollectionGeometry_,
+ 'Circle': ol.renderer.vector.renderCircleGeometry_
+};
+
+goog.provide('ol.ImageCanvas');
+
+goog.require('goog.asserts');
+goog.require('ol.ImageBase');
+goog.require('ol.ImageState');
+
+
+/**
+ * @constructor
+ * @extends {ol.ImageBase}
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {Array.<ol.Attribution>} attributions Attributions.
+ * @param {HTMLCanvasElement} canvas Canvas.
+ * @param {ol.ImageCanvasLoader=} opt_loader Optional loader function to
+ * support asynchronous canvas drawing.
+ */
+ol.ImageCanvas = function(extent, resolution, pixelRatio, attributions,
+ canvas, opt_loader) {
+
+ /**
+ * Optional canvas loader function.
+ * @type {?ol.ImageCanvasLoader}
+ * @private
+ */
+ this.loader_ = opt_loader !== undefined ? opt_loader : null;
+
+ var state = opt_loader !== undefined ?
+ ol.ImageState.IDLE : ol.ImageState.LOADED;
+
+ ol.ImageBase.call(this, extent, resolution, pixelRatio, state, attributions);
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = canvas;
+
+ /**
+ * @private
+ * @type {Error}
+ */
+ this.error_ = null;
+
+};
+ol.inherits(ol.ImageCanvas, ol.ImageBase);
+
+
+/**
+ * Get any error associated with asynchronous rendering.
+ * @return {Error} Any error that occurred during rendering.
+ */
+ol.ImageCanvas.prototype.getError = function() {
+ return this.error_;
+};
+
+
+/**
+ * Handle async drawing complete.
+ * @param {Error} err Any error during drawing.
+ * @private
+ */
+ol.ImageCanvas.prototype.handleLoad_ = function(err) {
+ if (err) {
+ this.error_ = err;
+ this.state = ol.ImageState.ERROR;
+ } else {
+ this.state = ol.ImageState.LOADED;
+ }
+ this.changed();
+};
+
+
+/**
+ * Trigger drawing on canvas.
+ */
+ol.ImageCanvas.prototype.load = function() {
+ if (this.state == ol.ImageState.IDLE) {
+ goog.asserts.assert(this.loader_, 'this.loader_ must be set');
+ this.state = ol.ImageState.LOADING;
+ this.changed();
+ this.loader_(this.handleLoad_.bind(this));
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.ImageCanvas.prototype.getImage = function(opt_context) {
+ return this.canvas_;
+};
+
+goog.provide('ol.reproj');
+
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.math');
+goog.require('ol.proj');
+
+
+/**
+ * We need to employ more sophisticated solution
+ * if the web browser antialiases clipping edges on canvas.
+ *
+ * Currently only Chrome does not antialias the edges, but this is probably
+ * going to be "fixed" in the future: http://crbug.com/424291
+ *
+ * @type {boolean}
+ * @private
+ */
+ol.reproj.browserAntialiasesClip_ = (function(winNav, winChrome) {
+ // Adapted from http://stackoverflow.com/questions/4565112/javascript-how-to-find-out-if-the-user-browser-is-chrome
+ var isOpera = winNav.userAgent.indexOf('OPR') > -1;
+ var isIEedge = winNav.userAgent.indexOf('Edge') > -1;
+ return !(
+ !winNav.userAgent.match('CriOS') && // Not Chrome on iOS
+ winChrome !== null && winChrome !== undefined && // Has chrome in window
+ winNav.vendor === 'Google Inc.' && // Vendor is Google.
+ isOpera == false && // Not Opera
+ isIEedge == false // Not Edge
+ );
+})(ol.global.navigator, ol.global.chrome);
+
+
+/**
+ * Calculates ideal resolution to use from the source in order to achieve
+ * pixel mapping as close as possible to 1:1 during reprojection.
+ * The resolution is calculated regardless of what resolutions
+ * are actually available in the dataset (TileGrid, Image, ...).
+ *
+ * @param {ol.proj.Projection} sourceProj Source projection.
+ * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {ol.Coordinate} targetCenter Target center.
+ * @param {number} targetResolution Target resolution.
+ * @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.
+ */
+ol.reproj.calculateSourceResolution = function(sourceProj, targetProj,
+ targetCenter, targetResolution) {
+
+ var sourceCenter = ol.proj.transform(targetCenter, targetProj, sourceProj);
+
+ // calculate the ideal resolution of the source data
+ var sourceResolution =
+ targetProj.getPointResolution(targetResolution, targetCenter);
+
+ var targetMetersPerUnit = targetProj.getMetersPerUnit();
+ if (targetMetersPerUnit !== undefined) {
+ sourceResolution *= targetMetersPerUnit;
+ }
+ var sourceMetersPerUnit = sourceProj.getMetersPerUnit();
+ if (sourceMetersPerUnit !== undefined) {
+ sourceResolution /= sourceMetersPerUnit;
+ }
+
+ // Based on the projection properties, the point resolution at the specified
+ // coordinates may be slightly different. We need to reverse-compensate this
+ // in order to achieve optimal results.
+
+ var compensationFactor =
+ sourceProj.getPointResolution(sourceResolution, sourceCenter) /
+ sourceResolution;
+
+ if (isFinite(compensationFactor) && compensationFactor > 0) {
+ sourceResolution /= compensationFactor;
+ }
+
+ return sourceResolution;
+};
+
+
+/**
+ * Enlarge the clipping triangle point by 1 pixel to ensure the edges overlap
+ * in order to mask gaps caused by antialiasing.
+ *
+ * @param {number} centroidX Centroid of the triangle (x coordinate in pixels).
+ * @param {number} centroidY Centroid of the triangle (y coordinate in pixels).
+ * @param {number} x X coordinate of the point (in pixels).
+ * @param {number} y Y coordinate of the point (in pixels).
+ * @return {ol.Coordinate} New point 1 px farther from the centroid.
+ * @private
+ */
+ol.reproj.enlargeClipPoint_ = function(centroidX, centroidY, x, y) {
+ var dX = x - centroidX, dY = y - centroidY;
+ var distance = Math.sqrt(dX * dX + dY * dY);
+ return [Math.round(x + dX / distance), Math.round(y + dY / distance)];
+};
+
+
+/**
+ * Renders the source data into new canvas based on the triangulation.
+ *
+ * @param {number} width Width of the canvas.
+ * @param {number} height Height of the canvas.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} sourceResolution Source resolution.
+ * @param {ol.Extent} sourceExtent Extent of the data source.
+ * @param {number} targetResolution Target resolution.
+ * @param {ol.Extent} targetExtent Target extent.
+ * @param {ol.reproj.Triangulation} triangulation Calculated triangulation.
+ * @param {Array.<{extent: ol.Extent,
+ * image: (HTMLCanvasElement|Image|HTMLVideoElement)}>} sources
+ * Array of sources.
+ * @param {number} gutter Gutter of the sources.
+ * @param {boolean=} opt_renderEdges Render reprojection edges.
+ * @return {HTMLCanvasElement} Canvas with reprojected data.
+ */
+ol.reproj.render = function(width, height, pixelRatio,
+ sourceResolution, sourceExtent, targetResolution, targetExtent,
+ triangulation, sources, gutter, opt_renderEdges) {
+
+ var context = ol.dom.createCanvasContext2D(Math.round(pixelRatio * width),
+ Math.round(pixelRatio * height));
+
+ if (sources.length === 0) {
+ return context.canvas;
+ }
+
+ context.scale(pixelRatio, pixelRatio);
+
+ var sourceDataExtent = ol.extent.createEmpty();
+ sources.forEach(function(src, i, arr) {
+ ol.extent.extend(sourceDataExtent, src.extent);
+ });
+
+ var canvasWidthInUnits = ol.extent.getWidth(sourceDataExtent);
+ var canvasHeightInUnits = ol.extent.getHeight(sourceDataExtent);
+ var stitchContext = ol.dom.createCanvasContext2D(
+ Math.round(pixelRatio * canvasWidthInUnits / sourceResolution),
+ Math.round(pixelRatio * canvasHeightInUnits / sourceResolution));
+
+ var stitchScale = pixelRatio / sourceResolution;
+
+ sources.forEach(function(src, i, arr) {
+ var xPos = src.extent[0] - sourceDataExtent[0];
+ var yPos = -(src.extent[3] - sourceDataExtent[3]);
+ var srcWidth = ol.extent.getWidth(src.extent);
+ var srcHeight = ol.extent.getHeight(src.extent);
+
+ stitchContext.drawImage(
+ src.image,
+ gutter, gutter,
+ src.image.width - 2 * gutter, src.image.height - 2 * gutter,
+ xPos * stitchScale, yPos * stitchScale,
+ srcWidth * stitchScale, srcHeight * stitchScale);
+ });
+
+ var targetTopLeft = ol.extent.getTopLeft(targetExtent);
+
+ triangulation.getTriangles().forEach(function(triangle, i, arr) {
+ /* Calculate affine transform (src -> dst)
+ * Resulting matrix can be used to transform coordinate
+ * from `sourceProjection` to destination pixels.
+ *
+ * To optimize number of context calls and increase numerical stability,
+ * we also do the following operations:
+ * trans(-topLeftExtentCorner), scale(1 / targetResolution), scale(1, -1)
+ * here before solving the linear system so [ui, vi] are pixel coordinates.
+ *
+ * Src points: xi, yi
+ * Dst points: ui, vi
+ * Affine coefficients: aij
+ *
+ * | x0 y0 1 0 0 0 | |a00| |u0|
+ * | x1 y1 1 0 0 0 | |a01| |u1|
+ * | x2 y2 1 0 0 0 | x |a02| = |u2|
+ * | 0 0 0 x0 y0 1 | |a10| |v0|
+ * | 0 0 0 x1 y1 1 | |a11| |v1|
+ * | 0 0 0 x2 y2 1 | |a12| |v2|
+ */
+ var source = triangle.source, target = triangle.target;
+ var x0 = source[0][0], y0 = source[0][1],
+ x1 = source[1][0], y1 = source[1][1],
+ x2 = source[2][0], y2 = source[2][1];
+ var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution,
+ v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;
+ var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution,
+ v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;
+ var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution,
+ v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;
+
+ // Shift all the source points to improve numerical stability
+ // of all the subsequent calculations. The [x0, y0] is used here.
+ // This is also used to simplify the linear system.
+ var sourceNumericalShiftX = x0, sourceNumericalShiftY = y0;
+ x0 = 0;
+ y0 = 0;
+ x1 -= sourceNumericalShiftX;
+ y1 -= sourceNumericalShiftY;
+ x2 -= sourceNumericalShiftX;
+ y2 -= sourceNumericalShiftY;
+
+ var augmentedMatrix = [
+ [x1, y1, 0, 0, u1 - u0],
+ [x2, y2, 0, 0, u2 - u0],
+ [0, 0, x1, y1, v1 - v0],
+ [0, 0, x2, y2, v2 - v0]
+ ];
+ var affineCoefs = ol.math.solveLinearSystem(augmentedMatrix);
+ if (!affineCoefs) {
+ return;
+ }
+
+ context.save();
+ context.beginPath();
+ if (ol.reproj.browserAntialiasesClip_) {
+ var centroidX = (u0 + u1 + u2) / 3, centroidY = (v0 + v1 + v2) / 3;
+ var p0 = ol.reproj.enlargeClipPoint_(centroidX, centroidY, u0, v0);
+ var p1 = ol.reproj.enlargeClipPoint_(centroidX, centroidY, u1, v1);
+ var p2 = ol.reproj.enlargeClipPoint_(centroidX, centroidY, u2, v2);
+
+ context.moveTo(p0[0], p0[1]);
+ context.lineTo(p1[0], p1[1]);
+ context.lineTo(p2[0], p2[1]);
+ } else {
+ context.moveTo(u0, v0);
+ context.lineTo(u1, v1);
+ context.lineTo(u2, v2);
+ }
+ context.closePath();
+ context.clip();
+
+ context.transform(
+ affineCoefs[0], affineCoefs[2], affineCoefs[1], affineCoefs[3], u0, v0);
+
+ context.translate(sourceDataExtent[0] - sourceNumericalShiftX,
+ sourceDataExtent[3] - sourceNumericalShiftY);
+
+ context.scale(sourceResolution / pixelRatio,
+ -sourceResolution / pixelRatio);
+
+ context.drawImage(stitchContext.canvas, 0, 0);
+ context.restore();
+ });
+
+ if (opt_renderEdges) {
+ context.save();
+
+ context.strokeStyle = 'black';
+ context.lineWidth = 1;
+
+ triangulation.getTriangles().forEach(function(triangle, i, arr) {
+ var target = triangle.target;
+ var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution,
+ v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;
+ var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution,
+ v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;
+ var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution,
+ v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;
+
+ context.beginPath();
+ context.moveTo(u0, v0);
+ context.lineTo(u1, v1);
+ context.lineTo(u2, v2);
+ context.closePath();
+ context.stroke();
+ });
+
+ context.restore();
+ }
+ return context.canvas;
+};
+
+goog.provide('ol.reproj.Triangulation');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.math');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Class containing triangulation of the given target extent.
+ * Used for determining source data and the reprojection itself.
+ *
+ * @param {ol.proj.Projection} sourceProj Source projection.
+ * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {ol.Extent} targetExtent Target extent to triangulate.
+ * @param {ol.Extent} maxSourceExtent Maximal source extent that can be used.
+ * @param {number} errorThreshold Acceptable error (in source units).
+ * @constructor
+ */
+ol.reproj.Triangulation = function(sourceProj, targetProj, targetExtent,
+ maxSourceExtent, errorThreshold) {
+
+ /**
+ * @type {ol.proj.Projection}
+ * @private
+ */
+ this.sourceProj_ = sourceProj;
+
+ /**
+ * @type {ol.proj.Projection}
+ * @private
+ */
+ this.targetProj_ = targetProj;
+
+ /** @type {!Object.<string, ol.Coordinate>} */
+ var transformInvCache = {};
+ var transformInv = ol.proj.getTransform(this.targetProj_, this.sourceProj_);
+
+ /**
+ * @param {ol.Coordinate} c A coordinate.
+ * @return {ol.Coordinate} Transformed coordinate.
+ * @private
+ */
+ this.transformInv_ = function(c) {
+ var key = c[0] + '/' + c[1];
+ if (!transformInvCache[key]) {
+ transformInvCache[key] = transformInv(c);
+ }
+ return transformInvCache[key];
+ };
+
+ /**
+ * @type {ol.Extent}
+ * @private
+ */
+ this.maxSourceExtent_ = maxSourceExtent;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.errorThresholdSquared_ = errorThreshold * errorThreshold;
+
+ /**
+ * @type {Array.<ol.ReprojTriangle>}
+ * @private
+ */
+ this.triangles_ = [];
+
+ /**
+ * Indicates that the triangulation crosses edge of the source projection.
+ * @type {boolean}
+ * @private
+ */
+ this.wrapsXInSource_ = false;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.canWrapXInSource_ = this.sourceProj_.canWrapX() &&
+ !!maxSourceExtent &&
+ !!this.sourceProj_.getExtent() &&
+ (ol.extent.getWidth(maxSourceExtent) ==
+ ol.extent.getWidth(this.sourceProj_.getExtent()));
+
+ /**
+ * @type {?number}
+ * @private
+ */
+ this.sourceWorldWidth_ = this.sourceProj_.getExtent() ?
+ ol.extent.getWidth(this.sourceProj_.getExtent()) : null;
+
+ /**
+ * @type {?number}
+ * @private
+ */
+ this.targetWorldWidth_ = this.targetProj_.getExtent() ?
+ ol.extent.getWidth(this.targetProj_.getExtent()) : null;
+
+ var destinationTopLeft = ol.extent.getTopLeft(targetExtent);
+ var destinationTopRight = ol.extent.getTopRight(targetExtent);
+ var destinationBottomRight = ol.extent.getBottomRight(targetExtent);
+ var destinationBottomLeft = ol.extent.getBottomLeft(targetExtent);
+ var sourceTopLeft = this.transformInv_(destinationTopLeft);
+ var sourceTopRight = this.transformInv_(destinationTopRight);
+ var sourceBottomRight = this.transformInv_(destinationBottomRight);
+ var sourceBottomLeft = this.transformInv_(destinationBottomLeft);
+
+ this.addQuad_(
+ destinationTopLeft, destinationTopRight,
+ destinationBottomRight, destinationBottomLeft,
+ sourceTopLeft, sourceTopRight, sourceBottomRight, sourceBottomLeft,
+ ol.RASTER_REPROJECTION_MAX_SUBDIVISION);
+
+ if (this.wrapsXInSource_) {
+ // Fix coordinates (ol.proj returns wrapped coordinates, "unwrap" here).
+ // This significantly simplifies the rest of the reprojection process.
+
+ goog.asserts.assert(this.sourceWorldWidth_ !== null);
+ var leftBound = Infinity;
+ this.triangles_.forEach(function(triangle, i, arr) {
+ leftBound = Math.min(leftBound,
+ triangle.source[0][0], triangle.source[1][0], triangle.source[2][0]);
+ });
+
+ // Shift triangles to be as close to `leftBound` as possible
+ // (if the distance is more than `worldWidth / 2` it can be closer.
+ this.triangles_.forEach(function(triangle) {
+ if (Math.max(triangle.source[0][0], triangle.source[1][0],
+ triangle.source[2][0]) - leftBound > this.sourceWorldWidth_ / 2) {
+ var newTriangle = [[triangle.source[0][0], triangle.source[0][1]],
+ [triangle.source[1][0], triangle.source[1][1]],
+ [triangle.source[2][0], triangle.source[2][1]]];
+ if ((newTriangle[0][0] - leftBound) > this.sourceWorldWidth_ / 2) {
+ newTriangle[0][0] -= this.sourceWorldWidth_;
+ }
+ if ((newTriangle[1][0] - leftBound) > this.sourceWorldWidth_ / 2) {
+ newTriangle[1][0] -= this.sourceWorldWidth_;
+ }
+ if ((newTriangle[2][0] - leftBound) > this.sourceWorldWidth_ / 2) {
+ newTriangle[2][0] -= this.sourceWorldWidth_;
+ }
+
+ // Rarely (if the extent contains both the dateline and prime meridian)
+ // the shift can in turn break some triangles.
+ // Detect this here and don't shift in such cases.
+ var minX = Math.min(
+ newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);
+ var maxX = Math.max(
+ newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);
+ if ((maxX - minX) < this.sourceWorldWidth_ / 2) {
+ triangle.source = newTriangle;
+ }
+ }
+ }, this);
+ }
+
+ transformInvCache = {};
+};
+
+
+/**
+ * Adds triangle to the triangulation.
+ * @param {ol.Coordinate} a The target a coordinate.
+ * @param {ol.Coordinate} b The target b coordinate.
+ * @param {ol.Coordinate} c The target c coordinate.
+ * @param {ol.Coordinate} aSrc The source a coordinate.
+ * @param {ol.Coordinate} bSrc The source b coordinate.
+ * @param {ol.Coordinate} cSrc The source c coordinate.
+ * @private
+ */
+ol.reproj.Triangulation.prototype.addTriangle_ = function(a, b, c,
+ aSrc, bSrc, cSrc) {
+ this.triangles_.push({
+ source: [aSrc, bSrc, cSrc],
+ target: [a, b, c]
+ });
+};
+
+
+/**
+ * Adds quad (points in clock-wise order) to the triangulation
+ * (and reprojects the vertices) if valid.
+ * Performs quad subdivision if needed to increase precision.
+ *
+ * @param {ol.Coordinate} a The target a coordinate.
+ * @param {ol.Coordinate} b The target b coordinate.
+ * @param {ol.Coordinate} c The target c coordinate.
+ * @param {ol.Coordinate} d The target d coordinate.
+ * @param {ol.Coordinate} aSrc The source a coordinate.
+ * @param {ol.Coordinate} bSrc The source b coordinate.
+ * @param {ol.Coordinate} cSrc The source c coordinate.
+ * @param {ol.Coordinate} dSrc The source d coordinate.
+ * @param {number} maxSubdivision Maximal allowed subdivision of the quad.
+ * @private
+ */
+ol.reproj.Triangulation.prototype.addQuad_ = function(a, b, c, d,
+ aSrc, bSrc, cSrc, dSrc, maxSubdivision) {
+
+ var sourceQuadExtent = ol.extent.boundingExtent([aSrc, bSrc, cSrc, dSrc]);
+ var sourceCoverageX = this.sourceWorldWidth_ ?
+ ol.extent.getWidth(sourceQuadExtent) / this.sourceWorldWidth_ : null;
+
+ // when the quad is wrapped in the source projection
+ // it covers most of the projection extent, but not fully
+ var wrapsX = this.sourceProj_.canWrapX() &&
+ sourceCoverageX > 0.5 && sourceCoverageX < 1;
+
+ var needsSubdivision = false;
+
+ if (maxSubdivision > 0) {
+ if (this.targetProj_.isGlobal() && this.targetWorldWidth_) {
+ var targetQuadExtent = ol.extent.boundingExtent([a, b, c, d]);
+ var targetCoverageX =
+ ol.extent.getWidth(targetQuadExtent) / this.targetWorldWidth_;
+ needsSubdivision |=
+ targetCoverageX > ol.RASTER_REPROJECTION_MAX_TRIANGLE_WIDTH;
+ }
+ if (!wrapsX && this.sourceProj_.isGlobal() && sourceCoverageX) {
+ needsSubdivision |=
+ sourceCoverageX > ol.RASTER_REPROJECTION_MAX_TRIANGLE_WIDTH;
+ }
+ }
+
+ if (!needsSubdivision && this.maxSourceExtent_) {
+ if (!ol.extent.intersects(sourceQuadExtent, this.maxSourceExtent_)) {
+ // whole quad outside source projection extent -> ignore
+ return;
+ }
+ }
+
+ if (!needsSubdivision) {
+ if (!isFinite(aSrc[0]) || !isFinite(aSrc[1]) ||
+ !isFinite(bSrc[0]) || !isFinite(bSrc[1]) ||
+ !isFinite(cSrc[0]) || !isFinite(cSrc[1]) ||
+ !isFinite(dSrc[0]) || !isFinite(dSrc[1])) {
+ if (maxSubdivision > 0) {
+ needsSubdivision = true;
+ } else {
+ return;
+ }
+ }
+ }
+
+ if (maxSubdivision > 0) {
+ if (!needsSubdivision) {
+ var center = [(a[0] + c[0]) / 2, (a[1] + c[1]) / 2];
+ var centerSrc = this.transformInv_(center);
+
+ var dx;
+ if (wrapsX) {
+ goog.asserts.assert(this.sourceWorldWidth_);
+ var centerSrcEstimX =
+ (ol.math.modulo(aSrc[0], this.sourceWorldWidth_) +
+ ol.math.modulo(cSrc[0], this.sourceWorldWidth_)) / 2;
+ dx = centerSrcEstimX -
+ ol.math.modulo(centerSrc[0], this.sourceWorldWidth_);
+ } else {
+ dx = (aSrc[0] + cSrc[0]) / 2 - centerSrc[0];
+ }
+ var dy = (aSrc[1] + cSrc[1]) / 2 - centerSrc[1];
+ var centerSrcErrorSquared = dx * dx + dy * dy;
+ needsSubdivision = centerSrcErrorSquared > this.errorThresholdSquared_;
+ }
+ if (needsSubdivision) {
+ if (Math.abs(a[0] - c[0]) <= Math.abs(a[1] - c[1])) {
+ // split horizontally (top & bottom)
+ var bc = [(b[0] + c[0]) / 2, (b[1] + c[1]) / 2];
+ var bcSrc = this.transformInv_(bc);
+ var da = [(d[0] + a[0]) / 2, (d[1] + a[1]) / 2];
+ var daSrc = this.transformInv_(da);
+
+ this.addQuad_(
+ a, b, bc, da, aSrc, bSrc, bcSrc, daSrc, maxSubdivision - 1);
+ this.addQuad_(
+ da, bc, c, d, daSrc, bcSrc, cSrc, dSrc, maxSubdivision - 1);
+ } else {
+ // split vertically (left & right)
+ var ab = [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2];
+ var abSrc = this.transformInv_(ab);
+ var cd = [(c[0] + d[0]) / 2, (c[1] + d[1]) / 2];
+ var cdSrc = this.transformInv_(cd);
+
+ this.addQuad_(
+ a, ab, cd, d, aSrc, abSrc, cdSrc, dSrc, maxSubdivision - 1);
+ this.addQuad_(
+ ab, b, c, cd, abSrc, bSrc, cSrc, cdSrc, maxSubdivision - 1);
+ }
+ return;
+ }
+ }
+
+ if (wrapsX) {
+ if (!this.canWrapXInSource_) {
+ return;
+ }
+ this.wrapsXInSource_ = true;
+ }
+
+ this.addTriangle_(a, c, d, aSrc, cSrc, dSrc);
+ this.addTriangle_(a, b, c, aSrc, bSrc, cSrc);
+};
+
+
+/**
+ * Calculates extent of the 'source' coordinates from all the triangles.
+ *
+ * @return {ol.Extent} Calculated extent.
+ */
+ol.reproj.Triangulation.prototype.calculateSourceExtent = function() {
+ var extent = ol.extent.createEmpty();
+
+ this.triangles_.forEach(function(triangle, i, arr) {
+ var src = triangle.source;
+ ol.extent.extendCoordinate(extent, src[0]);
+ ol.extent.extendCoordinate(extent, src[1]);
+ ol.extent.extendCoordinate(extent, src[2]);
+ });
+
+ return extent;
+};
+
+
+/**
+ * @return {Array.<ol.ReprojTriangle>} Array of the calculated triangles.
+ */
+ol.reproj.Triangulation.prototype.getTriangles = function() {
+ return this.triangles_;
+};
+
+goog.provide('ol.reproj.Image');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.ImageBase');
+goog.require('ol.ImageState');
+goog.require('ol.extent');
+goog.require('ol.proj');
+goog.require('ol.reproj');
+goog.require('ol.reproj.Triangulation');
+
+
+/**
+ * @classdesc
+ * Class encapsulating single reprojected image.
+ * See {@link ol.source.Image}.
+ *
+ * @constructor
+ * @extends {ol.ImageBase}
+ * @param {ol.proj.Projection} sourceProj Source projection (of the data).
+ * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {ol.Extent} targetExtent Target extent.
+ * @param {number} targetResolution Target resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.ReprojImageFunctionType} getImageFunction
+ * Function returning source images (extent, resolution, pixelRatio).
+ */
+ol.reproj.Image = function(sourceProj, targetProj,
+ targetExtent, targetResolution, pixelRatio, getImageFunction) {
+
+ /**
+ * @private
+ * @type {ol.proj.Projection}
+ */
+ this.targetProj_ = targetProj;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.maxSourceExtent_ = sourceProj.getExtent();
+ var maxTargetExtent = targetProj.getExtent();
+
+ var limitedTargetExtent = maxTargetExtent ?
+ ol.extent.getIntersection(targetExtent, maxTargetExtent) : targetExtent;
+
+ var targetCenter = ol.extent.getCenter(limitedTargetExtent);
+ var sourceResolution = ol.reproj.calculateSourceResolution(
+ sourceProj, targetProj, targetCenter, targetResolution);
+
+ var errorThresholdInPixels = ol.DEFAULT_RASTER_REPROJECTION_ERROR_THRESHOLD;
+
+ /**
+ * @private
+ * @type {!ol.reproj.Triangulation}
+ */
+ this.triangulation_ = new ol.reproj.Triangulation(
+ sourceProj, targetProj, limitedTargetExtent, this.maxSourceExtent_,
+ sourceResolution * errorThresholdInPixels);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.targetResolution_ = targetResolution;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.targetExtent_ = targetExtent;
+
+ var sourceExtent = this.triangulation_.calculateSourceExtent();
+
+ /**
+ * @private
+ * @type {ol.ImageBase}
+ */
+ this.sourceImage_ =
+ getImageFunction(sourceExtent, sourceResolution, pixelRatio);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.sourcePixelRatio_ =
+ this.sourceImage_ ? this.sourceImage_.getPixelRatio() : 1;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = null;
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.sourceListenerKey_ = null;
+
+
+ var state = ol.ImageState.LOADED;
+ var attributions = [];
+
+ if (this.sourceImage_) {
+ state = ol.ImageState.IDLE;
+ attributions = this.sourceImage_.getAttributions();
+ }
+
+ ol.ImageBase.call(this, targetExtent, targetResolution, this.sourcePixelRatio_,
+ state, attributions);
+};
+ol.inherits(ol.reproj.Image, ol.ImageBase);
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Image.prototype.disposeInternal = function() {
+ if (this.state == ol.ImageState.LOADING) {
+ this.unlistenSource_();
+ }
+ ol.ImageBase.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Image.prototype.getImage = function(opt_context) {
+ return this.canvas_;
+};
+
+
+/**
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.reproj.Image.prototype.getProjection = function() {
+ return this.targetProj_;
+};
+
+
+/**
+ * @private
+ */
+ol.reproj.Image.prototype.reproject_ = function() {
+ var sourceState = this.sourceImage_.getState();
+ if (sourceState == ol.ImageState.LOADED) {
+ var width = ol.extent.getWidth(this.targetExtent_) / this.targetResolution_;
+ var height =
+ ol.extent.getHeight(this.targetExtent_) / this.targetResolution_;
+
+ this.canvas_ = ol.reproj.render(width, height, this.sourcePixelRatio_,
+ this.sourceImage_.getResolution(), this.maxSourceExtent_,
+ this.targetResolution_, this.targetExtent_, this.triangulation_, [{
+ extent: this.sourceImage_.getExtent(),
+ image: this.sourceImage_.getImage()
+ }], 0);
+ }
+ this.state = sourceState;
+ this.changed();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Image.prototype.load = function() {
+ if (this.state == ol.ImageState.IDLE) {
+ this.state = ol.ImageState.LOADING;
+ this.changed();
+
+ var sourceState = this.sourceImage_.getState();
+ if (sourceState == ol.ImageState.LOADED ||
+ sourceState == ol.ImageState.ERROR) {
+ this.reproject_();
+ } else {
+ this.sourceListenerKey_ = ol.events.listen(this.sourceImage_,
+ ol.events.EventType.CHANGE, function(e) {
+ var sourceState = this.sourceImage_.getState();
+ if (sourceState == ol.ImageState.LOADED ||
+ sourceState == ol.ImageState.ERROR) {
+ this.unlistenSource_();
+ this.reproject_();
+ }
+ }, this);
+ this.sourceImage_.load();
+ }
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.reproj.Image.prototype.unlistenSource_ = function() {
+ goog.asserts.assert(this.sourceListenerKey_,
+ 'this.sourceListenerKey_ should not be null');
+ ol.events.unlistenByKey(this.sourceListenerKey_);
+ this.sourceListenerKey_ = null;
+};
+
+goog.provide('ol.source.Image');
+goog.provide('ol.source.ImageEvent');
+
+goog.require('goog.asserts');
+goog.require('ol.events.Event');
+goog.require('ol.ImageState');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.proj');
+goog.require('ol.reproj.Image');
+goog.require('ol.source.Source');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for sources providing a single image.
+ *
+ * @constructor
+ * @extends {ol.source.Source}
+ * @param {ol.SourceImageOptions} options Single image source options.
+ * @api
+ */
+ol.source.Image = function(options) {
+
+ ol.source.Source.call(this, {
+ attributions: options.attributions,
+ extent: options.extent,
+ logo: options.logo,
+ projection: options.projection,
+ state: options.state
+ });
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.resolutions_ = options.resolutions !== undefined ?
+ options.resolutions : null;
+ goog.asserts.assert(!this.resolutions_ ||
+ ol.array.isSorted(this.resolutions_,
+ function(a, b) {
+ return b - a;
+ }, true), 'resolutions must be null or sorted in descending order');
+
+
+ /**
+ * @private
+ * @type {ol.reproj.Image}
+ */
+ this.reprojectedImage_ = null;
+
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.reprojectedRevision_ = 0;
+
+};
+ol.inherits(ol.source.Image, ol.source.Source);
+
+
+/**
+ * @return {Array.<number>} Resolutions.
+ */
+ol.source.Image.prototype.getResolutions = function() {
+ return this.resolutions_;
+};
+
+
+/**
+ * @protected
+ * @param {number} resolution Resolution.
+ * @return {number} Resolution.
+ */
+ol.source.Image.prototype.findNearestResolution = function(resolution) {
+ if (this.resolutions_) {
+ var idx = ol.array.linearFindNearest(this.resolutions_, resolution, 0);
+ resolution = this.resolutions_[idx];
+ }
+ return resolution;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.ImageBase} Single image.
+ */
+ol.source.Image.prototype.getImage = function(extent, resolution, pixelRatio, projection) {
+ var sourceProjection = this.getProjection();
+ if (!ol.ENABLE_RASTER_REPROJECTION ||
+ !sourceProjection ||
+ !projection ||
+ ol.proj.equivalent(sourceProjection, projection)) {
+ if (sourceProjection) {
+ projection = sourceProjection;
+ }
+ return this.getImageInternal(extent, resolution, pixelRatio, projection);
+ } else {
+ if (this.reprojectedImage_) {
+ if (this.reprojectedRevision_ == this.getRevision() &&
+ ol.proj.equivalent(
+ this.reprojectedImage_.getProjection(), projection) &&
+ this.reprojectedImage_.getResolution() == resolution &&
+ this.reprojectedImage_.getPixelRatio() == pixelRatio &&
+ ol.extent.equals(this.reprojectedImage_.getExtent(), extent)) {
+ return this.reprojectedImage_;
+ }
+ this.reprojectedImage_.dispose();
+ this.reprojectedImage_ = null;
+ }
+
+ this.reprojectedImage_ = new ol.reproj.Image(
+ sourceProjection, projection, extent, resolution, pixelRatio,
+ function(extent, resolution, pixelRatio) {
+ return this.getImageInternal(extent, resolution,
+ pixelRatio, sourceProjection);
+ }.bind(this));
+ this.reprojectedRevision_ = this.getRevision();
+
+ return this.reprojectedImage_;
+ }
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {ol.ImageBase} Single image.
+ * @protected
+ */
+ol.source.Image.prototype.getImageInternal = goog.abstractMethod;
+
+
+/**
+ * Handle image change events.
+ * @param {ol.events.Event} event Event.
+ * @protected
+ */
+ol.source.Image.prototype.handleImageChange = function(event) {
+ var image = /** @type {ol.Image} */ (event.target);
+ switch (image.getState()) {
+ case ol.ImageState.LOADING:
+ this.dispatchEvent(
+ new ol.source.ImageEvent(ol.source.ImageEventType.IMAGELOADSTART,
+ image));
+ break;
+ case ol.ImageState.LOADED:
+ this.dispatchEvent(
+ new ol.source.ImageEvent(ol.source.ImageEventType.IMAGELOADEND,
+ image));
+ break;
+ case ol.ImageState.ERROR:
+ this.dispatchEvent(
+ new ol.source.ImageEvent(ol.source.ImageEventType.IMAGELOADERROR,
+ image));
+ break;
+ default:
+ // pass
+ }
+};
+
+
+/**
+ * Default image load function for image sources that use ol.Image image
+ * instances.
+ * @param {ol.Image} image Image.
+ * @param {string} src Source.
+ */
+ol.source.Image.defaultImageLoadFunction = function(image, src) {
+ image.getImage().src = src;
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.source.Image} instances are instances of this
+ * type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.source.ImageEvent}
+ * @param {string} type Type.
+ * @param {ol.Image} image The image.
+ */
+ol.source.ImageEvent = function(type, image) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The image related to the event.
+ * @type {ol.Image}
+ * @api
+ */
+ this.image = image;
+
+};
+ol.inherits(ol.source.ImageEvent, ol.events.Event);
+
+
+/**
+ * @enum {string}
+ */
+ol.source.ImageEventType = {
+
+ /**
+ * Triggered when an image starts loading.
+ * @event ol.source.ImageEvent#imageloadstart
+ * @api
+ */
+ IMAGELOADSTART: 'imageloadstart',
+
+ /**
+ * Triggered when an image finishes loading.
+ * @event ol.source.ImageEvent#imageloadend
+ * @api
+ */
+ IMAGELOADEND: 'imageloadend',
+
+ /**
+ * Triggered if image loading results in an error.
+ * @event ol.source.ImageEvent#imageloaderror
+ * @api
+ */
+ IMAGELOADERROR: 'imageloaderror'
+
+};
+
+goog.provide('ol.source.ImageCanvas');
+
+goog.require('ol.ImageCanvas');
+goog.require('ol.extent');
+goog.require('ol.source.Image');
+
+
+/**
+ * @classdesc
+ * Base class for image sources where a canvas element is the image.
+ *
+ * @constructor
+ * @extends {ol.source.Image}
+ * @param {olx.source.ImageCanvasOptions} options Constructor options.
+ * @api
+ */
+ol.source.ImageCanvas = function(options) {
+
+ ol.source.Image.call(this, {
+ attributions: options.attributions,
+ logo: options.logo,
+ projection: options.projection,
+ resolutions: options.resolutions,
+ state: options.state
+ });
+
+ /**
+ * @private
+ * @type {ol.CanvasFunctionType}
+ */
+ this.canvasFunction_ = options.canvasFunction;
+
+ /**
+ * @private
+ * @type {ol.ImageCanvas}
+ */
+ this.canvas_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.ratio_ = options.ratio !== undefined ?
+ options.ratio : 1.5;
+
+};
+ol.inherits(ol.source.ImageCanvas, ol.source.Image);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageCanvas.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
+ resolution = this.findNearestResolution(resolution);
+
+ var canvas = this.canvas_;
+ if (canvas &&
+ this.renderedRevision_ == this.getRevision() &&
+ canvas.getResolution() == resolution &&
+ canvas.getPixelRatio() == pixelRatio &&
+ ol.extent.containsExtent(canvas.getExtent(), extent)) {
+ return canvas;
+ }
+
+ extent = extent.slice();
+ ol.extent.scaleFromCenter(extent, this.ratio_);
+ var width = ol.extent.getWidth(extent) / resolution;
+ var height = ol.extent.getHeight(extent) / resolution;
+ var size = [width * pixelRatio, height * pixelRatio];
+
+ var canvasElement = this.canvasFunction_(
+ extent, resolution, pixelRatio, size, projection);
+ if (canvasElement) {
+ canvas = new ol.ImageCanvas(extent, resolution, pixelRatio,
+ this.getAttributions(), canvasElement);
+ }
+ this.canvas_ = canvas;
+ this.renderedRevision_ = this.getRevision();
+
+ return canvas;
+};
+
+goog.provide('ol.Feature');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.geom.Geometry');
+goog.require('ol.style.Style');
+
+
+/**
+ * @classdesc
+ * A vector object for geographic features with a geometry and other
+ * attribute properties, similar to the features in vector file formats like
+ * GeoJSON.
+ *
+ * Features can be styled individually with `setStyle`; otherwise they use the
+ * style of their vector layer.
+ *
+ * Note that attribute properties are set as {@link ol.Object} properties on
+ * the feature object, so they are observable, and have get/set accessors.
+ *
+ * Typically, a feature has a single geometry property. You can set the
+ * geometry using the `setGeometry` method and get it with `getGeometry`.
+ * It is possible to store more than one geometry on a feature using attribute
+ * properties. By default, the geometry used for rendering is identified by
+ * the property name `geometry`. If you want to use another geometry property
+ * for rendering, use the `setGeometryName` method to change the attribute
+ * property associated with the geometry for the feature. For example:
+ *
+ * ```js
+ * var feature = new ol.Feature({
+ * geometry: new ol.geom.Polygon(polyCoords),
+ * labelPoint: new ol.geom.Point(labelCoords),
+ * name: 'My Polygon'
+ * });
+ *
+ * // get the polygon geometry
+ * var poly = feature.getGeometry();
+ *
+ * // Render the feature as a point using the coordinates from labelPoint
+ * feature.setGeometryName('labelPoint');
+ *
+ * // get the point geometry
+ * var point = feature.getGeometry();
+ * ```
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {ol.geom.Geometry|Object.<string, *>=} opt_geometryOrProperties
+ * You may pass a Geometry object directly, or an object literal
+ * containing properties. If you pass an object literal, you may
+ * include a Geometry associated with a `geometry` key.
+ * @api stable
+ */
+ol.Feature = function(opt_geometryOrProperties) {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {number|string|undefined}
+ */
+ this.id_ = undefined;
+
+ /**
+ * @type {string}
+ * @private
+ */
+ this.geometryName_ = 'geometry';
+
+ /**
+ * User provided style.
+ * @private
+ * @type {ol.style.Style|Array.<ol.style.Style>|
+ * ol.FeatureStyleFunction}
+ */
+ this.style_ = null;
+
+ /**
+ * @private
+ * @type {ol.FeatureStyleFunction|undefined}
+ */
+ this.styleFunction_ = undefined;
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.geometryChangeKey_ = null;
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(this.geometryName_),
+ this.handleGeometryChanged_, this);
+
+ if (opt_geometryOrProperties !== undefined) {
+ if (opt_geometryOrProperties instanceof ol.geom.Geometry ||
+ !opt_geometryOrProperties) {
+ var geometry = opt_geometryOrProperties;
+ this.setGeometry(geometry);
+ } else {
+ goog.asserts.assert(goog.isObject(opt_geometryOrProperties),
+ 'opt_geometryOrProperties should be an Object');
+ /** @type {Object.<string, *>} */
+ var properties = opt_geometryOrProperties;
+ this.setProperties(properties);
+ }
+ }
+};
+ol.inherits(ol.Feature, ol.Object);
+
+
+/**
+ * Clone this feature. If the original feature has a geometry it
+ * is also cloned. The feature id is not set in the clone.
+ * @return {ol.Feature} The clone.
+ * @api stable
+ */
+ol.Feature.prototype.clone = function() {
+ var clone = new ol.Feature(this.getProperties());
+ clone.setGeometryName(this.getGeometryName());
+ var geometry = this.getGeometry();
+ if (geometry) {
+ clone.setGeometry(geometry.clone());
+ }
+ var style = this.getStyle();
+ if (style) {
+ clone.setStyle(style);
+ }
+ return clone;
+};
+
+
+/**
+ * Get the feature's default geometry. A feature may have any number of named
+ * geometries. The "default" geometry (the one that is rendered by default) is
+ * set when calling {@link ol.Feature#setGeometry}.
+ * @return {ol.geom.Geometry|undefined} The default geometry for the feature.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.getGeometry = function() {
+ return /** @type {ol.geom.Geometry|undefined} */ (
+ this.get(this.geometryName_));
+};
+
+
+/**
+ * Get the feature identifier. This is a stable identifier for the feature and
+ * is either set when reading data from a remote source or set explicitly by
+ * calling {@link ol.Feature#setId}.
+ * @return {number|string|undefined} Id.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.getId = function() {
+ return this.id_;
+};
+
+
+/**
+ * Get the name of the feature's default geometry. By default, the default
+ * geometry is named `geometry`.
+ * @return {string} Get the property name associated with the default geometry
+ * for this feature.
+ * @api stable
+ */
+ol.Feature.prototype.getGeometryName = function() {
+ return this.geometryName_;
+};
+
+
+/**
+ * Get the feature's style. This return for this method depends on what was
+ * provided to the {@link ol.Feature#setStyle} method.
+ * @return {ol.style.Style|Array.<ol.style.Style>|
+ * ol.FeatureStyleFunction} The feature style.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.getStyle = function() {
+ return this.style_;
+};
+
+
+/**
+ * Get the feature's style function.
+ * @return {ol.FeatureStyleFunction|undefined} Return a function
+ * representing the current style of this feature.
+ * @api stable
+ */
+ol.Feature.prototype.getStyleFunction = function() {
+ return this.styleFunction_;
+};
+
+
+/**
+ * @private
+ */
+ol.Feature.prototype.handleGeometryChange_ = function() {
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.Feature.prototype.handleGeometryChanged_ = function() {
+ if (this.geometryChangeKey_) {
+ ol.events.unlistenByKey(this.geometryChangeKey_);
+ this.geometryChangeKey_ = null;
+ }
+ var geometry = this.getGeometry();
+ if (geometry) {
+ this.geometryChangeKey_ = ol.events.listen(geometry,
+ ol.events.EventType.CHANGE, this.handleGeometryChange_, this);
+ }
+ this.changed();
+};
+
+
+/**
+ * Set the default geometry for the feature. This will update the property
+ * with the name returned by {@link ol.Feature#getGeometryName}.
+ * @param {ol.geom.Geometry|undefined} geometry The new geometry.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.setGeometry = function(geometry) {
+ this.set(this.geometryName_, geometry);
+};
+
+
+/**
+ * Set the style for the feature. This can be a single style object, an array
+ * of styles, or a function that takes a resolution and returns an array of
+ * styles. If it is `null` the feature has no style (a `null` style).
+ * @param {ol.style.Style|Array.<ol.style.Style>|
+ * ol.FeatureStyleFunction} style Style for this feature.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.setStyle = function(style) {
+ this.style_ = style;
+ this.styleFunction_ = !style ?
+ undefined : ol.Feature.createStyleFunction(style);
+ this.changed();
+};
+
+
+/**
+ * Set the feature id. The feature id is considered stable and may be used when
+ * requesting features or comparing identifiers returned from a remote source.
+ * The feature id can be used with the {@link ol.source.Vector#getFeatureById}
+ * method.
+ * @param {number|string|undefined} id The feature id.
+ * @api stable
+ * @observable
+ */
+ol.Feature.prototype.setId = function(id) {
+ this.id_ = id;
+ this.changed();
+};
+
+
+/**
+ * Set the property name to be used when getting the feature's default geometry.
+ * When calling {@link ol.Feature#getGeometry}, the value of the property with
+ * this name will be returned.
+ * @param {string} name The property name of the default geometry.
+ * @api stable
+ */
+ol.Feature.prototype.setGeometryName = function(name) {
+ ol.events.unlisten(
+ this, ol.Object.getChangeEventType(this.geometryName_),
+ this.handleGeometryChanged_, this);
+ this.geometryName_ = name;
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(this.geometryName_),
+ this.handleGeometryChanged_, this);
+ this.handleGeometryChanged_();
+};
+
+
+/**
+ * Convert the provided object into a feature style function. Functions passed
+ * through unchanged. Arrays of ol.style.Style or single style objects wrapped
+ * in a new feature style function.
+ * @param {ol.FeatureStyleFunction|!Array.<ol.style.Style>|!ol.style.Style} obj
+ * A feature style function, a single style, or an array of styles.
+ * @return {ol.FeatureStyleFunction} A style function.
+ */
+ol.Feature.createStyleFunction = function(obj) {
+ var styleFunction;
+
+ if (typeof obj === 'function') {
+ styleFunction = obj;
+ } else {
+ /**
+ * @type {Array.<ol.style.Style>}
+ */
+ var styles;
+ if (Array.isArray(obj)) {
+ styles = obj;
+ } else {
+ goog.asserts.assertInstanceof(obj, ol.style.Style,
+ 'obj should be an ol.style.Style');
+ styles = [obj];
+ }
+ styleFunction = function() {
+ return styles;
+ };
+ }
+ return styleFunction;
+};
+
+goog.provide('ol.VectorTile');
+
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.dom');
+goog.require('ol.proj.Projection');
+
+
+/**
+ * @constructor
+ * @extends {ol.Tile}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileState} state State.
+ * @param {string} src Data source url.
+ * @param {ol.format.Feature} format Feature format.
+ * @param {ol.TileLoadFunctionType} tileLoadFunction Tile load function.
+ */
+ol.VectorTile = function(tileCoord, state, src, format, tileLoadFunction) {
+
+ ol.Tile.call(this, tileCoord, state);
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D();
+
+ /**
+ * @private
+ * @type {ol.format.Feature}
+ */
+ this.format_ = format;
+
+ /**
+ * @private
+ * @type {Array.<ol.Feature>}
+ */
+ this.features_ = null;
+
+ /**
+ * @private
+ * @type {ol.FeatureLoader}
+ */
+ this.loader_;
+
+ /**
+ * Data projection
+ * @private
+ * @type {ol.proj.Projection}
+ */
+ this.projection_;
+
+ /**
+ * @private
+ * @type {ol.TileReplayState}
+ */
+ this.replayState_ = {
+ dirty: false,
+ renderedRenderOrder: null,
+ renderedRevision: -1,
+ renderedTileRevision: -1,
+ replayGroup: null,
+ skippedFeatures: []
+ };
+
+ /**
+ * @private
+ * @type {ol.TileLoadFunctionType}
+ */
+ this.tileLoadFunction_ = tileLoadFunction;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.url_ = src;
+
+};
+ol.inherits(ol.VectorTile, ol.Tile);
+
+
+/**
+ * @return {CanvasRenderingContext2D} The rendering context.
+ */
+ol.VectorTile.prototype.getContext = function() {
+ return this.context_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.VectorTile.prototype.getImage = function() {
+ return this.replayState_.renderedTileRevision == -1 ?
+ null : this.context_.canvas;
+};
+
+
+/**
+ * Get the feature format assigned for reading this tile's features.
+ * @return {ol.format.Feature} Feature format.
+ * @api
+ */
+ol.VectorTile.prototype.getFormat = function() {
+ return this.format_;
+};
+
+
+/**
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.VectorTile.prototype.getFeatures = function() {
+ return this.features_;
+};
+
+
+/**
+ * @return {ol.TileReplayState} The replay state.
+ */
+ol.VectorTile.prototype.getReplayState = function() {
+ return this.replayState_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.VectorTile.prototype.getKey = function() {
+ return this.url_;
+};
+
+
+/**
+ * @return {ol.proj.Projection} Feature projection.
+ */
+ol.VectorTile.prototype.getProjection = function() {
+ return this.projection_;
+};
+
+
+/**
+ * Load the tile.
+ */
+ol.VectorTile.prototype.load = function() {
+ if (this.state == ol.TileState.IDLE) {
+ this.setState(ol.TileState.LOADING);
+ this.tileLoadFunction_(this, this.url_);
+ this.loader_(null, NaN, null);
+ }
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features.
+ * @api
+ */
+ol.VectorTile.prototype.setFeatures = function(features) {
+ this.features_ = features;
+ this.setState(ol.TileState.LOADED);
+};
+
+
+/**
+ * Set the projection of the features that were added with {@link #setFeatures}.
+ * @param {ol.proj.Projection} projection Feature projection.
+ * @api
+ */
+ol.VectorTile.prototype.setProjection = function(projection) {
+ this.projection_ = projection;
+};
+
+
+/**
+ * @param {ol.TileState} tileState Tile state.
+ */
+ol.VectorTile.prototype.setState = function(tileState) {
+ this.state = tileState;
+ this.changed();
+};
+
+
+/**
+ * Set the feature loader for reading this tile's features.
+ * @param {ol.FeatureLoader} loader Feature loader.
+ * @api
+ */
+ol.VectorTile.prototype.setLoader = function(loader) {
+ this.loader_ = loader;
+};
+
+goog.provide('ol.format.FormatType');
+
+
+/**
+ * @enum {string}
+ */
+ol.format.FormatType = {
+ ARRAY_BUFFER: 'arraybuffer',
+ JSON: 'json',
+ TEXT: 'text',
+ XML: 'xml'
+};
+
+goog.provide('ol.xml');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+
+
+/**
+ * This document should be used when creating nodes for XML serializations. This
+ * document is also used by {@link ol.xml.createElementNS} and
+ * {@link ol.xml.setAttributeNS}
+ * @const
+ * @type {Document}
+ */
+ol.xml.DOCUMENT = document.implementation.createDocument('', '', null);
+
+
+/**
+ * @param {string} namespaceURI Namespace URI.
+ * @param {string} qualifiedName Qualified name.
+ * @return {Node} Node.
+ */
+ol.xml.createElementNS = function(namespaceURI, qualifiedName) {
+ return ol.xml.DOCUMENT.createElementNS(namespaceURI, qualifiedName);
+};
+
+
+/**
+ * Recursively grab all text content of child nodes into a single string.
+ * @param {Node} node Node.
+ * @param {boolean} normalizeWhitespace Normalize whitespace: remove all line
+ * breaks.
+ * @return {string} All text content.
+ * @api
+ */
+ol.xml.getAllTextContent = function(node, normalizeWhitespace) {
+ return ol.xml.getAllTextContent_(node, normalizeWhitespace, []).join('');
+};
+
+
+/**
+ * Recursively grab all text content of child nodes into a single string.
+ * @param {Node} node Node.
+ * @param {boolean} normalizeWhitespace Normalize whitespace: remove all line
+ * breaks.
+ * @param {Array.<string>} accumulator Accumulator.
+ * @private
+ * @return {Array.<string>} Accumulator.
+ */
+ol.xml.getAllTextContent_ = function(node, normalizeWhitespace, accumulator) {
+ if (node.nodeType == Node.CDATA_SECTION_NODE ||
+ node.nodeType == Node.TEXT_NODE) {
+ if (normalizeWhitespace) {
+ accumulator.push(String(node.nodeValue).replace(/(\r\n|\r|\n)/g, ''));
+ } else {
+ accumulator.push(node.nodeValue);
+ }
+ } else {
+ var n;
+ for (n = node.firstChild; n; n = n.nextSibling) {
+ ol.xml.getAllTextContent_(n, normalizeWhitespace, accumulator);
+ }
+ }
+ return accumulator;
+};
+
+
+/**
+ * @param {?} value Value.
+ * @return {boolean} Is document.
+ */
+ol.xml.isDocument = function(value) {
+ return value instanceof Document;
+};
+
+
+/**
+ * @param {?} value Value.
+ * @return {boolean} Is node.
+ */
+ol.xml.isNode = function(value) {
+ return value instanceof Node;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {?string} namespaceURI Namespace URI.
+ * @param {string} name Attribute name.
+ * @return {string} Value
+ */
+ol.xml.getAttributeNS = function(node, namespaceURI, name) {
+ return node.getAttributeNS(namespaceURI, name) || '';
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {?string} namespaceURI Namespace URI.
+ * @param {string} name Attribute name.
+ * @param {string|number} value Value.
+ */
+ol.xml.setAttributeNS = function(node, namespaceURI, name, value) {
+ node.setAttributeNS(namespaceURI, name, value);
+};
+
+
+/**
+ * Parse an XML string to an XML Document.
+ * @param {string} xml XML.
+ * @return {Document} Document.
+ * @api
+ */
+ol.xml.parse = function(xml) {
+ return new DOMParser().parseFromString(xml, 'application/xml');
+};
+
+
+/**
+ * Make an array extender function for extending the array at the top of the
+ * object stack.
+ * @param {function(this: T, Node, Array.<*>): (Array.<*>|undefined)}
+ * valueReader Value reader.
+ * @param {T=} opt_this The object to use as `this` in `valueReader`.
+ * @return {ol.XmlParser} Parser.
+ * @template T
+ */
+ol.xml.makeArrayExtender = function(valueReader, opt_this) {
+ return (
+ /**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ */
+ function(node, objectStack) {
+ var value = valueReader.call(opt_this, node, objectStack);
+ if (value !== undefined) {
+ goog.asserts.assert(Array.isArray(value),
+ 'valueReader function is expected to return an array of values');
+ var array = /** @type {Array.<*>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(array),
+ 'objectStack is supposed to be an array of arrays');
+ ol.array.extend(array, value);
+ }
+ });
+};
+
+
+/**
+ * Make an array pusher function for pushing to the array at the top of the
+ * object stack.
+ * @param {function(this: T, Node, Array.<*>): *} valueReader Value reader.
+ * @param {T=} opt_this The object to use as `this` in `valueReader`.
+ * @return {ol.XmlParser} Parser.
+ * @template T
+ */
+ol.xml.makeArrayPusher = function(valueReader, opt_this) {
+ return (
+ /**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ */
+ function(node, objectStack) {
+ var value = valueReader.call(opt_this !== undefined ? opt_this : this,
+ node, objectStack);
+ if (value !== undefined) {
+ var array = objectStack[objectStack.length - 1];
+ goog.asserts.assert(Array.isArray(array),
+ 'objectStack is supposed to be an array of arrays');
+ array.push(value);
+ }
+ });
+};
+
+
+/**
+ * Make an object stack replacer function for replacing the object at the
+ * top of the stack.
+ * @param {function(this: T, Node, Array.<*>): *} valueReader Value reader.
+ * @param {T=} opt_this The object to use as `this` in `valueReader`.
+ * @return {ol.XmlParser} Parser.
+ * @template T
+ */
+ol.xml.makeReplacer = function(valueReader, opt_this) {
+ return (
+ /**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ */
+ function(node, objectStack) {
+ var value = valueReader.call(opt_this !== undefined ? opt_this : this,
+ node, objectStack);
+ if (value !== undefined) {
+ objectStack[objectStack.length - 1] = value;
+ }
+ });
+};
+
+
+/**
+ * Make an object property pusher function for adding a property to the
+ * object at the top of the stack.
+ * @param {function(this: T, Node, Array.<*>): *} valueReader Value reader.
+ * @param {string=} opt_property Property.
+ * @param {T=} opt_this The object to use as `this` in `valueReader`.
+ * @return {ol.XmlParser} Parser.
+ * @template T
+ */
+ol.xml.makeObjectPropertyPusher = function(valueReader, opt_property, opt_this) {
+ goog.asserts.assert(valueReader !== undefined,
+ 'undefined valueReader, expected function(this: T, Node, Array.<*>)');
+ return (
+ /**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ */
+ function(node, objectStack) {
+ var value = valueReader.call(opt_this !== undefined ? opt_this : this,
+ node, objectStack);
+ if (value !== undefined) {
+ var object = /** @type {Object} */
+ (objectStack[objectStack.length - 1]);
+ var property = opt_property !== undefined ?
+ opt_property : node.localName;
+ goog.asserts.assert(goog.isObject(object),
+ 'entity from stack was not an object');
+ var array;
+ if (property in object) {
+ array = object[property];
+ } else {
+ array = object[property] = [];
+ }
+ array.push(value);
+ }
+ });
+};
+
+
+/**
+ * Make an object property setter function.
+ * @param {function(this: T, Node, Array.<*>): *} valueReader Value reader.
+ * @param {string=} opt_property Property.
+ * @param {T=} opt_this The object to use as `this` in `valueReader`.
+ * @return {ol.XmlParser} Parser.
+ * @template T
+ */
+ol.xml.makeObjectPropertySetter = function(valueReader, opt_property, opt_this) {
+ goog.asserts.assert(valueReader !== undefined,
+ 'undefined valueReader, expected function(this: T, Node, Array.<*>)');
+ return (
+ /**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ */
+ function(node, objectStack) {
+ var value = valueReader.call(opt_this !== undefined ? opt_this : this,
+ node, objectStack);
+ if (value !== undefined) {
+ var object = /** @type {Object} */
+ (objectStack[objectStack.length - 1]);
+ var property = opt_property !== undefined ?
+ opt_property : node.localName;
+ goog.asserts.assert(goog.isObject(object),
+ 'entity from stack was not an object');
+ object[property] = value;
+ }
+ });
+};
+
+
+/**
+ * Create a serializer that appends nodes written by its `nodeWriter` to its
+ * designated parent. The parent is the `node` of the
+ * {@link ol.XmlNodeStackItem} at the top of the `objectStack`.
+ * @param {function(this: T, Node, V, Array.<*>)}
+ * nodeWriter Node writer.
+ * @param {T=} opt_this The object to use as `this` in `nodeWriter`.
+ * @return {ol.XmlSerializer} Serializer.
+ * @template T, V
+ */
+ol.xml.makeChildAppender = function(nodeWriter, opt_this) {
+ return function(node, value, objectStack) {
+ nodeWriter.call(opt_this !== undefined ? opt_this : this,
+ node, value, objectStack);
+ var parent = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(parent),
+ 'entity from stack was not an object');
+ var parentNode = parent.node;
+ goog.asserts.assert(ol.xml.isNode(parentNode) ||
+ ol.xml.isDocument(parentNode),
+ 'expected parentNode %s to be a Node or a Document', parentNode);
+ parentNode.appendChild(node);
+ };
+};
+
+
+/**
+ * Create a serializer that calls the provided `nodeWriter` from
+ * {@link ol.xml.serialize}. This can be used by the parent writer to have the
+ * 'nodeWriter' called with an array of values when the `nodeWriter` was
+ * designed to serialize a single item. An example would be a LineString
+ * geometry writer, which could be reused for writing MultiLineString
+ * geometries.
+ * @param {function(this: T, Node, V, Array.<*>)}
+ * nodeWriter Node writer.
+ * @param {T=} opt_this The object to use as `this` in `nodeWriter`.
+ * @return {ol.XmlSerializer} Serializer.
+ * @template T, V
+ */
+ol.xml.makeArraySerializer = function(nodeWriter, opt_this) {
+ var serializersNS, nodeFactory;
+ return function(node, value, objectStack) {
+ if (serializersNS === undefined) {
+ serializersNS = {};
+ var serializers = {};
+ serializers[node.localName] = nodeWriter;
+ serializersNS[node.namespaceURI] = serializers;
+ nodeFactory = ol.xml.makeSimpleNodeFactory(node.localName);
+ }
+ ol.xml.serialize(serializersNS, nodeFactory, value, objectStack);
+ };
+};
+
+
+/**
+ * Create a node factory which can use the `opt_keys` passed to
+ * {@link ol.xml.serialize} or {@link ol.xml.pushSerializeAndPop} as node names,
+ * or a fixed node name. The namespace of the created nodes can either be fixed,
+ * or the parent namespace will be used.
+ * @param {string=} opt_nodeName Fixed node name which will be used for all
+ * created nodes. If not provided, the 3rd argument to the resulting node
+ * factory needs to be provided and will be the nodeName.
+ * @param {string=} opt_namespaceURI Fixed namespace URI which will be used for
+ * all created nodes. If not provided, the namespace of the parent node will
+ * be used.
+ * @return {function(*, Array.<*>, string=): (Node|undefined)} Node factory.
+ */
+ol.xml.makeSimpleNodeFactory = function(opt_nodeName, opt_namespaceURI) {
+ var fixedNodeName = opt_nodeName;
+ return (
+ /**
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node} Node.
+ */
+ function(value, objectStack, opt_nodeName) {
+ var context = objectStack[objectStack.length - 1];
+ var node = context.node;
+ goog.asserts.assert(ol.xml.isNode(node) || ol.xml.isDocument(node),
+ 'expected node %s to be a Node or a Document', node);
+ var nodeName = fixedNodeName;
+ if (nodeName === undefined) {
+ nodeName = opt_nodeName;
+ }
+ var namespaceURI = opt_namespaceURI;
+ if (opt_namespaceURI === undefined) {
+ namespaceURI = node.namespaceURI;
+ }
+ goog.asserts.assert(nodeName !== undefined, 'nodeName was undefined');
+ return ol.xml.createElementNS(namespaceURI, nodeName);
+ }
+ );
+};
+
+
+/**
+ * A node factory that creates a node using the parent's `namespaceURI` and the
+ * `nodeName` passed by {@link ol.xml.serialize} or
+ * {@link ol.xml.pushSerializeAndPop} to the node factory.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ */
+ol.xml.OBJECT_PROPERTY_NODE_FACTORY = ol.xml.makeSimpleNodeFactory();
+
+
+/**
+ * Create an array of `values` to be used with {@link ol.xml.serialize} or
+ * {@link ol.xml.pushSerializeAndPop}, where `orderedKeys` has to be provided as
+ * `opt_key` argument.
+ * @param {Object.<string, V>} object Key-value pairs for the sequence. Keys can
+ * be a subset of the `orderedKeys`.
+ * @param {Array.<string>} orderedKeys Keys in the order of the sequence.
+ * @return {Array.<V>} Values in the order of the sequence. The resulting array
+ * has the same length as the `orderedKeys` array. Values that are not
+ * present in `object` will be `undefined` in the resulting array.
+ * @template V
+ */
+ol.xml.makeSequence = function(object, orderedKeys) {
+ var length = orderedKeys.length;
+ var sequence = new Array(length);
+ for (var i = 0; i < length; ++i) {
+ sequence[i] = object[orderedKeys[i]];
+ }
+ return sequence;
+};
+
+
+/**
+ * Create a namespaced structure, using the same values for each namespace.
+ * This can be used as a starting point for versioned parsers, when only a few
+ * values are version specific.
+ * @param {Array.<string>} namespaceURIs Namespace URIs.
+ * @param {T} structure Structure.
+ * @param {Object.<string, T>=} opt_structureNS Namespaced structure to add to.
+ * @return {Object.<string, T>} Namespaced structure.
+ * @template T
+ */
+ol.xml.makeStructureNS = function(namespaceURIs, structure, opt_structureNS) {
+ /**
+ * @type {Object.<string, *>}
+ */
+ var structureNS = opt_structureNS !== undefined ? opt_structureNS : {};
+ var i, ii;
+ for (i = 0, ii = namespaceURIs.length; i < ii; ++i) {
+ structureNS[namespaceURIs[i]] = structure;
+ }
+ return structureNS;
+};
+
+
+/**
+ * Parse a node using the parsers and object stack.
+ * @param {Object.<string, Object.<string, ol.XmlParser>>} parsersNS
+ * Parsers by namespace.
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {*=} opt_this The object to use as `this`.
+ */
+ol.xml.parseNode = function(parsersNS, node, objectStack, opt_this) {
+ var n;
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ var parsers = parsersNS[n.namespaceURI];
+ if (parsers !== undefined) {
+ var parser = parsers[n.localName];
+ if (parser !== undefined) {
+ parser.call(opt_this, n, objectStack);
+ }
+ }
+ }
+};
+
+
+/**
+ * Push an object on top of the stack, parse and return the popped object.
+ * @param {T} object Object.
+ * @param {Object.<string, Object.<string, ol.XmlParser>>} parsersNS
+ * Parsers by namespace.
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {*=} opt_this The object to use as `this`.
+ * @return {T} Object.
+ * @template T
+ */
+ol.xml.pushParseAndPop = function(
+ object, parsersNS, node, objectStack, opt_this) {
+ objectStack.push(object);
+ ol.xml.parseNode(parsersNS, node, objectStack, opt_this);
+ return objectStack.pop();
+};
+
+
+/**
+ * Walk through an array of `values` and call a serializer for each value.
+ * @param {Object.<string, Object.<string, ol.XmlSerializer>>} serializersNS
+ * Namespaced serializers.
+ * @param {function(this: T, *, Array.<*>, (string|undefined)): (Node|undefined)} nodeFactory
+ * Node factory. The `nodeFactory` creates the node whose namespace and name
+ * will be used to choose a node writer from `serializersNS`. This
+ * separation allows us to decide what kind of node to create, depending on
+ * the value we want to serialize. An example for this would be different
+ * geometry writers based on the geometry type.
+ * @param {Array.<*>} values Values to serialize. An example would be an array
+ * of {@link ol.Feature} instances.
+ * @param {Array.<*>} objectStack Node stack.
+ * @param {Array.<string>=} opt_keys Keys of the `values`. Will be passed to the
+ * `nodeFactory`. This is used for serializing object literals where the
+ * node name relates to the property key. The array length of `opt_keys` has
+ * to match the length of `values`. For serializing a sequence, `opt_keys`
+ * determines the order of the sequence.
+ * @param {T=} opt_this The object to use as `this` for the node factory and
+ * serializers.
+ * @template T
+ */
+ol.xml.serialize = function(
+ serializersNS, nodeFactory, values, objectStack, opt_keys, opt_this) {
+ var length = (opt_keys !== undefined ? opt_keys : values).length;
+ var value, node;
+ for (var i = 0; i < length; ++i) {
+ value = values[i];
+ if (value !== undefined) {
+ node = nodeFactory.call(opt_this, value, objectStack,
+ opt_keys !== undefined ? opt_keys[i] : undefined);
+ if (node !== undefined) {
+ serializersNS[node.namespaceURI][node.localName]
+ .call(opt_this, node, value, objectStack);
+ }
+ }
+ }
+};
+
+
+/**
+ * @param {O} object Object.
+ * @param {Object.<string, Object.<string, ol.XmlSerializer>>} serializersNS
+ * Namespaced serializers.
+ * @param {function(this: T, *, Array.<*>, (string|undefined)): (Node|undefined)} nodeFactory
+ * Node factory. The `nodeFactory` creates the node whose namespace and name
+ * will be used to choose a node writer from `serializersNS`. This
+ * separation allows us to decide what kind of node to create, depending on
+ * the value we want to serialize. An example for this would be different
+ * geometry writers based on the geometry type.
+ * @param {Array.<*>} values Values to serialize. An example would be an array
+ * of {@link ol.Feature} instances.
+ * @param {Array.<*>} objectStack Node stack.
+ * @param {Array.<string>=} opt_keys Keys of the `values`. Will be passed to the
+ * `nodeFactory`. This is used for serializing object literals where the
+ * node name relates to the property key. The array length of `opt_keys` has
+ * to match the length of `values`. For serializing a sequence, `opt_keys`
+ * determines the order of the sequence.
+ * @param {T=} opt_this The object to use as `this` for the node factory and
+ * serializers.
+ * @return {O|undefined} Object.
+ * @template O, T
+ */
+ol.xml.pushSerializeAndPop = function(object,
+ serializersNS, nodeFactory, values, objectStack, opt_keys, opt_this) {
+ objectStack.push(object);
+ ol.xml.serialize(
+ serializersNS, nodeFactory, values, objectStack, opt_keys, opt_this);
+ return objectStack.pop();
+};
+
+goog.provide('ol.featureloader');
+
+goog.require('goog.asserts');
+goog.require('ol.TileState');
+goog.require('ol.VectorTile');
+goog.require('ol.format.FormatType');
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+goog.require('ol.xml');
+
+
+/**
+ * @param {string|ol.FeatureUrlFunction} url Feature URL service.
+ * @param {ol.format.Feature} format Feature format.
+ * @param {function(this:ol.VectorTile, Array.<ol.Feature>, ol.proj.Projection)|function(this:ol.source.Vector, Array.<ol.Feature>)} success
+ * Function called with the loaded features and optionally with the data
+ * projection. Called with the vector tile or source as `this`.
+ * @param {function(this:ol.VectorTile)|function(this:ol.source.Vector)} failure
+ * Function called when loading failed. Called with the vector tile or
+ * source as `this`.
+ * @return {ol.FeatureLoader} The feature loader.
+ */
+ol.featureloader.loadFeaturesXhr = function(url, format, success, failure) {
+ return (
+ /**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {ol.proj.Projection} projection Projection.
+ * @this {ol.source.Vector|ol.VectorTile}
+ */
+ function(extent, resolution, projection) {
+ var xhr = new XMLHttpRequest();
+ xhr.open('GET',
+ typeof url === 'function' ? url(extent, resolution, projection) : url,
+ true);
+ if (format.getType() == ol.format.FormatType.ARRAY_BUFFER) {
+ xhr.responseType = 'arraybuffer';
+ }
+ /**
+ * @param {Event} event Event.
+ * @private
+ */
+ xhr.onload = function(event) {
+ if (xhr.status >= 200 && xhr.status < 300) {
+ var type = format.getType();
+ /** @type {Document|Node|Object|string|undefined} */
+ var source;
+ if (type == ol.format.FormatType.JSON ||
+ type == ol.format.FormatType.TEXT) {
+ source = xhr.responseText;
+ } else if (type == ol.format.FormatType.XML) {
+ source = xhr.responseXML;
+ if (!source) {
+ source = ol.xml.parse(xhr.responseText);
+ }
+ } else if (type == ol.format.FormatType.ARRAY_BUFFER) {
+ source = /** @type {ArrayBuffer} */ (xhr.response);
+ } else {
+ goog.asserts.fail('unexpected format type');
+ }
+ if (source) {
+ success.call(this, format.readFeatures(source,
+ {featureProjection: projection}),
+ format.readProjection(source));
+ } else {
+ goog.asserts.fail('undefined or null source');
+ }
+ } else {
+ failure.call(this);
+ }
+ }.bind(this);
+ xhr.send();
+ });
+};
+
+
+/**
+ * Create an XHR feature loader for a `url` and `format`. The feature loader
+ * loads features (with XHR), parses the features, and adds them to the
+ * vector tile.
+ * @param {string|ol.FeatureUrlFunction} url Feature URL service.
+ * @param {ol.format.Feature} format Feature format.
+ * @return {ol.FeatureLoader} The feature loader.
+ * @api
+ */
+ol.featureloader.tile = function(url, format) {
+ return ol.featureloader.loadFeaturesXhr(url, format,
+ /**
+ * @param {Array.<ol.Feature>} features The loaded features.
+ * @param {ol.proj.Projection} dataProjection Data projection.
+ * @this {ol.VectorTile}
+ */
+ function(features, dataProjection) {
+ this.setProjection(dataProjection);
+ this.setFeatures(features);
+ },
+ /**
+ * @this {ol.VectorTile}
+ */
+ function() {
+ this.setState(ol.TileState.ERROR);
+ });
+};
+
+
+/**
+ * Create an XHR feature loader for a `url` and `format`. The feature loader
+ * loads features (with XHR), parses the features, and adds them to the
+ * vector source.
+ * @param {string|ol.FeatureUrlFunction} url Feature URL service.
+ * @param {ol.format.Feature} format Feature format.
+ * @return {ol.FeatureLoader} The feature loader.
+ * @api
+ */
+ol.featureloader.xhr = function(url, format) {
+ return ol.featureloader.loadFeaturesXhr(url, format,
+ /**
+ * @param {Array.<ol.Feature>} features The loaded features.
+ * @param {ol.proj.Projection} dataProjection Data projection.
+ * @this {ol.source.Vector}
+ */
+ function(features, dataProjection) {
+ this.addFeatures(features);
+ }, /* FIXME handle error */ ol.nullFunction);
+};
+
+goog.provide('ol.loadingstrategy');
+
+
+/**
+ * Strategy function for loading all features with a single request.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @return {Array.<ol.Extent>} Extents.
+ * @api
+ */
+ol.loadingstrategy.all = function(extent, resolution) {
+ return [[-Infinity, -Infinity, Infinity, Infinity]];
+};
+
+
+/**
+ * Strategy function for loading features based on the view's extent and
+ * resolution.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @return {Array.<ol.Extent>} Extents.
+ * @api
+ */
+ol.loadingstrategy.bbox = function(extent, resolution) {
+ return [extent];
+};
+
+
+/**
+ * Creates a strategy function for loading features based on a tile grid.
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @return {function(ol.Extent, number): Array.<ol.Extent>} Loading strategy.
+ * @api
+ */
+ol.loadingstrategy.tile = function(tileGrid) {
+ return (
+ /**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @return {Array.<ol.Extent>} Extents.
+ */
+ function(extent, resolution) {
+ var z = tileGrid.getZForResolution(resolution);
+ var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
+ /** @type {Array.<ol.Extent>} */
+ var extents = [];
+ /** @type {ol.TileCoord} */
+ var tileCoord = [z, 0, 0];
+ for (tileCoord[1] = tileRange.minX; tileCoord[1] <= tileRange.maxX;
+ ++tileCoord[1]) {
+ for (tileCoord[2] = tileRange.minY; tileCoord[2] <= tileRange.maxY;
+ ++tileCoord[2]) {
+ extents.push(tileGrid.getTileCoordExtent(tileCoord));
+ }
+ }
+ return extents;
+ });
+};
+
+goog.provide('ol.ext.rbush');
+/** @typedef {function(*)} */
+ol.ext.rbush;
+(function() {
+var exports = {};
+var module = {exports: exports};
+var define;
+/**
+ * @fileoverview
+ * @suppress {accessControls, ambiguousFunctionDecl, checkDebuggerStatement, checkRegExp, checkTypes, checkVars, const, constantProperty, deprecated, duplicate, es5Strict, fileoverviewTags, missingProperties, nonStandardJsDocs, strictModuleDepCheck, suspiciousCode, undefinedNames, undefinedVars, unknownDefines, uselessCode, visibility}
+ */
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.rbush = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+'use strict';
+
+module.exports = rbush;
+
+var quickselect = _dereq_('quickselect');
+
+function rbush(maxEntries, format) {
+ if (!(this instanceof rbush)) return new rbush(maxEntries, format);
+
+ // max entries in a node is 9 by default; min node fill is 40% for best performance
+ this._maxEntries = Math.max(4, maxEntries || 9);
+ this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
+
+ if (format) {
+ this._initFormat(format);
+ }
+
+ this.clear();
+}
+
+rbush.prototype = {
+
+ all: function () {
+ return this._all(this.data, []);
+ },
+
+ search: function (bbox) {
+
+ var node = this.data,
+ result = [],
+ toBBox = this.toBBox;
+
+ if (!intersects(bbox, node)) return result;
+
+ var nodesToSearch = [],
+ i, len, child, childBBox;
+
+ while (node) {
+ for (i = 0, len = node.children.length; i < len; i++) {
+
+ child = node.children[i];
+ childBBox = node.leaf ? toBBox(child) : child;
+
+ if (intersects(bbox, childBBox)) {
+ if (node.leaf) result.push(child);
+ else if (contains(bbox, childBBox)) this._all(child, result);
+ else nodesToSearch.push(child);
+ }
+ }
+ node = nodesToSearch.pop();
+ }
+
+ return result;
+ },
+
+ collides: function (bbox) {
+
+ var node = this.data,
+ toBBox = this.toBBox;
+
+ if (!intersects(bbox, node)) return false;
+
+ var nodesToSearch = [],
+ i, len, child, childBBox;
+
+ while (node) {
+ for (i = 0, len = node.children.length; i < len; i++) {
+
+ child = node.children[i];
+ childBBox = node.leaf ? toBBox(child) : child;
+
+ if (intersects(bbox, childBBox)) {
+ if (node.leaf || contains(bbox, childBBox)) return true;
+ nodesToSearch.push(child);
+ }
+ }
+ node = nodesToSearch.pop();
+ }
+
+ return false;
+ },
+
+ load: function (data) {
+ if (!(data && data.length)) return this;
+
+ if (data.length < this._minEntries) {
+ for (var i = 0, len = data.length; i < len; i++) {
+ this.insert(data[i]);
+ }
+ return this;
+ }
+
+ // recursively build the tree with the given data from stratch using OMT algorithm
+ var node = this._build(data.slice(), 0, data.length - 1, 0);
+
+ if (!this.data.children.length) {
+ // save as is if tree is empty
+ this.data = node;
+
+ } else if (this.data.height === node.height) {
+ // split root if trees have the same height
+ this._splitRoot(this.data, node);
+
+ } else {
+ if (this.data.height < node.height) {
+ // swap trees if inserted one is bigger
+ var tmpNode = this.data;
+ this.data = node;
+ node = tmpNode;
+ }
+
+ // insert the small tree into the large tree at appropriate level
+ this._insert(node, this.data.height - node.height - 1, true);
+ }
+
+ return this;
+ },
+
+ insert: function (item) {
+ if (item) this._insert(item, this.data.height - 1);
+ return this;
+ },
+
+ clear: function () {
+ this.data = createNode([]);
+ return this;
+ },
+
+ remove: function (item, equalsFn) {
+ if (!item) return this;
+
+ var node = this.data,
+ bbox = this.toBBox(item),
+ path = [],
+ indexes = [],
+ i, parent, index, goingUp;
+
+ // depth-first iterative tree traversal
+ while (node || path.length) {
+
+ if (!node) { // go up
+ node = path.pop();
+ parent = path[path.length - 1];
+ i = indexes.pop();
+ goingUp = true;
+ }
+
+ if (node.leaf) { // check current node
+ index = findItem(item, node.children, equalsFn);
+
+ if (index !== -1) {
+ // item found, remove the item and condense tree upwards
+ node.children.splice(index, 1);
+ path.push(node);
+ this._condense(path);
+ return this;
+ }
+ }
+
+ if (!goingUp && !node.leaf && contains(node, bbox)) { // go down
+ path.push(node);
+ indexes.push(i);
+ i = 0;
+ parent = node;
+ node = node.children[0];
+
+ } else if (parent) { // go right
+ i++;
+ node = parent.children[i];
+ goingUp = false;
+
+ } else node = null; // nothing found
+ }
+
+ return this;
+ },
+
+ toBBox: function (item) { return item; },
+
+ compareMinX: compareNodeMinX,
+ compareMinY: compareNodeMinY,
+
+ toJSON: function () { return this.data; },
+
+ fromJSON: function (data) {
+ this.data = data;
+ return this;
+ },
+
+ _all: function (node, result) {
+ var nodesToSearch = [];
+ while (node) {
+ if (node.leaf) result.push.apply(result, node.children);
+ else nodesToSearch.push.apply(nodesToSearch, node.children);
+
+ node = nodesToSearch.pop();
+ }
+ return result;
+ },
+
+ _build: function (items, left, right, height) {
+
+ var N = right - left + 1,
+ M = this._maxEntries,
+ node;
+
+ if (N <= M) {
+ // reached leaf level; return leaf
+ node = createNode(items.slice(left, right + 1));
+ calcBBox(node, this.toBBox);
+ return node;
+ }
+
+ if (!height) {
+ // target height of the bulk-loaded tree
+ height = Math.ceil(Math.log(N) / Math.log(M));
+
+ // target number of root entries to maximize storage utilization
+ M = Math.ceil(N / Math.pow(M, height - 1));
+ }
+
+ node = createNode([]);
+ node.leaf = false;
+ node.height = height;
+
+ // split the items into M mostly square tiles
+
+ var N2 = Math.ceil(N / M),
+ N1 = N2 * Math.ceil(Math.sqrt(M)),
+ i, j, right2, right3;
+
+ multiSelect(items, left, right, N1, this.compareMinX);
+
+ for (i = left; i <= right; i += N1) {
+
+ right2 = Math.min(i + N1 - 1, right);
+
+ multiSelect(items, i, right2, N2, this.compareMinY);
+
+ for (j = i; j <= right2; j += N2) {
+
+ right3 = Math.min(j + N2 - 1, right2);
+
+ // pack each entry recursively
+ node.children.push(this._build(items, j, right3, height - 1));
+ }
+ }
+
+ calcBBox(node, this.toBBox);
+
+ return node;
+ },
+
+ _chooseSubtree: function (bbox, node, level, path) {
+
+ var i, len, child, targetNode, area, enlargement, minArea, minEnlargement;
+
+ while (true) {
+ path.push(node);
+
+ if (node.leaf || path.length - 1 === level) break;
+
+ minArea = minEnlargement = Infinity;
+
+ for (i = 0, len = node.children.length; i < len; i++) {
+ child = node.children[i];
+ area = bboxArea(child);
+ enlargement = enlargedArea(bbox, child) - area;
+
+ // choose entry with the least area enlargement
+ if (enlargement < minEnlargement) {
+ minEnlargement = enlargement;
+ minArea = area < minArea ? area : minArea;
+ targetNode = child;
+
+ } else if (enlargement === minEnlargement) {
+ // otherwise choose one with the smallest area
+ if (area < minArea) {
+ minArea = area;
+ targetNode = child;
+ }
+ }
+ }
+
+ node = targetNode || node.children[0];
+ }
+
+ return node;
+ },
+
+ _insert: function (item, level, isNode) {
+
+ var toBBox = this.toBBox,
+ bbox = isNode ? item : toBBox(item),
+ insertPath = [];
+
+ // find the best node for accommodating the item, saving all nodes along the path too
+ var node = this._chooseSubtree(bbox, this.data, level, insertPath);
+
+ // put the item into the node
+ node.children.push(item);
+ extend(node, bbox);
+
+ // split on node overflow; propagate upwards if necessary
+ while (level >= 0) {
+ if (insertPath[level].children.length > this._maxEntries) {
+ this._split(insertPath, level);
+ level--;
+ } else break;
+ }
+
+ // adjust bboxes along the insertion path
+ this._adjustParentBBoxes(bbox, insertPath, level);
+ },
+
+ // split overflowed node into two
+ _split: function (insertPath, level) {
+
+ var node = insertPath[level],
+ M = node.children.length,
+ m = this._minEntries;
+
+ this._chooseSplitAxis(node, m, M);
+
+ var splitIndex = this._chooseSplitIndex(node, m, M);
+
+ var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));
+ newNode.height = node.height;
+ newNode.leaf = node.leaf;
+
+ calcBBox(node, this.toBBox);
+ calcBBox(newNode, this.toBBox);
+
+ if (level) insertPath[level - 1].children.push(newNode);
+ else this._splitRoot(node, newNode);
+ },
+
+ _splitRoot: function (node, newNode) {
+ // split root node
+ this.data = createNode([node, newNode]);
+ this.data.height = node.height + 1;
+ this.data.leaf = false;
+ calcBBox(this.data, this.toBBox);
+ },
+
+ _chooseSplitIndex: function (node, m, M) {
+
+ var i, bbox1, bbox2, overlap, area, minOverlap, minArea, index;
+
+ minOverlap = minArea = Infinity;
+
+ for (i = m; i <= M - m; i++) {
+ bbox1 = distBBox(node, 0, i, this.toBBox);
+ bbox2 = distBBox(node, i, M, this.toBBox);
+
+ overlap = intersectionArea(bbox1, bbox2);
+ area = bboxArea(bbox1) + bboxArea(bbox2);
+
+ // choose distribution with minimum overlap
+ if (overlap < minOverlap) {
+ minOverlap = overlap;
+ index = i;
+
+ minArea = area < minArea ? area : minArea;
+
+ } else if (overlap === minOverlap) {
+ // otherwise choose distribution with minimum area
+ if (area < minArea) {
+ minArea = area;
+ index = i;
+ }
+ }
+ }
+
+ return index;
+ },
+
+ // sorts node children by the best axis for split
+ _chooseSplitAxis: function (node, m, M) {
+
+ var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX,
+ compareMinY = node.leaf ? this.compareMinY : compareNodeMinY,
+ xMargin = this._allDistMargin(node, m, M, compareMinX),
+ yMargin = this._allDistMargin(node, m, M, compareMinY);
+
+ // if total distributions margin value is minimal for x, sort by minX,
+ // otherwise it's already sorted by minY
+ if (xMargin < yMargin) node.children.sort(compareMinX);
+ },
+
+ // total margin of all possible split distributions where each node is at least m full
+ _allDistMargin: function (node, m, M, compare) {
+
+ node.children.sort(compare);
+
+ var toBBox = this.toBBox,
+ leftBBox = distBBox(node, 0, m, toBBox),
+ rightBBox = distBBox(node, M - m, M, toBBox),
+ margin = bboxMargin(leftBBox) + bboxMargin(rightBBox),
+ i, child;
+
+ for (i = m; i < M - m; i++) {
+ child = node.children[i];
+ extend(leftBBox, node.leaf ? toBBox(child) : child);
+ margin += bboxMargin(leftBBox);
+ }
+
+ for (i = M - m - 1; i >= m; i--) {
+ child = node.children[i];
+ extend(rightBBox, node.leaf ? toBBox(child) : child);
+ margin += bboxMargin(rightBBox);
+ }
+
+ return margin;
+ },
+
+ _adjustParentBBoxes: function (bbox, path, level) {
+ // adjust bboxes along the given tree path
+ for (var i = level; i >= 0; i--) {
+ extend(path[i], bbox);
+ }
+ },
+
+ _condense: function (path) {
+ // go through the path, removing empty nodes and updating bboxes
+ for (var i = path.length - 1, siblings; i >= 0; i--) {
+ if (path[i].children.length === 0) {
+ if (i > 0) {
+ siblings = path[i - 1].children;
+ siblings.splice(siblings.indexOf(path[i]), 1);
+
+ } else this.clear();
+
+ } else calcBBox(path[i], this.toBBox);
+ }
+ },
+
+ _initFormat: function (format) {
+ // data format (minX, minY, maxX, maxY accessors)
+
+ // uses eval-type function compilation instead of just accepting a toBBox function
+ // because the algorithms are very sensitive to sorting functions performance,
+ // so they should be dead simple and without inner calls
+
+ var compareArr = ['return a', ' - b', ';'];
+
+ this.compareMinX = new Function('a', 'b', compareArr.join(format[0]));
+ this.compareMinY = new Function('a', 'b', compareArr.join(format[1]));
+
+ this.toBBox = new Function('a',
+ 'return {minX: a' + format[0] +
+ ', minY: a' + format[1] +
+ ', maxX: a' + format[2] +
+ ', maxY: a' + format[3] + '};');
+ }
+};
+
+function findItem(item, items, equalsFn) {
+ if (!equalsFn) return items.indexOf(item);
+
+ for (var i = 0; i < items.length; i++) {
+ if (equalsFn(item, items[i])) return i;
+ }
+ return -1;
+}
+
+// calculate node's bbox from bboxes of its children
+function calcBBox(node, toBBox) {
+ distBBox(node, 0, node.children.length, toBBox, node);
+}
+
+// min bounding rectangle of node children from k to p-1
+function distBBox(node, k, p, toBBox, destNode) {
+ if (!destNode) destNode = createNode(null);
+ destNode.minX = Infinity;
+ destNode.minY = Infinity;
+ destNode.maxX = -Infinity;
+ destNode.maxY = -Infinity;
+
+ for (var i = k, child; i < p; i++) {
+ child = node.children[i];
+ extend(destNode, node.leaf ? toBBox(child) : child);
+ }
+
+ return destNode;
+}
+
+function extend(a, b) {
+ a.minX = Math.min(a.minX, b.minX);
+ a.minY = Math.min(a.minY, b.minY);
+ a.maxX = Math.max(a.maxX, b.maxX);
+ a.maxY = Math.max(a.maxY, b.maxY);
+ return a;
+}
+
+function compareNodeMinX(a, b) { return a.minX - b.minX; }
+function compareNodeMinY(a, b) { return a.minY - b.minY; }
+
+function bboxArea(a) { return (a.maxX - a.minX) * (a.maxY - a.minY); }
+function bboxMargin(a) { return (a.maxX - a.minX) + (a.maxY - a.minY); }
+
+function enlargedArea(a, b) {
+ return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) *
+ (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
+}
+
+function intersectionArea(a, b) {
+ var minX = Math.max(a.minX, b.minX),
+ minY = Math.max(a.minY, b.minY),
+ maxX = Math.min(a.maxX, b.maxX),
+ maxY = Math.min(a.maxY, b.maxY);
+
+ return Math.max(0, maxX - minX) *
+ Math.max(0, maxY - minY);
+}
+
+function contains(a, b) {
+ return a.minX <= b.minX &&
+ a.minY <= b.minY &&
+ b.maxX <= a.maxX &&
+ b.maxY <= a.maxY;
+}
+
+function intersects(a, b) {
+ return b.minX <= a.maxX &&
+ b.minY <= a.maxY &&
+ b.maxX >= a.minX &&
+ b.maxY >= a.minY;
+}
+
+function createNode(children) {
+ return {
+ children: children,
+ height: 1,
+ leaf: true,
+ minX: Infinity,
+ minY: Infinity,
+ maxX: -Infinity,
+ maxY: -Infinity
+ };
+}
+
+// sort an array so that items come in groups of n unsorted items, with groups sorted between each other;
+// combines selection algorithm with binary divide & conquer approach
+
+function multiSelect(arr, left, right, n, compare) {
+ var stack = [left, right],
+ mid;
+
+ while (stack.length) {
+ right = stack.pop();
+ left = stack.pop();
+
+ if (right - left <= n) continue;
+
+ mid = left + Math.ceil((right - left) / n / 2) * n;
+ quickselect(arr, mid, left, right, compare);
+
+ stack.push(left, mid, mid, right);
+ }
+}
+
+},{"quickselect":2}],2:[function(_dereq_,module,exports){
+'use strict';
+
+module.exports = partialSort;
+
+// Floyd-Rivest selection algorithm:
+// Rearrange items so that all items in the [left, k] range are smaller than all items in (k, right];
+// The k-th element will have the (k - left + 1)th smallest value in [left, right]
+
+function partialSort(arr, k, left, right, compare) {
+ left = left || 0;
+ right = right || (arr.length - 1);
+ compare = compare || defaultCompare;
+
+ while (right > left) {
+ if (right - left > 600) {
+ var n = right - left + 1;
+ var m = k - left + 1;
+ var z = Math.log(n);
+ var s = 0.5 * Math.exp(2 * z / 3);
+ var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+ var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+ var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+ partialSort(arr, k, newLeft, newRight, compare);
+ }
+
+ var t = arr[k];
+ var i = left;
+ var j = right;
+
+ swap(arr, left, k);
+ if (compare(arr[right], t) > 0) swap(arr, left, right);
+
+ while (i < j) {
+ swap(arr, i, j);
+ i++;
+ j--;
+ while (compare(arr[i], t) < 0) i++;
+ while (compare(arr[j], t) > 0) j--;
+ }
+
+ if (compare(arr[left], t) === 0) swap(arr, left, j);
+ else {
+ j++;
+ swap(arr, j, right);
+ }
+
+ if (j <= k) left = j + 1;
+ if (k <= j) right = j - 1;
+ }
+}
+
+function swap(arr, i, j) {
+ var tmp = arr[i];
+ arr[i] = arr[j];
+ arr[j] = tmp;
+}
+
+function defaultCompare(a, b) {
+ return a < b ? -1 : a > b ? 1 : 0;
+}
+
+},{}]},{},[1])(1)
+});
+ol.ext.rbush = module.exports;
+})();
+
+goog.provide('ol.structs.RBush');
+
+goog.require('goog.asserts');
+goog.require('ol.ext.rbush');
+goog.require('ol.extent');
+goog.require('ol.object');
+
+
+/**
+ * Wrapper around the RBush by Vladimir Agafonkin.
+ *
+ * @constructor
+ * @param {number=} opt_maxEntries Max entries.
+ * @see https://github.com/mourner/rbush
+ * @struct
+ * @template T
+ */
+ol.structs.RBush = function(opt_maxEntries) {
+
+ /**
+ * @private
+ */
+ this.rbush_ = ol.ext.rbush(opt_maxEntries);
+
+ /**
+ * A mapping between the objects added to this rbush wrapper
+ * and the objects that are actually added to the internal rbush.
+ * @private
+ * @type {Object.<number, ol.RBushEntry>}
+ */
+ this.items_ = {};
+
+ if (goog.DEBUG) {
+ /**
+ * @private
+ * @type {number}
+ */
+ this.readers_ = 0;
+ }
+};
+
+
+/**
+ * Insert a value into the RBush.
+ * @param {ol.Extent} extent Extent.
+ * @param {T} value Value.
+ */
+ol.structs.RBush.prototype.insert = function(extent, value) {
+ if (goog.DEBUG && this.readers_) {
+ throw new Error('Can not insert value while reading');
+ }
+ /** @type {ol.RBushEntry} */
+ var item = {
+ minX: extent[0],
+ minY: extent[1],
+ maxX: extent[2],
+ maxY: extent[3],
+ value: value
+ };
+
+ this.rbush_.insert(item);
+ // remember the object that was added to the internal rbush
+ goog.asserts.assert(!(goog.getUid(value) in this.items_),
+ 'uid (%s) of value (%s) already exists', goog.getUid(value), value);
+ this.items_[goog.getUid(value)] = item;
+};
+
+
+/**
+ * Bulk-insert values into the RBush.
+ * @param {Array.<ol.Extent>} extents Extents.
+ * @param {Array.<T>} values Values.
+ */
+ol.structs.RBush.prototype.load = function(extents, values) {
+ if (goog.DEBUG && this.readers_) {
+ throw new Error('Can not insert values while reading');
+ }
+ goog.asserts.assert(extents.length === values.length,
+ 'extens and values must have same length (%s === %s)',
+ extents.length, values.length);
+
+ var items = new Array(values.length);
+ for (var i = 0, l = values.length; i < l; i++) {
+ var extent = extents[i];
+ var value = values[i];
+
+ /** @type {ol.RBushEntry} */
+ var item = {
+ minX: extent[0],
+ minY: extent[1],
+ maxX: extent[2],
+ maxY: extent[3],
+ value: value
+ };
+ items[i] = item;
+ goog.asserts.assert(!(goog.getUid(value) in this.items_),
+ 'uid (%s) of value (%s) already exists', goog.getUid(value), value);
+ this.items_[goog.getUid(value)] = item;
+ }
+ this.rbush_.load(items);
+};
+
+
+/**
+ * Remove a value from the RBush.
+ * @param {T} value Value.
+ * @return {boolean} Removed.
+ */
+ol.structs.RBush.prototype.remove = function(value) {
+ if (goog.DEBUG && this.readers_) {
+ throw new Error('Can not remove value while reading');
+ }
+ var uid = goog.getUid(value);
+ goog.asserts.assert(uid in this.items_,
+ 'uid (%s) of value (%s) does not exist', uid, value);
+
+ // get the object in which the value was wrapped when adding to the
+ // internal rbush. then use that object to do the removal.
+ var item = this.items_[uid];
+ delete this.items_[uid];
+ return this.rbush_.remove(item) !== null;
+};
+
+
+/**
+ * Update the extent of a value in the RBush.
+ * @param {ol.Extent} extent Extent.
+ * @param {T} value Value.
+ */
+ol.structs.RBush.prototype.update = function(extent, value) {
+ var uid = goog.getUid(value);
+ goog.asserts.assert(uid in this.items_,
+ 'uid (%s) of value (%s) does not exist', uid, value);
+
+ var item = this.items_[uid];
+ var bbox = [item.minX, item.minY, item.maxX, item.maxY];
+ if (!ol.extent.equals(bbox, extent)) {
+ if (goog.DEBUG && this.readers_) {
+ throw new Error('Can not update extent while reading');
+ }
+ this.remove(value);
+ this.insert(extent, value);
+ }
+};
+
+
+/**
+ * Return all values in the RBush.
+ * @return {Array.<T>} All.
+ */
+ol.structs.RBush.prototype.getAll = function() {
+ var items = this.rbush_.all();
+ return items.map(function(item) {
+ return item.value;
+ });
+};
+
+
+/**
+ * Return all values in the given extent.
+ * @param {ol.Extent} extent Extent.
+ * @return {Array.<T>} All in extent.
+ */
+ol.structs.RBush.prototype.getInExtent = function(extent) {
+ /** @type {ol.RBushEntry} */
+ var bbox = {
+ minX: extent[0],
+ minY: extent[1],
+ maxX: extent[2],
+ maxY: extent[3]
+ };
+ var items = this.rbush_.search(bbox);
+ return items.map(function(item) {
+ return item.value;
+ });
+};
+
+
+/**
+ * Calls a callback function with each value in the tree.
+ * If the callback returns a truthy value, this value is returned without
+ * checking the rest of the tree.
+ * @param {function(this: S, T): *} callback Callback.
+ * @param {S=} opt_this The object to use as `this` in `callback`.
+ * @return {*} Callback return value.
+ * @template S
+ */
+ol.structs.RBush.prototype.forEach = function(callback, opt_this) {
+ if (goog.DEBUG) {
+ ++this.readers_;
+ try {
+ return this.forEach_(this.getAll(), callback, opt_this);
+ } finally {
+ --this.readers_;
+ }
+ } else {
+ return this.forEach_(this.getAll(), callback, opt_this);
+ }
+};
+
+
+/**
+ * Calls a callback function with each value in the provided extent.
+ * @param {ol.Extent} extent Extent.
+ * @param {function(this: S, T): *} callback Callback.
+ * @param {S=} opt_this The object to use as `this` in `callback`.
+ * @return {*} Callback return value.
+ * @template S
+ */
+ol.structs.RBush.prototype.forEachInExtent = function(extent, callback, opt_this) {
+ if (goog.DEBUG) {
+ ++this.readers_;
+ try {
+ return this.forEach_(this.getInExtent(extent), callback, opt_this);
+ } finally {
+ --this.readers_;
+ }
+ } else {
+ return this.forEach_(this.getInExtent(extent), callback, opt_this);
+ }
+};
+
+
+/**
+ * @param {Array.<T>} values Values.
+ * @param {function(this: S, T): *} callback Callback.
+ * @param {S=} opt_this The object to use as `this` in `callback`.
+ * @private
+ * @return {*} Callback return value.
+ * @template S
+ */
+ol.structs.RBush.prototype.forEach_ = function(values, callback, opt_this) {
+ var result;
+ for (var i = 0, l = values.length; i < l; i++) {
+ result = callback.call(opt_this, values[i]);
+ if (result) {
+ return result;
+ }
+ }
+ return result;
+};
+
+
+/**
+ * @return {boolean} Is empty.
+ */
+ol.structs.RBush.prototype.isEmpty = function() {
+ return ol.object.isEmpty(this.items_);
+};
+
+
+/**
+ * Remove all values from the RBush.
+ */
+ol.structs.RBush.prototype.clear = function() {
+ this.rbush_.clear();
+ this.items_ = {};
+};
+
+
+/**
+ * @param {ol.Extent=} opt_extent Extent.
+ * @return {!ol.Extent} Extent.
+ */
+ol.structs.RBush.prototype.getExtent = function(opt_extent) {
+ // FIXME add getExtent() to rbush
+ var data = this.rbush_.data;
+ return [data.minX, data.minY, data.maxX, data.maxY];
+};
+
+// FIXME bulk feature upload - suppress events
+// FIXME make change-detection more refined (notably, geometry hint)
+
+goog.provide('ol.source.Vector');
+goog.provide('ol.source.VectorEvent');
+goog.provide('ol.source.VectorEventType');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEventType');
+goog.require('ol.Feature');
+goog.require('ol.ObjectEventType');
+goog.require('ol.array');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.featureloader');
+goog.require('ol.loadingstrategy');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.source.Source');
+goog.require('ol.source.State');
+goog.require('ol.structs.RBush');
+
+
+/**
+ * @enum {string}
+ */
+ol.source.VectorEventType = {
+ /**
+ * Triggered when a feature is added to the source.
+ * @event ol.source.VectorEvent#addfeature
+ * @api stable
+ */
+ ADDFEATURE: 'addfeature',
+
+ /**
+ * Triggered when a feature is updated.
+ * @event ol.source.VectorEvent#changefeature
+ * @api
+ */
+ CHANGEFEATURE: 'changefeature',
+
+ /**
+ * Triggered when the clear method is called on the source.
+ * @event ol.source.VectorEvent#clear
+ * @api
+ */
+ CLEAR: 'clear',
+
+ /**
+ * Triggered when a feature is removed from the source.
+ * See {@link ol.source.Vector#clear source.clear()} for exceptions.
+ * @event ol.source.VectorEvent#removefeature
+ * @api stable
+ */
+ REMOVEFEATURE: 'removefeature'
+};
+
+
+/**
+ * @classdesc
+ * Provides a source of features for vector layers. Vector features provided
+ * by this source are suitable for editing. See {@link ol.source.VectorTile} for
+ * vector data that is optimized for rendering.
+ *
+ * @constructor
+ * @extends {ol.source.Source}
+ * @fires ol.source.VectorEvent
+ * @param {olx.source.VectorOptions=} opt_options Vector source options.
+ * @api stable
+ */
+ol.source.Vector = function(opt_options) {
+
+ var options = opt_options || {};
+
+ ol.source.Source.call(this, {
+ attributions: options.attributions,
+ logo: options.logo,
+ projection: undefined,
+ state: ol.source.State.READY,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+ /**
+ * @private
+ * @type {ol.FeatureLoader}
+ */
+ this.loader_ = ol.nullFunction;
+
+ /**
+ * @private
+ * @type {ol.format.Feature|undefined}
+ */
+ this.format_ = options.format;
+
+ /**
+ * @private
+ * @type {string|ol.FeatureUrlFunction|undefined}
+ */
+ this.url_ = options.url;
+
+ if (options.loader !== undefined) {
+ this.loader_ = options.loader;
+ } else if (this.url_ !== undefined) {
+ goog.asserts.assert(this.format_ !== undefined,
+ 'format must be set when url is set');
+ // create a XHR feature loader for "url" and "format"
+ this.loader_ = ol.featureloader.xhr(this.url_, this.format_);
+ }
+
+ /**
+ * @private
+ * @type {ol.LoadingStrategy}
+ */
+ this.strategy_ = options.strategy !== undefined ? options.strategy :
+ ol.loadingstrategy.all;
+
+ var useSpatialIndex =
+ options.useSpatialIndex !== undefined ? options.useSpatialIndex : true;
+
+ /**
+ * @private
+ * @type {ol.structs.RBush.<ol.Feature>}
+ */
+ this.featuresRtree_ = useSpatialIndex ? new ol.structs.RBush() : null;
+
+ /**
+ * @private
+ * @type {ol.structs.RBush.<{extent: ol.Extent}>}
+ */
+ this.loadedExtentsRtree_ = new ol.structs.RBush();
+
+ /**
+ * @private
+ * @type {Object.<string, ol.Feature>}
+ */
+ this.nullGeometryFeatures_ = {};
+
+ /**
+ * A lookup of features by id (the return from feature.getId()).
+ * @private
+ * @type {Object.<string, ol.Feature>}
+ */
+ this.idIndex_ = {};
+
+ /**
+ * A lookup of features without id (keyed by goog.getUid(feature)).
+ * @private
+ * @type {Object.<string, ol.Feature>}
+ */
+ this.undefIdIndex_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, Array.<ol.EventsKey>>}
+ */
+ this.featureChangeKeys_ = {};
+
+ /**
+ * @private
+ * @type {ol.Collection.<ol.Feature>}
+ */
+ this.featuresCollection_ = null;
+
+ var collection, features;
+ if (options.features instanceof ol.Collection) {
+ collection = options.features;
+ features = collection.getArray();
+ } else if (Array.isArray(options.features)) {
+ features = options.features;
+ }
+ if (!useSpatialIndex && collection === undefined) {
+ collection = new ol.Collection(features);
+ }
+ if (features !== undefined) {
+ this.addFeaturesInternal(features);
+ }
+ if (collection !== undefined) {
+ this.bindFeaturesCollection_(collection);
+ }
+
+};
+ol.inherits(ol.source.Vector, ol.source.Source);
+
+
+/**
+ * Add a single feature to the source. If you want to add a batch of features
+ * at once, call {@link ol.source.Vector#addFeatures source.addFeatures()}
+ * instead.
+ * @param {ol.Feature} feature Feature to add.
+ * @api stable
+ */
+ol.source.Vector.prototype.addFeature = function(feature) {
+ this.addFeatureInternal(feature);
+ this.changed();
+};
+
+
+/**
+ * Add a feature without firing a `change` event.
+ * @param {ol.Feature} feature Feature.
+ * @protected
+ */
+ol.source.Vector.prototype.addFeatureInternal = function(feature) {
+ var featureKey = goog.getUid(feature).toString();
+
+ if (!this.addToIndex_(featureKey, feature)) {
+ return;
+ }
+
+ this.setupChangeEvents_(featureKey, feature);
+
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ var extent = geometry.getExtent();
+ if (this.featuresRtree_) {
+ this.featuresRtree_.insert(extent, feature);
+ }
+ } else {
+ this.nullGeometryFeatures_[featureKey] = feature;
+ }
+
+ this.dispatchEvent(
+ new ol.source.VectorEvent(ol.source.VectorEventType.ADDFEATURE, feature));
+};
+
+
+/**
+ * @param {string} featureKey Unique identifier for the feature.
+ * @param {ol.Feature} feature The feature.
+ * @private
+ */
+ol.source.Vector.prototype.setupChangeEvents_ = function(featureKey, feature) {
+ goog.asserts.assert(!(featureKey in this.featureChangeKeys_),
+ 'key (%s) not yet registered in featureChangeKey', featureKey);
+ this.featureChangeKeys_[featureKey] = [
+ ol.events.listen(feature, ol.events.EventType.CHANGE,
+ this.handleFeatureChange_, this),
+ ol.events.listen(feature, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleFeatureChange_, this)
+ ];
+};
+
+
+/**
+ * @param {string} featureKey Unique identifier for the feature.
+ * @param {ol.Feature} feature The feature.
+ * @return {boolean} The feature is "valid", in the sense that it is also a
+ * candidate for insertion into the Rtree.
+ * @private
+ */
+ol.source.Vector.prototype.addToIndex_ = function(featureKey, feature) {
+ var valid = true;
+ var id = feature.getId();
+ if (id !== undefined) {
+ if (!(id.toString() in this.idIndex_)) {
+ this.idIndex_[id.toString()] = feature;
+ } else {
+ valid = false;
+ }
+ } else {
+ goog.asserts.assert(!(featureKey in this.undefIdIndex_),
+ 'Feature already added to the source');
+ this.undefIdIndex_[featureKey] = feature;
+ }
+ return valid;
+};
+
+
+/**
+ * Add a batch of features to the source.
+ * @param {Array.<ol.Feature>} features Features to add.
+ * @api stable
+ */
+ol.source.Vector.prototype.addFeatures = function(features) {
+ this.addFeaturesInternal(features);
+ this.changed();
+};
+
+
+/**
+ * Add features without firing a `change` event.
+ * @param {Array.<ol.Feature>} features Features.
+ * @protected
+ */
+ol.source.Vector.prototype.addFeaturesInternal = function(features) {
+ var featureKey, i, length, feature;
+
+ var extents = [];
+ var newFeatures = [];
+ var geometryFeatures = [];
+
+ for (i = 0, length = features.length; i < length; i++) {
+ feature = features[i];
+ featureKey = goog.getUid(feature).toString();
+ if (this.addToIndex_(featureKey, feature)) {
+ newFeatures.push(feature);
+ }
+ }
+
+ for (i = 0, length = newFeatures.length; i < length; i++) {
+ feature = newFeatures[i];
+ featureKey = goog.getUid(feature).toString();
+ this.setupChangeEvents_(featureKey, feature);
+
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ var extent = geometry.getExtent();
+ extents.push(extent);
+ geometryFeatures.push(feature);
+ } else {
+ this.nullGeometryFeatures_[featureKey] = feature;
+ }
+ }
+ if (this.featuresRtree_) {
+ this.featuresRtree_.load(extents, geometryFeatures);
+ }
+
+ for (i = 0, length = newFeatures.length; i < length; i++) {
+ this.dispatchEvent(new ol.source.VectorEvent(
+ ol.source.VectorEventType.ADDFEATURE, newFeatures[i]));
+ }
+};
+
+
+/**
+ * @param {!ol.Collection.<ol.Feature>} collection Collection.
+ * @private
+ */
+ol.source.Vector.prototype.bindFeaturesCollection_ = function(collection) {
+ goog.asserts.assert(!this.featuresCollection_,
+ 'bindFeaturesCollection can only be called once');
+ var modifyingCollection = false;
+ ol.events.listen(this, ol.source.VectorEventType.ADDFEATURE,
+ function(evt) {
+ if (!modifyingCollection) {
+ modifyingCollection = true;
+ collection.push(evt.feature);
+ modifyingCollection = false;
+ }
+ });
+ ol.events.listen(this, ol.source.VectorEventType.REMOVEFEATURE,
+ function(evt) {
+ if (!modifyingCollection) {
+ modifyingCollection = true;
+ collection.remove(evt.feature);
+ modifyingCollection = false;
+ }
+ });
+ ol.events.listen(collection, ol.CollectionEventType.ADD,
+ function(evt) {
+ if (!modifyingCollection) {
+ var feature = evt.element;
+ goog.asserts.assertInstanceof(feature, ol.Feature);
+ modifyingCollection = true;
+ this.addFeature(feature);
+ modifyingCollection = false;
+ }
+ }, this);
+ ol.events.listen(collection, ol.CollectionEventType.REMOVE,
+ function(evt) {
+ if (!modifyingCollection) {
+ var feature = evt.element;
+ goog.asserts.assertInstanceof(feature, ol.Feature);
+ modifyingCollection = true;
+ this.removeFeature(feature);
+ modifyingCollection = false;
+ }
+ }, this);
+ this.featuresCollection_ = collection;
+};
+
+
+/**
+ * Remove all features from the source.
+ * @param {boolean=} opt_fast Skip dispatching of {@link removefeature} events.
+ * @api stable
+ */
+ol.source.Vector.prototype.clear = function(opt_fast) {
+ if (opt_fast) {
+ for (var featureId in this.featureChangeKeys_) {
+ var keys = this.featureChangeKeys_[featureId];
+ keys.forEach(ol.events.unlistenByKey);
+ }
+ if (!this.featuresCollection_) {
+ this.featureChangeKeys_ = {};
+ this.idIndex_ = {};
+ this.undefIdIndex_ = {};
+ }
+ } else {
+ if (this.featuresRtree_) {
+ this.featuresRtree_.forEach(this.removeFeatureInternal, this);
+ for (var id in this.nullGeometryFeatures_) {
+ this.removeFeatureInternal(this.nullGeometryFeatures_[id]);
+ }
+ }
+ }
+ if (this.featuresCollection_) {
+ this.featuresCollection_.clear();
+ }
+ goog.asserts.assert(ol.object.isEmpty(this.featureChangeKeys_),
+ 'featureChangeKeys is an empty object now');
+ goog.asserts.assert(ol.object.isEmpty(this.idIndex_),
+ 'idIndex is an empty object now');
+ goog.asserts.assert(ol.object.isEmpty(this.undefIdIndex_),
+ 'undefIdIndex is an empty object now');
+
+ if (this.featuresRtree_) {
+ this.featuresRtree_.clear();
+ }
+ this.loadedExtentsRtree_.clear();
+ this.nullGeometryFeatures_ = {};
+
+ var clearEvent = new ol.source.VectorEvent(ol.source.VectorEventType.CLEAR);
+ this.dispatchEvent(clearEvent);
+ this.changed();
+};
+
+
+/**
+ * Iterate through all features on the source, calling the provided callback
+ * with each one. If the callback returns any "truthy" value, iteration will
+ * stop and the function will return the same value.
+ *
+ * @param {function(this: T, ol.Feature): S} callback Called with each feature
+ * on the source. Return a truthy value to stop iteration.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @return {S|undefined} The return value from the last call to the callback.
+ * @template T,S
+ * @api stable
+ */
+ol.source.Vector.prototype.forEachFeature = function(callback, opt_this) {
+ if (this.featuresRtree_) {
+ return this.featuresRtree_.forEach(callback, opt_this);
+ } else if (this.featuresCollection_) {
+ return this.featuresCollection_.forEach(callback, opt_this);
+ }
+};
+
+
+/**
+ * Iterate through all features whose geometries contain the provided
+ * coordinate, calling the callback with each feature. If the callback returns
+ * a "truthy" value, iteration will stop and the function will return the same
+ * value.
+ *
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {function(this: T, ol.Feature): S} callback Called with each feature
+ * whose goemetry contains the provided coordinate.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @return {S|undefined} The return value from the last call to the callback.
+ * @template T,S
+ */
+ol.source.Vector.prototype.forEachFeatureAtCoordinateDirect = function(coordinate, callback, opt_this) {
+ var extent = [coordinate[0], coordinate[1], coordinate[0], coordinate[1]];
+ return this.forEachFeatureInExtent(extent, function(feature) {
+ var geometry = feature.getGeometry();
+ goog.asserts.assert(geometry, 'feature geometry is defined and not null');
+ if (geometry.containsCoordinate(coordinate)) {
+ return callback.call(opt_this, feature);
+ } else {
+ return undefined;
+ }
+ });
+};
+
+
+/**
+ * Iterate through all features whose bounding box intersects the provided
+ * extent (note that the feature's geometry may not intersect the extent),
+ * calling the callback with each feature. If the callback returns a "truthy"
+ * value, iteration will stop and the function will return the same value.
+ *
+ * If you are interested in features whose geometry intersects an extent, call
+ * the {@link ol.source.Vector#forEachFeatureIntersectingExtent
+ * source.forEachFeatureIntersectingExtent()} method instead.
+ *
+ * When `useSpatialIndex` is set to false, this method will loop through all
+ * features, equivalent to {@link ol.source.Vector#forEachFeature}.
+ *
+ * @param {ol.Extent} extent Extent.
+ * @param {function(this: T, ol.Feature): S} callback Called with each feature
+ * whose bounding box intersects the provided extent.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @return {S|undefined} The return value from the last call to the callback.
+ * @template T,S
+ * @api
+ */
+ol.source.Vector.prototype.forEachFeatureInExtent = function(extent, callback, opt_this) {
+ if (this.featuresRtree_) {
+ return this.featuresRtree_.forEachInExtent(extent, callback, opt_this);
+ } else if (this.featuresCollection_) {
+ return this.featuresCollection_.forEach(callback, opt_this);
+ }
+};
+
+
+/**
+ * Iterate through all features whose geometry intersects the provided extent,
+ * calling the callback with each feature. If the callback returns a "truthy"
+ * value, iteration will stop and the function will return the same value.
+ *
+ * If you only want to test for bounding box intersection, call the
+ * {@link ol.source.Vector#forEachFeatureInExtent
+ * source.forEachFeatureInExtent()} method instead.
+ *
+ * @param {ol.Extent} extent Extent.
+ * @param {function(this: T, ol.Feature): S} callback Called with each feature
+ * whose geometry intersects the provided extent.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @return {S|undefined} The return value from the last call to the callback.
+ * @template T,S
+ * @api
+ */
+ol.source.Vector.prototype.forEachFeatureIntersectingExtent = function(extent, callback, opt_this) {
+ return this.forEachFeatureInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ * @return {S|undefined} The return value from the last call to the callback.
+ * @template S
+ */
+ function(feature) {
+ var geometry = feature.getGeometry();
+ goog.asserts.assert(geometry,
+ 'feature geometry is defined and not null');
+ if (geometry.intersectsExtent(extent)) {
+ var result = callback.call(opt_this, feature);
+ if (result) {
+ return result;
+ }
+ }
+ });
+};
+
+
+/**
+ * Get the features collection associated with this source. Will be `null`
+ * unless the source was configured with `useSpatialIndex` set to `false`, or
+ * with an {@link ol.Collection} as `features`.
+ * @return {ol.Collection.<ol.Feature>} The collection of features.
+ * @api
+ */
+ol.source.Vector.prototype.getFeaturesCollection = function() {
+ return this.featuresCollection_;
+};
+
+
+/**
+ * Get all features on the source.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.source.Vector.prototype.getFeatures = function() {
+ var features;
+ if (this.featuresCollection_) {
+ features = this.featuresCollection_.getArray();
+ } else if (this.featuresRtree_) {
+ features = this.featuresRtree_.getAll();
+ if (!ol.object.isEmpty(this.nullGeometryFeatures_)) {
+ ol.array.extend(
+ features, ol.object.getValues(this.nullGeometryFeatures_));
+ }
+ }
+ goog.asserts.assert(features !== undefined,
+ 'Neither featuresRtree_ nor featuresCollection_ are available');
+ return features;
+};
+
+
+/**
+ * Get all features whose geometry intersects the provided coordinate.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.source.Vector.prototype.getFeaturesAtCoordinate = function(coordinate) {
+ var features = [];
+ this.forEachFeatureAtCoordinateDirect(coordinate, function(feature) {
+ features.push(feature);
+ });
+ return features;
+};
+
+
+/**
+ * Get all features in the provided extent. Note that this returns all features
+ * whose bounding boxes intersect the given extent (so it may include features
+ * whose geometries do not intersect the extent).
+ *
+ * This method is not available when the source is configured with
+ * `useSpatialIndex` set to `false`.
+ * @param {ol.Extent} extent Extent.
+ * @return {Array.<ol.Feature>} Features.
+ * @api
+ */
+ol.source.Vector.prototype.getFeaturesInExtent = function(extent) {
+ goog.asserts.assert(this.featuresRtree_,
+ 'getFeaturesInExtent does not work when useSpatialIndex is set to false');
+ return this.featuresRtree_.getInExtent(extent);
+};
+
+
+/**
+ * Get the closest feature to the provided coordinate.
+ *
+ * This method is not available when the source is configured with
+ * `useSpatialIndex` set to `false`.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {function(ol.Feature):boolean=} opt_filter Feature filter function.
+ * The filter function will receive one argument, the {@link ol.Feature feature}
+ * and it should return a boolean value. By default, no filtering is made.
+ * @return {ol.Feature} Closest feature.
+ * @api stable
+ */
+ol.source.Vector.prototype.getClosestFeatureToCoordinate = function(coordinate, opt_filter) {
+ // Find the closest feature using branch and bound. We start searching an
+ // infinite extent, and find the distance from the first feature found. This
+ // becomes the closest feature. We then compute a smaller extent which any
+ // closer feature must intersect. We continue searching with this smaller
+ // extent, trying to find a closer feature. Every time we find a closer
+ // feature, we update the extent being searched so that any even closer
+ // feature must intersect it. We continue until we run out of features.
+ var x = coordinate[0];
+ var y = coordinate[1];
+ var closestFeature = null;
+ var closestPoint = [NaN, NaN];
+ var minSquaredDistance = Infinity;
+ var extent = [-Infinity, -Infinity, Infinity, Infinity];
+ goog.asserts.assert(this.featuresRtree_,
+ 'getClosestFeatureToCoordinate does not work with useSpatialIndex set ' +
+ 'to false');
+ var filter = opt_filter ? opt_filter : ol.functions.TRUE;
+ this.featuresRtree_.forEachInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ */
+ function(feature) {
+ if (filter(feature)) {
+ var geometry = feature.getGeometry();
+ goog.asserts.assert(geometry,
+ 'feature geometry is defined and not null');
+ var previousMinSquaredDistance = minSquaredDistance;
+ minSquaredDistance = geometry.closestPointXY(
+ x, y, closestPoint, minSquaredDistance);
+ if (minSquaredDistance < previousMinSquaredDistance) {
+ closestFeature = feature;
+ // This is sneaky. Reduce the extent that it is currently being
+ // searched while the R-Tree traversal using this same extent object
+ // is still in progress. This is safe because the new extent is
+ // strictly contained by the old extent.
+ var minDistance = Math.sqrt(minSquaredDistance);
+ extent[0] = x - minDistance;
+ extent[1] = y - minDistance;
+ extent[2] = x + minDistance;
+ extent[3] = y + minDistance;
+ }
+ }
+ });
+ return closestFeature;
+};
+
+
+/**
+ * Get the extent of the features currently in the source.
+ *
+ * This method is not available when the source is configured with
+ * `useSpatialIndex` set to `false`.
+ * @return {!ol.Extent} Extent.
+ * @api stable
+ */
+ol.source.Vector.prototype.getExtent = function() {
+ goog.asserts.assert(this.featuresRtree_,
+ 'getExtent does not work when useSpatialIndex is set to false');
+ return this.featuresRtree_.getExtent();
+};
+
+
+/**
+ * Get a feature by its identifier (the value returned by feature.getId()).
+ * Note that the index treats string and numeric identifiers as the same. So
+ * `source.getFeatureById(2)` will return a feature with id `'2'` or `2`.
+ *
+ * @param {string|number} id Feature identifier.
+ * @return {ol.Feature} The feature (or `null` if not found).
+ * @api stable
+ */
+ol.source.Vector.prototype.getFeatureById = function(id) {
+ var feature = this.idIndex_[id.toString()];
+ return feature !== undefined ? feature : null;
+};
+
+
+/**
+ * Get the format associated with this source.
+ *
+ * @return {ol.format.Feature|undefined} The feature format.
+ * @api
+ */
+ol.source.Vector.prototype.getFormat = function() {
+ return this.format_;
+};
+
+
+/**
+ * Get the url associated with this source.
+ *
+ * @return {string|ol.FeatureUrlFunction|undefined} The url.
+ * @api
+ */
+ol.source.Vector.prototype.getUrl = function() {
+ return this.url_;
+};
+
+
+/**
+ * @param {ol.events.Event} event Event.
+ * @private
+ */
+ol.source.Vector.prototype.handleFeatureChange_ = function(event) {
+ var feature = /** @type {ol.Feature} */ (event.target);
+ var featureKey = goog.getUid(feature).toString();
+ var geometry = feature.getGeometry();
+ if (!geometry) {
+ if (!(featureKey in this.nullGeometryFeatures_)) {
+ if (this.featuresRtree_) {
+ this.featuresRtree_.remove(feature);
+ }
+ this.nullGeometryFeatures_[featureKey] = feature;
+ }
+ } else {
+ var extent = geometry.getExtent();
+ if (featureKey in this.nullGeometryFeatures_) {
+ delete this.nullGeometryFeatures_[featureKey];
+ if (this.featuresRtree_) {
+ this.featuresRtree_.insert(extent, feature);
+ }
+ } else {
+ if (this.featuresRtree_) {
+ this.featuresRtree_.update(extent, feature);
+ }
+ }
+ }
+ var id = feature.getId();
+ var removed;
+ if (id !== undefined) {
+ var sid = id.toString();
+ if (featureKey in this.undefIdIndex_) {
+ delete this.undefIdIndex_[featureKey];
+ this.idIndex_[sid] = feature;
+ } else {
+ if (this.idIndex_[sid] !== feature) {
+ removed = this.removeFromIdIndex_(feature);
+ goog.asserts.assert(removed,
+ 'Expected feature to be removed from index');
+ this.idIndex_[sid] = feature;
+ }
+ }
+ } else {
+ if (!(featureKey in this.undefIdIndex_)) {
+ removed = this.removeFromIdIndex_(feature);
+ goog.asserts.assert(removed,
+ 'Expected feature to be removed from index');
+ this.undefIdIndex_[featureKey] = feature;
+ } else {
+ goog.asserts.assert(this.undefIdIndex_[featureKey] === feature,
+ 'feature keyed under %s in undefIdKeys', featureKey);
+ }
+ }
+ this.changed();
+ this.dispatchEvent(new ol.source.VectorEvent(
+ ol.source.VectorEventType.CHANGEFEATURE, feature));
+};
+
+
+/**
+ * @return {boolean} Is empty.
+ */
+ol.source.Vector.prototype.isEmpty = function() {
+ return this.featuresRtree_.isEmpty() &&
+ ol.object.isEmpty(this.nullGeometryFeatures_);
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {ol.proj.Projection} projection Projection.
+ */
+ol.source.Vector.prototype.loadFeatures = function(
+ extent, resolution, projection) {
+ var loadedExtentsRtree = this.loadedExtentsRtree_;
+ var extentsToLoad = this.strategy_(extent, resolution);
+ var i, ii;
+ for (i = 0, ii = extentsToLoad.length; i < ii; ++i) {
+ var extentToLoad = extentsToLoad[i];
+ var alreadyLoaded = loadedExtentsRtree.forEachInExtent(extentToLoad,
+ /**
+ * @param {{extent: ol.Extent}} object Object.
+ * @return {boolean} Contains.
+ */
+ function(object) {
+ return ol.extent.containsExtent(object.extent, extentToLoad);
+ });
+ if (!alreadyLoaded) {
+ this.loader_.call(this, extentToLoad, resolution, projection);
+ loadedExtentsRtree.insert(extentToLoad, {extent: extentToLoad.slice()});
+ }
+ }
+};
+
+
+/**
+ * Remove a single feature from the source. If you want to remove all features
+ * at once, use the {@link ol.source.Vector#clear source.clear()} method
+ * instead.
+ * @param {ol.Feature} feature Feature to remove.
+ * @api stable
+ */
+ol.source.Vector.prototype.removeFeature = function(feature) {
+ var featureKey = goog.getUid(feature).toString();
+ if (featureKey in this.nullGeometryFeatures_) {
+ delete this.nullGeometryFeatures_[featureKey];
+ } else {
+ if (this.featuresRtree_) {
+ this.featuresRtree_.remove(feature);
+ }
+ }
+ this.removeFeatureInternal(feature);
+ this.changed();
+};
+
+
+/**
+ * Remove feature without firing a `change` event.
+ * @param {ol.Feature} feature Feature.
+ * @protected
+ */
+ol.source.Vector.prototype.removeFeatureInternal = function(feature) {
+ var featureKey = goog.getUid(feature).toString();
+ goog.asserts.assert(featureKey in this.featureChangeKeys_,
+ 'featureKey exists in featureChangeKeys');
+ this.featureChangeKeys_[featureKey].forEach(ol.events.unlistenByKey);
+ delete this.featureChangeKeys_[featureKey];
+ var id = feature.getId();
+ if (id !== undefined) {
+ delete this.idIndex_[id.toString()];
+ } else {
+ delete this.undefIdIndex_[featureKey];
+ }
+ this.dispatchEvent(new ol.source.VectorEvent(
+ ol.source.VectorEventType.REMOVEFEATURE, feature));
+};
+
+
+/**
+ * Remove a feature from the id index. Called internally when the feature id
+ * may have changed.
+ * @param {ol.Feature} feature The feature.
+ * @return {boolean} Removed the feature from the index.
+ * @private
+ */
+ol.source.Vector.prototype.removeFromIdIndex_ = function(feature) {
+ var removed = false;
+ for (var id in this.idIndex_) {
+ if (this.idIndex_[id] === feature) {
+ delete this.idIndex_[id];
+ removed = true;
+ break;
+ }
+ }
+ return removed;
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.source.Vector} instances are instances of this
+ * type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.source.VectorEvent}
+ * @param {string} type Type.
+ * @param {ol.Feature=} opt_feature Feature.
+ */
+ol.source.VectorEvent = function(type, opt_feature) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The feature being added or removed.
+ * @type {ol.Feature|undefined}
+ * @api stable
+ */
+ this.feature = opt_feature;
+
+};
+ol.inherits(ol.source.VectorEvent, ol.events.Event);
+
+goog.provide('ol.source.ImageVector');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('goog.vec.Mat4');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.render.canvas.ReplayGroup');
+goog.require('ol.renderer.vector');
+goog.require('ol.source.ImageCanvas');
+goog.require('ol.source.Vector');
+goog.require('ol.style.Style');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @classdesc
+ * An image source whose images are canvas elements into which vector features
+ * read from a vector source (`ol.source.Vector`) are drawn. An
+ * `ol.source.ImageVector` object is to be used as the `source` of an image
+ * layer (`ol.layer.Image`). Image layers are rotated, scaled, and translated,
+ * as opposed to being re-rendered, during animations and interactions. So, like
+ * any other image layer, an image layer configured with an
+ * `ol.source.ImageVector` will exhibit this behaviour. This is in contrast to a
+ * vector layer, where vector features are re-drawn during animations and
+ * interactions.
+ *
+ * @constructor
+ * @extends {ol.source.ImageCanvas}
+ * @param {olx.source.ImageVectorOptions} options Options.
+ * @api
+ */
+ol.source.ImageVector = function(options) {
+
+ /**
+ * @private
+ * @type {ol.source.Vector}
+ */
+ this.source_ = options.source;
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.canvasContext_ = ol.dom.createCanvasContext2D();
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.canvasSize_ = [0, 0];
+
+ /**
+ * @private
+ * @type {ol.render.canvas.ReplayGroup}
+ */
+ this.replayGroup_ = null;
+
+ ol.source.ImageCanvas.call(this, {
+ attributions: options.attributions,
+ canvasFunction: this.canvasFunctionInternal_.bind(this),
+ logo: options.logo,
+ projection: options.projection,
+ ratio: options.ratio,
+ resolutions: options.resolutions,
+ state: this.source_.getState()
+ });
+
+ /**
+ * User provided style.
+ * @type {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction}
+ * @private
+ */
+ this.style_ = null;
+
+ /**
+ * Style function for use within the library.
+ * @type {ol.StyleFunction|undefined}
+ * @private
+ */
+ this.styleFunction_ = undefined;
+
+ this.setStyle(options.style);
+
+ ol.events.listen(this.source_, ol.events.EventType.CHANGE,
+ this.handleSourceChange_, this);
+
+};
+ol.inherits(ol.source.ImageVector, ol.source.ImageCanvas);
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.Size} size Size.
+ * @param {ol.proj.Projection} projection Projection;
+ * @return {HTMLCanvasElement} Canvas element.
+ * @private
+ */
+ol.source.ImageVector.prototype.canvasFunctionInternal_ = function(extent, resolution, pixelRatio, size, projection) {
+
+ var replayGroup = new ol.render.canvas.ReplayGroup(
+ ol.renderer.vector.getTolerance(resolution, pixelRatio), extent,
+ resolution);
+
+ this.source_.loadFeatures(extent, resolution, projection);
+
+ var loading = false;
+ this.source_.forEachFeatureInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ */
+ function(feature) {
+ loading = loading ||
+ this.renderFeature_(feature, resolution, pixelRatio, replayGroup);
+ }, this);
+ replayGroup.finish();
+
+ if (loading) {
+ return null;
+ }
+
+ if (this.canvasSize_[0] != size[0] || this.canvasSize_[1] != size[1]) {
+ this.canvasContext_.canvas.width = size[0];
+ this.canvasContext_.canvas.height = size[1];
+ this.canvasSize_[0] = size[0];
+ this.canvasSize_[1] = size[1];
+ } else {
+ this.canvasContext_.clearRect(0, 0, size[0], size[1]);
+ }
+
+ var transform = this.getTransform_(ol.extent.getCenter(extent),
+ resolution, pixelRatio, size);
+ replayGroup.replay(this.canvasContext_, pixelRatio, transform, 0, {});
+
+ this.replayGroup_ = replayGroup;
+
+ return this.canvasContext_.canvas;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageVector.prototype.forEachFeatureAtCoordinate = function(
+ coordinate, resolution, rotation, skippedFeatureUids, callback) {
+ if (!this.replayGroup_) {
+ return undefined;
+ } else {
+ /** @type {Object.<string, boolean>} */
+ var features = {};
+ return this.replayGroup_.forEachFeatureAtCoordinate(
+ coordinate, resolution, 0, skippedFeatureUids,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ goog.asserts.assert(feature !== undefined, 'passed a feature');
+ var key = goog.getUid(feature).toString();
+ if (!(key in features)) {
+ features[key] = true;
+ return callback(feature);
+ }
+ });
+ }
+};
+
+
+/**
+ * Get a reference to the wrapped source.
+ * @return {ol.source.Vector} Source.
+ * @api
+ */
+ol.source.ImageVector.prototype.getSource = function() {
+ return this.source_;
+};
+
+
+/**
+ * Get the style for features. This returns whatever was passed to the `style`
+ * option at construction or to the `setStyle` method.
+ * @return {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction}
+ * Layer style.
+ * @api stable
+ */
+ol.source.ImageVector.prototype.getStyle = function() {
+ return this.style_;
+};
+
+
+/**
+ * Get the style function.
+ * @return {ol.StyleFunction|undefined} Layer style function.
+ * @api stable
+ */
+ol.source.ImageVector.prototype.getStyleFunction = function() {
+ return this.styleFunction_;
+};
+
+
+/**
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.Size} size Size.
+ * @return {!goog.vec.Mat4.Number} Transform.
+ * @private
+ */
+ol.source.ImageVector.prototype.getTransform_ = function(center, resolution, pixelRatio, size) {
+ return ol.vec.Mat4.makeTransform2D(this.transform_,
+ size[0] / 2, size[1] / 2,
+ pixelRatio / resolution, -pixelRatio / resolution,
+ 0,
+ -center[0], -center[1]);
+};
+
+
+/**
+ * Handle changes in image style state.
+ * @param {ol.events.Event} event Image style change event.
+ * @private
+ */
+ol.source.ImageVector.prototype.handleImageChange_ = function(event) {
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.source.ImageVector.prototype.handleSourceChange_ = function() {
+ // setState will trigger a CHANGE event, so we always rely
+ // change events by calling setState.
+ this.setState(this.source_.getState());
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.render.canvas.ReplayGroup} replayGroup Replay group.
+ * @return {boolean} `true` if an image is loading.
+ * @private
+ */
+ol.source.ImageVector.prototype.renderFeature_ = function(feature, resolution, pixelRatio, replayGroup) {
+ var styles;
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction.call(feature, resolution);
+ } else if (this.styleFunction_) {
+ styles = this.styleFunction_(feature, resolution);
+ }
+ if (!styles) {
+ return false;
+ }
+ var i, ii, loading = false;
+ if (!Array.isArray(styles)) {
+ styles = [styles];
+ }
+ for (i = 0, ii = styles.length; i < ii; ++i) {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles[i],
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleImageChange_, this) || loading;
+ }
+ return loading;
+};
+
+
+/**
+ * Set the style for features. This can be a single style object, an array
+ * of styles, or a function that takes a feature and resolution and returns
+ * an array of styles. If it is `undefined` the default style is used. If
+ * it is `null` the layer has no style (a `null` style), so only features
+ * that have their own styles will be rendered in the layer. See
+ * {@link ol.style} for information on the default style.
+ * @param {ol.style.Style|Array.<ol.style.Style>|ol.StyleFunction|undefined}
+ * style Layer style.
+ * @api stable
+ */
+ol.source.ImageVector.prototype.setStyle = function(style) {
+ this.style_ = style !== undefined ? style : ol.style.defaultStyleFunction;
+ this.styleFunction_ = !style ?
+ undefined : ol.style.createStyleFunction(this.style_);
+ this.changed();
+};
+
+goog.provide('ol.renderer.canvas.ImageLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.functions');
+goog.require('ol.ImageBase');
+goog.require('ol.ViewHint');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.layer.Image');
+goog.require('ol.proj');
+goog.require('ol.renderer.canvas.Layer');
+goog.require('ol.source.ImageVector');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.canvas.Layer}
+ * @param {ol.layer.Image} imageLayer Single image layer.
+ */
+ol.renderer.canvas.ImageLayer = function(imageLayer) {
+
+ ol.renderer.canvas.Layer.call(this, imageLayer);
+
+ /**
+ * @private
+ * @type {?ol.ImageBase}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.imageTransform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {?goog.vec.Mat4.Number}
+ */
+ this.imageTransformInv_ = null;
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.hitCanvasContext_ = null;
+
+};
+ol.inherits(ol.renderer.canvas.ImageLayer, ol.renderer.canvas.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.ImageLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ var layer = this.getLayer();
+ var source = layer.getSource();
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var skippedFeatureUids = frameState.skippedFeatureUids;
+ return source.forEachFeatureAtCoordinate(
+ coordinate, resolution, rotation, skippedFeatureUids,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ return callback.call(thisArg, feature, layer);
+ });
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.ImageLayer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
+ if (!this.getImage()) {
+ return undefined;
+ }
+
+ if (this.getLayer().getSource() instanceof ol.source.ImageVector) {
+ // for ImageVector sources use the original hit-detection logic,
+ // so that for example also transparent polygons are detected
+ var coordinate = pixel.slice();
+ ol.vec.Mat4.multVec2(
+ frameState.pixelToCoordinateMatrix, coordinate, coordinate);
+ var hasFeature = this.forEachFeatureAtCoordinate(
+ coordinate, frameState, ol.functions.TRUE, this);
+
+ if (hasFeature) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+ } else {
+ // for all other image sources directly check the image
+ if (!this.imageTransformInv_) {
+ this.imageTransformInv_ = goog.vec.Mat4.createNumber();
+ goog.vec.Mat4.invert(this.imageTransform_, this.imageTransformInv_);
+ }
+
+ var pixelOnCanvas =
+ this.getPixelOnCanvas(pixel, this.imageTransformInv_);
+
+ if (!this.hitCanvasContext_) {
+ this.hitCanvasContext_ = ol.dom.createCanvasContext2D(1, 1);
+ }
+
+ this.hitCanvasContext_.clearRect(0, 0, 1, 1);
+ this.hitCanvasContext_.drawImage(
+ this.getImage(), pixelOnCanvas[0], pixelOnCanvas[1], 1, 1, 0, 0, 1, 1);
+
+ var imageData = this.hitCanvasContext_.getImageData(0, 0, 1, 1).data;
+ if (imageData[3] > 0) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.ImageLayer.prototype.getImage = function() {
+ return !this.image_ ? null : this.image_.getImage();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.ImageLayer.prototype.getImageTransform = function() {
+ return this.imageTransform_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.ImageLayer.prototype.prepareFrame = function(frameState, layerState) {
+
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var viewCenter = viewState.center;
+ var viewResolution = viewState.resolution;
+
+ var image;
+ var imageLayer = this.getLayer();
+ goog.asserts.assertInstanceof(imageLayer, ol.layer.Image,
+ 'layer is an instance of ol.layer.Image');
+ var imageSource = imageLayer.getSource();
+
+ var hints = frameState.viewHints;
+
+ var renderedExtent = frameState.extent;
+ if (layerState.extent !== undefined) {
+ renderedExtent = ol.extent.getIntersection(
+ renderedExtent, layerState.extent);
+ }
+
+ if (!hints[ol.ViewHint.ANIMATING] && !hints[ol.ViewHint.INTERACTING] &&
+ !ol.extent.isEmpty(renderedExtent)) {
+ var projection = viewState.projection;
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ var sourceProjection = imageSource.getProjection();
+ if (sourceProjection) {
+ goog.asserts.assert(ol.proj.equivalent(projection, sourceProjection),
+ 'projection and sourceProjection are equivalent');
+ projection = sourceProjection;
+ }
+ }
+ image = imageSource.getImage(
+ renderedExtent, viewResolution, pixelRatio, projection);
+ if (image) {
+ var loaded = this.loadImage(image);
+ if (loaded) {
+ this.image_ = image;
+ }
+ }
+ }
+
+ if (this.image_) {
+ image = this.image_;
+ var imageExtent = image.getExtent();
+ var imageResolution = image.getResolution();
+ var imagePixelRatio = image.getPixelRatio();
+ var scale = pixelRatio * imageResolution /
+ (viewResolution * imagePixelRatio);
+ ol.vec.Mat4.makeTransform2D(this.imageTransform_,
+ pixelRatio * frameState.size[0] / 2,
+ pixelRatio * frameState.size[1] / 2,
+ scale, scale,
+ 0,
+ imagePixelRatio * (imageExtent[0] - viewCenter[0]) / imageResolution,
+ imagePixelRatio * (viewCenter[1] - imageExtent[3]) / imageResolution);
+ this.imageTransformInv_ = null;
+ this.updateAttributions(frameState.attributions, image.getAttributions());
+ this.updateLogos(frameState, imageSource);
+ }
+
+ return !!this.image_;
+};
+
+// FIXME find correct globalCompositeOperation
+
+goog.provide('ol.renderer.canvas.TileLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.TileRange');
+goog.require('ol.TileState');
+goog.require('ol.array');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.render.EventType');
+goog.require('ol.renderer.canvas.Layer');
+goog.require('ol.size');
+goog.require('ol.source.Tile');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.canvas.Layer}
+ * @param {ol.layer.Tile|ol.layer.VectorTile} tileLayer Tile layer.
+ */
+ol.renderer.canvas.TileLayer = function(tileLayer) {
+
+ ol.renderer.canvas.Layer.call(this, tileLayer);
+
+ /**
+ * @protected
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context = ol.dom.createCanvasContext2D();
+
+ /**
+ * @protected
+ * @type {Array.<ol.Tile|undefined>}
+ */
+ this.renderedTiles = null;
+
+ /**
+ * @protected
+ * @type {ol.Extent}
+ */
+ this.tmpExtent = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {ol.TileCoord}
+ */
+ this.tmpTileCoord_ = [0, 0, 0];
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.imageTransform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @protected
+ * @type {number}
+ */
+ this.zDirection = 0;
+
+};
+ol.inherits(ol.renderer.canvas.TileLayer, ol.renderer.canvas.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.TileLayer.prototype.composeFrame = function(
+ frameState, layerState, context) {
+ var transform = this.getTransform(frameState, 0);
+ this.dispatchPreComposeEvent(context, frameState, transform);
+ this.renderTileImages(context, frameState, layerState);
+ this.dispatchPostComposeEvent(context, frameState, transform);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.TileLayer.prototype.prepareFrame = function(
+ frameState, layerState) {
+
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+
+ var tileLayer = this.getLayer();
+ var tileSource = tileLayer.getSource();
+ goog.asserts.assertInstanceof(tileSource, ol.source.Tile,
+ 'source is an ol.source.Tile');
+ var tileGrid = tileSource.getTileGridForProjection(projection);
+ var z = tileGrid.getZForResolution(viewState.resolution, this.zDirection);
+ var tileResolution = tileGrid.getResolution(z);
+ var center = viewState.center;
+ var extent;
+ if (tileResolution == viewState.resolution) {
+ center = this.snapCenterToPixel(center, tileResolution, frameState.size);
+ extent = ol.extent.getForViewAndSize(
+ center, tileResolution, viewState.rotation, frameState.size);
+ } else {
+ extent = frameState.extent;
+ }
+
+ if (layerState.extent !== undefined) {
+ extent = ol.extent.getIntersection(extent, layerState.extent);
+ }
+ if (ol.extent.isEmpty(extent)) {
+ // Return false to prevent the rendering of the layer.
+ return false;
+ }
+
+ var tileRange = tileGrid.getTileRangeForExtentAndResolution(
+ extent, tileResolution);
+
+ /**
+ * @type {Object.<number, Object.<string, ol.Tile>>}
+ */
+ var tilesToDrawByZ = {};
+ tilesToDrawByZ[z] = {};
+
+ var findLoadedTiles = this.createLoadedTileFinder(
+ tileSource, projection, tilesToDrawByZ);
+
+ var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
+
+ var tmpExtent = ol.extent.createEmpty();
+ var tmpTileRange = new ol.TileRange(0, 0, 0, 0);
+ var childTileRange, fullyLoaded, tile, x, y;
+ var drawableTile = (
+ /**
+ * @param {!ol.Tile} tile Tile.
+ * @return {boolean} Tile is selected.
+ */
+ function(tile) {
+ var tileState = tile.getState();
+ return tileState == ol.TileState.LOADED ||
+ tileState == ol.TileState.EMPTY ||
+ tileState == ol.TileState.ERROR && !useInterimTilesOnError;
+ });
+ for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
+ for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
+ tile = tileSource.getTile(z, x, y, pixelRatio, projection);
+ if (!drawableTile(tile) && tile.interimTile) {
+ tile = tile.interimTile;
+ }
+ goog.asserts.assert(tile);
+ if (drawableTile(tile)) {
+ tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
+ continue;
+ }
+ fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
+ tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
+ if (!fullyLoaded) {
+ childTileRange = tileGrid.getTileCoordChildTileRange(
+ tile.tileCoord, tmpTileRange, tmpExtent);
+ if (childTileRange) {
+ findLoadedTiles(z + 1, childTileRange);
+ }
+ }
+
+ }
+ }
+
+ /** @type {Array.<number>} */
+ var zs = Object.keys(tilesToDrawByZ).map(Number);
+ zs.sort(ol.array.numberSafeCompareFunction);
+ var renderables = [];
+ var i, ii, currentZ, tileCoordKey, tilesToDraw;
+ for (i = 0, ii = zs.length; i < ii; ++i) {
+ currentZ = zs[i];
+ tilesToDraw = tilesToDrawByZ[currentZ];
+ for (tileCoordKey in tilesToDraw) {
+ tile = tilesToDraw[tileCoordKey];
+ if (tile.getState() == ol.TileState.LOADED) {
+ renderables.push(tile);
+ }
+ }
+ }
+ this.renderedTiles = renderables;
+
+ this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
+ this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio,
+ projection, extent, z, tileLayer.getPreload());
+ this.scheduleExpireCache(frameState, tileSource);
+ this.updateLogos(frameState, tileSource);
+
+ return true;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.TileLayer.prototype.forEachLayerAtPixel = function(
+ pixel, frameState, callback, thisArg) {
+ var canvas = this.context.canvas;
+ var size = frameState.size;
+ canvas.width = size[0];
+ canvas.height = size[1];
+ this.composeFrame(frameState, this.getLayer().getLayerState(), this.context);
+
+ var imageData = this.context.getImageData(
+ pixel[0], pixel[1], 1, 1).data;
+
+ if (imageData[3] > 0) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @protected
+ */
+ol.renderer.canvas.TileLayer.prototype.renderTileImages = function(context, frameState, layerState) {
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var center = viewState.center;
+ var projection = viewState.projection;
+ var resolution = viewState.resolution;
+ var rotation = viewState.rotation;
+ var size = frameState.size;
+ var offsetX = Math.round(pixelRatio * size[0] / 2);
+ var offsetY = Math.round(pixelRatio * size[1] / 2);
+ var pixelScale = pixelRatio / resolution;
+ var layer = this.getLayer();
+ var source = layer.getSource();
+ goog.asserts.assertInstanceof(source, ol.source.Tile,
+ 'source is an ol.source.Tile');
+ var tileGutter = source.getGutter(projection);
+ var tileGrid = source.getTileGridForProjection(projection);
+
+ var hasRenderListeners = layer.hasListener(ol.render.EventType.RENDER);
+ var renderContext = context;
+ var drawOffsetX, drawOffsetY, drawScale, drawSize;
+ if (rotation || hasRenderListeners) {
+ renderContext = this.context;
+ var renderCanvas = renderContext.canvas;
+ var drawZ = tileGrid.getZForResolution(resolution);
+ var drawTileSize = source.getTilePixelSize(drawZ, pixelRatio, projection);
+ var tileSize = ol.size.toSize(tileGrid.getTileSize(drawZ));
+ drawScale = drawTileSize[0] / tileSize[0];
+ var width = context.canvas.width * drawScale;
+ var height = context.canvas.height * drawScale;
+ // Make sure the canvas is big enough for all possible rotation angles
+ drawSize = Math.round(Math.sqrt(width * width + height * height));
+ if (renderCanvas.width != drawSize) {
+ renderCanvas.width = renderCanvas.height = drawSize;
+ } else {
+ renderContext.clearRect(0, 0, drawSize, drawSize);
+ }
+ drawOffsetX = (drawSize - width) / 2 / drawScale;
+ drawOffsetY = (drawSize - height) / 2 / drawScale;
+ pixelScale *= drawScale;
+ offsetX = Math.round(drawScale * (offsetX + drawOffsetX));
+ offsetY = Math.round(drawScale * (offsetY + drawOffsetY));
+ }
+ // for performance reasons, context.save / context.restore is not used
+ // to save and restore the transformation matrix and the opacity.
+ // see http://jsperf.com/context-save-restore-versus-variable
+ var alpha = renderContext.globalAlpha;
+ renderContext.globalAlpha = layerState.opacity;
+
+ var tilesToDraw = this.renderedTiles;
+
+ var pixelExtents;
+ var opaque = source.getOpaque(projection) && layerState.opacity == 1;
+ if (!opaque) {
+ tilesToDraw.reverse();
+ pixelExtents = [];
+ }
+
+ var extent = layerState.extent;
+ var clipped = extent !== undefined;
+ if (clipped) {
+ goog.asserts.assert(extent !== undefined,
+ 'layerState extent is defined');
+ var topLeft = ol.extent.getTopLeft(extent);
+ var topRight = ol.extent.getTopRight(extent);
+ var bottomRight = ol.extent.getBottomRight(extent);
+ var bottomLeft = ol.extent.getBottomLeft(extent);
+
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ topLeft, topLeft);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ topRight, topRight);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ bottomRight, bottomRight);
+ ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix,
+ bottomLeft, bottomLeft);
+
+ var ox = drawOffsetX || 0;
+ var oy = drawOffsetY || 0;
+ renderContext.save();
+ var cx = (renderContext.canvas.width * pixelRatio) / 2;
+ var cy = (renderContext.canvas.height * pixelRatio) / 2;
+ ol.render.canvas.rotateAtOffset(renderContext, -rotation, cx, cy);
+ renderContext.beginPath();
+ renderContext.moveTo(topLeft[0] * pixelRatio + ox, topLeft[1] * pixelRatio + oy);
+ renderContext.lineTo(topRight[0] * pixelRatio + ox, topRight[1] * pixelRatio + oy);
+ renderContext.lineTo(bottomRight[0] * pixelRatio + ox, bottomRight[1] * pixelRatio + oy);
+ renderContext.lineTo(bottomLeft[0] * pixelRatio + ox, bottomLeft[1] * pixelRatio + oy);
+ renderContext.clip();
+ ol.render.canvas.rotateAtOffset(renderContext, rotation, cx, cy);
+ }
+
+ for (var i = 0, ii = tilesToDraw.length; i < ii; ++i) {
+ var tile = tilesToDraw[i];
+ var tileCoord = tile.getTileCoord();
+ var tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent);
+ var currentZ = tileCoord[0];
+ // Calculate all insert points by tile widths from a common origin to avoid
+ // gaps caused by rounding
+ var origin = ol.extent.getBottomLeft(tileGrid.getTileCoordExtent(
+ tileGrid.getTileCoordForCoordAndZ(center, currentZ, this.tmpTileCoord_)));
+ var w = Math.round(ol.extent.getWidth(tileExtent) * pixelScale);
+ var h = Math.round(ol.extent.getHeight(tileExtent) * pixelScale);
+ var left = Math.round((tileExtent[0] - origin[0]) * pixelScale / w) * w +
+ offsetX + Math.round((origin[0] - center[0]) * pixelScale);
+ var top = Math.round((origin[1] - tileExtent[3]) * pixelScale / h) * h +
+ offsetY + Math.round((center[1] - origin[1]) * pixelScale);
+ if (!opaque) {
+ var pixelExtent = [left, top, left + w, top + h];
+ // Create a clip mask for regions in this low resolution tile that are
+ // already filled by a higher resolution tile
+ renderContext.save();
+ for (var j = 0, jj = pixelExtents.length; j < jj; ++j) {
+ var clipExtent = pixelExtents[j];
+ if (ol.extent.intersects(pixelExtent, clipExtent)) {
+ renderContext.beginPath();
+ // counter-clockwise (outer ring) for current tile
+ renderContext.moveTo(pixelExtent[0], pixelExtent[1]);
+ renderContext.lineTo(pixelExtent[0], pixelExtent[3]);
+ renderContext.lineTo(pixelExtent[2], pixelExtent[3]);
+ renderContext.lineTo(pixelExtent[2], pixelExtent[1]);
+ // clockwise (inner ring) for higher resolution tile
+ renderContext.moveTo(clipExtent[0], clipExtent[1]);
+ renderContext.lineTo(clipExtent[2], clipExtent[1]);
+ renderContext.lineTo(clipExtent[2], clipExtent[3]);
+ renderContext.lineTo(clipExtent[0], clipExtent[3]);
+ renderContext.closePath();
+ renderContext.clip();
+ }
+ }
+ pixelExtents.push(pixelExtent);
+ }
+ var tilePixelSize = source.getTilePixelSize(currentZ, pixelRatio, projection);
+ renderContext.drawImage(tile.getImage(), tileGutter, tileGutter,
+ tilePixelSize[0], tilePixelSize[1], left, top, w, h);
+ if (!opaque) {
+ renderContext.restore();
+ }
+ }
+
+ if (clipped) {
+ renderContext.restore();
+ }
+
+ if (hasRenderListeners) {
+ var dX = drawOffsetX - offsetX / drawScale + offsetX;
+ var dY = drawOffsetY - offsetY / drawScale + offsetY;
+ var imageTransform = ol.vec.Mat4.makeTransform2D(this.imageTransform_,
+ drawSize / 2 - dX, drawSize / 2 - dY, pixelScale, -pixelScale,
+ -rotation, -center[0] + dX / pixelScale, -center[1] - dY / pixelScale);
+ this.dispatchRenderEvent(renderContext, frameState, imageTransform);
+ }
+ if (rotation || hasRenderListeners) {
+ context.drawImage(renderContext.canvas, -Math.round(drawOffsetX),
+ -Math.round(drawOffsetY), drawSize / drawScale, drawSize / drawScale);
+ }
+ renderContext.globalAlpha = alpha;
+};
+
+
+/**
+ * @function
+ * @return {ol.layer.Tile|ol.layer.VectorTile}
+ */
+ol.renderer.canvas.TileLayer.prototype.getLayer;
+
+goog.provide('ol.renderer.canvas.VectorLayer');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.ViewHint');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas');
+goog.require('ol.render.canvas.ReplayGroup');
+goog.require('ol.renderer.canvas.Layer');
+goog.require('ol.renderer.vector');
+goog.require('ol.source.Vector');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.canvas.Layer}
+ * @param {ol.layer.Vector} vectorLayer Vector layer.
+ */
+ol.renderer.canvas.VectorLayer = function(vectorLayer) {
+
+ ol.renderer.canvas.Layer.call(this, vectorLayer);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.dirty_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedResolution_ = NaN;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.renderedExtent_ = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {function(ol.Feature, ol.Feature): number|null}
+ */
+ this.renderedRenderOrder_ = null;
+
+ /**
+ * @private
+ * @type {ol.render.canvas.ReplayGroup}
+ */
+ this.replayGroup_ = null;
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D();
+
+};
+ol.inherits(ol.renderer.canvas.VectorLayer, ol.renderer.canvas.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorLayer.prototype.composeFrame = function(frameState, layerState, context) {
+
+ var extent = frameState.extent;
+ var pixelRatio = frameState.pixelRatio;
+ var skippedFeatureUids = layerState.managed ?
+ frameState.skippedFeatureUids : {};
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+ var rotation = viewState.rotation;
+ var projectionExtent = projection.getExtent();
+ var vectorSource = this.getLayer().getSource();
+ goog.asserts.assertInstanceof(vectorSource, ol.source.Vector);
+
+ var transform = this.getTransform(frameState, 0);
+
+ this.dispatchPreComposeEvent(context, frameState, transform);
+
+ var replayGroup = this.replayGroup_;
+ if (replayGroup && !replayGroup.isEmpty()) {
+ var layer = this.getLayer();
+ var replayContext;
+ if (layer.hasListener(ol.render.EventType.RENDER)) {
+ // resize and clear
+ this.context_.canvas.width = context.canvas.width;
+ this.context_.canvas.height = context.canvas.height;
+ replayContext = this.context_;
+ } else {
+ replayContext = context;
+ }
+ // for performance reasons, context.save / context.restore is not used
+ // to save and restore the transformation matrix and the opacity.
+ // see http://jsperf.com/context-save-restore-versus-variable
+ var alpha = replayContext.globalAlpha;
+ replayContext.globalAlpha = layerState.opacity;
+
+ var width = frameState.size[0] * pixelRatio;
+ var height = frameState.size[1] * pixelRatio;
+ ol.render.canvas.rotateAtOffset(replayContext, -rotation,
+ width / 2, height / 2);
+ replayGroup.replay(replayContext, pixelRatio, transform, rotation,
+ skippedFeatureUids);
+ if (vectorSource.getWrapX() && projection.canWrapX() &&
+ !ol.extent.containsExtent(projectionExtent, extent)) {
+ var startX = extent[0];
+ var worldWidth = ol.extent.getWidth(projectionExtent);
+ var world = 0;
+ var offsetX;
+ while (startX < projectionExtent[0]) {
+ --world;
+ offsetX = worldWidth * world;
+ transform = this.getTransform(frameState, offsetX);
+ replayGroup.replay(replayContext, pixelRatio, transform, rotation,
+ skippedFeatureUids);
+ startX += worldWidth;
+ }
+ world = 0;
+ startX = extent[2];
+ while (startX > projectionExtent[2]) {
+ ++world;
+ offsetX = worldWidth * world;
+ transform = this.getTransform(frameState, offsetX);
+ replayGroup.replay(replayContext, pixelRatio, transform, rotation,
+ skippedFeatureUids);
+ startX -= worldWidth;
+ }
+ // restore original transform for render and compose events
+ transform = this.getTransform(frameState, 0);
+ }
+ ol.render.canvas.rotateAtOffset(replayContext, rotation,
+ width / 2, height / 2);
+
+ if (replayContext != context) {
+ this.dispatchRenderEvent(replayContext, frameState, transform);
+ context.drawImage(replayContext.canvas, 0, 0);
+ }
+ replayContext.globalAlpha = alpha;
+ }
+
+ this.dispatchPostComposeEvent(context, frameState, transform);
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ if (!this.replayGroup_) {
+ return undefined;
+ } else {
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var layer = this.getLayer();
+ /** @type {Object.<string, boolean>} */
+ var features = {};
+ return this.replayGroup_.forEachFeatureAtCoordinate(coordinate, resolution,
+ rotation, {},
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ goog.asserts.assert(feature !== undefined, 'received a feature');
+ var key = goog.getUid(feature).toString();
+ if (!(key in features)) {
+ features[key] = true;
+ return callback.call(thisArg, feature, layer);
+ }
+ });
+ }
+};
+
+
+/**
+ * Handle changes in image style state.
+ * @param {ol.events.Event} event Image style change event.
+ * @private
+ */
+ol.renderer.canvas.VectorLayer.prototype.handleStyleImageChange_ = function(event) {
+ this.renderIfReadyAndVisible();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorLayer.prototype.prepareFrame = function(frameState, layerState) {
+
+ var vectorLayer = /** @type {ol.layer.Vector} */ (this.getLayer());
+ goog.asserts.assertInstanceof(vectorLayer, ol.layer.Vector,
+ 'layer is an instance of ol.layer.Vector');
+ var vectorSource = vectorLayer.getSource();
+
+ this.updateAttributions(
+ frameState.attributions, vectorSource.getAttributions());
+ this.updateLogos(frameState, vectorSource);
+
+ var animating = frameState.viewHints[ol.ViewHint.ANIMATING];
+ var interacting = frameState.viewHints[ol.ViewHint.INTERACTING];
+ var updateWhileAnimating = vectorLayer.getUpdateWhileAnimating();
+ var updateWhileInteracting = vectorLayer.getUpdateWhileInteracting();
+
+ if (!this.dirty_ && (!updateWhileAnimating && animating) ||
+ (!updateWhileInteracting && interacting)) {
+ return true;
+ }
+
+ var frameStateExtent = frameState.extent;
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+ var resolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var vectorLayerRevision = vectorLayer.getRevision();
+ var vectorLayerRenderBuffer = vectorLayer.getRenderBuffer();
+ var vectorLayerRenderOrder = vectorLayer.getRenderOrder();
+
+ if (vectorLayerRenderOrder === undefined) {
+ vectorLayerRenderOrder = ol.renderer.vector.defaultOrder;
+ }
+
+ var extent = ol.extent.buffer(frameStateExtent,
+ vectorLayerRenderBuffer * resolution);
+ var projectionExtent = viewState.projection.getExtent();
+
+ if (vectorSource.getWrapX() && viewState.projection.canWrapX() &&
+ !ol.extent.containsExtent(projectionExtent, frameState.extent)) {
+ // For the replay group, we need an extent that intersects the real world
+ // (-180° to +180°). To support geometries in a coordinate range from -540°
+ // to +540°, we add at least 1 world width on each side of the projection
+ // extent. If the viewport is wider than the world, we need to add half of
+ // the viewport width to make sure we cover the whole viewport.
+ var worldWidth = ol.extent.getWidth(projectionExtent);
+ var buffer = Math.max(ol.extent.getWidth(extent) / 2, worldWidth);
+ extent[0] = projectionExtent[0] - buffer;
+ extent[2] = projectionExtent[2] + buffer;
+ }
+
+ if (!this.dirty_ &&
+ this.renderedResolution_ == resolution &&
+ this.renderedRevision_ == vectorLayerRevision &&
+ this.renderedRenderOrder_ == vectorLayerRenderOrder &&
+ ol.extent.containsExtent(this.renderedExtent_, extent)) {
+ return true;
+ }
+
+ this.replayGroup_ = null;
+
+ this.dirty_ = false;
+
+ var replayGroup =
+ new ol.render.canvas.ReplayGroup(
+ ol.renderer.vector.getTolerance(resolution, pixelRatio), extent,
+ resolution, vectorLayer.getRenderBuffer());
+ vectorSource.loadFeatures(extent, resolution, projection);
+ /**
+ * @param {ol.Feature} feature Feature.
+ * @this {ol.renderer.canvas.VectorLayer}
+ */
+ var renderFeature = function(feature) {
+ var styles;
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction.call(feature, resolution);
+ } else {
+ styleFunction = vectorLayer.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction(feature, resolution);
+ }
+ }
+ if (styles) {
+ var dirty = this.renderFeature(
+ feature, resolution, pixelRatio, styles, replayGroup);
+ this.dirty_ = this.dirty_ || dirty;
+ }
+ };
+ if (vectorLayerRenderOrder) {
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ vectorSource.forEachFeatureInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ */
+ function(feature) {
+ features.push(feature);
+ }, this);
+ features.sort(vectorLayerRenderOrder);
+ features.forEach(renderFeature, this);
+ } else {
+ vectorSource.forEachFeatureInExtent(extent, renderFeature, this);
+ }
+ replayGroup.finish();
+
+ this.renderedResolution_ = resolution;
+ this.renderedRevision_ = vectorLayerRevision;
+ this.renderedRenderOrder_ = vectorLayerRenderOrder;
+ this.renderedExtent_ = extent;
+ this.replayGroup_ = replayGroup;
+
+ return true;
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {(ol.style.Style|Array.<ol.style.Style>)} styles The style or array of
+ * styles.
+ * @param {ol.render.canvas.ReplayGroup} replayGroup Replay group.
+ * @return {boolean} `true` if an image is loading.
+ */
+ol.renderer.canvas.VectorLayer.prototype.renderFeature = function(feature, resolution, pixelRatio, styles, replayGroup) {
+ if (!styles) {
+ return false;
+ }
+ var loading = false;
+ if (Array.isArray(styles)) {
+ for (var i = 0, ii = styles.length; i < ii; ++i) {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles[i],
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ } else {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles,
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ return loading;
+};
+
+goog.provide('ol.TileUrlFunction');
+
+goog.require('goog.asserts');
+goog.require('ol.math');
+goog.require('ol.tilecoord');
+
+
+/**
+ * @param {string} template Template.
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @return {ol.TileUrlFunctionType} Tile URL function.
+ */
+ol.TileUrlFunction.createFromTemplate = function(template, tileGrid) {
+ var zRegEx = /\{z\}/g;
+ var xRegEx = /\{x\}/g;
+ var yRegEx = /\{y\}/g;
+ var dashYRegEx = /\{-y\}/g;
+ return (
+ /**
+ * @param {ol.TileCoord} tileCoord Tile Coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ function(tileCoord, pixelRatio, projection) {
+ if (!tileCoord) {
+ return undefined;
+ } else {
+ return template.replace(zRegEx, tileCoord[0].toString())
+ .replace(xRegEx, tileCoord[1].toString())
+ .replace(yRegEx, function() {
+ var y = -tileCoord[2] - 1;
+ return y.toString();
+ })
+ .replace(dashYRegEx, function() {
+ var z = tileCoord[0];
+ var range = tileGrid.getFullTileRange(z);
+ goog.asserts.assert(range,
+ 'The {-y} template requires a tile grid with extent');
+ var y = range.getHeight() + tileCoord[2];
+ return y.toString();
+ });
+ }
+ });
+};
+
+
+/**
+ * @param {Array.<string>} templates Templates.
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @return {ol.TileUrlFunctionType} Tile URL function.
+ */
+ol.TileUrlFunction.createFromTemplates = function(templates, tileGrid) {
+ var len = templates.length;
+ var tileUrlFunctions = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ tileUrlFunctions[i] = ol.TileUrlFunction.createFromTemplate(
+ templates[i], tileGrid);
+ }
+ return ol.TileUrlFunction.createFromTileUrlFunctions(tileUrlFunctions);
+};
+
+
+/**
+ * @param {Array.<ol.TileUrlFunctionType>} tileUrlFunctions Tile URL Functions.
+ * @return {ol.TileUrlFunctionType} Tile URL function.
+ */
+ol.TileUrlFunction.createFromTileUrlFunctions = function(tileUrlFunctions) {
+ goog.asserts.assert(tileUrlFunctions.length > 0,
+ 'Length of tile url functions should be greater than 0');
+ if (tileUrlFunctions.length === 1) {
+ return tileUrlFunctions[0];
+ }
+ return (
+ /**
+ * @param {ol.TileCoord} tileCoord Tile Coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ function(tileCoord, pixelRatio, projection) {
+ if (!tileCoord) {
+ return undefined;
+ } else {
+ var h = ol.tilecoord.hash(tileCoord);
+ var index = ol.math.modulo(h, tileUrlFunctions.length);
+ return tileUrlFunctions[index](tileCoord, pixelRatio, projection);
+ }
+ });
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ol.TileUrlFunction.nullTileUrlFunction = function(tileCoord, pixelRatio, projection) {
+ return undefined;
+};
+
+
+/**
+ * @param {string} url URL.
+ * @return {Array.<string>} Array of urls.
+ */
+ol.TileUrlFunction.expandUrl = function(url) {
+ var urls = [];
+ var match = /\{(\d)-(\d)\}/.exec(url) || /\{([a-z])-([a-z])\}/.exec(url);
+ if (match) {
+ var startCharCode = match[1].charCodeAt(0);
+ var stopCharCode = match[2].charCodeAt(0);
+ var charCode;
+ for (charCode = startCharCode; charCode <= stopCharCode; ++charCode) {
+ urls.push(url.replace(match[0], String.fromCharCode(charCode)));
+ }
+ } else {
+ urls.push(url);
+ }
+ return urls;
+};
+
+goog.provide('ol.source.UrlTile');
+
+goog.require('ol.events');
+goog.require('ol.TileState');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.source.Tile');
+goog.require('ol.source.TileEvent');
+
+
+/**
+ * @classdesc
+ * Base class for sources providing tiles divided into a tile grid over http.
+ *
+ * @constructor
+ * @fires ol.source.TileEvent
+ * @extends {ol.source.Tile}
+ * @param {ol.SourceUrlTileOptions} options Image tile options.
+ */
+ol.source.UrlTile = function(options) {
+
+ ol.source.Tile.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ extent: options.extent,
+ logo: options.logo,
+ opaque: options.opaque,
+ projection: options.projection,
+ state: options.state,
+ tileGrid: options.tileGrid,
+ tilePixelRatio: options.tilePixelRatio,
+ wrapX: options.wrapX
+ });
+
+ /**
+ * @protected
+ * @type {ol.TileLoadFunctionType}
+ */
+ this.tileLoadFunction = options.tileLoadFunction;
+
+ /**
+ * @protected
+ * @type {ol.TileUrlFunctionType}
+ */
+ this.tileUrlFunction = this.fixedTileUrlFunction ?
+ this.fixedTileUrlFunction.bind(this) :
+ ol.TileUrlFunction.nullTileUrlFunction;
+
+ /**
+ * @protected
+ * @type {!Array.<string>|null}
+ */
+ this.urls = null;
+
+ if (options.urls) {
+ this.setUrls(options.urls);
+ } else if (options.url) {
+ this.setUrl(options.url);
+ }
+ if (options.tileUrlFunction) {
+ this.setTileUrlFunction(options.tileUrlFunction);
+ }
+
+};
+ol.inherits(ol.source.UrlTile, ol.source.Tile);
+
+
+/**
+ * @type {ol.TileUrlFunctionType|undefined}
+ * @protected
+ */
+ol.source.UrlTile.prototype.fixedTileUrlFunction;
+
+/**
+ * Return the tile load function of the source.
+ * @return {ol.TileLoadFunctionType} TileLoadFunction
+ * @api
+ */
+ol.source.UrlTile.prototype.getTileLoadFunction = function() {
+ return this.tileLoadFunction;
+};
+
+
+/**
+ * Return the tile URL function of the source.
+ * @return {ol.TileUrlFunctionType} TileUrlFunction
+ * @api
+ */
+ol.source.UrlTile.prototype.getTileUrlFunction = function() {
+ return this.tileUrlFunction;
+};
+
+
+/**
+ * Return the URLs used for this source.
+ * When a tileUrlFunction is used instead of url or urls,
+ * null will be returned.
+ * @return {!Array.<string>|null} URLs.
+ * @api
+ */
+ol.source.UrlTile.prototype.getUrls = function() {
+ return this.urls;
+};
+
+
+/**
+ * Handle tile change events.
+ * @param {ol.events.Event} event Event.
+ * @protected
+ */
+ol.source.UrlTile.prototype.handleTileChange = function(event) {
+ var tile = /** @type {ol.Tile} */ (event.target);
+ switch (tile.getState()) {
+ case ol.TileState.LOADING:
+ this.dispatchEvent(
+ new ol.source.TileEvent(ol.source.TileEventType.TILELOADSTART, tile));
+ break;
+ case ol.TileState.LOADED:
+ this.dispatchEvent(
+ new ol.source.TileEvent(ol.source.TileEventType.TILELOADEND, tile));
+ break;
+ case ol.TileState.ERROR:
+ this.dispatchEvent(
+ new ol.source.TileEvent(ol.source.TileEventType.TILELOADERROR, tile));
+ break;
+ default:
+ // pass
+ }
+};
+
+
+/**
+ * Set the tile load function of the source.
+ * @param {ol.TileLoadFunctionType} tileLoadFunction Tile load function.
+ * @api
+ */
+ol.source.UrlTile.prototype.setTileLoadFunction = function(tileLoadFunction) {
+ this.tileCache.clear();
+ this.tileLoadFunction = tileLoadFunction;
+ this.changed();
+};
+
+
+/**
+ * Set the tile URL function of the source.
+ * @param {ol.TileUrlFunctionType} tileUrlFunction Tile URL function.
+ * @param {string=} opt_key Optional new tile key for the source.
+ * @api
+ */
+ol.source.UrlTile.prototype.setTileUrlFunction = function(tileUrlFunction, opt_key) {
+ this.tileUrlFunction = tileUrlFunction;
+ if (typeof opt_key !== 'undefined') {
+ this.setKey(opt_key);
+ } else {
+ this.changed();
+ }
+};
+
+
+/**
+ * Set the URL to use for requests.
+ * @param {string} url URL.
+ * @api stable
+ */
+ol.source.UrlTile.prototype.setUrl = function(url) {
+ var urls = this.urls = ol.TileUrlFunction.expandUrl(url);
+ this.setTileUrlFunction(this.fixedTileUrlFunction ?
+ this.fixedTileUrlFunction.bind(this) :
+ ol.TileUrlFunction.createFromTemplates(urls, this.tileGrid), url);
+};
+
+
+/**
+ * Set the URLs to use for requests.
+ * @param {Array.<string>} urls URLs.
+ * @api stable
+ */
+ol.source.UrlTile.prototype.setUrls = function(urls) {
+ this.urls = urls;
+ var key = urls.join('\n');
+ this.setTileUrlFunction(this.fixedTileUrlFunction ?
+ this.fixedTileUrlFunction.bind(this) :
+ ol.TileUrlFunction.createFromTemplates(urls, this.tileGrid), key);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.UrlTile.prototype.useTile = function(z, x, y) {
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ if (this.tileCache.containsKey(tileCoordKey)) {
+ this.tileCache.get(tileCoordKey);
+ }
+};
+
+goog.provide('ol.source.VectorTile');
+
+goog.require('ol.TileState');
+goog.require('ol.VectorTile');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.featureloader');
+goog.require('ol.size');
+goog.require('ol.source.UrlTile');
+
+
+/**
+ * @classdesc
+ * Class for layer sources providing vector data divided into a tile grid, to be
+ * used with {@link ol.layer.VectorTile}. Although this source receives tiles
+ * with vector features from the server, it is not meant for feature editing.
+ * Features are optimized for rendering, their geometries are clipped at or near
+ * tile boundaries and simplified for a view resolution. See
+ * {@link ol.source.Vector} for vector sources that are suitable for feature
+ * editing.
+ *
+ * @constructor
+ * @fires ol.source.TileEvent
+ * @extends {ol.source.UrlTile}
+ * @param {olx.source.VectorTileOptions} options Vector tile options.
+ * @api
+ */
+ol.source.VectorTile = function(options) {
+
+ ol.source.UrlTile.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize !== undefined ? options.cacheSize : 128,
+ extent: options.extent,
+ logo: options.logo,
+ opaque: false,
+ projection: options.projection,
+ state: options.state,
+ tileGrid: options.tileGrid,
+ tileLoadFunction: options.tileLoadFunction ?
+ options.tileLoadFunction : ol.source.VectorTile.defaultTileLoadFunction,
+ tileUrlFunction: options.tileUrlFunction,
+ tilePixelRatio: options.tilePixelRatio,
+ url: options.url,
+ urls: options.urls,
+ wrapX: options.wrapX === undefined ? true : options.wrapX
+ });
+
+ /**
+ * @private
+ * @type {ol.format.Feature}
+ */
+ this.format_ = options.format ? options.format : null;
+
+ /**
+ * @protected
+ * @type {function(new: ol.VectorTile, ol.TileCoord, ol.TileState, string,
+ * ol.format.Feature, ol.TileLoadFunctionType)}
+ */
+ this.tileClass = options.tileClass ? options.tileClass : ol.VectorTile;
+
+};
+ol.inherits(ol.source.VectorTile, ol.source.UrlTile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.VectorTile.prototype.getTile = function(z, x, y, pixelRatio, projection) {
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ if (this.tileCache.containsKey(tileCoordKey)) {
+ return /** @type {!ol.Tile} */ (this.tileCache.get(tileCoordKey));
+ } else {
+ var tileCoord = [z, x, y];
+ var urlTileCoord = this.getTileCoordForTileUrlFunction(
+ tileCoord, projection);
+ var tileUrl = urlTileCoord ?
+ this.tileUrlFunction(urlTileCoord, pixelRatio, projection) : undefined;
+ var tile = new this.tileClass(
+ tileCoord,
+ tileUrl !== undefined ? ol.TileState.IDLE : ol.TileState.EMPTY,
+ tileUrl !== undefined ? tileUrl : '',
+ this.format_, this.tileLoadFunction);
+ ol.events.listen(tile, ol.events.EventType.CHANGE,
+ this.handleTileChange, this);
+
+ this.tileCache.set(tileCoordKey, tile);
+ return tile;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.VectorTile.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
+ var tileSize = ol.size.toSize(this.tileGrid.getTileSize(z));
+ return [tileSize[0] * pixelRatio, tileSize[1] * pixelRatio];
+};
+
+
+/**
+ * @param {ol.VectorTile} vectorTile Vector tile.
+ * @param {string} url URL.
+ */
+ol.source.VectorTile.defaultTileLoadFunction = function(vectorTile, url) {
+ vectorTile.setLoader(ol.featureloader.tile(url, vectorTile.getFormat()));
+};
+
+goog.provide('ol.renderer.canvas.VectorTileLayer');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('goog.vec.Mat4');
+goog.require('ol.Feature');
+goog.require('ol.VectorTile');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.layer.VectorTile');
+goog.require('ol.proj');
+goog.require('ol.proj.Units');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas');
+goog.require('ol.render.canvas.ReplayGroup');
+goog.require('ol.renderer.canvas.TileLayer');
+goog.require('ol.renderer.vector');
+goog.require('ol.size');
+goog.require('ol.source.VectorTile');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @const
+ * @type {!Object.<string, Array.<ol.render.ReplayType>>}
+ */
+ol.renderer.canvas.IMAGE_REPLAYS = {
+ 'image': ol.render.REPLAY_ORDER,
+ 'hybrid': [ol.render.ReplayType.POLYGON, ol.render.ReplayType.LINE_STRING]
+};
+
+
+/**
+ * @const
+ * @type {!Object.<string, Array.<ol.render.ReplayType>>}
+ */
+ol.renderer.canvas.VECTOR_REPLAYS = {
+ 'hybrid': [ol.render.ReplayType.IMAGE, ol.render.ReplayType.TEXT],
+ 'vector': ol.render.REPLAY_ORDER
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.canvas.TileLayer}
+ * @param {ol.layer.VectorTile} layer VectorTile layer.
+ */
+ol.renderer.canvas.VectorTileLayer = function(layer) {
+
+ ol.renderer.canvas.TileLayer.call(this, layer);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.dirty_ = false;
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.tmpTransform_ = goog.vec.Mat4.createNumber();
+
+ // Use lower resolution for pure vector rendering. Closest resolution otherwise.
+ this.zDirection =
+ layer.getRenderMode() == ol.layer.VectorTileRenderType.VECTOR ? 1 : 0;
+
+};
+ol.inherits(ol.renderer.canvas.VectorTileLayer, ol.renderer.canvas.TileLayer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.composeFrame = function(
+ frameState, layerState, context) {
+ var transform = this.getTransform(frameState, 0);
+ this.dispatchPreComposeEvent(context, frameState, transform);
+ var renderMode = this.getLayer().getRenderMode();
+ if (renderMode !== ol.layer.VectorTileRenderType.VECTOR) {
+ this.renderTileImages(context, frameState, layerState);
+ }
+ if (renderMode !== ol.layer.VectorTileRenderType.IMAGE) {
+ this.renderTileReplays_(context, frameState, layerState);
+ }
+ this.dispatchPostComposeEvent(context, frameState, transform);
+};
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @private
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.renderTileReplays_ = function(
+ context, frameState, layerState) {
+
+ var layer = this.getLayer();
+ var replays = ol.renderer.canvas.VECTOR_REPLAYS[layer.getRenderMode()];
+ var pixelRatio = frameState.pixelRatio;
+ var skippedFeatureUids = layerState.managed ?
+ frameState.skippedFeatureUids : {};
+ var viewState = frameState.viewState;
+ var center = viewState.center;
+ var resolution = viewState.resolution;
+ var rotation = viewState.rotation;
+ var size = frameState.size;
+ var pixelScale = pixelRatio / resolution;
+ var source = layer.getSource();
+ goog.asserts.assertInstanceof(source, ol.source.VectorTile,
+ 'Source is an ol.source.VectorTile');
+ var tilePixelRatio = source.getTilePixelRatio(pixelRatio);
+
+ var transform = this.getTransform(frameState, 0);
+
+ var replayContext;
+ if (layer.hasListener(ol.render.EventType.RENDER)) {
+ // resize and clear
+ this.context.canvas.width = context.canvas.width;
+ this.context.canvas.height = context.canvas.height;
+ replayContext = this.context;
+ } else {
+ replayContext = context;
+ }
+ // for performance reasons, context.save / context.restore is not used
+ // to save and restore the transformation matrix and the opacity.
+ // see http://jsperf.com/context-save-restore-versus-variable
+ var alpha = replayContext.globalAlpha;
+ replayContext.globalAlpha = layerState.opacity;
+
+ var tilesToDraw = this.renderedTiles;
+ var tileGrid = source.getTileGrid();
+
+ var currentZ, i, ii, offsetX, offsetY, origin, pixelSpace, replayState;
+ var tile, tileExtent, tilePixelResolution, tileResolution, tileTransform;
+ for (i = 0, ii = tilesToDraw.length; i < ii; ++i) {
+ tile = tilesToDraw[i];
+ replayState = tile.getReplayState();
+ tileExtent = tileGrid.getTileCoordExtent(
+ tile.getTileCoord(), this.tmpExtent);
+ currentZ = tile.getTileCoord()[0];
+ pixelSpace = tile.getProjection().getUnits() == ol.proj.Units.TILE_PIXELS;
+ tileResolution = tileGrid.getResolution(currentZ);
+ tilePixelResolution = tileResolution / tilePixelRatio;
+ offsetX = Math.round(pixelRatio * size[0] / 2);
+ offsetY = Math.round(pixelRatio * size[1] / 2);
+
+ if (pixelSpace) {
+ origin = ol.extent.getTopLeft(tileExtent);
+ tileTransform = ol.vec.Mat4.makeTransform2D(this.tmpTransform_,
+ offsetX, offsetY,
+ pixelScale * tilePixelResolution,
+ pixelScale * tilePixelResolution,
+ rotation,
+ (origin[0] - center[0]) / tilePixelResolution,
+ (center[1] - origin[1]) / tilePixelResolution);
+ } else {
+ tileTransform = transform;
+ }
+ ol.render.canvas.rotateAtOffset(replayContext, -rotation, offsetX, offsetY);
+ replayState.replayGroup.replay(replayContext, pixelRatio,
+ tileTransform, rotation, skippedFeatureUids, replays);
+ ol.render.canvas.rotateAtOffset(replayContext, rotation, offsetX, offsetY);
+ }
+
+ if (replayContext != context) {
+ this.dispatchRenderEvent(replayContext, frameState, transform);
+ context.drawImage(replayContext.canvas, 0, 0);
+ }
+ replayContext.globalAlpha = alpha;
+};
+
+
+/**
+ * @param {ol.VectorTile} tile Tile.
+ * @param {olx.FrameState} frameState Frame state.
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.createReplayGroup = function(tile,
+ frameState) {
+ var layer = this.getLayer();
+ var pixelRatio = frameState.pixelRatio;
+ var projection = frameState.viewState.projection;
+ var revision = layer.getRevision();
+ var renderOrder = layer.getRenderOrder() || null;
+
+ var replayState = tile.getReplayState();
+ if (!replayState.dirty && replayState.renderedRevision == revision &&
+ replayState.renderedRenderOrder == renderOrder) {
+ return;
+ }
+
+ replayState.replayGroup = null;
+ replayState.dirty = false;
+
+ var source = layer.getSource();
+ goog.asserts.assertInstanceof(source, ol.source.VectorTile,
+ 'Source is an ol.source.VectorTile');
+ var tileGrid = source.getTileGrid();
+ var tileCoord = tile.getTileCoord();
+ var tileProjection = tile.getProjection();
+ var pixelSpace = tileProjection.getUnits() == ol.proj.Units.TILE_PIXELS;
+ var resolution = tileGrid.getResolution(tileCoord[0]);
+ var extent, reproject, tileResolution;
+ if (pixelSpace) {
+ var tilePixelRatio = tileResolution = source.getTilePixelRatio(pixelRatio);
+ var tileSize = ol.size.toSize(tileGrid.getTileSize(tileCoord[0]));
+ extent = [0, 0, tileSize[0] * tilePixelRatio, tileSize[1] * tilePixelRatio];
+ } else {
+ tileResolution = resolution;
+ extent = tileGrid.getTileCoordExtent(tileCoord);
+ if (!ol.proj.equivalent(projection, tileProjection)) {
+ reproject = true;
+ tile.setProjection(projection);
+ }
+ }
+ replayState.dirty = false;
+ var replayGroup = new ol.render.canvas.ReplayGroup(0, extent,
+ tileResolution, layer.getRenderBuffer());
+ var squaredTolerance = ol.renderer.vector.getSquaredTolerance(
+ tileResolution, pixelRatio);
+
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @this {ol.renderer.canvas.VectorTileLayer}
+ */
+ function renderFeature(feature) {
+ var styles;
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ goog.asserts.assertInstanceof(feature, ol.Feature, 'Got an ol.Feature');
+ styles = styleFunction.call(feature, resolution);
+ } else {
+ styleFunction = layer.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction(feature, resolution);
+ }
+ }
+ if (styles) {
+ if (!Array.isArray(styles)) {
+ styles = [styles];
+ }
+ var dirty = this.renderFeature(feature, squaredTolerance, styles,
+ replayGroup);
+ this.dirty_ = this.dirty_ || dirty;
+ replayState.dirty = replayState.dirty || dirty;
+ }
+ }
+
+ var features = tile.getFeatures();
+ if (renderOrder && renderOrder !== replayState.renderedRenderOrder) {
+ features.sort(renderOrder);
+ }
+ var feature;
+ for (var i = 0, ii = features.length; i < ii; ++i) {
+ feature = features[i];
+ if (reproject) {
+ feature.getGeometry().transform(tileProjection, projection);
+ }
+ renderFeature.call(this, feature);
+ }
+
+ replayGroup.finish();
+
+ replayState.renderedRevision = revision;
+ replayState.renderedRenderOrder = renderOrder;
+ replayState.replayGroup = replayGroup;
+ replayState.resolution = NaN;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ var pixelRatio = frameState.pixelRatio;
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var layer = this.getLayer();
+ /** @type {Object.<string, boolean>} */
+ var features = {};
+
+ var replayables = this.renderedTiles;
+ var source = layer.getSource();
+ goog.asserts.assertInstanceof(source, ol.source.VectorTile,
+ 'Source is an ol.source.VectorTile');
+ var tileGrid = source.getTileGrid();
+ var found, tileSpaceCoordinate;
+ var i, ii, origin, replayGroup;
+ var tile, tileCoord, tileExtent, tilePixelRatio, tileResolution;
+ for (i = 0, ii = replayables.length; i < ii; ++i) {
+ tile = replayables[i];
+ tileCoord = tile.getTileCoord();
+ tileExtent = source.getTileGrid().getTileCoordExtent(tileCoord,
+ this.tmpExtent);
+ if (!ol.extent.containsCoordinate(tileExtent, coordinate)) {
+ continue;
+ }
+ if (tile.getProjection().getUnits() === ol.proj.Units.TILE_PIXELS) {
+ origin = ol.extent.getTopLeft(tileExtent);
+ tilePixelRatio = source.getTilePixelRatio(pixelRatio);
+ tileResolution = tileGrid.getResolution(tileCoord[0]) / tilePixelRatio;
+ tileSpaceCoordinate = [
+ (coordinate[0] - origin[0]) / tileResolution,
+ (origin[1] - coordinate[1]) / tileResolution
+ ];
+ resolution = tilePixelRatio;
+ } else {
+ tileSpaceCoordinate = coordinate;
+ }
+ replayGroup = tile.getReplayState().replayGroup;
+ found = found || replayGroup.forEachFeatureAtCoordinate(
+ tileSpaceCoordinate, resolution, rotation, {},
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ goog.asserts.assert(feature, 'received a feature');
+ var key = goog.getUid(feature).toString();
+ if (!(key in features)) {
+ features[key] = true;
+ return callback.call(thisArg, feature, layer);
+ }
+ });
+ }
+ return found;
+};
+
+
+/**
+ * Handle changes in image style state.
+ * @param {ol.events.Event} event Image style change event.
+ * @private
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.handleStyleImageChange_ = function(event) {
+ this.renderIfReadyAndVisible();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.prepareFrame = function(frameState, layerState) {
+ var prepared = ol.renderer.canvas.TileLayer.prototype.prepareFrame.call(this, frameState, layerState);
+ if (prepared) {
+ var skippedFeatures = Object.keys(frameState.skippedFeatureUids_ || {});
+ for (var i = 0, ii = this.renderedTiles.length; i < ii; ++i) {
+ var tile = this.renderedTiles[i];
+ goog.asserts.assertInstanceof(tile, ol.VectorTile, 'got an ol.VectorTile');
+ this.createReplayGroup(tile, frameState);
+ this.renderTileImage_(tile, frameState, layerState, skippedFeatures);
+ }
+ }
+ return prepared;
+};
+
+
+/**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {(ol.style.Style|Array.<ol.style.Style>)} styles The style or array of
+ * styles.
+ * @param {ol.render.canvas.ReplayGroup} replayGroup Replay group.
+ * @return {boolean} `true` if an image is loading.
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.renderFeature = function(feature, squaredTolerance, styles, replayGroup) {
+ if (!styles) {
+ return false;
+ }
+ var loading = false;
+ if (Array.isArray(styles)) {
+ for (var i = 0, ii = styles.length; i < ii; ++i) {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles[i], squaredTolerance,
+ this.handleStyleImageChange_, this) || loading;
+ }
+ } else {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles, squaredTolerance,
+ this.handleStyleImageChange_, this) || loading;
+ }
+ return loading;
+};
+
+
+/**
+ * @param {ol.VectorTile} tile Tile.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @param {Array.<string>} skippedFeatures Skipped features.
+ * @private
+ */
+ol.renderer.canvas.VectorTileLayer.prototype.renderTileImage_ = function(
+ tile, frameState, layerState, skippedFeatures) {
+ var layer = this.getLayer();
+ var replays = ol.renderer.canvas.IMAGE_REPLAYS[layer.getRenderMode()];
+ if (!replays) {
+ // do not create an image in 'vector' mode
+ return;
+ }
+ var pixelRatio = frameState.pixelRatio;
+ var replayState = tile.getReplayState();
+ var revision = layer.getRevision();
+ if (!ol.array.equals(replayState.skippedFeatures, skippedFeatures) ||
+ replayState.renderedTileRevision !== revision) {
+ replayState.skippedFeatures = skippedFeatures;
+ replayState.renderedTileRevision = revision;
+ var tileContext = tile.getContext();
+ var source = layer.getSource();
+ var tileGrid = source.getTileGrid();
+ var currentZ = tile.getTileCoord()[0];
+ var resolution = tileGrid.getResolution(currentZ);
+ var tileSize = ol.size.toSize(tileGrid.getTileSize(currentZ));
+ var tileResolution = tileGrid.getResolution(currentZ);
+ var resolutionRatio = tileResolution / resolution;
+ var width = tileSize[0] * pixelRatio * resolutionRatio;
+ var height = tileSize[1] * pixelRatio * resolutionRatio;
+ tileContext.canvas.width = width / resolutionRatio + 0.5;
+ tileContext.canvas.height = height / resolutionRatio + 0.5;
+ tileContext.scale(1 / resolutionRatio, 1 / resolutionRatio);
+ tileContext.translate(width / 2, height / 2);
+ var pixelSpace = tile.getProjection().getUnits() == ol.proj.Units.TILE_PIXELS;
+ var pixelScale = pixelRatio / resolution;
+ var tilePixelRatio = source.getTilePixelRatio(pixelRatio);
+ var tilePixelResolution = tileResolution / tilePixelRatio;
+ var tileExtent = tileGrid.getTileCoordExtent(
+ tile.getTileCoord(), this.tmpExtent);
+ var tileTransform;
+ if (pixelSpace) {
+ tileTransform = ol.vec.Mat4.makeTransform2D(this.tmpTransform_,
+ 0, 0,
+ pixelScale * tilePixelResolution, pixelScale * tilePixelResolution,
+ 0,
+ -tileSize[0] * tilePixelRatio / 2, -tileSize[1] * tilePixelRatio / 2);
+ } else {
+ var tileCenter = ol.extent.getCenter(tileExtent);
+ tileTransform = ol.vec.Mat4.makeTransform2D(this.tmpTransform_,
+ 0, 0,
+ pixelScale, -pixelScale,
+ 0,
+ -tileCenter[0], -tileCenter[1]);
+ }
+
+ replayState.replayGroup.replay(tileContext, pixelRatio,
+ tileTransform, 0, frameState.skippedFeatureUids || {}, replays);
+ }
+};
+
+// FIXME offset panning
+
+goog.provide('ol.renderer.canvas.Map');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+goog.require('ol.RendererType');
+goog.require('ol.array');
+goog.require('ol.css');
+goog.require('ol.dom');
+goog.require('ol.layer.Image');
+goog.require('ol.layer.Layer');
+goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
+goog.require('ol.layer.VectorTile');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.renderer.Map');
+goog.require('ol.renderer.canvas.ImageLayer');
+goog.require('ol.renderer.canvas.Layer');
+goog.require('ol.renderer.canvas.TileLayer');
+goog.require('ol.renderer.canvas.VectorLayer');
+goog.require('ol.renderer.canvas.VectorTileLayer');
+goog.require('ol.source.State');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Map}
+ * @param {Element} container Container.
+ * @param {ol.Map} map Map.
+ */
+ol.renderer.canvas.Map = function(container, map) {
+
+ ol.renderer.Map.call(this, container, map);
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D();
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = this.context_.canvas;
+
+ this.canvas_.style.width = '100%';
+ this.canvas_.style.height = '100%';
+ this.canvas_.className = ol.css.CLASS_UNSELECTABLE;
+ container.insertBefore(this.canvas_, container.childNodes[0] || null);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = true;
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumber();
+
+};
+ol.inherits(ol.renderer.canvas.Map, ol.renderer.Map);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.Map.prototype.createLayerRenderer = function(layer) {
+ if (ol.ENABLE_IMAGE && layer instanceof ol.layer.Image) {
+ return new ol.renderer.canvas.ImageLayer(layer);
+ } else if (ol.ENABLE_TILE && layer instanceof ol.layer.Tile) {
+ return new ol.renderer.canvas.TileLayer(layer);
+ } else if (ol.ENABLE_VECTOR_TILE && layer instanceof ol.layer.VectorTile) {
+ return new ol.renderer.canvas.VectorTileLayer(layer);
+ } else if (ol.ENABLE_VECTOR && layer instanceof ol.layer.Vector) {
+ return new ol.renderer.canvas.VectorLayer(layer);
+ } else {
+ goog.asserts.fail('unexpected layer configuration');
+ return null;
+ }
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.canvas.Map.prototype.dispatchComposeEvent_ = function(type, frameState) {
+ var map = this.getMap();
+ var context = this.context_;
+ if (map.hasListener(type)) {
+ var extent = frameState.extent;
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var rotation = viewState.rotation;
+
+ var transform = this.getTransform(frameState);
+
+ var vectorContext = new ol.render.canvas.Immediate(context, pixelRatio,
+ extent, transform, rotation);
+ var composeEvent = new ol.render.Event(type, map, vectorContext,
+ frameState, context, null);
+ map.dispatchEvent(composeEvent);
+ }
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @protected
+ * @return {!goog.vec.Mat4.Number} Transform.
+ */
+ol.renderer.canvas.Map.prototype.getTransform = function(frameState) {
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var resolution = viewState.resolution;
+ return ol.vec.Mat4.makeTransform2D(this.transform_,
+ this.canvas_.width / 2, this.canvas_.height / 2,
+ pixelRatio / resolution, -pixelRatio / resolution,
+ -viewState.rotation,
+ -viewState.center[0], -viewState.center[1]);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.Map.prototype.getType = function() {
+ return ol.RendererType.CANVAS;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
+
+ if (!frameState) {
+ if (this.renderedVisible_) {
+ this.canvas_.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return;
+ }
+
+ var context = this.context_;
+ var pixelRatio = frameState.pixelRatio;
+ var width = Math.round(frameState.size[0] * pixelRatio);
+ var height = Math.round(frameState.size[1] * pixelRatio);
+ if (this.canvas_.width != width || this.canvas_.height != height) {
+ this.canvas_.width = width;
+ this.canvas_.height = height;
+ } else {
+ context.clearRect(0, 0, width, height);
+ }
+
+ var rotation = frameState.viewState.rotation;
+
+ this.calculateMatrices2D(frameState);
+
+ this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
+
+ var layerStatesArray = frameState.layerStatesArray;
+ ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+
+ ol.render.canvas.rotateAtOffset(context, rotation, width / 2, height / 2);
+
+ var viewResolution = frameState.viewState.resolution;
+ var i, ii, layer, layerRenderer, layerState;
+ for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
+ layerState = layerStatesArray[i];
+ layer = layerState.layer;
+ layerRenderer = this.getLayerRenderer(layer);
+ goog.asserts.assertInstanceof(layerRenderer, ol.renderer.canvas.Layer,
+ 'layerRenderer is an instance of ol.renderer.canvas.Layer');
+ if (!ol.layer.Layer.visibleAtResolution(layerState, viewResolution) ||
+ layerState.sourceState != ol.source.State.READY) {
+ continue;
+ }
+ if (layerRenderer.prepareFrame(frameState, layerState)) {
+ layerRenderer.composeFrame(frameState, layerState, context);
+ }
+ }
+
+ ol.render.canvas.rotateAtOffset(context, -rotation, width / 2, height / 2);
+
+ this.dispatchComposeEvent_(
+ ol.render.EventType.POSTCOMPOSE, frameState);
+
+ if (!this.renderedVisible_) {
+ this.canvas_.style.display = '';
+ this.renderedVisible_ = true;
+ }
+
+ this.scheduleRemoveUnusedLayerRenderers(frameState);
+ this.scheduleExpireIconCache(frameState);
+};
+
+goog.provide('ol.renderer.dom.Layer');
+
+goog.require('ol');
+goog.require('ol.layer.Layer');
+goog.require('ol.renderer.Layer');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Layer}
+ * @param {ol.layer.Layer} layer Layer.
+ * @param {!Element} target Target.
+ */
+ol.renderer.dom.Layer = function(layer, target) {
+
+ ol.renderer.Layer.call(this, layer);
+
+ /**
+ * @type {!Element}
+ * @protected
+ */
+ this.target = target;
+
+};
+ol.inherits(ol.renderer.dom.Layer, ol.renderer.Layer);
+
+
+/**
+ * Clear rendered elements.
+ */
+ol.renderer.dom.Layer.prototype.clearFrame = ol.nullFunction;
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ */
+ol.renderer.dom.Layer.prototype.composeFrame = ol.nullFunction;
+
+
+/**
+ * @return {!Element} Target.
+ */
+ol.renderer.dom.Layer.prototype.getTarget = function() {
+ return this.target;
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @return {boolean} whether composeFrame should be called.
+ */
+ol.renderer.dom.Layer.prototype.prepareFrame = goog.abstractMethod;
+
+goog.provide('ol.renderer.dom.ImageLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.ImageBase');
+goog.require('ol.ViewHint');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.layer.Image');
+goog.require('ol.proj');
+goog.require('ol.renderer.dom.Layer');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.dom.Layer}
+ * @param {ol.layer.Image} imageLayer Image layer.
+ */
+ol.renderer.dom.ImageLayer = function(imageLayer) {
+ var target = document.createElement('DIV');
+ target.style.position = 'absolute';
+
+ ol.renderer.dom.Layer.call(this, imageLayer, target);
+
+ /**
+ * The last rendered image.
+ * @private
+ * @type {?ol.ImageBase}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumberIdentity();
+
+};
+ol.inherits(ol.renderer.dom.ImageLayer, ol.renderer.dom.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.ImageLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ var layer = this.getLayer();
+ var source = layer.getSource();
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var skippedFeatureUids = frameState.skippedFeatureUids;
+ return source.forEachFeatureAtCoordinate(
+ coordinate, resolution, rotation, skippedFeatureUids,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ return callback.call(thisArg, feature, layer);
+ });
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.ImageLayer.prototype.clearFrame = function() {
+ ol.dom.removeChildren(this.target);
+ this.image_ = null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.ImageLayer.prototype.prepareFrame = function(frameState, layerState) {
+
+ var viewState = frameState.viewState;
+ var viewCenter = viewState.center;
+ var viewResolution = viewState.resolution;
+ var viewRotation = viewState.rotation;
+
+ var image = this.image_;
+ var imageLayer = this.getLayer();
+ goog.asserts.assertInstanceof(imageLayer, ol.layer.Image,
+ 'layer is an instance of ol.layer.Image');
+ var imageSource = imageLayer.getSource();
+
+ var hints = frameState.viewHints;
+
+ var renderedExtent = frameState.extent;
+ if (layerState.extent !== undefined) {
+ renderedExtent = ol.extent.getIntersection(
+ renderedExtent, layerState.extent);
+ }
+
+ if (!hints[ol.ViewHint.ANIMATING] && !hints[ol.ViewHint.INTERACTING] &&
+ !ol.extent.isEmpty(renderedExtent)) {
+ var projection = viewState.projection;
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ var sourceProjection = imageSource.getProjection();
+ if (sourceProjection) {
+ goog.asserts.assert(ol.proj.equivalent(projection, sourceProjection),
+ 'projection and sourceProjection are equivalent');
+ projection = sourceProjection;
+ }
+ }
+ var image_ = imageSource.getImage(renderedExtent, viewResolution,
+ frameState.pixelRatio, projection);
+ if (image_) {
+ var loaded = this.loadImage(image_);
+ if (loaded) {
+ image = image_;
+ }
+ }
+ }
+
+ if (image) {
+ var imageExtent = image.getExtent();
+ var imageResolution = image.getResolution();
+ var transform = goog.vec.Mat4.createNumber();
+ ol.vec.Mat4.makeTransform2D(transform,
+ frameState.size[0] / 2, frameState.size[1] / 2,
+ imageResolution / viewResolution, imageResolution / viewResolution,
+ viewRotation,
+ (imageExtent[0] - viewCenter[0]) / imageResolution,
+ (viewCenter[1] - imageExtent[3]) / imageResolution);
+ if (image != this.image_) {
+ var imageElement = image.getImage(this);
+ // Bootstrap sets the style max-width: 100% for all images, which breaks
+ // prevents the image from being displayed in FireFox. Workaround by
+ // overriding the max-width style.
+ imageElement.style.maxWidth = 'none';
+ imageElement.style.position = 'absolute';
+ ol.dom.removeChildren(this.target);
+ this.target.appendChild(imageElement);
+ this.image_ = image;
+ }
+ this.setTransform_(transform);
+ this.updateAttributions(frameState.attributions, image.getAttributions());
+ this.updateLogos(frameState, imageSource);
+ }
+
+ return true;
+};
+
+
+/**
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @private
+ */
+ol.renderer.dom.ImageLayer.prototype.setTransform_ = function(transform) {
+ if (!ol.vec.Mat4.equals2D(transform, this.transform_)) {
+ ol.dom.transformElement2D(this.target, transform, 6);
+ goog.vec.Mat4.setFromArray(this.transform_, transform);
+ }
+};
+
+// FIXME probably need to reset TileLayerZ if offsets get too large
+// FIXME when zooming out, preserve higher Z divs to avoid white flash
+
+goog.provide('ol.renderer.dom.TileLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+goog.require('ol.TileRange');
+goog.require('ol.TileState');
+goog.require('ol.ViewHint');
+goog.require('ol.array');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.layer.Tile');
+goog.require('ol.renderer.dom.Layer');
+goog.require('ol.size');
+goog.require('ol.tilegrid.TileGrid');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.dom.Layer}
+ * @param {ol.layer.Tile} tileLayer Tile layer.
+ */
+ol.renderer.dom.TileLayer = function(tileLayer) {
+
+ var target = document.createElement('DIV');
+ target.style.position = 'absolute';
+
+ ol.renderer.dom.Layer.call(this, tileLayer, target);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = true;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedOpacity_ = 1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = 0;
+
+ /**
+ * @private
+ * @type {!Object.<number, ol.renderer.dom.TileLayerZ_>}
+ */
+ this.tileLayerZs_ = {};
+
+};
+ol.inherits(ol.renderer.dom.TileLayer, ol.renderer.dom.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.TileLayer.prototype.clearFrame = function() {
+ ol.dom.removeChildren(this.target);
+ this.renderedRevision_ = 0;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.TileLayer.prototype.prepareFrame = function(frameState, layerState) {
+
+ if (!layerState.visible) {
+ if (this.renderedVisible_) {
+ this.target.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return true;
+ }
+
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+
+ var tileLayer = this.getLayer();
+ goog.asserts.assertInstanceof(tileLayer, ol.layer.Tile,
+ 'layer is an instance of ol.layer.Tile');
+ var tileSource = tileLayer.getSource();
+ var tileGrid = tileSource.getTileGridForProjection(projection);
+ var tileGutter = tileSource.getGutter(projection);
+ var z = tileGrid.getZForResolution(viewState.resolution);
+ var tileResolution = tileGrid.getResolution(z);
+ var center = viewState.center;
+ var extent;
+ if (tileResolution == viewState.resolution) {
+ center = this.snapCenterToPixel(center, tileResolution, frameState.size);
+ extent = ol.extent.getForViewAndSize(
+ center, tileResolution, viewState.rotation, frameState.size);
+ } else {
+ extent = frameState.extent;
+ }
+
+ if (layerState.extent !== undefined) {
+ extent = ol.extent.getIntersection(extent, layerState.extent);
+ }
+
+ var tileRange = tileGrid.getTileRangeForExtentAndResolution(
+ extent, tileResolution);
+
+ /** @type {Object.<number, Object.<string, ol.Tile>>} */
+ var tilesToDrawByZ = {};
+ tilesToDrawByZ[z] = {};
+
+ var findLoadedTiles = this.createLoadedTileFinder(
+ tileSource, projection, tilesToDrawByZ);
+
+ var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
+
+ var tmpExtent = ol.extent.createEmpty();
+ var tmpTileRange = new ol.TileRange(0, 0, 0, 0);
+ var childTileRange, drawable, fullyLoaded, tile, tileState, x, y;
+ for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
+ for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
+ tile = tileSource.getTile(z, x, y, pixelRatio, projection);
+ tileState = tile.getState();
+ drawable = tileState == ol.TileState.LOADED ||
+ tileState == ol.TileState.EMPTY ||
+ tileState == ol.TileState.ERROR && !useInterimTilesOnError;
+ if (!drawable && tile.interimTile) {
+ tile = tile.interimTile;
+ }
+ goog.asserts.assert(tile);
+ tileState = tile.getState();
+ if (tileState == ol.TileState.LOADED) {
+ tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
+ continue;
+ } else if (tileState == ol.TileState.EMPTY ||
+ (tileState == ol.TileState.ERROR &&
+ !useInterimTilesOnError)) {
+ continue;
+ }
+ fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
+ tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
+ if (!fullyLoaded) {
+ childTileRange = tileGrid.getTileCoordChildTileRange(
+ tile.tileCoord, tmpTileRange, tmpExtent);
+ if (childTileRange) {
+ findLoadedTiles(z + 1, childTileRange);
+ }
+ }
+
+ }
+
+ }
+
+ // If the tile source revision changes, we destroy the existing DOM structure
+ // so that a new one will be created. It would be more efficient to modify
+ // the existing structure.
+ var tileLayerZ, tileLayerZKey;
+ if (this.renderedRevision_ != tileSource.getRevision()) {
+ for (tileLayerZKey in this.tileLayerZs_) {
+ tileLayerZ = this.tileLayerZs_[+tileLayerZKey];
+ ol.dom.removeNode(tileLayerZ.target);
+ }
+ this.tileLayerZs_ = {};
+ this.renderedRevision_ = tileSource.getRevision();
+ }
+
+ /** @type {Array.<number>} */
+ var zs = Object.keys(tilesToDrawByZ).map(Number);
+ zs.sort(ol.array.numberSafeCompareFunction);
+
+ /** @type {Object.<number, boolean>} */
+ var newTileLayerZKeys = {};
+
+ var iz, iziz, tileCoordKey, tileCoordOrigin, tilesToDraw;
+ for (iz = 0, iziz = zs.length; iz < iziz; ++iz) {
+ tileLayerZKey = zs[iz];
+ if (tileLayerZKey in this.tileLayerZs_) {
+ tileLayerZ = this.tileLayerZs_[tileLayerZKey];
+ } else {
+ tileCoordOrigin =
+ tileGrid.getTileCoordForCoordAndZ(center, tileLayerZKey);
+ tileLayerZ = new ol.renderer.dom.TileLayerZ_(tileGrid, tileCoordOrigin);
+ newTileLayerZKeys[tileLayerZKey] = true;
+ this.tileLayerZs_[tileLayerZKey] = tileLayerZ;
+ }
+ tilesToDraw = tilesToDrawByZ[tileLayerZKey];
+ for (tileCoordKey in tilesToDraw) {
+ tileLayerZ.addTile(tilesToDraw[tileCoordKey], tileGutter);
+ }
+ tileLayerZ.finalizeAddTiles();
+ }
+
+ /** @type {Array.<number>} */
+ var tileLayerZKeys = Object.keys(this.tileLayerZs_).map(Number);
+ tileLayerZKeys.sort(ol.array.numberSafeCompareFunction);
+
+ var i, ii, j, origin, resolution;
+ var transform = goog.vec.Mat4.createNumber();
+ for (i = 0, ii = tileLayerZKeys.length; i < ii; ++i) {
+ tileLayerZKey = tileLayerZKeys[i];
+ tileLayerZ = this.tileLayerZs_[tileLayerZKey];
+ if (!(tileLayerZKey in tilesToDrawByZ)) {
+ ol.dom.removeNode(tileLayerZ.target);
+ delete this.tileLayerZs_[tileLayerZKey];
+ continue;
+ }
+ resolution = tileLayerZ.getResolution();
+ origin = tileLayerZ.getOrigin();
+ ol.vec.Mat4.makeTransform2D(transform,
+ frameState.size[0] / 2, frameState.size[1] / 2,
+ resolution / viewState.resolution,
+ resolution / viewState.resolution,
+ viewState.rotation,
+ (origin[0] - center[0]) / resolution,
+ (center[1] - origin[1]) / resolution);
+ tileLayerZ.setTransform(transform);
+ if (tileLayerZKey in newTileLayerZKeys) {
+ for (j = tileLayerZKey - 1; j >= 0; --j) {
+ if (j in this.tileLayerZs_) {
+ if (this.tileLayerZs_[j].target.parentNode) {
+ this.tileLayerZs_[j].target.parentNode.insertBefore(tileLayerZ.target, this.tileLayerZs_[j].target.nextSibling);
+ }
+ break;
+ }
+ }
+ if (j < 0) {
+ this.target.insertBefore(tileLayerZ.target, this.target.childNodes[0] || null);
+ }
+ } else {
+ if (!frameState.viewHints[ol.ViewHint.ANIMATING] &&
+ !frameState.viewHints[ol.ViewHint.INTERACTING]) {
+ tileLayerZ.removeTilesOutsideExtent(extent, tmpTileRange);
+ }
+ }
+ }
+
+ if (layerState.opacity != this.renderedOpacity_) {
+ this.target.style.opacity = layerState.opacity;
+ this.renderedOpacity_ = layerState.opacity;
+ }
+
+ if (layerState.visible && !this.renderedVisible_) {
+ this.target.style.display = '';
+ this.renderedVisible_ = true;
+ }
+
+ this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
+ this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio,
+ projection, extent, z, tileLayer.getPreload());
+ this.scheduleExpireCache(frameState, tileSource);
+ this.updateLogos(frameState, tileSource);
+
+ return true;
+};
+
+
+/**
+ * @constructor
+ * @private
+ * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
+ * @param {ol.TileCoord} tileCoordOrigin Tile coord origin.
+ */
+ol.renderer.dom.TileLayerZ_ = function(tileGrid, tileCoordOrigin) {
+
+ /**
+ * @type {!Element}
+ */
+ this.target = document.createElement('DIV');
+ this.target.style.position = 'absolute';
+ this.target.style.width = '100%';
+ this.target.style.height = '100%';
+
+ /**
+ * @private
+ * @type {ol.tilegrid.TileGrid}
+ */
+ this.tileGrid_ = tileGrid;
+
+ /**
+ * @private
+ * @type {ol.TileCoord}
+ */
+ this.tileCoordOrigin_ = tileCoordOrigin;
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.origin_ =
+ ol.extent.getTopLeft(tileGrid.getTileCoordExtent(tileCoordOrigin));
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.resolution_ = tileGrid.getResolution(tileCoordOrigin[0]);
+
+ /**
+ * @private
+ * @type {Object.<string, ol.Tile>}
+ */
+ this.tiles_ = {};
+
+ /**
+ * @private
+ * @type {DocumentFragment}
+ */
+ this.documentFragment_ = null;
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumberIdentity();
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.tmpSize_ = [0, 0];
+
+};
+
+
+/**
+ * @param {ol.Tile} tile Tile.
+ * @param {number} tileGutter Tile gutter.
+ */
+ol.renderer.dom.TileLayerZ_.prototype.addTile = function(tile, tileGutter) {
+ var tileCoord = tile.tileCoord;
+ var tileCoordZ = tileCoord[0];
+ var tileCoordX = tileCoord[1];
+ var tileCoordY = tileCoord[2];
+ goog.asserts.assert(tileCoordZ == this.tileCoordOrigin_[0],
+ 'tileCoordZ matches z of tileCoordOrigin');
+ var tileCoordKey = tileCoord.toString();
+ if (tileCoordKey in this.tiles_) {
+ return;
+ }
+ var tileSize = ol.size.toSize(
+ this.tileGrid_.getTileSize(tileCoordZ), this.tmpSize_);
+ var image = tile.getImage(this);
+ var imageStyle = image.style;
+ // Bootstrap sets the style max-width: 100% for all images, which
+ // prevents the tile from being displayed in FireFox. Workaround
+ // by overriding the max-width style.
+ imageStyle.maxWidth = 'none';
+ var tileElement;
+ var tileElementStyle;
+ if (tileGutter > 0) {
+ tileElement = document.createElement('DIV');
+ tileElementStyle = tileElement.style;
+ tileElementStyle.overflow = 'hidden';
+ tileElementStyle.width = tileSize[0] + 'px';
+ tileElementStyle.height = tileSize[1] + 'px';
+ imageStyle.position = 'absolute';
+ imageStyle.left = -tileGutter + 'px';
+ imageStyle.top = -tileGutter + 'px';
+ imageStyle.width = (tileSize[0] + 2 * tileGutter) + 'px';
+ imageStyle.height = (tileSize[1] + 2 * tileGutter) + 'px';
+ tileElement.appendChild(image);
+ } else {
+ imageStyle.width = tileSize[0] + 'px';
+ imageStyle.height = tileSize[1] + 'px';
+ tileElement = image;
+ tileElementStyle = imageStyle;
+ }
+ tileElementStyle.position = 'absolute';
+ tileElementStyle.left =
+ ((tileCoordX - this.tileCoordOrigin_[1]) * tileSize[0]) + 'px';
+ tileElementStyle.top =
+ ((this.tileCoordOrigin_[2] - tileCoordY) * tileSize[1]) + 'px';
+ if (!this.documentFragment_) {
+ this.documentFragment_ = document.createDocumentFragment();
+ }
+ this.documentFragment_.appendChild(tileElement);
+ this.tiles_[tileCoordKey] = tile;
+};
+
+
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.renderer.dom.TileLayerZ_.prototype.finalizeAddTiles = function() {
+ if (this.documentFragment_) {
+ this.target.appendChild(this.documentFragment_);
+ this.documentFragment_ = null;
+ }
+};
+
+
+/**
+ * @return {ol.Coordinate} Origin.
+ */
+ol.renderer.dom.TileLayerZ_.prototype.getOrigin = function() {
+ return this.origin_;
+};
+
+
+/**
+ * @return {number} Resolution.
+ */
+ol.renderer.dom.TileLayerZ_.prototype.getResolution = function() {
+ return this.resolution_;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object.
+ */
+ol.renderer.dom.TileLayerZ_.prototype.removeTilesOutsideExtent = function(extent, opt_tileRange) {
+ var tileRange = this.tileGrid_.getTileRangeForExtentAndZ(
+ extent, this.tileCoordOrigin_[0], opt_tileRange);
+ /** @type {Array.<ol.Tile>} */
+ var tilesToRemove = [];
+ var tile, tileCoordKey;
+ for (tileCoordKey in this.tiles_) {
+ tile = this.tiles_[tileCoordKey];
+ if (!tileRange.contains(tile.tileCoord)) {
+ tilesToRemove.push(tile);
+ }
+ }
+ var i, ii;
+ for (i = 0, ii = tilesToRemove.length; i < ii; ++i) {
+ tile = tilesToRemove[i];
+ tileCoordKey = tile.tileCoord.toString();
+ ol.dom.removeNode(tile.getImage(this));
+ delete this.tiles_[tileCoordKey];
+ }
+};
+
+
+/**
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ */
+ol.renderer.dom.TileLayerZ_.prototype.setTransform = function(transform) {
+ if (!ol.vec.Mat4.equals2D(transform, this.transform_)) {
+ ol.dom.transformElement2D(this.target, transform, 6);
+ goog.vec.Mat4.setFromArray(this.transform_, transform);
+ }
+};
+
+goog.provide('ol.renderer.dom.VectorLayer');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('goog.vec.Mat4');
+goog.require('ol.ViewHint');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.render.canvas.ReplayGroup');
+goog.require('ol.renderer.dom.Layer');
+goog.require('ol.renderer.vector');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.dom.Layer}
+ * @param {ol.layer.Vector} vectorLayer Vector layer.
+ */
+ol.renderer.dom.VectorLayer = function(vectorLayer) {
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D();
+
+ var target = this.context_.canvas;
+ // Bootstrap sets the style max-width: 100% for all images, which breaks
+ // prevents the image from being displayed in FireFox. Workaround by
+ // overriding the max-width style.
+ target.style.maxWidth = 'none';
+ target.style.position = 'absolute';
+
+ ol.renderer.dom.Layer.call(this, vectorLayer, target);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.dirty_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedResolution_ = NaN;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.renderedExtent_ = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {function(ol.Feature, ol.Feature): number|null}
+ */
+ this.renderedRenderOrder_ = null;
+
+ /**
+ * @private
+ * @type {ol.render.canvas.ReplayGroup}
+ */
+ this.replayGroup_ = null;
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.elementTransform_ = goog.vec.Mat4.createNumber();
+
+};
+ol.inherits(ol.renderer.dom.VectorLayer, ol.renderer.dom.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.VectorLayer.prototype.clearFrame = function() {
+ // Clear the canvas
+ var canvas = this.context_.canvas;
+ canvas.width = canvas.width;
+ this.renderedRevision_ = 0;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.VectorLayer.prototype.composeFrame = function(frameState, layerState) {
+
+ var vectorLayer = /** @type {ol.layer.Vector} */ (this.getLayer());
+ goog.asserts.assertInstanceof(vectorLayer, ol.layer.Vector,
+ 'layer is an instance of ol.layer.Vector');
+
+ var viewState = frameState.viewState;
+ var viewCenter = viewState.center;
+ var viewRotation = viewState.rotation;
+ var viewResolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var viewWidth = frameState.size[0];
+ var viewHeight = frameState.size[1];
+ var imageWidth = viewWidth * pixelRatio;
+ var imageHeight = viewHeight * pixelRatio;
+
+ var transform = ol.vec.Mat4.makeTransform2D(this.transform_,
+ pixelRatio * viewWidth / 2,
+ pixelRatio * viewHeight / 2,
+ pixelRatio / viewResolution,
+ -pixelRatio / viewResolution,
+ -viewRotation,
+ -viewCenter[0], -viewCenter[1]);
+
+ var context = this.context_;
+
+ // Clear the canvas and set the correct size
+ context.canvas.width = imageWidth;
+ context.canvas.height = imageHeight;
+
+ var elementTransform = ol.vec.Mat4.makeTransform2D(this.elementTransform_,
+ 0, 0,
+ 1 / pixelRatio, 1 / pixelRatio,
+ 0,
+ -(imageWidth - viewWidth) / 2 * pixelRatio,
+ -(imageHeight - viewHeight) / 2 * pixelRatio);
+ ol.dom.transformElement2D(context.canvas, elementTransform, 6);
+
+ this.dispatchEvent_(ol.render.EventType.PRECOMPOSE, frameState, transform);
+
+ var replayGroup = this.replayGroup_;
+
+ if (replayGroup && !replayGroup.isEmpty()) {
+
+ context.globalAlpha = layerState.opacity;
+ replayGroup.replay(context, pixelRatio, transform, viewRotation,
+ layerState.managed ? frameState.skippedFeatureUids : {});
+
+ this.dispatchEvent_(ol.render.EventType.RENDER, frameState, transform);
+ }
+
+ this.dispatchEvent_(ol.render.EventType.POSTCOMPOSE, frameState, transform);
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {goog.vec.Mat4.Number} transform Transform.
+ * @private
+ */
+ol.renderer.dom.VectorLayer.prototype.dispatchEvent_ = function(type, frameState, transform) {
+ var context = this.context_;
+ var layer = this.getLayer();
+ if (layer.hasListener(type)) {
+ var render = new ol.render.canvas.Immediate(
+ context, frameState.pixelRatio, frameState.extent, transform,
+ frameState.viewState.rotation);
+ var event = new ol.render.Event(type, layer, render, frameState,
+ context, null);
+ layer.dispatchEvent(event);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.VectorLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ if (!this.replayGroup_) {
+ return undefined;
+ } else {
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var layer = this.getLayer();
+ /** @type {Object.<string, boolean>} */
+ var features = {};
+ return this.replayGroup_.forEachFeatureAtCoordinate(coordinate, resolution,
+ rotation, {},
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ goog.asserts.assert(feature !== undefined, 'received a feature');
+ var key = goog.getUid(feature).toString();
+ if (!(key in features)) {
+ features[key] = true;
+ return callback.call(thisArg, feature, layer);
+ }
+ });
+ }
+};
+
+
+/**
+ * Handle changes in image style state.
+ * @param {ol.events.Event} event Image style change event.
+ * @private
+ */
+ol.renderer.dom.VectorLayer.prototype.handleStyleImageChange_ = function(event) {
+ this.renderIfReadyAndVisible();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.VectorLayer.prototype.prepareFrame = function(frameState, layerState) {
+
+ var vectorLayer = /** @type {ol.layer.Vector} */ (this.getLayer());
+ goog.asserts.assertInstanceof(vectorLayer, ol.layer.Vector,
+ 'layer is an instance of ol.layer.Vector');
+ var vectorSource = vectorLayer.getSource();
+
+ this.updateAttributions(
+ frameState.attributions, vectorSource.getAttributions());
+ this.updateLogos(frameState, vectorSource);
+
+ var animating = frameState.viewHints[ol.ViewHint.ANIMATING];
+ var interacting = frameState.viewHints[ol.ViewHint.INTERACTING];
+ var updateWhileAnimating = vectorLayer.getUpdateWhileAnimating();
+ var updateWhileInteracting = vectorLayer.getUpdateWhileInteracting();
+
+ if (!this.dirty_ && (!updateWhileAnimating && animating) ||
+ (!updateWhileInteracting && interacting)) {
+ return true;
+ }
+
+ var frameStateExtent = frameState.extent;
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+ var resolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var vectorLayerRevision = vectorLayer.getRevision();
+ var vectorLayerRenderBuffer = vectorLayer.getRenderBuffer();
+ var vectorLayerRenderOrder = vectorLayer.getRenderOrder();
+
+ if (vectorLayerRenderOrder === undefined) {
+ vectorLayerRenderOrder = ol.renderer.vector.defaultOrder;
+ }
+
+ var extent = ol.extent.buffer(frameStateExtent,
+ vectorLayerRenderBuffer * resolution);
+
+ if (!this.dirty_ &&
+ this.renderedResolution_ == resolution &&
+ this.renderedRevision_ == vectorLayerRevision &&
+ this.renderedRenderOrder_ == vectorLayerRenderOrder &&
+ ol.extent.containsExtent(this.renderedExtent_, extent)) {
+ return true;
+ }
+
+ this.replayGroup_ = null;
+
+ this.dirty_ = false;
+
+ var replayGroup =
+ new ol.render.canvas.ReplayGroup(
+ ol.renderer.vector.getTolerance(resolution, pixelRatio), extent,
+ resolution, vectorLayer.getRenderBuffer());
+ vectorSource.loadFeatures(extent, resolution, projection);
+ /**
+ * @param {ol.Feature} feature Feature.
+ * @this {ol.renderer.dom.VectorLayer}
+ */
+ var renderFeature = function(feature) {
+ var styles;
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction.call(feature, resolution);
+ } else {
+ styleFunction = vectorLayer.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction(feature, resolution);
+ }
+ }
+ if (styles) {
+ var dirty = this.renderFeature(
+ feature, resolution, pixelRatio, styles, replayGroup);
+ this.dirty_ = this.dirty_ || dirty;
+ }
+ };
+ if (vectorLayerRenderOrder) {
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ vectorSource.forEachFeatureInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ */
+ function(feature) {
+ features.push(feature);
+ }, this);
+ features.sort(vectorLayerRenderOrder);
+ features.forEach(renderFeature, this);
+ } else {
+ vectorSource.forEachFeatureInExtent(extent, renderFeature, this);
+ }
+ replayGroup.finish();
+
+ this.renderedResolution_ = resolution;
+ this.renderedRevision_ = vectorLayerRevision;
+ this.renderedRenderOrder_ = vectorLayerRenderOrder;
+ this.renderedExtent_ = extent;
+ this.replayGroup_ = replayGroup;
+
+ return true;
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {(ol.style.Style|Array.<ol.style.Style>)} styles The style or array of
+ * styles.
+ * @param {ol.render.canvas.ReplayGroup} replayGroup Replay group.
+ * @return {boolean} `true` if an image is loading.
+ */
+ol.renderer.dom.VectorLayer.prototype.renderFeature = function(feature, resolution, pixelRatio, styles, replayGroup) {
+ if (!styles) {
+ return false;
+ }
+ var loading = false;
+ if (Array.isArray(styles)) {
+ for (var i = 0, ii = styles.length; i < ii; ++i) {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles[i],
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ } else {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles,
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ return loading;
+};
+
+goog.provide('ol.renderer.dom.Map');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('goog.vec.Mat4');
+goog.require('ol');
+goog.require('ol.RendererType');
+goog.require('ol.array');
+goog.require('ol.css');
+goog.require('ol.dom');
+goog.require('ol.layer.Image');
+goog.require('ol.layer.Layer');
+goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.renderer.Map');
+goog.require('ol.renderer.dom.ImageLayer');
+goog.require('ol.renderer.dom.Layer');
+goog.require('ol.renderer.dom.TileLayer');
+goog.require('ol.renderer.dom.VectorLayer');
+goog.require('ol.source.State');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Map}
+ * @param {Element} container Container.
+ * @param {ol.Map} map Map.
+ */
+ol.renderer.dom.Map = function(container, map) {
+
+ ol.renderer.Map.call(this, container, map);
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D();
+ var canvas = this.context_.canvas;
+ canvas.style.position = 'absolute';
+ canvas.style.width = '100%';
+ canvas.style.height = '100%';
+ canvas.className = ol.css.CLASS_UNSELECTABLE;
+ container.insertBefore(canvas, container.childNodes[0] || null);
+
+ /**
+ * @private
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.transform_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @type {!Element}
+ * @private
+ */
+ this.layersPane_ = document.createElement('DIV');
+ this.layersPane_.className = ol.css.CLASS_UNSELECTABLE;
+ var style = this.layersPane_.style;
+ style.position = 'absolute';
+ style.width = '100%';
+ style.height = '100%';
+
+ // prevent the img context menu on mobile devices
+ ol.events.listen(this.layersPane_, ol.events.EventType.TOUCHSTART,
+ ol.events.Event.preventDefault);
+
+ container.insertBefore(this.layersPane_, container.childNodes[0] || null);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = true;
+
+};
+ol.inherits(ol.renderer.dom.Map, ol.renderer.Map);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.Map.prototype.disposeInternal = function() {
+ ol.dom.removeNode(this.layersPane_);
+ ol.renderer.Map.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.Map.prototype.createLayerRenderer = function(layer) {
+ var layerRenderer;
+ if (ol.ENABLE_IMAGE && layer instanceof ol.layer.Image) {
+ layerRenderer = new ol.renderer.dom.ImageLayer(layer);
+ } else if (ol.ENABLE_TILE && layer instanceof ol.layer.Tile) {
+ layerRenderer = new ol.renderer.dom.TileLayer(layer);
+ } else if (ol.ENABLE_VECTOR && layer instanceof ol.layer.Vector) {
+ layerRenderer = new ol.renderer.dom.VectorLayer(layer);
+ } else {
+ goog.asserts.fail('unexpected layer configuration');
+ return null;
+ }
+ return layerRenderer;
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.dom.Map.prototype.dispatchComposeEvent_ = function(type, frameState) {
+ var map = this.getMap();
+ if (map.hasListener(type)) {
+ var extent = frameState.extent;
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var rotation = viewState.rotation;
+ var context = this.context_;
+ var canvas = context.canvas;
+
+ ol.vec.Mat4.makeTransform2D(this.transform_,
+ canvas.width / 2,
+ canvas.height / 2,
+ pixelRatio / viewState.resolution,
+ -pixelRatio / viewState.resolution,
+ -viewState.rotation,
+ -viewState.center[0], -viewState.center[1]);
+ var vectorContext = new ol.render.canvas.Immediate(context, pixelRatio,
+ extent, this.transform_, rotation);
+ var composeEvent = new ol.render.Event(type, map, vectorContext,
+ frameState, context, null);
+ map.dispatchEvent(composeEvent);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.Map.prototype.getType = function() {
+ return ol.RendererType.DOM;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.dom.Map.prototype.renderFrame = function(frameState) {
+
+ if (!frameState) {
+ if (this.renderedVisible_) {
+ this.layersPane_.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return;
+ }
+
+ var map = this.getMap();
+ if (map.hasListener(ol.render.EventType.PRECOMPOSE) ||
+ map.hasListener(ol.render.EventType.POSTCOMPOSE)) {
+ var canvas = this.context_.canvas;
+ var pixelRatio = frameState.pixelRatio;
+ canvas.width = frameState.size[0] * pixelRatio;
+ canvas.height = frameState.size[1] * pixelRatio;
+ }
+
+ this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
+
+ var layerStatesArray = frameState.layerStatesArray;
+ ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+
+ var viewResolution = frameState.viewState.resolution;
+ var i, ii, layer, layerRenderer, layerState;
+ for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
+ layerState = layerStatesArray[i];
+ layer = layerState.layer;
+ layerRenderer = /** @type {ol.renderer.dom.Layer} */ (
+ this.getLayerRenderer(layer));
+ goog.asserts.assertInstanceof(layerRenderer, ol.renderer.dom.Layer,
+ 'renderer is an instance of ol.renderer.dom.Layer');
+ this.layersPane_.insertBefore(layerRenderer.getTarget(), this.layersPane_.childNodes[i] || null);
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
+ layerState.sourceState == ol.source.State.READY) {
+ if (layerRenderer.prepareFrame(frameState, layerState)) {
+ layerRenderer.composeFrame(frameState, layerState);
+ }
+ } else {
+ layerRenderer.clearFrame();
+ }
+ }
+
+ var layerStates = frameState.layerStates;
+ var layerKey;
+ for (layerKey in this.getLayerRenderers()) {
+ if (!(layerKey in layerStates)) {
+ layerRenderer = this.getLayerRendererByKey(layerKey);
+ goog.asserts.assertInstanceof(layerRenderer, ol.renderer.dom.Layer,
+ 'renderer is an instance of ol.renderer.dom.Layer');
+ ol.dom.removeNode(layerRenderer.getTarget());
+ }
+ }
+
+ if (!this.renderedVisible_) {
+ this.layersPane_.style.display = '';
+ this.renderedVisible_ = true;
+ }
+
+ this.calculateMatrices2D(frameState);
+ this.scheduleRemoveUnusedLayerRenderers(frameState);
+ this.scheduleExpireIconCache(frameState);
+
+ this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, frameState);
+};
+
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+/**
+ * @fileoverview Constants used by the WebGL rendering, including all of the
+ * constants used from the WebGL context. For example, instead of using
+ * context.ARRAY_BUFFER, your code can use
+ * goog.webgl.ARRAY_BUFFER. The benefits for doing this include allowing
+ * the compiler to optimize your code so that the compiled code does not have to
+ * contain large strings to reference these properties, and reducing runtime
+ * property access.
+ *
+ * Values are taken from the WebGL Spec:
+ * https://www.khronos.org/registry/webgl/specs/1.0/#WEBGLRENDERINGCONTEXT
+ */
+
+goog.provide('goog.webgl');
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_BUFFER_BIT = 0x00000100;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BUFFER_BIT = 0x00000400;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COLOR_BUFFER_BIT = 0x00004000;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.POINTS = 0x0000;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINES = 0x0001;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINE_LOOP = 0x0002;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINE_STRIP = 0x0003;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TRIANGLES = 0x0004;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TRIANGLE_STRIP = 0x0005;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TRIANGLE_FAN = 0x0006;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ZERO = 0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE = 1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SRC_COLOR = 0x0300;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_SRC_COLOR = 0x0301;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SRC_ALPHA = 0x0302;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_SRC_ALPHA = 0x0303;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DST_ALPHA = 0x0304;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_DST_ALPHA = 0x0305;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DST_COLOR = 0x0306;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_DST_COLOR = 0x0307;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SRC_ALPHA_SATURATE = 0x0308;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FUNC_ADD = 0x8006;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_EQUATION = 0x8009;
+
+
+/**
+ * Same as BLEND_EQUATION
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_EQUATION_RGB = 0x8009;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_EQUATION_ALPHA = 0x883D;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FUNC_SUBTRACT = 0x800A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FUNC_REVERSE_SUBTRACT = 0x800B;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_DST_RGB = 0x80C8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_SRC_RGB = 0x80C9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_DST_ALPHA = 0x80CA;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_SRC_ALPHA = 0x80CB;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CONSTANT_COLOR = 0x8001;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_CONSTANT_COLOR = 0x8002;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CONSTANT_ALPHA = 0x8003;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ONE_MINUS_CONSTANT_ALPHA = 0x8004;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND_COLOR = 0x8005;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ARRAY_BUFFER = 0x8892;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ELEMENT_ARRAY_BUFFER = 0x8893;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ARRAY_BUFFER_BINDING = 0x8894;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ELEMENT_ARRAY_BUFFER_BINDING = 0x8895;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STREAM_DRAW = 0x88E0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STATIC_DRAW = 0x88E4;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DYNAMIC_DRAW = 0x88E8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BUFFER_SIZE = 0x8764;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BUFFER_USAGE = 0x8765;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CURRENT_VERTEX_ATTRIB = 0x8626;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRONT = 0x0404;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BACK = 0x0405;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRONT_AND_BACK = 0x0408;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CULL_FACE = 0x0B44;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLEND = 0x0BE2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DITHER = 0x0BD0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_TEST = 0x0B90;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_TEST = 0x0B71;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SCISSOR_TEST = 0x0C11;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.POLYGON_OFFSET_FILL = 0x8037;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLE_ALPHA_TO_COVERAGE = 0x809E;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLE_COVERAGE = 0x80A0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NO_ERROR = 0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INVALID_ENUM = 0x0500;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INVALID_VALUE = 0x0501;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INVALID_OPERATION = 0x0502;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.OUT_OF_MEMORY = 0x0505;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CW = 0x0900;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CCW = 0x0901;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINE_WIDTH = 0x0B21;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ALIASED_POINT_SIZE_RANGE = 0x846D;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ALIASED_LINE_WIDTH_RANGE = 0x846E;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CULL_FACE_MODE = 0x0B45;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRONT_FACE = 0x0B46;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_RANGE = 0x0B70;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_WRITEMASK = 0x0B72;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_CLEAR_VALUE = 0x0B73;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_FUNC = 0x0B74;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_CLEAR_VALUE = 0x0B91;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_FUNC = 0x0B92;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_FAIL = 0x0B94;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_PASS_DEPTH_FAIL = 0x0B95;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_PASS_DEPTH_PASS = 0x0B96;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_REF = 0x0B97;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_VALUE_MASK = 0x0B93;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_WRITEMASK = 0x0B98;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_FUNC = 0x8800;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_FAIL = 0x8801;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_PASS_DEPTH_FAIL = 0x8802;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_PASS_DEPTH_PASS = 0x8803;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_REF = 0x8CA3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_VALUE_MASK = 0x8CA4;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BACK_WRITEMASK = 0x8CA5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VIEWPORT = 0x0BA2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SCISSOR_BOX = 0x0C10;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COLOR_CLEAR_VALUE = 0x0C22;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COLOR_WRITEMASK = 0x0C23;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNPACK_ALIGNMENT = 0x0CF5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.PACK_ALIGNMENT = 0x0D05;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_TEXTURE_SIZE = 0x0D33;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_VIEWPORT_DIMS = 0x0D3A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SUBPIXEL_BITS = 0x0D50;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RED_BITS = 0x0D52;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.GREEN_BITS = 0x0D53;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BLUE_BITS = 0x0D54;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ALPHA_BITS = 0x0D55;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_BITS = 0x0D56;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_BITS = 0x0D57;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.POLYGON_OFFSET_UNITS = 0x2A00;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.POLYGON_OFFSET_FACTOR = 0x8038;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_BINDING_2D = 0x8069;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLE_BUFFERS = 0x80A8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLES = 0x80A9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLE_COVERAGE_VALUE = 0x80AA;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLE_COVERAGE_INVERT = 0x80AB;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPRESSED_TEXTURE_FORMATS = 0x86A3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DONT_CARE = 0x1100;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FASTEST = 0x1101;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NICEST = 0x1102;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.GENERATE_MIPMAP_HINT = 0x8192;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BYTE = 0x1400;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_BYTE = 0x1401;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SHORT = 0x1402;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_SHORT = 0x1403;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INT = 0x1404;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_INT = 0x1405;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT = 0x1406;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_COMPONENT = 0x1902;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ALPHA = 0x1906;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RGB = 0x1907;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RGBA = 0x1908;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LUMINANCE = 0x1909;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LUMINANCE_ALPHA = 0x190A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_SHORT_4_4_4_4 = 0x8033;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_SHORT_5_5_5_1 = 0x8034;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNSIGNED_SHORT_5_6_5 = 0x8363;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAGMENT_SHADER = 0x8B30;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_SHADER = 0x8B31;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_VERTEX_ATTRIBS = 0x8869;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_VARYING_VECTORS = 0x8DFC;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_TEXTURE_IMAGE_UNITS = 0x8872;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SHADER_TYPE = 0x8B4F;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DELETE_STATUS = 0x8B80;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINK_STATUS = 0x8B82;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VALIDATE_STATUS = 0x8B83;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ATTACHED_SHADERS = 0x8B85;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ACTIVE_UNIFORMS = 0x8B86;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ACTIVE_ATTRIBUTES = 0x8B89;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SHADING_LANGUAGE_VERSION = 0x8B8C;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CURRENT_PROGRAM = 0x8B8D;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NEVER = 0x0200;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LESS = 0x0201;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.EQUAL = 0x0202;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LEQUAL = 0x0203;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.GREATER = 0x0204;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NOTEQUAL = 0x0205;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.GEQUAL = 0x0206;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ALWAYS = 0x0207;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.KEEP = 0x1E00;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.REPLACE = 0x1E01;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INCR = 0x1E02;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DECR = 0x1E03;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INVERT = 0x150A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INCR_WRAP = 0x8507;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DECR_WRAP = 0x8508;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VENDOR = 0x1F00;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERER = 0x1F01;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERSION = 0x1F02;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NEAREST = 0x2600;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINEAR = 0x2601;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NEAREST_MIPMAP_NEAREST = 0x2700;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINEAR_MIPMAP_NEAREST = 0x2701;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NEAREST_MIPMAP_LINEAR = 0x2702;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LINEAR_MIPMAP_LINEAR = 0x2703;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_MAG_FILTER = 0x2800;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_MIN_FILTER = 0x2801;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_WRAP_S = 0x2802;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_WRAP_T = 0x2803;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_2D = 0x0DE1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE = 0x1702;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP = 0x8513;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_BINDING_CUBE_MAP = 0x8514;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_POSITIVE_X = 0x8515;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_NEGATIVE_X = 0x8516;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_POSITIVE_Y = 0x8517;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_NEGATIVE_Y = 0x8518;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_POSITIVE_Z = 0x8519;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_CUBE_MAP_NEGATIVE_Z = 0x851A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_CUBE_MAP_TEXTURE_SIZE = 0x851C;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE0 = 0x84C0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE1 = 0x84C1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE2 = 0x84C2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE3 = 0x84C3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE4 = 0x84C4;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE5 = 0x84C5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE6 = 0x84C6;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE7 = 0x84C7;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE8 = 0x84C8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE9 = 0x84C9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE10 = 0x84CA;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE11 = 0x84CB;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE12 = 0x84CC;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE13 = 0x84CD;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE14 = 0x84CE;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE15 = 0x84CF;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE16 = 0x84D0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE17 = 0x84D1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE18 = 0x84D2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE19 = 0x84D3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE20 = 0x84D4;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE21 = 0x84D5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE22 = 0x84D6;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE23 = 0x84D7;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE24 = 0x84D8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE25 = 0x84D9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE26 = 0x84DA;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE27 = 0x84DB;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE28 = 0x84DC;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE29 = 0x84DD;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE30 = 0x84DE;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE31 = 0x84DF;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.ACTIVE_TEXTURE = 0x84E0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.REPEAT = 0x2901;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CLAMP_TO_EDGE = 0x812F;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MIRRORED_REPEAT = 0x8370;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_VEC2 = 0x8B50;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_VEC3 = 0x8B51;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_VEC4 = 0x8B52;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INT_VEC2 = 0x8B53;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INT_VEC3 = 0x8B54;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INT_VEC4 = 0x8B55;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BOOL = 0x8B56;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BOOL_VEC2 = 0x8B57;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BOOL_VEC3 = 0x8B58;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BOOL_VEC4 = 0x8B59;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_MAT2 = 0x8B5A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_MAT3 = 0x8B5B;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FLOAT_MAT4 = 0x8B5C;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLER_2D = 0x8B5E;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.SAMPLER_CUBE = 0x8B60;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_ENABLED = 0x8622;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_SIZE = 0x8623;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_STRIDE = 0x8624;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_TYPE = 0x8625;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_NORMALIZED = 0x886A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_POINTER = 0x8645;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPILE_STATUS = 0x8B81;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LOW_FLOAT = 0x8DF0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MEDIUM_FLOAT = 0x8DF1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.HIGH_FLOAT = 0x8DF2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.LOW_INT = 0x8DF3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MEDIUM_INT = 0x8DF4;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.HIGH_INT = 0x8DF5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER = 0x8D40;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER = 0x8D41;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RGBA4 = 0x8056;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RGB5_A1 = 0x8057;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RGB565 = 0x8D62;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_COMPONENT16 = 0x81A5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_INDEX = 0x1901;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_INDEX8 = 0x8D48;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_STENCIL = 0x84F9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_WIDTH = 0x8D42;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_HEIGHT = 0x8D43;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_INTERNAL_FORMAT = 0x8D44;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_RED_SIZE = 0x8D50;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_GREEN_SIZE = 0x8D51;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_BLUE_SIZE = 0x8D52;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_ALPHA_SIZE = 0x8D53;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_DEPTH_SIZE = 0x8D54;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_STENCIL_SIZE = 0x8D55;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.COLOR_ATTACHMENT0 = 0x8CE0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_ATTACHMENT = 0x8D00;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.STENCIL_ATTACHMENT = 0x8D20;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.DEPTH_STENCIL_ATTACHMENT = 0x821A;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.NONE = 0;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_COMPLETE = 0x8CD5;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 0x8CD9;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_UNSUPPORTED = 0x8CDD;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAMEBUFFER_BINDING = 0x8CA6;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.RENDERBUFFER_BINDING = 0x8CA7;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_RENDERBUFFER_SIZE = 0x84E8;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.INVALID_FRAMEBUFFER_OPERATION = 0x0506;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNPACK_FLIP_Y_WEBGL = 0x9240;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNPACK_PREMULTIPLY_ALPHA_WEBGL = 0x9241;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.CONTEXT_LOST_WEBGL = 0x9242;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243;
+
+
+/**
+ * @const
+ * @type {number}
+ */
+goog.webgl.BROWSER_DEFAULT_WEBGL = 0x9244;
+
+
+/**
+ * From the OES_texture_half_float extension.
+ * http://www.khronos.org/registry/webgl/extensions/OES_texture_half_float/
+ * @const
+ * @type {number}
+ */
+goog.webgl.HALF_FLOAT_OES = 0x8D61;
+
+
+/**
+ * From the OES_standard_derivatives extension.
+ * http://www.khronos.org/registry/webgl/extensions/OES_standard_derivatives/
+ * @const
+ * @type {number}
+ */
+goog.webgl.FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;
+
+
+/**
+ * From the OES_vertex_array_object extension.
+ * http://www.khronos.org/registry/webgl/extensions/OES_vertex_array_object/
+ * @const
+ * @type {number}
+ */
+goog.webgl.VERTEX_ARRAY_BINDING_OES = 0x85B5;
+
+
+/**
+ * From the WEBGL_debug_renderer_info extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_debug_renderer_info/
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNMASKED_VENDOR_WEBGL = 0x9245;
+
+
+/**
+ * From the WEBGL_debug_renderer_info extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_debug_renderer_info/
+ * @const
+ * @type {number}
+ */
+goog.webgl.UNMASKED_RENDERER_WEBGL = 0x9246;
+
+
+/**
+ * From the WEBGL_compressed_texture_s3tc extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0;
+
+
+/**
+ * From the WEBGL_compressed_texture_s3tc extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1;
+
+
+/**
+ * From the WEBGL_compressed_texture_s3tc extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2;
+
+
+/**
+ * From the WEBGL_compressed_texture_s3tc extension.
+ * http://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/
+ * @const
+ * @type {number}
+ */
+goog.webgl.COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3;
+
+
+/**
+ * From the EXT_texture_filter_anisotropic extension.
+ * http://www.khronos.org/registry/webgl/extensions/EXT_texture_filter_anisotropic/
+ * @const
+ * @type {number}
+ */
+goog.webgl.TEXTURE_MAX_ANISOTROPY_EXT = 0x84FE;
+
+
+/**
+ * From the EXT_texture_filter_anisotropic extension.
+ * http://www.khronos.org/registry/webgl/extensions/EXT_texture_filter_anisotropic/
+ * @const
+ * @type {number}
+ */
+goog.webgl.MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF;
+
+goog.provide('ol.webgl.Fragment');
+goog.provide('ol.webgl.Shader');
+goog.provide('ol.webgl.Vertex');
+goog.provide('ol.webgl.shader');
+
+goog.require('goog.webgl');
+goog.require('ol.functions');
+goog.require('ol.webgl');
+
+
+/**
+ * @constructor
+ * @param {string} source Source.
+ * @struct
+ */
+ol.webgl.Shader = function(source) {
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.source_ = source;
+
+};
+
+
+/**
+ * @return {number} Type.
+ */
+ol.webgl.Shader.prototype.getType = goog.abstractMethod;
+
+
+/**
+ * @return {string} Source.
+ */
+ol.webgl.Shader.prototype.getSource = function() {
+ return this.source_;
+};
+
+
+/**
+ * @return {boolean} Is animated?
+ */
+ol.webgl.Shader.prototype.isAnimated = ol.functions.FALSE;
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.Shader}
+ * @param {string} source Source.
+ * @struct
+ */
+ol.webgl.shader.Fragment = function(source) {
+ ol.webgl.Shader.call(this, source);
+};
+ol.inherits(ol.webgl.shader.Fragment, ol.webgl.Shader);
+
+
+/**
+ * @inheritDoc
+ */
+ol.webgl.shader.Fragment.prototype.getType = function() {
+ return goog.webgl.FRAGMENT_SHADER;
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.Shader}
+ * @param {string} source Source.
+ * @struct
+ */
+ol.webgl.shader.Vertex = function(source) {
+ ol.webgl.Shader.call(this, source);
+};
+ol.inherits(ol.webgl.shader.Vertex, ol.webgl.Shader);
+
+
+/**
+ * @inheritDoc
+ */
+ol.webgl.shader.Vertex.prototype.getType = function() {
+ return goog.webgl.VERTEX_SHADER;
+};
+
+// This file is automatically generated, do not edit
+goog.provide('ol.render.webgl.imagereplay.shader.Default');
+goog.provide('ol.render.webgl.imagereplay.shader.Default.Locations');
+goog.provide('ol.render.webgl.imagereplay.shader.DefaultFragment');
+goog.provide('ol.render.webgl.imagereplay.shader.DefaultVertex');
+
+goog.require('ol.webgl.shader');
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Fragment}
+ * @struct
+ */
+ol.render.webgl.imagereplay.shader.DefaultFragment = function() {
+ ol.webgl.shader.Fragment.call(this, ol.render.webgl.imagereplay.shader.DefaultFragment.SOURCE);
+};
+ol.inherits(ol.render.webgl.imagereplay.shader.DefaultFragment, ol.webgl.shader.Fragment);
+goog.addSingletonGetter(ol.render.webgl.imagereplay.shader.DefaultFragment);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultFragment.DEBUG_SOURCE = 'precision mediump float;\nvarying vec2 v_texCoord;\nvarying float v_opacity;\n\nuniform float u_opacity;\nuniform sampler2D u_image;\n\nvoid main(void) {\n vec4 texColor = texture2D(u_image, v_texCoord);\n gl_FragColor.rgb = texColor.rgb;\n float alpha = texColor.a * v_opacity * u_opacity;\n if (alpha == 0.0) {\n discard;\n }\n gl_FragColor.a = alpha;\n}\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultFragment.OPTIMIZED_SOURCE = 'precision mediump float;varying vec2 a;varying float b;uniform float k;uniform sampler2D l;void main(void){vec4 texColor=texture2D(l,a);gl_FragColor.rgb=texColor.rgb;float alpha=texColor.a*b*k;if(alpha==0.0){discard;}gl_FragColor.a=alpha;}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultFragment.SOURCE = goog.DEBUG ?
+ ol.render.webgl.imagereplay.shader.DefaultFragment.DEBUG_SOURCE :
+ ol.render.webgl.imagereplay.shader.DefaultFragment.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Vertex}
+ * @struct
+ */
+ol.render.webgl.imagereplay.shader.DefaultVertex = function() {
+ ol.webgl.shader.Vertex.call(this, ol.render.webgl.imagereplay.shader.DefaultVertex.SOURCE);
+};
+ol.inherits(ol.render.webgl.imagereplay.shader.DefaultVertex, ol.webgl.shader.Vertex);
+goog.addSingletonGetter(ol.render.webgl.imagereplay.shader.DefaultVertex);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultVertex.DEBUG_SOURCE = 'varying vec2 v_texCoord;\nvarying float v_opacity;\n\nattribute vec2 a_position;\nattribute vec2 a_texCoord;\nattribute vec2 a_offsets;\nattribute float a_opacity;\nattribute float a_rotateWithView;\n\nuniform mat4 u_projectionMatrix;\nuniform mat4 u_offsetScaleMatrix;\nuniform mat4 u_offsetRotateMatrix;\n\nvoid main(void) {\n mat4 offsetMatrix = u_offsetScaleMatrix;\n if (a_rotateWithView == 1.0) {\n offsetMatrix = u_offsetScaleMatrix * u_offsetRotateMatrix;\n }\n vec4 offsets = offsetMatrix * vec4(a_offsets, 0., 0.);\n gl_Position = u_projectionMatrix * vec4(a_position, 0., 1.) + offsets;\n v_texCoord = a_texCoord;\n v_opacity = a_opacity;\n}\n\n\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultVertex.OPTIMIZED_SOURCE = 'varying vec2 a;varying float b;attribute vec2 c;attribute vec2 d;attribute vec2 e;attribute float f;attribute float g;uniform mat4 h;uniform mat4 i;uniform mat4 j;void main(void){mat4 offsetMatrix=i;if(g==1.0){offsetMatrix=i*j;}vec4 offsets=offsetMatrix*vec4(e,0.,0.);gl_Position=h*vec4(c,0.,1.)+offsets;a=d;b=f;}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.render.webgl.imagereplay.shader.DefaultVertex.SOURCE = goog.DEBUG ?
+ ol.render.webgl.imagereplay.shader.DefaultVertex.DEBUG_SOURCE :
+ ol.render.webgl.imagereplay.shader.DefaultVertex.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @param {WebGLRenderingContext} gl GL.
+ * @param {WebGLProgram} program Program.
+ * @struct
+ */
+ol.render.webgl.imagereplay.shader.Default.Locations = function(gl, program) {
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_image = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_image' : 'l');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_offsetRotateMatrix = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_offsetRotateMatrix' : 'j');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_offsetScaleMatrix = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_offsetScaleMatrix' : 'i');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_opacity = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_opacity' : 'k');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_projectionMatrix = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_projectionMatrix' : 'h');
+
+ /**
+ * @type {number}
+ */
+ this.a_offsets = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_offsets' : 'e');
+
+ /**
+ * @type {number}
+ */
+ this.a_opacity = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_opacity' : 'f');
+
+ /**
+ * @type {number}
+ */
+ this.a_position = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_position' : 'c');
+
+ /**
+ * @type {number}
+ */
+ this.a_rotateWithView = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_rotateWithView' : 'g');
+
+ /**
+ * @type {number}
+ */
+ this.a_texCoord = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_texCoord' : 'd');
+};
+
+goog.provide('ol.webgl.Buffer');
+
+goog.require('goog.webgl');
+goog.require('ol');
+
+
+/**
+ * @enum {number}
+ */
+ol.webgl.BufferUsage = {
+ STATIC_DRAW: goog.webgl.STATIC_DRAW,
+ STREAM_DRAW: goog.webgl.STREAM_DRAW,
+ DYNAMIC_DRAW: goog.webgl.DYNAMIC_DRAW
+};
+
+
+/**
+ * @constructor
+ * @param {Array.<number>=} opt_arr Array.
+ * @param {number=} opt_usage Usage.
+ * @struct
+ */
+ol.webgl.Buffer = function(opt_arr, opt_usage) {
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.arr_ = opt_arr !== undefined ? opt_arr : [];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.usage_ = opt_usage !== undefined ?
+ opt_usage : ol.webgl.BufferUsage.STATIC_DRAW;
+
+};
+
+
+/**
+ * @return {Array.<number>} Array.
+ */
+ol.webgl.Buffer.prototype.getArray = function() {
+ return this.arr_;
+};
+
+
+/**
+ * @return {number} Usage.
+ */
+ol.webgl.Buffer.prototype.getUsage = function() {
+ return this.usage_;
+};
+
+goog.provide('ol.webgl.Context');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Disposable');
+goog.require('ol.array');
+goog.require('ol.events');
+goog.require('ol.object');
+goog.require('ol.webgl.Buffer');
+goog.require('ol.webgl.WebGLContextEventType');
+
+
+/**
+ * @classdesc
+ * A WebGL context for accessing low-level WebGL capabilities.
+ *
+ * @constructor
+ * @extends {ol.Disposable}
+ * @param {HTMLCanvasElement} canvas Canvas.
+ * @param {WebGLRenderingContext} gl GL.
+ */
+ol.webgl.Context = function(canvas, gl) {
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = canvas;
+
+ /**
+ * @private
+ * @type {WebGLRenderingContext}
+ */
+ this.gl_ = gl;
+
+ /**
+ * @private
+ * @type {Object.<string, ol.WebglBufferCacheEntry>}
+ */
+ this.bufferCache_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, WebGLShader>}
+ */
+ this.shaderCache_ = {};
+
+ /**
+ * @private
+ * @type {Object.<string, WebGLProgram>}
+ */
+ this.programCache_ = {};
+
+ /**
+ * @private
+ * @type {WebGLProgram}
+ */
+ this.currentProgram_ = null;
+
+ /**
+ * @private
+ * @type {WebGLFramebuffer}
+ */
+ this.hitDetectionFramebuffer_ = null;
+
+ /**
+ * @private
+ * @type {WebGLTexture}
+ */
+ this.hitDetectionTexture_ = null;
+
+ /**
+ * @private
+ * @type {WebGLRenderbuffer}
+ */
+ this.hitDetectionRenderbuffer_ = null;
+
+ /**
+ * @type {boolean}
+ */
+ this.hasOESElementIndexUint = ol.array.includes(
+ ol.WEBGL_EXTENSIONS, 'OES_element_index_uint');
+
+ // use the OES_element_index_uint extension if available
+ if (this.hasOESElementIndexUint) {
+ var ext = gl.getExtension('OES_element_index_uint');
+ goog.asserts.assert(ext,
+ 'Failed to get extension "OES_element_index_uint"');
+ }
+
+ ol.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.LOST,
+ this.handleWebGLContextLost, this);
+ ol.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.RESTORED,
+ this.handleWebGLContextRestored, this);
+
+};
+ol.inherits(ol.webgl.Context, ol.Disposable);
+
+
+/**
+ * Just bind the buffer if it's in the cache. Otherwise create
+ * the WebGL buffer, bind it, populate it, and add an entry to
+ * the cache.
+ * @param {number} target Target.
+ * @param {ol.webgl.Buffer} buf Buffer.
+ */
+ol.webgl.Context.prototype.bindBuffer = function(target, buf) {
+ var gl = this.getGL();
+ var arr = buf.getArray();
+ var bufferKey = String(goog.getUid(buf));
+ if (bufferKey in this.bufferCache_) {
+ var bufferCacheEntry = this.bufferCache_[bufferKey];
+ gl.bindBuffer(target, bufferCacheEntry.buffer);
+ } else {
+ var buffer = gl.createBuffer();
+ gl.bindBuffer(target, buffer);
+ goog.asserts.assert(target == goog.webgl.ARRAY_BUFFER ||
+ target == goog.webgl.ELEMENT_ARRAY_BUFFER,
+ 'target is supposed to be an ARRAY_BUFFER or ELEMENT_ARRAY_BUFFER');
+ var /** @type {ArrayBufferView} */ arrayBuffer;
+ if (target == goog.webgl.ARRAY_BUFFER) {
+ arrayBuffer = new Float32Array(arr);
+ } else if (target == goog.webgl.ELEMENT_ARRAY_BUFFER) {
+ arrayBuffer = this.hasOESElementIndexUint ?
+ new Uint32Array(arr) : new Uint16Array(arr);
+ } else {
+ goog.asserts.fail();
+ }
+ gl.bufferData(target, arrayBuffer, buf.getUsage());
+ this.bufferCache_[bufferKey] = {
+ buf: buf,
+ buffer: buffer
+ };
+ }
+};
+
+
+/**
+ * @param {ol.webgl.Buffer} buf Buffer.
+ */
+ol.webgl.Context.prototype.deleteBuffer = function(buf) {
+ var gl = this.getGL();
+ var bufferKey = String(goog.getUid(buf));
+ goog.asserts.assert(bufferKey in this.bufferCache_,
+ 'attempted to delete uncached buffer');
+ var bufferCacheEntry = this.bufferCache_[bufferKey];
+ if (!gl.isContextLost()) {
+ gl.deleteBuffer(bufferCacheEntry.buffer);
+ }
+ delete this.bufferCache_[bufferKey];
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.webgl.Context.prototype.disposeInternal = function() {
+ ol.events.unlistenAll(this.canvas_);
+ var gl = this.getGL();
+ if (!gl.isContextLost()) {
+ var key;
+ for (key in this.bufferCache_) {
+ gl.deleteBuffer(this.bufferCache_[key].buffer);
+ }
+ for (key in this.programCache_) {
+ gl.deleteProgram(this.programCache_[key]);
+ }
+ for (key in this.shaderCache_) {
+ gl.deleteShader(this.shaderCache_[key]);
+ }
+ // delete objects for hit-detection
+ gl.deleteFramebuffer(this.hitDetectionFramebuffer_);
+ gl.deleteRenderbuffer(this.hitDetectionRenderbuffer_);
+ gl.deleteTexture(this.hitDetectionTexture_);
+ }
+};
+
+
+/**
+ * @return {HTMLCanvasElement} Canvas.
+ */
+ol.webgl.Context.prototype.getCanvas = function() {
+ return this.canvas_;
+};
+
+
+/**
+ * Get the WebGL rendering context
+ * @return {WebGLRenderingContext} The rendering context.
+ * @api
+ */
+ol.webgl.Context.prototype.getGL = function() {
+ return this.gl_;
+};
+
+
+/**
+ * Get the frame buffer for hit detection.
+ * @return {WebGLFramebuffer} The hit detection frame buffer.
+ */
+ol.webgl.Context.prototype.getHitDetectionFramebuffer = function() {
+ if (!this.hitDetectionFramebuffer_) {
+ this.initHitDetectionFramebuffer_();
+ }
+ return this.hitDetectionFramebuffer_;
+};
+
+
+/**
+ * Get shader from the cache if it's in the cache. Otherwise, create
+ * the WebGL shader, compile it, and add entry to cache.
+ * @param {ol.webgl.Shader} shaderObject Shader object.
+ * @return {WebGLShader} Shader.
+ */
+ol.webgl.Context.prototype.getShader = function(shaderObject) {
+ var shaderKey = String(goog.getUid(shaderObject));
+ if (shaderKey in this.shaderCache_) {
+ return this.shaderCache_[shaderKey];
+ } else {
+ var gl = this.getGL();
+ var shader = gl.createShader(shaderObject.getType());
+ gl.shaderSource(shader, shaderObject.getSource());
+ gl.compileShader(shader);
+ goog.asserts.assert(
+ gl.getShaderParameter(shader, goog.webgl.COMPILE_STATUS) ||
+ gl.isContextLost(),
+ gl.getShaderInfoLog(shader) || 'illegal state, shader not compiled or context lost');
+ this.shaderCache_[shaderKey] = shader;
+ return shader;
+ }
+};
+
+
+/**
+ * Get the program from the cache if it's in the cache. Otherwise create
+ * the WebGL program, attach the shaders to it, and add an entry to the
+ * cache.
+ * @param {ol.webgl.shader.Fragment} fragmentShaderObject Fragment shader.
+ * @param {ol.webgl.shader.Vertex} vertexShaderObject Vertex shader.
+ * @return {WebGLProgram} Program.
+ */
+ol.webgl.Context.prototype.getProgram = function(
+ fragmentShaderObject, vertexShaderObject) {
+ var programKey =
+ goog.getUid(fragmentShaderObject) + '/' + goog.getUid(vertexShaderObject);
+ if (programKey in this.programCache_) {
+ return this.programCache_[programKey];
+ } else {
+ var gl = this.getGL();
+ var program = gl.createProgram();
+ gl.attachShader(program, this.getShader(fragmentShaderObject));
+ gl.attachShader(program, this.getShader(vertexShaderObject));
+ gl.linkProgram(program);
+ goog.asserts.assert(
+ gl.getProgramParameter(program, goog.webgl.LINK_STATUS) ||
+ gl.isContextLost(),
+ gl.getProgramInfoLog(program) || 'illegal state, shader not linked or context lost');
+ this.programCache_[programKey] = program;
+ return program;
+ }
+};
+
+
+/**
+ * FIXME empy description for jsdoc
+ */
+ol.webgl.Context.prototype.handleWebGLContextLost = function() {
+ ol.object.clear(this.bufferCache_);
+ ol.object.clear(this.shaderCache_);
+ ol.object.clear(this.programCache_);
+ this.currentProgram_ = null;
+ this.hitDetectionFramebuffer_ = null;
+ this.hitDetectionTexture_ = null;
+ this.hitDetectionRenderbuffer_ = null;
+};
+
+
+/**
+ * FIXME empy description for jsdoc
+ */
+ol.webgl.Context.prototype.handleWebGLContextRestored = function() {
+};
+
+
+/**
+ * Creates a 1x1 pixel framebuffer for the hit-detection.
+ * @private
+ */
+ol.webgl.Context.prototype.initHitDetectionFramebuffer_ = function() {
+ var gl = this.gl_;
+ var framebuffer = gl.createFramebuffer();
+ gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+
+ var texture = ol.webgl.Context.createEmptyTexture(gl, 1, 1);
+ var renderbuffer = gl.createRenderbuffer();
+ gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer);
+ gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, 1, 1);
+ gl.framebufferTexture2D(
+ gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
+ gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT,
+ gl.RENDERBUFFER, renderbuffer);
+
+ gl.bindTexture(gl.TEXTURE_2D, null);
+ gl.bindRenderbuffer(gl.RENDERBUFFER, null);
+ gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+
+ this.hitDetectionFramebuffer_ = framebuffer;
+ this.hitDetectionTexture_ = texture;
+ this.hitDetectionRenderbuffer_ = renderbuffer;
+};
+
+
+/**
+ * Use a program. If the program is already in use, this will return `false`.
+ * @param {WebGLProgram} program Program.
+ * @return {boolean} Changed.
+ * @api
+ */
+ol.webgl.Context.prototype.useProgram = function(program) {
+ if (program == this.currentProgram_) {
+ return false;
+ } else {
+ var gl = this.getGL();
+ gl.useProgram(program);
+ this.currentProgram_ = program;
+ return true;
+ }
+};
+
+
+/**
+ * @param {WebGLRenderingContext} gl WebGL rendering context.
+ * @param {number=} opt_wrapS wrapS.
+ * @param {number=} opt_wrapT wrapT.
+ * @return {WebGLTexture} The texture.
+ * @private
+ */
+ol.webgl.Context.createTexture_ = function(gl, opt_wrapS, opt_wrapT) {
+ var texture = gl.createTexture();
+ gl.bindTexture(gl.TEXTURE_2D, texture);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+
+ if (opt_wrapS !== undefined) {
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_S, opt_wrapS);
+ }
+ if (opt_wrapT !== undefined) {
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_T, opt_wrapT);
+ }
+
+ return texture;
+};
+
+
+/**
+ * @param {WebGLRenderingContext} gl WebGL rendering context.
+ * @param {number} width Width.
+ * @param {number} height Height.
+ * @param {number=} opt_wrapS wrapS.
+ * @param {number=} opt_wrapT wrapT.
+ * @return {WebGLTexture} The texture.
+ */
+ol.webgl.Context.createEmptyTexture = function(
+ gl, width, height, opt_wrapS, opt_wrapT) {
+ var texture = ol.webgl.Context.createTexture_(gl, opt_wrapS, opt_wrapT);
+ gl.texImage2D(
+ gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE,
+ null);
+
+ return texture;
+};
+
+
+/**
+ * @param {WebGLRenderingContext} gl WebGL rendering context.
+ * @param {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} image Image.
+ * @param {number=} opt_wrapS wrapS.
+ * @param {number=} opt_wrapT wrapT.
+ * @return {WebGLTexture} The texture.
+ */
+ol.webgl.Context.createTexture = function(gl, image, opt_wrapS, opt_wrapT) {
+ var texture = ol.webgl.Context.createTexture_(gl, opt_wrapS, opt_wrapT);
+ gl.texImage2D(
+ gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
+
+ return texture;
+};
+
+goog.provide('ol.render.webgl.ImageReplay');
+goog.provide('ol.render.webgl.ReplayGroup');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.render.IReplayGroup');
+goog.require('ol.render.VectorContext');
+goog.require('ol.render.webgl.imagereplay.shader.Default');
+goog.require('ol.render.webgl.imagereplay.shader.Default.Locations');
+goog.require('ol.render.webgl.imagereplay.shader.DefaultFragment');
+goog.require('ol.render.webgl.imagereplay.shader.DefaultVertex');
+goog.require('ol.vec.Mat4');
+goog.require('ol.webgl.Buffer');
+goog.require('ol.webgl.Context');
+
+
+/**
+ * @constructor
+ * @extends {ol.render.VectorContext}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Max extent.
+ * @protected
+ * @struct
+ */
+ol.render.webgl.ImageReplay = function(tolerance, maxExtent) {
+ ol.render.VectorContext.call(this);
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.anchorX_ = undefined;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.anchorY_ = undefined;
+
+ /**
+ * The origin of the coordinate system for the point coordinates sent to
+ * the GPU. To eliminate jitter caused by precision problems in the GPU
+ * we use the "Rendering Relative to Eye" technique described in the "3D
+ * Engine Design for Virtual Globes" book.
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.origin_ = ol.extent.getCenter(maxExtent);
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.groupIndices_ = [];
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.hitDetectionGroupIndices_ = [];
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.height_ = undefined;
+
+ /**
+ * @type {Array.<HTMLCanvasElement|HTMLImageElement|HTMLVideoElement>}
+ * @private
+ */
+ this.images_ = [];
+
+ /**
+ * @type {Array.<HTMLCanvasElement|HTMLImageElement|HTMLVideoElement>}
+ * @private
+ */
+ this.hitDetectionImages_ = [];
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.imageHeight_ = undefined;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.imageWidth_ = undefined;
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.indices_ = [];
+
+ /**
+ * @type {ol.webgl.Buffer}
+ * @private
+ */
+ this.indicesBuffer_ = null;
+
+ /**
+ * @private
+ * @type {ol.render.webgl.imagereplay.shader.Default.Locations}
+ */
+ this.defaultLocations_ = null;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.opacity_ = undefined;
+
+ /**
+ * @type {!goog.vec.Mat4.Number}
+ * @private
+ */
+ this.offsetRotateMatrix_ = goog.vec.Mat4.createNumberIdentity();
+
+ /**
+ * @type {!goog.vec.Mat4.Number}
+ * @private
+ */
+ this.offsetScaleMatrix_ = goog.vec.Mat4.createNumberIdentity();
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.originX_ = undefined;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.originY_ = undefined;
+
+ /**
+ * @type {!goog.vec.Mat4.Number}
+ * @private
+ */
+ this.projectionMatrix_ = goog.vec.Mat4.createNumberIdentity();
+
+ /**
+ * @private
+ * @type {boolean|undefined}
+ */
+ this.rotateWithView_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.rotation_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.scale_ = undefined;
+
+ /**
+ * @type {Array.<WebGLTexture>}
+ * @private
+ */
+ this.textures_ = [];
+
+ /**
+ * @type {Array.<WebGLTexture>}
+ * @private
+ */
+ this.hitDetectionTextures_ = [];
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.vertices_ = [];
+
+ /**
+ * @type {ol.webgl.Buffer}
+ * @private
+ */
+ this.verticesBuffer_ = null;
+
+ /**
+ * Start index per feature (the index).
+ * @type {Array.<number>}
+ * @private
+ */
+ this.startIndices_ = [];
+
+ /**
+ * Start index per feature (the feature).
+ * @type {Array.<ol.Feature|ol.render.Feature>}
+ * @private
+ */
+ this.startIndicesFeature_ = [];
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.width_ = undefined;
+};
+ol.inherits(ol.render.webgl.ImageReplay, ol.render.VectorContext);
+
+
+/**
+ * @param {ol.webgl.Context} context WebGL context.
+ * @return {function()} Delete resources function.
+ */
+ol.render.webgl.ImageReplay.prototype.getDeleteResourcesFunction = function(context) {
+ // We only delete our stuff here. The shaders and the program may
+ // be used by other ImageReplay instances (for other layers). And
+ // they will be deleted when disposing of the ol.webgl.Context
+ // object.
+ goog.asserts.assert(this.verticesBuffer_,
+ 'verticesBuffer must not be null');
+ goog.asserts.assert(this.indicesBuffer_,
+ 'indicesBuffer must not be null');
+ var verticesBuffer = this.verticesBuffer_;
+ var indicesBuffer = this.indicesBuffer_;
+ var textures = this.textures_;
+ var hitDetectionTextures = this.hitDetectionTextures_;
+ var gl = context.getGL();
+ return function() {
+ if (!gl.isContextLost()) {
+ var i, ii;
+ for (i = 0, ii = textures.length; i < ii; ++i) {
+ gl.deleteTexture(textures[i]);
+ }
+ for (i = 0, ii = hitDetectionTextures.length; i < ii; ++i) {
+ gl.deleteTexture(hitDetectionTextures[i]);
+ }
+ }
+ context.deleteBuffer(verticesBuffer);
+ context.deleteBuffer(indicesBuffer);
+ };
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {number} My end.
+ * @private
+ */
+ol.render.webgl.ImageReplay.prototype.drawCoordinates_ = function(flatCoordinates, offset, end, stride) {
+ goog.asserts.assert(this.anchorX_ !== undefined, 'anchorX is defined');
+ goog.asserts.assert(this.anchorY_ !== undefined, 'anchorY is defined');
+ goog.asserts.assert(this.height_ !== undefined, 'height is defined');
+ goog.asserts.assert(this.imageHeight_ !== undefined,
+ 'imageHeight is defined');
+ goog.asserts.assert(this.imageWidth_ !== undefined, 'imageWidth is defined');
+ goog.asserts.assert(this.opacity_ !== undefined, 'opacity is defined');
+ goog.asserts.assert(this.originX_ !== undefined, 'originX is defined');
+ goog.asserts.assert(this.originY_ !== undefined, 'originY is defined');
+ goog.asserts.assert(this.rotateWithView_ !== undefined,
+ 'rotateWithView is defined');
+ goog.asserts.assert(this.rotation_ !== undefined, 'rotation is defined');
+ goog.asserts.assert(this.scale_ !== undefined, 'scale is defined');
+ goog.asserts.assert(this.width_ !== undefined, 'width is defined');
+ var anchorX = this.anchorX_;
+ var anchorY = this.anchorY_;
+ var height = this.height_;
+ var imageHeight = this.imageHeight_;
+ var imageWidth = this.imageWidth_;
+ var opacity = this.opacity_;
+ var originX = this.originX_;
+ var originY = this.originY_;
+ var rotateWithView = this.rotateWithView_ ? 1.0 : 0.0;
+ var rotation = this.rotation_;
+ var scale = this.scale_;
+ var width = this.width_;
+ var cos = Math.cos(rotation);
+ var sin = Math.sin(rotation);
+ var numIndices = this.indices_.length;
+ var numVertices = this.vertices_.length;
+ var i, n, offsetX, offsetY, x, y;
+ for (i = offset; i < end; i += stride) {
+ x = flatCoordinates[i] - this.origin_[0];
+ y = flatCoordinates[i + 1] - this.origin_[1];
+
+ // There are 4 vertices per [x, y] point, one for each corner of the
+ // rectangle we're going to draw. We'd use 1 vertex per [x, y] point if
+ // WebGL supported Geometry Shaders (which can emit new vertices), but that
+ // is not currently the case.
+ //
+ // And each vertex includes 8 values: the x and y coordinates, the x and
+ // y offsets used to calculate the position of the corner, the u and
+ // v texture coordinates for the corner, the opacity, and whether the
+ // the image should be rotated with the view (rotateWithView).
+
+ n = numVertices / 8;
+
+ // bottom-left corner
+ offsetX = -scale * anchorX;
+ offsetY = -scale * (height - anchorY);
+ this.vertices_[numVertices++] = x;
+ this.vertices_[numVertices++] = y;
+ this.vertices_[numVertices++] = offsetX * cos - offsetY * sin;
+ this.vertices_[numVertices++] = offsetX * sin + offsetY * cos;
+ this.vertices_[numVertices++] = originX / imageWidth;
+ this.vertices_[numVertices++] = (originY + height) / imageHeight;
+ this.vertices_[numVertices++] = opacity;
+ this.vertices_[numVertices++] = rotateWithView;
+
+ // bottom-right corner
+ offsetX = scale * (width - anchorX);
+ offsetY = -scale * (height - anchorY);
+ this.vertices_[numVertices++] = x;
+ this.vertices_[numVertices++] = y;
+ this.vertices_[numVertices++] = offsetX * cos - offsetY * sin;
+ this.vertices_[numVertices++] = offsetX * sin + offsetY * cos;
+ this.vertices_[numVertices++] = (originX + width) / imageWidth;
+ this.vertices_[numVertices++] = (originY + height) / imageHeight;
+ this.vertices_[numVertices++] = opacity;
+ this.vertices_[numVertices++] = rotateWithView;
+
+ // top-right corner
+ offsetX = scale * (width - anchorX);
+ offsetY = scale * anchorY;
+ this.vertices_[numVertices++] = x;
+ this.vertices_[numVertices++] = y;
+ this.vertices_[numVertices++] = offsetX * cos - offsetY * sin;
+ this.vertices_[numVertices++] = offsetX * sin + offsetY * cos;
+ this.vertices_[numVertices++] = (originX + width) / imageWidth;
+ this.vertices_[numVertices++] = originY / imageHeight;
+ this.vertices_[numVertices++] = opacity;
+ this.vertices_[numVertices++] = rotateWithView;
+
+ // top-left corner
+ offsetX = -scale * anchorX;
+ offsetY = scale * anchorY;
+ this.vertices_[numVertices++] = x;
+ this.vertices_[numVertices++] = y;
+ this.vertices_[numVertices++] = offsetX * cos - offsetY * sin;
+ this.vertices_[numVertices++] = offsetX * sin + offsetY * cos;
+ this.vertices_[numVertices++] = originX / imageWidth;
+ this.vertices_[numVertices++] = originY / imageHeight;
+ this.vertices_[numVertices++] = opacity;
+ this.vertices_[numVertices++] = rotateWithView;
+
+ this.indices_[numIndices++] = n;
+ this.indices_[numIndices++] = n + 1;
+ this.indices_[numIndices++] = n + 2;
+ this.indices_[numIndices++] = n;
+ this.indices_[numIndices++] = n + 2;
+ this.indices_[numIndices++] = n + 3;
+ }
+
+ return numVertices;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ImageReplay.prototype.drawMultiPoint = function(multiPointGeometry, feature) {
+ this.startIndices_.push(this.indices_.length);
+ this.startIndicesFeature_.push(feature);
+ var flatCoordinates = multiPointGeometry.getFlatCoordinates();
+ var stride = multiPointGeometry.getStride();
+ this.drawCoordinates_(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ImageReplay.prototype.drawPoint = function(pointGeometry, feature) {
+ this.startIndices_.push(this.indices_.length);
+ this.startIndicesFeature_.push(feature);
+ var flatCoordinates = pointGeometry.getFlatCoordinates();
+ var stride = pointGeometry.getStride();
+ this.drawCoordinates_(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+};
+
+
+/**
+ * @param {ol.webgl.Context} context Context.
+ */
+ol.render.webgl.ImageReplay.prototype.finish = function(context) {
+ var gl = context.getGL();
+
+ this.groupIndices_.push(this.indices_.length);
+ goog.asserts.assert(this.images_.length === this.groupIndices_.length,
+ 'number of images and groupIndices match');
+ this.hitDetectionGroupIndices_.push(this.indices_.length);
+ goog.asserts.assert(this.hitDetectionImages_.length ===
+ this.hitDetectionGroupIndices_.length,
+ 'number of hitDetectionImages and hitDetectionGroupIndices match');
+
+ // create, bind, and populate the vertices buffer
+ this.verticesBuffer_ = new ol.webgl.Buffer(this.vertices_);
+ context.bindBuffer(goog.webgl.ARRAY_BUFFER, this.verticesBuffer_);
+
+ var indices = this.indices_;
+ var bits = context.hasOESElementIndexUint ? 32 : 16;
+ goog.asserts.assert(indices[indices.length - 1] < Math.pow(2, bits),
+ 'Too large element index detected [%s] (OES_element_index_uint "%s")',
+ indices[indices.length - 1], context.hasOESElementIndexUint);
+
+ // create, bind, and populate the indices buffer
+ this.indicesBuffer_ = new ol.webgl.Buffer(indices);
+ context.bindBuffer(goog.webgl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer_);
+
+ // create textures
+ /** @type {Object.<string, WebGLTexture>} */
+ var texturePerImage = {};
+
+ this.createTextures_(this.textures_, this.images_, texturePerImage, gl);
+ goog.asserts.assert(this.textures_.length === this.groupIndices_.length,
+ 'number of textures and groupIndices match');
+
+ this.createTextures_(this.hitDetectionTextures_, this.hitDetectionImages_,
+ texturePerImage, gl);
+ goog.asserts.assert(this.hitDetectionTextures_.length ===
+ this.hitDetectionGroupIndices_.length,
+ 'number of hitDetectionTextures and hitDetectionGroupIndices match');
+
+ this.anchorX_ = undefined;
+ this.anchorY_ = undefined;
+ this.height_ = undefined;
+ this.images_ = null;
+ this.hitDetectionImages_ = null;
+ this.imageHeight_ = undefined;
+ this.imageWidth_ = undefined;
+ this.indices_ = null;
+ this.opacity_ = undefined;
+ this.originX_ = undefined;
+ this.originY_ = undefined;
+ this.rotateWithView_ = undefined;
+ this.rotation_ = undefined;
+ this.scale_ = undefined;
+ this.vertices_ = null;
+ this.width_ = undefined;
+};
+
+
+/**
+ * @private
+ * @param {Array.<WebGLTexture>} textures Textures.
+ * @param {Array.<HTMLCanvasElement|HTMLImageElement|HTMLVideoElement>} images
+ * Images.
+ * @param {Object.<string, WebGLTexture>} texturePerImage Texture cache.
+ * @param {WebGLRenderingContext} gl Gl.
+ */
+ol.render.webgl.ImageReplay.prototype.createTextures_ = function(textures, images, texturePerImage, gl) {
+ goog.asserts.assert(textures.length === 0,
+ 'upon creation, textures is empty');
+
+ var texture, image, uid, i;
+ var ii = images.length;
+ for (i = 0; i < ii; ++i) {
+ image = images[i];
+
+ uid = goog.getUid(image).toString();
+ if (uid in texturePerImage) {
+ texture = texturePerImage[uid];
+ } else {
+ texture = ol.webgl.Context.createTexture(
+ gl, image, goog.webgl.CLAMP_TO_EDGE, goog.webgl.CLAMP_TO_EDGE);
+ texturePerImage[uid] = texture;
+ }
+ textures[i] = texture;
+ }
+};
+
+
+/**
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} opacity Global opacity.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} featureCallback Feature callback.
+ * @param {boolean} oneByOne Draw features one-by-one for the hit-detecion.
+ * @param {ol.Extent=} opt_hitExtent Hit extent: Only features intersecting
+ * this extent are checked.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ImageReplay.prototype.replay = function(context,
+ center, resolution, rotation, size, pixelRatio,
+ opacity, skippedFeaturesHash,
+ featureCallback, oneByOne, opt_hitExtent) {
+ var gl = context.getGL();
+
+ // bind the vertices buffer
+ goog.asserts.assert(this.verticesBuffer_,
+ 'verticesBuffer must not be null');
+ context.bindBuffer(goog.webgl.ARRAY_BUFFER, this.verticesBuffer_);
+
+ // bind the indices buffer
+ goog.asserts.assert(this.indicesBuffer_,
+ 'indecesBuffer must not be null');
+ context.bindBuffer(goog.webgl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer_);
+
+ // get the program
+ var fragmentShader =
+ ol.render.webgl.imagereplay.shader.DefaultFragment.getInstance();
+ var vertexShader =
+ ol.render.webgl.imagereplay.shader.DefaultVertex.getInstance();
+ var program = context.getProgram(fragmentShader, vertexShader);
+
+ // get the locations
+ var locations;
+ if (!this.defaultLocations_) {
+ locations =
+ new ol.render.webgl.imagereplay.shader.Default.Locations(gl, program);
+ this.defaultLocations_ = locations;
+ } else {
+ locations = this.defaultLocations_;
+ }
+
+ // use the program (FIXME: use the return value)
+ context.useProgram(program);
+
+ // enable the vertex attrib arrays
+ gl.enableVertexAttribArray(locations.a_position);
+ gl.vertexAttribPointer(locations.a_position, 2, goog.webgl.FLOAT,
+ false, 32, 0);
+
+ gl.enableVertexAttribArray(locations.a_offsets);
+ gl.vertexAttribPointer(locations.a_offsets, 2, goog.webgl.FLOAT,
+ false, 32, 8);
+
+ gl.enableVertexAttribArray(locations.a_texCoord);
+ gl.vertexAttribPointer(locations.a_texCoord, 2, goog.webgl.FLOAT,
+ false, 32, 16);
+
+ gl.enableVertexAttribArray(locations.a_opacity);
+ gl.vertexAttribPointer(locations.a_opacity, 1, goog.webgl.FLOAT,
+ false, 32, 24);
+
+ gl.enableVertexAttribArray(locations.a_rotateWithView);
+ gl.vertexAttribPointer(locations.a_rotateWithView, 1, goog.webgl.FLOAT,
+ false, 32, 28);
+
+ // set the "uniform" values
+ var projectionMatrix = this.projectionMatrix_;
+ ol.vec.Mat4.makeTransform2D(projectionMatrix,
+ 0.0, 0.0,
+ 2 / (resolution * size[0]),
+ 2 / (resolution * size[1]),
+ -rotation,
+ -(center[0] - this.origin_[0]), -(center[1] - this.origin_[1]));
+
+ var offsetScaleMatrix = this.offsetScaleMatrix_;
+ goog.vec.Mat4.makeScale(offsetScaleMatrix, 2 / size[0], 2 / size[1], 1);
+
+ var offsetRotateMatrix = this.offsetRotateMatrix_;
+ goog.vec.Mat4.makeIdentity(offsetRotateMatrix);
+ if (rotation !== 0) {
+ goog.vec.Mat4.rotateZ(offsetRotateMatrix, -rotation);
+ }
+
+ gl.uniformMatrix4fv(locations.u_projectionMatrix, false, projectionMatrix);
+ gl.uniformMatrix4fv(locations.u_offsetScaleMatrix, false, offsetScaleMatrix);
+ gl.uniformMatrix4fv(locations.u_offsetRotateMatrix, false,
+ offsetRotateMatrix);
+ gl.uniform1f(locations.u_opacity, opacity);
+
+ // draw!
+ var result;
+ if (featureCallback === undefined) {
+ this.drawReplay_(gl, context, skippedFeaturesHash,
+ this.textures_, this.groupIndices_);
+ } else {
+ // draw feature by feature for the hit-detection
+ result = this.drawHitDetectionReplay_(gl, context, skippedFeaturesHash,
+ featureCallback, oneByOne, opt_hitExtent);
+ }
+
+ // disable the vertex attrib arrays
+ gl.disableVertexAttribArray(locations.a_position);
+ gl.disableVertexAttribArray(locations.a_offsets);
+ gl.disableVertexAttribArray(locations.a_texCoord);
+ gl.disableVertexAttribArray(locations.a_opacity);
+ gl.disableVertexAttribArray(locations.a_rotateWithView);
+
+ return result;
+};
+
+
+/**
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {ol.webgl.Context} context Context.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {Array.<WebGLTexture>} textures Textures.
+ * @param {Array.<number>} groupIndices Texture group indices.
+ */
+ol.render.webgl.ImageReplay.prototype.drawReplay_ = function(gl, context, skippedFeaturesHash, textures, groupIndices) {
+ goog.asserts.assert(textures.length === groupIndices.length,
+ 'number of textures and groupIndeces match');
+ var elementType = context.hasOESElementIndexUint ?
+ goog.webgl.UNSIGNED_INT : goog.webgl.UNSIGNED_SHORT;
+ var elementSize = context.hasOESElementIndexUint ? 4 : 2;
+
+ if (!ol.object.isEmpty(skippedFeaturesHash)) {
+ this.drawReplaySkipping_(
+ gl, skippedFeaturesHash, textures, groupIndices,
+ elementType, elementSize);
+ } else {
+ var i, ii, start;
+ for (i = 0, ii = textures.length, start = 0; i < ii; ++i) {
+ gl.bindTexture(goog.webgl.TEXTURE_2D, textures[i]);
+ var end = groupIndices[i];
+ this.drawElements_(gl, start, end, elementType, elementSize);
+ start = end;
+ }
+ }
+};
+
+
+/**
+ * Draw the replay while paying attention to skipped features.
+ *
+ * This functions creates groups of features that can be drawn to together,
+ * so that the number of `drawElements` calls is minimized.
+ *
+ * For example given the following texture groups:
+ *
+ * Group 1: A B C
+ * Group 2: D [E] F G
+ *
+ * If feature E should be skipped, the following `drawElements` calls will be
+ * made:
+ *
+ * drawElements with feature A, B and C
+ * drawElements with feature D
+ * drawElements with feature F and G
+ *
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {Array.<WebGLTexture>} textures Textures.
+ * @param {Array.<number>} groupIndices Texture group indices.
+ * @param {number} elementType Element type.
+ * @param {number} elementSize Element Size.
+ */
+ol.render.webgl.ImageReplay.prototype.drawReplaySkipping_ = function(gl, skippedFeaturesHash, textures, groupIndices,
+ elementType, elementSize) {
+ var featureIndex = 0;
+
+ var i, ii;
+ for (i = 0, ii = textures.length; i < ii; ++i) {
+ gl.bindTexture(goog.webgl.TEXTURE_2D, textures[i]);
+ var groupStart = (i > 0) ? groupIndices[i - 1] : 0;
+ var groupEnd = groupIndices[i];
+
+ var start = groupStart;
+ var end = groupStart;
+ while (featureIndex < this.startIndices_.length &&
+ this.startIndices_[featureIndex] <= groupEnd) {
+ var feature = this.startIndicesFeature_[featureIndex];
+
+ var featureUid = goog.getUid(feature).toString();
+ if (skippedFeaturesHash[featureUid] !== undefined) {
+ // feature should be skipped
+ if (start !== end) {
+ // draw the features so far
+ this.drawElements_(gl, start, end, elementType, elementSize);
+ }
+ // continue with the next feature
+ start = (featureIndex === this.startIndices_.length - 1) ?
+ groupEnd : this.startIndices_[featureIndex + 1];
+ end = start;
+ } else {
+ // the feature is not skipped, augment the end index
+ end = (featureIndex === this.startIndices_.length - 1) ?
+ groupEnd : this.startIndices_[featureIndex + 1];
+ }
+ featureIndex++;
+ }
+
+ if (start !== end) {
+ // draw the remaining features (in case there was no skipped feature
+ // in this texture group, all features of a group are drawn together)
+ this.drawElements_(gl, start, end, elementType, elementSize);
+ }
+ }
+};
+
+
+/**
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {number} start Start index.
+ * @param {number} end End index.
+ * @param {number} elementType Element type.
+ * @param {number} elementSize Element Size.
+ */
+ol.render.webgl.ImageReplay.prototype.drawElements_ = function(
+ gl, start, end, elementType, elementSize) {
+ var numItems = end - start;
+ var offsetInBytes = start * elementSize;
+ gl.drawElements(goog.webgl.TRIANGLES, numItems, elementType, offsetInBytes);
+};
+
+
+/**
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {ol.webgl.Context} context Context.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} featureCallback Feature callback.
+ * @param {boolean} oneByOne Draw features one-by-one for the hit-detecion.
+ * @param {ol.Extent=} opt_hitExtent Hit extent: Only features intersecting
+ * this extent are checked.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ImageReplay.prototype.drawHitDetectionReplay_ = function(gl, context, skippedFeaturesHash, featureCallback, oneByOne,
+ opt_hitExtent) {
+ if (!oneByOne) {
+ // draw all hit-detection features in "once" (by texture group)
+ return this.drawHitDetectionReplayAll_(gl, context,
+ skippedFeaturesHash, featureCallback);
+ } else {
+ // draw hit-detection features one by one
+ return this.drawHitDetectionReplayOneByOne_(gl, context,
+ skippedFeaturesHash, featureCallback, opt_hitExtent);
+ }
+};
+
+
+/**
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {ol.webgl.Context} context Context.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} featureCallback Feature callback.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ImageReplay.prototype.drawHitDetectionReplayAll_ = function(gl, context, skippedFeaturesHash, featureCallback) {
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+ this.drawReplay_(gl, context, skippedFeaturesHash,
+ this.hitDetectionTextures_, this.hitDetectionGroupIndices_);
+
+ var result = featureCallback(null);
+ if (result) {
+ return result;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @private
+ * @param {WebGLRenderingContext} gl gl.
+ * @param {ol.webgl.Context} context Context.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} featureCallback Feature callback.
+ * @param {ol.Extent=} opt_hitExtent Hit extent: Only features intersecting
+ * this extent are checked.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ImageReplay.prototype.drawHitDetectionReplayOneByOne_ = function(gl, context, skippedFeaturesHash, featureCallback,
+ opt_hitExtent) {
+ goog.asserts.assert(this.hitDetectionTextures_.length ===
+ this.hitDetectionGroupIndices_.length,
+ 'number of hitDetectionTextures and hitDetectionGroupIndices match');
+ var elementType = context.hasOESElementIndexUint ?
+ goog.webgl.UNSIGNED_INT : goog.webgl.UNSIGNED_SHORT;
+ var elementSize = context.hasOESElementIndexUint ? 4 : 2;
+
+ var i, groupStart, start, end, feature, featureUid;
+ var featureIndex = this.startIndices_.length - 1;
+ for (i = this.hitDetectionTextures_.length - 1; i >= 0; --i) {
+ gl.bindTexture(goog.webgl.TEXTURE_2D, this.hitDetectionTextures_[i]);
+ groupStart = (i > 0) ? this.hitDetectionGroupIndices_[i - 1] : 0;
+ end = this.hitDetectionGroupIndices_[i];
+
+ // draw all features for this texture group
+ while (featureIndex >= 0 &&
+ this.startIndices_[featureIndex] >= groupStart) {
+ start = this.startIndices_[featureIndex];
+ feature = this.startIndicesFeature_[featureIndex];
+ featureUid = goog.getUid(feature).toString();
+
+ if (skippedFeaturesHash[featureUid] === undefined &&
+ feature.getGeometry() &&
+ (opt_hitExtent === undefined || ol.extent.intersects(
+ /** @type {Array<number>} */ (opt_hitExtent),
+ feature.getGeometry().getExtent()))) {
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+ this.drawElements_(gl, start, end, elementType, elementSize);
+
+ var result = featureCallback(feature);
+ if (result) {
+ return result;
+ }
+ }
+
+ end = start;
+ featureIndex--;
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ImageReplay.prototype.setFillStrokeStyle = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ImageReplay.prototype.setImageStyle = function(imageStyle) {
+ var anchor = imageStyle.getAnchor();
+ var image = imageStyle.getImage(1);
+ var imageSize = imageStyle.getImageSize();
+ var hitDetectionImage = imageStyle.getHitDetectionImage(1);
+ var hitDetectionImageSize = imageStyle.getHitDetectionImageSize();
+ var opacity = imageStyle.getOpacity();
+ var origin = imageStyle.getOrigin();
+ var rotateWithView = imageStyle.getRotateWithView();
+ var rotation = imageStyle.getRotation();
+ var size = imageStyle.getSize();
+ var scale = imageStyle.getScale();
+ goog.asserts.assert(anchor, 'imageStyle anchor is not null');
+ goog.asserts.assert(image, 'imageStyle image is not null');
+ goog.asserts.assert(imageSize,
+ 'imageStyle imageSize is not null');
+ goog.asserts.assert(hitDetectionImage,
+ 'imageStyle hitDetectionImage is not null');
+ goog.asserts.assert(hitDetectionImageSize,
+ 'imageStyle hitDetectionImageSize is not null');
+ goog.asserts.assert(opacity !== undefined, 'imageStyle opacity is defined');
+ goog.asserts.assert(origin, 'imageStyle origin is not null');
+ goog.asserts.assert(rotateWithView !== undefined,
+ 'imageStyle rotateWithView is defined');
+ goog.asserts.assert(rotation !== undefined, 'imageStyle rotation is defined');
+ goog.asserts.assert(size, 'imageStyle size is not null');
+ goog.asserts.assert(scale !== undefined, 'imageStyle scale is defined');
+
+ var currentImage;
+ if (this.images_.length === 0) {
+ this.images_.push(image);
+ } else {
+ currentImage = this.images_[this.images_.length - 1];
+ if (goog.getUid(currentImage) != goog.getUid(image)) {
+ this.groupIndices_.push(this.indices_.length);
+ goog.asserts.assert(this.groupIndices_.length === this.images_.length,
+ 'number of groupIndices and images match');
+ this.images_.push(image);
+ }
+ }
+
+ if (this.hitDetectionImages_.length === 0) {
+ this.hitDetectionImages_.push(hitDetectionImage);
+ } else {
+ currentImage =
+ this.hitDetectionImages_[this.hitDetectionImages_.length - 1];
+ if (goog.getUid(currentImage) != goog.getUid(hitDetectionImage)) {
+ this.hitDetectionGroupIndices_.push(this.indices_.length);
+ goog.asserts.assert(this.hitDetectionGroupIndices_.length ===
+ this.hitDetectionImages_.length,
+ 'number of hitDetectionGroupIndices and hitDetectionImages match');
+ this.hitDetectionImages_.push(hitDetectionImage);
+ }
+ }
+
+ this.anchorX_ = anchor[0];
+ this.anchorY_ = anchor[1];
+ this.height_ = size[1];
+ this.imageHeight_ = imageSize[1];
+ this.imageWidth_ = imageSize[0];
+ this.opacity_ = opacity;
+ this.originX_ = origin[0];
+ this.originY_ = origin[1];
+ this.rotation_ = rotation;
+ this.rotateWithView_ = rotateWithView;
+ this.scale_ = scale;
+ this.width_ = size[0];
+};
+
+
+/**
+ * @constructor
+ * @implements {ol.render.IReplayGroup}
+ * @param {number} tolerance Tolerance.
+ * @param {ol.Extent} maxExtent Max extent.
+ * @param {number=} opt_renderBuffer Render buffer.
+ * @struct
+ */
+ol.render.webgl.ReplayGroup = function(
+ tolerance, maxExtent, opt_renderBuffer) {
+
+ /**
+ * @type {ol.Extent}
+ * @private
+ */
+ this.maxExtent_ = maxExtent;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.tolerance_ = tolerance;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.renderBuffer_ = opt_renderBuffer;
+
+ /**
+ * ImageReplay only is supported at this point.
+ * @type {Object.<ol.render.ReplayType, ol.render.webgl.ImageReplay>}
+ * @private
+ */
+ this.replays_ = {};
+
+};
+
+
+/**
+ * @param {ol.webgl.Context} context WebGL context.
+ * @return {function()} Delete resources function.
+ */
+ol.render.webgl.ReplayGroup.prototype.getDeleteResourcesFunction = function(context) {
+ var functions = [];
+ var replayKey;
+ for (replayKey in this.replays_) {
+ functions.push(
+ this.replays_[replayKey].getDeleteResourcesFunction(context));
+ }
+ return function() {
+ var length = functions.length;
+ var result;
+ for (var i = 0; i < length; i++) {
+ result = functions[i].apply(this, arguments);
+ }
+ return result;
+ };
+};
+
+
+/**
+ * @param {ol.webgl.Context} context Context.
+ */
+ol.render.webgl.ReplayGroup.prototype.finish = function(context) {
+ var replayKey;
+ for (replayKey in this.replays_) {
+ this.replays_[replayKey].finish(context);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ReplayGroup.prototype.getReplay = function(zIndex, replayType) {
+ var replay = this.replays_[replayType];
+ if (replay === undefined) {
+ var constructor = ol.render.webgl.BATCH_CONSTRUCTORS_[replayType];
+ goog.asserts.assert(constructor !== undefined,
+ replayType +
+ ' constructor missing from ol.render.webgl.BATCH_CONSTRUCTORS_');
+ replay = new constructor(this.tolerance_, this.maxExtent_);
+ this.replays_[replayType] = replay;
+ }
+ return replay;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.ReplayGroup.prototype.isEmpty = function() {
+ return ol.object.isEmpty(this.replays_);
+};
+
+
+/**
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} opacity Global opacity.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ */
+ol.render.webgl.ReplayGroup.prototype.replay = function(context,
+ center, resolution, rotation, size, pixelRatio,
+ opacity, skippedFeaturesHash) {
+ var i, ii, replay;
+ for (i = 0, ii = ol.render.REPLAY_ORDER.length; i < ii; ++i) {
+ replay = this.replays_[ol.render.REPLAY_ORDER[i]];
+ if (replay !== undefined) {
+ replay.replay(context,
+ center, resolution, rotation, size, pixelRatio,
+ opacity, skippedFeaturesHash,
+ undefined, false);
+ }
+ }
+};
+
+
+/**
+ * @private
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} opacity Global opacity.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} featureCallback Feature callback.
+ * @param {boolean} oneByOne Draw features one-by-one for the hit-detecion.
+ * @param {ol.Extent=} opt_hitExtent Hit extent: Only features intersecting
+ * this extent are checked.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ReplayGroup.prototype.replayHitDetection_ = function(context,
+ center, resolution, rotation, size, pixelRatio, opacity,
+ skippedFeaturesHash, featureCallback, oneByOne, opt_hitExtent) {
+ var i, replay, result;
+ for (i = ol.render.REPLAY_ORDER.length - 1; i >= 0; --i) {
+ replay = this.replays_[ol.render.REPLAY_ORDER[i]];
+ if (replay !== undefined) {
+ result = replay.replay(context,
+ center, resolution, rotation, size, pixelRatio, opacity,
+ skippedFeaturesHash, featureCallback, oneByOne, opt_hitExtent);
+ if (result) {
+ return result;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} opacity Global opacity.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @param {function((ol.Feature|ol.render.Feature)): T|undefined} callback Feature callback.
+ * @return {T|undefined} Callback result.
+ * @template T
+ */
+ol.render.webgl.ReplayGroup.prototype.forEachFeatureAtCoordinate = function(
+ coordinate, context, center, resolution, rotation, size, pixelRatio,
+ opacity, skippedFeaturesHash,
+ callback) {
+ var gl = context.getGL();
+ gl.bindFramebuffer(
+ gl.FRAMEBUFFER, context.getHitDetectionFramebuffer());
+
+
+ /**
+ * @type {ol.Extent}
+ */
+ var hitExtent;
+ if (this.renderBuffer_ !== undefined) {
+ // build an extent around the coordinate, so that only features that
+ // intersect this extent are checked
+ hitExtent = ol.extent.buffer(
+ ol.extent.createOrUpdateFromCoordinate(coordinate),
+ resolution * this.renderBuffer_);
+ }
+
+ return this.replayHitDetection_(context,
+ coordinate, resolution, rotation, ol.render.webgl.HIT_DETECTION_SIZE_,
+ pixelRatio, opacity, skippedFeaturesHash,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ var imageData = new Uint8Array(4);
+ gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, imageData);
+
+ if (imageData[3] > 0) {
+ var result = callback(feature);
+ if (result) {
+ return result;
+ }
+ }
+ }, true, hitExtent);
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} opacity Global opacity.
+ * @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
+ * to skip.
+ * @return {boolean} Is there a feature at the given coordinate?
+ */
+ol.render.webgl.ReplayGroup.prototype.hasFeatureAtCoordinate = function(
+ coordinate, context, center, resolution, rotation, size, pixelRatio,
+ opacity, skippedFeaturesHash) {
+ var gl = context.getGL();
+ gl.bindFramebuffer(
+ gl.FRAMEBUFFER, context.getHitDetectionFramebuffer());
+
+ var hasFeature = this.replayHitDetection_(context,
+ coordinate, resolution, rotation, ol.render.webgl.HIT_DETECTION_SIZE_,
+ pixelRatio, opacity, skippedFeaturesHash,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {boolean} Is there a feature?
+ */
+ function(feature) {
+ var imageData = new Uint8Array(4);
+ gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, imageData);
+ return imageData[3] > 0;
+ }, false);
+
+ return hasFeature !== undefined;
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<ol.render.ReplayType,
+ * function(new: ol.render.webgl.ImageReplay, number,
+ * ol.Extent)>}
+ */
+ol.render.webgl.BATCH_CONSTRUCTORS_ = {
+ 'Image': ol.render.webgl.ImageReplay
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<number>}
+ */
+ol.render.webgl.HIT_DETECTION_SIZE_ = [1, 1];
+
+goog.provide('ol.render.webgl.Immediate');
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.render.VectorContext');
+goog.require('ol.render.webgl.ImageReplay');
+goog.require('ol.render.webgl.ReplayGroup');
+
+
+/**
+ * @constructor
+ * @extends {ol.render.VectorContext}
+ * @param {ol.webgl.Context} context Context.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} rotation Rotation.
+ * @param {ol.Size} size Size.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} pixelRatio Pixel ratio.
+ * @struct
+ */
+ol.render.webgl.Immediate = function(context, center, resolution, rotation, size, extent, pixelRatio) {
+ ol.render.VectorContext.call(this);
+
+ /**
+ * @private
+ */
+ this.context_ = context;
+
+ /**
+ * @private
+ */
+ this.center_ = center;
+
+ /**
+ * @private
+ */
+ this.extent_ = extent;
+
+ /**
+ * @private
+ */
+ this.pixelRatio_ = pixelRatio;
+
+ /**
+ * @private
+ */
+ this.size_ = size;
+
+ /**
+ * @private
+ */
+ this.rotation_ = rotation;
+
+ /**
+ * @private
+ */
+ this.resolution_ = resolution;
+
+ /**
+ * @private
+ * @type {ol.style.Image}
+ */
+ this.imageStyle_ = null;
+
+};
+ol.inherits(ol.render.webgl.Immediate, ol.render.VectorContext);
+
+
+/**
+ * Set the rendering style. Note that since this is an immediate rendering API,
+ * any `zIndex` on the provided style will be ignored.
+ *
+ * @param {ol.style.Style} style The rendering style.
+ * @api
+ */
+ol.render.webgl.Immediate.prototype.setStyle = function(style) {
+ this.setImageStyle(style.getImage());
+};
+
+
+/**
+ * Render a geometry into the canvas. Call
+ * {@link ol.render.webgl.Immediate#setStyle} first to set the rendering style.
+ *
+ * @param {ol.geom.Geometry|ol.render.Feature} geometry The geometry to render.
+ * @api
+ */
+ol.render.webgl.Immediate.prototype.drawGeometry = function(geometry) {
+ var type = geometry.getType();
+ switch (type) {
+ case ol.geom.GeometryType.POINT:
+ this.drawPoint(/** @type {ol.geom.Point} */ (geometry), null);
+ break;
+ case ol.geom.GeometryType.MULTI_POINT:
+ this.drawMultiPoint(/** @type {ol.geom.MultiPoint} */ (geometry), null);
+ break;
+ case ol.geom.GeometryType.GEOMETRY_COLLECTION:
+ this.drawGeometryCollection(/** @type {ol.geom.GeometryCollection} */ (geometry), null);
+ break;
+ default:
+ goog.asserts.fail('Unsupported geometry type: ' + type);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.render.webgl.Immediate.prototype.drawFeature = function(feature, style) {
+ var geometry = style.getGeometryFunction()(feature);
+ if (!geometry ||
+ !ol.extent.intersects(this.extent_, geometry.getExtent())) {
+ return;
+ }
+ this.setStyle(style);
+ goog.asserts.assert(geometry, 'geometry must be truthy');
+ this.drawGeometry(geometry);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.Immediate.prototype.drawGeometryCollection = function(geometry, data) {
+ var geometries = geometry.getGeometriesArray();
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ this.drawGeometry(geometries[i]);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.Immediate.prototype.drawPoint = function(geometry, data) {
+ var context = this.context_;
+ var replayGroup = new ol.render.webgl.ReplayGroup(1, this.extent_);
+ var replay = /** @type {ol.render.webgl.ImageReplay} */ (
+ replayGroup.getReplay(0, ol.render.ReplayType.IMAGE));
+ replay.setImageStyle(this.imageStyle_);
+ replay.drawPoint(geometry, data);
+ replay.finish(context);
+ // default colors
+ var opacity = 1;
+ var skippedFeatures = {};
+ var featureCallback;
+ var oneByOne = false;
+ replay.replay(this.context_, this.center_, this.resolution_, this.rotation_,
+ this.size_, this.pixelRatio_, opacity, skippedFeatures, featureCallback,
+ oneByOne);
+ replay.getDeleteResourcesFunction(context)();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.Immediate.prototype.drawMultiPoint = function(geometry, data) {
+ var context = this.context_;
+ var replayGroup = new ol.render.webgl.ReplayGroup(1, this.extent_);
+ var replay = /** @type {ol.render.webgl.ImageReplay} */ (
+ replayGroup.getReplay(0, ol.render.ReplayType.IMAGE));
+ replay.setImageStyle(this.imageStyle_);
+ replay.drawMultiPoint(geometry, data);
+ replay.finish(context);
+ var opacity = 1;
+ var skippedFeatures = {};
+ var featureCallback;
+ var oneByOne = false;
+ replay.replay(this.context_, this.center_, this.resolution_, this.rotation_,
+ this.size_, this.pixelRatio_, opacity, skippedFeatures, featureCallback,
+ oneByOne);
+ replay.getDeleteResourcesFunction(context)();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.render.webgl.Immediate.prototype.setImageStyle = function(imageStyle) {
+ this.imageStyle_ = imageStyle;
+};
+
+// This file is automatically generated, do not edit
+goog.provide('ol.renderer.webgl.map.shader.Default');
+goog.provide('ol.renderer.webgl.map.shader.Default.Locations');
+goog.provide('ol.renderer.webgl.map.shader.DefaultFragment');
+goog.provide('ol.renderer.webgl.map.shader.DefaultVertex');
+
+goog.require('ol.webgl.shader');
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Fragment}
+ * @struct
+ */
+ol.renderer.webgl.map.shader.DefaultFragment = function() {
+ ol.webgl.shader.Fragment.call(this, ol.renderer.webgl.map.shader.DefaultFragment.SOURCE);
+};
+ol.inherits(ol.renderer.webgl.map.shader.DefaultFragment, ol.webgl.shader.Fragment);
+goog.addSingletonGetter(ol.renderer.webgl.map.shader.DefaultFragment);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultFragment.DEBUG_SOURCE = 'precision mediump float;\nvarying vec2 v_texCoord;\n\n\nuniform float u_opacity;\nuniform sampler2D u_texture;\n\nvoid main(void) {\n vec4 texColor = texture2D(u_texture, v_texCoord);\n gl_FragColor.rgb = texColor.rgb;\n gl_FragColor.a = texColor.a * u_opacity;\n}\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultFragment.OPTIMIZED_SOURCE = 'precision mediump float;varying vec2 a;uniform float f;uniform sampler2D g;void main(void){vec4 texColor=texture2D(g,a);gl_FragColor.rgb=texColor.rgb;gl_FragColor.a=texColor.a*f;}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultFragment.SOURCE = goog.DEBUG ?
+ ol.renderer.webgl.map.shader.DefaultFragment.DEBUG_SOURCE :
+ ol.renderer.webgl.map.shader.DefaultFragment.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Vertex}
+ * @struct
+ */
+ol.renderer.webgl.map.shader.DefaultVertex = function() {
+ ol.webgl.shader.Vertex.call(this, ol.renderer.webgl.map.shader.DefaultVertex.SOURCE);
+};
+ol.inherits(ol.renderer.webgl.map.shader.DefaultVertex, ol.webgl.shader.Vertex);
+goog.addSingletonGetter(ol.renderer.webgl.map.shader.DefaultVertex);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultVertex.DEBUG_SOURCE = 'varying vec2 v_texCoord;\n\n\nattribute vec2 a_position;\nattribute vec2 a_texCoord;\n\nuniform mat4 u_texCoordMatrix;\nuniform mat4 u_projectionMatrix;\n\nvoid main(void) {\n gl_Position = u_projectionMatrix * vec4(a_position, 0., 1.);\n v_texCoord = (u_texCoordMatrix * vec4(a_texCoord, 0., 1.)).st;\n}\n\n\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultVertex.OPTIMIZED_SOURCE = 'varying vec2 a;attribute vec2 b;attribute vec2 c;uniform mat4 d;uniform mat4 e;void main(void){gl_Position=e*vec4(b,0.,1.);a=(d*vec4(c,0.,1.)).st;}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.map.shader.DefaultVertex.SOURCE = goog.DEBUG ?
+ ol.renderer.webgl.map.shader.DefaultVertex.DEBUG_SOURCE :
+ ol.renderer.webgl.map.shader.DefaultVertex.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @param {WebGLRenderingContext} gl GL.
+ * @param {WebGLProgram} program Program.
+ * @struct
+ */
+ol.renderer.webgl.map.shader.Default.Locations = function(gl, program) {
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_opacity = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_opacity' : 'f');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_projectionMatrix = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_projectionMatrix' : 'e');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_texCoordMatrix = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_texCoordMatrix' : 'd');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_texture = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_texture' : 'g');
+
+ /**
+ * @type {number}
+ */
+ this.a_position = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_position' : 'b');
+
+ /**
+ * @type {number}
+ */
+ this.a_texCoord = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_texCoord' : 'c');
+};
+
+goog.provide('ol.renderer.webgl.Layer');
+
+goog.require('goog.vec.Mat4');
+goog.require('goog.webgl');
+goog.require('ol.layer.Layer');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.webgl.Immediate');
+goog.require('ol.renderer.Layer');
+goog.require('ol.renderer.webgl.map.shader.Default');
+goog.require('ol.renderer.webgl.map.shader.Default.Locations');
+goog.require('ol.renderer.webgl.map.shader.DefaultFragment');
+goog.require('ol.renderer.webgl.map.shader.DefaultVertex');
+goog.require('ol.webgl.Buffer');
+goog.require('ol.webgl.Context');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Layer}
+ * @param {ol.renderer.webgl.Map} mapRenderer Map renderer.
+ * @param {ol.layer.Layer} layer Layer.
+ */
+ol.renderer.webgl.Layer = function(mapRenderer, layer) {
+
+ ol.renderer.Layer.call(this, layer);
+
+ /**
+ * @protected
+ * @type {ol.renderer.webgl.Map}
+ */
+ this.mapRenderer = mapRenderer;
+
+ /**
+ * @private
+ * @type {ol.webgl.Buffer}
+ */
+ this.arrayBuffer_ = new ol.webgl.Buffer([
+ -1, -1, 0, 0,
+ 1, -1, 1, 0,
+ -1, 1, 0, 1,
+ 1, 1, 1, 1
+ ]);
+
+ /**
+ * @protected
+ * @type {WebGLTexture}
+ */
+ this.texture = null;
+
+ /**
+ * @protected
+ * @type {WebGLFramebuffer}
+ */
+ this.framebuffer = null;
+
+ /**
+ * @protected
+ * @type {number|undefined}
+ */
+ this.framebufferDimension = undefined;
+
+ /**
+ * @protected
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.texCoordMatrix = goog.vec.Mat4.createNumber();
+
+ /**
+ * @protected
+ * @type {!goog.vec.Mat4.Number}
+ */
+ this.projectionMatrix = goog.vec.Mat4.createNumberIdentity();
+
+ /**
+ * @private
+ * @type {ol.renderer.webgl.map.shader.Default.Locations}
+ */
+ this.defaultLocations_ = null;
+
+};
+ol.inherits(ol.renderer.webgl.Layer, ol.renderer.Layer);
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {number} framebufferDimension Framebuffer dimension.
+ * @protected
+ */
+ol.renderer.webgl.Layer.prototype.bindFramebuffer = function(frameState, framebufferDimension) {
+
+ var gl = this.mapRenderer.getGL();
+
+ if (this.framebufferDimension === undefined ||
+ this.framebufferDimension != framebufferDimension) {
+ /**
+ * @param {WebGLRenderingContext} gl GL.
+ * @param {WebGLFramebuffer} framebuffer Framebuffer.
+ * @param {WebGLTexture} texture Texture.
+ */
+ var postRenderFunction = function(gl, framebuffer, texture) {
+ if (!gl.isContextLost()) {
+ gl.deleteFramebuffer(framebuffer);
+ gl.deleteTexture(texture);
+ }
+ }.bind(null, gl, this.framebuffer, this.texture);
+
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (postRenderFunction)
+ );
+
+ var texture = ol.webgl.Context.createEmptyTexture(
+ gl, framebufferDimension, framebufferDimension);
+
+ var framebuffer = gl.createFramebuffer();
+ gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, framebuffer);
+ gl.framebufferTexture2D(goog.webgl.FRAMEBUFFER,
+ goog.webgl.COLOR_ATTACHMENT0, goog.webgl.TEXTURE_2D, texture, 0);
+
+ this.texture = texture;
+ this.framebuffer = framebuffer;
+ this.framebufferDimension = framebufferDimension;
+
+ } else {
+ gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, this.framebuffer);
+ }
+
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @param {ol.webgl.Context} context Context.
+ */
+ol.renderer.webgl.Layer.prototype.composeFrame = function(frameState, layerState, context) {
+
+ this.dispatchComposeEvent_(
+ ol.render.EventType.PRECOMPOSE, context, frameState);
+
+ context.bindBuffer(goog.webgl.ARRAY_BUFFER, this.arrayBuffer_);
+
+ var gl = context.getGL();
+
+ var fragmentShader =
+ ol.renderer.webgl.map.shader.DefaultFragment.getInstance();
+ var vertexShader = ol.renderer.webgl.map.shader.DefaultVertex.getInstance();
+
+ var program = context.getProgram(fragmentShader, vertexShader);
+
+ var locations;
+ if (!this.defaultLocations_) {
+ locations =
+ new ol.renderer.webgl.map.shader.Default.Locations(gl, program);
+ this.defaultLocations_ = locations;
+ } else {
+ locations = this.defaultLocations_;
+ }
+
+ if (context.useProgram(program)) {
+ gl.enableVertexAttribArray(locations.a_position);
+ gl.vertexAttribPointer(
+ locations.a_position, 2, goog.webgl.FLOAT, false, 16, 0);
+ gl.enableVertexAttribArray(locations.a_texCoord);
+ gl.vertexAttribPointer(
+ locations.a_texCoord, 2, goog.webgl.FLOAT, false, 16, 8);
+ gl.uniform1i(locations.u_texture, 0);
+ }
+
+ gl.uniformMatrix4fv(
+ locations.u_texCoordMatrix, false, this.getTexCoordMatrix());
+ gl.uniformMatrix4fv(locations.u_projectionMatrix, false,
+ this.getProjectionMatrix());
+ gl.uniform1f(locations.u_opacity, layerState.opacity);
+ gl.bindTexture(goog.webgl.TEXTURE_2D, this.getTexture());
+ gl.drawArrays(goog.webgl.TRIANGLE_STRIP, 0, 4);
+
+ this.dispatchComposeEvent_(
+ ol.render.EventType.POSTCOMPOSE, context, frameState);
+
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {ol.webgl.Context} context WebGL context.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.webgl.Layer.prototype.dispatchComposeEvent_ = function(type, context, frameState) {
+ var layer = this.getLayer();
+ if (layer.hasListener(type)) {
+ var viewState = frameState.viewState;
+ var resolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var extent = frameState.extent;
+ var center = viewState.center;
+ var rotation = viewState.rotation;
+ var size = frameState.size;
+
+ var render = new ol.render.webgl.Immediate(
+ context, center, resolution, rotation, size, extent, pixelRatio);
+ var composeEvent = new ol.render.Event(
+ type, layer, render, frameState, null, context);
+ layer.dispatchEvent(composeEvent);
+ }
+};
+
+
+/**
+ * @return {!goog.vec.Mat4.Number} Matrix.
+ */
+ol.renderer.webgl.Layer.prototype.getTexCoordMatrix = function() {
+ return this.texCoordMatrix;
+};
+
+
+/**
+ * @return {WebGLTexture} Texture.
+ */
+ol.renderer.webgl.Layer.prototype.getTexture = function() {
+ return this.texture;
+};
+
+
+/**
+ * @return {!goog.vec.Mat4.Number} Matrix.
+ */
+ol.renderer.webgl.Layer.prototype.getProjectionMatrix = function() {
+ return this.projectionMatrix;
+};
+
+
+/**
+ * Handle webglcontextlost.
+ */
+ol.renderer.webgl.Layer.prototype.handleWebGLContextLost = function() {
+ this.texture = null;
+ this.framebuffer = null;
+ this.framebufferDimension = undefined;
+};
+
+
+/**
+ * @param {olx.FrameState} frameState Frame state.
+ * @param {ol.LayerState} layerState Layer state.
+ * @param {ol.webgl.Context} context Context.
+ * @return {boolean} whether composeFrame should be called.
+ */
+ol.renderer.webgl.Layer.prototype.prepareFrame = goog.abstractMethod;
+
+goog.provide('ol.renderer.webgl.ImageLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('goog.webgl');
+goog.require('ol.ImageBase');
+goog.require('ol.ViewHint');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.functions');
+goog.require('ol.layer.Image');
+goog.require('ol.proj');
+goog.require('ol.renderer.webgl.Layer');
+goog.require('ol.source.ImageVector');
+goog.require('ol.vec.Mat4');
+goog.require('ol.webgl.Context');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.webgl.Layer}
+ * @param {ol.renderer.webgl.Map} mapRenderer Map renderer.
+ * @param {ol.layer.Image} imageLayer Tile layer.
+ */
+ol.renderer.webgl.ImageLayer = function(mapRenderer, imageLayer) {
+
+ ol.renderer.webgl.Layer.call(this, mapRenderer, imageLayer);
+
+ /**
+ * The last rendered image.
+ * @private
+ * @type {?ol.ImageBase}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.hitCanvasContext_ = null;
+
+ /**
+ * @private
+ * @type {?goog.vec.Mat4.Number}
+ */
+ this.hitTransformationMatrix_ = null;
+
+};
+ol.inherits(ol.renderer.webgl.ImageLayer, ol.renderer.webgl.Layer);
+
+
+/**
+ * @param {ol.ImageBase} image Image.
+ * @private
+ * @return {WebGLTexture} Texture.
+ */
+ol.renderer.webgl.ImageLayer.prototype.createTexture_ = function(image) {
+
+ // We meet the conditions to work with non-power of two textures.
+ // http://www.khronos.org/webgl/wiki/WebGL_and_OpenGL_Differences#Non-Power_of_Two_Texture_Support
+ // http://learningwebgl.com/blog/?p=2101
+
+ var imageElement = image.getImage();
+ var gl = this.mapRenderer.getGL();
+
+ return ol.webgl.Context.createTexture(
+ gl, imageElement, goog.webgl.CLAMP_TO_EDGE, goog.webgl.CLAMP_TO_EDGE);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.ImageLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ var layer = this.getLayer();
+ var source = layer.getSource();
+ var resolution = frameState.viewState.resolution;
+ var rotation = frameState.viewState.rotation;
+ var skippedFeatureUids = frameState.skippedFeatureUids;
+ return source.forEachFeatureAtCoordinate(
+ coordinate, resolution, rotation, skippedFeatureUids,
+
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ return callback.call(thisArg, feature, layer);
+ });
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.ImageLayer.prototype.prepareFrame = function(frameState, layerState, context) {
+
+ var gl = this.mapRenderer.getGL();
+
+ var pixelRatio = frameState.pixelRatio;
+ var viewState = frameState.viewState;
+ var viewCenter = viewState.center;
+ var viewResolution = viewState.resolution;
+ var viewRotation = viewState.rotation;
+
+ var image = this.image_;
+ var texture = this.texture;
+ var imageLayer = this.getLayer();
+ goog.asserts.assertInstanceof(imageLayer, ol.layer.Image,
+ 'layer is an instance of ol.layer.Image');
+ var imageSource = imageLayer.getSource();
+
+ var hints = frameState.viewHints;
+
+ var renderedExtent = frameState.extent;
+ if (layerState.extent !== undefined) {
+ renderedExtent = ol.extent.getIntersection(
+ renderedExtent, layerState.extent);
+ }
+ if (!hints[ol.ViewHint.ANIMATING] && !hints[ol.ViewHint.INTERACTING] &&
+ !ol.extent.isEmpty(renderedExtent)) {
+ var projection = viewState.projection;
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ var sourceProjection = imageSource.getProjection();
+ if (sourceProjection) {
+ goog.asserts.assert(ol.proj.equivalent(projection, sourceProjection),
+ 'projection and sourceProjection are equivalent');
+ projection = sourceProjection;
+ }
+ }
+ var image_ = imageSource.getImage(renderedExtent, viewResolution,
+ pixelRatio, projection);
+ if (image_) {
+ var loaded = this.loadImage(image_);
+ if (loaded) {
+ image = image_;
+ texture = this.createTexture_(image_);
+ if (this.texture) {
+ /**
+ * @param {WebGLRenderingContext} gl GL.
+ * @param {WebGLTexture} texture Texture.
+ */
+ var postRenderFunction = function(gl, texture) {
+ if (!gl.isContextLost()) {
+ gl.deleteTexture(texture);
+ }
+ }.bind(null, gl, this.texture);
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (postRenderFunction)
+ );
+ }
+ }
+ }
+ }
+
+ if (image) {
+ goog.asserts.assert(texture, 'texture is truthy');
+
+ var canvas = this.mapRenderer.getContext().getCanvas();
+
+ this.updateProjectionMatrix_(canvas.width, canvas.height,
+ pixelRatio, viewCenter, viewResolution, viewRotation,
+ image.getExtent());
+ this.hitTransformationMatrix_ = null;
+
+ // Translate and scale to flip the Y coord.
+ var texCoordMatrix = this.texCoordMatrix;
+ goog.vec.Mat4.makeIdentity(texCoordMatrix);
+ goog.vec.Mat4.scale(texCoordMatrix, 1, -1, 1);
+ goog.vec.Mat4.translate(texCoordMatrix, 0, -1, 0);
+
+ this.image_ = image;
+ this.texture = texture;
+
+ this.updateAttributions(frameState.attributions, image.getAttributions());
+ this.updateLogos(frameState, imageSource);
+ }
+
+ return true;
+};
+
+
+/**
+ * @param {number} canvasWidth Canvas width.
+ * @param {number} canvasHeight Canvas height.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.Coordinate} viewCenter View center.
+ * @param {number} viewResolution View resolution.
+ * @param {number} viewRotation View rotation.
+ * @param {ol.Extent} imageExtent Image extent.
+ * @private
+ */
+ol.renderer.webgl.ImageLayer.prototype.updateProjectionMatrix_ = function(canvasWidth, canvasHeight, pixelRatio,
+ viewCenter, viewResolution, viewRotation, imageExtent) {
+
+ var canvasExtentWidth = canvasWidth * viewResolution;
+ var canvasExtentHeight = canvasHeight * viewResolution;
+
+ var projectionMatrix = this.projectionMatrix;
+ goog.vec.Mat4.makeIdentity(projectionMatrix);
+ goog.vec.Mat4.scale(projectionMatrix,
+ pixelRatio * 2 / canvasExtentWidth,
+ pixelRatio * 2 / canvasExtentHeight, 1);
+ goog.vec.Mat4.rotateZ(projectionMatrix, -viewRotation);
+ goog.vec.Mat4.translate(projectionMatrix,
+ imageExtent[0] - viewCenter[0],
+ imageExtent[1] - viewCenter[1],
+ 0);
+ goog.vec.Mat4.scale(projectionMatrix,
+ (imageExtent[2] - imageExtent[0]) / 2,
+ (imageExtent[3] - imageExtent[1]) / 2,
+ 1);
+ goog.vec.Mat4.translate(projectionMatrix, 1, 1, 0);
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.ImageLayer.prototype.hasFeatureAtCoordinate = function(coordinate, frameState) {
+ var hasFeature = this.forEachFeatureAtCoordinate(
+ coordinate, frameState, ol.functions.TRUE, this);
+ return hasFeature !== undefined;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.ImageLayer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
+ if (!this.image_ || !this.image_.getImage()) {
+ return undefined;
+ }
+
+ if (this.getLayer().getSource() instanceof ol.source.ImageVector) {
+ // for ImageVector sources use the original hit-detection logic,
+ // so that for example also transparent polygons are detected
+ var coordinate = pixel.slice();
+ ol.vec.Mat4.multVec2(
+ frameState.pixelToCoordinateMatrix, coordinate, coordinate);
+ var hasFeature = this.forEachFeatureAtCoordinate(
+ coordinate, frameState, ol.functions.TRUE, this);
+
+ if (hasFeature) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+ } else {
+ var imageSize =
+ [this.image_.getImage().width, this.image_.getImage().height];
+
+ if (!this.hitTransformationMatrix_) {
+ this.hitTransformationMatrix_ = this.getHitTransformationMatrix_(
+ frameState.size, imageSize);
+ }
+
+ var pixelOnFrameBuffer = [0, 0];
+ ol.vec.Mat4.multVec2(
+ this.hitTransformationMatrix_, pixel, pixelOnFrameBuffer);
+
+ if (pixelOnFrameBuffer[0] < 0 || pixelOnFrameBuffer[0] > imageSize[0] ||
+ pixelOnFrameBuffer[1] < 0 || pixelOnFrameBuffer[1] > imageSize[1]) {
+ // outside the image, no need to check
+ return undefined;
+ }
+
+ if (!this.hitCanvasContext_) {
+ this.hitCanvasContext_ = ol.dom.createCanvasContext2D(1, 1);
+ }
+
+ this.hitCanvasContext_.clearRect(0, 0, 1, 1);
+ this.hitCanvasContext_.drawImage(this.image_.getImage(),
+ pixelOnFrameBuffer[0], pixelOnFrameBuffer[1], 1, 1, 0, 0, 1, 1);
+
+ var imageData = this.hitCanvasContext_.getImageData(0, 0, 1, 1).data;
+ if (imageData[3] > 0) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+ }
+};
+
+
+/**
+ * The transformation matrix to get the pixel on the image for a
+ * pixel on the map.
+ * @param {ol.Size} mapSize The map size.
+ * @param {ol.Size} imageSize The image size.
+ * @return {goog.vec.Mat4.Number} The transformation matrix.
+ * @private
+ */
+ol.renderer.webgl.ImageLayer.prototype.getHitTransformationMatrix_ = function(mapSize, imageSize) {
+ // the first matrix takes a map pixel, flips the y-axis and scales to
+ // a range between -1 ... 1
+ var mapCoordMatrix = goog.vec.Mat4.createNumber();
+ goog.vec.Mat4.makeIdentity(mapCoordMatrix);
+ goog.vec.Mat4.translate(mapCoordMatrix, -1, -1, 0);
+ goog.vec.Mat4.scale(mapCoordMatrix, 2 / mapSize[0], 2 / mapSize[1], 1);
+ goog.vec.Mat4.translate(mapCoordMatrix, 0, mapSize[1], 0);
+ goog.vec.Mat4.scale(mapCoordMatrix, 1, -1, 1);
+
+ // the second matrix is the inverse of the projection matrix used in the
+ // shader for drawing
+ var projectionMatrixInv = goog.vec.Mat4.createNumber();
+ goog.vec.Mat4.invert(this.projectionMatrix, projectionMatrixInv);
+
+ // the third matrix scales to the image dimensions and flips the y-axis again
+ var imageCoordMatrix = goog.vec.Mat4.createNumber();
+ goog.vec.Mat4.makeIdentity(imageCoordMatrix);
+ goog.vec.Mat4.translate(imageCoordMatrix, 0, imageSize[1], 0);
+ goog.vec.Mat4.scale(imageCoordMatrix, 1, -1, 1);
+ goog.vec.Mat4.scale(imageCoordMatrix, imageSize[0] / 2, imageSize[1] / 2, 1);
+ goog.vec.Mat4.translate(imageCoordMatrix, 1, 1, 0);
+
+ var transformMatrix = goog.vec.Mat4.createNumber();
+ goog.vec.Mat4.multMat(
+ imageCoordMatrix, projectionMatrixInv, transformMatrix);
+ goog.vec.Mat4.multMat(
+ transformMatrix, mapCoordMatrix, transformMatrix);
+
+ return transformMatrix;
+};
+
+// This file is automatically generated, do not edit
+goog.provide('ol.renderer.webgl.tilelayer.shader');
+goog.provide('ol.renderer.webgl.tilelayer.shader.Locations');
+goog.provide('ol.renderer.webgl.tilelayer.shader.Fragment');
+goog.provide('ol.renderer.webgl.tilelayer.shader.Vertex');
+
+goog.require('ol.webgl.shader');
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Fragment}
+ * @struct
+ */
+ol.renderer.webgl.tilelayer.shader.Fragment = function() {
+ ol.webgl.shader.Fragment.call(this, ol.renderer.webgl.tilelayer.shader.Fragment.SOURCE);
+};
+ol.inherits(ol.renderer.webgl.tilelayer.shader.Fragment, ol.webgl.shader.Fragment);
+goog.addSingletonGetter(ol.renderer.webgl.tilelayer.shader.Fragment);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Fragment.DEBUG_SOURCE = 'precision mediump float;\nvarying vec2 v_texCoord;\n\n\nuniform sampler2D u_texture;\n\nvoid main(void) {\n gl_FragColor = texture2D(u_texture, v_texCoord);\n}\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Fragment.OPTIMIZED_SOURCE = 'precision mediump float;varying vec2 a;uniform sampler2D e;void main(void){gl_FragColor=texture2D(e,a);}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Fragment.SOURCE = goog.DEBUG ?
+ ol.renderer.webgl.tilelayer.shader.Fragment.DEBUG_SOURCE :
+ ol.renderer.webgl.tilelayer.shader.Fragment.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @extends {ol.webgl.shader.Vertex}
+ * @struct
+ */
+ol.renderer.webgl.tilelayer.shader.Vertex = function() {
+ ol.webgl.shader.Vertex.call(this, ol.renderer.webgl.tilelayer.shader.Vertex.SOURCE);
+};
+ol.inherits(ol.renderer.webgl.tilelayer.shader.Vertex, ol.webgl.shader.Vertex);
+goog.addSingletonGetter(ol.renderer.webgl.tilelayer.shader.Vertex);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Vertex.DEBUG_SOURCE = 'varying vec2 v_texCoord;\n\n\nattribute vec2 a_position;\nattribute vec2 a_texCoord;\nuniform vec4 u_tileOffset;\n\nvoid main(void) {\n gl_Position = vec4(a_position * u_tileOffset.xy + u_tileOffset.zw, 0., 1.);\n v_texCoord = a_texCoord;\n}\n\n\n';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Vertex.OPTIMIZED_SOURCE = 'varying vec2 a;attribute vec2 b;attribute vec2 c;uniform vec4 d;void main(void){gl_Position=vec4(b*d.xy+d.zw,0.,1.);a=c;}';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.renderer.webgl.tilelayer.shader.Vertex.SOURCE = goog.DEBUG ?
+ ol.renderer.webgl.tilelayer.shader.Vertex.DEBUG_SOURCE :
+ ol.renderer.webgl.tilelayer.shader.Vertex.OPTIMIZED_SOURCE;
+
+
+/**
+ * @constructor
+ * @param {WebGLRenderingContext} gl GL.
+ * @param {WebGLProgram} program Program.
+ * @struct
+ */
+ol.renderer.webgl.tilelayer.shader.Locations = function(gl, program) {
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_texture = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_texture' : 'e');
+
+ /**
+ * @type {WebGLUniformLocation}
+ */
+ this.u_tileOffset = gl.getUniformLocation(
+ program, goog.DEBUG ? 'u_tileOffset' : 'd');
+
+ /**
+ * @type {number}
+ */
+ this.a_position = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_position' : 'b');
+
+ /**
+ * @type {number}
+ */
+ this.a_texCoord = gl.getAttribLocation(
+ program, goog.DEBUG ? 'a_texCoord' : 'c');
+};
+
+// FIXME large resolutions lead to too large framebuffers :-(
+// FIXME animated shaders! check in redraw
+
+goog.provide('ol.renderer.webgl.TileLayer');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('goog.vec.Vec4');
+goog.require('goog.webgl');
+goog.require('ol.TileRange');
+goog.require('ol.TileState');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.layer.Tile');
+goog.require('ol.math');
+goog.require('ol.renderer.webgl.Layer');
+goog.require('ol.renderer.webgl.tilelayer.shader.Fragment');
+goog.require('ol.renderer.webgl.tilelayer.shader.Locations');
+goog.require('ol.renderer.webgl.tilelayer.shader.Vertex');
+goog.require('ol.size');
+goog.require('ol.vec.Mat4');
+goog.require('ol.webgl.Buffer');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.webgl.Layer}
+ * @param {ol.renderer.webgl.Map} mapRenderer Map renderer.
+ * @param {ol.layer.Tile} tileLayer Tile layer.
+ */
+ol.renderer.webgl.TileLayer = function(mapRenderer, tileLayer) {
+
+ ol.renderer.webgl.Layer.call(this, mapRenderer, tileLayer);
+
+ /**
+ * @private
+ * @type {ol.webgl.shader.Fragment}
+ */
+ this.fragmentShader_ =
+ ol.renderer.webgl.tilelayer.shader.Fragment.getInstance();
+
+ /**
+ * @private
+ * @type {ol.webgl.shader.Vertex}
+ */
+ this.vertexShader_ = ol.renderer.webgl.tilelayer.shader.Vertex.getInstance();
+
+ /**
+ * @private
+ * @type {ol.renderer.webgl.tilelayer.shader.Locations}
+ */
+ this.locations_ = null;
+
+ /**
+ * @private
+ * @type {ol.webgl.Buffer}
+ */
+ this.renderArrayBuffer_ = new ol.webgl.Buffer([
+ 0, 0, 0, 1,
+ 1, 0, 1, 1,
+ 0, 1, 0, 0,
+ 1, 1, 1, 0
+ ]);
+
+ /**
+ * @private
+ * @type {ol.TileRange}
+ */
+ this.renderedTileRange_ = null;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.renderedFramebufferExtent_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.tmpSize_ = [0, 0];
+
+};
+ol.inherits(ol.renderer.webgl.TileLayer, ol.renderer.webgl.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.TileLayer.prototype.disposeInternal = function() {
+ var context = this.mapRenderer.getContext();
+ context.deleteBuffer(this.renderArrayBuffer_);
+ ol.renderer.webgl.Layer.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Create a function that adds loaded tiles to the tile lookup.
+ * @param {ol.source.Tile} source Tile source.
+ * @param {ol.proj.Projection} projection Projection of the tiles.
+ * @param {Object.<number, Object.<string, ol.Tile>>} tiles Lookup of loaded
+ * tiles by zoom level.
+ * @return {function(number, ol.TileRange):boolean} A function that can be
+ * called with a zoom level and a tile range to add loaded tiles to the
+ * lookup.
+ * @protected
+ */
+ol.renderer.webgl.TileLayer.prototype.createLoadedTileFinder = function(source, projection, tiles) {
+ var mapRenderer = this.mapRenderer;
+
+ return (
+ /**
+ * @param {number} zoom Zoom level.
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} The tile range is fully loaded.
+ */
+ function(zoom, tileRange) {
+ function callback(tile) {
+ var loaded = mapRenderer.isTileTextureLoaded(tile);
+ if (loaded) {
+ if (!tiles[zoom]) {
+ tiles[zoom] = {};
+ }
+ tiles[zoom][tile.tileCoord.toString()] = tile;
+ }
+ return loaded;
+ }
+ return source.forEachLoadedTile(projection, zoom, tileRange, callback);
+ });
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.TileLayer.prototype.handleWebGLContextLost = function() {
+ ol.renderer.webgl.Layer.prototype.handleWebGLContextLost.call(this);
+ this.locations_ = null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.TileLayer.prototype.prepareFrame = function(frameState, layerState, context) {
+
+ var mapRenderer = this.mapRenderer;
+ var gl = context.getGL();
+
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+
+ var tileLayer = this.getLayer();
+ goog.asserts.assertInstanceof(tileLayer, ol.layer.Tile,
+ 'layer is an instance of ol.layer.Tile');
+ var tileSource = tileLayer.getSource();
+ var tileGrid = tileSource.getTileGridForProjection(projection);
+ var z = tileGrid.getZForResolution(viewState.resolution);
+ var tileResolution = tileGrid.getResolution(z);
+
+ var tilePixelSize =
+ tileSource.getTilePixelSize(z, frameState.pixelRatio, projection);
+ var pixelRatio = tilePixelSize[0] /
+ ol.size.toSize(tileGrid.getTileSize(z), this.tmpSize_)[0];
+ var tilePixelResolution = tileResolution / pixelRatio;
+ var tileGutter = tileSource.getGutter(projection);
+
+ var center = viewState.center;
+ var extent;
+ if (tileResolution == viewState.resolution) {
+ center = this.snapCenterToPixel(center, tileResolution, frameState.size);
+ extent = ol.extent.getForViewAndSize(
+ center, tileResolution, viewState.rotation, frameState.size);
+ } else {
+ extent = frameState.extent;
+ }
+ var tileRange = tileGrid.getTileRangeForExtentAndResolution(
+ extent, tileResolution);
+
+ var framebufferExtent;
+ if (this.renderedTileRange_ &&
+ this.renderedTileRange_.equals(tileRange) &&
+ this.renderedRevision_ == tileSource.getRevision()) {
+ framebufferExtent = this.renderedFramebufferExtent_;
+ } else {
+
+ var tileRangeSize = tileRange.getSize();
+
+ var maxDimension = Math.max(
+ tileRangeSize[0] * tilePixelSize[0],
+ tileRangeSize[1] * tilePixelSize[1]);
+ var framebufferDimension = ol.math.roundUpToPowerOfTwo(maxDimension);
+ var framebufferExtentDimension = tilePixelResolution * framebufferDimension;
+ var origin = tileGrid.getOrigin(z);
+ var minX = origin[0] +
+ tileRange.minX * tilePixelSize[0] * tilePixelResolution;
+ var minY = origin[1] +
+ tileRange.minY * tilePixelSize[1] * tilePixelResolution;
+ framebufferExtent = [
+ minX, minY,
+ minX + framebufferExtentDimension, minY + framebufferExtentDimension
+ ];
+
+ this.bindFramebuffer(frameState, framebufferDimension);
+ gl.viewport(0, 0, framebufferDimension, framebufferDimension);
+
+ gl.clearColor(0, 0, 0, 0);
+ gl.clear(goog.webgl.COLOR_BUFFER_BIT);
+ gl.disable(goog.webgl.BLEND);
+
+ var program = context.getProgram(this.fragmentShader_, this.vertexShader_);
+ context.useProgram(program);
+ if (!this.locations_) {
+ this.locations_ =
+ new ol.renderer.webgl.tilelayer.shader.Locations(gl, program);
+ }
+
+ context.bindBuffer(goog.webgl.ARRAY_BUFFER, this.renderArrayBuffer_);
+ gl.enableVertexAttribArray(this.locations_.a_position);
+ gl.vertexAttribPointer(
+ this.locations_.a_position, 2, goog.webgl.FLOAT, false, 16, 0);
+ gl.enableVertexAttribArray(this.locations_.a_texCoord);
+ gl.vertexAttribPointer(
+ this.locations_.a_texCoord, 2, goog.webgl.FLOAT, false, 16, 8);
+ gl.uniform1i(this.locations_.u_texture, 0);
+
+ /**
+ * @type {Object.<number, Object.<string, ol.Tile>>}
+ */
+ var tilesToDrawByZ = {};
+ tilesToDrawByZ[z] = {};
+
+ var findLoadedTiles = this.createLoadedTileFinder(
+ tileSource, projection, tilesToDrawByZ);
+
+ var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
+ var allTilesLoaded = true;
+ var tmpExtent = ol.extent.createEmpty();
+ var tmpTileRange = new ol.TileRange(0, 0, 0, 0);
+ var childTileRange, drawable, fullyLoaded, tile, tileState;
+ var x, y, tileExtent;
+ for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
+ for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
+
+ tile = tileSource.getTile(z, x, y, pixelRatio, projection);
+ if (layerState.extent !== undefined) {
+ // ignore tiles outside layer extent
+ tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
+ if (!ol.extent.intersects(tileExtent, layerState.extent)) {
+ continue;
+ }
+ }
+ tileState = tile.getState();
+ drawable = tileState == ol.TileState.LOADED ||
+ tileState == ol.TileState.EMPTY ||
+ tileState == ol.TileState.ERROR && !useInterimTilesOnError;
+ if (!drawable && tile.interimTile) {
+ tile = tile.interimTile;
+ }
+ goog.asserts.assert(tile);
+ tileState = tile.getState();
+ if (tileState == ol.TileState.LOADED) {
+ if (mapRenderer.isTileTextureLoaded(tile)) {
+ tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
+ continue;
+ }
+ } else if (tileState == ol.TileState.EMPTY ||
+ (tileState == ol.TileState.ERROR &&
+ !useInterimTilesOnError)) {
+ continue;
+ }
+
+ allTilesLoaded = false;
+ fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
+ tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
+ if (!fullyLoaded) {
+ childTileRange = tileGrid.getTileCoordChildTileRange(
+ tile.tileCoord, tmpTileRange, tmpExtent);
+ if (childTileRange) {
+ findLoadedTiles(z + 1, childTileRange);
+ }
+ }
+
+ }
+
+ }
+
+ /** @type {Array.<number>} */
+ var zs = Object.keys(tilesToDrawByZ).map(Number);
+ zs.sort(ol.array.numberSafeCompareFunction);
+ var u_tileOffset = goog.vec.Vec4.createFloat32();
+ var i, ii, sx, sy, tileKey, tilesToDraw, tx, ty;
+ for (i = 0, ii = zs.length; i < ii; ++i) {
+ tilesToDraw = tilesToDrawByZ[zs[i]];
+ for (tileKey in tilesToDraw) {
+ tile = tilesToDraw[tileKey];
+ tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
+ sx = 2 * (tileExtent[2] - tileExtent[0]) /
+ framebufferExtentDimension;
+ sy = 2 * (tileExtent[3] - tileExtent[1]) /
+ framebufferExtentDimension;
+ tx = 2 * (tileExtent[0] - framebufferExtent[0]) /
+ framebufferExtentDimension - 1;
+ ty = 2 * (tileExtent[1] - framebufferExtent[1]) /
+ framebufferExtentDimension - 1;
+ goog.vec.Vec4.setFromValues(u_tileOffset, sx, sy, tx, ty);
+ gl.uniform4fv(this.locations_.u_tileOffset, u_tileOffset);
+ mapRenderer.bindTileTexture(tile, tilePixelSize,
+ tileGutter * pixelRatio, goog.webgl.LINEAR, goog.webgl.LINEAR);
+ gl.drawArrays(goog.webgl.TRIANGLE_STRIP, 0, 4);
+ }
+ }
+
+ if (allTilesLoaded) {
+ this.renderedTileRange_ = tileRange;
+ this.renderedFramebufferExtent_ = framebufferExtent;
+ this.renderedRevision_ = tileSource.getRevision();
+ } else {
+ this.renderedTileRange_ = null;
+ this.renderedFramebufferExtent_ = null;
+ this.renderedRevision_ = -1;
+ frameState.animate = true;
+ }
+
+ }
+
+ this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
+ var tileTextureQueue = mapRenderer.getTileTextureQueue();
+ this.manageTilePyramid(
+ frameState, tileSource, tileGrid, pixelRatio, projection, extent, z,
+ tileLayer.getPreload(),
+ /**
+ * @param {ol.Tile} tile Tile.
+ */
+ function(tile) {
+ if (tile.getState() == ol.TileState.LOADED &&
+ !mapRenderer.isTileTextureLoaded(tile) &&
+ !tileTextureQueue.isKeyQueued(tile.getKey())) {
+ tileTextureQueue.enqueue([
+ tile,
+ tileGrid.getTileCoordCenter(tile.tileCoord),
+ tileGrid.getResolution(tile.tileCoord[0]),
+ tilePixelSize, tileGutter * pixelRatio
+ ]);
+ }
+ }, this);
+ this.scheduleExpireCache(frameState, tileSource);
+ this.updateLogos(frameState, tileSource);
+
+ var texCoordMatrix = this.texCoordMatrix;
+ goog.vec.Mat4.makeIdentity(texCoordMatrix);
+ goog.vec.Mat4.translate(texCoordMatrix,
+ (center[0] - framebufferExtent[0]) /
+ (framebufferExtent[2] - framebufferExtent[0]),
+ (center[1] - framebufferExtent[1]) /
+ (framebufferExtent[3] - framebufferExtent[1]),
+ 0);
+ if (viewState.rotation !== 0) {
+ goog.vec.Mat4.rotateZ(texCoordMatrix, viewState.rotation);
+ }
+ goog.vec.Mat4.scale(texCoordMatrix,
+ frameState.size[0] * viewState.resolution /
+ (framebufferExtent[2] - framebufferExtent[0]),
+ frameState.size[1] * viewState.resolution /
+ (framebufferExtent[3] - framebufferExtent[1]),
+ 1);
+ goog.vec.Mat4.translate(texCoordMatrix,
+ -0.5,
+ -0.5,
+ 0);
+
+ return true;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.TileLayer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
+ if (!this.framebuffer) {
+ return undefined;
+ }
+
+ var pixelOnMapScaled = [
+ pixel[0] / frameState.size[0],
+ (frameState.size[1] - pixel[1]) / frameState.size[1]];
+
+ var pixelOnFrameBufferScaled = [0, 0];
+ ol.vec.Mat4.multVec2(
+ this.texCoordMatrix, pixelOnMapScaled, pixelOnFrameBufferScaled);
+ var pixelOnFrameBuffer = [
+ pixelOnFrameBufferScaled[0] * this.framebufferDimension,
+ pixelOnFrameBufferScaled[1] * this.framebufferDimension];
+
+ var gl = this.mapRenderer.getContext().getGL();
+ gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer);
+ var imageData = new Uint8Array(4);
+ gl.readPixels(pixelOnFrameBuffer[0], pixelOnFrameBuffer[1], 1, 1,
+ gl.RGBA, gl.UNSIGNED_BYTE, imageData);
+
+ if (imageData[3] > 0) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+};
+
+goog.provide('ol.renderer.webgl.VectorLayer');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.ViewHint');
+goog.require('ol.extent');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.webgl.ReplayGroup');
+goog.require('ol.renderer.vector');
+goog.require('ol.renderer.webgl.Layer');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.webgl.Layer}
+ * @param {ol.renderer.webgl.Map} mapRenderer Map renderer.
+ * @param {ol.layer.Vector} vectorLayer Vector layer.
+ */
+ol.renderer.webgl.VectorLayer = function(mapRenderer, vectorLayer) {
+
+ ol.renderer.webgl.Layer.call(this, mapRenderer, vectorLayer);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.dirty_ = false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedResolution_ = NaN;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.renderedExtent_ = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {function(ol.Feature, ol.Feature): number|null}
+ */
+ this.renderedRenderOrder_ = null;
+
+ /**
+ * @private
+ * @type {ol.render.webgl.ReplayGroup}
+ */
+ this.replayGroup_ = null;
+
+ /**
+ * The last layer state.
+ * @private
+ * @type {?ol.LayerState}
+ */
+ this.layerState_ = null;
+
+};
+ol.inherits(ol.renderer.webgl.VectorLayer, ol.renderer.webgl.Layer);
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.composeFrame = function(frameState, layerState, context) {
+ this.layerState_ = layerState;
+ var viewState = frameState.viewState;
+ var replayGroup = this.replayGroup_;
+ if (replayGroup && !replayGroup.isEmpty()) {
+ replayGroup.replay(context,
+ viewState.center, viewState.resolution, viewState.rotation,
+ frameState.size, frameState.pixelRatio, layerState.opacity,
+ layerState.managed ? frameState.skippedFeatureUids : {});
+ }
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.disposeInternal = function() {
+ var replayGroup = this.replayGroup_;
+ if (replayGroup) {
+ var context = this.mapRenderer.getContext();
+ replayGroup.getDeleteResourcesFunction(context)();
+ this.replayGroup_ = null;
+ }
+ ol.renderer.webgl.Layer.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) {
+ if (!this.replayGroup_ || !this.layerState_) {
+ return undefined;
+ } else {
+ var context = this.mapRenderer.getContext();
+ var viewState = frameState.viewState;
+ var layer = this.getLayer();
+ var layerState = this.layerState_;
+ /** @type {Object.<string, boolean>} */
+ var features = {};
+ return this.replayGroup_.forEachFeatureAtCoordinate(coordinate,
+ context, viewState.center, viewState.resolution, viewState.rotation,
+ frameState.size, frameState.pixelRatio, layerState.opacity,
+ {},
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @return {?} Callback result.
+ */
+ function(feature) {
+ goog.asserts.assert(feature !== undefined, 'received a feature');
+ var key = goog.getUid(feature).toString();
+ if (!(key in features)) {
+ features[key] = true;
+ return callback.call(thisArg, feature, layer);
+ }
+ });
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.hasFeatureAtCoordinate = function(coordinate, frameState) {
+ if (!this.replayGroup_ || !this.layerState_) {
+ return false;
+ } else {
+ var context = this.mapRenderer.getContext();
+ var viewState = frameState.viewState;
+ var layerState = this.layerState_;
+ return this.replayGroup_.hasFeatureAtCoordinate(coordinate,
+ context, viewState.center, viewState.resolution, viewState.rotation,
+ frameState.size, frameState.pixelRatio, layerState.opacity,
+ frameState.skippedFeatureUids);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
+ var coordinate = pixel.slice();
+ ol.vec.Mat4.multVec2(
+ frameState.pixelToCoordinateMatrix, coordinate, coordinate);
+ var hasFeature = this.hasFeatureAtCoordinate(coordinate, frameState);
+
+ if (hasFeature) {
+ return callback.call(thisArg, this.getLayer());
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * Handle changes in image style state.
+ * @param {ol.events.Event} event Image style change event.
+ * @private
+ */
+ol.renderer.webgl.VectorLayer.prototype.handleStyleImageChange_ = function(event) {
+ this.renderIfReadyAndVisible();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.VectorLayer.prototype.prepareFrame = function(frameState, layerState, context) {
+
+ var vectorLayer = /** @type {ol.layer.Vector} */ (this.getLayer());
+ goog.asserts.assertInstanceof(vectorLayer, ol.layer.Vector,
+ 'layer is an instance of ol.layer.Vector');
+ var vectorSource = vectorLayer.getSource();
+
+ this.updateAttributions(
+ frameState.attributions, vectorSource.getAttributions());
+ this.updateLogos(frameState, vectorSource);
+
+ var animating = frameState.viewHints[ol.ViewHint.ANIMATING];
+ var interacting = frameState.viewHints[ol.ViewHint.INTERACTING];
+ var updateWhileAnimating = vectorLayer.getUpdateWhileAnimating();
+ var updateWhileInteracting = vectorLayer.getUpdateWhileInteracting();
+
+ if (!this.dirty_ && (!updateWhileAnimating && animating) ||
+ (!updateWhileInteracting && interacting)) {
+ return true;
+ }
+
+ var frameStateExtent = frameState.extent;
+ var viewState = frameState.viewState;
+ var projection = viewState.projection;
+ var resolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var vectorLayerRevision = vectorLayer.getRevision();
+ var vectorLayerRenderBuffer = vectorLayer.getRenderBuffer();
+ var vectorLayerRenderOrder = vectorLayer.getRenderOrder();
+
+ if (vectorLayerRenderOrder === undefined) {
+ vectorLayerRenderOrder = ol.renderer.vector.defaultOrder;
+ }
+
+ var extent = ol.extent.buffer(frameStateExtent,
+ vectorLayerRenderBuffer * resolution);
+
+ if (!this.dirty_ &&
+ this.renderedResolution_ == resolution &&
+ this.renderedRevision_ == vectorLayerRevision &&
+ this.renderedRenderOrder_ == vectorLayerRenderOrder &&
+ ol.extent.containsExtent(this.renderedExtent_, extent)) {
+ return true;
+ }
+
+ if (this.replayGroup_) {
+ frameState.postRenderFunctions.push(
+ this.replayGroup_.getDeleteResourcesFunction(context));
+ }
+
+ this.dirty_ = false;
+
+ var replayGroup = new ol.render.webgl.ReplayGroup(
+ ol.renderer.vector.getTolerance(resolution, pixelRatio),
+ extent, vectorLayer.getRenderBuffer());
+ vectorSource.loadFeatures(extent, resolution, projection);
+ /**
+ * @param {ol.Feature} feature Feature.
+ * @this {ol.renderer.webgl.VectorLayer}
+ */
+ var renderFeature = function(feature) {
+ var styles;
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction.call(feature, resolution);
+ } else {
+ styleFunction = vectorLayer.getStyleFunction();
+ if (styleFunction) {
+ styles = styleFunction(feature, resolution);
+ }
+ }
+ if (styles) {
+ var dirty = this.renderFeature(
+ feature, resolution, pixelRatio, styles, replayGroup);
+ this.dirty_ = this.dirty_ || dirty;
+ }
+ };
+ if (vectorLayerRenderOrder) {
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ vectorSource.forEachFeatureInExtent(extent,
+ /**
+ * @param {ol.Feature} feature Feature.
+ */
+ function(feature) {
+ features.push(feature);
+ }, this);
+ features.sort(vectorLayerRenderOrder);
+ features.forEach(renderFeature, this);
+ } else {
+ vectorSource.forEachFeatureInExtent(extent, renderFeature, this);
+ }
+ replayGroup.finish(context);
+
+ this.renderedResolution_ = resolution;
+ this.renderedRevision_ = vectorLayerRevision;
+ this.renderedRenderOrder_ = vectorLayerRenderOrder;
+ this.renderedExtent_ = extent;
+ this.replayGroup_ = replayGroup;
+
+ return true;
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {(ol.style.Style|Array.<ol.style.Style>)} styles The style or array of
+ * styles.
+ * @param {ol.render.webgl.ReplayGroup} replayGroup Replay group.
+ * @return {boolean} `true` if an image is loading.
+ */
+ol.renderer.webgl.VectorLayer.prototype.renderFeature = function(feature, resolution, pixelRatio, styles, replayGroup) {
+ if (!styles) {
+ return false;
+ }
+ var loading = false;
+ if (Array.isArray(styles)) {
+ for (var i = 0, ii = styles.length; i < ii; ++i) {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles[i],
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ } else {
+ loading = ol.renderer.vector.renderFeature(
+ replayGroup, feature, styles,
+ ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
+ this.handleStyleImageChange_, this) || loading;
+ }
+ return loading;
+};
+
+// FIXME check against gl.getParameter(webgl.MAX_TEXTURE_SIZE)
+
+goog.provide('ol.renderer.webgl.Map');
+
+goog.require('goog.asserts');
+goog.require('goog.webgl');
+goog.require('ol');
+goog.require('ol.RendererType');
+goog.require('ol.array');
+goog.require('ol.css');
+goog.require('ol.dom');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.layer.Image');
+goog.require('ol.layer.Layer');
+goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.webgl.Immediate');
+goog.require('ol.renderer.Map');
+goog.require('ol.renderer.webgl.ImageLayer');
+goog.require('ol.renderer.webgl.Layer');
+goog.require('ol.renderer.webgl.TileLayer');
+goog.require('ol.renderer.webgl.VectorLayer');
+goog.require('ol.source.State');
+goog.require('ol.structs.LRUCache');
+goog.require('ol.structs.PriorityQueue');
+goog.require('ol.webgl');
+goog.require('ol.webgl.Context');
+goog.require('ol.webgl.WebGLContextEventType');
+
+
+/**
+ * @constructor
+ * @extends {ol.renderer.Map}
+ * @param {Element} container Container.
+ * @param {ol.Map} map Map.
+ */
+ol.renderer.webgl.Map = function(container, map) {
+
+ ol.renderer.Map.call(this, container, map);
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = /** @type {HTMLCanvasElement} */
+ (document.createElement('CANVAS'));
+ this.canvas_.style.width = '100%';
+ this.canvas_.style.height = '100%';
+ this.canvas_.className = ol.css.CLASS_UNSELECTABLE;
+ container.insertBefore(this.canvas_, container.childNodes[0] || null);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.clipTileCanvasWidth_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.clipTileCanvasHeight_ = 0;
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.clipTileContext_ = ol.dom.createCanvasContext2D();
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = true;
+
+ /**
+ * @private
+ * @type {WebGLRenderingContext}
+ */
+ this.gl_ = ol.webgl.getContext(this.canvas_, {
+ antialias: true,
+ depth: false,
+ failIfMajorPerformanceCaveat: true,
+ preserveDrawingBuffer: false,
+ stencil: true
+ });
+ goog.asserts.assert(this.gl_, 'got a WebGLRenderingContext');
+
+ /**
+ * @private
+ * @type {ol.webgl.Context}
+ */
+ this.context_ = new ol.webgl.Context(this.canvas_, this.gl_);
+
+ ol.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.LOST,
+ this.handleWebGLContextLost, this);
+ ol.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.RESTORED,
+ this.handleWebGLContextRestored, this);
+
+ /**
+ * @private
+ * @type {ol.structs.LRUCache.<ol.WebglTextureCacheEntry|null>}
+ */
+ this.textureCache_ = new ol.structs.LRUCache();
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.focus_ = null;
+
+ /**
+ * @private
+ * @type {ol.structs.PriorityQueue.<Array>}
+ */
+ this.tileTextureQueue_ = new ol.structs.PriorityQueue(
+ /**
+ * @param {Array.<*>} element Element.
+ * @return {number} Priority.
+ * @this {ol.renderer.webgl.Map}
+ */
+ (function(element) {
+ var tileCenter = /** @type {ol.Coordinate} */ (element[1]);
+ var tileResolution = /** @type {number} */ (element[2]);
+ var deltaX = tileCenter[0] - this.focus_[0];
+ var deltaY = tileCenter[1] - this.focus_[1];
+ return 65536 * Math.log(tileResolution) +
+ Math.sqrt(deltaX * deltaX + deltaY * deltaY) / tileResolution;
+ }).bind(this),
+ /**
+ * @param {Array.<*>} element Element.
+ * @return {string} Key.
+ */
+ function(element) {
+ return /** @type {ol.Tile} */ (element[0]).getKey();
+ });
+
+
+ /**
+ * @param {ol.Map} map Map.
+ * @param {?olx.FrameState} frameState Frame state.
+ * @return {boolean} false.
+ * @this {ol.renderer.webgl.Map}
+ */
+ this.loadNextTileTexture_ =
+ function(map, frameState) {
+ if (!this.tileTextureQueue_.isEmpty()) {
+ this.tileTextureQueue_.reprioritize();
+ var element = this.tileTextureQueue_.dequeue();
+ var tile = /** @type {ol.Tile} */ (element[0]);
+ var tileSize = /** @type {ol.Size} */ (element[3]);
+ var tileGutter = /** @type {number} */ (element[4]);
+ this.bindTileTexture(
+ tile, tileSize, tileGutter, goog.webgl.LINEAR, goog.webgl.LINEAR);
+ }
+ return false;
+ }.bind(this);
+
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.textureCacheFrameMarkerCount_ = 0;
+
+ this.initializeGL_();
+
+};
+ol.inherits(ol.renderer.webgl.Map, ol.renderer.Map);
+
+
+/**
+ * @param {ol.Tile} tile Tile.
+ * @param {ol.Size} tileSize Tile size.
+ * @param {number} tileGutter Tile gutter.
+ * @param {number} magFilter Mag filter.
+ * @param {number} minFilter Min filter.
+ */
+ol.renderer.webgl.Map.prototype.bindTileTexture = function(tile, tileSize, tileGutter, magFilter, minFilter) {
+ var gl = this.getGL();
+ var tileKey = tile.getKey();
+ if (this.textureCache_.containsKey(tileKey)) {
+ var textureCacheEntry = this.textureCache_.get(tileKey);
+ goog.asserts.assert(textureCacheEntry,
+ 'a texture cache entry exists for key %s', tileKey);
+ gl.bindTexture(goog.webgl.TEXTURE_2D, textureCacheEntry.texture);
+ if (textureCacheEntry.magFilter != magFilter) {
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER, magFilter);
+ textureCacheEntry.magFilter = magFilter;
+ }
+ if (textureCacheEntry.minFilter != minFilter) {
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MIN_FILTER, minFilter);
+ textureCacheEntry.minFilter = minFilter;
+ }
+ } else {
+ var texture = gl.createTexture();
+ gl.bindTexture(goog.webgl.TEXTURE_2D, texture);
+ if (tileGutter > 0) {
+ var clipTileCanvas = this.clipTileContext_.canvas;
+ var clipTileContext = this.clipTileContext_;
+ if (this.clipTileCanvasWidth_ !== tileSize[0] ||
+ this.clipTileCanvasHeight_ !== tileSize[1]) {
+ clipTileCanvas.width = tileSize[0];
+ clipTileCanvas.height = tileSize[1];
+ this.clipTileCanvasWidth_ = tileSize[0];
+ this.clipTileCanvasHeight_ = tileSize[1];
+ } else {
+ clipTileContext.clearRect(0, 0, tileSize[0], tileSize[1]);
+ }
+ clipTileContext.drawImage(tile.getImage(), tileGutter, tileGutter,
+ tileSize[0], tileSize[1], 0, 0, tileSize[0], tileSize[1]);
+ gl.texImage2D(goog.webgl.TEXTURE_2D, 0,
+ goog.webgl.RGBA, goog.webgl.RGBA,
+ goog.webgl.UNSIGNED_BYTE, clipTileCanvas);
+ } else {
+ gl.texImage2D(goog.webgl.TEXTURE_2D, 0,
+ goog.webgl.RGBA, goog.webgl.RGBA,
+ goog.webgl.UNSIGNED_BYTE, tile.getImage());
+ }
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER, magFilter);
+ gl.texParameteri(
+ goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MIN_FILTER, minFilter);
+ gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_S,
+ goog.webgl.CLAMP_TO_EDGE);
+ gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_T,
+ goog.webgl.CLAMP_TO_EDGE);
+ this.textureCache_.set(tileKey, {
+ texture: texture,
+ magFilter: magFilter,
+ minFilter: minFilter
+ });
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.createLayerRenderer = function(layer) {
+ if (ol.ENABLE_IMAGE && layer instanceof ol.layer.Image) {
+ return new ol.renderer.webgl.ImageLayer(this, layer);
+ } else if (ol.ENABLE_TILE && layer instanceof ol.layer.Tile) {
+ return new ol.renderer.webgl.TileLayer(this, layer);
+ } else if (ol.ENABLE_VECTOR && layer instanceof ol.layer.Vector) {
+ return new ol.renderer.webgl.VectorLayer(this, layer);
+ } else {
+ goog.asserts.fail('unexpected layer configuration');
+ return null;
+ }
+};
+
+
+/**
+ * @param {ol.render.EventType} type Event type.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.webgl.Map.prototype.dispatchComposeEvent_ = function(type, frameState) {
+ var map = this.getMap();
+ if (map.hasListener(type)) {
+ var context = this.context_;
+
+ var extent = frameState.extent;
+ var size = frameState.size;
+ var viewState = frameState.viewState;
+ var pixelRatio = frameState.pixelRatio;
+
+ var resolution = viewState.resolution;
+ var center = viewState.center;
+ var rotation = viewState.rotation;
+
+ var vectorContext = new ol.render.webgl.Immediate(context,
+ center, resolution, rotation, size, extent, pixelRatio);
+ var composeEvent = new ol.render.Event(type, map, vectorContext,
+ frameState, null, context);
+ map.dispatchEvent(composeEvent);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.disposeInternal = function() {
+ var gl = this.getGL();
+ if (!gl.isContextLost()) {
+ this.textureCache_.forEach(
+ /**
+ * @param {?ol.WebglTextureCacheEntry} textureCacheEntry
+ * Texture cache entry.
+ */
+ function(textureCacheEntry) {
+ if (textureCacheEntry) {
+ gl.deleteTexture(textureCacheEntry.texture);
+ }
+ });
+ }
+ this.context_.dispose();
+ ol.renderer.Map.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @param {ol.Map} map Map.
+ * @param {olx.FrameState} frameState Frame state.
+ * @private
+ */
+ol.renderer.webgl.Map.prototype.expireCache_ = function(map, frameState) {
+ var gl = this.getGL();
+ var textureCacheEntry;
+ while (this.textureCache_.getCount() - this.textureCacheFrameMarkerCount_ >
+ ol.WEBGL_TEXTURE_CACHE_HIGH_WATER_MARK) {
+ textureCacheEntry = this.textureCache_.peekLast();
+ if (!textureCacheEntry) {
+ if (+this.textureCache_.peekLastKey() == frameState.index) {
+ break;
+ } else {
+ --this.textureCacheFrameMarkerCount_;
+ }
+ } else {
+ gl.deleteTexture(textureCacheEntry.texture);
+ }
+ this.textureCache_.pop();
+ }
+};
+
+
+/**
+ * @return {ol.webgl.Context} The context.
+ */
+ol.renderer.webgl.Map.prototype.getContext = function() {
+ return this.context_;
+};
+
+
+/**
+ * @return {WebGLRenderingContext} GL.
+ */
+ol.renderer.webgl.Map.prototype.getGL = function() {
+ return this.gl_;
+};
+
+
+/**
+ * @return {ol.structs.PriorityQueue.<Array>} Tile texture queue.
+ */
+ol.renderer.webgl.Map.prototype.getTileTextureQueue = function() {
+ return this.tileTextureQueue_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.getType = function() {
+ return ol.RendererType.WEBGL;
+};
+
+
+/**
+ * @param {ol.events.Event} event Event.
+ * @protected
+ */
+ol.renderer.webgl.Map.prototype.handleWebGLContextLost = function(event) {
+ event.preventDefault();
+ this.textureCache_.clear();
+ this.textureCacheFrameMarkerCount_ = 0;
+
+ var renderers = this.getLayerRenderers();
+ for (var id in renderers) {
+ var renderer = /** @type {ol.renderer.webgl.Layer} */ (renderers[id]);
+ renderer.handleWebGLContextLost();
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.renderer.webgl.Map.prototype.handleWebGLContextRestored = function() {
+ this.initializeGL_();
+ this.getMap().render();
+};
+
+
+/**
+ * @private
+ */
+ol.renderer.webgl.Map.prototype.initializeGL_ = function() {
+ var gl = this.gl_;
+ gl.activeTexture(goog.webgl.TEXTURE0);
+ gl.blendFuncSeparate(
+ goog.webgl.SRC_ALPHA, goog.webgl.ONE_MINUS_SRC_ALPHA,
+ goog.webgl.ONE, goog.webgl.ONE_MINUS_SRC_ALPHA);
+ gl.disable(goog.webgl.CULL_FACE);
+ gl.disable(goog.webgl.DEPTH_TEST);
+ gl.disable(goog.webgl.SCISSOR_TEST);
+ gl.disable(goog.webgl.STENCIL_TEST);
+};
+
+
+/**
+ * @param {ol.Tile} tile Tile.
+ * @return {boolean} Is tile texture loaded.
+ */
+ol.renderer.webgl.Map.prototype.isTileTextureLoaded = function(tile) {
+ return this.textureCache_.containsKey(tile.getKey());
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.renderFrame = function(frameState) {
+
+ var context = this.getContext();
+ var gl = this.getGL();
+
+ if (gl.isContextLost()) {
+ return false;
+ }
+
+ if (!frameState) {
+ if (this.renderedVisible_) {
+ this.canvas_.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return false;
+ }
+
+ this.focus_ = frameState.focus;
+
+ this.textureCache_.set((-frameState.index).toString(), null);
+ ++this.textureCacheFrameMarkerCount_;
+
+ this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
+
+ /** @type {Array.<ol.LayerState>} */
+ var layerStatesToDraw = [];
+ var layerStatesArray = frameState.layerStatesArray;
+ ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+
+ var viewResolution = frameState.viewState.resolution;
+ var i, ii, layerRenderer, layerState;
+ for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
+ layerState = layerStatesArray[i];
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
+ layerState.sourceState == ol.source.State.READY) {
+ layerRenderer = this.getLayerRenderer(layerState.layer);
+ goog.asserts.assertInstanceof(layerRenderer, ol.renderer.webgl.Layer,
+ 'renderer is an instance of ol.renderer.webgl.Layer');
+ if (layerRenderer.prepareFrame(frameState, layerState, context)) {
+ layerStatesToDraw.push(layerState);
+ }
+ }
+ }
+
+ var width = frameState.size[0] * frameState.pixelRatio;
+ var height = frameState.size[1] * frameState.pixelRatio;
+ if (this.canvas_.width != width || this.canvas_.height != height) {
+ this.canvas_.width = width;
+ this.canvas_.height = height;
+ }
+
+ gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, null);
+
+ gl.clearColor(0, 0, 0, 0);
+ gl.clear(goog.webgl.COLOR_BUFFER_BIT);
+ gl.enable(goog.webgl.BLEND);
+ gl.viewport(0, 0, this.canvas_.width, this.canvas_.height);
+
+ for (i = 0, ii = layerStatesToDraw.length; i < ii; ++i) {
+ layerState = layerStatesToDraw[i];
+ layerRenderer = this.getLayerRenderer(layerState.layer);
+ goog.asserts.assertInstanceof(layerRenderer, ol.renderer.webgl.Layer,
+ 'renderer is an instance of ol.renderer.webgl.Layer');
+ layerRenderer.composeFrame(frameState, layerState, context);
+ }
+
+ if (!this.renderedVisible_) {
+ this.canvas_.style.display = '';
+ this.renderedVisible_ = true;
+ }
+
+ this.calculateMatrices2D(frameState);
+
+ if (this.textureCache_.getCount() - this.textureCacheFrameMarkerCount_ >
+ ol.WEBGL_TEXTURE_CACHE_HIGH_WATER_MARK) {
+ frameState.postRenderFunctions.push(
+ /** @type {ol.PostRenderFunction} */ (this.expireCache_.bind(this))
+ );
+ }
+
+ if (!this.tileTextureQueue_.isEmpty()) {
+ frameState.postRenderFunctions.push(this.loadNextTileTexture_);
+ frameState.animate = true;
+ }
+
+ this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, frameState);
+
+ this.scheduleRemoveUnusedLayerRenderers(frameState);
+ this.scheduleExpireIconCache(frameState);
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg,
+ layerFilter, thisArg2) {
+ var result;
+
+ if (this.getGL().isContextLost()) {
+ return false;
+ }
+
+ var viewState = frameState.viewState;
+
+ var layerStates = frameState.layerStatesArray;
+ var numLayers = layerStates.length;
+ var i;
+ for (i = numLayers - 1; i >= 0; --i) {
+ var layerState = layerStates[i];
+ var layer = layerState.layer;
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewState.resolution) &&
+ layerFilter.call(thisArg2, layer)) {
+ var layerRenderer = this.getLayerRenderer(layer);
+ result = layerRenderer.forEachFeatureAtCoordinate(
+ coordinate, frameState, callback, thisArg);
+ if (result) {
+ return result;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.hasFeatureAtCoordinate = function(coordinate, frameState, layerFilter, thisArg) {
+ var hasFeature = false;
+
+ if (this.getGL().isContextLost()) {
+ return false;
+ }
+
+ var viewState = frameState.viewState;
+
+ var layerStates = frameState.layerStatesArray;
+ var numLayers = layerStates.length;
+ var i;
+ for (i = numLayers - 1; i >= 0; --i) {
+ var layerState = layerStates[i];
+ var layer = layerState.layer;
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewState.resolution) &&
+ layerFilter.call(thisArg, layer)) {
+ var layerRenderer = this.getLayerRenderer(layer);
+ hasFeature =
+ layerRenderer.hasFeatureAtCoordinate(coordinate, frameState);
+ if (hasFeature) {
+ return true;
+ }
+ }
+ }
+ return hasFeature;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.renderer.webgl.Map.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg,
+ layerFilter, thisArg2) {
+ if (this.getGL().isContextLost()) {
+ return false;
+ }
+
+ var viewState = frameState.viewState;
+ var result;
+
+ var layerStates = frameState.layerStatesArray;
+ var numLayers = layerStates.length;
+ var i;
+ for (i = numLayers - 1; i >= 0; --i) {
+ var layerState = layerStates[i];
+ var layer = layerState.layer;
+ if (ol.layer.Layer.visibleAtResolution(layerState, viewState.resolution) &&
+ layerFilter.call(thisArg, layer)) {
+ var layerRenderer = this.getLayerRenderer(layer);
+ result = layerRenderer.forEachLayerAtPixel(
+ pixel, frameState, callback, thisArg);
+ if (result) {
+ return result;
+ }
+ }
+ }
+ return undefined;
+};
+
+// FIXME recheck layer/map projection compatibility when projection changes
+// FIXME layer renderers should skip when they can't reproject
+// FIXME add tilt and height?
+
+goog.provide('ol.Map');
+goog.provide('ol.MapProperty');
+
+goog.require('goog.asserts');
+goog.require('goog.async.nextTick');
+goog.require('goog.vec.Mat4');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEventType');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.MapBrowserEventHandler');
+goog.require('ol.MapEvent');
+goog.require('ol.MapEventType');
+goog.require('ol.Object');
+goog.require('ol.ObjectEvent');
+goog.require('ol.ObjectEventType');
+goog.require('ol.RendererType');
+goog.require('ol.TileQueue');
+goog.require('ol.View');
+goog.require('ol.ViewHint');
+goog.require('ol.array');
+goog.require('ol.control');
+goog.require('ol.dom');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.functions');
+goog.require('ol.has');
+goog.require('ol.interaction');
+goog.require('ol.layer.Base');
+goog.require('ol.layer.Group');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.proj.common');
+goog.require('ol.renderer.Map');
+goog.require('ol.renderer.canvas.Map');
+goog.require('ol.renderer.dom.Map');
+goog.require('ol.renderer.webgl.Map');
+goog.require('ol.size');
+goog.require('ol.structs.PriorityQueue');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.OL3_URL = 'http://openlayers.org/';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.OL3_LOGO_URL = 'data:image/png;base64,' +
+ 'iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAAAA3NCSVQICAjb4U/gAAAACXBI' +
+ 'WXMAAAHGAAABxgEXwfpGAAAAGXRFWHRTb2Z0d2FyZQB3d3cuaW5rc2NhcGUub3Jnm+48GgAA' +
+ 'AhNQTFRF////AP//AICAgP//AFVVQECA////K1VVSbbbYL/fJ05idsTYJFtbbcjbJllmZszW' +
+ 'WMTOIFhoHlNiZszTa9DdUcHNHlNlV8XRIVdiasrUHlZjIVZjaMnVH1RlIFRkH1RkH1ZlasvY' +
+ 'asvXVsPQH1VkacnVa8vWIVZjIFRjVMPQa8rXIVVkXsXRsNveIFVkIFZlIVVj3eDeh6GmbMvX' +
+ 'H1ZkIFRka8rWbMvXIFVkIFVjIFVkbMvWH1VjbMvWIFVlbcvWIFVla8vVIFVkbMvWbMvVH1Vk' +
+ 'bMvWIFVlbcvWIFVkbcvVbMvWjNPbIFVkU8LPwMzNIFVkbczWIFVkbsvWbMvXIFVkRnB8bcvW' +
+ '2+TkW8XRIFVkIlZlJVloJlpoKlxrLl9tMmJwOWd0Omh1RXF8TneCT3iDUHiDU8LPVMLPVcLP' +
+ 'VcPQVsPPVsPQV8PQWMTQWsTQW8TQXMXSXsXRX4SNX8bSYMfTYcfTYsfTY8jUZcfSZsnUaIqT' +
+ 'acrVasrVa8jTa8rWbI2VbMvWbcvWdJObdcvUdszUd8vVeJaee87Yfc3WgJyjhqGnitDYjaar' +
+ 'ldPZnrK2oNbborW5o9bbo9fbpLa6q9ndrL3ArtndscDDutzfu8fJwN7gwt7gxc/QyuHhy+Hi' +
+ 'zeHi0NfX0+Pj19zb1+Tj2uXk29/e3uLg3+Lh3+bl4uXj4ufl4+fl5Ofl5ufl5ujm5+jmySDn' +
+ 'BAAAAFp0Uk5TAAECAgMEBAYHCA0NDg4UGRogIiMmKSssLzU7PkJJT1JTVFliY2hrdHZ3foSF' +
+ 'hYeJjY2QkpugqbG1tre5w8zQ09XY3uXn6+zx8vT09vf4+Pj5+fr6/P39/f3+gz7SsAAAAVVJ' +
+ 'REFUOMtjYKA7EBDnwCPLrObS1BRiLoJLnte6CQy8FLHLCzs2QUG4FjZ5GbcmBDDjxJBXDWxC' +
+ 'Brb8aM4zbkIDzpLYnAcE9VXlJSWlZRU13koIeW57mGx5XjoMZEUqwxWYQaQbSzLSkYGfKFSe' +
+ '0QMsX5WbjgY0YS4MBplemI4BdGBW+DQ11eZiymfqQuXZIjqwyadPNoSZ4L+0FVM6e+oGI6g8' +
+ 'a9iKNT3o8kVzNkzRg5lgl7p4wyRUL9Yt2jAxVh6mQCogae6GmflI8p0r13VFWTHBQ0rWPW7a' +
+ 'hgWVcPm+9cuLoyy4kCJDzCm6d8PSFoh0zvQNC5OjDJhQopPPJqph1doJBUD5tnkbZiUEqaCn' +
+ 'B3bTqLTFG1bPn71kw4b+GFdpLElKIzRxxgYgWNYc5SCENVHKeUaltHdXx0dZ8uBI1hJ2UUDg' +
+ 'q82CM2MwKeibqAvSO7MCABq0wXEPiqWEAAAAAElFTkSuQmCC';
+
+
+/**
+ * @type {Array.<ol.RendererType>}
+ * @const
+ */
+ol.DEFAULT_RENDERER_TYPES = [
+ ol.RendererType.CANVAS,
+ ol.RendererType.WEBGL,
+ ol.RendererType.DOM
+];
+
+
+/**
+ * @enum {string}
+ */
+ol.MapProperty = {
+ LAYERGROUP: 'layergroup',
+ SIZE: 'size',
+ TARGET: 'target',
+ VIEW: 'view'
+};
+
+
+/**
+ * @classdesc
+ * The map is the core component of OpenLayers. For a map to render, a view,
+ * one or more layers, and a target container are needed:
+ *
+ * var map = new ol.Map({
+ * view: new ol.View({
+ * center: [0, 0],
+ * zoom: 1
+ * }),
+ * layers: [
+ * new ol.layer.Tile({
+ * source: new ol.source.OSM()
+ * })
+ * ],
+ * target: 'map'
+ * });
+ *
+ * The above snippet creates a map using a {@link ol.layer.Tile} to display
+ * {@link ol.source.OSM} OSM data and render it to a DOM element with the
+ * id `map`.
+ *
+ * The constructor places a viewport container (with CSS class name
+ * `ol-viewport`) in the target element (see `getViewport()`), and then two
+ * further elements within the viewport: one with CSS class name
+ * `ol-overlaycontainer-stopevent` for controls and some overlays, and one with
+ * CSS class name `ol-overlaycontainer` for other overlays (see the `stopEvent`
+ * option of {@link ol.Overlay} for the difference). The map itself is placed in
+ * a further element within the viewport, either DOM or Canvas, depending on the
+ * renderer.
+ *
+ * Layers are stored as a `ol.Collection` in layerGroups. A top-level group is
+ * provided by the library. This is what is accessed by `getLayerGroup` and
+ * `setLayerGroup`. Layers entered in the options are added to this group, and
+ * `addLayer` and `removeLayer` change the layer collection in the group.
+ * `getLayers` is a convenience function for `getLayerGroup().getLayers()`.
+ * Note that `ol.layer.Group` is a subclass of `ol.layer.Base`, so layers
+ * entered in the options or added with `addLayer` can be groups, which can
+ * contain further groups, and so on.
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.MapOptions} options Map options.
+ * @fires ol.MapBrowserEvent
+ * @fires ol.MapEvent
+ * @fires ol.render.Event#postcompose
+ * @fires ol.render.Event#precompose
+ * @api stable
+ */
+ol.Map = function(options) {
+
+ ol.Object.call(this);
+
+ var optionsInternal = ol.Map.createOptionsInternal(options);
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.loadTilesWhileAnimating_ =
+ options.loadTilesWhileAnimating !== undefined ?
+ options.loadTilesWhileAnimating : false;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.loadTilesWhileInteracting_ =
+ options.loadTilesWhileInteracting !== undefined ?
+ options.loadTilesWhileInteracting : false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.pixelRatio_ = options.pixelRatio !== undefined ?
+ options.pixelRatio : ol.has.DEVICE_PIXEL_RATIO;
+
+ /**
+ * @private
+ * @type {Object.<string, string>}
+ */
+ this.logos_ = optionsInternal.logos;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.animationDelayKey_;
+
+ /**
+ * @private
+ */
+ this.animationDelay_ = function() {
+ this.animationDelayKey_ = undefined;
+ this.renderFrame_.call(this, Date.now());
+ }.bind(this);
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.coordinateToPixelMatrix_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {goog.vec.Mat4.Number}
+ */
+ this.pixelToCoordinateMatrix_ = goog.vec.Mat4.createNumber();
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.frameIndex_ = 0;
+
+ /**
+ * @private
+ * @type {?olx.FrameState}
+ */
+ this.frameState_ = null;
+
+ /**
+ * The extent at the previous 'moveend' event.
+ * @private
+ * @type {ol.Extent}
+ */
+ this.previousExtent_ = ol.extent.createEmpty();
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.viewPropertyListenerKey_ = null;
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.layerGroupPropertyListenerKeys_ = null;
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.viewport_ = document.createElement('DIV');
+ this.viewport_.className = 'ol-viewport' + (ol.has.TOUCH ? ' ol-touch' : '');
+ this.viewport_.style.position = 'relative';
+ this.viewport_.style.overflow = 'hidden';
+ this.viewport_.style.width = '100%';
+ this.viewport_.style.height = '100%';
+ // prevent page zoom on IE >= 10 browsers
+ this.viewport_.style.msTouchAction = 'none';
+ this.viewport_.style.touchAction = 'none';
+
+ /**
+ * @private
+ * @type {!Element}
+ */
+ this.overlayContainer_ = document.createElement('DIV');
+ this.overlayContainer_.className = 'ol-overlaycontainer';
+ this.viewport_.appendChild(this.overlayContainer_);
+
+ /**
+ * @private
+ * @type {!Element}
+ */
+ this.overlayContainerStopEvent_ = document.createElement('DIV');
+ this.overlayContainerStopEvent_.className = 'ol-overlaycontainer-stopevent';
+ var overlayEvents = [
+ ol.events.EventType.CLICK,
+ ol.events.EventType.DBLCLICK,
+ ol.events.EventType.MOUSEDOWN,
+ ol.events.EventType.TOUCHSTART,
+ ol.events.EventType.MSPOINTERDOWN,
+ ol.MapBrowserEvent.EventType.POINTERDOWN,
+ ol.events.EventType.MOUSEWHEEL,
+ ol.events.EventType.WHEEL
+ ];
+ for (var i = 0, ii = overlayEvents.length; i < ii; ++i) {
+ ol.events.listen(this.overlayContainerStopEvent_, overlayEvents[i],
+ ol.events.Event.stopPropagation);
+ }
+ this.viewport_.appendChild(this.overlayContainerStopEvent_);
+
+ /**
+ * @private
+ * @type {ol.MapBrowserEventHandler}
+ */
+ this.mapBrowserEventHandler_ = new ol.MapBrowserEventHandler(this);
+ for (var key in ol.MapBrowserEvent.EventType) {
+ ol.events.listen(this.mapBrowserEventHandler_, ol.MapBrowserEvent.EventType[key],
+ this.handleMapBrowserEvent, this);
+ }
+
+ /**
+ * @private
+ * @type {Element|Document}
+ */
+ this.keyboardEventTarget_ = optionsInternal.keyboardEventTarget;
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.keyHandlerKeys_ = null;
+
+ ol.events.listen(this.viewport_, ol.events.EventType.WHEEL,
+ this.handleBrowserEvent, this);
+ ol.events.listen(this.viewport_, ol.events.EventType.MOUSEWHEEL,
+ this.handleBrowserEvent, this);
+
+ /**
+ * @type {ol.Collection.<ol.control.Control>}
+ * @private
+ */
+ this.controls_ = optionsInternal.controls;
+
+ /**
+ * @type {ol.Collection.<ol.interaction.Interaction>}
+ * @private
+ */
+ this.interactions_ = optionsInternal.interactions;
+
+ /**
+ * @type {ol.Collection.<ol.Overlay>}
+ * @private
+ */
+ this.overlays_ = optionsInternal.overlays;
+
+ /**
+ * A lookup of overlays by id.
+ * @private
+ * @type {Object.<string, ol.Overlay>}
+ */
+ this.overlayIdIndex_ = {};
+
+ /**
+ * @type {ol.renderer.Map}
+ * @private
+ */
+ this.renderer_ = new optionsInternal.rendererConstructor(this.viewport_, this);
+
+ /**
+ * @type {function(Event)|undefined}
+ * @private
+ */
+ this.handleResize_;
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.focus_ = null;
+
+ /**
+ * @private
+ * @type {Array.<ol.PreRenderFunction>}
+ */
+ this.preRenderFunctions_ = [];
+
+ /**
+ * @private
+ * @type {Array.<ol.PostRenderFunction>}
+ */
+ this.postRenderFunctions_ = [];
+
+ /**
+ * @private
+ * @type {ol.TileQueue}
+ */
+ this.tileQueue_ = new ol.TileQueue(
+ this.getTilePriority.bind(this),
+ this.handleTileChange_.bind(this));
+
+ /**
+ * Uids of features to skip at rendering time.
+ * @type {Object.<string, boolean>}
+ * @private
+ */
+ this.skippedFeatureUids_ = {};
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.MapProperty.LAYERGROUP),
+ this.handleLayerGroupChanged_, this);
+ ol.events.listen(this, ol.Object.getChangeEventType(ol.MapProperty.VIEW),
+ this.handleViewChanged_, this);
+ ol.events.listen(this, ol.Object.getChangeEventType(ol.MapProperty.SIZE),
+ this.handleSizeChanged_, this);
+ ol.events.listen(this, ol.Object.getChangeEventType(ol.MapProperty.TARGET),
+ this.handleTargetChanged_, this);
+
+ // setProperties will trigger the rendering of the map if the map
+ // is "defined" already.
+ this.setProperties(optionsInternal.values);
+
+ this.controls_.forEach(
+ /**
+ * @param {ol.control.Control} control Control.
+ * @this {ol.Map}
+ */
+ function(control) {
+ control.setMap(this);
+ }, this);
+
+ ol.events.listen(this.controls_, ol.CollectionEventType.ADD,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ event.element.setMap(this);
+ }, this);
+
+ ol.events.listen(this.controls_, ol.CollectionEventType.REMOVE,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ event.element.setMap(null);
+ }, this);
+
+ this.interactions_.forEach(
+ /**
+ * @param {ol.interaction.Interaction} interaction Interaction.
+ * @this {ol.Map}
+ */
+ function(interaction) {
+ interaction.setMap(this);
+ }, this);
+
+ ol.events.listen(this.interactions_, ol.CollectionEventType.ADD,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ event.element.setMap(this);
+ }, this);
+
+ ol.events.listen(this.interactions_, ol.CollectionEventType.REMOVE,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ event.element.setMap(null);
+ }, this);
+
+ this.overlays_.forEach(this.addOverlayInternal_, this);
+
+ ol.events.listen(this.overlays_, ol.CollectionEventType.ADD,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ this.addOverlayInternal_(/** @type {ol.Overlay} */ (event.element));
+ }, this);
+
+ ol.events.listen(this.overlays_, ol.CollectionEventType.REMOVE,
+ /**
+ * @param {ol.CollectionEvent} event Collection event.
+ */
+ function(event) {
+ var id = event.element.getId();
+ if (id !== undefined) {
+ delete this.overlayIdIndex_[id.toString()];
+ }
+ event.element.setMap(null);
+ }, this);
+
+};
+ol.inherits(ol.Map, ol.Object);
+
+
+/**
+ * Add the given control to the map.
+ * @param {ol.control.Control} control Control.
+ * @api stable
+ */
+ol.Map.prototype.addControl = function(control) {
+ var controls = this.getControls();
+ goog.asserts.assert(controls !== undefined, 'controls should be defined');
+ controls.push(control);
+};
+
+
+/**
+ * Add the given interaction to the map.
+ * @param {ol.interaction.Interaction} interaction Interaction to add.
+ * @api stable
+ */
+ol.Map.prototype.addInteraction = function(interaction) {
+ var interactions = this.getInteractions();
+ goog.asserts.assert(interactions !== undefined,
+ 'interactions should be defined');
+ interactions.push(interaction);
+};
+
+
+/**
+ * Adds the given layer to the top of this map. If you want to add a layer
+ * elsewhere in the stack, use `getLayers()` and the methods available on
+ * {@link ol.Collection}.
+ * @param {ol.layer.Base} layer Layer.
+ * @api stable
+ */
+ol.Map.prototype.addLayer = function(layer) {
+ var layers = this.getLayerGroup().getLayers();
+ layers.push(layer);
+};
+
+
+/**
+ * Add the given overlay to the map.
+ * @param {ol.Overlay} overlay Overlay.
+ * @api stable
+ */
+ol.Map.prototype.addOverlay = function(overlay) {
+ var overlays = this.getOverlays();
+ goog.asserts.assert(overlays !== undefined, 'overlays should be defined');
+ overlays.push(overlay);
+};
+
+
+/**
+ * This deals with map's overlay collection changes.
+ * @param {ol.Overlay} overlay Overlay.
+ * @private
+ */
+ol.Map.prototype.addOverlayInternal_ = function(overlay) {
+ var id = overlay.getId();
+ if (id !== undefined) {
+ this.overlayIdIndex_[id.toString()] = overlay;
+ }
+ overlay.setMap(this);
+};
+
+
+/**
+ * Add functions to be called before rendering. This can be used for attaching
+ * animations before updating the map's view. The {@link ol.animation}
+ * namespace provides several static methods for creating prerender functions.
+ * @param {...ol.PreRenderFunction} var_args Any number of pre-render functions.
+ * @api
+ */
+ol.Map.prototype.beforeRender = function(var_args) {
+ this.render();
+ Array.prototype.push.apply(this.preRenderFunctions_, arguments);
+};
+
+
+/**
+ * @param {ol.PreRenderFunction} preRenderFunction Pre-render function.
+ * @return {boolean} Whether the preRenderFunction has been found and removed.
+ */
+ol.Map.prototype.removePreRenderFunction = function(preRenderFunction) {
+ return ol.array.remove(this.preRenderFunctions_, preRenderFunction);
+};
+
+
+/**
+ *
+ * @inheritDoc
+ */
+ol.Map.prototype.disposeInternal = function() {
+ this.mapBrowserEventHandler_.dispose();
+ this.renderer_.dispose();
+ ol.events.unlisten(this.viewport_, ol.events.EventType.WHEEL,
+ this.handleBrowserEvent, this);
+ ol.events.unlisten(this.viewport_, ol.events.EventType.MOUSEWHEEL,
+ this.handleBrowserEvent, this);
+ if (this.handleResize_ !== undefined) {
+ ol.global.removeEventListener(ol.events.EventType.RESIZE,
+ this.handleResize_, false);
+ this.handleResize_ = undefined;
+ }
+ if (this.animationDelayKey_) {
+ ol.global.cancelAnimationFrame(this.animationDelayKey_);
+ this.animationDelayKey_ = undefined;
+ }
+ this.setTarget(null);
+ ol.Object.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Detect features that intersect a pixel on the viewport, and execute a
+ * callback with each intersecting feature. Layers included in the detection can
+ * be configured through `opt_layerFilter`.
+ * @param {ol.Pixel} pixel Pixel.
+ * @param {function(this: S, (ol.Feature|ol.render.Feature),
+ * ol.layer.Layer): T} callback Feature callback. The callback will be
+ * called with two arguments. The first argument is one
+ * {@link ol.Feature feature} or
+ * {@link ol.render.Feature render feature} at the pixel, the second is
+ * the {@link ol.layer.Layer layer} of the feature and will be null for
+ * unmanaged layers. To stop detection, callback functions can return a
+ * truthy value.
+ * @param {S=} opt_this Value to use as `this` when executing `callback`.
+ * @param {(function(this: U, ol.layer.Layer): boolean)=} opt_layerFilter Layer
+ * filter function. The filter function will receive one argument, the
+ * {@link ol.layer.Layer layer-candidate} and it should return a boolean
+ * value. Only layers which are visible and for which this function returns
+ * `true` will be tested for features. By default, all visible layers will
+ * be tested.
+ * @param {U=} opt_this2 Value to use as `this` when executing `layerFilter`.
+ * @return {T|undefined} Callback result, i.e. the return value of last
+ * callback execution, or the first truthy callback return value.
+ * @template S,T,U
+ * @api stable
+ */
+ol.Map.prototype.forEachFeatureAtPixel = function(pixel, callback, opt_this, opt_layerFilter, opt_this2) {
+ if (!this.frameState_) {
+ return;
+ }
+ var coordinate = this.getCoordinateFromPixel(pixel);
+ var thisArg = opt_this !== undefined ? opt_this : null;
+ var layerFilter = opt_layerFilter !== undefined ?
+ opt_layerFilter : ol.functions.TRUE;
+ var thisArg2 = opt_this2 !== undefined ? opt_this2 : null;
+ return this.renderer_.forEachFeatureAtCoordinate(
+ coordinate, this.frameState_, callback, thisArg,
+ layerFilter, thisArg2);
+};
+
+
+/**
+ * Detect layers that have a color value at a pixel on the viewport, and
+ * execute a callback with each matching layer. Layers included in the
+ * detection can be configured through `opt_layerFilter`.
+ * @param {ol.Pixel} pixel Pixel.
+ * @param {function(this: S, ol.layer.Layer): T} callback Layer
+ * callback. Will receive one argument, the {@link ol.layer.Layer layer}
+ * that contains the color pixel. To stop detection, callback functions can
+ * return a truthy value.
+ * @param {S=} opt_this Value to use as `this` when executing `callback`.
+ * @param {(function(this: U, ol.layer.Layer): boolean)=} opt_layerFilter Layer
+ * filter function. The filter function will receive one argument, the
+ * {@link ol.layer.Layer layer-candidate} and it should return a boolean
+ * value. Only layers which are visible and for which this function returns
+ * `true` will be tested for features. By default, all visible layers will
+ * be tested.
+ * @param {U=} opt_this2 Value to use as `this` when executing `layerFilter`.
+ * @return {T|undefined} Callback result, i.e. the return value of last
+ * callback execution, or the first truthy callback return value.
+ * @template S,T,U
+ * @api stable
+ */
+ol.Map.prototype.forEachLayerAtPixel = function(pixel, callback, opt_this, opt_layerFilter, opt_this2) {
+ if (!this.frameState_) {
+ return;
+ }
+ var thisArg = opt_this !== undefined ? opt_this : null;
+ var layerFilter = opt_layerFilter !== undefined ?
+ opt_layerFilter : ol.functions.TRUE;
+ var thisArg2 = opt_this2 !== undefined ? opt_this2 : null;
+ return this.renderer_.forEachLayerAtPixel(
+ pixel, this.frameState_, callback, thisArg,
+ layerFilter, thisArg2);
+};
+
+
+/**
+ * Detect if features intersect a pixel on the viewport. Layers included in the
+ * detection can be configured through `opt_layerFilter`.
+ * @param {ol.Pixel} pixel Pixel.
+ * @param {(function(this: U, ol.layer.Layer): boolean)=} opt_layerFilter Layer
+ * filter function. The filter function will receive one argument, the
+ * {@link ol.layer.Layer layer-candidate} and it should return a boolean
+ * value. Only layers which are visible and for which this function returns
+ * `true` will be tested for features. By default, all visible layers will
+ * be tested.
+ * @param {U=} opt_this Value to use as `this` when executing `layerFilter`.
+ * @return {boolean} Is there a feature at the given pixel?
+ * @template U
+ * @api
+ */
+ol.Map.prototype.hasFeatureAtPixel = function(pixel, opt_layerFilter, opt_this) {
+ if (!this.frameState_) {
+ return false;
+ }
+ var coordinate = this.getCoordinateFromPixel(pixel);
+ var layerFilter = opt_layerFilter !== undefined ?
+ opt_layerFilter : ol.functions.TRUE;
+ var thisArg = opt_this !== undefined ? opt_this : null;
+ return this.renderer_.hasFeatureAtCoordinate(
+ coordinate, this.frameState_, layerFilter, thisArg);
+};
+
+
+/**
+ * Returns the geographical coordinate for a browser event.
+ * @param {Event} event Event.
+ * @return {ol.Coordinate} Coordinate.
+ * @api stable
+ */
+ol.Map.prototype.getEventCoordinate = function(event) {
+ return this.getCoordinateFromPixel(this.getEventPixel(event));
+};
+
+
+/**
+ * Returns the map pixel position for a browser event relative to the viewport.
+ * @param {Event} event Event.
+ * @return {ol.Pixel} Pixel.
+ * @api stable
+ */
+ol.Map.prototype.getEventPixel = function(event) {
+ var viewportPosition = this.viewport_.getBoundingClientRect();
+ var eventPosition = event.changedTouches ? event.changedTouches[0] : event;
+ return [
+ eventPosition.clientX - viewportPosition.left,
+ eventPosition.clientY - viewportPosition.top
+ ];
+};
+
+
+/**
+ * Get the target in which this map is rendered.
+ * Note that this returns what is entered as an option or in setTarget:
+ * if that was an element, it returns an element; if a string, it returns that.
+ * @return {Element|string|undefined} The Element or id of the Element that the
+ * map is rendered in.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.getTarget = function() {
+ return /** @type {Element|string|undefined} */ (
+ this.get(ol.MapProperty.TARGET));
+};
+
+
+/**
+ * Get the DOM element into which this map is rendered. In contrast to
+ * `getTarget` this method always return an `Element`, or `null` if the
+ * map has no target.
+ * @return {Element} The element that the map is rendered in.
+ * @api
+ */
+ol.Map.prototype.getTargetElement = function() {
+ var target = this.getTarget();
+ if (target !== undefined) {
+ return typeof target === 'string' ?
+ document.getElementById(target) :
+ target;
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * Get the coordinate for a given pixel. This returns a coordinate in the
+ * map view projection.
+ * @param {ol.Pixel} pixel Pixel position in the map viewport.
+ * @return {ol.Coordinate} The coordinate for the pixel position.
+ * @api stable
+ */
+ol.Map.prototype.getCoordinateFromPixel = function(pixel) {
+ var frameState = this.frameState_;
+ if (!frameState) {
+ return null;
+ } else {
+ var vec2 = pixel.slice();
+ return ol.vec.Mat4.multVec2(frameState.pixelToCoordinateMatrix, vec2, vec2);
+ }
+};
+
+
+/**
+ * Get the map controls. Modifying this collection changes the controls
+ * associated with the map.
+ * @return {ol.Collection.<ol.control.Control>} Controls.
+ * @api stable
+ */
+ol.Map.prototype.getControls = function() {
+ return this.controls_;
+};
+
+
+/**
+ * Get the map overlays. Modifying this collection changes the overlays
+ * associated with the map.
+ * @return {ol.Collection.<ol.Overlay>} Overlays.
+ * @api stable
+ */
+ol.Map.prototype.getOverlays = function() {
+ return this.overlays_;
+};
+
+
+/**
+ * Get an overlay by its identifier (the value returned by overlay.getId()).
+ * Note that the index treats string and numeric identifiers as the same. So
+ * `map.getOverlayById(2)` will return an overlay with id `'2'` or `2`.
+ * @param {string|number} id Overlay identifier.
+ * @return {ol.Overlay} Overlay.
+ * @api
+ */
+ol.Map.prototype.getOverlayById = function(id) {
+ var overlay = this.overlayIdIndex_[id.toString()];
+ return overlay !== undefined ? overlay : null;
+};
+
+
+/**
+ * Get the map interactions. Modifying this collection changes the interactions
+ * associated with the map.
+ *
+ * Interactions are used for e.g. pan, zoom and rotate.
+ * @return {ol.Collection.<ol.interaction.Interaction>} Interactions.
+ * @api stable
+ */
+ol.Map.prototype.getInteractions = function() {
+ return this.interactions_;
+};
+
+
+/**
+ * Get the layergroup associated with this map.
+ * @return {ol.layer.Group} A layer group containing the layers in this map.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.getLayerGroup = function() {
+ return /** @type {ol.layer.Group} */ (this.get(ol.MapProperty.LAYERGROUP));
+};
+
+
+/**
+ * Get the collection of layers associated with this map.
+ * @return {!ol.Collection.<ol.layer.Base>} Layers.
+ * @api stable
+ */
+ol.Map.prototype.getLayers = function() {
+ var layers = this.getLayerGroup().getLayers();
+ return layers;
+};
+
+
+/**
+ * Get the pixel for a coordinate. This takes a coordinate in the map view
+ * projection and returns the corresponding pixel.
+ * @param {ol.Coordinate} coordinate A map coordinate.
+ * @return {ol.Pixel} A pixel position in the map viewport.
+ * @api stable
+ */
+ol.Map.prototype.getPixelFromCoordinate = function(coordinate) {
+ var frameState = this.frameState_;
+ if (!frameState) {
+ return null;
+ } else {
+ var vec2 = coordinate.slice(0, 2);
+ return ol.vec.Mat4.multVec2(frameState.coordinateToPixelMatrix, vec2, vec2);
+ }
+};
+
+
+/**
+ * Get the map renderer.
+ * @return {ol.renderer.Map} Renderer
+ */
+ol.Map.prototype.getRenderer = function() {
+ return this.renderer_;
+};
+
+
+/**
+ * Get the size of this map.
+ * @return {ol.Size|undefined} The size in pixels of the map in the DOM.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.getSize = function() {
+ return /** @type {ol.Size|undefined} */ (this.get(ol.MapProperty.SIZE));
+};
+
+
+/**
+ * Get the view associated with this map. A view manages properties such as
+ * center and resolution.
+ * @return {ol.View} The view that controls this map.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.getView = function() {
+ return /** @type {ol.View} */ (this.get(ol.MapProperty.VIEW));
+};
+
+
+/**
+ * Get the element that serves as the map viewport.
+ * @return {Element} Viewport.
+ * @api stable
+ */
+ol.Map.prototype.getViewport = function() {
+ return this.viewport_;
+};
+
+
+/**
+ * Get the element that serves as the container for overlays. Elements added to
+ * this container will let mousedown and touchstart events through to the map,
+ * so clicks and gestures on an overlay will trigger {@link ol.MapBrowserEvent}
+ * events.
+ * @return {!Element} The map's overlay container.
+ */
+ol.Map.prototype.getOverlayContainer = function() {
+ return this.overlayContainer_;
+};
+
+
+/**
+ * Get the element that serves as a container for overlays that don't allow
+ * event propagation. Elements added to this container won't let mousedown and
+ * touchstart events through to the map, so clicks and gestures on an overlay
+ * don't trigger any {@link ol.MapBrowserEvent}.
+ * @return {!Element} The map's overlay container that stops events.
+ */
+ol.Map.prototype.getOverlayContainerStopEvent = function() {
+ return this.overlayContainerStopEvent_;
+};
+
+
+/**
+ * @param {ol.Tile} tile Tile.
+ * @param {string} tileSourceKey Tile source key.
+ * @param {ol.Coordinate} tileCenter Tile center.
+ * @param {number} tileResolution Tile resolution.
+ * @return {number} Tile priority.
+ */
+ol.Map.prototype.getTilePriority = function(tile, tileSourceKey, tileCenter, tileResolution) {
+ // Filter out tiles at higher zoom levels than the current zoom level, or that
+ // are outside the visible extent.
+ var frameState = this.frameState_;
+ if (!frameState || !(tileSourceKey in frameState.wantedTiles)) {
+ return ol.structs.PriorityQueue.DROP;
+ }
+ var coordKey = tile.tileCoord.toString();
+ if (!frameState.wantedTiles[tileSourceKey][coordKey]) {
+ return ol.structs.PriorityQueue.DROP;
+ }
+ // Prioritize the highest zoom level tiles closest to the focus.
+ // Tiles at higher zoom levels are prioritized using Math.log(tileResolution).
+ // Within a zoom level, tiles are prioritized by the distance in pixels
+ // between the center of the tile and the focus. The factor of 65536 means
+ // that the prioritization should behave as desired for tiles up to
+ // 65536 * Math.log(2) = 45426 pixels from the focus.
+ var deltaX = tileCenter[0] - frameState.focus[0];
+ var deltaY = tileCenter[1] - frameState.focus[1];
+ return 65536 * Math.log(tileResolution) +
+ Math.sqrt(deltaX * deltaX + deltaY * deltaY) / tileResolution;
+};
+
+
+/**
+ * @param {Event} browserEvent Browser event.
+ * @param {string=} opt_type Type.
+ */
+ol.Map.prototype.handleBrowserEvent = function(browserEvent, opt_type) {
+ var type = opt_type || browserEvent.type;
+ var mapBrowserEvent = new ol.MapBrowserEvent(type, this, browserEvent);
+ this.handleMapBrowserEvent(mapBrowserEvent);
+};
+
+
+/**
+ * @param {ol.MapBrowserEvent} mapBrowserEvent The event to handle.
+ */
+ol.Map.prototype.handleMapBrowserEvent = function(mapBrowserEvent) {
+ if (!this.frameState_) {
+ // With no view defined, we cannot translate pixels into geographical
+ // coordinates so interactions cannot be used.
+ return;
+ }
+ this.focus_ = mapBrowserEvent.coordinate;
+ mapBrowserEvent.frameState = this.frameState_;
+ var interactions = this.getInteractions();
+ goog.asserts.assert(interactions !== undefined,
+ 'interactions should be defined');
+ var interactionsArray = interactions.getArray();
+ var i;
+ if (this.dispatchEvent(mapBrowserEvent) !== false) {
+ for (i = interactionsArray.length - 1; i >= 0; i--) {
+ var interaction = interactionsArray[i];
+ if (!interaction.getActive()) {
+ continue;
+ }
+ var cont = interaction.handleEvent(mapBrowserEvent);
+ if (!cont) {
+ break;
+ }
+ }
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.Map.prototype.handlePostRender = function() {
+
+ var frameState = this.frameState_;
+
+ // Manage the tile queue
+ // Image loads are expensive and a limited resource, so try to use them
+ // efficiently:
+ // * When the view is static we allow a large number of parallel tile loads
+ // to complete the frame as quickly as possible.
+ // * When animating or interacting, image loads can cause janks, so we reduce
+ // the maximum number of loads per frame and limit the number of parallel
+ // tile loads to remain reactive to view changes and to reduce the chance of
+ // loading tiles that will quickly disappear from view.
+ var tileQueue = this.tileQueue_;
+ if (!tileQueue.isEmpty()) {
+ var maxTotalLoading = 16;
+ var maxNewLoads = maxTotalLoading;
+ if (frameState) {
+ var hints = frameState.viewHints;
+ if (hints[ol.ViewHint.ANIMATING]) {
+ maxTotalLoading = this.loadTilesWhileAnimating_ ? 8 : 0;
+ maxNewLoads = 2;
+ }
+ if (hints[ol.ViewHint.INTERACTING]) {
+ maxTotalLoading = this.loadTilesWhileInteracting_ ? 8 : 0;
+ maxNewLoads = 2;
+ }
+ }
+ if (tileQueue.getTilesLoading() < maxTotalLoading) {
+ tileQueue.reprioritize(); // FIXME only call if view has changed
+ tileQueue.loadMoreTiles(maxTotalLoading, maxNewLoads);
+ }
+ }
+
+ var postRenderFunctions = this.postRenderFunctions_;
+ var i, ii;
+ for (i = 0, ii = postRenderFunctions.length; i < ii; ++i) {
+ postRenderFunctions[i](this, frameState);
+ }
+ postRenderFunctions.length = 0;
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleSizeChanged_ = function() {
+ this.render();
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleTargetChanged_ = function() {
+ // target may be undefined, null, a string or an Element.
+ // If it's a string we convert it to an Element before proceeding.
+ // If it's not now an Element we remove the viewport from the DOM.
+ // If it's an Element we append the viewport element to it.
+
+ var targetElement;
+ if (this.getTarget()) {
+ targetElement = this.getTargetElement();
+ goog.asserts.assert(targetElement !== null,
+ 'expects a non-null value for targetElement');
+ }
+
+ if (this.keyHandlerKeys_) {
+ for (var i = 0, ii = this.keyHandlerKeys_.length; i < ii; ++i) {
+ ol.events.unlistenByKey(this.keyHandlerKeys_[i]);
+ }
+ this.keyHandlerKeys_ = null;
+ }
+
+ if (!targetElement) {
+ ol.dom.removeNode(this.viewport_);
+ if (this.handleResize_ !== undefined) {
+ ol.global.removeEventListener(ol.events.EventType.RESIZE,
+ this.handleResize_, false);
+ this.handleResize_ = undefined;
+ }
+ } else {
+ targetElement.appendChild(this.viewport_);
+
+ var keyboardEventTarget = !this.keyboardEventTarget_ ?
+ targetElement : this.keyboardEventTarget_;
+ this.keyHandlerKeys_ = [
+ ol.events.listen(keyboardEventTarget, ol.events.EventType.KEYDOWN,
+ this.handleBrowserEvent, this),
+ ol.events.listen(keyboardEventTarget, ol.events.EventType.KEYPRESS,
+ this.handleBrowserEvent, this)
+ ];
+
+ if (!this.handleResize_) {
+ this.handleResize_ = this.updateSize.bind(this);
+ ol.global.addEventListener(ol.events.EventType.RESIZE,
+ this.handleResize_, false);
+ }
+ }
+
+ this.updateSize();
+ // updateSize calls setSize, so no need to call this.render
+ // ourselves here.
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleTileChange_ = function() {
+ this.render();
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleViewPropertyChanged_ = function() {
+ this.render();
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleViewChanged_ = function() {
+ if (this.viewPropertyListenerKey_) {
+ ol.events.unlistenByKey(this.viewPropertyListenerKey_);
+ this.viewPropertyListenerKey_ = null;
+ }
+ var view = this.getView();
+ if (view) {
+ this.viewPropertyListenerKey_ = ol.events.listen(
+ view, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleViewPropertyChanged_, this);
+ }
+ this.render();
+};
+
+
+/**
+ * @param {ol.events.Event} event Event.
+ * @private
+ */
+ol.Map.prototype.handleLayerGroupMemberChanged_ = function(event) {
+ goog.asserts.assertInstanceof(event, ol.events.Event,
+ 'event should be an Event');
+ this.render();
+};
+
+
+/**
+ * @param {ol.ObjectEvent} event Event.
+ * @private
+ */
+ol.Map.prototype.handleLayerGroupPropertyChanged_ = function(event) {
+ goog.asserts.assertInstanceof(event, ol.ObjectEvent,
+ 'event should be an ol.ObjectEvent');
+ this.render();
+};
+
+
+/**
+ * @private
+ */
+ol.Map.prototype.handleLayerGroupChanged_ = function() {
+ if (this.layerGroupPropertyListenerKeys_) {
+ this.layerGroupPropertyListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.layerGroupPropertyListenerKeys_ = null;
+ }
+ var layerGroup = this.getLayerGroup();
+ if (layerGroup) {
+ this.layerGroupPropertyListenerKeys_ = [
+ ol.events.listen(
+ layerGroup, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleLayerGroupPropertyChanged_, this),
+ ol.events.listen(
+ layerGroup, ol.events.EventType.CHANGE,
+ this.handleLayerGroupMemberChanged_, this)
+ ];
+ }
+ this.render();
+};
+
+
+/**
+ * @return {boolean} Is rendered.
+ */
+ol.Map.prototype.isRendered = function() {
+ return !!this.frameState_;
+};
+
+
+/**
+ * Requests an immediate render in a synchronous manner.
+ * @api stable
+ */
+ol.Map.prototype.renderSync = function() {
+ if (this.animationDelayKey_) {
+ ol.global.cancelAnimationFrame(this.animationDelayKey_);
+ }
+ this.animationDelay_();
+};
+
+
+/**
+ * Request a map rendering (at the next animation frame).
+ * @api stable
+ */
+ol.Map.prototype.render = function() {
+ if (this.animationDelayKey_ === undefined) {
+ this.animationDelayKey_ = ol.global.requestAnimationFrame(
+ this.animationDelay_);
+ }
+};
+
+
+/**
+ * Remove the given control from the map.
+ * @param {ol.control.Control} control Control.
+ * @return {ol.control.Control|undefined} The removed control (or undefined
+ * if the control was not found).
+ * @api stable
+ */
+ol.Map.prototype.removeControl = function(control) {
+ var controls = this.getControls();
+ goog.asserts.assert(controls !== undefined, 'controls should be defined');
+ return controls.remove(control);
+};
+
+
+/**
+ * Remove the given interaction from the map.
+ * @param {ol.interaction.Interaction} interaction Interaction to remove.
+ * @return {ol.interaction.Interaction|undefined} The removed interaction (or
+ * undefined if the interaction was not found).
+ * @api stable
+ */
+ol.Map.prototype.removeInteraction = function(interaction) {
+ var interactions = this.getInteractions();
+ goog.asserts.assert(interactions !== undefined,
+ 'interactions should be defined');
+ return interactions.remove(interaction);
+};
+
+
+/**
+ * Removes the given layer from the map.
+ * @param {ol.layer.Base} layer Layer.
+ * @return {ol.layer.Base|undefined} The removed layer (or undefined if the
+ * layer was not found).
+ * @api stable
+ */
+ol.Map.prototype.removeLayer = function(layer) {
+ var layers = this.getLayerGroup().getLayers();
+ return layers.remove(layer);
+};
+
+
+/**
+ * Remove the given overlay from the map.
+ * @param {ol.Overlay} overlay Overlay.
+ * @return {ol.Overlay|undefined} The removed overlay (or undefined
+ * if the overlay was not found).
+ * @api stable
+ */
+ol.Map.prototype.removeOverlay = function(overlay) {
+ var overlays = this.getOverlays();
+ goog.asserts.assert(overlays !== undefined, 'overlays should be defined');
+ return overlays.remove(overlay);
+};
+
+
+/**
+ * @param {number} time Time.
+ * @private
+ */
+ol.Map.prototype.renderFrame_ = function(time) {
+
+ var i, ii, viewState;
+
+ var size = this.getSize();
+ var view = this.getView();
+ var extent = ol.extent.createEmpty();
+ /** @type {?olx.FrameState} */
+ var frameState = null;
+ if (size !== undefined && ol.size.hasArea(size) && view && view.isDef()) {
+ var viewHints = view.getHints(this.frameState_ ? this.frameState_.viewHints : undefined);
+ var layerStatesArray = this.getLayerGroup().getLayerStatesArray();
+ var layerStates = {};
+ for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
+ layerStates[goog.getUid(layerStatesArray[i].layer)] = layerStatesArray[i];
+ }
+ viewState = view.getState();
+ frameState = /** @type {olx.FrameState} */ ({
+ animate: false,
+ attributions: {},
+ coordinateToPixelMatrix: this.coordinateToPixelMatrix_,
+ extent: extent,
+ focus: !this.focus_ ? viewState.center : this.focus_,
+ index: this.frameIndex_++,
+ layerStates: layerStates,
+ layerStatesArray: layerStatesArray,
+ logos: ol.object.assign({}, this.logos_),
+ pixelRatio: this.pixelRatio_,
+ pixelToCoordinateMatrix: this.pixelToCoordinateMatrix_,
+ postRenderFunctions: [],
+ size: size,
+ skippedFeatureUids: this.skippedFeatureUids_,
+ tileQueue: this.tileQueue_,
+ time: time,
+ usedTiles: {},
+ viewState: viewState,
+ viewHints: viewHints,
+ wantedTiles: {}
+ });
+ }
+
+ if (frameState) {
+ var preRenderFunctions = this.preRenderFunctions_;
+ var n = 0, preRenderFunction;
+ for (i = 0, ii = preRenderFunctions.length; i < ii; ++i) {
+ preRenderFunction = preRenderFunctions[i];
+ if (preRenderFunction(this, frameState)) {
+ preRenderFunctions[n++] = preRenderFunction;
+ }
+ }
+ preRenderFunctions.length = n;
+
+ frameState.extent = ol.extent.getForViewAndSize(viewState.center,
+ viewState.resolution, viewState.rotation, frameState.size, extent);
+ }
+
+ this.frameState_ = frameState;
+ this.renderer_.renderFrame(frameState);
+
+ if (frameState) {
+ if (frameState.animate) {
+ this.render();
+ }
+ Array.prototype.push.apply(
+ this.postRenderFunctions_, frameState.postRenderFunctions);
+
+ var idle = this.preRenderFunctions_.length === 0 &&
+ !frameState.viewHints[ol.ViewHint.ANIMATING] &&
+ !frameState.viewHints[ol.ViewHint.INTERACTING] &&
+ !ol.extent.equals(frameState.extent, this.previousExtent_);
+
+ if (idle) {
+ this.dispatchEvent(
+ new ol.MapEvent(ol.MapEventType.MOVEEND, this, frameState));
+ ol.extent.clone(frameState.extent, this.previousExtent_);
+ }
+ }
+
+ this.dispatchEvent(
+ new ol.MapEvent(ol.MapEventType.POSTRENDER, this, frameState));
+
+ goog.async.nextTick(this.handlePostRender, this);
+
+};
+
+
+/**
+ * Sets the layergroup of this map.
+ * @param {ol.layer.Group} layerGroup A layer group containing the layers in
+ * this map.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.setLayerGroup = function(layerGroup) {
+ this.set(ol.MapProperty.LAYERGROUP, layerGroup);
+};
+
+
+/**
+ * Set the size of this map.
+ * @param {ol.Size|undefined} size The size in pixels of the map in the DOM.
+ * @observable
+ * @api
+ */
+ol.Map.prototype.setSize = function(size) {
+ this.set(ol.MapProperty.SIZE, size);
+};
+
+
+/**
+ * Set the target element to render this map into.
+ * @param {Element|string|undefined} target The Element or id of the Element
+ * that the map is rendered in.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.setTarget = function(target) {
+ this.set(ol.MapProperty.TARGET, target);
+};
+
+
+/**
+ * Set the view for this map.
+ * @param {ol.View} view The view that controls this map.
+ * @observable
+ * @api stable
+ */
+ol.Map.prototype.setView = function(view) {
+ this.set(ol.MapProperty.VIEW, view);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ */
+ol.Map.prototype.skipFeature = function(feature) {
+ var featureUid = goog.getUid(feature).toString();
+ this.skippedFeatureUids_[featureUid] = true;
+ this.render();
+};
+
+
+/**
+ * Force a recalculation of the map viewport size. This should be called when
+ * third-party code changes the size of the map viewport.
+ * @api stable
+ */
+ol.Map.prototype.updateSize = function() {
+ var targetElement = this.getTargetElement();
+
+ if (!targetElement) {
+ this.setSize(undefined);
+ } else {
+ var computedStyle = ol.global.getComputedStyle(targetElement);
+ this.setSize([
+ targetElement.offsetWidth -
+ parseFloat(computedStyle['borderLeftWidth']) -
+ parseFloat(computedStyle['paddingLeft']) -
+ parseFloat(computedStyle['paddingRight']) -
+ parseFloat(computedStyle['borderRightWidth']),
+ targetElement.offsetHeight -
+ parseFloat(computedStyle['borderTopWidth']) -
+ parseFloat(computedStyle['paddingTop']) -
+ parseFloat(computedStyle['paddingBottom']) -
+ parseFloat(computedStyle['borderBottomWidth'])
+ ]);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ */
+ol.Map.prototype.unskipFeature = function(feature) {
+ var featureUid = goog.getUid(feature).toString();
+ delete this.skippedFeatureUids_[featureUid];
+ this.render();
+};
+
+
+/**
+ * @param {olx.MapOptions} options Map options.
+ * @return {ol.MapOptionsInternal} Internal map options.
+ */
+ol.Map.createOptionsInternal = function(options) {
+
+ /**
+ * @type {Element|Document}
+ */
+ var keyboardEventTarget = null;
+ if (options.keyboardEventTarget !== undefined) {
+ keyboardEventTarget = typeof options.keyboardEventTarget === 'string' ?
+ document.getElementById(options.keyboardEventTarget) :
+ options.keyboardEventTarget;
+ }
+
+ /**
+ * @type {Object.<string, *>}
+ */
+ var values = {};
+
+ var logos = {};
+ if (options.logo === undefined ||
+ (typeof options.logo === 'boolean' && options.logo)) {
+ logos[ol.OL3_LOGO_URL] = ol.OL3_URL;
+ } else {
+ var logo = options.logo;
+ if (typeof logo === 'string') {
+ logos[logo] = '';
+ } else if (logo instanceof HTMLElement) {
+ logos[goog.getUid(logo).toString()] = logo;
+ } else if (goog.isObject(logo)) {
+ goog.asserts.assertString(logo.href, 'logo.href should be a string');
+ goog.asserts.assertString(logo.src, 'logo.src should be a string');
+ logos[logo.src] = logo.href;
+ }
+ }
+
+ var layerGroup = (options.layers instanceof ol.layer.Group) ?
+ options.layers : new ol.layer.Group({layers: options.layers});
+ values[ol.MapProperty.LAYERGROUP] = layerGroup;
+
+ values[ol.MapProperty.TARGET] = options.target;
+
+ values[ol.MapProperty.VIEW] = options.view !== undefined ?
+ options.view : new ol.View();
+
+ /**
+ * @type {function(new: ol.renderer.Map, Element, ol.Map)}
+ */
+ var rendererConstructor = ol.renderer.Map;
+
+ /**
+ * @type {Array.<ol.RendererType>}
+ */
+ var rendererTypes;
+ if (options.renderer !== undefined) {
+ if (Array.isArray(options.renderer)) {
+ rendererTypes = options.renderer;
+ } else if (typeof options.renderer === 'string') {
+ rendererTypes = [options.renderer];
+ } else {
+ goog.asserts.fail('Incorrect format for renderer option');
+ }
+ } else {
+ rendererTypes = ol.DEFAULT_RENDERER_TYPES;
+ }
+
+ var i, ii;
+ for (i = 0, ii = rendererTypes.length; i < ii; ++i) {
+ /** @type {ol.RendererType} */
+ var rendererType = rendererTypes[i];
+ if (ol.ENABLE_CANVAS && rendererType == ol.RendererType.CANVAS) {
+ if (ol.has.CANVAS) {
+ rendererConstructor = ol.renderer.canvas.Map;
+ break;
+ }
+ } else if (ol.ENABLE_DOM && rendererType == ol.RendererType.DOM) {
+ if (ol.has.DOM) {
+ rendererConstructor = ol.renderer.dom.Map;
+ break;
+ }
+ } else if (ol.ENABLE_WEBGL && rendererType == ol.RendererType.WEBGL) {
+ if (ol.has.WEBGL) {
+ rendererConstructor = ol.renderer.webgl.Map;
+ break;
+ }
+ }
+ }
+
+ var controls;
+ if (options.controls !== undefined) {
+ if (Array.isArray(options.controls)) {
+ controls = new ol.Collection(options.controls.slice());
+ } else {
+ goog.asserts.assertInstanceof(options.controls, ol.Collection,
+ 'options.controls should be an ol.Collection');
+ controls = options.controls;
+ }
+ } else {
+ controls = ol.control.defaults();
+ }
+
+ var interactions;
+ if (options.interactions !== undefined) {
+ if (Array.isArray(options.interactions)) {
+ interactions = new ol.Collection(options.interactions.slice());
+ } else {
+ goog.asserts.assertInstanceof(options.interactions, ol.Collection,
+ 'options.interactions should be an ol.Collection');
+ interactions = options.interactions;
+ }
+ } else {
+ interactions = ol.interaction.defaults();
+ }
+
+ var overlays;
+ if (options.overlays !== undefined) {
+ if (Array.isArray(options.overlays)) {
+ overlays = new ol.Collection(options.overlays.slice());
+ } else {
+ goog.asserts.assertInstanceof(options.overlays, ol.Collection,
+ 'options.overlays should be an ol.Collection');
+ overlays = options.overlays;
+ }
+ } else {
+ overlays = new ol.Collection();
+ }
+
+ return {
+ controls: controls,
+ interactions: interactions,
+ keyboardEventTarget: keyboardEventTarget,
+ logos: logos,
+ overlays: overlays,
+ rendererConstructor: rendererConstructor,
+ values: values
+ };
+
+};
+
+
+ol.proj.common.add();
+
+goog.provide('ol.Overlay');
+goog.provide('ol.OverlayPositioning');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.Map');
+goog.require('ol.MapEventType');
+goog.require('ol.Object');
+goog.require('ol.animation');
+goog.require('ol.dom');
+goog.require('ol.extent');
+
+
+/**
+ * @enum {string}
+ */
+ol.OverlayProperty = {
+ ELEMENT: 'element',
+ MAP: 'map',
+ OFFSET: 'offset',
+ POSITION: 'position',
+ POSITIONING: 'positioning'
+};
+
+
+/**
+ * Overlay position: `'bottom-left'`, `'bottom-center'`, `'bottom-right'`,
+ * `'center-left'`, `'center-center'`, `'center-right'`, `'top-left'`,
+ * `'top-center'`, `'top-right'`
+ * @enum {string}
+ */
+ol.OverlayPositioning = {
+ BOTTOM_LEFT: 'bottom-left',
+ BOTTOM_CENTER: 'bottom-center',
+ BOTTOM_RIGHT: 'bottom-right',
+ CENTER_LEFT: 'center-left',
+ CENTER_CENTER: 'center-center',
+ CENTER_RIGHT: 'center-right',
+ TOP_LEFT: 'top-left',
+ TOP_CENTER: 'top-center',
+ TOP_RIGHT: 'top-right'
+};
+
+
+/**
+ * @classdesc
+ * An element to be displayed over the map and attached to a single map
+ * location. Like {@link ol.control.Control}, Overlays are visible widgets.
+ * Unlike Controls, they are not in a fixed position on the screen, but are tied
+ * to a geographical coordinate, so panning the map will move an Overlay but not
+ * a Control.
+ *
+ * Example:
+ *
+ * var popup = new ol.Overlay({
+ * element: document.getElementById('popup')
+ * });
+ * popup.setPosition(coordinate);
+ * map.addOverlay(popup);
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.OverlayOptions} options Overlay options.
+ * @api stable
+ */
+ol.Overlay = function(options) {
+
+ ol.Object.call(this);
+
+ /**
+ * @private
+ * @type {number|string|undefined}
+ */
+ this.id_ = options.id;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.insertFirst_ = options.insertFirst !== undefined ?
+ options.insertFirst : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.stopEvent_ = options.stopEvent !== undefined ? options.stopEvent : true;
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.element_ = document.createElement('DIV');
+ this.element_.className = 'ol-overlay-container';
+ this.element_.style.position = 'absolute';
+
+ /**
+ * @protected
+ * @type {boolean}
+ */
+ this.autoPan = options.autoPan !== undefined ? options.autoPan : false;
+
+ /**
+ * @private
+ * @type {olx.animation.PanOptions}
+ */
+ this.autoPanAnimation_ = options.autoPanAnimation !== undefined ?
+ options.autoPanAnimation : /** @type {olx.animation.PanOptions} */ ({});
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.autoPanMargin_ = options.autoPanMargin !== undefined ?
+ options.autoPanMargin : 20;
+
+ /**
+ * @private
+ * @type {{bottom_: string,
+ * left_: string,
+ * right_: string,
+ * top_: string,
+ * visible: boolean}}
+ */
+ this.rendered_ = {
+ bottom_: '',
+ left_: '',
+ right_: '',
+ top_: '',
+ visible: true
+ };
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.mapPostrenderListenerKey_ = null;
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.OverlayProperty.ELEMENT),
+ this.handleElementChanged, this);
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.OverlayProperty.MAP),
+ this.handleMapChanged, this);
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.OverlayProperty.OFFSET),
+ this.handleOffsetChanged, this);
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.OverlayProperty.POSITION),
+ this.handlePositionChanged, this);
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.OverlayProperty.POSITIONING),
+ this.handlePositioningChanged, this);
+
+ if (options.element !== undefined) {
+ this.setElement(options.element);
+ }
+
+ this.setOffset(options.offset !== undefined ? options.offset : [0, 0]);
+
+ this.setPositioning(options.positioning !== undefined ?
+ /** @type {ol.OverlayPositioning} */ (options.positioning) :
+ ol.OverlayPositioning.TOP_LEFT);
+
+ if (options.position !== undefined) {
+ this.setPosition(options.position);
+ }
+
+};
+ol.inherits(ol.Overlay, ol.Object);
+
+
+/**
+ * Get the DOM element of this overlay.
+ * @return {Element|undefined} The Element containing the overlay.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.getElement = function() {
+ return /** @type {Element|undefined} */ (
+ this.get(ol.OverlayProperty.ELEMENT));
+};
+
+
+/**
+ * Get the overlay identifier which is set on constructor.
+ * @return {number|string|undefined} Id.
+ * @api
+ */
+ol.Overlay.prototype.getId = function() {
+ return this.id_;
+};
+
+
+/**
+ * Get the map associated with this overlay.
+ * @return {ol.Map|undefined} The map that the overlay is part of.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.getMap = function() {
+ return /** @type {ol.Map|undefined} */ (
+ this.get(ol.OverlayProperty.MAP));
+};
+
+
+/**
+ * Get the offset of this overlay.
+ * @return {Array.<number>} The offset.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.getOffset = function() {
+ return /** @type {Array.<number>} */ (
+ this.get(ol.OverlayProperty.OFFSET));
+};
+
+
+/**
+ * Get the current position of this overlay.
+ * @return {ol.Coordinate|undefined} The spatial point that the overlay is
+ * anchored at.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.getPosition = function() {
+ return /** @type {ol.Coordinate|undefined} */ (
+ this.get(ol.OverlayProperty.POSITION));
+};
+
+
+/**
+ * Get the current positioning of this overlay.
+ * @return {ol.OverlayPositioning} How the overlay is positioned
+ * relative to its point on the map.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.getPositioning = function() {
+ return /** @type {ol.OverlayPositioning} */ (
+ this.get(ol.OverlayProperty.POSITIONING));
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.handleElementChanged = function() {
+ ol.dom.removeChildren(this.element_);
+ var element = this.getElement();
+ if (element) {
+ this.element_.appendChild(element);
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.handleMapChanged = function() {
+ if (this.mapPostrenderListenerKey_) {
+ ol.dom.removeNode(this.element_);
+ ol.events.unlistenByKey(this.mapPostrenderListenerKey_);
+ this.mapPostrenderListenerKey_ = null;
+ }
+ var map = this.getMap();
+ if (map) {
+ this.mapPostrenderListenerKey_ = ol.events.listen(map,
+ ol.MapEventType.POSTRENDER, this.render, this);
+ this.updatePixelPosition();
+ var container = this.stopEvent_ ?
+ map.getOverlayContainerStopEvent() : map.getOverlayContainer();
+ if (this.insertFirst_) {
+ container.insertBefore(this.element_, container.childNodes[0] || null);
+ } else {
+ container.appendChild(this.element_);
+ }
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.render = function() {
+ this.updatePixelPosition();
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.handleOffsetChanged = function() {
+ this.updatePixelPosition();
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.handlePositionChanged = function() {
+ this.updatePixelPosition();
+ if (this.get(ol.OverlayProperty.POSITION) !== undefined && this.autoPan) {
+ this.panIntoView_();
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.Overlay.prototype.handlePositioningChanged = function() {
+ this.updatePixelPosition();
+};
+
+
+/**
+ * Set the DOM element to be associated with this overlay.
+ * @param {Element|undefined} element The Element containing the overlay.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.setElement = function(element) {
+ this.set(ol.OverlayProperty.ELEMENT, element);
+};
+
+
+/**
+ * Set the map to be associated with this overlay.
+ * @param {ol.Map|undefined} map The map that the overlay is part of.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.setMap = function(map) {
+ this.set(ol.OverlayProperty.MAP, map);
+};
+
+
+/**
+ * Set the offset for this overlay.
+ * @param {Array.<number>} offset Offset.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.setOffset = function(offset) {
+ this.set(ol.OverlayProperty.OFFSET, offset);
+};
+
+
+/**
+ * Set the position for this overlay. If the position is `undefined` the
+ * overlay is hidden.
+ * @param {ol.Coordinate|undefined} position The spatial point that the overlay
+ * is anchored at.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.setPosition = function(position) {
+ this.set(ol.OverlayProperty.POSITION, position);
+};
+
+
+/**
+ * Pan the map so that the overlay is entirely visible in the current viewport
+ * (if necessary).
+ * @private
+ */
+ol.Overlay.prototype.panIntoView_ = function() {
+ goog.asserts.assert(this.autoPan, 'this.autoPan should be true');
+ var map = this.getMap();
+
+ if (map === undefined || !map.getTargetElement()) {
+ return;
+ }
+
+ var mapRect = this.getRect_(map.getTargetElement(), map.getSize());
+ var element = this.getElement();
+ goog.asserts.assert(element, 'element should be defined');
+ var overlayRect = this.getRect_(element,
+ [ol.dom.outerWidth(element), ol.dom.outerHeight(element)]);
+
+ var margin = this.autoPanMargin_;
+ if (!ol.extent.containsExtent(mapRect, overlayRect)) {
+ // the overlay is not completely inside the viewport, so pan the map
+ var offsetLeft = overlayRect[0] - mapRect[0];
+ var offsetRight = mapRect[2] - overlayRect[2];
+ var offsetTop = overlayRect[1] - mapRect[1];
+ var offsetBottom = mapRect[3] - overlayRect[3];
+
+ var delta = [0, 0];
+ if (offsetLeft < 0) {
+ // move map to the left
+ delta[0] = offsetLeft - margin;
+ } else if (offsetRight < 0) {
+ // move map to the right
+ delta[0] = Math.abs(offsetRight) + margin;
+ }
+ if (offsetTop < 0) {
+ // move map up
+ delta[1] = offsetTop - margin;
+ } else if (offsetBottom < 0) {
+ // move map down
+ delta[1] = Math.abs(offsetBottom) + margin;
+ }
+
+ if (delta[0] !== 0 || delta[1] !== 0) {
+ var center = map.getView().getCenter();
+ goog.asserts.assert(center !== undefined, 'center should be defined');
+ var centerPx = map.getPixelFromCoordinate(center);
+ var newCenterPx = [
+ centerPx[0] + delta[0],
+ centerPx[1] + delta[1]
+ ];
+
+ if (this.autoPanAnimation_) {
+ this.autoPanAnimation_.source = center;
+ map.beforeRender(ol.animation.pan(this.autoPanAnimation_));
+ }
+ map.getView().setCenter(map.getCoordinateFromPixel(newCenterPx));
+ }
+ }
+};
+
+
+/**
+ * Get the extent of an element relative to the document
+ * @param {Element|undefined} element The element.
+ * @param {ol.Size|undefined} size The size of the element.
+ * @return {ol.Extent} The extent.
+ * @private
+ */
+ol.Overlay.prototype.getRect_ = function(element, size) {
+ goog.asserts.assert(element, 'element should be defined');
+ goog.asserts.assert(size !== undefined, 'size should be defined');
+
+ var box = element.getBoundingClientRect();
+ var offsetX = box.left + ol.global.pageXOffset;
+ var offsetY = box.top + ol.global.pageYOffset;
+ return [
+ offsetX,
+ offsetY,
+ offsetX + size[0],
+ offsetY + size[1]
+ ];
+};
+
+
+/**
+ * Set the positioning for this overlay.
+ * @param {ol.OverlayPositioning} positioning how the overlay is
+ * positioned relative to its point on the map.
+ * @observable
+ * @api stable
+ */
+ol.Overlay.prototype.setPositioning = function(positioning) {
+ this.set(ol.OverlayProperty.POSITIONING, positioning);
+};
+
+
+/**
+ * Modify the visibility of the element.
+ * @param {boolean} visible Element visibility.
+ * @protected
+ */
+ol.Overlay.prototype.setVisible = function(visible) {
+ if (this.rendered_.visible !== visible) {
+ this.element_.style.display = visible ? '' : 'none';
+ this.rendered_.visible = visible;
+ }
+};
+
+
+/**
+ * Update pixel position.
+ * @protected
+ */
+ol.Overlay.prototype.updatePixelPosition = function() {
+ var map = this.getMap();
+ var position = this.getPosition();
+ if (map === undefined || !map.isRendered() || position === undefined) {
+ this.setVisible(false);
+ return;
+ }
+
+ var pixel = map.getPixelFromCoordinate(position);
+ var mapSize = map.getSize();
+ this.updateRenderedPosition(pixel, mapSize);
+};
+
+
+/**
+ * @param {ol.Pixel} pixel The pixel location.
+ * @param {ol.Size|undefined} mapSize The map size.
+ * @protected
+ */
+ol.Overlay.prototype.updateRenderedPosition = function(pixel, mapSize) {
+ goog.asserts.assert(pixel, 'pixel should not be null');
+ goog.asserts.assert(mapSize !== undefined, 'mapSize should be defined');
+ var style = this.element_.style;
+ var offset = this.getOffset();
+ goog.asserts.assert(Array.isArray(offset), 'offset should be an array');
+
+ var positioning = this.getPositioning();
+ goog.asserts.assert(positioning !== undefined,
+ 'positioning should be defined');
+
+ var offsetX = offset[0];
+ var offsetY = offset[1];
+ if (positioning == ol.OverlayPositioning.BOTTOM_RIGHT ||
+ positioning == ol.OverlayPositioning.CENTER_RIGHT ||
+ positioning == ol.OverlayPositioning.TOP_RIGHT) {
+ if (this.rendered_.left_ !== '') {
+ this.rendered_.left_ = style.left = '';
+ }
+ var right = Math.round(mapSize[0] - pixel[0] - offsetX) + 'px';
+ if (this.rendered_.right_ != right) {
+ this.rendered_.right_ = style.right = right;
+ }
+ } else {
+ if (this.rendered_.right_ !== '') {
+ this.rendered_.right_ = style.right = '';
+ }
+ if (positioning == ol.OverlayPositioning.BOTTOM_CENTER ||
+ positioning == ol.OverlayPositioning.CENTER_CENTER ||
+ positioning == ol.OverlayPositioning.TOP_CENTER) {
+ offsetX -= this.element_.offsetWidth / 2;
+ }
+ var left = Math.round(pixel[0] + offsetX) + 'px';
+ if (this.rendered_.left_ != left) {
+ this.rendered_.left_ = style.left = left;
+ }
+ }
+ if (positioning == ol.OverlayPositioning.BOTTOM_LEFT ||
+ positioning == ol.OverlayPositioning.BOTTOM_CENTER ||
+ positioning == ol.OverlayPositioning.BOTTOM_RIGHT) {
+ if (this.rendered_.top_ !== '') {
+ this.rendered_.top_ = style.top = '';
+ }
+ var bottom = Math.round(mapSize[1] - pixel[1] - offsetY) + 'px';
+ if (this.rendered_.bottom_ != bottom) {
+ this.rendered_.bottom_ = style.bottom = bottom;
+ }
+ } else {
+ if (this.rendered_.bottom_ !== '') {
+ this.rendered_.bottom_ = style.bottom = '';
+ }
+ if (positioning == ol.OverlayPositioning.CENTER_LEFT ||
+ positioning == ol.OverlayPositioning.CENTER_CENTER ||
+ positioning == ol.OverlayPositioning.CENTER_RIGHT) {
+ offsetY -= this.element_.offsetHeight / 2;
+ }
+ var top = Math.round(pixel[1] + offsetY) + 'px';
+ if (this.rendered_.top_ != top) {
+ this.rendered_.top_ = style.top = top;
+ }
+ }
+
+ this.setVisible(true);
+};
+
+goog.provide('ol.control.OverviewMap');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.Map');
+goog.require('ol.MapEventType');
+goog.require('ol.Object');
+goog.require('ol.ObjectEventType');
+goog.require('ol.Overlay');
+goog.require('ol.OverlayPositioning');
+goog.require('ol.View');
+goog.require('ol.ViewProperty');
+goog.require('ol.control.Control');
+goog.require('ol.coordinate');
+goog.require('ol.css');
+goog.require('ol.dom');
+goog.require('ol.extent');
+
+
+/**
+ * Create a new control with a map acting as an overview map for an other
+ * defined map.
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.OverviewMapOptions=} opt_options OverviewMap options.
+ * @api
+ */
+ol.control.OverviewMap = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.collapsed_ = options.collapsed !== undefined ? options.collapsed : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.collapsible_ = options.collapsible !== undefined ?
+ options.collapsible : true;
+
+ if (!this.collapsible_) {
+ this.collapsed_ = false;
+ }
+
+ var className = options.className !== undefined ? options.className : 'ol-overviewmap';
+
+ var tipLabel = options.tipLabel !== undefined ? options.tipLabel : 'Overview map';
+
+ var collapseLabel = options.collapseLabel !== undefined ? options.collapseLabel : '\u00AB';
+
+ if (typeof collapseLabel === 'string') {
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.collapseLabel_ = document.createElement('span');
+ this.collapseLabel_.textContent = collapseLabel;
+ } else {
+ this.collapseLabel_ = collapseLabel;
+ }
+
+ var label = options.label !== undefined ? options.label : '\u00BB';
+
+
+ if (typeof label === 'string') {
+ /**
+ * @private
+ * @type {Node}
+ */
+ this.label_ = document.createElement('span');
+ this.label_.textContent = label;
+ } else {
+ this.label_ = label;
+ }
+
+ var activeLabel = (this.collapsible_ && !this.collapsed_) ?
+ this.collapseLabel_ : this.label_;
+ var button = document.createElement('button');
+ button.setAttribute('type', 'button');
+ button.title = tipLabel;
+ button.appendChild(activeLabel);
+
+ ol.events.listen(button, ol.events.EventType.CLICK,
+ this.handleClick_, this);
+
+ var ovmapDiv = document.createElement('DIV');
+ ovmapDiv.className = 'ol-overviewmap-map';
+
+ /**
+ * @type {ol.Map}
+ * @private
+ */
+ this.ovmap_ = new ol.Map({
+ controls: new ol.Collection(),
+ interactions: new ol.Collection(),
+ target: ovmapDiv,
+ view: options.view
+ });
+ var ovmap = this.ovmap_;
+
+ if (options.layers) {
+ options.layers.forEach(
+ /**
+ * @param {ol.layer.Layer} layer Layer.
+ */
+ function(layer) {
+ ovmap.addLayer(layer);
+ }, this);
+ }
+
+ var box = document.createElement('DIV');
+ box.className = 'ol-overviewmap-box';
+ box.style.boxSizing = 'border-box';
+
+ /**
+ * @type {ol.Overlay}
+ * @private
+ */
+ this.boxOverlay_ = new ol.Overlay({
+ position: [0, 0],
+ positioning: ol.OverlayPositioning.BOTTOM_LEFT,
+ element: box
+ });
+ this.ovmap_.addOverlay(this.boxOverlay_);
+
+ var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
+ ol.css.CLASS_CONTROL +
+ (this.collapsed_ && this.collapsible_ ? ' ol-collapsed' : '') +
+ (this.collapsible_ ? '' : ' ol-uncollapsible');
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(ovmapDiv);
+ element.appendChild(button);
+
+ var render = options.render ? options.render : ol.control.OverviewMap.render;
+
+ ol.control.Control.call(this, {
+ element: element,
+ render: render,
+ target: options.target
+ });
+};
+ol.inherits(ol.control.OverviewMap, ol.control.Control);
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.control.OverviewMap.prototype.setMap = function(map) {
+ var oldMap = this.getMap();
+ if (map === oldMap) {
+ return;
+ }
+ if (oldMap) {
+ var oldView = oldMap.getView();
+ if (oldView) {
+ this.unbindView_(oldView);
+ }
+ }
+ ol.control.Control.prototype.setMap.call(this, map);
+
+ if (map) {
+ this.listenerKeys.push(ol.events.listen(
+ map, ol.ObjectEventType.PROPERTYCHANGE,
+ this.handleMapPropertyChange_, this));
+
+ // TODO: to really support map switching, this would need to be reworked
+ if (this.ovmap_.getLayers().getLength() === 0) {
+ this.ovmap_.setLayerGroup(map.getLayerGroup());
+ }
+
+ var view = map.getView();
+ if (view) {
+ this.bindView_(view);
+ if (view.isDef()) {
+ this.ovmap_.updateSize();
+ this.resetExtent_();
+ }
+ }
+ }
+};
+
+
+/**
+ * Handle map property changes. This only deals with changes to the map's view.
+ * @param {ol.ObjectEvent} event The propertychange event.
+ * @private
+ */
+ol.control.OverviewMap.prototype.handleMapPropertyChange_ = function(event) {
+ if (event.key === ol.MapProperty.VIEW) {
+ var oldView = /** @type {ol.View} */ (event.oldValue);
+ if (oldView) {
+ this.unbindView_(oldView);
+ }
+ var newView = this.getMap().getView();
+ this.bindView_(newView);
+ }
+};
+
+
+/**
+ * Register listeners for view property changes.
+ * @param {ol.View} view The view.
+ * @private
+ */
+ol.control.OverviewMap.prototype.bindView_ = function(view) {
+ ol.events.listen(view,
+ ol.Object.getChangeEventType(ol.ViewProperty.ROTATION),
+ this.handleRotationChanged_, this);
+};
+
+
+/**
+ * Unregister listeners for view property changes.
+ * @param {ol.View} view The view.
+ * @private
+ */
+ol.control.OverviewMap.prototype.unbindView_ = function(view) {
+ ol.events.unlisten(view,
+ ol.Object.getChangeEventType(ol.ViewProperty.ROTATION),
+ this.handleRotationChanged_, this);
+};
+
+
+/**
+ * Handle rotation changes to the main map.
+ * TODO: This should rotate the extent rectrangle instead of the
+ * overview map's view.
+ * @private
+ */
+ol.control.OverviewMap.prototype.handleRotationChanged_ = function() {
+ this.ovmap_.getView().setRotation(this.getMap().getView().getRotation());
+};
+
+
+/**
+ * Update the overview map element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.OverviewMap}
+ * @api
+ */
+ol.control.OverviewMap.render = function(mapEvent) {
+ this.validateExtent_();
+ this.updateBox_();
+};
+
+
+/**
+ * Reset the overview map extent if the box size (width or
+ * height) is less than the size of the overview map size times minRatio
+ * or is greater than the size of the overview size times maxRatio.
+ *
+ * If the map extent was not reset, the box size can fits in the defined
+ * ratio sizes. This method then checks if is contained inside the overview
+ * map current extent. If not, recenter the overview map to the current
+ * main map center location.
+ * @private
+ */
+ol.control.OverviewMap.prototype.validateExtent_ = function() {
+ var map = this.getMap();
+ var ovmap = this.ovmap_;
+
+ if (!map.isRendered() || !ovmap.isRendered()) {
+ return;
+ }
+
+ var mapSize = map.getSize();
+ goog.asserts.assertArray(mapSize, 'mapSize should be an array');
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'view should be defined');
+ var extent = view.calculateExtent(mapSize);
+
+ var ovmapSize = ovmap.getSize();
+ goog.asserts.assertArray(ovmapSize, 'ovmapSize should be an array');
+
+ var ovview = ovmap.getView();
+ goog.asserts.assert(ovview, 'ovview should be defined');
+ var ovextent = ovview.calculateExtent(ovmapSize);
+
+ var topLeftPixel =
+ ovmap.getPixelFromCoordinate(ol.extent.getTopLeft(extent));
+ var bottomRightPixel =
+ ovmap.getPixelFromCoordinate(ol.extent.getBottomRight(extent));
+
+ var boxWidth = Math.abs(topLeftPixel[0] - bottomRightPixel[0]);
+ var boxHeight = Math.abs(topLeftPixel[1] - bottomRightPixel[1]);
+
+ var ovmapWidth = ovmapSize[0];
+ var ovmapHeight = ovmapSize[1];
+
+ if (boxWidth < ovmapWidth * ol.OVERVIEWMAP_MIN_RATIO ||
+ boxHeight < ovmapHeight * ol.OVERVIEWMAP_MIN_RATIO ||
+ boxWidth > ovmapWidth * ol.OVERVIEWMAP_MAX_RATIO ||
+ boxHeight > ovmapHeight * ol.OVERVIEWMAP_MAX_RATIO) {
+ this.resetExtent_();
+ } else if (!ol.extent.containsExtent(ovextent, extent)) {
+ this.recenter_();
+ }
+};
+
+
+/**
+ * Reset the overview map extent to half calculated min and max ratio times
+ * the extent of the main map.
+ * @private
+ */
+ol.control.OverviewMap.prototype.resetExtent_ = function() {
+ if (ol.OVERVIEWMAP_MAX_RATIO === 0 || ol.OVERVIEWMAP_MIN_RATIO === 0) {
+ return;
+ }
+
+ var map = this.getMap();
+ var ovmap = this.ovmap_;
+
+ var mapSize = map.getSize();
+ goog.asserts.assertArray(mapSize, 'mapSize should be an array');
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'view should be defined');
+ var extent = view.calculateExtent(mapSize);
+
+ var ovmapSize = ovmap.getSize();
+ goog.asserts.assertArray(ovmapSize, 'ovmapSize should be an array');
+
+ var ovview = ovmap.getView();
+ goog.asserts.assert(ovview, 'ovview should be defined');
+
+ // get how many times the current map overview could hold different
+ // box sizes using the min and max ratio, pick the step in the middle used
+ // to calculate the extent from the main map to set it to the overview map,
+ var steps = Math.log(
+ ol.OVERVIEWMAP_MAX_RATIO / ol.OVERVIEWMAP_MIN_RATIO) / Math.LN2;
+ var ratio = 1 / (Math.pow(2, steps / 2) * ol.OVERVIEWMAP_MIN_RATIO);
+ ol.extent.scaleFromCenter(extent, ratio);
+ ovview.fit(extent, ovmapSize);
+};
+
+
+/**
+ * Set the center of the overview map to the map center without changing its
+ * resolution.
+ * @private
+ */
+ol.control.OverviewMap.prototype.recenter_ = function() {
+ var map = this.getMap();
+ var ovmap = this.ovmap_;
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'view should be defined');
+
+ var ovview = ovmap.getView();
+ goog.asserts.assert(ovview, 'ovview should be defined');
+
+ ovview.setCenter(view.getCenter());
+};
+
+
+/**
+ * Update the box using the main map extent
+ * @private
+ */
+ol.control.OverviewMap.prototype.updateBox_ = function() {
+ var map = this.getMap();
+ var ovmap = this.ovmap_;
+
+ if (!map.isRendered() || !ovmap.isRendered()) {
+ return;
+ }
+
+ var mapSize = map.getSize();
+ goog.asserts.assertArray(mapSize, 'mapSize should be an array');
+
+ var view = map.getView();
+ goog.asserts.assert(view, 'view should be defined');
+
+ var ovview = ovmap.getView();
+ goog.asserts.assert(ovview, 'ovview should be defined');
+
+ var ovmapSize = ovmap.getSize();
+ goog.asserts.assertArray(ovmapSize, 'ovmapSize should be an array');
+
+ var rotation = view.getRotation();
+ goog.asserts.assert(rotation !== undefined, 'rotation should be defined');
+
+ var overlay = this.boxOverlay_;
+ var box = this.boxOverlay_.getElement();
+ var extent = view.calculateExtent(mapSize);
+ var ovresolution = ovview.getResolution();
+ var bottomLeft = ol.extent.getBottomLeft(extent);
+ var topRight = ol.extent.getTopRight(extent);
+
+ // set position using bottom left coordinates
+ var rotateBottomLeft = this.calculateCoordinateRotate_(rotation, bottomLeft);
+ overlay.setPosition(rotateBottomLeft);
+
+ // set box size calculated from map extent size and overview map resolution
+ if (box) {
+ box.style.width = Math.abs((bottomLeft[0] - topRight[0]) / ovresolution) + 'px';
+ box.style.height = Math.abs((topRight[1] - bottomLeft[1]) / ovresolution) + 'px';
+ }
+};
+
+
+/**
+ * @param {number} rotation Target rotation.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {ol.Coordinate|undefined} Coordinate for rotation and center anchor.
+ * @private
+ */
+ol.control.OverviewMap.prototype.calculateCoordinateRotate_ = function(
+ rotation, coordinate) {
+ var coordinateRotate;
+
+ var map = this.getMap();
+ var view = map.getView();
+ goog.asserts.assert(view, 'view should be defined');
+
+ var currentCenter = view.getCenter();
+
+ if (currentCenter) {
+ coordinateRotate = [
+ coordinate[0] - currentCenter[0],
+ coordinate[1] - currentCenter[1]
+ ];
+ ol.coordinate.rotate(coordinateRotate, rotation);
+ ol.coordinate.add(coordinateRotate, currentCenter);
+ }
+ return coordinateRotate;
+};
+
+
+/**
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.OverviewMap.prototype.handleClick_ = function(event) {
+ event.preventDefault();
+ this.handleToggle_();
+};
+
+
+/**
+ * @private
+ */
+ol.control.OverviewMap.prototype.handleToggle_ = function() {
+ this.element.classList.toggle('ol-collapsed');
+ if (this.collapsed_) {
+ ol.dom.replaceNode(this.collapseLabel_, this.label_);
+ } else {
+ ol.dom.replaceNode(this.label_, this.collapseLabel_);
+ }
+ this.collapsed_ = !this.collapsed_;
+
+ // manage overview map if it had not been rendered before and control
+ // is expanded
+ var ovmap = this.ovmap_;
+ if (!this.collapsed_ && !ovmap.isRendered()) {
+ ovmap.updateSize();
+ this.resetExtent_();
+ ol.events.listenOnce(ovmap, ol.MapEventType.POSTRENDER,
+ function(event) {
+ this.updateBox_();
+ },
+ this);
+ }
+};
+
+
+/**
+ * Return `true` if the overview map is collapsible, `false` otherwise.
+ * @return {boolean} True if the widget is collapsible.
+ * @api stable
+ */
+ol.control.OverviewMap.prototype.getCollapsible = function() {
+ return this.collapsible_;
+};
+
+
+/**
+ * Set whether the overview map should be collapsible.
+ * @param {boolean} collapsible True if the widget is collapsible.
+ * @api stable
+ */
+ol.control.OverviewMap.prototype.setCollapsible = function(collapsible) {
+ if (this.collapsible_ === collapsible) {
+ return;
+ }
+ this.collapsible_ = collapsible;
+ this.element.classList.toggle('ol-uncollapsible');
+ if (!collapsible && this.collapsed_) {
+ this.handleToggle_();
+ }
+};
+
+
+/**
+ * Collapse or expand the overview map according to the passed parameter. Will
+ * not do anything if the overview map isn't collapsible or if the current
+ * collapsed state is already the one requested.
+ * @param {boolean} collapsed True if the widget is collapsed.
+ * @api stable
+ */
+ol.control.OverviewMap.prototype.setCollapsed = function(collapsed) {
+ if (!this.collapsible_ || this.collapsed_ === collapsed) {
+ return;
+ }
+ this.handleToggle_();
+};
+
+
+/**
+ * Determine if the overview map is collapsed.
+ * @return {boolean} The overview map is collapsed.
+ * @api stable
+ */
+ol.control.OverviewMap.prototype.getCollapsed = function() {
+ return this.collapsed_;
+};
+
+
+/**
+ * Return the overview map.
+ * @return {ol.Map} Overview map.
+ * @api
+ */
+ol.control.OverviewMap.prototype.getOverviewMap = function() {
+ return this.ovmap_;
+};
+
+goog.provide('ol.control.ScaleLine');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+goog.require('ol.proj.METERS_PER_UNIT');
+goog.require('ol.proj.Units');
+
+
+/**
+ * @enum {string}
+ */
+ol.control.ScaleLineProperty = {
+ UNITS: 'units'
+};
+
+
+/**
+ * Units for the scale line. Supported values are `'degrees'`, `'imperial'`,
+ * `'nautical'`, `'metric'`, `'us'`.
+ * @enum {string}
+ */
+ol.control.ScaleLineUnits = {
+ DEGREES: 'degrees',
+ IMPERIAL: 'imperial',
+ NAUTICAL: 'nautical',
+ METRIC: 'metric',
+ US: 'us'
+};
+
+
+/**
+ * @classdesc
+ * A control displaying rough x-axis distances, calculated for the center of the
+ * viewport.
+ * No scale line will be shown when the x-axis distance cannot be calculated in
+ * the view projection (e.g. at or beyond the poles in EPSG:4326).
+ * By default the scale line will show in the bottom left portion of the map,
+ * but this can be changed by using the css selector `.ol-scale-line`.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.ScaleLineOptions=} opt_options Scale line options.
+ * @api stable
+ */
+ol.control.ScaleLine = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ var className = options.className !== undefined ? options.className : 'ol-scale-line';
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.innerElement_ = document.createElement('DIV');
+ this.innerElement_.className = className + '-inner';
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.element_ = document.createElement('DIV');
+ this.element_.className = className + ' ' + ol.css.CLASS_UNSELECTABLE;
+ this.element_.appendChild(this.innerElement_);
+
+ /**
+ * @private
+ * @type {?olx.ViewState}
+ */
+ this.viewState_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.minWidth_ = options.minWidth !== undefined ? options.minWidth : 64;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderedVisible_ = false;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.renderedWidth_ = undefined;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.renderedHTML_ = '';
+
+ var render = options.render ? options.render : ol.control.ScaleLine.render;
+
+ ol.control.Control.call(this, {
+ element: this.element_,
+ render: render,
+ target: options.target
+ });
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.control.ScaleLineProperty.UNITS),
+ this.handleUnitsChanged_, this);
+
+ this.setUnits(/** @type {ol.control.ScaleLineUnits} */ (options.units) ||
+ ol.control.ScaleLineUnits.METRIC);
+
+};
+ol.inherits(ol.control.ScaleLine, ol.control.Control);
+
+
+/**
+ * @const
+ * @type {Array.<number>}
+ */
+ol.control.ScaleLine.LEADING_DIGITS = [1, 2, 5];
+
+
+/**
+ * Return the units to use in the scale line.
+ * @return {ol.control.ScaleLineUnits|undefined} The units to use in the scale
+ * line.
+ * @observable
+ * @api stable
+ */
+ol.control.ScaleLine.prototype.getUnits = function() {
+ return /** @type {ol.control.ScaleLineUnits|undefined} */ (
+ this.get(ol.control.ScaleLineProperty.UNITS));
+};
+
+
+/**
+ * Update the scale line element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.ScaleLine}
+ * @api
+ */
+ol.control.ScaleLine.render = function(mapEvent) {
+ var frameState = mapEvent.frameState;
+ if (!frameState) {
+ this.viewState_ = null;
+ } else {
+ this.viewState_ = frameState.viewState;
+ }
+ this.updateElement_();
+};
+
+
+/**
+ * @private
+ */
+ol.control.ScaleLine.prototype.handleUnitsChanged_ = function() {
+ this.updateElement_();
+};
+
+
+/**
+ * Set the units to use in the scale line.
+ * @param {ol.control.ScaleLineUnits} units The units to use in the scale line.
+ * @observable
+ * @api stable
+ */
+ol.control.ScaleLine.prototype.setUnits = function(units) {
+ this.set(ol.control.ScaleLineProperty.UNITS, units);
+};
+
+
+/**
+ * @private
+ */
+ol.control.ScaleLine.prototype.updateElement_ = function() {
+ var viewState = this.viewState_;
+
+ if (!viewState) {
+ if (this.renderedVisible_) {
+ this.element_.style.display = 'none';
+ this.renderedVisible_ = false;
+ }
+ return;
+ }
+
+ var center = viewState.center;
+ var projection = viewState.projection;
+ var metersPerUnit = projection.getMetersPerUnit();
+ var pointResolution =
+ projection.getPointResolution(viewState.resolution, center) *
+ metersPerUnit;
+
+ var nominalCount = this.minWidth_ * pointResolution;
+ var suffix = '';
+ var units = this.getUnits();
+ if (units == ol.control.ScaleLineUnits.DEGREES) {
+ var metersPerDegree = ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES];
+ pointResolution /= metersPerDegree;
+ if (nominalCount < metersPerDegree / 60) {
+ suffix = '\u2033'; // seconds
+ pointResolution *= 3600;
+ } else if (nominalCount < metersPerDegree) {
+ suffix = '\u2032'; // minutes
+ pointResolution *= 60;
+ } else {
+ suffix = '\u00b0'; // degrees
+ }
+ } else if (units == ol.control.ScaleLineUnits.IMPERIAL) {
+ if (nominalCount < 0.9144) {
+ suffix = 'in';
+ pointResolution /= 0.0254;
+ } else if (nominalCount < 1609.344) {
+ suffix = 'ft';
+ pointResolution /= 0.3048;
+ } else {
+ suffix = 'mi';
+ pointResolution /= 1609.344;
+ }
+ } else if (units == ol.control.ScaleLineUnits.NAUTICAL) {
+ pointResolution /= 1852;
+ suffix = 'nm';
+ } else if (units == ol.control.ScaleLineUnits.METRIC) {
+ if (nominalCount < 1) {
+ suffix = 'mm';
+ pointResolution *= 1000;
+ } else if (nominalCount < 1000) {
+ suffix = 'm';
+ } else {
+ suffix = 'km';
+ pointResolution /= 1000;
+ }
+ } else if (units == ol.control.ScaleLineUnits.US) {
+ if (nominalCount < 0.9144) {
+ suffix = 'in';
+ pointResolution *= 39.37;
+ } else if (nominalCount < 1609.344) {
+ suffix = 'ft';
+ pointResolution /= 0.30480061;
+ } else {
+ suffix = 'mi';
+ pointResolution /= 1609.3472;
+ }
+ } else {
+ goog.asserts.fail('Scale line element cannot be updated');
+ }
+
+ var i = 3 * Math.floor(
+ Math.log(this.minWidth_ * pointResolution) / Math.log(10));
+ var count, width;
+ while (true) {
+ count = ol.control.ScaleLine.LEADING_DIGITS[((i % 3) + 3) % 3] *
+ Math.pow(10, Math.floor(i / 3));
+ width = Math.round(count / pointResolution);
+ if (isNaN(width)) {
+ this.element_.style.display = 'none';
+ this.renderedVisible_ = false;
+ return;
+ } else if (width >= this.minWidth_) {
+ break;
+ }
+ ++i;
+ }
+
+ var html = count + ' ' + suffix;
+ if (this.renderedHTML_ != html) {
+ this.innerElement_.innerHTML = html;
+ this.renderedHTML_ = html;
+ }
+
+ if (this.renderedWidth_ != width) {
+ this.innerElement_.style.width = width + 'px';
+ this.renderedWidth_ = width;
+ }
+
+ if (!this.renderedVisible_) {
+ this.element_.style.display = '';
+ this.renderedVisible_ = true;
+ }
+
+};
+
+// FIXME should possibly show tooltip when dragging?
+
+goog.provide('ol.control.ZoomSlider');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.pointer.PointerEventHandler');
+goog.require('ol.ViewHint');
+goog.require('ol.animation');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+goog.require('ol.easing');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * A slider type of control for zooming.
+ *
+ * Example:
+ *
+ * map.addControl(new ol.control.ZoomSlider());
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.ZoomSliderOptions=} opt_options Zoom slider options.
+ * @api stable
+ */
+ol.control.ZoomSlider = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * Will hold the current resolution of the view.
+ *
+ * @type {number|undefined}
+ * @private
+ */
+ this.currentResolution_ = undefined;
+
+ /**
+ * The direction of the slider. Will be determined from actual display of the
+ * container and defaults to ol.control.ZoomSlider.direction.VERTICAL.
+ *
+ * @type {ol.control.ZoomSlider.direction}
+ * @private
+ */
+ this.direction_ = ol.control.ZoomSlider.direction.VERTICAL;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.dragging_;
+
+ /**
+ * @type {!Array.<ol.EventsKey>}
+ * @private
+ */
+ this.dragListenerKeys_ = [];
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.heightLimit_ = 0;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.widthLimit_ = 0;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.previousX_;
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.previousY_;
+
+ /**
+ * The calculated thumb size (border box plus margins). Set when initSlider_
+ * is called.
+ * @type {ol.Size}
+ * @private
+ */
+ this.thumbSize_ = null;
+
+ /**
+ * Whether the slider is initialized.
+ * @type {boolean}
+ * @private
+ */
+ this.sliderInitialized_ = false;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 200;
+
+ var className = options.className !== undefined ? options.className : 'ol-zoomslider';
+ var thumbElement = document.createElement('button');
+ thumbElement.setAttribute('type', 'button');
+ thumbElement.className = className + '-thumb ' + ol.css.CLASS_UNSELECTABLE;
+ var containerElement = document.createElement('div');
+ containerElement.className = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' + ol.css.CLASS_CONTROL;
+ containerElement.appendChild(thumbElement);
+ /**
+ * @type {ol.pointer.PointerEventHandler}
+ * @private
+ */
+ this.dragger_ = new ol.pointer.PointerEventHandler(containerElement);
+
+ ol.events.listen(this.dragger_, ol.pointer.EventType.POINTERDOWN,
+ this.handleDraggerStart_, this);
+ ol.events.listen(this.dragger_, ol.pointer.EventType.POINTERMOVE,
+ this.handleDraggerDrag_, this);
+ ol.events.listen(this.dragger_, ol.pointer.EventType.POINTERUP,
+ this.handleDraggerEnd_, this);
+
+ ol.events.listen(containerElement, ol.events.EventType.CLICK,
+ this.handleContainerClick_, this);
+ ol.events.listen(thumbElement, ol.events.EventType.CLICK,
+ ol.events.Event.stopPropagation);
+
+ var render = options.render ? options.render : ol.control.ZoomSlider.render;
+
+ ol.control.Control.call(this, {
+ element: containerElement,
+ render: render
+ });
+};
+ol.inherits(ol.control.ZoomSlider, ol.control.Control);
+
+
+/**
+ * @inheritDoc
+ */
+ol.control.ZoomSlider.prototype.disposeInternal = function() {
+ this.dragger_.dispose();
+ ol.control.Control.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * The enum for available directions.
+ *
+ * @enum {number}
+ */
+ol.control.ZoomSlider.direction = {
+ VERTICAL: 0,
+ HORIZONTAL: 1
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.control.ZoomSlider.prototype.setMap = function(map) {
+ ol.control.Control.prototype.setMap.call(this, map);
+ if (map) {
+ map.render();
+ }
+};
+
+
+/**
+ * Initializes the slider element. This will determine and set this controls
+ * direction_ and also constrain the dragging of the thumb to always be within
+ * the bounds of the container.
+ *
+ * @private
+ */
+ol.control.ZoomSlider.prototype.initSlider_ = function() {
+ var container = this.element;
+ var containerSize = {
+ width: container.offsetWidth, height: container.offsetHeight
+ };
+
+ var thumb = container.firstElementChild;
+ var computedStyle = ol.global.getComputedStyle(thumb);
+ var thumbWidth = thumb.offsetWidth +
+ parseFloat(computedStyle['marginRight']) +
+ parseFloat(computedStyle['marginLeft']);
+ var thumbHeight = thumb.offsetHeight +
+ parseFloat(computedStyle['marginTop']) +
+ parseFloat(computedStyle['marginBottom']);
+ this.thumbSize_ = [thumbWidth, thumbHeight];
+
+ if (containerSize.width > containerSize.height) {
+ this.direction_ = ol.control.ZoomSlider.direction.HORIZONTAL;
+ this.widthLimit_ = containerSize.width - thumbWidth;
+ } else {
+ this.direction_ = ol.control.ZoomSlider.direction.VERTICAL;
+ this.heightLimit_ = containerSize.height - thumbHeight;
+ }
+ this.sliderInitialized_ = true;
+};
+
+
+/**
+ * Update the zoomslider element.
+ * @param {ol.MapEvent} mapEvent Map event.
+ * @this {ol.control.ZoomSlider}
+ * @api
+ */
+ol.control.ZoomSlider.render = function(mapEvent) {
+ if (!mapEvent.frameState) {
+ return;
+ }
+ goog.asserts.assert(mapEvent.frameState.viewState,
+ 'viewState should be defined');
+ if (!this.sliderInitialized_) {
+ this.initSlider_();
+ }
+ var res = mapEvent.frameState.viewState.resolution;
+ if (res !== this.currentResolution_) {
+ this.currentResolution_ = res;
+ this.setThumbPosition_(res);
+ }
+};
+
+
+/**
+ * @param {Event} event The browser event to handle.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.handleContainerClick_ = function(event) {
+ var map = this.getMap();
+ var view = map.getView();
+ var currentResolution = view.getResolution();
+ goog.asserts.assert(currentResolution,
+ 'currentResolution should be defined');
+ map.beforeRender(ol.animation.zoom({
+ resolution: currentResolution,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+ var relativePosition = this.getRelativePosition_(
+ event.offsetX - this.thumbSize_[0] / 2,
+ event.offsetY - this.thumbSize_[1] / 2);
+ var resolution = this.getResolutionForPosition_(relativePosition);
+ view.setResolution(view.constrainResolution(resolution));
+};
+
+
+/**
+ * Handle dragger start events.
+ * @param {ol.pointer.PointerEvent} event The drag event.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.handleDraggerStart_ = function(event) {
+ if (!this.dragging_ &&
+ event.originalEvent.target === this.element.firstElementChild) {
+ this.getMap().getView().setHint(ol.ViewHint.INTERACTING, 1);
+ this.previousX_ = event.clientX;
+ this.previousY_ = event.clientY;
+ this.dragging_ = true;
+
+ if (this.dragListenerKeys_.length === 0) {
+ var drag = this.handleDraggerDrag_;
+ var end = this.handleDraggerEnd_;
+ this.dragListenerKeys_.push(
+ ol.events.listen(document, ol.events.EventType.MOUSEMOVE, drag, this),
+ ol.events.listen(document, ol.events.EventType.TOUCHMOVE, drag, this),
+ ol.events.listen(document, ol.pointer.EventType.POINTERMOVE, drag, this),
+ ol.events.listen(document, ol.events.EventType.MOUSEUP, end, this),
+ ol.events.listen(document, ol.events.EventType.TOUCHEND, end, this),
+ ol.events.listen(document, ol.pointer.EventType.POINTERUP, end, this)
+ );
+ }
+ }
+};
+
+
+/**
+ * Handle dragger drag events.
+ *
+ * @param {ol.pointer.PointerEvent|Event} event The drag event.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.handleDraggerDrag_ = function(event) {
+ if (this.dragging_) {
+ var element = this.element.firstElementChild;
+ var deltaX = event.clientX - this.previousX_ + parseInt(element.style.left, 10);
+ var deltaY = event.clientY - this.previousY_ + parseInt(element.style.top, 10);
+ var relativePosition = this.getRelativePosition_(deltaX, deltaY);
+ this.currentResolution_ = this.getResolutionForPosition_(relativePosition);
+ this.getMap().getView().setResolution(this.currentResolution_);
+ this.setThumbPosition_(this.currentResolution_);
+ this.previousX_ = event.clientX;
+ this.previousY_ = event.clientY;
+ }
+};
+
+
+/**
+ * Handle dragger end events.
+ * @param {ol.pointer.PointerEvent|Event} event The drag event.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.handleDraggerEnd_ = function(event) {
+ if (this.dragging_) {
+ var map = this.getMap();
+ var view = map.getView();
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ goog.asserts.assert(this.currentResolution_,
+ 'this.currentResolution_ should be defined');
+ map.beforeRender(ol.animation.zoom({
+ resolution: this.currentResolution_,
+ duration: this.duration_,
+ easing: ol.easing.easeOut
+ }));
+ var resolution = view.constrainResolution(this.currentResolution_);
+ view.setResolution(resolution);
+ this.dragging_ = false;
+ this.previousX_ = undefined;
+ this.previousY_ = undefined;
+ this.dragListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.dragListenerKeys_.length = 0;
+ }
+};
+
+
+/**
+ * Positions the thumb inside its container according to the given resolution.
+ *
+ * @param {number} res The res.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.setThumbPosition_ = function(res) {
+ var position = this.getPositionForResolution_(res);
+ var thumb = this.element.firstElementChild;
+
+ if (this.direction_ == ol.control.ZoomSlider.direction.HORIZONTAL) {
+ thumb.style.left = this.widthLimit_ * position + 'px';
+ } else {
+ thumb.style.top = this.heightLimit_ * position + 'px';
+ }
+};
+
+
+/**
+ * Calculates the relative position of the thumb given x and y offsets. The
+ * relative position scales from 0 to 1. The x and y offsets are assumed to be
+ * in pixel units within the dragger limits.
+ *
+ * @param {number} x Pixel position relative to the left of the slider.
+ * @param {number} y Pixel position relative to the top of the slider.
+ * @return {number} The relative position of the thumb.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.getRelativePosition_ = function(x, y) {
+ var amount;
+ if (this.direction_ === ol.control.ZoomSlider.direction.HORIZONTAL) {
+ amount = x / this.widthLimit_;
+ } else {
+ amount = y / this.heightLimit_;
+ }
+ return ol.math.clamp(amount, 0, 1);
+};
+
+
+/**
+ * Calculates the corresponding resolution of the thumb given its relative
+ * position (where 0 is the minimum and 1 is the maximum).
+ *
+ * @param {number} position The relative position of the thumb.
+ * @return {number} The corresponding resolution.
+ * @private
+ */
+ol.control.ZoomSlider.prototype.getResolutionForPosition_ = function(position) {
+ var fn = this.getMap().getView().getResolutionForValueFunction();
+ return fn(1 - position);
+};
+
+
+/**
+ * Determines the relative position of the slider for the given resolution. A
+ * relative position of 0 corresponds to the minimum view resolution. A
+ * relative position of 1 corresponds to the maximum view resolution.
+ *
+ * @param {number} res The resolution.
+ * @return {number} The relative position value (between 0 and 1).
+ * @private
+ */
+ol.control.ZoomSlider.prototype.getPositionForResolution_ = function(res) {
+ var fn = this.getMap().getView().getValueForResolutionFunction();
+ return 1 - fn(res);
+};
+
+goog.provide('ol.control.ZoomToExtent');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.control.Control');
+goog.require('ol.css');
+
+
+/**
+ * @classdesc
+ * A button control which, when pressed, changes the map view to a specific
+ * extent. To style this control use the css selector `.ol-zoom-extent`.
+ *
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {olx.control.ZoomToExtentOptions=} opt_options Options.
+ * @api stable
+ */
+ol.control.ZoomToExtent = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @type {ol.Extent}
+ * @private
+ */
+ this.extent_ = options.extent ? options.extent : null;
+
+ var className = options.className !== undefined ? options.className :
+ 'ol-zoom-extent';
+
+ var label = options.label !== undefined ? options.label : 'E';
+ var tipLabel = options.tipLabel !== undefined ?
+ options.tipLabel : 'Fit to extent';
+ var button = document.createElement('button');
+ button.setAttribute('type', 'button');
+ button.title = tipLabel;
+ button.appendChild(
+ typeof label === 'string' ? document.createTextNode(label) : label
+ );
+
+ ol.events.listen(button, ol.events.EventType.CLICK,
+ this.handleClick_, this);
+
+ var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
+ ol.css.CLASS_CONTROL;
+ var element = document.createElement('div');
+ element.className = cssClasses;
+ element.appendChild(button);
+
+ ol.control.Control.call(this, {
+ element: element,
+ target: options.target
+ });
+};
+ol.inherits(ol.control.ZoomToExtent, ol.control.Control);
+
+
+/**
+ * @param {Event} event The event to handle
+ * @private
+ */
+ol.control.ZoomToExtent.prototype.handleClick_ = function(event) {
+ event.preventDefault();
+ this.handleZoomToExtent_();
+};
+
+
+/**
+ * @private
+ */
+ol.control.ZoomToExtent.prototype.handleZoomToExtent_ = function() {
+ var map = this.getMap();
+ var view = map.getView();
+ var extent = !this.extent_ ? view.getProjection().getExtent() : this.extent_;
+ var size = map.getSize();
+ goog.asserts.assert(size, 'size should be defined');
+ view.fit(extent, size);
+};
+
+goog.provide('ol.DeviceOrientation');
+
+goog.require('ol.events');
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.has');
+goog.require('ol.math');
+
+
+/**
+ * @enum {string}
+ */
+ol.DeviceOrientationProperty = {
+ ALPHA: 'alpha',
+ BETA: 'beta',
+ GAMMA: 'gamma',
+ HEADING: 'heading',
+ TRACKING: 'tracking'
+};
+
+
+/**
+ * @classdesc
+ * The ol.DeviceOrientation class provides access to information from
+ * DeviceOrientation events. See the [HTML 5 DeviceOrientation Specification](
+ * http://www.w3.org/TR/orientation-event/) for more details.
+ *
+ * Many new computers, and especially mobile phones
+ * and tablets, provide hardware support for device orientation. Web
+ * developers targeting mobile devices will be especially interested in this
+ * class.
+ *
+ * Device orientation data are relative to a common starting point. For mobile
+ * devices, the starting point is to lay your phone face up on a table with the
+ * top of the phone pointing north. This represents the zero state. All
+ * angles are then relative to this state. For computers, it is the same except
+ * the screen is open at 90 degrees.
+ *
+ * Device orientation is reported as three angles - `alpha`, `beta`, and
+ * `gamma` - relative to the starting position along the three planar axes X, Y
+ * and Z. The X axis runs from the left edge to the right edge through the
+ * middle of the device. Similarly, the Y axis runs from the bottom to the top
+ * of the device through the middle. The Z axis runs from the back to the front
+ * through the middle. In the starting position, the X axis points to the
+ * right, the Y axis points away from you and the Z axis points straight up
+ * from the device lying flat.
+ *
+ * The three angles representing the device orientation are relative to the
+ * three axes. `alpha` indicates how much the device has been rotated around the
+ * Z axis, which is commonly interpreted as the compass heading (see note
+ * below). `beta` indicates how much the device has been rotated around the X
+ * axis, or how much it is tilted from front to back. `gamma` indicates how
+ * much the device has been rotated around the Y axis, or how much it is tilted
+ * from left to right.
+ *
+ * For most browsers, the `alpha` value returns the compass heading so if the
+ * device points north, it will be 0. With Safari on iOS, the 0 value of
+ * `alpha` is calculated from when device orientation was first requested.
+ * ol.DeviceOrientation provides the `heading` property which normalizes this
+ * behavior across all browsers for you.
+ *
+ * It is important to note that the HTML 5 DeviceOrientation specification
+ * indicates that `alpha`, `beta` and `gamma` are in degrees while the
+ * equivalent properties in ol.DeviceOrientation are in radians for consistency
+ * with all other uses of angles throughout OpenLayers.
+ *
+ * To get notified of device orientation changes, register a listener for the
+ * generic `change` event on your `ol.DeviceOrientation` instance.
+ *
+ * @see {@link http://www.w3.org/TR/orientation-event/}
+ *
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.DeviceOrientationOptions=} opt_options Options.
+ * @api
+ */
+ol.DeviceOrientation = function(opt_options) {
+
+ ol.Object.call(this);
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {?ol.EventsKey}
+ */
+ this.listenerKey_ = null;
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.DeviceOrientationProperty.TRACKING),
+ this.handleTrackingChanged_, this);
+
+ this.setTracking(options.tracking !== undefined ? options.tracking : false);
+
+};
+ol.inherits(ol.DeviceOrientation, ol.Object);
+
+
+/**
+ * @inheritDoc
+ */
+ol.DeviceOrientation.prototype.disposeInternal = function() {
+ this.setTracking(false);
+ ol.Object.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @private
+ * @param {Event} originalEvent Event.
+ */
+ol.DeviceOrientation.prototype.orientationChange_ = function(originalEvent) {
+ var event = /** @type {DeviceOrientationEvent} */ (originalEvent);
+ if (event.alpha !== null) {
+ var alpha = ol.math.toRadians(event.alpha);
+ this.set(ol.DeviceOrientationProperty.ALPHA, alpha);
+ // event.absolute is undefined in iOS.
+ if (typeof event.absolute === 'boolean' && event.absolute) {
+ this.set(ol.DeviceOrientationProperty.HEADING, alpha);
+ } else if (goog.isNumber(event.webkitCompassHeading) &&
+ event.webkitCompassAccuracy != -1) {
+ var heading = ol.math.toRadians(event.webkitCompassHeading);
+ this.set(ol.DeviceOrientationProperty.HEADING, heading);
+ }
+ }
+ if (event.beta !== null) {
+ this.set(ol.DeviceOrientationProperty.BETA,
+ ol.math.toRadians(event.beta));
+ }
+ if (event.gamma !== null) {
+ this.set(ol.DeviceOrientationProperty.GAMMA,
+ ol.math.toRadians(event.gamma));
+ }
+ this.changed();
+};
+
+
+/**
+ * Rotation around the device z-axis (in radians).
+ * @return {number|undefined} The euler angle in radians of the device from the
+ * standard Z axis.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.getAlpha = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.DeviceOrientationProperty.ALPHA));
+};
+
+
+/**
+ * Rotation around the device x-axis (in radians).
+ * @return {number|undefined} The euler angle in radians of the device from the
+ * planar X axis.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.getBeta = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.DeviceOrientationProperty.BETA));
+};
+
+
+/**
+ * Rotation around the device y-axis (in radians).
+ * @return {number|undefined} The euler angle in radians of the device from the
+ * planar Y axis.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.getGamma = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.DeviceOrientationProperty.GAMMA));
+};
+
+
+/**
+ * The heading of the device relative to north (in radians).
+ * @return {number|undefined} The heading of the device relative to north, in
+ * radians, normalizing for different browser behavior.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.getHeading = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.DeviceOrientationProperty.HEADING));
+};
+
+
+/**
+ * Determine if orientation is being tracked.
+ * @return {boolean} Changes in device orientation are being tracked.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.getTracking = function() {
+ return /** @type {boolean} */ (
+ this.get(ol.DeviceOrientationProperty.TRACKING));
+};
+
+
+/**
+ * @private
+ */
+ol.DeviceOrientation.prototype.handleTrackingChanged_ = function() {
+ if (ol.has.DEVICE_ORIENTATION) {
+ var tracking = this.getTracking();
+ if (tracking && !this.listenerKey_) {
+ this.listenerKey_ = ol.events.listen(ol.global, 'deviceorientation',
+ this.orientationChange_, this);
+ } else if (!tracking && this.listenerKey_ !== null) {
+ ol.events.unlistenByKey(this.listenerKey_);
+ this.listenerKey_ = null;
+ }
+ }
+};
+
+
+/**
+ * Enable or disable tracking of device orientation events.
+ * @param {boolean} tracking The status of tracking changes to alpha, beta and
+ * gamma. If true, changes are tracked and reported immediately.
+ * @observable
+ * @api
+ */
+ol.DeviceOrientation.prototype.setTracking = function(tracking) {
+ this.set(ol.DeviceOrientationProperty.TRACKING, tracking);
+};
+
+goog.provide('ol.format.Feature');
+
+goog.require('ol.geom.Geometry');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for feature formats.
+ * {ol.format.Feature} subclasses provide the ability to decode and encode
+ * {@link ol.Feature} objects from a variety of commonly used geospatial
+ * file formats. See the documentation for each format for more details.
+ *
+ * @constructor
+ * @api stable
+ */
+ol.format.Feature = function() {
+
+ /**
+ * @protected
+ * @type {ol.proj.Projection}
+ */
+ this.defaultDataProjection = null;
+
+};
+
+
+/**
+ * @return {Array.<string>} Extensions.
+ */
+ol.format.Feature.prototype.getExtensions = goog.abstractMethod;
+
+
+/**
+ * Adds the data projection to the read options.
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @return {olx.format.ReadOptions|undefined} Options.
+ * @protected
+ */
+ol.format.Feature.prototype.getReadOptions = function(source, opt_options) {
+ var options;
+ if (opt_options) {
+ options = {
+ dataProjection: opt_options.dataProjection ?
+ opt_options.dataProjection : this.readProjection(source),
+ featureProjection: opt_options.featureProjection
+ };
+ }
+ return this.adaptOptions(options);
+};
+
+
+/**
+ * Sets the `defaultDataProjection` on the options, if no `dataProjection`
+ * is set.
+ * @param {olx.format.WriteOptions|olx.format.ReadOptions|undefined} options
+ * Options.
+ * @protected
+ * @return {olx.format.WriteOptions|olx.format.ReadOptions|undefined}
+ * Updated options.
+ */
+ol.format.Feature.prototype.adaptOptions = function(options) {
+ var updatedOptions;
+ if (options) {
+ updatedOptions = {
+ featureProjection: options.featureProjection,
+ dataProjection: options.dataProjection ?
+ options.dataProjection : this.defaultDataProjection,
+ rightHanded: options.rightHanded
+ };
+ if (options.decimals) {
+ updatedOptions.decimals = options.decimals;
+ }
+ }
+ return updatedOptions;
+};
+
+
+/**
+ * @return {ol.format.FormatType} Format.
+ */
+ol.format.Feature.prototype.getType = goog.abstractMethod;
+
+
+/**
+ * Read a single feature from a source.
+ *
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.Feature.prototype.readFeature = goog.abstractMethod;
+
+
+/**
+ * Read all features from a source.
+ *
+ * @param {Document|Node|ArrayBuffer|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.Feature.prototype.readFeatures = goog.abstractMethod;
+
+
+/**
+ * Read a single geometry from a source.
+ *
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.Feature.prototype.readGeometry = goog.abstractMethod;
+
+
+/**
+ * Read the projection from a source.
+ *
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.Feature.prototype.readProjection = goog.abstractMethod;
+
+
+/**
+ * Encode a feature in this format.
+ *
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} Result.
+ */
+ol.format.Feature.prototype.writeFeature = goog.abstractMethod;
+
+
+/**
+ * Encode an array of features in this format.
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} Result.
+ */
+ol.format.Feature.prototype.writeFeatures = goog.abstractMethod;
+
+
+/**
+ * Write a single geometry in this format.
+ *
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} Result.
+ */
+ol.format.Feature.prototype.writeGeometry = goog.abstractMethod;
+
+
+/**
+ * @param {ol.geom.Geometry|ol.Extent} geometry Geometry.
+ * @param {boolean} write Set to true for writing, false for reading.
+ * @param {(olx.format.WriteOptions|olx.format.ReadOptions)=} opt_options
+ * Options.
+ * @return {ol.geom.Geometry|ol.Extent} Transformed geometry.
+ * @protected
+ */
+ol.format.Feature.transformWithOptions = function(
+ geometry, write, opt_options) {
+ var featureProjection = opt_options ?
+ ol.proj.get(opt_options.featureProjection) : null;
+ var dataProjection = opt_options ?
+ ol.proj.get(opt_options.dataProjection) : null;
+ /**
+ * @type {ol.geom.Geometry|ol.Extent}
+ */
+ var transformed;
+ if (featureProjection && dataProjection &&
+ !ol.proj.equivalent(featureProjection, dataProjection)) {
+ if (geometry instanceof ol.geom.Geometry) {
+ transformed = (write ? geometry.clone() : geometry).transform(
+ write ? featureProjection : dataProjection,
+ write ? dataProjection : featureProjection);
+ } else {
+ // FIXME this is necessary because ol.format.GML treats extents
+ // as geometries
+ transformed = ol.proj.transformExtent(
+ write ? geometry.slice() : geometry,
+ write ? featureProjection : dataProjection,
+ write ? dataProjection : featureProjection);
+ }
+ } else {
+ transformed = geometry;
+ }
+ if (write && opt_options && opt_options.decimals) {
+ var power = Math.pow(10, opt_options.decimals);
+ // if decimals option on write, round each coordinate appropriately
+ /**
+ * @param {Array.<number>} coordinates Coordinates.
+ * @return {Array.<number>} Transformed coordinates.
+ */
+ var transform = function(coordinates) {
+ for (var i = 0, ii = coordinates.length; i < ii; ++i) {
+ coordinates[i] = Math.round(coordinates[i] * power) / power;
+ }
+ return coordinates;
+ };
+ if (Array.isArray(transformed)) {
+ transform(transformed);
+ } else {
+ transformed.applyTransform(transform);
+ }
+ }
+ return transformed;
+};
+
+goog.provide('ol.format.JSONFeature');
+
+goog.require('goog.asserts');
+goog.require('ol.format.Feature');
+goog.require('ol.format.FormatType');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for JSON feature formats.
+ *
+ * @constructor
+ * @extends {ol.format.Feature}
+ */
+ol.format.JSONFeature = function() {
+ ol.format.Feature.call(this);
+};
+ol.inherits(ol.format.JSONFeature, ol.format.Feature);
+
+
+/**
+ * @param {Document|Node|Object|string} source Source.
+ * @private
+ * @return {Object} Object.
+ */
+ol.format.JSONFeature.prototype.getObject_ = function(source) {
+ if (goog.isObject(source)) {
+ return source;
+ } else if (typeof source === 'string') {
+ var object = JSON.parse(source);
+ return object ? /** @type {Object} */ (object) : null;
+ } else {
+ goog.asserts.fail();
+ return null;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.getType = function() {
+ return ol.format.FormatType.JSON;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.readFeature = function(source, opt_options) {
+ return this.readFeatureFromObject(
+ this.getObject_(source), this.getReadOptions(source, opt_options));
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.readFeatures = function(source, opt_options) {
+ return this.readFeaturesFromObject(
+ this.getObject_(source), this.getReadOptions(source, opt_options));
+};
+
+
+/**
+ * @param {Object} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {ol.Feature} Feature.
+ */
+ol.format.JSONFeature.prototype.readFeatureFromObject = goog.abstractMethod;
+
+
+/**
+ * @param {Object} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.JSONFeature.prototype.readFeaturesFromObject = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.readGeometry = function(source, opt_options) {
+ return this.readGeometryFromObject(
+ this.getObject_(source), this.getReadOptions(source, opt_options));
+};
+
+
+/**
+ * @param {Object} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.JSONFeature.prototype.readGeometryFromObject = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.readProjection = function(source) {
+ return this.readProjectionFromObject(this.getObject_(source));
+};
+
+
+/**
+ * @param {Object} object Object.
+ * @protected
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.JSONFeature.prototype.readProjectionFromObject = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.writeFeature = function(feature, opt_options) {
+ return JSON.stringify(this.writeFeatureObject(feature, opt_options));
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {Object} Object.
+ */
+ol.format.JSONFeature.prototype.writeFeatureObject = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.writeFeatures = function(features, opt_options) {
+ return JSON.stringify(this.writeFeaturesObject(features, opt_options));
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {Object} Object.
+ */
+ol.format.JSONFeature.prototype.writeFeaturesObject = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.JSONFeature.prototype.writeGeometry = function(geometry, opt_options) {
+ return JSON.stringify(this.writeGeometryObject(geometry, opt_options));
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {Object} Object.
+ */
+ol.format.JSONFeature.prototype.writeGeometryObject = goog.abstractMethod;
+
+goog.provide('ol.geom.flat.interpolate');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.math');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} fraction Fraction.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Destination.
+ */
+ol.geom.flat.interpolate.lineString = function(flatCoordinates, offset, end, stride, fraction, opt_dest) {
+ // FIXME does not work when vertices are repeated
+ // FIXME interpolate extra dimensions
+ goog.asserts.assert(0 <= fraction && fraction <= 1,
+ 'fraction should be in between 0 and 1');
+ var pointX = NaN;
+ var pointY = NaN;
+ var n = (end - offset) / stride;
+ if (n === 0) {
+ goog.asserts.fail('n cannot be 0');
+ } else if (n == 1) {
+ pointX = flatCoordinates[offset];
+ pointY = flatCoordinates[offset + 1];
+ } else if (n == 2) {
+ pointX = (1 - fraction) * flatCoordinates[offset] +
+ fraction * flatCoordinates[offset + stride];
+ pointY = (1 - fraction) * flatCoordinates[offset + 1] +
+ fraction * flatCoordinates[offset + stride + 1];
+ } else {
+ var x1 = flatCoordinates[offset];
+ var y1 = flatCoordinates[offset + 1];
+ var length = 0;
+ var cumulativeLengths = [0];
+ var i;
+ for (i = offset + stride; i < end; i += stride) {
+ var x2 = flatCoordinates[i];
+ var y2 = flatCoordinates[i + 1];
+ length += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
+ cumulativeLengths.push(length);
+ x1 = x2;
+ y1 = y2;
+ }
+ var target = fraction * length;
+ var index = ol.array.binarySearch(cumulativeLengths, target);
+ if (index < 0) {
+ var t = (target - cumulativeLengths[-index - 2]) /
+ (cumulativeLengths[-index - 1] - cumulativeLengths[-index - 2]);
+ var o = offset + (-index - 2) * stride;
+ pointX = ol.math.lerp(
+ flatCoordinates[o], flatCoordinates[o + stride], t);
+ pointY = ol.math.lerp(
+ flatCoordinates[o + 1], flatCoordinates[o + stride + 1], t);
+ } else {
+ pointX = flatCoordinates[offset + index * stride];
+ pointY = flatCoordinates[offset + index * stride + 1];
+ }
+ }
+ if (opt_dest) {
+ opt_dest[0] = pointX;
+ opt_dest[1] = pointY;
+ return opt_dest;
+ } else {
+ return [pointX, pointY];
+ }
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {number} m M.
+ * @param {boolean} extrapolate Extrapolate.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ol.geom.flat.lineStringCoordinateAtM = function(flatCoordinates, offset, end, stride, m, extrapolate) {
+ if (end == offset) {
+ return null;
+ }
+ var coordinate;
+ if (m < flatCoordinates[offset + stride - 1]) {
+ if (extrapolate) {
+ coordinate = flatCoordinates.slice(offset, offset + stride);
+ coordinate[stride - 1] = m;
+ return coordinate;
+ } else {
+ return null;
+ }
+ } else if (flatCoordinates[end - 1] < m) {
+ if (extrapolate) {
+ coordinate = flatCoordinates.slice(end - stride, end);
+ coordinate[stride - 1] = m;
+ return coordinate;
+ } else {
+ return null;
+ }
+ }
+ // FIXME use O(1) search
+ if (m == flatCoordinates[offset + stride - 1]) {
+ return flatCoordinates.slice(offset, offset + stride);
+ }
+ var lo = offset / stride;
+ var hi = end / stride;
+ while (lo < hi) {
+ var mid = (lo + hi) >> 1;
+ if (m < flatCoordinates[(mid + 1) * stride - 1]) {
+ hi = mid;
+ } else {
+ lo = mid + 1;
+ }
+ }
+ var m0 = flatCoordinates[lo * stride - 1];
+ if (m == m0) {
+ return flatCoordinates.slice((lo - 1) * stride, (lo - 1) * stride + stride);
+ }
+ var m1 = flatCoordinates[(lo + 1) * stride - 1];
+ goog.asserts.assert(m0 < m, 'm0 should be less than m');
+ goog.asserts.assert(m <= m1, 'm should be less than or equal to m1');
+ var t = (m - m0) / (m1 - m0);
+ coordinate = [];
+ var i;
+ for (i = 0; i < stride - 1; ++i) {
+ coordinate.push(ol.math.lerp(flatCoordinates[(lo - 1) * stride + i],
+ flatCoordinates[lo * stride + i], t));
+ }
+ coordinate.push(m);
+ goog.asserts.assert(coordinate.length == stride,
+ 'length of coordinate array should match stride');
+ return coordinate;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {number} m M.
+ * @param {boolean} extrapolate Extrapolate.
+ * @param {boolean} interpolate Interpolate.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ol.geom.flat.lineStringsCoordinateAtM = function(
+ flatCoordinates, offset, ends, stride, m, extrapolate, interpolate) {
+ if (interpolate) {
+ return ol.geom.flat.lineStringCoordinateAtM(
+ flatCoordinates, offset, ends[ends.length - 1], stride, m, extrapolate);
+ }
+ var coordinate;
+ if (m < flatCoordinates[stride - 1]) {
+ if (extrapolate) {
+ coordinate = flatCoordinates.slice(0, stride);
+ coordinate[stride - 1] = m;
+ return coordinate;
+ } else {
+ return null;
+ }
+ }
+ if (flatCoordinates[flatCoordinates.length - 1] < m) {
+ if (extrapolate) {
+ coordinate = flatCoordinates.slice(flatCoordinates.length - stride);
+ coordinate[stride - 1] = m;
+ return coordinate;
+ } else {
+ return null;
+ }
+ }
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ if (offset == end) {
+ continue;
+ }
+ if (m < flatCoordinates[offset + stride - 1]) {
+ return null;
+ } else if (m <= flatCoordinates[end - 1]) {
+ return ol.geom.flat.lineStringCoordinateAtM(
+ flatCoordinates, offset, end, stride, m, false);
+ }
+ offset = end;
+ }
+ goog.asserts.fail(
+ 'ol.geom.flat.lineStringsCoordinateAtM should have returned');
+ return null;
+};
+
+goog.provide('ol.geom.flat.length');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {number} Length.
+ */
+ol.geom.flat.length.lineString = function(flatCoordinates, offset, end, stride) {
+ var x1 = flatCoordinates[offset];
+ var y1 = flatCoordinates[offset + 1];
+ var length = 0;
+ var i;
+ for (i = offset + stride; i < end; i += stride) {
+ var x2 = flatCoordinates[i];
+ var y2 = flatCoordinates[i + 1];
+ length += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
+ x1 = x2;
+ y1 = y2;
+ }
+ return length;
+};
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {number} Perimeter.
+ */
+ol.geom.flat.length.linearRing = function(flatCoordinates, offset, end, stride) {
+ var perimeter =
+ ol.geom.flat.length.lineString(flatCoordinates, offset, end, stride);
+ var dx = flatCoordinates[end - stride] - flatCoordinates[offset];
+ var dy = flatCoordinates[end - stride + 1] - flatCoordinates[offset + 1];
+ perimeter += Math.sqrt(dx * dx + dy * dy);
+ return perimeter;
+};
+
+goog.provide('ol.geom.LineString');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.closest');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.geom.flat.interpolate');
+goog.require('ol.geom.flat.intersectsextent');
+goog.require('ol.geom.flat.length');
+goog.require('ol.geom.flat.segments');
+goog.require('ol.geom.flat.simplify');
+
+
+/**
+ * @classdesc
+ * Linestring geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.LineString = function(coordinates, opt_layout) {
+
+ ol.geom.SimpleGeometry.call(this);
+
+ /**
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.flatMidpoint_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.flatMidpointRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDelta_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDeltaRevision_ = -1;
+
+ this.setCoordinates(coordinates, opt_layout);
+
+};
+ol.inherits(ol.geom.LineString, ol.geom.SimpleGeometry);
+
+
+/**
+ * Append the passed coordinate to the coordinates of the linestring.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @api stable
+ */
+ol.geom.LineString.prototype.appendCoordinate = function(coordinate) {
+ goog.asserts.assert(coordinate.length == this.stride,
+ 'length of coordinate array should match stride');
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = coordinate.slice();
+ } else {
+ ol.array.extend(this.flatCoordinates, coordinate);
+ }
+ this.changed();
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.LineString} Clone.
+ * @api stable
+ */
+ol.geom.LineString.prototype.clone = function() {
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
+ return lineString;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.LineString.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ if (this.maxDeltaRevision_ != this.getRevision()) {
+ this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getMaxSquaredDelta(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));
+ this.maxDeltaRevision_ = this.getRevision();
+ }
+ return ol.geom.flat.closest.getClosestPoint(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ this.maxDelta_, false, x, y, closestPoint, minSquaredDistance);
+};
+
+
+/**
+ * Iterate over each segment, calling the provided callback.
+ * If the callback returns a truthy value the function returns that
+ * value immediately. Otherwise the function returns `false`.
+ *
+ * @param {function(this: S, ol.Coordinate, ol.Coordinate): T} callback Function
+ * called for each segment.
+ * @param {S=} opt_this The object to be used as the value of 'this'
+ * within callback.
+ * @return {T|boolean} Value.
+ * @template T,S
+ * @api
+ */
+ol.geom.LineString.prototype.forEachSegment = function(callback, opt_this) {
+ return ol.geom.flat.segments.forEach(this.flatCoordinates, 0,
+ this.flatCoordinates.length, this.stride, callback, opt_this);
+};
+
+
+/**
+ * Returns the coordinate at `m` using linear interpolation, or `null` if no
+ * such coordinate exists.
+ *
+ * `opt_extrapolate` controls extrapolation beyond the range of Ms in the
+ * MultiLineString. If `opt_extrapolate` is `true` then Ms less than the first
+ * M will return the first coordinate and Ms greater than the last M will
+ * return the last coordinate.
+ *
+ * @param {number} m M.
+ * @param {boolean=} opt_extrapolate Extrapolate. Default is `false`.
+ * @return {ol.Coordinate} Coordinate.
+ * @api stable
+ */
+ol.geom.LineString.prototype.getCoordinateAtM = function(m, opt_extrapolate) {
+ if (this.layout != ol.geom.GeometryLayout.XYM &&
+ this.layout != ol.geom.GeometryLayout.XYZM) {
+ return null;
+ }
+ var extrapolate = opt_extrapolate !== undefined ? opt_extrapolate : false;
+ return ol.geom.flat.lineStringCoordinateAtM(this.flatCoordinates, 0,
+ this.flatCoordinates.length, this.stride, m, extrapolate);
+};
+
+
+/**
+ * Return the coordinates of the linestring.
+ * @return {Array.<ol.Coordinate>} Coordinates.
+ * @api stable
+ */
+ol.geom.LineString.prototype.getCoordinates = function() {
+ return ol.geom.flat.inflate.coordinates(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
+};
+
+
+/**
+ * Return the coordinate at the provided fraction along the linestring.
+ * The `fraction` is a number between 0 and 1, where 0 is the start of the
+ * linestring and 1 is the end.
+ * @param {number} fraction Fraction.
+ * @param {ol.Coordinate=} opt_dest Optional coordinate whose values will
+ * be modified. If not provided, a new coordinate will be returned.
+ * @return {ol.Coordinate} Coordinate of the interpolated point.
+ * @api
+ */
+ol.geom.LineString.prototype.getCoordinateAt = function(fraction, opt_dest) {
+ return ol.geom.flat.interpolate.lineString(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ fraction, opt_dest);
+};
+
+
+/**
+ * Return the length of the linestring on projected plane.
+ * @return {number} Length (on projected plane).
+ * @api stable
+ */
+ol.geom.LineString.prototype.getLength = function() {
+ return ol.geom.flat.length.lineString(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
+};
+
+
+/**
+ * @return {Array.<number>} Flat midpoint.
+ */
+ol.geom.LineString.prototype.getFlatMidpoint = function() {
+ if (this.flatMidpointRevision_ != this.getRevision()) {
+ this.flatMidpoint_ = this.getCoordinateAt(0.5, this.flatMidpoint_);
+ this.flatMidpointRevision_ = this.getRevision();
+ }
+ return this.flatMidpoint_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.LineString.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ var simplifiedFlatCoordinates = [];
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeucker(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ squaredTolerance, simplifiedFlatCoordinates, 0);
+ var simplifiedLineString = new ol.geom.LineString(null);
+ simplifiedLineString.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates);
+ return simplifiedLineString;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.LineString.prototype.getType = function() {
+ return ol.geom.GeometryType.LINE_STRING;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.LineString.prototype.intersectsExtent = function(extent) {
+ return ol.geom.flat.intersectsextent.lineString(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
+ extent);
+};
+
+
+/**
+ * Set the coordinates of the linestring.
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.LineString.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
+ } else {
+ this.setLayout(opt_layout, coordinates, 1);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ this.flatCoordinates.length = ol.geom.flat.deflate.coordinates(
+ this.flatCoordinates, 0, coordinates, this.stride);
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ */
+ol.geom.LineString.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.changed();
+};
+
+goog.provide('ol.geom.MultiLineString');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.closest');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.geom.flat.interpolate');
+goog.require('ol.geom.flat.intersectsextent');
+goog.require('ol.geom.flat.simplify');
+
+
+/**
+ * @classdesc
+ * Multi-linestring geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiLineString = function(coordinates, opt_layout) {
+
+ ol.geom.SimpleGeometry.call(this);
+
+ /**
+ * @type {Array.<number>}
+ * @private
+ */
+ this.ends_ = [];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDelta_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDeltaRevision_ = -1;
+
+ this.setCoordinates(coordinates, opt_layout);
+
+};
+ol.inherits(ol.geom.MultiLineString, ol.geom.SimpleGeometry);
+
+
+/**
+ * Append the passed linestring to the multilinestring.
+ * @param {ol.geom.LineString} lineString LineString.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.appendLineString = function(lineString) {
+ goog.asserts.assert(lineString.getLayout() == this.layout,
+ 'layout of lineString should match the layout');
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = lineString.getFlatCoordinates().slice();
+ } else {
+ ol.array.extend(
+ this.flatCoordinates, lineString.getFlatCoordinates().slice());
+ }
+ this.ends_.push(this.flatCoordinates.length);
+ this.changed();
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiLineString} Clone.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.clone = function() {
+ var multiLineString = new ol.geom.MultiLineString(null);
+ multiLineString.setFlatCoordinates(
+ this.layout, this.flatCoordinates.slice(), this.ends_.slice());
+ return multiLineString;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiLineString.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ if (this.maxDeltaRevision_ != this.getRevision()) {
+ this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getsMaxSquaredDelta(
+ this.flatCoordinates, 0, this.ends_, this.stride, 0));
+ this.maxDeltaRevision_ = this.getRevision();
+ }
+ return ol.geom.flat.closest.getsClosestPoint(
+ this.flatCoordinates, 0, this.ends_, this.stride,
+ this.maxDelta_, false, x, y, closestPoint, minSquaredDistance);
+};
+
+
+/**
+ * Returns the coordinate at `m` using linear interpolation, or `null` if no
+ * such coordinate exists.
+ *
+ * `opt_extrapolate` controls extrapolation beyond the range of Ms in the
+ * MultiLineString. If `opt_extrapolate` is `true` then Ms less than the first
+ * M will return the first coordinate and Ms greater than the last M will
+ * return the last coordinate.
+ *
+ * `opt_interpolate` controls interpolation between consecutive LineStrings
+ * within the MultiLineString. If `opt_interpolate` is `true` the coordinates
+ * will be linearly interpolated between the last coordinate of one LineString
+ * and the first coordinate of the next LineString. If `opt_interpolate` is
+ * `false` then the function will return `null` for Ms falling between
+ * LineStrings.
+ *
+ * @param {number} m M.
+ * @param {boolean=} opt_extrapolate Extrapolate. Default is `false`.
+ * @param {boolean=} opt_interpolate Interpolate. Default is `false`.
+ * @return {ol.Coordinate} Coordinate.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.getCoordinateAtM = function(m, opt_extrapolate, opt_interpolate) {
+ if ((this.layout != ol.geom.GeometryLayout.XYM &&
+ this.layout != ol.geom.GeometryLayout.XYZM) ||
+ this.flatCoordinates.length === 0) {
+ return null;
+ }
+ var extrapolate = opt_extrapolate !== undefined ? opt_extrapolate : false;
+ var interpolate = opt_interpolate !== undefined ? opt_interpolate : false;
+ return ol.geom.flat.lineStringsCoordinateAtM(this.flatCoordinates, 0,
+ this.ends_, this.stride, m, extrapolate, interpolate);
+};
+
+
+/**
+ * Return the coordinates of the multilinestring.
+ * @return {Array.<Array.<ol.Coordinate>>} Coordinates.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.getCoordinates = function() {
+ return ol.geom.flat.inflate.coordinatess(
+ this.flatCoordinates, 0, this.ends_, this.stride);
+};
+
+
+/**
+ * @return {Array.<number>} Ends.
+ */
+ol.geom.MultiLineString.prototype.getEnds = function() {
+ return this.ends_;
+};
+
+
+/**
+ * Return the linestring at the specified index.
+ * @param {number} index Index.
+ * @return {ol.geom.LineString} LineString.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.getLineString = function(index) {
+ goog.asserts.assert(0 <= index && index < this.ends_.length,
+ 'index should be in between 0 and length of the this.ends_ array');
+ if (index < 0 || this.ends_.length <= index) {
+ return null;
+ }
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
+ index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]));
+ return lineString;
+};
+
+
+/**
+ * Return the linestrings of this multilinestring.
+ * @return {Array.<ol.geom.LineString>} LineStrings.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.getLineStrings = function() {
+ var flatCoordinates = this.flatCoordinates;
+ var ends = this.ends_;
+ var layout = this.layout;
+ /** @type {Array.<ol.geom.LineString>} */
+ var lineStrings = [];
+ var offset = 0;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(layout, flatCoordinates.slice(offset, end));
+ lineStrings.push(lineString);
+ offset = end;
+ }
+ return lineStrings;
+};
+
+
+/**
+ * @return {Array.<number>} Flat midpoints.
+ */
+ol.geom.MultiLineString.prototype.getFlatMidpoints = function() {
+ var midpoints = [];
+ var flatCoordinates = this.flatCoordinates;
+ var offset = 0;
+ var ends = this.ends_;
+ var stride = this.stride;
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ var end = ends[i];
+ var midpoint = ol.geom.flat.interpolate.lineString(
+ flatCoordinates, offset, end, stride, 0.5);
+ ol.array.extend(midpoints, midpoint);
+ offset = end;
+ }
+ return midpoints;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiLineString.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ var simplifiedFlatCoordinates = [];
+ var simplifiedEnds = [];
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeuckers(
+ this.flatCoordinates, 0, this.ends_, this.stride, squaredTolerance,
+ simplifiedFlatCoordinates, 0, simplifiedEnds);
+ var simplifiedMultiLineString = new ol.geom.MultiLineString(null);
+ simplifiedMultiLineString.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEnds);
+ return simplifiedMultiLineString;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.getType = function() {
+ return ol.geom.GeometryType.MULTI_LINE_STRING;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.intersectsExtent = function(extent) {
+ return ol.geom.flat.intersectsextent.lineStrings(
+ this.flatCoordinates, 0, this.ends_, this.stride, extent);
+};
+
+
+/**
+ * Set the coordinates of the multilinestring.
+ * @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiLineString.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.ends_);
+ } else {
+ this.setLayout(opt_layout, coordinates, 2);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ var ends = ol.geom.flat.deflate.coordinatess(
+ this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
+ this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {Array.<number>} ends Ends.
+ */
+ol.geom.MultiLineString.prototype.setFlatCoordinates = function(layout, flatCoordinates, ends) {
+ if (!flatCoordinates) {
+ goog.asserts.assert(ends && ends.length === 0,
+ 'ends must be truthy and ends.length should be 0');
+ } else if (ends.length === 0) {
+ goog.asserts.assert(flatCoordinates.length === 0,
+ 'flatCoordinates should be an empty array');
+ } else {
+ goog.asserts.assert(flatCoordinates.length == ends[ends.length - 1],
+ 'length of flatCoordinates array should match the last value of ends');
+ }
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.ends_ = ends;
+ this.changed();
+};
+
+
+/**
+ * @param {Array.<ol.geom.LineString>} lineStrings LineStrings.
+ */
+ol.geom.MultiLineString.prototype.setLineStrings = function(lineStrings) {
+ var layout = this.getLayout();
+ var flatCoordinates = [];
+ var ends = [];
+ var i, ii;
+ for (i = 0, ii = lineStrings.length; i < ii; ++i) {
+ var lineString = lineStrings[i];
+ if (i === 0) {
+ layout = lineString.getLayout();
+ } else {
+ // FIXME better handle the case of non-matching layouts
+ goog.asserts.assert(lineString.getLayout() == layout,
+ 'layout of lineString should match layout');
+ }
+ ol.array.extend(flatCoordinates, lineString.getFlatCoordinates());
+ ends.push(flatCoordinates.length);
+ }
+ this.setFlatCoordinates(layout, flatCoordinates, ends);
+};
+
+goog.provide('ol.geom.MultiPoint');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.math');
+
+
+/**
+ * @classdesc
+ * Multi-point geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiPoint = function(coordinates, opt_layout) {
+ ol.geom.SimpleGeometry.call(this);
+ this.setCoordinates(coordinates, opt_layout);
+};
+ol.inherits(ol.geom.MultiPoint, ol.geom.SimpleGeometry);
+
+
+/**
+ * Append the passed point to this multipoint.
+ * @param {ol.geom.Point} point Point.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.appendPoint = function(point) {
+ goog.asserts.assert(point.getLayout() == this.layout,
+ 'the layout of point should match layout');
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = point.getFlatCoordinates().slice();
+ } else {
+ ol.array.extend(this.flatCoordinates, point.getFlatCoordinates());
+ }
+ this.changed();
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiPoint} Clone.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.clone = function() {
+ var multiPoint = new ol.geom.MultiPoint(null);
+ multiPoint.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
+ return multiPoint;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiPoint.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ var flatCoordinates = this.flatCoordinates;
+ var stride = this.stride;
+ var i, ii, j;
+ for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
+ var squaredDistance = ol.math.squaredDistance(
+ x, y, flatCoordinates[i], flatCoordinates[i + 1]);
+ if (squaredDistance < minSquaredDistance) {
+ minSquaredDistance = squaredDistance;
+ for (j = 0; j < stride; ++j) {
+ closestPoint[j] = flatCoordinates[i + j];
+ }
+ closestPoint.length = stride;
+ }
+ }
+ return minSquaredDistance;
+};
+
+
+/**
+ * Return the coordinates of the multipoint.
+ * @return {Array.<ol.Coordinate>} Coordinates.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.getCoordinates = function() {
+ return ol.geom.flat.inflate.coordinates(
+ this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
+};
+
+
+/**
+ * Return the point at the specified index.
+ * @param {number} index Index.
+ * @return {ol.geom.Point} Point.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.getPoint = function(index) {
+ var n = !this.flatCoordinates ?
+ 0 : this.flatCoordinates.length / this.stride;
+ goog.asserts.assert(0 <= index && index < n,
+ 'index should be in between 0 and n');
+ if (index < 0 || n <= index) {
+ return null;
+ }
+ var point = new ol.geom.Point(null);
+ point.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
+ index * this.stride, (index + 1) * this.stride));
+ return point;
+};
+
+
+/**
+ * Return the points of this multipoint.
+ * @return {Array.<ol.geom.Point>} Points.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.getPoints = function() {
+ var flatCoordinates = this.flatCoordinates;
+ var layout = this.layout;
+ var stride = this.stride;
+ /** @type {Array.<ol.geom.Point>} */
+ var points = [];
+ var i, ii;
+ for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
+ var point = new ol.geom.Point(null);
+ point.setFlatCoordinates(layout, flatCoordinates.slice(i, i + stride));
+ points.push(point);
+ }
+ return points;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.getType = function() {
+ return ol.geom.GeometryType.MULTI_POINT;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.intersectsExtent = function(extent) {
+ var flatCoordinates = this.flatCoordinates;
+ var stride = this.stride;
+ var i, ii, x, y;
+ for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
+ x = flatCoordinates[i];
+ y = flatCoordinates[i + 1];
+ if (ol.extent.containsXY(extent, x, y)) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Set the coordinates of the multipoint.
+ * @param {Array.<ol.Coordinate>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiPoint.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
+ } else {
+ this.setLayout(opt_layout, coordinates, 1);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ this.flatCoordinates.length = ol.geom.flat.deflate.coordinates(
+ this.flatCoordinates, 0, coordinates, this.stride);
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ */
+ol.geom.MultiPoint.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.changed();
+};
+
+goog.provide('ol.geom.flat.center');
+
+goog.require('ol.extent');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @return {Array.<number>} Flat centers.
+ */
+ol.geom.flat.center.linearRingss = function(flatCoordinates, offset, endss, stride) {
+ var flatCenters = [];
+ var i, ii;
+ var extent = ol.extent.createEmpty();
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i];
+ extent = ol.extent.createOrUpdateFromFlatCoordinates(
+ flatCoordinates, offset, ends[0], stride);
+ flatCenters.push((extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2);
+ offset = ends[ends.length - 1];
+ }
+ return flatCenters;
+};
+
+goog.provide('ol.geom.MultiPolygon');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.Polygon');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.area');
+goog.require('ol.geom.flat.center');
+goog.require('ol.geom.flat.closest');
+goog.require('ol.geom.flat.contains');
+goog.require('ol.geom.flat.deflate');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.geom.flat.interiorpoint');
+goog.require('ol.geom.flat.intersectsextent');
+goog.require('ol.geom.flat.orient');
+goog.require('ol.geom.flat.simplify');
+
+
+/**
+ * @classdesc
+ * Multi-polygon geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiPolygon = function(coordinates, opt_layout) {
+
+ ol.geom.SimpleGeometry.call(this);
+
+ /**
+ * @type {Array.<Array.<number>>}
+ * @private
+ */
+ this.endss_ = [];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.flatInteriorPointsRevision_ = -1;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.flatInteriorPoints_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDelta_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxDeltaRevision_ = -1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.orientedRevision_ = -1;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.orientedFlatCoordinates_ = null;
+
+ this.setCoordinates(coordinates, opt_layout);
+
+};
+ol.inherits(ol.geom.MultiPolygon, ol.geom.SimpleGeometry);
+
+
+/**
+ * Append the passed polygon to this multipolygon.
+ * @param {ol.geom.Polygon} polygon Polygon.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.appendPolygon = function(polygon) {
+ goog.asserts.assert(polygon.getLayout() == this.layout,
+ 'layout of polygon should match layout');
+ /** @type {Array.<number>} */
+ var ends;
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = polygon.getFlatCoordinates().slice();
+ ends = polygon.getEnds().slice();
+ this.endss_.push();
+ } else {
+ var offset = this.flatCoordinates.length;
+ ol.array.extend(this.flatCoordinates, polygon.getFlatCoordinates());
+ ends = polygon.getEnds().slice();
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ ends[i] += offset;
+ }
+ }
+ this.endss_.push(ends);
+ this.changed();
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiPolygon} Clone.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.clone = function() {
+ var multiPolygon = new ol.geom.MultiPolygon(null);
+
+ var len = this.endss_.length;
+ var newEndss = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ newEndss[i] = this.endss_[i].slice();
+ }
+
+ multiPolygon.setFlatCoordinates(
+ this.layout, this.flatCoordinates.slice(), newEndss);
+ return multiPolygon;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiPolygon.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ if (this.maxDeltaRevision_ != this.getRevision()) {
+ this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getssMaxSquaredDelta(
+ this.flatCoordinates, 0, this.endss_, this.stride, 0));
+ this.maxDeltaRevision_ = this.getRevision();
+ }
+ return ol.geom.flat.closest.getssClosestPoint(
+ this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
+ this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiPolygon.prototype.containsXY = function(x, y) {
+ return ol.geom.flat.contains.linearRingssContainsXY(
+ this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, x, y);
+};
+
+
+/**
+ * Return the area of the multipolygon on projected plane.
+ * @return {number} Area (on projected plane).
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getArea = function() {
+ return ol.geom.flat.area.linearRingss(
+ this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride);
+};
+
+
+/**
+ * Get the coordinate array for this geometry. This array has the structure
+ * of a GeoJSON coordinate array for multi-polygons.
+ *
+ * @param {boolean=} opt_right Orient coordinates according to the right-hand
+ * rule (counter-clockwise for exterior and clockwise for interior rings).
+ * If `false`, coordinates will be oriented according to the left-hand rule
+ * (clockwise for exterior and counter-clockwise for interior rings).
+ * By default, coordinate orientation will depend on how the geometry was
+ * constructed.
+ * @return {Array.<Array.<Array.<ol.Coordinate>>>} Coordinates.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getCoordinates = function(opt_right) {
+ var flatCoordinates;
+ if (opt_right !== undefined) {
+ flatCoordinates = this.getOrientedFlatCoordinates().slice();
+ ol.geom.flat.orient.orientLinearRingss(
+ flatCoordinates, 0, this.endss_, this.stride, opt_right);
+ } else {
+ flatCoordinates = this.flatCoordinates;
+ }
+
+ return ol.geom.flat.inflate.coordinatesss(
+ flatCoordinates, 0, this.endss_, this.stride);
+};
+
+
+/**
+ * @return {Array.<Array.<number>>} Endss.
+ */
+ol.geom.MultiPolygon.prototype.getEndss = function() {
+ return this.endss_;
+};
+
+
+/**
+ * @return {Array.<number>} Flat interior points.
+ */
+ol.geom.MultiPolygon.prototype.getFlatInteriorPoints = function() {
+ if (this.flatInteriorPointsRevision_ != this.getRevision()) {
+ var flatCenters = ol.geom.flat.center.linearRingss(
+ this.flatCoordinates, 0, this.endss_, this.stride);
+ this.flatInteriorPoints_ = ol.geom.flat.interiorpoint.linearRingss(
+ this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
+ flatCenters);
+ this.flatInteriorPointsRevision_ = this.getRevision();
+ }
+ return this.flatInteriorPoints_;
+};
+
+
+/**
+ * Return the interior points as {@link ol.geom.MultiPoint multipoint}.
+ * @return {ol.geom.MultiPoint} Interior points.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getInteriorPoints = function() {
+ var interiorPoints = new ol.geom.MultiPoint(null);
+ interiorPoints.setFlatCoordinates(ol.geom.GeometryLayout.XY,
+ this.getFlatInteriorPoints().slice());
+ return interiorPoints;
+};
+
+
+/**
+ * @return {Array.<number>} Oriented flat coordinates.
+ */
+ol.geom.MultiPolygon.prototype.getOrientedFlatCoordinates = function() {
+ if (this.orientedRevision_ != this.getRevision()) {
+ var flatCoordinates = this.flatCoordinates;
+ if (ol.geom.flat.orient.linearRingssAreOriented(
+ flatCoordinates, 0, this.endss_, this.stride)) {
+ this.orientedFlatCoordinates_ = flatCoordinates;
+ } else {
+ this.orientedFlatCoordinates_ = flatCoordinates.slice();
+ this.orientedFlatCoordinates_.length =
+ ol.geom.flat.orient.orientLinearRingss(
+ this.orientedFlatCoordinates_, 0, this.endss_, this.stride);
+ }
+ this.orientedRevision_ = this.getRevision();
+ }
+ return this.orientedFlatCoordinates_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.MultiPolygon.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
+ var simplifiedFlatCoordinates = [];
+ var simplifiedEndss = [];
+ simplifiedFlatCoordinates.length = ol.geom.flat.simplify.quantizess(
+ this.flatCoordinates, 0, this.endss_, this.stride,
+ Math.sqrt(squaredTolerance),
+ simplifiedFlatCoordinates, 0, simplifiedEndss);
+ var simplifiedMultiPolygon = new ol.geom.MultiPolygon(null);
+ simplifiedMultiPolygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEndss);
+ return simplifiedMultiPolygon;
+};
+
+
+/**
+ * Return the polygon at the specified index.
+ * @param {number} index Index.
+ * @return {ol.geom.Polygon} Polygon.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getPolygon = function(index) {
+ goog.asserts.assert(0 <= index && index < this.endss_.length,
+ 'index should be in between 0 and the length of this.endss_');
+ if (index < 0 || this.endss_.length <= index) {
+ return null;
+ }
+ var offset;
+ if (index === 0) {
+ offset = 0;
+ } else {
+ var prevEnds = this.endss_[index - 1];
+ offset = prevEnds[prevEnds.length - 1];
+ }
+ var ends = this.endss_[index].slice();
+ var end = ends[ends.length - 1];
+ if (offset !== 0) {
+ var i, ii;
+ for (i = 0, ii = ends.length; i < ii; ++i) {
+ ends[i] -= offset;
+ }
+ }
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(
+ this.layout, this.flatCoordinates.slice(offset, end), ends);
+ return polygon;
+};
+
+
+/**
+ * Return the polygons of this multipolygon.
+ * @return {Array.<ol.geom.Polygon>} Polygons.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getPolygons = function() {
+ var layout = this.layout;
+ var flatCoordinates = this.flatCoordinates;
+ var endss = this.endss_;
+ var polygons = [];
+ var offset = 0;
+ var i, ii, j, jj;
+ for (i = 0, ii = endss.length; i < ii; ++i) {
+ var ends = endss[i].slice();
+ var end = ends[ends.length - 1];
+ if (offset !== 0) {
+ for (j = 0, jj = ends.length; j < jj; ++j) {
+ ends[j] -= offset;
+ }
+ }
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(
+ layout, flatCoordinates.slice(offset, end), ends);
+ polygons.push(polygon);
+ offset = end;
+ }
+ return polygons;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.getType = function() {
+ return ol.geom.GeometryType.MULTI_POLYGON;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.intersectsExtent = function(extent) {
+ return ol.geom.flat.intersectsextent.linearRingss(
+ this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, extent);
+};
+
+
+/**
+ * Set the coordinates of the multipolygon.
+ * @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api stable
+ */
+ol.geom.MultiPolygon.prototype.setCoordinates = function(coordinates, opt_layout) {
+ if (!coordinates) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.endss_);
+ } else {
+ this.setLayout(opt_layout, coordinates, 3);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ var endss = ol.geom.flat.deflate.coordinatesss(
+ this.flatCoordinates, 0, coordinates, this.stride, this.endss_);
+ if (endss.length === 0) {
+ this.flatCoordinates.length = 0;
+ } else {
+ var lastEnds = endss[endss.length - 1];
+ this.flatCoordinates.length = lastEnds.length === 0 ?
+ 0 : lastEnds[lastEnds.length - 1];
+ }
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {Array.<Array.<number>>} endss Endss.
+ */
+ol.geom.MultiPolygon.prototype.setFlatCoordinates = function(layout, flatCoordinates, endss) {
+ goog.asserts.assert(endss, 'endss must be truthy');
+ if (!flatCoordinates || flatCoordinates.length === 0) {
+ goog.asserts.assert(endss.length === 0, 'the length of endss should be 0');
+ } else {
+ goog.asserts.assert(endss.length > 0, 'endss cannot be an empty array');
+ var ends = endss[endss.length - 1];
+ goog.asserts.assert(flatCoordinates.length == ends[ends.length - 1],
+ 'the length of flatCoordinates should be the last value of ends');
+ }
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.endss_ = endss;
+ this.changed();
+};
+
+
+/**
+ * @param {Array.<ol.geom.Polygon>} polygons Polygons.
+ */
+ol.geom.MultiPolygon.prototype.setPolygons = function(polygons) {
+ var layout = this.getLayout();
+ var flatCoordinates = [];
+ var endss = [];
+ var i, ii, ends;
+ for (i = 0, ii = polygons.length; i < ii; ++i) {
+ var polygon = polygons[i];
+ if (i === 0) {
+ layout = polygon.getLayout();
+ } else {
+ // FIXME better handle the case of non-matching layouts
+ goog.asserts.assert(polygon.getLayout() == layout,
+ 'layout of polygon should be layout');
+ }
+ var offset = flatCoordinates.length;
+ ends = polygon.getEnds();
+ var j, jj;
+ for (j = 0, jj = ends.length; j < jj; ++j) {
+ ends[j] += offset;
+ }
+ ol.array.extend(flatCoordinates, polygon.getFlatCoordinates());
+ endss.push(ends);
+ }
+ this.setFlatCoordinates(layout, flatCoordinates, endss);
+};
+
+goog.provide('ol.format.EsriJSON');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.format.Feature');
+goog.require('ol.format.JSONFeature');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.geom.flat.orient');
+goog.require('ol.object');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the EsriJSON format.
+ *
+ * @constructor
+ * @extends {ol.format.JSONFeature}
+ * @param {olx.format.EsriJSONOptions=} opt_options Options.
+ * @api
+ */
+ol.format.EsriJSON = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.JSONFeature.call(this);
+
+ /**
+ * Name of the geometry attribute for features.
+ * @type {string|undefined}
+ * @private
+ */
+ this.geometryName_ = options.geometryName;
+
+};
+ol.inherits(ol.format.EsriJSON, ol.format.JSONFeature);
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @private
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.EsriJSON.readGeometry_ = function(object, opt_options) {
+ if (!object) {
+ return null;
+ }
+ var type;
+ if (goog.isNumber(object.x) && goog.isNumber(object.y)) {
+ type = ol.geom.GeometryType.POINT;
+ } else if (object.points) {
+ type = ol.geom.GeometryType.MULTI_POINT;
+ } else if (object.paths) {
+ if (object.paths.length === 1) {
+ type = ol.geom.GeometryType.LINE_STRING;
+ } else {
+ type = ol.geom.GeometryType.MULTI_LINE_STRING;
+ }
+ } else if (object.rings) {
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ var rings = ol.format.EsriJSON.convertRings_(object.rings, layout);
+ object = /** @type {EsriJSONGeometry} */(ol.object.assign({}, object));
+ if (rings.length === 1) {
+ type = ol.geom.GeometryType.POLYGON;
+ object.rings = rings[0];
+ } else {
+ type = ol.geom.GeometryType.MULTI_POLYGON;
+ object.rings = rings;
+ }
+ }
+ goog.asserts.assert(type, 'geometry type should be defined');
+ var geometryReader = ol.format.EsriJSON.GEOMETRY_READERS_[type];
+ goog.asserts.assert(geometryReader,
+ 'geometryReader should be defined');
+ return /** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(
+ geometryReader(object), false, opt_options));
+};
+
+
+/**
+ * Determines inner and outer rings.
+ * Checks if any polygons in this array contain any other polygons in this
+ * array. It is used for checking for holes.
+ * Logic inspired by: https://github.com/Esri/terraformer-arcgis-parser
+ * @param {Array.<!Array.<!Array.<number>>>} rings Rings.
+ * @param {ol.geom.GeometryLayout} layout Geometry layout.
+ * @private
+ * @return {Array.<!Array.<!Array.<number>>>} Transoformed rings.
+ */
+ol.format.EsriJSON.convertRings_ = function(rings, layout) {
+ var outerRings = [];
+ var holes = [];
+ var i, ii;
+ for (i = 0, ii = rings.length; i < ii; ++i) {
+ var flatRing = ol.array.flatten(rings[i]);
+ // is this ring an outer ring? is it clockwise?
+ var clockwise = ol.geom.flat.orient.linearRingIsClockwise(flatRing, 0,
+ flatRing.length, layout.length);
+ if (clockwise) {
+ outerRings.push([rings[i]]);
+ } else {
+ holes.push(rings[i]);
+ }
+ }
+ while (holes.length) {
+ var hole = holes.shift();
+ var matched = false;
+ // loop over all outer rings and see if they contain our hole.
+ for (i = outerRings.length - 1; i >= 0; i--) {
+ var outerRing = outerRings[i][0];
+ if (ol.extent.containsExtent(new ol.geom.LinearRing(
+ outerRing).getExtent(),
+ new ol.geom.LinearRing(hole).getExtent())) {
+ // the hole is contained push it into our polygon
+ outerRings[i].push(hole);
+ matched = true;
+ break;
+ }
+ }
+ if (!matched) {
+ // no outer rings contain this hole turn it into and outer
+ // ring (reverse it)
+ outerRings.push([hole.reverse()]);
+ }
+ }
+ return outerRings;
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} Point.
+ */
+ol.format.EsriJSON.readPointGeometry_ = function(object) {
+ goog.asserts.assert(goog.isNumber(object.x), 'object.x should be number');
+ goog.asserts.assert(goog.isNumber(object.y), 'object.y should be number');
+ var point;
+ if (object.m !== undefined && object.z !== undefined) {
+ point = new ol.geom.Point([object.x, object.y, object.z, object.m],
+ ol.geom.GeometryLayout.XYZM);
+ } else if (object.z !== undefined) {
+ point = new ol.geom.Point([object.x, object.y, object.z],
+ ol.geom.GeometryLayout.XYZ);
+ } else if (object.m !== undefined) {
+ point = new ol.geom.Point([object.x, object.y, object.m],
+ ol.geom.GeometryLayout.XYM);
+ } else {
+ point = new ol.geom.Point([object.x, object.y]);
+ }
+ return point;
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} LineString.
+ */
+ol.format.EsriJSON.readLineStringGeometry_ = function(object) {
+ goog.asserts.assert(Array.isArray(object.paths),
+ 'object.paths should be an array');
+ goog.asserts.assert(object.paths.length === 1,
+ 'object.paths array length should be 1');
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ return new ol.geom.LineString(object.paths[0], layout);
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} MultiLineString.
+ */
+ol.format.EsriJSON.readMultiLineStringGeometry_ = function(object) {
+ goog.asserts.assert(Array.isArray(object.paths),
+ 'object.paths should be an array');
+ goog.asserts.assert(object.paths.length > 1,
+ 'object.paths array length should be more than 1');
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ return new ol.geom.MultiLineString(object.paths, layout);
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.GeometryLayout} The geometry layout to use.
+ */
+ol.format.EsriJSON.getGeometryLayout_ = function(object) {
+ var layout = ol.geom.GeometryLayout.XY;
+ if (object.hasZ === true && object.hasM === true) {
+ layout = ol.geom.GeometryLayout.XYZM;
+ } else if (object.hasZ === true) {
+ layout = ol.geom.GeometryLayout.XYZ;
+ } else if (object.hasM === true) {
+ layout = ol.geom.GeometryLayout.XYM;
+ }
+ return layout;
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} MultiPoint.
+ */
+ol.format.EsriJSON.readMultiPointGeometry_ = function(object) {
+ goog.asserts.assert(object.points, 'object.points should be defined');
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ return new ol.geom.MultiPoint(object.points, layout);
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} MultiPolygon.
+ */
+ol.format.EsriJSON.readMultiPolygonGeometry_ = function(object) {
+ goog.asserts.assert(object.rings);
+ goog.asserts.assert(object.rings.length > 1,
+ 'object.rings should have length larger than 1');
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ return new ol.geom.MultiPolygon(
+ /** @type {Array.<Array.<Array.<Array.<number>>>>} */(object.rings),
+ layout);
+};
+
+
+/**
+ * @param {EsriJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Geometry} Polygon.
+ */
+ol.format.EsriJSON.readPolygonGeometry_ = function(object) {
+ goog.asserts.assert(object.rings);
+ var layout = ol.format.EsriJSON.getGeometryLayout_(object);
+ return new ol.geom.Polygon(object.rings, layout);
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONGeometry} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writePointGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Point,
+ 'geometry should be an ol.geom.Point');
+ var coordinates = geometry.getCoordinates();
+ var layout = geometry.getLayout();
+ if (layout === ol.geom.GeometryLayout.XYZ) {
+ return /** @type {EsriJSONPoint} */ ({
+ x: coordinates[0],
+ y: coordinates[1],
+ z: coordinates[2]
+ });
+ } else if (layout === ol.geom.GeometryLayout.XYM) {
+ return /** @type {EsriJSONPoint} */ ({
+ x: coordinates[0],
+ y: coordinates[1],
+ m: coordinates[2]
+ });
+ } else if (layout === ol.geom.GeometryLayout.XYZM) {
+ return /** @type {EsriJSONPoint} */ ({
+ x: coordinates[0],
+ y: coordinates[1],
+ z: coordinates[2],
+ m: coordinates[3]
+ });
+ } else if (layout === ol.geom.GeometryLayout.XY) {
+ return /** @type {EsriJSONPoint} */ ({
+ x: coordinates[0],
+ y: coordinates[1]
+ });
+ } else {
+ goog.asserts.fail('Unknown geometry layout');
+ }
+};
+
+
+/**
+ * @param {ol.geom.SimpleGeometry} geometry Geometry.
+ * @private
+ * @return {Object} Object with boolean hasZ and hasM keys.
+ */
+ol.format.EsriJSON.getHasZM_ = function(geometry) {
+ var layout = geometry.getLayout();
+ return {
+ hasZ: (layout === ol.geom.GeometryLayout.XYZ ||
+ layout === ol.geom.GeometryLayout.XYZM),
+ hasM: (layout === ol.geom.GeometryLayout.XYM ||
+ layout === ol.geom.GeometryLayout.XYZM)
+ };
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONPolyline} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writeLineStringGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.LineString,
+ 'geometry should be an ol.geom.LineString');
+ var hasZM = ol.format.EsriJSON.getHasZM_(geometry);
+ return /** @type {EsriJSONPolyline} */ ({
+ hasZ: hasZM.hasZ,
+ hasM: hasZM.hasM,
+ paths: [geometry.getCoordinates()]
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONPolygon} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writePolygonGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Polygon,
+ 'geometry should be an ol.geom.Polygon');
+ // Esri geometries use the left-hand rule
+ var hasZM = ol.format.EsriJSON.getHasZM_(geometry);
+ return /** @type {EsriJSONPolygon} */ ({
+ hasZ: hasZM.hasZ,
+ hasM: hasZM.hasM,
+ rings: geometry.getCoordinates(false)
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONPolyline} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writeMultiLineStringGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiLineString,
+ 'geometry should be an ol.geom.MultiLineString');
+ var hasZM = ol.format.EsriJSON.getHasZM_(geometry);
+ return /** @type {EsriJSONPolyline} */ ({
+ hasZ: hasZM.hasZ,
+ hasM: hasZM.hasM,
+ paths: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONMultipoint} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writeMultiPointGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiPoint,
+ 'geometry should be an ol.geom.MultiPoint');
+ var hasZM = ol.format.EsriJSON.getHasZM_(geometry);
+ return /** @type {EsriJSONMultipoint} */ ({
+ hasZ: hasZM.hasZ,
+ hasM: hasZM.hasM,
+ points: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONPolygon} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writeMultiPolygonGeometry_ = function(geometry,
+ opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiPolygon,
+ 'geometry should be an ol.geom.MultiPolygon');
+ var hasZM = ol.format.EsriJSON.getHasZM_(geometry);
+ var coordinates = geometry.getCoordinates(false);
+ var output = [];
+ for (var i = 0; i < coordinates.length; i++) {
+ for (var x = coordinates[i].length - 1; x >= 0; x--) {
+ output.push(coordinates[i][x]);
+ }
+ }
+ return /** @type {EsriJSONPolygon} */ ({
+ hasZ: hasZM.hasZ,
+ hasM: hasZM.hasM,
+ rings: output
+ });
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<ol.geom.GeometryType, function(EsriJSONGeometry): ol.geom.Geometry>}
+ */
+ol.format.EsriJSON.GEOMETRY_READERS_ = {};
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.POINT] =
+ ol.format.EsriJSON.readPointGeometry_;
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.LINE_STRING] =
+ ol.format.EsriJSON.readLineStringGeometry_;
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.POLYGON] =
+ ol.format.EsriJSON.readPolygonGeometry_;
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.MULTI_POINT] =
+ ol.format.EsriJSON.readMultiPointGeometry_;
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.MULTI_LINE_STRING] =
+ ol.format.EsriJSON.readMultiLineStringGeometry_;
+ol.format.EsriJSON.GEOMETRY_READERS_[ol.geom.GeometryType.MULTI_POLYGON] =
+ ol.format.EsriJSON.readMultiPolygonGeometry_;
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<string, function(ol.geom.Geometry, olx.format.WriteOptions=): (EsriJSONGeometry)>}
+ */
+ol.format.EsriJSON.GEOMETRY_WRITERS_ = {};
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.POINT] =
+ ol.format.EsriJSON.writePointGeometry_;
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.LINE_STRING] =
+ ol.format.EsriJSON.writeLineStringGeometry_;
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.POLYGON] =
+ ol.format.EsriJSON.writePolygonGeometry_;
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.MULTI_POINT] =
+ ol.format.EsriJSON.writeMultiPointGeometry_;
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.MULTI_LINE_STRING] =
+ ol.format.EsriJSON.writeMultiLineStringGeometry_;
+ol.format.EsriJSON.GEOMETRY_WRITERS_[ol.geom.GeometryType.MULTI_POLYGON] =
+ ol.format.EsriJSON.writeMultiPolygonGeometry_;
+
+
+/**
+ * Read a feature from a EsriJSON Feature source. Only works for Feature,
+ * use `readFeatures` to read FeatureCollection source.
+ *
+ * @function
+ * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api
+ */
+ol.format.EsriJSON.prototype.readFeature;
+
+
+/**
+ * Read all features from a EsriJSON source. Works with both Feature and
+ * FeatureCollection sources.
+ *
+ * @function
+ * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api
+ */
+ol.format.EsriJSON.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.EsriJSON.prototype.readFeatureFromObject = function(
+ object, opt_options) {
+ var esriJSONFeature = /** @type {EsriJSONFeature} */ (object);
+ goog.asserts.assert(esriJSONFeature.geometry ||
+ esriJSONFeature.attributes,
+ 'geometry or attributes should be defined');
+ var geometry = ol.format.EsriJSON.readGeometry_(esriJSONFeature.geometry,
+ opt_options);
+ var feature = new ol.Feature();
+ if (this.geometryName_) {
+ feature.setGeometryName(this.geometryName_);
+ }
+ feature.setGeometry(geometry);
+ if (opt_options && opt_options.idField &&
+ esriJSONFeature.attributes[opt_options.idField]) {
+ goog.asserts.assert(
+ goog.isNumber(esriJSONFeature.attributes[opt_options.idField]),
+ 'objectIdFieldName value should be a number');
+ feature.setId(/** @type {number} */(
+ esriJSONFeature.attributes[opt_options.idField]));
+ }
+ if (esriJSONFeature.attributes) {
+ feature.setProperties(esriJSONFeature.attributes);
+ }
+ return feature;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.EsriJSON.prototype.readFeaturesFromObject = function(
+ object, opt_options) {
+ var esriJSONObject = /** @type {EsriJSONObject} */ (object);
+ var options = opt_options ? opt_options : {};
+ if (esriJSONObject.features) {
+ var esriJSONFeatureCollection = /** @type {EsriJSONFeatureCollection} */
+ (object);
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ var esriJSONFeatures = esriJSONFeatureCollection.features;
+ var i, ii;
+ options.idField = object.objectIdFieldName;
+ for (i = 0, ii = esriJSONFeatures.length; i < ii; ++i) {
+ features.push(this.readFeatureFromObject(esriJSONFeatures[i],
+ options));
+ }
+ return features;
+ } else {
+ return [this.readFeatureFromObject(object, options)];
+ }
+};
+
+
+/**
+ * Read a geometry from a EsriJSON source.
+ *
+ * @function
+ * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.geom.Geometry} Geometry.
+ * @api
+ */
+ol.format.EsriJSON.prototype.readGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.EsriJSON.prototype.readGeometryFromObject = function(
+ object, opt_options) {
+ return ol.format.EsriJSON.readGeometry_(
+ /** @type {EsriJSONGeometry} */ (object), opt_options);
+};
+
+
+/**
+ * Read the projection from a EsriJSON source.
+ *
+ * @function
+ * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api
+ */
+ol.format.EsriJSON.prototype.readProjection;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.EsriJSON.prototype.readProjectionFromObject = function(object) {
+ var esriJSONObject = /** @type {EsriJSONObject} */ (object);
+ if (esriJSONObject.spatialReference && esriJSONObject.spatialReference.wkid) {
+ var crs = esriJSONObject.spatialReference.wkid;
+ return ol.proj.get('EPSG:' + crs);
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {EsriJSONGeometry} EsriJSON geometry.
+ */
+ol.format.EsriJSON.writeGeometry_ = function(geometry, opt_options) {
+ var geometryWriter = ol.format.EsriJSON.GEOMETRY_WRITERS_[geometry.getType()];
+ goog.asserts.assert(geometryWriter, 'geometryWriter should be defined');
+ return geometryWriter(/** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, true, opt_options)),
+ opt_options);
+};
+
+
+/**
+ * Encode a geometry as a EsriJSON string.
+ *
+ * @function
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} EsriJSON.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeGeometry;
+
+
+/**
+ * Encode a geometry as a EsriJSON object.
+ *
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {EsriJSONGeometry} Object.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeGeometryObject = function(geometry,
+ opt_options) {
+ return ol.format.EsriJSON.writeGeometry_(geometry,
+ this.adaptOptions(opt_options));
+};
+
+
+/**
+ * Encode a feature as a EsriJSON Feature string.
+ *
+ * @function
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} EsriJSON.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeFeature;
+
+
+/**
+ * Encode a feature as a esriJSON Feature object.
+ *
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {Object} Object.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeFeatureObject = function(
+ feature, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var object = {};
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ object['geometry'] =
+ ol.format.EsriJSON.writeGeometry_(geometry, opt_options);
+ }
+ var properties = feature.getProperties();
+ delete properties[feature.getGeometryName()];
+ if (!ol.object.isEmpty(properties)) {
+ object['attributes'] = properties;
+ } else {
+ object['attributes'] = {};
+ }
+ if (opt_options && opt_options.featureProjection) {
+ object['spatialReference'] = /** @type {EsriJSONCRS} */({
+ wkid: ol.proj.get(
+ opt_options.featureProjection).getCode().split(':').pop()
+ });
+ }
+ return object;
+};
+
+
+/**
+ * Encode an array of features as EsriJSON.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} EsriJSON.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features as a EsriJSON object.
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {Object} EsriJSON Object.
+ * @api
+ */
+ol.format.EsriJSON.prototype.writeFeaturesObject = function(features, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var objects = [];
+ var i, ii;
+ for (i = 0, ii = features.length; i < ii; ++i) {
+ objects.push(this.writeFeatureObject(features[i], opt_options));
+ }
+ return /** @type {EsriJSONFeatureCollection} */ ({
+ 'features': objects
+ });
+};
+
+goog.provide('ol.geom.GeometryCollection');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.object');
+
+
+/**
+ * @classdesc
+ * An array of {@link ol.geom.Geometry} objects.
+ *
+ * @constructor
+ * @extends {ol.geom.Geometry}
+ * @param {Array.<ol.geom.Geometry>=} opt_geometries Geometries.
+ * @api stable
+ */
+ol.geom.GeometryCollection = function(opt_geometries) {
+
+ ol.geom.Geometry.call(this);
+
+ /**
+ * @private
+ * @type {Array.<ol.geom.Geometry>}
+ */
+ this.geometries_ = opt_geometries ? opt_geometries : null;
+
+ this.listenGeometriesChange_();
+};
+ol.inherits(ol.geom.GeometryCollection, ol.geom.Geometry);
+
+
+/**
+ * @param {Array.<ol.geom.Geometry>} geometries Geometries.
+ * @private
+ * @return {Array.<ol.geom.Geometry>} Cloned geometries.
+ */
+ol.geom.GeometryCollection.cloneGeometries_ = function(geometries) {
+ var clonedGeometries = [];
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ clonedGeometries.push(geometries[i].clone());
+ }
+ return clonedGeometries;
+};
+
+
+/**
+ * @private
+ */
+ol.geom.GeometryCollection.prototype.unlistenGeometriesChange_ = function() {
+ var i, ii;
+ if (!this.geometries_) {
+ return;
+ }
+ for (i = 0, ii = this.geometries_.length; i < ii; ++i) {
+ ol.events.unlisten(
+ this.geometries_[i], ol.events.EventType.CHANGE,
+ this.changed, this);
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.geom.GeometryCollection.prototype.listenGeometriesChange_ = function() {
+ var i, ii;
+ if (!this.geometries_) {
+ return;
+ }
+ for (i = 0, ii = this.geometries_.length; i < ii; ++i) {
+ ol.events.listen(
+ this.geometries_[i], ol.events.EventType.CHANGE,
+ this.changed, this);
+ }
+};
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.GeometryCollection} Clone.
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.clone = function() {
+ var geometryCollection = new ol.geom.GeometryCollection(null);
+ geometryCollection.setGeometries(this.geometries_);
+ return geometryCollection;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ if (minSquaredDistance <
+ ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
+ return minSquaredDistance;
+ }
+ var geometries = this.geometries_;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ minSquaredDistance = geometries[i].closestPointXY(
+ x, y, closestPoint, minSquaredDistance);
+ }
+ return minSquaredDistance;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.containsXY = function(x, y) {
+ var geometries = this.geometries_;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ if (geometries[i].containsXY(x, y)) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.computeExtent = function(extent) {
+ ol.extent.createOrUpdateEmpty(extent);
+ var geometries = this.geometries_;
+ for (var i = 0, ii = geometries.length; i < ii; ++i) {
+ ol.extent.extend(extent, geometries[i].getExtent());
+ }
+ return extent;
+};
+
+
+/**
+ * Return the geometries that make up this geometry collection.
+ * @return {Array.<ol.geom.Geometry>} Geometries.
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.getGeometries = function() {
+ return ol.geom.GeometryCollection.cloneGeometries_(this.geometries_);
+};
+
+
+/**
+ * @return {Array.<ol.geom.Geometry>} Geometries.
+ */
+ol.geom.GeometryCollection.prototype.getGeometriesArray = function() {
+ return this.geometries_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.getSimplifiedGeometry = function(squaredTolerance) {
+ if (this.simplifiedGeometryRevision != this.getRevision()) {
+ ol.object.clear(this.simplifiedGeometryCache);
+ this.simplifiedGeometryMaxMinSquaredTolerance = 0;
+ this.simplifiedGeometryRevision = this.getRevision();
+ }
+ if (squaredTolerance < 0 ||
+ (this.simplifiedGeometryMaxMinSquaredTolerance !== 0 &&
+ squaredTolerance < this.simplifiedGeometryMaxMinSquaredTolerance)) {
+ return this;
+ }
+ var key = squaredTolerance.toString();
+ if (this.simplifiedGeometryCache.hasOwnProperty(key)) {
+ return this.simplifiedGeometryCache[key];
+ } else {
+ var simplifiedGeometries = [];
+ var geometries = this.geometries_;
+ var simplified = false;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ var geometry = geometries[i];
+ var simplifiedGeometry = geometry.getSimplifiedGeometry(squaredTolerance);
+ simplifiedGeometries.push(simplifiedGeometry);
+ if (simplifiedGeometry !== geometry) {
+ simplified = true;
+ }
+ }
+ if (simplified) {
+ var simplifiedGeometryCollection = new ol.geom.GeometryCollection(null);
+ simplifiedGeometryCollection.setGeometriesArray(simplifiedGeometries);
+ this.simplifiedGeometryCache[key] = simplifiedGeometryCollection;
+ return simplifiedGeometryCollection;
+ } else {
+ this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance;
+ return this;
+ }
+ }
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.getType = function() {
+ return ol.geom.GeometryType.GEOMETRY_COLLECTION;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.intersectsExtent = function(extent) {
+ var geometries = this.geometries_;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ if (geometries[i].intersectsExtent(extent)) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * @return {boolean} Is empty.
+ */
+ol.geom.GeometryCollection.prototype.isEmpty = function() {
+ return this.geometries_.length === 0;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.geom.GeometryCollection.prototype.rotate = function(angle, anchor) {
+ var geometries = this.geometries_;
+ for (var i = 0, ii = geometries.length; i < ii; ++i) {
+ geometries[i].rotate(angle, anchor);
+ }
+ this.changed();
+};
+
+
+/**
+ * Set the geometries that make up this geometry collection.
+ * @param {Array.<ol.geom.Geometry>} geometries Geometries.
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.setGeometries = function(geometries) {
+ this.setGeometriesArray(
+ ol.geom.GeometryCollection.cloneGeometries_(geometries));
+};
+
+
+/**
+ * @param {Array.<ol.geom.Geometry>} geometries Geometries.
+ */
+ol.geom.GeometryCollection.prototype.setGeometriesArray = function(geometries) {
+ this.unlistenGeometriesChange_();
+ this.geometries_ = geometries;
+ this.listenGeometriesChange_();
+ this.changed();
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.GeometryCollection.prototype.applyTransform = function(transformFn) {
+ var geometries = this.geometries_;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ geometries[i].applyTransform(transformFn);
+ }
+ this.changed();
+};
+
+
+/**
+ * Translate the geometry.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @api
+ */
+ol.geom.GeometryCollection.prototype.translate = function(deltaX, deltaY) {
+ var geometries = this.geometries_;
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ geometries[i].translate(deltaX, deltaY);
+ }
+ this.changed();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.disposeInternal = function() {
+ this.unlistenGeometriesChange_();
+ ol.geom.Geometry.prototype.disposeInternal.call(this);
+};
+
+// TODO: serialize dataProjection as crs member when writing
+// see https://github.com/openlayers/ol3/issues/2078
+
+goog.provide('ol.format.GeoJSON');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.JSONFeature');
+goog.require('ol.geom.GeometryCollection');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.object');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the GeoJSON format.
+ *
+ * @constructor
+ * @extends {ol.format.JSONFeature}
+ * @param {olx.format.GeoJSONOptions=} opt_options Options.
+ * @api stable
+ */
+ol.format.GeoJSON = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.JSONFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get(
+ options.defaultDataProjection ?
+ options.defaultDataProjection : 'EPSG:4326');
+
+
+ /**
+ * Name of the geometry attribute for features.
+ * @type {string|undefined}
+ * @private
+ */
+ this.geometryName_ = options.geometryName;
+
+};
+ol.inherits(ol.format.GeoJSON, ol.format.JSONFeature);
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.GeoJSON.EXTENSIONS_ = ['.geojson'];
+
+
+/**
+ * @param {GeoJSONGeometry|GeoJSONGeometryCollection} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @private
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.GeoJSON.readGeometry_ = function(object, opt_options) {
+ if (!object) {
+ return null;
+ }
+ var geometryReader = ol.format.GeoJSON.GEOMETRY_READERS_[object.type];
+ goog.asserts.assert(geometryReader, 'geometryReader should be defined');
+ return /** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(
+ geometryReader(object), false, opt_options));
+};
+
+
+/**
+ * @param {GeoJSONGeometryCollection} object Object.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @private
+ * @return {ol.geom.GeometryCollection} Geometry collection.
+ */
+ol.format.GeoJSON.readGeometryCollectionGeometry_ = function(
+ object, opt_options) {
+ goog.asserts.assert(object.type == 'GeometryCollection',
+ 'object.type should be GeometryCollection');
+ var geometries = object.geometries.map(
+ /**
+ * @param {GeoJSONGeometry} geometry Geometry.
+ * @return {ol.geom.Geometry} geometry Geometry.
+ */
+ function(geometry) {
+ return ol.format.GeoJSON.readGeometry_(geometry, opt_options);
+ });
+ return new ol.geom.GeometryCollection(geometries);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Point} Point.
+ */
+ol.format.GeoJSON.readPointGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'Point',
+ 'object.type should be Point');
+ return new ol.geom.Point(object.coordinates);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.LineString} LineString.
+ */
+ol.format.GeoJSON.readLineStringGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'LineString',
+ 'object.type should be LineString');
+ return new ol.geom.LineString(object.coordinates);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.MultiLineString} MultiLineString.
+ */
+ol.format.GeoJSON.readMultiLineStringGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'MultiLineString',
+ 'object.type should be MultiLineString');
+ return new ol.geom.MultiLineString(object.coordinates);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.MultiPoint} MultiPoint.
+ */
+ol.format.GeoJSON.readMultiPointGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'MultiPoint',
+ 'object.type should be MultiPoint');
+ return new ol.geom.MultiPoint(object.coordinates);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.MultiPolygon} MultiPolygon.
+ */
+ol.format.GeoJSON.readMultiPolygonGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'MultiPolygon',
+ 'object.type should be MultiPolygon');
+ return new ol.geom.MultiPolygon(object.coordinates);
+};
+
+
+/**
+ * @param {GeoJSONGeometry} object Object.
+ * @private
+ * @return {ol.geom.Polygon} Polygon.
+ */
+ol.format.GeoJSON.readPolygonGeometry_ = function(object) {
+ goog.asserts.assert(object.type == 'Polygon',
+ 'object.type should be Polygon');
+ return new ol.geom.Polygon(object.coordinates);
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry|GeoJSONGeometryCollection} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writeGeometry_ = function(geometry, opt_options) {
+ var geometryWriter = ol.format.GeoJSON.GEOMETRY_WRITERS_[geometry.getType()];
+ goog.asserts.assert(geometryWriter, 'geometryWriter should be defined');
+ return geometryWriter(/** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, true, opt_options)),
+ opt_options);
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @private
+ * @return {GeoJSONGeometryCollection} Empty GeoJSON geometry collection.
+ */
+ol.format.GeoJSON.writeEmptyGeometryCollectionGeometry_ = function(geometry) {
+ return /** @type {GeoJSONGeometryCollection} */ ({
+ type: 'GeometryCollection',
+ geometries: []
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometryCollection} GeoJSON geometry collection.
+ */
+ol.format.GeoJSON.writeGeometryCollectionGeometry_ = function(
+ geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.GeometryCollection,
+ 'geometry should be an ol.geom.GeometryCollection');
+ var geometries = geometry.getGeometriesArray().map(function(geometry) {
+ var options = ol.object.assign({}, opt_options);
+ delete options.featureProjection;
+ return ol.format.GeoJSON.writeGeometry_(geometry, options);
+ });
+ return /** @type {GeoJSONGeometryCollection} */ ({
+ type: 'GeometryCollection',
+ geometries: geometries
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writeLineStringGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.LineString,
+ 'geometry should be an ol.geom.LineString');
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'LineString',
+ coordinates: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writeMultiLineStringGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiLineString,
+ 'geometry should be an ol.geom.MultiLineString');
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'MultiLineString',
+ coordinates: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writeMultiPointGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiPoint,
+ 'geometry should be an ol.geom.MultiPoint');
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'MultiPoint',
+ coordinates: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writeMultiPolygonGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiPolygon,
+ 'geometry should be an ol.geom.MultiPolygon');
+ var right;
+ if (opt_options) {
+ right = opt_options.rightHanded;
+ }
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'MultiPolygon',
+ coordinates: geometry.getCoordinates(right)
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writePointGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Point,
+ 'geometry should be an ol.geom.Point');
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'Point',
+ coordinates: geometry.getCoordinates()
+ });
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @private
+ * @return {GeoJSONGeometry} GeoJSON geometry.
+ */
+ol.format.GeoJSON.writePolygonGeometry_ = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Polygon,
+ 'geometry should be an ol.geom.Polygon');
+ var right;
+ if (opt_options) {
+ right = opt_options.rightHanded;
+ }
+ return /** @type {GeoJSONGeometry} */ ({
+ type: 'Polygon',
+ coordinates: geometry.getCoordinates(right)
+ });
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<string, function(GeoJSONObject): ol.geom.Geometry>}
+ */
+ol.format.GeoJSON.GEOMETRY_READERS_ = {
+ 'Point': ol.format.GeoJSON.readPointGeometry_,
+ 'LineString': ol.format.GeoJSON.readLineStringGeometry_,
+ 'Polygon': ol.format.GeoJSON.readPolygonGeometry_,
+ 'MultiPoint': ol.format.GeoJSON.readMultiPointGeometry_,
+ 'MultiLineString': ol.format.GeoJSON.readMultiLineStringGeometry_,
+ 'MultiPolygon': ol.format.GeoJSON.readMultiPolygonGeometry_,
+ 'GeometryCollection': ol.format.GeoJSON.readGeometryCollectionGeometry_
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<string, function(ol.geom.Geometry, olx.format.WriteOptions=): (GeoJSONGeometry|GeoJSONGeometryCollection)>}
+ */
+ol.format.GeoJSON.GEOMETRY_WRITERS_ = {
+ 'Point': ol.format.GeoJSON.writePointGeometry_,
+ 'LineString': ol.format.GeoJSON.writeLineStringGeometry_,
+ 'Polygon': ol.format.GeoJSON.writePolygonGeometry_,
+ 'MultiPoint': ol.format.GeoJSON.writeMultiPointGeometry_,
+ 'MultiLineString': ol.format.GeoJSON.writeMultiLineStringGeometry_,
+ 'MultiPolygon': ol.format.GeoJSON.writeMultiPolygonGeometry_,
+ 'GeometryCollection': ol.format.GeoJSON.writeGeometryCollectionGeometry_,
+ 'Circle': ol.format.GeoJSON.writeEmptyGeometryCollectionGeometry_
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GeoJSON.prototype.getExtensions = function() {
+ return ol.format.GeoJSON.EXTENSIONS_;
+};
+
+
+/**
+ * Read a feature from a GeoJSON Feature source. Only works for Feature,
+ * use `readFeatures` to read FeatureCollection source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.readFeature;
+
+
+/**
+ * Read all features from a GeoJSON source. Works with both Feature and
+ * FeatureCollection sources.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GeoJSON.prototype.readFeatureFromObject = function(
+ object, opt_options) {
+ var geoJSONFeature = /** @type {GeoJSONFeature} */ (object);
+ goog.asserts.assert(geoJSONFeature.type == 'Feature',
+ 'geoJSONFeature.type should be Feature');
+ var geometry = ol.format.GeoJSON.readGeometry_(geoJSONFeature.geometry,
+ opt_options);
+ var feature = new ol.Feature();
+ if (this.geometryName_) {
+ feature.setGeometryName(this.geometryName_);
+ }
+ feature.setGeometry(geometry);
+ if (geoJSONFeature.id !== undefined) {
+ feature.setId(geoJSONFeature.id);
+ }
+ if (geoJSONFeature.properties) {
+ feature.setProperties(geoJSONFeature.properties);
+ }
+ return feature;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GeoJSON.prototype.readFeaturesFromObject = function(
+ object, opt_options) {
+ var geoJSONObject = /** @type {GeoJSONObject} */ (object);
+ if (geoJSONObject.type == 'Feature') {
+ return [this.readFeatureFromObject(object, opt_options)];
+ } else if (geoJSONObject.type == 'FeatureCollection') {
+ var geoJSONFeatureCollection = /** @type {GeoJSONFeatureCollection} */
+ (object);
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ var geoJSONFeatures = geoJSONFeatureCollection.features;
+ var i, ii;
+ for (i = 0, ii = geoJSONFeatures.length; i < ii; ++i) {
+ features.push(this.readFeatureFromObject(geoJSONFeatures[i],
+ opt_options));
+ }
+ return features;
+ } else {
+ goog.asserts.fail('Unknown geoJSONObject.type: ' + geoJSONObject.type);
+ return [];
+ }
+};
+
+
+/**
+ * Read a geometry from a GeoJSON source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.geom.Geometry} Geometry.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.readGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GeoJSON.prototype.readGeometryFromObject = function(
+ object, opt_options) {
+ return ol.format.GeoJSON.readGeometry_(
+ /** @type {GeoJSONGeometry} */ (object), opt_options);
+};
+
+
+/**
+ * Read the projection from a GeoJSON source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.readProjection;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GeoJSON.prototype.readProjectionFromObject = function(object) {
+ var geoJSONObject = /** @type {GeoJSONObject} */ (object);
+ var crs = geoJSONObject.crs;
+ if (crs) {
+ if (crs.type == 'name') {
+ return ol.proj.get(crs.properties.name);
+ } else if (crs.type == 'EPSG') {
+ // 'EPSG' is not part of the GeoJSON specification, but is generated by
+ // GeoServer.
+ // TODO: remove this when http://jira.codehaus.org/browse/GEOS-5996
+ // is fixed and widely deployed.
+ return ol.proj.get('EPSG:' + crs.properties.code);
+ } else {
+ goog.asserts.fail('Unknown crs.type: ' + crs.type);
+ return null;
+ }
+ } else {
+ return this.defaultDataProjection;
+ }
+};
+
+
+/**
+ * Encode a feature as a GeoJSON Feature string.
+ *
+ * @function
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} GeoJSON.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeFeature;
+
+
+/**
+ * Encode a feature as a GeoJSON Feature object.
+ *
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {GeoJSONFeature} Object.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeFeatureObject = function(feature, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+
+ var object = /** @type {GeoJSONFeature} */ ({
+ 'type': 'Feature'
+ });
+ var id = feature.getId();
+ if (id !== undefined) {
+ object.id = id;
+ }
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ object.geometry =
+ ol.format.GeoJSON.writeGeometry_(geometry, opt_options);
+ } else {
+ object.geometry = null;
+ }
+ var properties = feature.getProperties();
+ delete properties[feature.getGeometryName()];
+ if (!ol.object.isEmpty(properties)) {
+ object.properties = properties;
+ } else {
+ object.properties = null;
+ }
+ return object;
+};
+
+
+/**
+ * Encode an array of features as GeoJSON.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} GeoJSON.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features as a GeoJSON object.
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {GeoJSONFeatureCollection} GeoJSON Object.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeFeaturesObject = function(features, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var objects = [];
+ var i, ii;
+ for (i = 0, ii = features.length; i < ii; ++i) {
+ objects.push(this.writeFeatureObject(features[i], opt_options));
+ }
+ return /** @type {GeoJSONFeatureCollection} */ ({
+ type: 'FeatureCollection',
+ features: objects
+ });
+};
+
+
+/**
+ * Encode a geometry as a GeoJSON string.
+ *
+ * @function
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} GeoJSON.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeGeometry;
+
+
+/**
+ * Encode a geometry as a GeoJSON object.
+ *
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {GeoJSONGeometry|GeoJSONGeometryCollection} Object.
+ * @api stable
+ */
+ol.format.GeoJSON.prototype.writeGeometryObject = function(geometry,
+ opt_options) {
+ return ol.format.GeoJSON.writeGeometry_(geometry,
+ this.adaptOptions(opt_options));
+};
+
+goog.provide('ol.format.XMLFeature');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.format.Feature');
+goog.require('ol.format.FormatType');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for XML feature formats.
+ *
+ * @constructor
+ * @extends {ol.format.Feature}
+ */
+ol.format.XMLFeature = function() {
+
+ /**
+ * @type {XMLSerializer}
+ * @private
+ */
+ this.xmlSerializer_ = new XMLSerializer();
+
+ ol.format.Feature.call(this);
+};
+ol.inherits(ol.format.XMLFeature, ol.format.Feature);
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.getType = function() {
+ return ol.format.FormatType.XML;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.readFeature = function(source, opt_options) {
+ if (ol.xml.isDocument(source)) {
+ return this.readFeatureFromDocument(
+ /** @type {Document} */ (source), opt_options);
+ } else if (ol.xml.isNode(source)) {
+ return this.readFeatureFromNode(/** @type {Node} */ (source), opt_options);
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readFeatureFromDocument(doc, opt_options);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return null;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.XMLFeature.prototype.readFeatureFromDocument = function(
+ doc, opt_options) {
+ var features = this.readFeaturesFromDocument(doc, opt_options);
+ if (features.length > 0) {
+ return features[0];
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.XMLFeature.prototype.readFeatureFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.readFeatures = function(source, opt_options) {
+ if (ol.xml.isDocument(source)) {
+ return this.readFeaturesFromDocument(
+ /** @type {Document} */ (source), opt_options);
+ } else if (ol.xml.isNode(source)) {
+ return this.readFeaturesFromNode(/** @type {Node} */ (source), opt_options);
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readFeaturesFromDocument(doc, opt_options);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return [];
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.XMLFeature.prototype.readFeaturesFromDocument = function(
+ doc, opt_options) {
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ var n;
+ for (n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ ol.array.extend(features, this.readFeaturesFromNode(n, opt_options));
+ }
+ }
+ return features;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.XMLFeature.prototype.readFeaturesFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.readGeometry = function(source, opt_options) {
+ if (ol.xml.isDocument(source)) {
+ return this.readGeometryFromDocument(
+ /** @type {Document} */ (source), opt_options);
+ } else if (ol.xml.isNode(source)) {
+ return this.readGeometryFromNode(/** @type {Node} */ (source), opt_options);
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readGeometryFromDocument(doc, opt_options);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return null;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @protected
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.XMLFeature.prototype.readGeometryFromDocument = goog.abstractMethod;
+
+
+/**
+ * @param {Node} node Node.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @protected
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.XMLFeature.prototype.readGeometryFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.readProjection = function(source) {
+ if (ol.xml.isDocument(source)) {
+ return this.readProjectionFromDocument(/** @type {Document} */ (source));
+ } else if (ol.xml.isNode(source)) {
+ return this.readProjectionFromNode(/** @type {Node} */ (source));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readProjectionFromDocument(doc);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return null;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @protected
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.XMLFeature.prototype.readProjectionFromDocument = function(doc) {
+ return this.defaultDataProjection;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @protected
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.XMLFeature.prototype.readProjectionFromNode = function(node) {
+ return this.defaultDataProjection;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.writeFeature = function(feature, opt_options) {
+ var node = this.writeFeatureNode(feature, opt_options);
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return this.xmlSerializer_.serializeToString(node);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @protected
+ * @return {Node} Node.
+ */
+ol.format.XMLFeature.prototype.writeFeatureNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.writeFeatures = function(features, opt_options) {
+ var node = this.writeFeaturesNode(features, opt_options);
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return this.xmlSerializer_.serializeToString(node);
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ */
+ol.format.XMLFeature.prototype.writeFeaturesNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XMLFeature.prototype.writeGeometry = function(geometry, opt_options) {
+ var node = this.writeGeometryNode(geometry, opt_options);
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return this.xmlSerializer_.serializeToString(node);
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ */
+ol.format.XMLFeature.prototype.writeGeometryNode = goog.abstractMethod;
+
+// FIXME Envelopes should not be treated as geometries! readEnvelope_ is part
+// of GEOMETRY_PARSERS_ and methods using GEOMETRY_PARSERS_ do not expect
+// envelopes/extents, only geometries!
+goog.provide('ol.format.GMLBase');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Feature base format for reading and writing data in the GML format.
+ * This class cannot be instantiated, it contains only base content that
+ * is shared with versioned format classes ol.format.GML2 and
+ * ol.format.GML3.
+ *
+ * @constructor
+ * @param {olx.format.GMLOptions=} opt_options
+ * Optional configuration object.
+ * @extends {ol.format.XMLFeature}
+ */
+ol.format.GMLBase = function(opt_options) {
+ var options = /** @type {olx.format.GMLOptions} */
+ (opt_options ? opt_options : {});
+
+ /**
+ * @protected
+ * @type {Array.<string>|string|undefined}
+ */
+ this.featureType = options.featureType;
+
+ /**
+ * @protected
+ * @type {Object.<string, string>|string|undefined}
+ */
+ this.featureNS = options.featureNS;
+
+ /**
+ * @protected
+ * @type {string}
+ */
+ this.srsName = options.srsName;
+
+ /**
+ * @protected
+ * @type {string}
+ */
+ this.schemaLocation = '';
+
+ /**
+ * @type {Object.<string, Object.<string, Object>>}
+ */
+ this.FEATURE_COLLECTION_PARSERS = {};
+ this.FEATURE_COLLECTION_PARSERS[ol.format.GMLBase.GMLNS] = {
+ 'featureMember': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readFeaturesInternal),
+ 'featureMembers': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readFeaturesInternal)
+ };
+
+ ol.format.XMLFeature.call(this);
+};
+ol.inherits(ol.format.GMLBase, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.GMLBase.GMLNS = 'http://www.opengis.net/gml';
+
+
+/**
+ * A regular expression that matches if a string only contains whitespace
+ * characters. It will e.g. match `''`, `' '`, `'\n'` etc. The non-breaking
+ * space (0xa0) is explicitly included as IE doesn't include it in its
+ * definition of `\s`.
+ *
+ * Information from `goog.string.isEmptyOrWhitespace`: https://github.com/google/closure-library/blob/e877b1e/closure/goog/string/string.js#L156-L160
+ *
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.format.GMLBase.ONLY_WHITESPACE_RE_ = /^[\s\xa0]*$/;
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Array.<ol.Feature> | undefined} Features.
+ */
+ol.format.GMLBase.prototype.readFeaturesInternal = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var localName = node.localName;
+ var features = null;
+ if (localName == 'FeatureCollection') {
+ if (node.namespaceURI === 'http://www.opengis.net/wfs') {
+ features = ol.xml.pushParseAndPop([],
+ this.FEATURE_COLLECTION_PARSERS, node,
+ objectStack, this);
+ } else {
+ features = ol.xml.pushParseAndPop(null,
+ this.FEATURE_COLLECTION_PARSERS, node,
+ objectStack, this);
+ }
+ } else if (localName == 'featureMembers' || localName == 'featureMember') {
+ var context = objectStack[0];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var featureType = context['featureType'];
+ var featureNS = context['featureNS'];
+ var i, ii, prefix = 'p', defaultPrefix = 'p0';
+ if (!featureType && node.childNodes) {
+ featureType = [], featureNS = {};
+ for (i = 0, ii = node.childNodes.length; i < ii; ++i) {
+ var child = node.childNodes[i];
+ if (child.nodeType === 1) {
+ var ft = child.nodeName.split(':').pop();
+ if (featureType.indexOf(ft) === -1) {
+ var key = '';
+ var count = 0;
+ var uri = child.namespaceURI;
+ for (var candidate in featureNS) {
+ if (featureNS[candidate] === uri) {
+ key = candidate;
+ break;
+ }
+ ++count;
+ }
+ if (!key) {
+ key = prefix + count;
+ featureNS[key] = uri;
+ }
+ featureType.push(key + ':' + ft);
+ }
+ }
+ }
+ if (localName != 'featureMember') {
+ // recheck featureType for each featureMember
+ context['featureType'] = featureType;
+ context['featureNS'] = featureNS;
+ }
+ }
+ if (typeof featureNS === 'string') {
+ var ns = featureNS;
+ featureNS = {};
+ featureNS[defaultPrefix] = ns;
+ }
+ var parsersNS = {};
+ var featureTypes = Array.isArray(featureType) ? featureType : [featureType];
+ for (var p in featureNS) {
+ var parsers = {};
+ for (i = 0, ii = featureTypes.length; i < ii; ++i) {
+ var featurePrefix = featureTypes[i].indexOf(':') === -1 ?
+ defaultPrefix : featureTypes[i].split(':')[0];
+ if (featurePrefix === p) {
+ parsers[featureTypes[i].split(':').pop()] =
+ (localName == 'featureMembers') ?
+ ol.xml.makeArrayPusher(this.readFeatureElement, this) :
+ ol.xml.makeReplacer(this.readFeatureElement, this);
+ }
+ }
+ parsersNS[featureNS[p]] = parsers;
+ }
+ if (localName == 'featureMember') {
+ features = ol.xml.pushParseAndPop(undefined, parsersNS, node, objectStack);
+ } else {
+ features = ol.xml.pushParseAndPop([], parsersNS, node, objectStack);
+ }
+ }
+ if (features === null) {
+ features = [];
+ }
+ return features;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.Geometry|undefined} Geometry.
+ */
+ol.format.GMLBase.prototype.readGeometryElement = function(node, objectStack) {
+ var context = objectStack[0];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ context['srsName'] = node.firstElementChild.getAttribute('srsName');
+ /** @type {ol.geom.Geometry} */
+ var geometry = ol.xml.pushParseAndPop(null,
+ this.GEOMETRY_PARSERS_, node, objectStack, this);
+ if (geometry) {
+ return /** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, false, context));
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.GMLBase.prototype.readFeatureElement = function(node, objectStack) {
+ var n;
+ var fid = node.getAttribute('fid') ||
+ ol.xml.getAttributeNS(node, ol.format.GMLBase.GMLNS, 'id');
+ var values = {}, geometryName;
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ var localName = n.localName;
+ // Assume attribute elements have one child node and that the child
+ // is a text or CDATA node (to be treated as text).
+ // Otherwise assume it is a geometry node.
+ if (n.childNodes.length === 0 ||
+ (n.childNodes.length === 1 &&
+ (n.firstChild.nodeType === 3 || n.firstChild.nodeType === 4))) {
+ var value = ol.xml.getAllTextContent(n, false);
+ if (ol.format.GMLBase.ONLY_WHITESPACE_RE_.test(value)) {
+ value = undefined;
+ }
+ values[localName] = value;
+ } else {
+ // boundedBy is an extent and must not be considered as a geometry
+ if (localName !== 'boundedBy') {
+ geometryName = localName;
+ }
+ values[localName] = this.readGeometryElement(n, objectStack);
+ }
+ }
+ var feature = new ol.Feature(values);
+ if (geometryName) {
+ feature.setGeometryName(geometryName);
+ }
+ if (fid) {
+ feature.setId(fid);
+ }
+ return feature;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.Point|undefined} Point.
+ */
+ol.format.GMLBase.prototype.readPoint = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Point', 'localName should be Point');
+ var flatCoordinates =
+ this.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var point = new ol.geom.Point(null);
+ goog.asserts.assert(flatCoordinates.length == 3,
+ 'flatCoordinates should have a length of 3');
+ point.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ return point;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.MultiPoint|undefined} MultiPoint.
+ */
+ol.format.GMLBase.prototype.readMultiPoint = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiPoint',
+ 'localName should be MultiPoint');
+ /** @type {Array.<Array.<number>>} */
+ var coordinates = ol.xml.pushParseAndPop([],
+ this.MULTIPOINT_PARSERS_, node, objectStack, this);
+ if (coordinates) {
+ return new ol.geom.MultiPoint(coordinates);
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.MultiLineString|undefined} MultiLineString.
+ */
+ol.format.GMLBase.prototype.readMultiLineString = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiLineString',
+ 'localName should be MultiLineString');
+ /** @type {Array.<ol.geom.LineString>} */
+ var lineStrings = ol.xml.pushParseAndPop([],
+ this.MULTILINESTRING_PARSERS_, node, objectStack, this);
+ if (lineStrings) {
+ var multiLineString = new ol.geom.MultiLineString(null);
+ multiLineString.setLineStrings(lineStrings);
+ return multiLineString;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.MultiPolygon|undefined} MultiPolygon.
+ */
+ol.format.GMLBase.prototype.readMultiPolygon = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiPolygon',
+ 'localName should be MultiPolygon');
+ /** @type {Array.<ol.geom.Polygon>} */
+ var polygons = ol.xml.pushParseAndPop([],
+ this.MULTIPOLYGON_PARSERS_, node, objectStack, this);
+ if (polygons) {
+ var multiPolygon = new ol.geom.MultiPolygon(null);
+ multiPolygon.setPolygons(polygons);
+ return multiPolygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GMLBase.prototype.pointMemberParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'pointMember' ||
+ node.localName == 'pointMembers',
+ 'localName should be pointMember or pointMembers');
+ ol.xml.parseNode(this.POINTMEMBER_PARSERS_,
+ node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GMLBase.prototype.lineStringMemberParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'lineStringMember' ||
+ node.localName == 'lineStringMembers',
+ 'localName should be LineStringMember or LineStringMembers');
+ ol.xml.parseNode(this.LINESTRINGMEMBER_PARSERS_,
+ node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GMLBase.prototype.polygonMemberParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'polygonMember' ||
+ node.localName == 'polygonMembers',
+ 'localName should be polygonMember or polygonMembers');
+ ol.xml.parseNode(this.POLYGONMEMBER_PARSERS_, node,
+ objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.LineString|undefined} LineString.
+ */
+ol.format.GMLBase.prototype.readLineString = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LineString',
+ 'localName should be LineString');
+ var flatCoordinates =
+ this.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ return lineString;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} LinearRing flat coordinates.
+ */
+ol.format.GMLBase.prototype.readFlatLinearRing_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LinearRing',
+ 'localName should be LinearRing');
+ var ring = ol.xml.pushParseAndPop(null,
+ this.GEOMETRY_FLAT_COORDINATES_PARSERS_, node,
+ objectStack, this);
+ if (ring) {
+ return ring;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.LinearRing|undefined} LinearRing.
+ */
+ol.format.GMLBase.prototype.readLinearRing = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LinearRing',
+ 'localName should be LinearRing');
+ var flatCoordinates =
+ this.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var ring = new ol.geom.LinearRing(null);
+ ring.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ return ring;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.geom.Polygon|undefined} Polygon.
+ */
+ol.format.GMLBase.prototype.readPolygon = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Polygon',
+ 'localName should be Polygon');
+ /** @type {Array.<Array.<number>>} */
+ var flatLinearRings = ol.xml.pushParseAndPop([null],
+ this.FLAT_LINEAR_RINGS_PARSERS_, node, objectStack, this);
+ if (flatLinearRings && flatLinearRings[0]) {
+ var polygon = new ol.geom.Polygon(null);
+ var flatCoordinates = flatLinearRings[0];
+ var ends = [flatCoordinates.length];
+ var i, ii;
+ for (i = 1, ii = flatLinearRings.length; i < ii; ++i) {
+ ol.array.extend(flatCoordinates, flatLinearRings[i]);
+ ends.push(flatCoordinates.length);
+ }
+ polygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XYZ, flatCoordinates, ends);
+ return polygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.format.GMLBase.prototype.readFlatCoordinatesFromNode_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return ol.xml.pushParseAndPop(null,
+ this.GEOMETRY_FLAT_COORDINATES_PARSERS_, node,
+ objectStack, this);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.MULTIPOINT_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'pointMember': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.pointMemberParser_),
+ 'pointMembers': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.pointMemberParser_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.MULTILINESTRING_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'lineStringMember': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.lineStringMemberParser_),
+ 'lineStringMembers': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.lineStringMemberParser_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.MULTIPOLYGON_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'polygonMember': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.polygonMemberParser_),
+ 'polygonMembers': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.polygonMemberParser_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.POINTMEMBER_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'Point': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.readFlatCoordinatesFromNode_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.LINESTRINGMEMBER_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'LineString': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.readLineString)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GMLBase.prototype.POLYGONMEMBER_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'Polygon': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.readPolygon)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @protected
+ */
+ol.format.GMLBase.prototype.RING_PARSERS = {
+ 'http://www.opengis.net/gml' : {
+ 'LinearRing': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readFlatLinearRing_)
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GMLBase.prototype.readGeometryFromNode = function(node, opt_options) {
+ var geometry = this.readGeometryElement(node,
+ [this.getReadOptions(node, opt_options ? opt_options : {})]);
+ return geometry ? geometry : null;
+};
+
+
+/**
+ * Read all features from a GML FeatureCollection.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.GMLBase.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GMLBase.prototype.readFeaturesFromNode = function(node, opt_options) {
+ var options = {
+ featureType: this.featureType,
+ featureNS: this.featureNS
+ };
+ if (opt_options) {
+ ol.object.assign(options, this.getReadOptions(node, opt_options));
+ }
+ var features = this.readFeaturesInternal(node, [options]);
+ return features || [];
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GMLBase.prototype.readProjectionFromNode = function(node) {
+ return ol.proj.get(this.srsName ? this.srsName :
+ node.firstElementChild.getAttribute('srsName'));
+};
+
+goog.provide('ol.format.XSD');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.xml');
+goog.require('ol.string');
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.XSD.NAMESPACE_URI = 'http://www.w3.org/2001/XMLSchema';
+
+
+/**
+ * @param {Node} node Node.
+ * @return {boolean|undefined} Boolean.
+ */
+ol.format.XSD.readBoolean = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ return ol.format.XSD.readBooleanString(s);
+};
+
+
+/**
+ * @param {string} string String.
+ * @return {boolean|undefined} Boolean.
+ */
+ol.format.XSD.readBooleanString = function(string) {
+ var m = /^\s*(true|1)|(false|0)\s*$/.exec(string);
+ if (m) {
+ return m[1] !== undefined || false;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {number|undefined} DateTime in seconds.
+ */
+ol.format.XSD.readDateTime = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ var re =
+ /^\s*(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(Z|(?:([+\-])(\d{2})(?::(\d{2}))?))\s*$/;
+ var m = re.exec(s);
+ if (m) {
+ var year = parseInt(m[1], 10);
+ var month = parseInt(m[2], 10) - 1;
+ var day = parseInt(m[3], 10);
+ var hour = parseInt(m[4], 10);
+ var minute = parseInt(m[5], 10);
+ var second = parseInt(m[6], 10);
+ var dateTime = Date.UTC(year, month, day, hour, minute, second) / 1000;
+ if (m[7] != 'Z') {
+ var sign = m[8] == '-' ? -1 : 1;
+ dateTime += sign * 60 * parseInt(m[9], 10);
+ if (m[10] !== undefined) {
+ dateTime += sign * 60 * 60 * parseInt(m[10], 10);
+ }
+ }
+ return dateTime;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {number|undefined} Decimal.
+ */
+ol.format.XSD.readDecimal = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ return ol.format.XSD.readDecimalString(s);
+};
+
+
+/**
+ * @param {string} string String.
+ * @return {number|undefined} Decimal.
+ */
+ol.format.XSD.readDecimalString = function(string) {
+ // FIXME check spec
+ var m = /^\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?)\s*$/i.exec(string);
+ if (m) {
+ return parseFloat(m[1]);
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {number|undefined} Non negative integer.
+ */
+ol.format.XSD.readNonNegativeInteger = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ return ol.format.XSD.readNonNegativeIntegerString(s);
+};
+
+
+/**
+ * @param {string} string String.
+ * @return {number|undefined} Non negative integer.
+ */
+ol.format.XSD.readNonNegativeIntegerString = function(string) {
+ var m = /^\s*(\d+)\s*$/.exec(string);
+ if (m) {
+ return parseInt(m[1], 10);
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {string|undefined} String.
+ */
+ol.format.XSD.readString = function(node) {
+ return ol.xml.getAllTextContent(node, false).trim();
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the boolean to.
+ * @param {boolean} bool Boolean.
+ */
+ol.format.XSD.writeBooleanTextNode = function(node, bool) {
+ ol.format.XSD.writeStringTextNode(node, (bool) ? '1' : '0');
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the dateTime to.
+ * @param {number} dateTime DateTime in seconds.
+ */
+ol.format.XSD.writeDateTimeTextNode = function(node, dateTime) {
+ var date = new Date(dateTime * 1000);
+ var string = date.getUTCFullYear() + '-' +
+ ol.string.padNumber(date.getUTCMonth() + 1, 2) + '-' +
+ ol.string.padNumber(date.getUTCDate(), 2) + 'T' +
+ ol.string.padNumber(date.getUTCHours(), 2) + ':' +
+ ol.string.padNumber(date.getUTCMinutes(), 2) + ':' +
+ ol.string.padNumber(date.getUTCSeconds(), 2) + 'Z';
+ node.appendChild(ol.xml.DOCUMENT.createTextNode(string));
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the decimal to.
+ * @param {number} decimal Decimal.
+ */
+ol.format.XSD.writeDecimalTextNode = function(node, decimal) {
+ var string = decimal.toPrecision();
+ node.appendChild(ol.xml.DOCUMENT.createTextNode(string));
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the decimal to.
+ * @param {number} nonNegativeInteger Non negative integer.
+ */
+ol.format.XSD.writeNonNegativeIntegerTextNode = function(node, nonNegativeInteger) {
+ goog.asserts.assert(nonNegativeInteger >= 0, 'value should be more than 0');
+ goog.asserts.assert(nonNegativeInteger == (nonNegativeInteger | 0),
+ 'value should be an integer value');
+ var string = nonNegativeInteger.toString();
+ node.appendChild(ol.xml.DOCUMENT.createTextNode(string));
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the string to.
+ * @param {string} string String.
+ */
+ol.format.XSD.writeStringTextNode = function(node, string) {
+ node.appendChild(ol.xml.DOCUMENT.createTextNode(string));
+};
+
+goog.provide('ol.format.GML2');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.format.GMLBase');
+goog.require('ol.format.XSD');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the GML format,
+ * version 2.1.2.
+ *
+ * @constructor
+ * @param {olx.format.GMLOptions=} opt_options Optional configuration object.
+ * @extends {ol.format.GMLBase}
+ * @api
+ */
+ol.format.GML2 = function(opt_options) {
+ var options = /** @type {olx.format.GMLOptions} */
+ (opt_options ? opt_options : {});
+
+ ol.format.GMLBase.call(this, options);
+
+ this.FEATURE_COLLECTION_PARSERS[ol.format.GMLBase.GMLNS][
+ 'featureMember'] =
+ ol.xml.makeArrayPusher(ol.format.GMLBase.prototype.readFeaturesInternal);
+
+ /**
+ * @inheritDoc
+ */
+ this.schemaLocation = options.schemaLocation ?
+ options.schemaLocation : ol.format.GML2.schemaLocation_;
+
+};
+ol.inherits(ol.format.GML2, ol.format.GMLBase);
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.GML2.schemaLocation_ = ol.format.GMLBase.GMLNS +
+ ' http://schemas.opengis.net/gml/2.1.2/feature.xsd';
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} Flat coordinates.
+ */
+ol.format.GML2.prototype.readFlatCoordinates_ = function(node, objectStack) {
+ var s = ol.xml.getAllTextContent(node, false).replace(/^\s*|\s*$/g, '');
+ var context = /** @type {ol.XmlNodeStackItem} */ (objectStack[0]);
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var containerSrs = context['srsName'];
+ var containerDimension = node.parentNode.getAttribute('srsDimension');
+ var axisOrientation = 'enu';
+ if (containerSrs) {
+ var proj = ol.proj.get(containerSrs);
+ if (proj) {
+ axisOrientation = proj.getAxisOrientation();
+ }
+ }
+ var coords = s.split(/[\s,]+/);
+ // The "dimension" attribute is from the GML 3.0.1 spec.
+ var dim = 2;
+ if (node.getAttribute('srsDimension')) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('srsDimension'));
+ } else if (node.getAttribute('dimension')) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('dimension'));
+ } else if (containerDimension) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(containerDimension);
+ }
+ var x, y, z;
+ var flatCoordinates = [];
+ for (var i = 0, ii = coords.length; i < ii; i += dim) {
+ x = parseFloat(coords[i]);
+ y = parseFloat(coords[i + 1]);
+ z = (dim === 3) ? parseFloat(coords[i + 2]) : 0;
+ if (axisOrientation.substr(0, 2) === 'en') {
+ flatCoordinates.push(x, y, z);
+ } else {
+ flatCoordinates.push(y, x, z);
+ }
+ }
+ return flatCoordinates;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Extent|undefined} Envelope.
+ */
+ol.format.GML2.prototype.readBox_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Box', 'localName should be Box');
+ /** @type {Array.<number>} */
+ var flatCoordinates = ol.xml.pushParseAndPop([null],
+ this.BOX_PARSERS_, node, objectStack, this);
+ return ol.extent.createOrUpdate(flatCoordinates[1][0],
+ flatCoordinates[1][1], flatCoordinates[1][3],
+ flatCoordinates[1][4]);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML2.prototype.innerBoundaryIsParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'innerBoundaryIs',
+ 'localName should be innerBoundaryIs');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ this.RING_PARSERS, node, objectStack, this);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings should have an array length larger than 0');
+ flatLinearRings.push(flatLinearRing);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML2.prototype.outerBoundaryIsParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'outerBoundaryIs',
+ 'localName should be outerBoundaryIs');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ this.RING_PARSERS, node, objectStack, this);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings should have an array length larger than 0');
+ flatLinearRings[0] = flatLinearRing;
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML2.prototype.GEOMETRY_FLAT_COORDINATES_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'coordinates': ol.xml.makeReplacer(
+ ol.format.GML2.prototype.readFlatCoordinates_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML2.prototype.FLAT_LINEAR_RINGS_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'innerBoundaryIs': ol.format.GML2.prototype.innerBoundaryIsParser_,
+ 'outerBoundaryIs': ol.format.GML2.prototype.outerBoundaryIsParser_
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML2.prototype.BOX_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'coordinates': ol.xml.makeArrayPusher(
+ ol.format.GML2.prototype.readFlatCoordinates_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML2.prototype.GEOMETRY_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'Point': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPoint),
+ 'MultiPoint': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiPoint),
+ 'LineString': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readLineString),
+ 'MultiLineString': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiLineString),
+ 'LinearRing' : ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readLinearRing),
+ 'Polygon': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPolygon),
+ 'MultiPolygon': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiPolygon),
+ 'Box': ol.xml.makeReplacer(ol.format.GML2.prototype.readBox_)
+ }
+};
+
+goog.provide('ol.format.GML');
+goog.provide('ol.format.GML3');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.array');
+goog.require('ol.Feature');
+goog.require('ol.extent');
+goog.require('ol.format.Feature');
+goog.require('ol.format.GMLBase');
+goog.require('ol.format.XSD');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the GML format
+ * version 3.1.1.
+ * Currently only supports GML 3.1.1 Simple Features profile.
+ *
+ * @constructor
+ * @param {olx.format.GMLOptions=} opt_options
+ * Optional configuration object.
+ * @extends {ol.format.GMLBase}
+ * @api
+ */
+ol.format.GML3 = function(opt_options) {
+ var options = /** @type {olx.format.GMLOptions} */
+ (opt_options ? opt_options : {});
+
+ ol.format.GMLBase.call(this, options);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.surface_ = options.surface !== undefined ? options.surface : false;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.curve_ = options.curve !== undefined ? options.curve : false;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.multiCurve_ = options.multiCurve !== undefined ?
+ options.multiCurve : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.multiSurface_ = options.multiSurface !== undefined ?
+ options.multiSurface : true;
+
+ /**
+ * @inheritDoc
+ */
+ this.schemaLocation = options.schemaLocation ?
+ options.schemaLocation : ol.format.GML3.schemaLocation_;
+
+};
+ol.inherits(ol.format.GML3, ol.format.GMLBase);
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.GML3.schemaLocation_ = ol.format.GMLBase.GMLNS +
+ ' http://schemas.opengis.net/gml/3.1.1/profiles/gmlsfProfile/' +
+ '1.0.0/gmlsf.xsd';
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.MultiLineString|undefined} MultiLineString.
+ */
+ol.format.GML3.prototype.readMultiCurve_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiCurve',
+ 'localName should be MultiCurve');
+ /** @type {Array.<ol.geom.LineString>} */
+ var lineStrings = ol.xml.pushParseAndPop([],
+ this.MULTICURVE_PARSERS_, node, objectStack, this);
+ if (lineStrings) {
+ var multiLineString = new ol.geom.MultiLineString(null);
+ multiLineString.setLineStrings(lineStrings);
+ return multiLineString;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.MultiPolygon|undefined} MultiPolygon.
+ */
+ol.format.GML3.prototype.readMultiSurface_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiSurface',
+ 'localName should be MultiSurface');
+ /** @type {Array.<ol.geom.Polygon>} */
+ var polygons = ol.xml.pushParseAndPop([],
+ this.MULTISURFACE_PARSERS_, node, objectStack, this);
+ if (polygons) {
+ var multiPolygon = new ol.geom.MultiPolygon(null);
+ multiPolygon.setPolygons(polygons);
+ return multiPolygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML3.prototype.curveMemberParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'curveMember' ||
+ node.localName == 'curveMembers',
+ 'localName should be curveMember or curveMembers');
+ ol.xml.parseNode(this.CURVEMEMBER_PARSERS_, node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML3.prototype.surfaceMemberParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'surfaceMember' ||
+ node.localName == 'surfaceMembers',
+ 'localName should be surfaceMember or surfaceMembers');
+ ol.xml.parseNode(this.SURFACEMEMBER_PARSERS_,
+ node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<(Array.<number>)>|undefined} flat coordinates.
+ */
+ol.format.GML3.prototype.readPatch_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'patches',
+ 'localName should be patches');
+ return ol.xml.pushParseAndPop([null],
+ this.PATCHES_PARSERS_, node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} flat coordinates.
+ */
+ol.format.GML3.prototype.readSegment_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'segments',
+ 'localName should be segments');
+ return ol.xml.pushParseAndPop([null],
+ this.SEGMENTS_PARSERS_, node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<(Array.<number>)>|undefined} flat coordinates.
+ */
+ol.format.GML3.prototype.readPolygonPatch_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'npde.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'PolygonPatch',
+ 'localName should be PolygonPatch');
+ return ol.xml.pushParseAndPop([null],
+ this.FLAT_LINEAR_RINGS_PARSERS_, node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} flat coordinates.
+ */
+ol.format.GML3.prototype.readLineStringSegment_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LineStringSegment',
+ 'localName should be LineStringSegment');
+ return ol.xml.pushParseAndPop([null],
+ this.GEOMETRY_FLAT_COORDINATES_PARSERS_,
+ node, objectStack, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML3.prototype.interiorParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'interior',
+ 'localName should be interior');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ this.RING_PARSERS, node, objectStack, this);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings should have an array length of 1 or more');
+ flatLinearRings.push(flatLinearRing);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GML3.prototype.exteriorParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'exterior',
+ 'localName should be exterior');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ this.RING_PARSERS, node, objectStack, this);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings should have an array length of 1 or more');
+ flatLinearRings[0] = flatLinearRing;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.Polygon|undefined} Polygon.
+ */
+ol.format.GML3.prototype.readSurface_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Surface',
+ 'localName should be Surface');
+ /** @type {Array.<Array.<number>>} */
+ var flatLinearRings = ol.xml.pushParseAndPop([null],
+ this.SURFACE_PARSERS_, node, objectStack, this);
+ if (flatLinearRings && flatLinearRings[0]) {
+ var polygon = new ol.geom.Polygon(null);
+ var flatCoordinates = flatLinearRings[0];
+ var ends = [flatCoordinates.length];
+ var i, ii;
+ for (i = 1, ii = flatLinearRings.length; i < ii; ++i) {
+ ol.array.extend(flatCoordinates, flatLinearRings[i]);
+ ends.push(flatCoordinates.length);
+ }
+ polygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XYZ, flatCoordinates, ends);
+ return polygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.LineString|undefined} LineString.
+ */
+ol.format.GML3.prototype.readCurve_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Curve', 'localName should be Curve');
+ /** @type {Array.<number>} */
+ var flatCoordinates = ol.xml.pushParseAndPop([null],
+ this.CURVE_PARSERS_, node, objectStack, this);
+ if (flatCoordinates) {
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ return lineString;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Extent|undefined} Envelope.
+ */
+ol.format.GML3.prototype.readEnvelope_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Envelope',
+ 'localName should be Envelope');
+ /** @type {Array.<number>} */
+ var flatCoordinates = ol.xml.pushParseAndPop([null],
+ this.ENVELOPE_PARSERS_, node, objectStack, this);
+ return ol.extent.createOrUpdate(flatCoordinates[1][0],
+ flatCoordinates[1][1], flatCoordinates[2][0],
+ flatCoordinates[2][1]);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} Flat coordinates.
+ */
+ol.format.GML3.prototype.readFlatPos_ = function(node, objectStack) {
+ var s = ol.xml.getAllTextContent(node, false);
+ var re = /^\s*([+\-]?\d*\.?\d+(?:[eE][+\-]?\d+)?)\s*/;
+ /** @type {Array.<number>} */
+ var flatCoordinates = [];
+ var m;
+ while ((m = re.exec(s))) {
+ flatCoordinates.push(parseFloat(m[1]));
+ s = s.substr(m[0].length);
+ }
+ if (s !== '') {
+ return undefined;
+ }
+ var context = objectStack[0];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var containerSrs = context['srsName'];
+ var axisOrientation = 'enu';
+ if (containerSrs) {
+ var proj = ol.proj.get(containerSrs);
+ axisOrientation = proj.getAxisOrientation();
+ }
+ if (axisOrientation === 'neu') {
+ var i, ii;
+ for (i = 0, ii = flatCoordinates.length; i < ii; i += 3) {
+ var y = flatCoordinates[i];
+ var x = flatCoordinates[i + 1];
+ flatCoordinates[i] = x;
+ flatCoordinates[i + 1] = y;
+ }
+ }
+ var len = flatCoordinates.length;
+ if (len == 2) {
+ flatCoordinates.push(0);
+ }
+ if (len === 0) {
+ return undefined;
+ }
+ return flatCoordinates;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>|undefined} Flat coordinates.
+ */
+ol.format.GML3.prototype.readFlatPosList_ = function(node, objectStack) {
+ var s = ol.xml.getAllTextContent(node, false).replace(/^\s*|\s*$/g, '');
+ var context = objectStack[0];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var containerSrs = context['srsName'];
+ var containerDimension = node.parentNode.getAttribute('srsDimension');
+ var axisOrientation = 'enu';
+ if (containerSrs) {
+ var proj = ol.proj.get(containerSrs);
+ axisOrientation = proj.getAxisOrientation();
+ }
+ var coords = s.split(/\s+/);
+ // The "dimension" attribute is from the GML 3.0.1 spec.
+ var dim = 2;
+ if (node.getAttribute('srsDimension')) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('srsDimension'));
+ } else if (node.getAttribute('dimension')) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('dimension'));
+ } else if (containerDimension) {
+ dim = ol.format.XSD.readNonNegativeIntegerString(containerDimension);
+ }
+ var x, y, z;
+ var flatCoordinates = [];
+ for (var i = 0, ii = coords.length; i < ii; i += dim) {
+ x = parseFloat(coords[i]);
+ y = parseFloat(coords[i + 1]);
+ z = (dim === 3) ? parseFloat(coords[i + 2]) : 0;
+ if (axisOrientation.substr(0, 2) === 'en') {
+ flatCoordinates.push(x, y, z);
+ } else {
+ flatCoordinates.push(y, x, z);
+ }
+ }
+ return flatCoordinates;
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.GEOMETRY_FLAT_COORDINATES_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'pos': ol.xml.makeReplacer(ol.format.GML3.prototype.readFlatPos_),
+ 'posList': ol.xml.makeReplacer(ol.format.GML3.prototype.readFlatPosList_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.FLAT_LINEAR_RINGS_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'interior': ol.format.GML3.prototype.interiorParser_,
+ 'exterior': ol.format.GML3.prototype.exteriorParser_
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.GEOMETRY_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'Point': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPoint),
+ 'MultiPoint': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiPoint),
+ 'LineString': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readLineString),
+ 'MultiLineString': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiLineString),
+ 'LinearRing' : ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readLinearRing),
+ 'Polygon': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPolygon),
+ 'MultiPolygon': ol.xml.makeReplacer(
+ ol.format.GMLBase.prototype.readMultiPolygon),
+ 'Surface': ol.xml.makeReplacer(ol.format.GML3.prototype.readSurface_),
+ 'MultiSurface': ol.xml.makeReplacer(
+ ol.format.GML3.prototype.readMultiSurface_),
+ 'Curve': ol.xml.makeReplacer(ol.format.GML3.prototype.readCurve_),
+ 'MultiCurve': ol.xml.makeReplacer(
+ ol.format.GML3.prototype.readMultiCurve_),
+ 'Envelope': ol.xml.makeReplacer(ol.format.GML3.prototype.readEnvelope_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.MULTICURVE_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'curveMember': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.curveMemberParser_),
+ 'curveMembers': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.curveMemberParser_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.MULTISURFACE_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'surfaceMember': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.surfaceMemberParser_),
+ 'surfaceMembers': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.surfaceMemberParser_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.CURVEMEMBER_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'LineString': ol.xml.makeArrayPusher(
+ ol.format.GMLBase.prototype.readLineString),
+ 'Curve': ol.xml.makeArrayPusher(ol.format.GML3.prototype.readCurve_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.SURFACEMEMBER_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'Polygon': ol.xml.makeArrayPusher(ol.format.GMLBase.prototype.readPolygon),
+ 'Surface': ol.xml.makeArrayPusher(ol.format.GML3.prototype.readSurface_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.SURFACE_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'patches': ol.xml.makeReplacer(ol.format.GML3.prototype.readPatch_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.CURVE_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'segments': ol.xml.makeReplacer(ol.format.GML3.prototype.readSegment_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.ENVELOPE_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'lowerCorner': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.readFlatPosList_),
+ 'upperCorner': ol.xml.makeArrayPusher(
+ ol.format.GML3.prototype.readFlatPosList_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.PATCHES_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'PolygonPatch': ol.xml.makeReplacer(
+ ol.format.GML3.prototype.readPolygonPatch_)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GML3.prototype.SEGMENTS_PARSERS_ = {
+ 'http://www.opengis.net/gml' : {
+ 'LineStringSegment': ol.xml.makeReplacer(
+ ol.format.GML3.prototype.readLineStringSegment_)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Point} value Point geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writePos_ = function(node, value, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ var axisOrientation = 'enu';
+ if (srsName) {
+ axisOrientation = ol.proj.get(srsName).getAxisOrientation();
+ }
+ var point = value.getCoordinates();
+ var coords;
+ // only 2d for simple features profile
+ if (axisOrientation.substr(0, 2) === 'en') {
+ coords = (point[0] + ' ' + point[1]);
+ } else {
+ coords = (point[1] + ' ' + point[0]);
+ }
+ ol.format.XSD.writeStringTextNode(node, coords);
+};
+
+
+/**
+ * @param {Array.<number>} point Point geometry.
+ * @param {string=} opt_srsName Optional srsName
+ * @return {string} The coords string.
+ * @private
+ */
+ol.format.GML3.prototype.getCoords_ = function(point, opt_srsName) {
+ var axisOrientation = 'enu';
+ if (opt_srsName) {
+ axisOrientation = ol.proj.get(opt_srsName).getAxisOrientation();
+ }
+ return ((axisOrientation.substr(0, 2) === 'en') ?
+ point[0] + ' ' + point[1] :
+ point[1] + ' ' + point[0]);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LineString|ol.geom.LinearRing} value Geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writePosList_ = function(node, value, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ // only 2d for simple features profile
+ var points = value.getCoordinates();
+ var len = points.length;
+ var parts = new Array(len);
+ var point;
+ for (var i = 0; i < len; ++i) {
+ point = points[i];
+ parts[i] = this.getCoords_(point, srsName);
+ }
+ ol.format.XSD.writeStringTextNode(node, parts.join(' '));
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Point} geometry Point geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writePoint_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var pos = ol.xml.createElementNS(node.namespaceURI, 'pos');
+ node.appendChild(pos);
+ this.writePos_(pos, geometry, objectStack);
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.ENVELOPE_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'lowerCorner': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'upperCorner': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Extent} extent Extent.
+ * @param {Array.<*>} objectStack Node stack.
+ */
+ol.format.GML3.prototype.writeEnvelope = function(node, extent, objectStack) {
+ goog.asserts.assert(extent.length == 4, 'extent should have 4 items');
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var keys = ['lowerCorner', 'upperCorner'];
+ var values = [extent[0] + ' ' + extent[1], extent[2] + ' ' + extent[3]];
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ ({node: node}), ol.format.GML3.ENVELOPE_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ values,
+ objectStack, keys, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LinearRing} geometry LinearRing geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeLinearRing_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var posList = ol.xml.createElementNS(node.namespaceURI, 'posList');
+ node.appendChild(posList);
+ this.writePosList_(posList, geometry, objectStack);
+};
+
+
+/**
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node} Node.
+ * @private
+ */
+ol.format.GML3.prototype.RING_NODE_FACTORY_ = function(value, objectStack, opt_nodeName) {
+ var context = objectStack[objectStack.length - 1];
+ var parentNode = context.node;
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var exteriorWritten = context['exteriorWritten'];
+ if (exteriorWritten === undefined) {
+ context['exteriorWritten'] = true;
+ }
+ return ol.xml.createElementNS(parentNode.namespaceURI,
+ exteriorWritten !== undefined ? 'interior' : 'exterior');
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Polygon} geometry Polygon geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeSurfaceOrPolygon_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (node.nodeName !== 'PolygonPatch' && srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ if (node.nodeName === 'Polygon' || node.nodeName === 'PolygonPatch') {
+ var rings = geometry.getLinearRings();
+ ol.xml.pushSerializeAndPop(
+ {node: node, srsName: srsName},
+ ol.format.GML3.RING_SERIALIZERS_,
+ this.RING_NODE_FACTORY_,
+ rings, objectStack, undefined, this);
+ } else if (node.nodeName === 'Surface') {
+ var patches = ol.xml.createElementNS(node.namespaceURI, 'patches');
+ node.appendChild(patches);
+ this.writeSurfacePatches_(
+ patches, geometry, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LineString} geometry LineString geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeCurveOrLineString_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (node.nodeName !== 'LineStringSegment' && srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ if (node.nodeName === 'LineString' ||
+ node.nodeName === 'LineStringSegment') {
+ var posList = ol.xml.createElementNS(node.namespaceURI, 'posList');
+ node.appendChild(posList);
+ this.writePosList_(posList, geometry, objectStack);
+ } else if (node.nodeName === 'Curve') {
+ var segments = ol.xml.createElementNS(node.namespaceURI, 'segments');
+ node.appendChild(segments);
+ this.writeCurveSegments_(segments,
+ geometry, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.MultiPolygon} geometry MultiPolygon geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeMultiSurfaceOrPolygon_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ var surface = context['surface'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var polygons = geometry.getPolygons();
+ ol.xml.pushSerializeAndPop({node: node, srsName: srsName, surface: surface},
+ ol.format.GML3.SURFACEORPOLYGONMEMBER_SERIALIZERS_,
+ this.MULTIGEOMETRY_MEMBER_NODE_FACTORY_, polygons,
+ objectStack, undefined, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.MultiPoint} geometry MultiPoint geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeMultiPoint_ = function(node, geometry,
+ objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var points = geometry.getPoints();
+ ol.xml.pushSerializeAndPop({node: node, srsName: srsName},
+ ol.format.GML3.POINTMEMBER_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('pointMember'), points,
+ objectStack, undefined, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.MultiLineString} geometry MultiLineString geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeMultiCurveOrLineString_ = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var srsName = context['srsName'];
+ var curve = context['curve'];
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ var lines = geometry.getLineStrings();
+ ol.xml.pushSerializeAndPop({node: node, srsName: srsName, curve: curve},
+ ol.format.GML3.LINESTRINGORCURVEMEMBER_SERIALIZERS_,
+ this.MULTIGEOMETRY_MEMBER_NODE_FACTORY_, lines,
+ objectStack, undefined, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LinearRing} ring LinearRing geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeRing_ = function(node, ring, objectStack) {
+ var linearRing = ol.xml.createElementNS(node.namespaceURI, 'LinearRing');
+ node.appendChild(linearRing);
+ this.writeLinearRing_(linearRing, ring, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Polygon} polygon Polygon geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeSurfaceOrPolygonMember_ = function(node, polygon, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var child = this.GEOMETRY_NODE_FACTORY_(
+ polygon, objectStack);
+ if (child) {
+ node.appendChild(child);
+ this.writeSurfaceOrPolygon_(child, polygon, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Point} point Point geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writePointMember_ = function(node, point, objectStack) {
+ var child = ol.xml.createElementNS(node.namespaceURI, 'Point');
+ node.appendChild(child);
+ this.writePoint_(child, point, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LineString} line LineString geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeLineStringOrCurveMember_ = function(node, line, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var child = this.GEOMETRY_NODE_FACTORY_(line, objectStack);
+ if (child) {
+ node.appendChild(child);
+ this.writeCurveOrLineString_(child, line, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Polygon} polygon Polygon geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeSurfacePatches_ = function(node, polygon, objectStack) {
+ var child = ol.xml.createElementNS(node.namespaceURI, 'PolygonPatch');
+ node.appendChild(child);
+ this.writeSurfaceOrPolygon_(child, polygon, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LineString} line LineString geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeCurveSegments_ = function(node, line, objectStack) {
+ var child = ol.xml.createElementNS(node.namespaceURI,
+ 'LineStringSegment');
+ node.appendChild(child);
+ this.writeCurveOrLineString_(child, line, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Geometry|ol.Extent} geometry Geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ */
+ol.format.GML3.prototype.writeGeometryElement = function(node, geometry, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var item = ol.object.assign({}, context);
+ item.node = node;
+ var value;
+ if (Array.isArray(geometry)) {
+ if (context.dataProjection) {
+ value = ol.proj.transformExtent(
+ geometry, context.featureProjection, context.dataProjection);
+ } else {
+ value = geometry;
+ }
+ } else {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Geometry,
+ 'geometry should be an ol.geom.Geometry');
+ value =
+ ol.format.Feature.transformWithOptions(geometry, true, context);
+ }
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ (item), ol.format.GML3.GEOMETRY_SERIALIZERS_,
+ this.GEOMETRY_NODE_FACTORY_, [value],
+ objectStack, undefined, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Node stack.
+ */
+ol.format.GML3.prototype.writeFeatureElement = function(node, feature, objectStack) {
+ var fid = feature.getId();
+ if (fid) {
+ node.setAttribute('fid', fid);
+ }
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var featureNS = context['featureNS'];
+ var geometryName = feature.getGeometryName();
+ if (!context.serializers) {
+ context.serializers = {};
+ context.serializers[featureNS] = {};
+ }
+ var properties = feature.getProperties();
+ var keys = [], values = [];
+ for (var key in properties) {
+ var value = properties[key];
+ if (value !== null) {
+ keys.push(key);
+ values.push(value);
+ if (key == geometryName || value instanceof ol.geom.Geometry) {
+ if (!(key in context.serializers[featureNS])) {
+ context.serializers[featureNS][key] = ol.xml.makeChildAppender(
+ this.writeGeometryElement, this);
+ }
+ } else {
+ if (!(key in context.serializers[featureNS])) {
+ context.serializers[featureNS][key] = ol.xml.makeChildAppender(
+ ol.format.XSD.writeStringTextNode);
+ }
+ }
+ }
+ }
+ var item = ol.object.assign({}, context);
+ item.node = node;
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ (item), context.serializers,
+ ol.xml.makeSimpleNodeFactory(undefined, featureNS),
+ values,
+ objectStack, keys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML3.prototype.writeFeatureMembers_ = function(node, features, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var featureType = context['featureType'];
+ var featureNS = context['featureNS'];
+ var serializers = {};
+ serializers[featureNS] = {};
+ serializers[featureNS][featureType] = ol.xml.makeChildAppender(
+ this.writeFeatureElement, this);
+ var item = ol.object.assign({}, context);
+ item.node = node;
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ (item),
+ serializers,
+ ol.xml.makeSimpleNodeFactory(featureType, featureNS), features,
+ objectStack);
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.SURFACEORPOLYGONMEMBER_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'surfaceMember': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeSurfaceOrPolygonMember_),
+ 'polygonMember': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeSurfaceOrPolygonMember_)
+ }
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.POINTMEMBER_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'pointMember': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writePointMember_)
+ }
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.LINESTRINGORCURVEMEMBER_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'lineStringMember': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeLineStringOrCurveMember_),
+ 'curveMember': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeLineStringOrCurveMember_)
+ }
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.RING_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'exterior': ol.xml.makeChildAppender(ol.format.GML3.prototype.writeRing_),
+ 'interior': ol.xml.makeChildAppender(ol.format.GML3.prototype.writeRing_)
+ }
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML3.GEOMETRY_SERIALIZERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'Curve': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeCurveOrLineString_),
+ 'MultiCurve': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeMultiCurveOrLineString_),
+ 'Point': ol.xml.makeChildAppender(ol.format.GML3.prototype.writePoint_),
+ 'MultiPoint': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeMultiPoint_),
+ 'LineString': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeCurveOrLineString_),
+ 'MultiLineString': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeMultiCurveOrLineString_),
+ 'LinearRing': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeLinearRing_),
+ 'Polygon': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeSurfaceOrPolygon_),
+ 'MultiPolygon': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeMultiSurfaceOrPolygon_),
+ 'Surface': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeSurfaceOrPolygon_),
+ 'MultiSurface': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeMultiSurfaceOrPolygon_),
+ 'Envelope': ol.xml.makeChildAppender(
+ ol.format.GML3.prototype.writeEnvelope)
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, string>}
+ * @private
+ */
+ol.format.GML3.MULTIGEOMETRY_TO_MEMBER_NODENAME_ = {
+ 'MultiLineString': 'lineStringMember',
+ 'MultiCurve': 'curveMember',
+ 'MultiPolygon': 'polygonMember',
+ 'MultiSurface': 'surfaceMember'
+};
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.GML3.prototype.MULTIGEOMETRY_MEMBER_NODE_FACTORY_ = function(value, objectStack, opt_nodeName) {
+ var parentNode = objectStack[objectStack.length - 1].node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be a node');
+ return ol.xml.createElementNS('http://www.opengis.net/gml',
+ ol.format.GML3.MULTIGEOMETRY_TO_MEMBER_NODENAME_[parentNode.nodeName]);
+};
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.GML3.prototype.GEOMETRY_NODE_FACTORY_ = function(value, objectStack, opt_nodeName) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var multiSurface = context['multiSurface'];
+ var surface = context['surface'];
+ var curve = context['curve'];
+ var multiCurve = context['multiCurve'];
+ var parentNode = objectStack[objectStack.length - 1].node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be a node');
+ var nodeName;
+ if (!Array.isArray(value)) {
+ goog.asserts.assertInstanceof(value, ol.geom.Geometry,
+ 'value should be an ol.geom.Geometry');
+ nodeName = value.getType();
+ if (nodeName === 'MultiPolygon' && multiSurface === true) {
+ nodeName = 'MultiSurface';
+ } else if (nodeName === 'Polygon' && surface === true) {
+ nodeName = 'Surface';
+ } else if (nodeName === 'LineString' && curve === true) {
+ nodeName = 'Curve';
+ } else if (nodeName === 'MultiLineString' && multiCurve === true) {
+ nodeName = 'MultiCurve';
+ }
+ } else {
+ nodeName = 'Envelope';
+ }
+ return ol.xml.createElementNS('http://www.opengis.net/gml',
+ nodeName);
+};
+
+
+/**
+ * Encode a geometry in GML 3.1.1 Simple Features.
+ *
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ * @api
+ */
+ol.format.GML3.prototype.writeGeometryNode = function(geometry, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var geom = ol.xml.createElementNS('http://www.opengis.net/gml', 'geom');
+ var context = {node: geom, srsName: this.srsName,
+ curve: this.curve_, surface: this.surface_,
+ multiSurface: this.multiSurface_, multiCurve: this.multiCurve_};
+ if (opt_options) {
+ ol.object.assign(context, opt_options);
+ }
+ this.writeGeometryElement(geom, geometry, [context]);
+ return geom;
+};
+
+
+/**
+ * Encode an array of features in GML 3.1.1 Simple Features.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {string} Result.
+ * @api stable
+ */
+ol.format.GML3.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features in the GML 3.1.1 format as an XML node.
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ * @api
+ */
+ol.format.GML3.prototype.writeFeaturesNode = function(features, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var node = ol.xml.createElementNS('http://www.opengis.net/gml',
+ 'featureMembers');
+ ol.xml.setAttributeNS(node, 'http://www.w3.org/2001/XMLSchema-instance',
+ 'xsi:schemaLocation', this.schemaLocation);
+ var context = {
+ srsName: this.srsName,
+ curve: this.curve_,
+ surface: this.surface_,
+ multiSurface: this.multiSurface_,
+ multiCurve: this.multiCurve_,
+ featureNS: this.featureNS,
+ featureType: this.featureType
+ };
+ if (opt_options) {
+ ol.object.assign(context, opt_options);
+ }
+ this.writeFeatureMembers_(node, features, [context]);
+ return node;
+};
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the GML format
+ * version 3.1.1.
+ * Currently only supports GML 3.1.1 Simple Features profile.
+ *
+ * @constructor
+ * @param {olx.format.GMLOptions=} opt_options
+ * Optional configuration object.
+ * @extends {ol.format.GMLBase}
+ * @api stable
+ */
+ol.format.GML = ol.format.GML3;
+
+
+/**
+ * Encode an array of features in GML 3.1.1 Simple Features.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {string} Result.
+ * @api stable
+ */
+ol.format.GML.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features in the GML 3.1.1 format as an XML node.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ * @api
+ */
+ol.format.GML.prototype.writeFeaturesNode;
+
+goog.provide('ol.format.GPX');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.array');
+goog.require('ol.format.Feature');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.format.XSD');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.Point');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the GPX format.
+ *
+ * @constructor
+ * @extends {ol.format.XMLFeature}
+ * @param {olx.format.GPXOptions=} opt_options Options.
+ * @api stable
+ */
+ol.format.GPX = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.XMLFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get('EPSG:4326');
+
+ /**
+ * @type {function(ol.Feature, Node)|undefined}
+ * @private
+ */
+ this.readExtensions_ = options.readExtensions;
+};
+ol.inherits(ol.format.GPX, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.format.GPX.NAMESPACE_URIS_ = [
+ null,
+ 'http://www.topografix.com/GPX/1/0',
+ 'http://www.topografix.com/GPX/1/1'
+];
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.GPX.SCHEMA_LOCATION_ = 'http://www.topografix.com/GPX/1/1 ' +
+ 'http://www.topografix.com/GPX/1/1/gpx.xsd';
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {Node} node Node.
+ * @param {Object} values Values.
+ * @private
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.format.GPX.appendCoordinate_ = function(flatCoordinates, node, values) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ flatCoordinates.push(
+ parseFloat(node.getAttribute('lon')),
+ parseFloat(node.getAttribute('lat')));
+ if ('ele' in values) {
+ flatCoordinates.push(/** @type {number} */ (values['ele']));
+ delete values['ele'];
+ } else {
+ flatCoordinates.push(0);
+ }
+ if ('time' in values) {
+ flatCoordinates.push(/** @type {number} */ (values['time']));
+ delete values['time'];
+ } else {
+ flatCoordinates.push(0);
+ }
+ return flatCoordinates;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.parseLink_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'link', 'localName should be link');
+ var values = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ var href = node.getAttribute('href');
+ if (href !== null) {
+ values['link'] = href;
+ }
+ ol.xml.parseNode(ol.format.GPX.LINK_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.parseExtensions_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'extensions',
+ 'localName should be extensions');
+ var values = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ values['extensionsNode_'] = node;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.parseRtePt_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'rtept', 'localName should be rtept');
+ var values = ol.xml.pushParseAndPop(
+ {}, ol.format.GPX.RTEPT_PARSERS_, node, objectStack);
+ if (values) {
+ var rteValues = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ var flatCoordinates = /** @type {Array.<number>} */
+ (rteValues['flatCoordinates']);
+ ol.format.GPX.appendCoordinate_(flatCoordinates, node, values);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.parseTrkPt_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'trkpt', 'localName should be trkpt');
+ var values = ol.xml.pushParseAndPop(
+ {}, ol.format.GPX.TRKPT_PARSERS_, node, objectStack);
+ if (values) {
+ var trkValues = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ var flatCoordinates = /** @type {Array.<number>} */
+ (trkValues['flatCoordinates']);
+ ol.format.GPX.appendCoordinate_(flatCoordinates, node, values);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.parseTrkSeg_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'trkseg',
+ 'localName should be trkseg');
+ var values = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ ol.xml.parseNode(ol.format.GPX.TRKSEG_PARSERS_, node, objectStack);
+ var flatCoordinates = /** @type {Array.<number>} */
+ (values['flatCoordinates']);
+ var ends = /** @type {Array.<number>} */ (values['ends']);
+ ends.push(flatCoordinates.length);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Feature|undefined} Track.
+ */
+ol.format.GPX.readRte_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'rte', 'localName should be rte');
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+ var values = ol.xml.pushParseAndPop({
+ 'flatCoordinates': []
+ }, ol.format.GPX.RTE_PARSERS_, node, objectStack);
+ if (!values) {
+ return undefined;
+ }
+ var flatCoordinates = /** @type {Array.<number>} */
+ (values['flatCoordinates']);
+ delete values['flatCoordinates'];
+ var geometry = new ol.geom.LineString(null);
+ geometry.setFlatCoordinates(ol.geom.GeometryLayout.XYZM, flatCoordinates);
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ var feature = new ol.Feature(geometry);
+ feature.setProperties(values);
+ return feature;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Feature|undefined} Track.
+ */
+ol.format.GPX.readTrk_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'trk', 'localName should be trk');
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+ var values = ol.xml.pushParseAndPop({
+ 'flatCoordinates': [],
+ 'ends': []
+ }, ol.format.GPX.TRK_PARSERS_, node, objectStack);
+ if (!values) {
+ return undefined;
+ }
+ var flatCoordinates = /** @type {Array.<number>} */
+ (values['flatCoordinates']);
+ delete values['flatCoordinates'];
+ var ends = /** @type {Array.<number>} */ (values['ends']);
+ delete values['ends'];
+ var geometry = new ol.geom.MultiLineString(null);
+ geometry.setFlatCoordinates(
+ ol.geom.GeometryLayout.XYZM, flatCoordinates, ends);
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ var feature = new ol.Feature(geometry);
+ feature.setProperties(values);
+ return feature;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Feature|undefined} Waypoint.
+ */
+ol.format.GPX.readWpt_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'wpt', 'localName should be wpt');
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+ var values = ol.xml.pushParseAndPop(
+ {}, ol.format.GPX.WPT_PARSERS_, node, objectStack);
+ if (!values) {
+ return undefined;
+ }
+ var coordinates = ol.format.GPX.appendCoordinate_([], node, values);
+ var geometry = new ol.geom.Point(
+ coordinates, ol.geom.GeometryLayout.XYZM);
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ var feature = new ol.Feature(geometry);
+ feature.setProperties(values);
+ return feature;
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, function(Node, Array.<*>): (ol.Feature|undefined)>}
+ * @private
+ */
+ol.format.GPX.FEATURE_READER_ = {
+ 'rte': ol.format.GPX.readRte_,
+ 'trk': ol.format.GPX.readTrk_,
+ 'wpt': ol.format.GPX.readWpt_
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.GPX_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'rte': ol.xml.makeArrayPusher(ol.format.GPX.readRte_),
+ 'trk': ol.xml.makeArrayPusher(ol.format.GPX.readTrk_),
+ 'wpt': ol.xml.makeArrayPusher(ol.format.GPX.readWpt_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.LINK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'text':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readString, 'linkText'),
+ 'type':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readString, 'linkType')
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.RTE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'cmt': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'desc': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'src': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'link': ol.format.GPX.parseLink_,
+ 'number':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readNonNegativeInteger),
+ 'extensions': ol.format.GPX.parseExtensions_,
+ 'type': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'rtept': ol.format.GPX.parseRtePt_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.RTEPT_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'ele': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'time': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDateTime)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.TRK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'cmt': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'desc': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'src': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'link': ol.format.GPX.parseLink_,
+ 'number':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readNonNegativeInteger),
+ 'type': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'extensions': ol.format.GPX.parseExtensions_,
+ 'trkseg': ol.format.GPX.parseTrkSeg_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.TRKSEG_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'trkpt': ol.format.GPX.parseTrkPt_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.TRKPT_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'ele': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'time': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDateTime)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.GPX.WPT_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'ele': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'time': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDateTime),
+ 'magvar': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'geoidheight': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'cmt': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'desc': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'src': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'link': ol.format.GPX.parseLink_,
+ 'sym': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'type': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'fix': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'sat': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'hdop': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'vdop': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'pdop': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'ageofdgpsdata':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'dgpsid':
+ ol.xml.makeObjectPropertySetter(ol.format.XSD.readNonNegativeInteger),
+ 'extensions': ol.format.GPX.parseExtensions_
+ });
+
+
+/**
+ * @param {Array.<ol.Feature>} features List of features.
+ * @private
+ */
+ol.format.GPX.prototype.handleReadExtensions_ = function(features) {
+ if (!features) {
+ features = [];
+ }
+ for (var i = 0, ii = features.length; i < ii; ++i) {
+ var feature = features[i];
+ if (this.readExtensions_) {
+ var extensionsNode = feature.get('extensionsNode_') || null;
+ this.readExtensions_(feature, extensionsNode);
+ }
+ feature.set('extensionsNode_', undefined);
+ }
+};
+
+
+/**
+ * Read the first feature from a GPX source.
+ * Routes (`<rte>`) are converted into LineString geometries, and tracks (`<trk>`)
+ * into MultiLineString. Any properties on route and track waypoints are ignored.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api stable
+ */
+ol.format.GPX.prototype.readFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GPX.prototype.readFeatureFromNode = function(node, opt_options) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ if (!ol.array.includes(ol.format.GPX.NAMESPACE_URIS_, node.namespaceURI)) {
+ return null;
+ }
+ var featureReader = ol.format.GPX.FEATURE_READER_[node.localName];
+ if (!featureReader) {
+ return null;
+ }
+ var feature = featureReader(node, [this.getReadOptions(node, opt_options)]);
+ if (!feature) {
+ return null;
+ }
+ this.handleReadExtensions_([feature]);
+ return feature;
+};
+
+
+/**
+ * Read all features from a GPX source.
+ * Routes (`<rte>`) are converted into LineString geometries, and tracks (`<trk>`)
+ * into MultiLineString. Any properties on route and track waypoints are ignored.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.GPX.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.GPX.prototype.readFeaturesFromNode = function(node, opt_options) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ if (!ol.array.includes(ol.format.GPX.NAMESPACE_URIS_, node.namespaceURI)) {
+ return [];
+ }
+ if (node.localName == 'gpx') {
+ /** @type {Array.<ol.Feature>} */
+ var features = ol.xml.pushParseAndPop([], ol.format.GPX.GPX_PARSERS_,
+ node, [this.getReadOptions(node, opt_options)]);
+ if (features) {
+ this.handleReadExtensions_(features);
+ return features;
+ } else {
+ return [];
+ }
+ }
+ return [];
+};
+
+
+/**
+ * Read the projection from a GPX source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.GPX.prototype.readProjection;
+
+
+/**
+ * @param {Node} node Node.
+ * @param {string} value Value for the link's `href` attribute.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GPX.writeLink_ = function(node, value, objectStack) {
+ node.setAttribute('href', value);
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var properties = context['properties'];
+ var link = [
+ properties['linkText'],
+ properties['linkType']
+ ];
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */ ({node: node}),
+ ol.format.GPX.LINK_SERIALIZERS_, ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ link, objectStack, ol.format.GPX.LINK_SEQUENCE_);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.writeWptType_ = function(node, coordinate, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var parentNode = context.node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be an XML node');
+ var namespaceURI = parentNode.namespaceURI;
+ var properties = context['properties'];
+ //FIXME Projection handling
+ ol.xml.setAttributeNS(node, null, 'lat', coordinate[1]);
+ ol.xml.setAttributeNS(node, null, 'lon', coordinate[0]);
+ var geometryLayout = context['geometryLayout'];
+ switch (geometryLayout) {
+ case ol.geom.GeometryLayout.XYZM:
+ if (coordinate[3] !== 0) {
+ properties['time'] = coordinate[3];
+ }
+ // fall through
+ case ol.geom.GeometryLayout.XYZ:
+ if (coordinate[2] !== 0) {
+ properties['ele'] = coordinate[2];
+ }
+ break;
+ case ol.geom.GeometryLayout.XYM:
+ if (coordinate[2] !== 0) {
+ properties['time'] = coordinate[2];
+ }
+ break;
+ default:
+ // pass
+ }
+ var orderedKeys = (node.nodeName == 'rtept') ?
+ ol.format.GPX.RTEPT_TYPE_SEQUENCE_[namespaceURI] :
+ ol.format.GPX.WPT_TYPE_SEQUENCE_[namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ ({node: node, 'properties': properties}),
+ ol.format.GPX.WPT_TYPE_SERIALIZERS_, ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.writeRte_ = function(node, feature, objectStack) {
+ var options = /** @type {olx.format.WriteOptions} */ (objectStack[0]);
+ var properties = feature.getProperties();
+ var context = {node: node, 'properties': properties};
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.LineString,
+ 'geometry should be an ol.geom.LineString');
+ geometry = /** @type {ol.geom.LineString} */
+ (ol.format.Feature.transformWithOptions(geometry, true, options));
+ context['geometryLayout'] = geometry.getLayout();
+ properties['rtept'] = geometry.getCoordinates();
+ }
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.GPX.RTE_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.GPX.RTE_SERIALIZERS_, ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.writeTrk_ = function(node, feature, objectStack) {
+ var options = /** @type {olx.format.WriteOptions} */ (objectStack[0]);
+ var properties = feature.getProperties();
+ /** @type {ol.XmlNodeStackItem} */
+ var context = {node: node, 'properties': properties};
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiLineString,
+ 'geometry should be an ol.geom.MultiLineString');
+ geometry = /** @type {ol.geom.MultiLineString} */
+ (ol.format.Feature.transformWithOptions(geometry, true, options));
+ properties['trkseg'] = geometry.getLineStrings();
+ }
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.GPX.TRK_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.GPX.TRK_SERIALIZERS_, ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LineString} lineString LineString.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.writeTrkSeg_ = function(node, lineString, objectStack) {
+ /** @type {ol.XmlNodeStackItem} */
+ var context = {node: node, 'geometryLayout': lineString.getLayout(),
+ 'properties': {}};
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.GPX.TRKSEG_SERIALIZERS_, ol.format.GPX.TRKSEG_NODE_FACTORY_,
+ lineString.getCoordinates(), objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.GPX.writeWpt_ = function(node, feature, objectStack) {
+ var options = /** @type {olx.format.WriteOptions} */ (objectStack[0]);
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ context['properties'] = feature.getProperties();
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Point,
+ 'geometry should be an ol.geom.Point');
+ geometry = /** @type {ol.geom.Point} */
+ (ol.format.Feature.transformWithOptions(geometry, true, options));
+ context['geometryLayout'] = geometry.getLayout();
+ ol.format.GPX.writeWptType_(node, geometry.getCoordinates(), objectStack);
+ }
+};
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.GPX.LINK_SEQUENCE_ = ['text', 'type'];
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.LINK_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'text': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'type': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.GPX.RTE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, [
+ 'name', 'cmt', 'desc', 'src', 'link', 'number', 'type', 'rtept'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.RTE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'name': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'cmt': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'desc': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'src': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'link': ol.xml.makeChildAppender(ol.format.GPX.writeLink_),
+ 'number': ol.xml.makeChildAppender(
+ ol.format.XSD.writeNonNegativeIntegerTextNode),
+ 'type': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'rtept': ol.xml.makeArraySerializer(ol.xml.makeChildAppender(
+ ol.format.GPX.writeWptType_))
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.GPX.RTEPT_TYPE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, [
+ 'ele', 'time'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.GPX.TRK_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, [
+ 'name', 'cmt', 'desc', 'src', 'link', 'number', 'type', 'trkseg'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.TRK_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'name': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'cmt': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'desc': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'src': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'link': ol.xml.makeChildAppender(ol.format.GPX.writeLink_),
+ 'number': ol.xml.makeChildAppender(
+ ol.format.XSD.writeNonNegativeIntegerTextNode),
+ 'type': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'trkseg': ol.xml.makeArraySerializer(ol.xml.makeChildAppender(
+ ol.format.GPX.writeTrkSeg_))
+ });
+
+
+/**
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.GPX.TRKSEG_NODE_FACTORY_ = ol.xml.makeSimpleNodeFactory('trkpt');
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.TRKSEG_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'trkpt': ol.xml.makeChildAppender(ol.format.GPX.writeWptType_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.GPX.WPT_TYPE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, [
+ 'ele', 'time', 'magvar', 'geoidheight', 'name', 'cmt', 'desc', 'src',
+ 'link', 'sym', 'type', 'fix', 'sat', 'hdop', 'vdop', 'pdop',
+ 'ageofdgpsdata', 'dgpsid'
+ ]);
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.WPT_TYPE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'ele': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'time': ol.xml.makeChildAppender(ol.format.XSD.writeDateTimeTextNode),
+ 'magvar': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'geoidheight': ol.xml.makeChildAppender(
+ ol.format.XSD.writeDecimalTextNode),
+ 'name': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'cmt': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'desc': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'src': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'link': ol.xml.makeChildAppender(ol.format.GPX.writeLink_),
+ 'sym': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'type': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'fix': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'sat': ol.xml.makeChildAppender(
+ ol.format.XSD.writeNonNegativeIntegerTextNode),
+ 'hdop': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'vdop': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'pdop': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'ageofdgpsdata': ol.xml.makeChildAppender(
+ ol.format.XSD.writeDecimalTextNode),
+ 'dgpsid': ol.xml.makeChildAppender(
+ ol.format.XSD.writeNonNegativeIntegerTextNode)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, string>}
+ * @private
+ */
+ol.format.GPX.GEOMETRY_TYPE_TO_NODENAME_ = {
+ 'Point': 'wpt',
+ 'LineString': 'rte',
+ 'MultiLineString': 'trk'
+};
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.GPX.GPX_NODE_FACTORY_ = function(value, objectStack, opt_nodeName) {
+ goog.asserts.assertInstanceof(value, ol.Feature,
+ 'value should be an ol.Feature');
+ var geometry = value.getGeometry();
+ if (geometry) {
+ var nodeName = ol.format.GPX.GEOMETRY_TYPE_TO_NODENAME_[geometry.getType()];
+ if (nodeName) {
+ var parentNode = objectStack[objectStack.length - 1].node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be an XML node');
+ return ol.xml.createElementNS(parentNode.namespaceURI, nodeName);
+ }
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GPX.GPX_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.GPX.NAMESPACE_URIS_, {
+ 'rte': ol.xml.makeChildAppender(ol.format.GPX.writeRte_),
+ 'trk': ol.xml.makeChildAppender(ol.format.GPX.writeTrk_),
+ 'wpt': ol.xml.makeChildAppender(ol.format.GPX.writeWpt_)
+ });
+
+
+/**
+ * Encode an array of features in the GPX format.
+ * LineString geometries are output as routes (`<rte>`), and MultiLineString
+ * as tracks (`<trk>`).
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} Result.
+ * @api stable
+ */
+ol.format.GPX.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features in the GPX format as an XML node.
+ * LineString geometries are output as routes (`<rte>`), and MultiLineString
+ * as tracks (`<trk>`).
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ * @api
+ */
+ol.format.GPX.prototype.writeFeaturesNode = function(features, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ //FIXME Serialize metadata
+ var gpx = ol.xml.createElementNS('http://www.topografix.com/GPX/1/1', 'gpx');
+ var xmlnsUri = 'http://www.w3.org/2000/xmlns/';
+ var xmlSchemaInstanceUri = 'http://www.w3.org/2001/XMLSchema-instance';
+ ol.xml.setAttributeNS(gpx, xmlnsUri, 'xmlns:xsi', xmlSchemaInstanceUri);
+ ol.xml.setAttributeNS(gpx, xmlSchemaInstanceUri, 'xsi:schemaLocation',
+ ol.format.GPX.SCHEMA_LOCATION_);
+ gpx.setAttribute('version', '1.1');
+ gpx.setAttribute('creator', 'OpenLayers 3');
+
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
+ ({node: gpx}), ol.format.GPX.GPX_SERIALIZERS_,
+ ol.format.GPX.GPX_NODE_FACTORY_, features, [opt_options]);
+ return gpx;
+};
+
+goog.provide('ol.format.TextFeature');
+
+goog.require('goog.asserts');
+goog.require('ol.format.Feature');
+goog.require('ol.format.FormatType');
+
+
+/**
+ * @classdesc
+ * Abstract base class; normally only used for creating subclasses and not
+ * instantiated in apps.
+ * Base class for text feature formats.
+ *
+ * @constructor
+ * @extends {ol.format.Feature}
+ */
+ol.format.TextFeature = function() {
+ ol.format.Feature.call(this);
+};
+ol.inherits(ol.format.TextFeature, ol.format.Feature);
+
+
+/**
+ * @param {Document|Node|Object|string} source Source.
+ * @private
+ * @return {string} Text.
+ */
+ol.format.TextFeature.prototype.getText_ = function(source) {
+ if (typeof source === 'string') {
+ return source;
+ } else {
+ goog.asserts.fail();
+ return '';
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.getType = function() {
+ return ol.format.FormatType.TEXT;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.readFeature = function(source, opt_options) {
+ return this.readFeatureFromText(
+ this.getText_(source), this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {string} text Text.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {ol.Feature} Feature.
+ */
+ol.format.TextFeature.prototype.readFeatureFromText = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.readFeatures = function(source, opt_options) {
+ return this.readFeaturesFromText(
+ this.getText_(source), this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {string} text Text.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.TextFeature.prototype.readFeaturesFromText = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.readGeometry = function(source, opt_options) {
+ return this.readGeometryFromText(
+ this.getText_(source), this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {string} text Text.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @protected
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.TextFeature.prototype.readGeometryFromText = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.readProjection = function(source) {
+ return this.readProjectionFromText(this.getText_(source));
+};
+
+
+/**
+ * @param {string} text Text.
+ * @protected
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.TextFeature.prototype.readProjectionFromText = function(text) {
+ return this.defaultDataProjection;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.writeFeature = function(feature, opt_options) {
+ return this.writeFeatureText(feature, this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {ol.Feature} feature Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @protected
+ * @return {string} Text.
+ */
+ol.format.TextFeature.prototype.writeFeatureText = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.writeFeatures = function(
+ features, opt_options) {
+ return this.writeFeaturesText(features, this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @protected
+ * @return {string} Text.
+ */
+ol.format.TextFeature.prototype.writeFeaturesText = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TextFeature.prototype.writeGeometry = function(
+ geometry, opt_options) {
+ return this.writeGeometryText(geometry, this.adaptOptions(opt_options));
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @protected
+ * @return {string} Text.
+ */
+ol.format.TextFeature.prototype.writeGeometryText = goog.abstractMethod;
+
+goog.provide('ol.format.IGC');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.TextFeature');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.proj');
+
+
+/**
+ * IGC altitude/z. One of 'barometric', 'gps', 'none'.
+ * @enum {string}
+ */
+ol.format.IGCZ = {
+ BAROMETRIC: 'barometric',
+ GPS: 'gps',
+ NONE: 'none'
+};
+
+
+/**
+ * @classdesc
+ * Feature format for `*.igc` flight recording files.
+ *
+ * @constructor
+ * @extends {ol.format.TextFeature}
+ * @param {olx.format.IGCOptions=} opt_options Options.
+ * @api
+ */
+ol.format.IGC = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.TextFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get('EPSG:4326');
+
+ /**
+ * @private
+ * @type {ol.format.IGCZ}
+ */
+ this.altitudeMode_ = options.altitudeMode ?
+ options.altitudeMode : ol.format.IGCZ.NONE;
+
+};
+ol.inherits(ol.format.IGC, ol.format.TextFeature);
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.IGC.EXTENSIONS_ = ['.igc'];
+
+
+/**
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.format.IGC.B_RECORD_RE_ =
+ /^B(\d{2})(\d{2})(\d{2})(\d{2})(\d{5})([NS])(\d{3})(\d{5})([EW])([AV])(\d{5})(\d{5})/;
+
+
+/**
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.format.IGC.H_RECORD_RE_ = /^H.([A-Z]{3}).*?:(.*)/;
+
+
+/**
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.format.IGC.HFDTE_RECORD_RE_ = /^HFDTE(\d{2})(\d{2})(\d{2})/;
+
+
+/**
+ * A regular expression matching the newline characters `\r\n`, `\r` and `\n`.
+ *
+ * @const
+ * @type {RegExp}
+ * @private
+ */
+ol.format.IGC.NEWLINE_RE_ = /\r\n|\r|\n/;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.getExtensions = function() {
+ return ol.format.IGC.EXTENSIONS_;
+};
+
+
+/**
+ * Read the feature from the IGC source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api
+ */
+ol.format.IGC.prototype.readFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.readFeatureFromText = function(text, opt_options) {
+ var altitudeMode = this.altitudeMode_;
+ var lines = text.split(ol.format.IGC.NEWLINE_RE_);
+ /** @type {Object.<string, string>} */
+ var properties = {};
+ var flatCoordinates = [];
+ var year = 2000;
+ var month = 0;
+ var day = 1;
+ var lastDateTime = -1;
+ var i, ii;
+ for (i = 0, ii = lines.length; i < ii; ++i) {
+ var line = lines[i];
+ var m;
+ if (line.charAt(0) == 'B') {
+ m = ol.format.IGC.B_RECORD_RE_.exec(line);
+ if (m) {
+ var hour = parseInt(m[1], 10);
+ var minute = parseInt(m[2], 10);
+ var second = parseInt(m[3], 10);
+ var y = parseInt(m[4], 10) + parseInt(m[5], 10) / 60000;
+ if (m[6] == 'S') {
+ y = -y;
+ }
+ var x = parseInt(m[7], 10) + parseInt(m[8], 10) / 60000;
+ if (m[9] == 'W') {
+ x = -x;
+ }
+ flatCoordinates.push(x, y);
+ if (altitudeMode != ol.format.IGCZ.NONE) {
+ var z;
+ if (altitudeMode == ol.format.IGCZ.GPS) {
+ z = parseInt(m[11], 10);
+ } else if (altitudeMode == ol.format.IGCZ.BAROMETRIC) {
+ z = parseInt(m[12], 10);
+ } else {
+ goog.asserts.fail();
+ z = 0;
+ }
+ flatCoordinates.push(z);
+ }
+ var dateTime = Date.UTC(year, month, day, hour, minute, second);
+ // Detect UTC midnight wrap around.
+ if (dateTime < lastDateTime) {
+ dateTime = Date.UTC(year, month, day + 1, hour, minute, second);
+ }
+ flatCoordinates.push(dateTime / 1000);
+ lastDateTime = dateTime;
+ }
+ } else if (line.charAt(0) == 'H') {
+ m = ol.format.IGC.HFDTE_RECORD_RE_.exec(line);
+ if (m) {
+ day = parseInt(m[1], 10);
+ month = parseInt(m[2], 10) - 1;
+ year = 2000 + parseInt(m[3], 10);
+ } else {
+ m = ol.format.IGC.H_RECORD_RE_.exec(line);
+ if (m) {
+ properties[m[1]] = m[2].trim();
+ }
+ }
+ }
+ }
+ if (flatCoordinates.length === 0) {
+ return null;
+ }
+ var lineString = new ol.geom.LineString(null);
+ var layout = altitudeMode == ol.format.IGCZ.NONE ?
+ ol.geom.GeometryLayout.XYM : ol.geom.GeometryLayout.XYZM;
+ lineString.setFlatCoordinates(layout, flatCoordinates);
+ var feature = new ol.Feature(ol.format.Feature.transformWithOptions(
+ lineString, false, opt_options));
+ feature.setProperties(properties);
+ return feature;
+};
+
+
+/**
+ * Read the feature from the source. As IGC sources contain a single
+ * feature, this will return the feature in an array.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api
+ */
+ol.format.IGC.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.readFeaturesFromText = function(text, opt_options) {
+ var feature = this.readFeatureFromText(text, opt_options);
+ if (feature) {
+ return [feature];
+ } else {
+ return [];
+ }
+};
+
+
+/**
+ * Read the projection from the IGC source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api
+ */
+ol.format.IGC.prototype.readProjection;
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Generics method for collection-like classes and objects.
+ *
+ * @author arv@google.com (Erik Arvidsson)
+ *
+ * This file contains functions to work with collections. It supports using
+ * Map, Set, Array and Object and other classes that implement collection-like
+ * methods.
+ */
+
+
+goog.provide('goog.structs');
+
+goog.require('goog.array');
+goog.require('goog.object');
+
+
+// We treat an object as a dictionary if it has getKeys or it is an object that
+// isn't arrayLike.
+
+
+/**
+ * Returns the number of values in the collection-like object.
+ * @param {Object} col The collection-like object.
+ * @return {number} The number of values in the collection-like object.
+ */
+goog.structs.getCount = function(col) {
+ if (col.getCount && typeof col.getCount == 'function') {
+ return col.getCount();
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return col.length;
+ }
+ return goog.object.getCount(col);
+};
+
+
+/**
+ * Returns the values of the collection-like object.
+ * @param {Object} col The collection-like object.
+ * @return {!Array<?>} The values in the collection-like object.
+ */
+goog.structs.getValues = function(col) {
+ if (col.getValues && typeof col.getValues == 'function') {
+ return col.getValues();
+ }
+ if (goog.isString(col)) {
+ return col.split('');
+ }
+ if (goog.isArrayLike(col)) {
+ var rv = [];
+ var l = col.length;
+ for (var i = 0; i < l; i++) {
+ rv.push(col[i]);
+ }
+ return rv;
+ }
+ return goog.object.getValues(col);
+};
+
+
+/**
+ * Returns the keys of the collection. Some collections have no notion of
+ * keys/indexes and this function will return undefined in those cases.
+ * @param {Object} col The collection-like object.
+ * @return {!Array|undefined} The keys in the collection.
+ */
+goog.structs.getKeys = function(col) {
+ if (col.getKeys && typeof col.getKeys == 'function') {
+ return col.getKeys();
+ }
+ // if we have getValues but no getKeys we know this is a key-less collection
+ if (col.getValues && typeof col.getValues == 'function') {
+ return undefined;
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ var rv = [];
+ var l = col.length;
+ for (var i = 0; i < l; i++) {
+ rv.push(i);
+ }
+ return rv;
+ }
+
+ return goog.object.getKeys(col);
+};
+
+
+/**
+ * Whether the collection contains the given value. This is O(n) and uses
+ * equals (==) to test the existence.
+ * @param {Object} col The collection-like object.
+ * @param {*} val The value to check for.
+ * @return {boolean} True if the map contains the value.
+ */
+goog.structs.contains = function(col, val) {
+ if (col.contains && typeof col.contains == 'function') {
+ return col.contains(val);
+ }
+ if (col.containsValue && typeof col.containsValue == 'function') {
+ return col.containsValue(val);
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.contains(/** @type {!Array<?>} */ (col), val);
+ }
+ return goog.object.containsValue(col, val);
+};
+
+
+/**
+ * Whether the collection is empty.
+ * @param {Object} col The collection-like object.
+ * @return {boolean} True if empty.
+ */
+goog.structs.isEmpty = function(col) {
+ if (col.isEmpty && typeof col.isEmpty == 'function') {
+ return col.isEmpty();
+ }
+
+ // We do not use goog.string.isEmptyOrWhitespace because here we treat the
+ // string as
+ // collection and as such even whitespace matters
+
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.isEmpty(/** @type {!Array<?>} */ (col));
+ }
+ return goog.object.isEmpty(col);
+};
+
+
+/**
+ * Removes all the elements from the collection.
+ * @param {Object} col The collection-like object.
+ */
+goog.structs.clear = function(col) {
+ // NOTE(arv): This should not contain strings because strings are immutable
+ if (col.clear && typeof col.clear == 'function') {
+ col.clear();
+ } else if (goog.isArrayLike(col)) {
+ goog.array.clear(/** @type {IArrayLike<?>} */ (col));
+ } else {
+ goog.object.clear(col);
+ }
+};
+
+
+/**
+ * Calls a function for each value in a collection. The function takes
+ * three arguments; the value, the key and the collection.
+ *
+ * NOTE: This will be deprecated soon! Please use a more specific method if
+ * possible, e.g. goog.array.forEach, goog.object.forEach, etc.
+ *
+ * @param {S} col The collection-like object.
+ * @param {function(this:T,?,?,S):?} f The function to call for every value.
+ * This function takes
+ * 3 arguments (the value, the key or undefined if the collection has no
+ * notion of keys, and the collection) and the return value is irrelevant.
+ * @param {T=} opt_obj The object to be used as the value of 'this'
+ * within {@code f}.
+ * @template T,S
+ */
+goog.structs.forEach = function(col, f, opt_obj) {
+ if (col.forEach && typeof col.forEach == 'function') {
+ col.forEach(f, opt_obj);
+ } else if (goog.isArrayLike(col) || goog.isString(col)) {
+ goog.array.forEach(/** @type {!Array<?>} */ (col), f, opt_obj);
+ } else {
+ var keys = goog.structs.getKeys(col);
+ var values = goog.structs.getValues(col);
+ var l = values.length;
+ for (var i = 0; i < l; i++) {
+ f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col);
+ }
+ }
+};
+
+
+/**
+ * Calls a function for every value in the collection. When a call returns true,
+ * adds the value to a new collection (Array is returned by default).
+ *
+ * @param {S} col The collection-like object.
+ * @param {function(this:T,?,?,S):boolean} f The function to call for every
+ * value. This function takes
+ * 3 arguments (the value, the key or undefined if the collection has no
+ * notion of keys, and the collection) and should return a Boolean. If the
+ * return value is true the value is added to the result collection. If it
+ * is false the value is not included.
+ * @param {T=} opt_obj The object to be used as the value of 'this'
+ * within {@code f}.
+ * @return {!Object|!Array<?>} A new collection where the passed values are
+ * present. If col is a key-less collection an array is returned. If col
+ * has keys and values a plain old JS object is returned.
+ * @template T,S
+ */
+goog.structs.filter = function(col, f, opt_obj) {
+ if (typeof col.filter == 'function') {
+ return col.filter(f, opt_obj);
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.filter(/** @type {!Array<?>} */ (col), f, opt_obj);
+ }
+
+ var rv;
+ var keys = goog.structs.getKeys(col);
+ var values = goog.structs.getValues(col);
+ var l = values.length;
+ if (keys) {
+ rv = {};
+ for (var i = 0; i < l; i++) {
+ if (f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col)) {
+ rv[keys[i]] = values[i];
+ }
+ }
+ } else {
+ // We should not use goog.array.filter here since we want to make sure that
+ // the index is undefined as well as make sure that col is passed to the
+ // function.
+ rv = [];
+ for (var i = 0; i < l; i++) {
+ if (f.call(opt_obj, values[i], undefined, col)) {
+ rv.push(values[i]);
+ }
+ }
+ }
+ return rv;
+};
+
+
+/**
+ * Calls a function for every value in the collection and adds the result into a
+ * new collection (defaults to creating a new Array).
+ *
+ * @param {S} col The collection-like object.
+ * @param {function(this:T,?,?,S):V} f The function to call for every value.
+ * This function takes 3 arguments (the value, the key or undefined if the
+ * collection has no notion of keys, and the collection) and should return
+ * something. The result will be used as the value in the new collection.
+ * @param {T=} opt_obj The object to be used as the value of 'this'
+ * within {@code f}.
+ * @return {!Object<V>|!Array<V>} A new collection with the new values. If
+ * col is a key-less collection an array is returned. If col has keys and
+ * values a plain old JS object is returned.
+ * @template T,S,V
+ */
+goog.structs.map = function(col, f, opt_obj) {
+ if (typeof col.map == 'function') {
+ return col.map(f, opt_obj);
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.map(/** @type {!Array<?>} */ (col), f, opt_obj);
+ }
+
+ var rv;
+ var keys = goog.structs.getKeys(col);
+ var values = goog.structs.getValues(col);
+ var l = values.length;
+ if (keys) {
+ rv = {};
+ for (var i = 0; i < l; i++) {
+ rv[keys[i]] = f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col);
+ }
+ } else {
+ // We should not use goog.array.map here since we want to make sure that
+ // the index is undefined as well as make sure that col is passed to the
+ // function.
+ rv = [];
+ for (var i = 0; i < l; i++) {
+ rv[i] = f.call(/** @type {?} */ (opt_obj), values[i], undefined, col);
+ }
+ }
+ return rv;
+};
+
+
+/**
+ * Calls f for each value in a collection. If any call returns true this returns
+ * true (without checking the rest). If all returns false this returns false.
+ *
+ * @param {S} col The collection-like object.
+ * @param {function(this:T,?,?,S):boolean} f The function to call for every
+ * value. This function takes 3 arguments (the value, the key or undefined
+ * if the collection has no notion of keys, and the collection) and should
+ * return a boolean.
+ * @param {T=} opt_obj The object to be used as the value of 'this'
+ * within {@code f}.
+ * @return {boolean} True if any value passes the test.
+ * @template T,S
+ */
+goog.structs.some = function(col, f, opt_obj) {
+ if (typeof col.some == 'function') {
+ return col.some(f, opt_obj);
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.some(/** @type {!Array<?>} */ (col), f, opt_obj);
+ }
+ var keys = goog.structs.getKeys(col);
+ var values = goog.structs.getValues(col);
+ var l = values.length;
+ for (var i = 0; i < l; i++) {
+ if (f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Calls f for each value in a collection. If all calls return true this return
+ * true this returns true. If any returns false this returns false at this point
+ * and does not continue to check the remaining values.
+ *
+ * @param {S} col The collection-like object.
+ * @param {function(this:T,?,?,S):boolean} f The function to call for every
+ * value. This function takes 3 arguments (the value, the key or
+ * undefined if the collection has no notion of keys, and the collection)
+ * and should return a boolean.
+ * @param {T=} opt_obj The object to be used as the value of 'this'
+ * within {@code f}.
+ * @return {boolean} True if all key-value pairs pass the test.
+ * @template T,S
+ */
+goog.structs.every = function(col, f, opt_obj) {
+ if (typeof col.every == 'function') {
+ return col.every(f, opt_obj);
+ }
+ if (goog.isArrayLike(col) || goog.isString(col)) {
+ return goog.array.every(/** @type {!Array<?>} */ (col), f, opt_obj);
+ }
+ var keys = goog.structs.getKeys(col);
+ var values = goog.structs.getValues(col);
+ var l = values.length;
+ for (var i = 0; i < l; i++) {
+ if (!f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {
+ return false;
+ }
+ }
+ return true;
+};
+
+// Copyright 2007 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Python style iteration utilities.
+ * @author arv@google.com (Erik Arvidsson)
+ */
+
+
+goog.provide('goog.iter');
+goog.provide('goog.iter.Iterable');
+goog.provide('goog.iter.Iterator');
+goog.provide('goog.iter.StopIteration');
+
+goog.require('goog.array');
+goog.require('goog.asserts');
+goog.require('goog.functions');
+goog.require('goog.math');
+
+
+/**
+ * @typedef {goog.iter.Iterator|{length:number}|{__iterator__}}
+ */
+goog.iter.Iterable;
+
+
+/**
+ * Singleton Error object that is used to terminate iterations.
+ * @const {!Error}
+ */
+goog.iter.StopIteration = ('StopIteration' in goog.global) ?
+ // For script engines that support legacy iterators.
+ goog.global['StopIteration'] :
+ {message: 'StopIteration', stack: ''};
+
+
+
+/**
+ * Class/interface for iterators. An iterator needs to implement a {@code next}
+ * method and it needs to throw a {@code goog.iter.StopIteration} when the
+ * iteration passes beyond the end. Iterators have no {@code hasNext} method.
+ * It is recommended to always use the helper functions to iterate over the
+ * iterator or in case you are only targeting JavaScript 1.7 for in loops.
+ * @constructor
+ * @template VALUE
+ */
+goog.iter.Iterator = function() {};
+
+
+/**
+ * Returns the next value of the iteration. This will throw the object
+ * {@see goog.iter#StopIteration} when the iteration passes the end.
+ * @return {VALUE} Any object or value.
+ */
+goog.iter.Iterator.prototype.next = function() {
+ throw goog.iter.StopIteration;
+};
+
+
+/**
+ * Returns the {@code Iterator} object itself. This is used to implement
+ * the iterator protocol in JavaScript 1.7
+ * @param {boolean=} opt_keys Whether to return the keys or values. Default is
+ * to only return the values. This is being used by the for-in loop (true)
+ * and the for-each-in loop (false). Even though the param gives a hint
+ * about what the iterator will return there is no guarantee that it will
+ * return the keys when true is passed.
+ * @return {!goog.iter.Iterator<VALUE>} The object itself.
+ */
+goog.iter.Iterator.prototype.__iterator__ = function(opt_keys) {
+ return this;
+};
+
+
+/**
+ * Returns an iterator that knows how to iterate over the values in the object.
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable If the
+ * object is an iterator it will be returned as is. If the object has an
+ * {@code __iterator__} method that will be called to get the value
+ * iterator. If the object is an array-like object we create an iterator
+ * for that.
+ * @return {!goog.iter.Iterator<VALUE>} An iterator that knows how to iterate
+ * over the values in {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.toIterator = function(iterable) {
+ if (iterable instanceof goog.iter.Iterator) {
+ return iterable;
+ }
+ if (typeof iterable.__iterator__ == 'function') {
+ return iterable.__iterator__(false);
+ }
+ if (goog.isArrayLike(iterable)) {
+ var i = 0;
+ var newIter = new goog.iter.Iterator;
+ newIter.next = function() {
+ while (true) {
+ if (i >= iterable.length) {
+ throw goog.iter.StopIteration;
+ }
+ // Don't include deleted elements.
+ if (!(i in iterable)) {
+ i++;
+ continue;
+ }
+ return iterable[i++];
+ }
+ };
+ return newIter;
+ }
+
+
+ // TODO(arv): Should we fall back on goog.structs.getValues()?
+ throw Error('Not implemented');
+};
+
+
+/**
+ * Calls a function for each element in the iterator with the element of the
+ * iterator passed as argument.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to iterate over. If the iterable is an object {@code toIterator} will be
+ * called on it.
+ * @param {function(this:THIS,VALUE,?,!goog.iter.Iterator<VALUE>)} f
+ * The function to call for every element. This function takes 3 arguments
+ * (the element, undefined, and the iterator) and the return value is
+ * irrelevant. The reason for passing undefined as the second argument is
+ * so that the same function can be used in {@see goog.array#forEach} as
+ * well as others. The third parameter is of type "number" for
+ * arraylike objects, undefined, otherwise.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @template THIS, VALUE
+ */
+goog.iter.forEach = function(iterable, f, opt_obj) {
+ if (goog.isArrayLike(iterable)) {
+ /** @preserveTry */
+ try {
+ // NOTES: this passes the index number to the second parameter
+ // of the callback contrary to the documentation above.
+ goog.array.forEach(
+ /** @type {IArrayLike<?>} */ (iterable), f, opt_obj);
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ }
+ } else {
+ iterable = goog.iter.toIterator(iterable);
+ /** @preserveTry */
+ try {
+ while (true) {
+ f.call(opt_obj, iterable.next(), undefined, iterable);
+ }
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ }
+ }
+};
+
+
+/**
+ * Calls a function for every element in the iterator, and if the function
+ * returns true adds the element to a new iterator.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to iterate over.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every element. This function takes 3 arguments
+ * (the element, undefined, and the iterator) and should return a boolean.
+ * If the return value is true the element will be included in the returned
+ * iterator. If it is false the element is not included.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator in which only elements
+ * that passed the test are present.
+ * @template THIS, VALUE
+ */
+goog.iter.filter = function(iterable, f, opt_obj) {
+ var iterator = goog.iter.toIterator(iterable);
+ var newIter = new goog.iter.Iterator;
+ newIter.next = function() {
+ while (true) {
+ var val = iterator.next();
+ if (f.call(opt_obj, val, undefined, iterator)) {
+ return val;
+ }
+ }
+ };
+ return newIter;
+};
+
+
+/**
+ * Calls a function for every element in the iterator, and if the function
+ * returns false adds the element to a new iterator.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to iterate over.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every element. This function takes 3 arguments
+ * (the element, undefined, and the iterator) and should return a boolean.
+ * If the return value is false the element will be included in the returned
+ * iterator. If it is true the element is not included.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator in which only elements
+ * that did not pass the test are present.
+ * @template THIS, VALUE
+ */
+goog.iter.filterFalse = function(iterable, f, opt_obj) {
+ return goog.iter.filter(iterable, goog.functions.not(f), opt_obj);
+};
+
+
+/**
+ * Creates a new iterator that returns the values in a range. This function
+ * can take 1, 2 or 3 arguments:
+ * <pre>
+ * range(5) same as range(0, 5, 1)
+ * range(2, 5) same as range(2, 5, 1)
+ * </pre>
+ *
+ * @param {number} startOrStop The stop value if only one argument is provided.
+ * The start value if 2 or more arguments are provided. If only one
+ * argument is used the start value is 0.
+ * @param {number=} opt_stop The stop value. If left out then the first
+ * argument is used as the stop value.
+ * @param {number=} opt_step The number to increment with between each call to
+ * next. This can be negative.
+ * @return {!goog.iter.Iterator<number>} A new iterator that returns the values
+ * in the range.
+ */
+goog.iter.range = function(startOrStop, opt_stop, opt_step) {
+ var start = 0;
+ var stop = startOrStop;
+ var step = opt_step || 1;
+ if (arguments.length > 1) {
+ start = startOrStop;
+ stop = opt_stop;
+ }
+ if (step == 0) {
+ throw Error('Range step argument must not be zero');
+ }
+
+ var newIter = new goog.iter.Iterator;
+ newIter.next = function() {
+ if (step > 0 && start >= stop || step < 0 && start <= stop) {
+ throw goog.iter.StopIteration;
+ }
+ var rv = start;
+ start += step;
+ return rv;
+ };
+ return newIter;
+};
+
+
+/**
+ * Joins the values in a iterator with a delimiter.
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to get the values from.
+ * @param {string} deliminator The text to put between the values.
+ * @return {string} The joined value string.
+ * @template VALUE
+ */
+goog.iter.join = function(iterable, deliminator) {
+ return goog.iter.toArray(iterable).join(deliminator);
+};
+
+
+/**
+ * For every element in the iterator call a function and return a new iterator
+ * with that value.
+ *
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterator to iterate over.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):RESULT} f
+ * The function to call for every element. This function takes 3 arguments
+ * (the element, undefined, and the iterator) and should return a new value.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {!goog.iter.Iterator<RESULT>} A new iterator that returns the
+ * results of applying the function to each element in the original
+ * iterator.
+ * @template THIS, VALUE, RESULT
+ */
+goog.iter.map = function(iterable, f, opt_obj) {
+ var iterator = goog.iter.toIterator(iterable);
+ var newIter = new goog.iter.Iterator;
+ newIter.next = function() {
+ var val = iterator.next();
+ return f.call(opt_obj, val, undefined, iterator);
+ };
+ return newIter;
+};
+
+
+/**
+ * Passes every element of an iterator into a function and accumulates the
+ * result.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to iterate over.
+ * @param {function(this:THIS,VALUE,VALUE):VALUE} f The function to call for
+ * every element. This function takes 2 arguments (the function's previous
+ * result or the initial value, and the value of the current element).
+ * function(previousValue, currentElement) : newValue.
+ * @param {VALUE} val The initial value to pass into the function on the first
+ * call.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * f.
+ * @return {VALUE} Result of evaluating f repeatedly across the values of
+ * the iterator.
+ * @template THIS, VALUE
+ */
+goog.iter.reduce = function(iterable, f, val, opt_obj) {
+ var rval = val;
+ goog.iter.forEach(
+ iterable, function(val) { rval = f.call(opt_obj, rval, val); });
+ return rval;
+};
+
+
+/**
+ * Goes through the values in the iterator. Calls f for each of these, and if
+ * any of them returns true, this returns true (without checking the rest). If
+ * all return false this will return false.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * object.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every value. This function takes 3 arguments
+ * (the value, undefined, and the iterator) and should return a boolean.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {boolean} true if any value passes the test.
+ * @template THIS, VALUE
+ */
+goog.iter.some = function(iterable, f, opt_obj) {
+ iterable = goog.iter.toIterator(iterable);
+ /** @preserveTry */
+ try {
+ while (true) {
+ if (f.call(opt_obj, iterable.next(), undefined, iterable)) {
+ return true;
+ }
+ }
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Goes through the values in the iterator. Calls f for each of these and if any
+ * of them returns false this returns false (without checking the rest). If all
+ * return true this will return true.
+ *
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * object.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every value. This function takes 3 arguments
+ * (the value, undefined, and the iterator) and should return a boolean.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {boolean} true if every value passes the test.
+ * @template THIS, VALUE
+ */
+goog.iter.every = function(iterable, f, opt_obj) {
+ iterable = goog.iter.toIterator(iterable);
+ /** @preserveTry */
+ try {
+ while (true) {
+ if (!f.call(opt_obj, iterable.next(), undefined, iterable)) {
+ return false;
+ }
+ }
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ }
+ return true;
+};
+
+
+/**
+ * Takes zero or more iterables and returns one iterator that will iterate over
+ * them in the order chained.
+ * @param {...!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} var_args Any
+ * number of iterable objects.
+ * @return {!goog.iter.Iterator<VALUE>} Returns a new iterator that will
+ * iterate over all the given iterables' contents.
+ * @template VALUE
+ */
+goog.iter.chain = function(var_args) {
+ return goog.iter.chainFromIterable(arguments);
+};
+
+
+/**
+ * Takes a single iterable containing zero or more iterables and returns one
+ * iterator that will iterate over each one in the order given.
+ * @see https://goo.gl/5NRp5d
+ * @param {goog.iter.Iterable} iterable The iterable of iterables to chain.
+ * @return {!goog.iter.Iterator<VALUE>} Returns a new iterator that will
+ * iterate over all the contents of the iterables contained within
+ * {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.chainFromIterable = function(iterable) {
+ var iterator = goog.iter.toIterator(iterable);
+ var iter = new goog.iter.Iterator();
+ var current = null;
+
+ iter.next = function() {
+ while (true) {
+ if (current == null) {
+ var it = iterator.next();
+ current = goog.iter.toIterator(it);
+ }
+ try {
+ return current.next();
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ current = null;
+ }
+ }
+ };
+
+ return iter;
+};
+
+
+/**
+ * Builds a new iterator that iterates over the original, but skips elements as
+ * long as a supplied function returns true.
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * object.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every value. This function takes 3 arguments
+ * (the value, undefined, and the iterator) and should return a boolean.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator that drops elements from
+ * the original iterator as long as {@code f} is true.
+ * @template THIS, VALUE
+ */
+goog.iter.dropWhile = function(iterable, f, opt_obj) {
+ var iterator = goog.iter.toIterator(iterable);
+ var newIter = new goog.iter.Iterator;
+ var dropping = true;
+ newIter.next = function() {
+ while (true) {
+ var val = iterator.next();
+ if (dropping && f.call(opt_obj, val, undefined, iterator)) {
+ continue;
+ } else {
+ dropping = false;
+ }
+ return val;
+ }
+ };
+ return newIter;
+};
+
+
+/**
+ * Builds a new iterator that iterates over the original, but only as long as a
+ * supplied function returns true.
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * object.
+ * @param {
+ * function(this:THIS,VALUE,undefined,!goog.iter.Iterator<VALUE>):boolean} f
+ * The function to call for every value. This function takes 3 arguments
+ * (the value, undefined, and the iterator) and should return a boolean.
+ * @param {THIS=} opt_obj This is used as the 'this' object in f when called.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator that keeps elements in
+ * the original iterator as long as the function is true.
+ * @template THIS, VALUE
+ */
+goog.iter.takeWhile = function(iterable, f, opt_obj) {
+ var iterator = goog.iter.toIterator(iterable);
+ var iter = new goog.iter.Iterator();
+ iter.next = function() {
+ var val = iterator.next();
+ if (f.call(opt_obj, val, undefined, iterator)) {
+ return val;
+ }
+ throw goog.iter.StopIteration;
+ };
+ return iter;
+};
+
+
+/**
+ * Converts the iterator to an array
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterator
+ * to convert to an array.
+ * @return {!Array<VALUE>} An array of the elements the iterator iterates over.
+ * @template VALUE
+ */
+goog.iter.toArray = function(iterable) {
+ // Fast path for array-like.
+ if (goog.isArrayLike(iterable)) {
+ return goog.array.toArray(/** @type {!IArrayLike<?>} */ (iterable));
+ }
+ iterable = goog.iter.toIterator(iterable);
+ var array = [];
+ goog.iter.forEach(iterable, function(val) { array.push(val); });
+ return array;
+};
+
+
+/**
+ * Iterates over two iterables and returns true if they contain the same
+ * sequence of elements and have the same length.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable1 The first
+ * iterable object.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable2 The second
+ * iterable object.
+ * @param {function(VALUE,VALUE):boolean=} opt_equalsFn Optional comparison
+ * function.
+ * Should take two arguments to compare, and return true if the arguments
+ * are equal. Defaults to {@link goog.array.defaultCompareEquality} which
+ * compares the elements using the built-in '===' operator.
+ * @return {boolean} true if the iterables contain the same sequence of elements
+ * and have the same length.
+ * @template VALUE
+ */
+goog.iter.equals = function(iterable1, iterable2, opt_equalsFn) {
+ var fillValue = {};
+ var pairs = goog.iter.zipLongest(fillValue, iterable1, iterable2);
+ var equalsFn = opt_equalsFn || goog.array.defaultCompareEquality;
+ return goog.iter.every(
+ pairs, function(pair) { return equalsFn(pair[0], pair[1]); });
+};
+
+
+/**
+ * Advances the iterator to the next position, returning the given default value
+ * instead of throwing an exception if the iterator has no more entries.
+ * @param {goog.iter.Iterator<VALUE>|goog.iter.Iterable} iterable The iterable
+ * object.
+ * @param {VALUE} defaultValue The value to return if the iterator is empty.
+ * @return {VALUE} The next item in the iteration, or defaultValue if the
+ * iterator was empty.
+ * @template VALUE
+ */
+goog.iter.nextOrValue = function(iterable, defaultValue) {
+ try {
+ return goog.iter.toIterator(iterable).next();
+ } catch (e) {
+ if (e != goog.iter.StopIteration) {
+ throw e;
+ }
+ return defaultValue;
+ }
+};
+
+
+/**
+ * Cartesian product of zero or more sets. Gives an iterator that gives every
+ * combination of one element chosen from each set. For example,
+ * ([1, 2], [3, 4]) gives ([1, 3], [1, 4], [2, 3], [2, 4]).
+ * @see http://docs.python.org/library/itertools.html#itertools.product
+ * @param {...!IArrayLike<VALUE>} var_args Zero or more sets, as
+ * arrays.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} An iterator that gives each
+ * n-tuple (as an array).
+ * @template VALUE
+ */
+goog.iter.product = function(var_args) {
+ var someArrayEmpty =
+ goog.array.some(arguments, function(arr) { return !arr.length; });
+
+ // An empty set in a cartesian product gives an empty set.
+ if (someArrayEmpty || !arguments.length) {
+ return new goog.iter.Iterator();
+ }
+
+ var iter = new goog.iter.Iterator();
+ var arrays = arguments;
+
+ // The first indices are [0, 0, ...]
+ var indicies = goog.array.repeat(0, arrays.length);
+
+ iter.next = function() {
+
+ if (indicies) {
+ var retVal = goog.array.map(indicies, function(valueIndex, arrayIndex) {
+ return arrays[arrayIndex][valueIndex];
+ });
+
+ // Generate the next-largest indices for the next call.
+ // Increase the rightmost index. If it goes over, increase the next
+ // rightmost (like carry-over addition).
+ for (var i = indicies.length - 1; i >= 0; i--) {
+ // Assertion prevents compiler warning below.
+ goog.asserts.assert(indicies);
+ if (indicies[i] < arrays[i].length - 1) {
+ indicies[i]++;
+ break;
+ }
+
+ // We're at the last indices (the last element of every array), so
+ // the iteration is over on the next call.
+ if (i == 0) {
+ indicies = null;
+ break;
+ }
+ // Reset the index in this column and loop back to increment the
+ // next one.
+ indicies[i] = 0;
+ }
+ return retVal;
+ }
+
+ throw goog.iter.StopIteration;
+ };
+
+ return iter;
+};
+
+
+/**
+ * Create an iterator to cycle over the iterable's elements indefinitely.
+ * For example, ([1, 2, 3]) would return : 1, 2, 3, 1, 2, 3, ...
+ * @see: http://docs.python.org/library/itertools.html#itertools.cycle.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable object.
+ * @return {!goog.iter.Iterator<VALUE>} An iterator that iterates indefinitely
+ * over the values in {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.cycle = function(iterable) {
+ var baseIterator = goog.iter.toIterator(iterable);
+
+ // We maintain a cache to store the iterable elements as we iterate
+ // over them. The cache is used to return elements once we have
+ // iterated over the iterable once.
+ var cache = [];
+ var cacheIndex = 0;
+
+ var iter = new goog.iter.Iterator();
+
+ // This flag is set after the iterable is iterated over once
+ var useCache = false;
+
+ iter.next = function() {
+ var returnElement = null;
+
+ // Pull elements off the original iterator if not using cache
+ if (!useCache) {
+ try {
+ // Return the element from the iterable
+ returnElement = baseIterator.next();
+ cache.push(returnElement);
+ return returnElement;
+ } catch (e) {
+ // If an exception other than StopIteration is thrown
+ // or if there are no elements to iterate over (the iterable was empty)
+ // throw an exception
+ if (e != goog.iter.StopIteration || goog.array.isEmpty(cache)) {
+ throw e;
+ }
+ // set useCache to true after we know that a 'StopIteration' exception
+ // was thrown and the cache is not empty (to handle the 'empty iterable'
+ // use case)
+ useCache = true;
+ }
+ }
+
+ returnElement = cache[cacheIndex];
+ cacheIndex = (cacheIndex + 1) % cache.length;
+
+ return returnElement;
+ };
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that counts indefinitely from a starting value.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.count
+ * @param {number=} opt_start The starting value. Default is 0.
+ * @param {number=} opt_step The number to increment with between each call to
+ * next. Negative and floating point numbers are allowed. Default is 1.
+ * @return {!goog.iter.Iterator<number>} A new iterator that returns the values
+ * in the series.
+ */
+goog.iter.count = function(opt_start, opt_step) {
+ var counter = opt_start || 0;
+ var step = goog.isDef(opt_step) ? opt_step : 1;
+ var iter = new goog.iter.Iterator();
+
+ iter.next = function() {
+ var returnValue = counter;
+ counter += step;
+ return returnValue;
+ };
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that returns the same object or value repeatedly.
+ * @param {VALUE} value Any object or value to repeat.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator that returns the
+ * repeated value.
+ * @template VALUE
+ */
+goog.iter.repeat = function(value) {
+ var iter = new goog.iter.Iterator();
+
+ iter.next = goog.functions.constant(value);
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that returns running totals from the numbers in
+ * {@code iterable}. For example, the array {@code [1, 2, 3, 4, 5]} yields
+ * {@code 1 -> 3 -> 6 -> 10 -> 15}.
+ * @see http://docs.python.org/3.2/library/itertools.html#itertools.accumulate
+ * @param {!goog.iter.Iterable<number>} iterable The iterable of numbers to
+ * accumulate.
+ * @return {!goog.iter.Iterator<number>} A new iterator that returns the
+ * numbers in the series.
+ */
+goog.iter.accumulate = function(iterable) {
+ var iterator = goog.iter.toIterator(iterable);
+ var total = 0;
+ var iter = new goog.iter.Iterator();
+
+ iter.next = function() {
+ total += iterator.next();
+ return total;
+ };
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that returns arrays containing the ith elements from the
+ * provided iterables. The returned arrays will be the same size as the number
+ * of iterables given in {@code var_args}. Once the shortest iterable is
+ * exhausted, subsequent calls to {@code next()} will throw
+ * {@code goog.iter.StopIteration}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.izip
+ * @param {...!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} var_args Any
+ * number of iterable objects.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} A new iterator that returns
+ * arrays of elements from the provided iterables.
+ * @template VALUE
+ */
+goog.iter.zip = function(var_args) {
+ var args = arguments;
+ var iter = new goog.iter.Iterator();
+
+ if (args.length > 0) {
+ var iterators = goog.array.map(args, goog.iter.toIterator);
+ iter.next = function() {
+ var arr = goog.array.map(iterators, function(it) { return it.next(); });
+ return arr;
+ };
+ }
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that returns arrays containing the ith elements from the
+ * provided iterables. The returned arrays will be the same size as the number
+ * of iterables given in {@code var_args}. Shorter iterables will be extended
+ * with {@code fillValue}. Once the longest iterable is exhausted, subsequent
+ * calls to {@code next()} will throw {@code goog.iter.StopIteration}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.izip_longest
+ * @param {VALUE} fillValue The object or value used to fill shorter iterables.
+ * @param {...!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} var_args Any
+ * number of iterable objects.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} A new iterator that returns
+ * arrays of elements from the provided iterables.
+ * @template VALUE
+ */
+goog.iter.zipLongest = function(fillValue, var_args) {
+ var args = goog.array.slice(arguments, 1);
+ var iter = new goog.iter.Iterator();
+
+ if (args.length > 0) {
+ var iterators = goog.array.map(args, goog.iter.toIterator);
+
+ iter.next = function() {
+ var iteratorsHaveValues = false; // false when all iterators are empty.
+ var arr = goog.array.map(iterators, function(it) {
+ var returnValue;
+ try {
+ returnValue = it.next();
+ // Iterator had a value, so we've not exhausted the iterators.
+ // Set flag accordingly.
+ iteratorsHaveValues = true;
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ returnValue = fillValue;
+ }
+ return returnValue;
+ });
+
+ if (!iteratorsHaveValues) {
+ throw goog.iter.StopIteration;
+ }
+ return arr;
+ };
+ }
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that filters {@code iterable} based on a series of
+ * {@code selectors}. On each call to {@code next()}, one item is taken from
+ * both the {@code iterable} and {@code selectors} iterators. If the item from
+ * {@code selectors} evaluates to true, the item from {@code iterable} is given.
+ * Otherwise, it is skipped. Once either {@code iterable} or {@code selectors}
+ * is exhausted, subsequent calls to {@code next()} will throw
+ * {@code goog.iter.StopIteration}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.compress
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to filter.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} selectors An
+ * iterable of items to be evaluated in a boolean context to determine if
+ * the corresponding element in {@code iterable} should be included in the
+ * result.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator that returns the
+ * filtered values.
+ * @template VALUE
+ */
+goog.iter.compress = function(iterable, selectors) {
+ var selectorIterator = goog.iter.toIterator(selectors);
+
+ return goog.iter.filter(
+ iterable, function() { return !!selectorIterator.next(); });
+};
+
+
+
+/**
+ * Implements the {@code goog.iter.groupBy} iterator.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to group.
+ * @param {function(VALUE): KEY=} opt_keyFunc Optional function for
+ * determining the key value for each group in the {@code iterable}. Default
+ * is the identity function.
+ * @constructor
+ * @extends {goog.iter.Iterator<!Array<?>>}
+ * @template KEY, VALUE
+ * @private
+ */
+goog.iter.GroupByIterator_ = function(iterable, opt_keyFunc) {
+
+ /**
+ * The iterable to group, coerced to an iterator.
+ * @type {!goog.iter.Iterator}
+ */
+ this.iterator = goog.iter.toIterator(iterable);
+
+ /**
+ * A function for determining the key value for each element in the iterable.
+ * If no function is provided, the identity function is used and returns the
+ * element unchanged.
+ * @type {function(VALUE): KEY}
+ */
+ this.keyFunc = opt_keyFunc || goog.functions.identity;
+
+ /**
+ * The target key for determining the start of a group.
+ * @type {KEY}
+ */
+ this.targetKey;
+
+ /**
+ * The current key visited during iteration.
+ * @type {KEY}
+ */
+ this.currentKey;
+
+ /**
+ * The current value being added to the group.
+ * @type {VALUE}
+ */
+ this.currentValue;
+};
+goog.inherits(goog.iter.GroupByIterator_, goog.iter.Iterator);
+
+
+/** @override */
+goog.iter.GroupByIterator_.prototype.next = function() {
+ while (this.currentKey == this.targetKey) {
+ this.currentValue = this.iterator.next(); // Exits on StopIteration
+ this.currentKey = this.keyFunc(this.currentValue);
+ }
+ this.targetKey = this.currentKey;
+ return [this.currentKey, this.groupItems_(this.targetKey)];
+};
+
+
+/**
+ * Performs the grouping of objects using the given key.
+ * @param {KEY} targetKey The target key object for the group.
+ * @return {!Array<VALUE>} An array of grouped objects.
+ * @private
+ */
+goog.iter.GroupByIterator_.prototype.groupItems_ = function(targetKey) {
+ var arr = [];
+ while (this.currentKey == targetKey) {
+ arr.push(this.currentValue);
+ try {
+ this.currentValue = this.iterator.next();
+ } catch (ex) {
+ if (ex !== goog.iter.StopIteration) {
+ throw ex;
+ }
+ break;
+ }
+ this.currentKey = this.keyFunc(this.currentValue);
+ }
+ return arr;
+};
+
+
+/**
+ * Creates an iterator that returns arrays containing elements from the
+ * {@code iterable} grouped by a key value. For iterables with repeated
+ * elements (i.e. sorted according to a particular key function), this function
+ * has a {@code uniq}-like effect. For example, grouping the array:
+ * {@code [A, B, B, C, C, A]} produces
+ * {@code [A, [A]], [B, [B, B]], [C, [C, C]], [A, [A]]}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.groupby
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to group.
+ * @param {function(VALUE): KEY=} opt_keyFunc Optional function for
+ * determining the key value for each group in the {@code iterable}. Default
+ * is the identity function.
+ * @return {!goog.iter.Iterator<!Array<?>>} A new iterator that returns
+ * arrays of consecutive key and groups.
+ * @template KEY, VALUE
+ */
+goog.iter.groupBy = function(iterable, opt_keyFunc) {
+ return new goog.iter.GroupByIterator_(iterable, opt_keyFunc);
+};
+
+
+/**
+ * Gives an iterator that gives the result of calling the given function
+ * <code>f</code> with the arguments taken from the next element from
+ * <code>iterable</code> (the elements are expected to also be iterables).
+ *
+ * Similar to {@see goog.iter#map} but allows the function to accept multiple
+ * arguments from the iterable.
+ *
+ * @param {!goog.iter.Iterable<!goog.iter.Iterable>} iterable The iterable of
+ * iterables to iterate over.
+ * @param {function(this:THIS,...*):RESULT} f The function to call for every
+ * element. This function takes N+2 arguments, where N represents the
+ * number of items from the next element of the iterable. The two
+ * additional arguments passed to the function are undefined and the
+ * iterator itself. The function should return a new value.
+ * @param {THIS=} opt_obj The object to be used as the value of 'this' within
+ * {@code f}.
+ * @return {!goog.iter.Iterator<RESULT>} A new iterator that returns the
+ * results of applying the function to each element in the original
+ * iterator.
+ * @template THIS, RESULT
+ */
+goog.iter.starMap = function(iterable, f, opt_obj) {
+ var iterator = goog.iter.toIterator(iterable);
+ var iter = new goog.iter.Iterator();
+
+ iter.next = function() {
+ var args = goog.iter.toArray(iterator.next());
+ return f.apply(opt_obj, goog.array.concat(args, undefined, iterator));
+ };
+
+ return iter;
+};
+
+
+/**
+ * Returns an array of iterators each of which can iterate over the values in
+ * {@code iterable} without advancing the others.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.tee
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to tee.
+ * @param {number=} opt_num The number of iterators to create. Default is 2.
+ * @return {!Array<goog.iter.Iterator<VALUE>>} An array of iterators.
+ * @template VALUE
+ */
+goog.iter.tee = function(iterable, opt_num) {
+ var iterator = goog.iter.toIterator(iterable);
+ var num = goog.isNumber(opt_num) ? opt_num : 2;
+ var buffers =
+ goog.array.map(goog.array.range(num), function() { return []; });
+
+ var addNextIteratorValueToBuffers = function() {
+ var val = iterator.next();
+ goog.array.forEach(buffers, function(buffer) { buffer.push(val); });
+ };
+
+ var createIterator = function(buffer) {
+ // Each tee'd iterator has an associated buffer (initially empty). When a
+ // tee'd iterator's buffer is empty, it calls
+ // addNextIteratorValueToBuffers(), adding the next value to all tee'd
+ // iterators' buffers, and then returns that value. This allows each
+ // iterator to be advanced independently.
+ var iter = new goog.iter.Iterator();
+
+ iter.next = function() {
+ if (goog.array.isEmpty(buffer)) {
+ addNextIteratorValueToBuffers();
+ }
+ goog.asserts.assert(!goog.array.isEmpty(buffer));
+ return buffer.shift();
+ };
+
+ return iter;
+ };
+
+ return goog.array.map(buffers, createIterator);
+};
+
+
+/**
+ * Creates an iterator that returns arrays containing a count and an element
+ * obtained from the given {@code iterable}.
+ * @see http://docs.python.org/2/library/functions.html#enumerate
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to enumerate.
+ * @param {number=} opt_start Optional starting value. Default is 0.
+ * @return {!goog.iter.Iterator<!Array<?>>} A new iterator containing
+ * count/item pairs.
+ * @template VALUE
+ */
+goog.iter.enumerate = function(iterable, opt_start) {
+ return goog.iter.zip(goog.iter.count(opt_start), iterable);
+};
+
+
+/**
+ * Creates an iterator that returns the first {@code limitSize} elements from an
+ * iterable. If this number is greater than the number of elements in the
+ * iterable, all the elements are returned.
+ * @see http://goo.gl/V0sihp Inspired by the limit iterator in Guava.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to limit.
+ * @param {number} limitSize The maximum number of elements to return.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator containing
+ * {@code limitSize} elements.
+ * @template VALUE
+ */
+goog.iter.limit = function(iterable, limitSize) {
+ goog.asserts.assert(goog.math.isInt(limitSize) && limitSize >= 0);
+
+ var iterator = goog.iter.toIterator(iterable);
+
+ var iter = new goog.iter.Iterator();
+ var remaining = limitSize;
+
+ iter.next = function() {
+ if (remaining-- > 0) {
+ return iterator.next();
+ }
+ throw goog.iter.StopIteration;
+ };
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that is advanced {@code count} steps ahead. Consumed
+ * values are silently discarded. If {@code count} is greater than the number
+ * of elements in {@code iterable}, an empty iterator is returned. Subsequent
+ * calls to {@code next()} will throw {@code goog.iter.StopIteration}.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to consume.
+ * @param {number} count The number of elements to consume from the iterator.
+ * @return {!goog.iter.Iterator<VALUE>} An iterator advanced zero or more steps
+ * ahead.
+ * @template VALUE
+ */
+goog.iter.consume = function(iterable, count) {
+ goog.asserts.assert(goog.math.isInt(count) && count >= 0);
+
+ var iterator = goog.iter.toIterator(iterable);
+
+ while (count-- > 0) {
+ goog.iter.nextOrValue(iterator, null);
+ }
+
+ return iterator;
+};
+
+
+/**
+ * Creates an iterator that returns a range of elements from an iterable.
+ * Similar to {@see goog.array#slice} but does not support negative indexes.
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to slice.
+ * @param {number} start The index of the first element to return.
+ * @param {number=} opt_end The index after the last element to return. If
+ * defined, must be greater than or equal to {@code start}.
+ * @return {!goog.iter.Iterator<VALUE>} A new iterator containing a slice of
+ * the original.
+ * @template VALUE
+ */
+goog.iter.slice = function(iterable, start, opt_end) {
+ goog.asserts.assert(goog.math.isInt(start) && start >= 0);
+
+ var iterator = goog.iter.consume(iterable, start);
+
+ if (goog.isNumber(opt_end)) {
+ goog.asserts.assert(goog.math.isInt(opt_end) && opt_end >= start);
+ iterator = goog.iter.limit(iterator, opt_end - start /* limitSize */);
+ }
+
+ return iterator;
+};
+
+
+/**
+ * Checks an array for duplicate elements.
+ * @param {?IArrayLike<VALUE>} arr The array to check for
+ * duplicates.
+ * @return {boolean} True, if the array contains duplicates, false otherwise.
+ * @private
+ * @template VALUE
+ */
+// TODO(user): Consider moving this into goog.array as a public function.
+goog.iter.hasDuplicates_ = function(arr) {
+ var deduped = [];
+ goog.array.removeDuplicates(arr, deduped);
+ return arr.length != deduped.length;
+};
+
+
+/**
+ * Creates an iterator that returns permutations of elements in
+ * {@code iterable}.
+ *
+ * Permutations are obtained by taking the Cartesian product of
+ * {@code opt_length} iterables and filtering out those with repeated
+ * elements. For example, the permutations of {@code [1,2,3]} are
+ * {@code [[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], [3,2,1]]}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.permutations
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable from which to generate permutations.
+ * @param {number=} opt_length Length of each permutation. If omitted, defaults
+ * to the length of {@code iterable}.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} A new iterator containing the
+ * permutations of {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.permutations = function(iterable, opt_length) {
+ var elements = goog.iter.toArray(iterable);
+ var length = goog.isNumber(opt_length) ? opt_length : elements.length;
+
+ var sets = goog.array.repeat(elements, length);
+ var product = goog.iter.product.apply(undefined, sets);
+
+ return goog.iter.filter(
+ product, function(arr) { return !goog.iter.hasDuplicates_(arr); });
+};
+
+
+/**
+ * Creates an iterator that returns combinations of elements from
+ * {@code iterable}.
+ *
+ * Combinations are obtained by taking the {@see goog.iter#permutations} of
+ * {@code iterable} and filtering those whose elements appear in the order they
+ * are encountered in {@code iterable}. For example, the 3-length combinations
+ * of {@code [0,1,2,3]} are {@code [[0,1,2], [0,1,3], [0,2,3], [1,2,3]]}.
+ * @see http://docs.python.org/2/library/itertools.html#itertools.combinations
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable from which to generate combinations.
+ * @param {number} length The length of each combination.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} A new iterator containing
+ * combinations from the {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.combinations = function(iterable, length) {
+ var elements = goog.iter.toArray(iterable);
+ var indexes = goog.iter.range(elements.length);
+ var indexIterator = goog.iter.permutations(indexes, length);
+ // sortedIndexIterator will now give arrays of with the given length that
+ // indicate what indexes into "elements" should be returned on each iteration.
+ var sortedIndexIterator = goog.iter.filter(
+ indexIterator, function(arr) { return goog.array.isSorted(arr); });
+
+ var iter = new goog.iter.Iterator();
+
+ function getIndexFromElements(index) { return elements[index]; }
+
+ iter.next = function() {
+ return goog.array.map(sortedIndexIterator.next(), getIndexFromElements);
+ };
+
+ return iter;
+};
+
+
+/**
+ * Creates an iterator that returns combinations of elements from
+ * {@code iterable}, with repeated elements possible.
+ *
+ * Combinations are obtained by taking the Cartesian product of {@code length}
+ * iterables and filtering those whose elements appear in the order they are
+ * encountered in {@code iterable}. For example, the 2-length combinations of
+ * {@code [1,2,3]} are {@code [[1,1], [1,2], [1,3], [2,2], [2,3], [3,3]]}.
+ * @see https://goo.gl/C0yXe4
+ * @see https://goo.gl/djOCsk
+ * @param {!goog.iter.Iterator<VALUE>|!goog.iter.Iterable} iterable The
+ * iterable to combine.
+ * @param {number} length The length of each combination.
+ * @return {!goog.iter.Iterator<!Array<VALUE>>} A new iterator containing
+ * combinations from the {@code iterable}.
+ * @template VALUE
+ */
+goog.iter.combinationsWithReplacement = function(iterable, length) {
+ var elements = goog.iter.toArray(iterable);
+ var indexes = goog.array.range(elements.length);
+ var sets = goog.array.repeat(indexes, length);
+ var indexIterator = goog.iter.product.apply(undefined, sets);
+ // sortedIndexIterator will now give arrays of with the given length that
+ // indicate what indexes into "elements" should be returned on each iteration.
+ var sortedIndexIterator = goog.iter.filter(
+ indexIterator, function(arr) { return goog.array.isSorted(arr); });
+
+ var iter = new goog.iter.Iterator();
+
+ function getIndexFromElements(index) { return elements[index]; }
+
+ iter.next = function() {
+ return goog.array.map(
+ /** @type {!Array<number>} */
+ (sortedIndexIterator.next()), getIndexFromElements);
+ };
+
+ return iter;
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Datastructure: Hash Map.
+ *
+ * @author arv@google.com (Erik Arvidsson)
+ *
+ * This file contains an implementation of a Map structure. It implements a lot
+ * of the methods used in goog.structs so those functions work on hashes. This
+ * is best suited for complex key types. For simple keys such as numbers and
+ * strings consider using the lighter-weight utilities in goog.object.
+ */
+
+
+goog.provide('goog.structs.Map');
+
+goog.require('goog.iter.Iterator');
+goog.require('goog.iter.StopIteration');
+goog.require('goog.object');
+
+
+
+/**
+ * Class for Hash Map datastructure.
+ * @param {*=} opt_map Map or Object to initialize the map with.
+ * @param {...*} var_args If 2 or more arguments are present then they
+ * will be used as key-value pairs.
+ * @constructor
+ * @template K, V
+ */
+goog.structs.Map = function(opt_map, var_args) {
+
+ /**
+ * Underlying JS object used to implement the map.
+ * @private {!Object}
+ */
+ this.map_ = {};
+
+ /**
+ * An array of keys. This is necessary for two reasons:
+ * 1. Iterating the keys using for (var key in this.map_) allocates an
+ * object for every key in IE which is really bad for IE6 GC perf.
+ * 2. Without a side data structure, we would need to escape all the keys
+ * as that would be the only way we could tell during iteration if the
+ * key was an internal key or a property of the object.
+ *
+ * This array can contain deleted keys so it's necessary to check the map
+ * as well to see if the key is still in the map (this doesn't require a
+ * memory allocation in IE).
+ * @private {!Array<string>}
+ */
+ this.keys_ = [];
+
+ /**
+ * The number of key value pairs in the map.
+ * @private {number}
+ */
+ this.count_ = 0;
+
+ /**
+ * Version used to detect changes while iterating.
+ * @private {number}
+ */
+ this.version_ = 0;
+
+ var argLength = arguments.length;
+
+ if (argLength > 1) {
+ if (argLength % 2) {
+ throw Error('Uneven number of arguments');
+ }
+ for (var i = 0; i < argLength; i += 2) {
+ this.set(arguments[i], arguments[i + 1]);
+ }
+ } else if (opt_map) {
+ this.addAll(/** @type {Object} */ (opt_map));
+ }
+};
+
+
+/**
+ * @return {number} The number of key-value pairs in the map.
+ */
+goog.structs.Map.prototype.getCount = function() {
+ return this.count_;
+};
+
+
+/**
+ * Returns the values of the map.
+ * @return {!Array<V>} The values in the map.
+ */
+goog.structs.Map.prototype.getValues = function() {
+ this.cleanupKeysArray_();
+
+ var rv = [];
+ for (var i = 0; i < this.keys_.length; i++) {
+ var key = this.keys_[i];
+ rv.push(this.map_[key]);
+ }
+ return rv;
+};
+
+
+/**
+ * Returns the keys of the map.
+ * @return {!Array<string>} Array of string values.
+ */
+goog.structs.Map.prototype.getKeys = function() {
+ this.cleanupKeysArray_();
+ return /** @type {!Array<string>} */ (this.keys_.concat());
+};
+
+
+/**
+ * Whether the map contains the given key.
+ * @param {*} key The key to check for.
+ * @return {boolean} Whether the map contains the key.
+ */
+goog.structs.Map.prototype.containsKey = function(key) {
+ return goog.structs.Map.hasKey_(this.map_, key);
+};
+
+
+/**
+ * Whether the map contains the given value. This is O(n).
+ * @param {V} val The value to check for.
+ * @return {boolean} Whether the map contains the value.
+ */
+goog.structs.Map.prototype.containsValue = function(val) {
+ for (var i = 0; i < this.keys_.length; i++) {
+ var key = this.keys_[i];
+ if (goog.structs.Map.hasKey_(this.map_, key) && this.map_[key] == val) {
+ return true;
+ }
+ }
+ return false;
+};
+
+
+/**
+ * Whether this map is equal to the argument map.
+ * @param {goog.structs.Map} otherMap The map against which to test equality.
+ * @param {function(V, V): boolean=} opt_equalityFn Optional equality function
+ * to test equality of values. If not specified, this will test whether
+ * the values contained in each map are identical objects.
+ * @return {boolean} Whether the maps are equal.
+ */
+goog.structs.Map.prototype.equals = function(otherMap, opt_equalityFn) {
+ if (this === otherMap) {
+ return true;
+ }
+
+ if (this.count_ != otherMap.getCount()) {
+ return false;
+ }
+
+ var equalityFn = opt_equalityFn || goog.structs.Map.defaultEquals;
+
+ this.cleanupKeysArray_();
+ for (var key, i = 0; key = this.keys_[i]; i++) {
+ if (!equalityFn(this.get(key), otherMap.get(key))) {
+ return false;
+ }
+ }
+
+ return true;
+};
+
+
+/**
+ * Default equality test for values.
+ * @param {*} a The first value.
+ * @param {*} b The second value.
+ * @return {boolean} Whether a and b reference the same object.
+ */
+goog.structs.Map.defaultEquals = function(a, b) {
+ return a === b;
+};
+
+
+/**
+ * @return {boolean} Whether the map is empty.
+ */
+goog.structs.Map.prototype.isEmpty = function() {
+ return this.count_ == 0;
+};
+
+
+/**
+ * Removes all key-value pairs from the map.
+ */
+goog.structs.Map.prototype.clear = function() {
+ this.map_ = {};
+ this.keys_.length = 0;
+ this.count_ = 0;
+ this.version_ = 0;
+};
+
+
+/**
+ * Removes a key-value pair based on the key. This is O(logN) amortized due to
+ * updating the keys array whenever the count becomes half the size of the keys
+ * in the keys array.
+ * @param {*} key The key to remove.
+ * @return {boolean} Whether object was removed.
+ */
+goog.structs.Map.prototype.remove = function(key) {
+ if (goog.structs.Map.hasKey_(this.map_, key)) {
+ delete this.map_[key];
+ this.count_--;
+ this.version_++;
+
+ // clean up the keys array if the threshold is hit
+ if (this.keys_.length > 2 * this.count_) {
+ this.cleanupKeysArray_();
+ }
+
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * Cleans up the temp keys array by removing entries that are no longer in the
+ * map.
+ * @private
+ */
+goog.structs.Map.prototype.cleanupKeysArray_ = function() {
+ if (this.count_ != this.keys_.length) {
+ // First remove keys that are no longer in the map.
+ var srcIndex = 0;
+ var destIndex = 0;
+ while (srcIndex < this.keys_.length) {
+ var key = this.keys_[srcIndex];
+ if (goog.structs.Map.hasKey_(this.map_, key)) {
+ this.keys_[destIndex++] = key;
+ }
+ srcIndex++;
+ }
+ this.keys_.length = destIndex;
+ }
+
+ if (this.count_ != this.keys_.length) {
+ // If the count still isn't correct, that means we have duplicates. This can
+ // happen when the same key is added and removed multiple times. Now we have
+ // to allocate one extra Object to remove the duplicates. This could have
+ // been done in the first pass, but in the common case, we can avoid
+ // allocating an extra object by only doing this when necessary.
+ var seen = {};
+ var srcIndex = 0;
+ var destIndex = 0;
+ while (srcIndex < this.keys_.length) {
+ var key = this.keys_[srcIndex];
+ if (!(goog.structs.Map.hasKey_(seen, key))) {
+ this.keys_[destIndex++] = key;
+ seen[key] = 1;
+ }
+ srcIndex++;
+ }
+ this.keys_.length = destIndex;
+ }
+};
+
+
+/**
+ * Returns the value for the given key. If the key is not found and the default
+ * value is not given this will return {@code undefined}.
+ * @param {*} key The key to get the value for.
+ * @param {DEFAULT=} opt_val The value to return if no item is found for the
+ * given key, defaults to undefined.
+ * @return {V|DEFAULT} The value for the given key.
+ * @template DEFAULT
+ */
+goog.structs.Map.prototype.get = function(key, opt_val) {
+ if (goog.structs.Map.hasKey_(this.map_, key)) {
+ return this.map_[key];
+ }
+ return opt_val;
+};
+
+
+/**
+ * Adds a key-value pair to the map.
+ * @param {*} key The key.
+ * @param {V} value The value to add.
+ * @return {*} Some subclasses return a value.
+ */
+goog.structs.Map.prototype.set = function(key, value) {
+ if (!(goog.structs.Map.hasKey_(this.map_, key))) {
+ this.count_++;
+ // TODO(johnlenz): This class lies, it claims to return an array of string
+ // keys, but instead returns the original object used.
+ this.keys_.push(/** @type {?} */ (key));
+ // Only change the version if we add a new key.
+ this.version_++;
+ }
+ this.map_[key] = value;
+};
+
+
+/**
+ * Adds multiple key-value pairs from another goog.structs.Map or Object.
+ * @param {Object} map Object containing the data to add.
+ */
+goog.structs.Map.prototype.addAll = function(map) {
+ var keys, values;
+ if (map instanceof goog.structs.Map) {
+ keys = map.getKeys();
+ values = map.getValues();
+ } else {
+ keys = goog.object.getKeys(map);
+ values = goog.object.getValues(map);
+ }
+ // we could use goog.array.forEach here but I don't want to introduce that
+ // dependency just for this.
+ for (var i = 0; i < keys.length; i++) {
+ this.set(keys[i], values[i]);
+ }
+};
+
+
+/**
+ * Calls the given function on each entry in the map.
+ * @param {function(this:T, V, K, goog.structs.Map<K,V>)} f
+ * @param {T=} opt_obj The value of "this" inside f.
+ * @template T
+ */
+goog.structs.Map.prototype.forEach = function(f, opt_obj) {
+ var keys = this.getKeys();
+ for (var i = 0; i < keys.length; i++) {
+ var key = keys[i];
+ var value = this.get(key);
+ f.call(opt_obj, value, key, this);
+ }
+};
+
+
+/**
+ * Clones a map and returns a new map.
+ * @return {!goog.structs.Map} A new map with the same key-value pairs.
+ */
+goog.structs.Map.prototype.clone = function() {
+ return new goog.structs.Map(this);
+};
+
+
+/**
+ * Returns a new map in which all the keys and values are interchanged
+ * (keys become values and values become keys). If multiple keys map to the
+ * same value, the chosen transposed value is implementation-dependent.
+ *
+ * It acts very similarly to {goog.object.transpose(Object)}.
+ *
+ * @return {!goog.structs.Map} The transposed map.
+ */
+goog.structs.Map.prototype.transpose = function() {
+ var transposed = new goog.structs.Map();
+ for (var i = 0; i < this.keys_.length; i++) {
+ var key = this.keys_[i];
+ var value = this.map_[key];
+ transposed.set(value, key);
+ }
+
+ return transposed;
+};
+
+
+/**
+ * @return {!Object} Object representation of the map.
+ */
+goog.structs.Map.prototype.toObject = function() {
+ this.cleanupKeysArray_();
+ var obj = {};
+ for (var i = 0; i < this.keys_.length; i++) {
+ var key = this.keys_[i];
+ obj[key] = this.map_[key];
+ }
+ return obj;
+};
+
+
+/**
+ * Returns an iterator that iterates over the keys in the map. Removal of keys
+ * while iterating might have undesired side effects.
+ * @return {!goog.iter.Iterator} An iterator over the keys in the map.
+ */
+goog.structs.Map.prototype.getKeyIterator = function() {
+ return this.__iterator__(true);
+};
+
+
+/**
+ * Returns an iterator that iterates over the values in the map. Removal of
+ * keys while iterating might have undesired side effects.
+ * @return {!goog.iter.Iterator} An iterator over the values in the map.
+ */
+goog.structs.Map.prototype.getValueIterator = function() {
+ return this.__iterator__(false);
+};
+
+
+/**
+ * Returns an iterator that iterates over the values or the keys in the map.
+ * This throws an exception if the map was mutated since the iterator was
+ * created.
+ * @param {boolean=} opt_keys True to iterate over the keys. False to iterate
+ * over the values. The default value is false.
+ * @return {!goog.iter.Iterator} An iterator over the values or keys in the map.
+ */
+goog.structs.Map.prototype.__iterator__ = function(opt_keys) {
+ // Clean up keys to minimize the risk of iterating over dead keys.
+ this.cleanupKeysArray_();
+
+ var i = 0;
+ var version = this.version_;
+ var selfObj = this;
+
+ var newIter = new goog.iter.Iterator;
+ newIter.next = function() {
+ if (version != selfObj.version_) {
+ throw Error('The map has changed since the iterator was created');
+ }
+ if (i >= selfObj.keys_.length) {
+ throw goog.iter.StopIteration;
+ }
+ var key = selfObj.keys_[i++];
+ return opt_keys ? key : selfObj.map_[key];
+ };
+ return newIter;
+};
+
+
+/**
+ * Safe way to test for hasOwnProperty. It even allows testing for
+ * 'hasOwnProperty'.
+ * @param {Object} obj The object to test for presence of the given key.
+ * @param {*} key The key to check for.
+ * @return {boolean} Whether the object has the key.
+ * @private
+ */
+goog.structs.Map.hasKey_ = function(obj, key) {
+ return Object.prototype.hasOwnProperty.call(obj, key);
+};
+
+// Copyright 2008 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Simple utilities for dealing with URI strings.
+ *
+ * This is intended to be a lightweight alternative to constructing goog.Uri
+ * objects. Whereas goog.Uri adds several kilobytes to the binary regardless
+ * of how much of its functionality you use, this is designed to be a set of
+ * mostly-independent utilities so that the compiler includes only what is
+ * necessary for the task. Estimated savings of porting is 5k pre-gzip and
+ * 1.5k post-gzip. To ensure the savings remain, future developers should
+ * avoid adding new functionality to existing functions, but instead create
+ * new ones and factor out shared code.
+ *
+ * Many of these utilities have limited functionality, tailored to common
+ * cases. The query parameter utilities assume that the parameter keys are
+ * already encoded, since most keys are compile-time alphanumeric strings. The
+ * query parameter mutation utilities also do not tolerate fragment identifiers.
+ *
+ * By design, these functions can be slower than goog.Uri equivalents.
+ * Repeated calls to some of functions may be quadratic in behavior for IE,
+ * although the effect is somewhat limited given the 2kb limit.
+ *
+ * One advantage of the limited functionality here is that this approach is
+ * less sensitive to differences in URI encodings than goog.Uri, since these
+ * functions operate on strings directly, rather than decoding them and
+ * then re-encoding.
+ *
+ * Uses features of RFC 3986 for parsing/formatting URIs:
+ * http://www.ietf.org/rfc/rfc3986.txt
+ *
+ * @author gboyer@google.com (Garrett Boyer) - The "lightened" design.
+ */
+
+goog.provide('goog.uri.utils');
+goog.provide('goog.uri.utils.ComponentIndex');
+goog.provide('goog.uri.utils.QueryArray');
+goog.provide('goog.uri.utils.QueryValue');
+goog.provide('goog.uri.utils.StandardQueryParam');
+
+goog.require('goog.asserts');
+goog.require('goog.string');
+
+
+/**
+ * Character codes inlined to avoid object allocations due to charCode.
+ * @enum {number}
+ * @private
+ */
+goog.uri.utils.CharCode_ = {
+ AMPERSAND: 38,
+ EQUAL: 61,
+ HASH: 35,
+ QUESTION: 63
+};
+
+
+/**
+ * Builds a URI string from already-encoded parts.
+ *
+ * No encoding is performed. Any component may be omitted as either null or
+ * undefined.
+ *
+ * @param {?string=} opt_scheme The scheme such as 'http'.
+ * @param {?string=} opt_userInfo The user name before the '@'.
+ * @param {?string=} opt_domain The domain such as 'www.google.com', already
+ * URI-encoded.
+ * @param {(string|number|null)=} opt_port The port number.
+ * @param {?string=} opt_path The path, already URI-encoded. If it is not
+ * empty, it must begin with a slash.
+ * @param {?string=} opt_queryData The URI-encoded query data.
+ * @param {?string=} opt_fragment The URI-encoded fragment identifier.
+ * @return {string} The fully combined URI.
+ */
+goog.uri.utils.buildFromEncodedParts = function(
+ opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData,
+ opt_fragment) {
+ var out = '';
+
+ if (opt_scheme) {
+ out += opt_scheme + ':';
+ }
+
+ if (opt_domain) {
+ out += '//';
+
+ if (opt_userInfo) {
+ out += opt_userInfo + '@';
+ }
+
+ out += opt_domain;
+
+ if (opt_port) {
+ out += ':' + opt_port;
+ }
+ }
+
+ if (opt_path) {
+ out += opt_path;
+ }
+
+ if (opt_queryData) {
+ out += '?' + opt_queryData;
+ }
+
+ if (opt_fragment) {
+ out += '#' + opt_fragment;
+ }
+
+ return out;
+};
+
+
+/**
+ * A regular expression for breaking a URI into its component parts.
+ *
+ * {@link http://www.ietf.org/rfc/rfc3986.txt} says in Appendix B
+ * As the "first-match-wins" algorithm is identical to the "greedy"
+ * disambiguation method used by POSIX regular expressions, it is natural and
+ * commonplace to use a regular expression for parsing the potential five
+ * components of a URI reference.
+ *
+ * The following line is the regular expression for breaking-down a
+ * well-formed URI reference into its components.
+ *
+ * <pre>
+ * ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
+ * 12 3 4 5 6 7 8 9
+ * </pre>
+ *
+ * The numbers in the second line above are only to assist readability; they
+ * indicate the reference points for each subexpression (i.e., each paired
+ * parenthesis). We refer to the value matched for subexpression <n> as $<n>.
+ * For example, matching the above expression to
+ * <pre>
+ * http://www.ics.uci.edu/pub/ietf/uri/#Related
+ * </pre>
+ * results in the following subexpression matches:
+ * <pre>
+ * $1 = http:
+ * $2 = http
+ * $3 = //www.ics.uci.edu
+ * $4 = www.ics.uci.edu
+ * $5 = /pub/ietf/uri/
+ * $6 = <undefined>
+ * $7 = <undefined>
+ * $8 = #Related
+ * $9 = Related
+ * </pre>
+ * where <undefined> indicates that the component is not present, as is the
+ * case for the query component in the above example. Therefore, we can
+ * determine the value of the five components as
+ * <pre>
+ * scheme = $2
+ * authority = $4
+ * path = $5
+ * query = $7
+ * fragment = $9
+ * </pre>
+ *
+ * The regular expression has been modified slightly to expose the
+ * userInfo, domain, and port separately from the authority.
+ * The modified version yields
+ * <pre>
+ * $1 = http scheme
+ * $2 = <undefined> userInfo -\
+ * $3 = www.ics.uci.edu domain | authority
+ * $4 = <undefined> port -/
+ * $5 = /pub/ietf/uri/ path
+ * $6 = <undefined> query without ?
+ * $7 = Related fragment without #
+ * </pre>
+ * @type {!RegExp}
+ * @private
+ */
+goog.uri.utils.splitRe_ = new RegExp(
+ '^' +
+ '(?:' +
+ '([^:/?#.]+)' + // scheme - ignore special characters
+ // used by other URL parts such as :,
+ // ?, /, #, and .
+ ':)?' +
+ '(?://' +
+ '(?:([^/?#]*)@)?' + // userInfo
+ '([^/#?]*?)' + // domain
+ '(?::([0-9]+))?' + // port
+ '(?=[/#?]|$)' + // authority-terminating character
+ ')?' +
+ '([^?#]+)?' + // path
+ '(?:\\?([^#]*))?' + // query
+ '(?:#(.*))?' + // fragment
+ '$');
+
+
+/**
+ * The index of each URI component in the return value of goog.uri.utils.split.
+ * @enum {number}
+ */
+goog.uri.utils.ComponentIndex = {
+ SCHEME: 1,
+ USER_INFO: 2,
+ DOMAIN: 3,
+ PORT: 4,
+ PATH: 5,
+ QUERY_DATA: 6,
+ FRAGMENT: 7
+};
+
+
+/**
+ * Splits a URI into its component parts.
+ *
+ * Each component can be accessed via the component indices; for example:
+ * <pre>
+ * goog.uri.utils.split(someStr)[goog.uri.utils.CompontentIndex.QUERY_DATA];
+ * </pre>
+ *
+ * @param {string} uri The URI string to examine.
+ * @return {!Array<string|undefined>} Each component still URI-encoded.
+ * Each component that is present will contain the encoded value, whereas
+ * components that are not present will be undefined or empty, depending
+ * on the browser's regular expression implementation. Never null, since
+ * arbitrary strings may still look like path names.
+ */
+goog.uri.utils.split = function(uri) {
+ // See @return comment -- never null.
+ return /** @type {!Array<string|undefined>} */ (
+ uri.match(goog.uri.utils.splitRe_));
+};
+
+
+/**
+ * @param {?string} uri A possibly null string.
+ * @param {boolean=} opt_preserveReserved If true, percent-encoding of RFC-3986
+ * reserved characters will not be removed.
+ * @return {?string} The string URI-decoded, or null if uri is null.
+ * @private
+ */
+goog.uri.utils.decodeIfPossible_ = function(uri, opt_preserveReserved) {
+ if (!uri) {
+ return uri;
+ }
+
+ return opt_preserveReserved ? decodeURI(uri) : decodeURIComponent(uri);
+};
+
+
+/**
+ * Gets a URI component by index.
+ *
+ * It is preferred to use the getPathEncoded() variety of functions ahead,
+ * since they are more readable.
+ *
+ * @param {goog.uri.utils.ComponentIndex} componentIndex The component index.
+ * @param {string} uri The URI to examine.
+ * @return {?string} The still-encoded component, or null if the component
+ * is not present.
+ * @private
+ */
+goog.uri.utils.getComponentByIndex_ = function(componentIndex, uri) {
+ // Convert undefined, null, and empty string into null.
+ return goog.uri.utils.split(uri)[componentIndex] || null;
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The protocol or scheme, or null if none. Does not
+ * include trailing colons or slashes.
+ */
+goog.uri.utils.getScheme = function(uri) {
+ return goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.SCHEME, uri);
+};
+
+
+/**
+ * Gets the effective scheme for the URL. If the URL is relative then the
+ * scheme is derived from the page's location.
+ * @param {string} uri The URI to examine.
+ * @return {string} The protocol or scheme, always lower case.
+ */
+goog.uri.utils.getEffectiveScheme = function(uri) {
+ var scheme = goog.uri.utils.getScheme(uri);
+ if (!scheme && goog.global.self && goog.global.self.location) {
+ var protocol = goog.global.self.location.protocol;
+ scheme = protocol.substr(0, protocol.length - 1);
+ }
+ // NOTE: When called from a web worker in Firefox 3.5, location maybe null.
+ // All other browsers with web workers support self.location from the worker.
+ return scheme ? scheme.toLowerCase() : '';
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The user name still encoded, or null if none.
+ */
+goog.uri.utils.getUserInfoEncoded = function(uri) {
+ return goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.USER_INFO, uri);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The decoded user info, or null if none.
+ */
+goog.uri.utils.getUserInfo = function(uri) {
+ return goog.uri.utils.decodeIfPossible_(
+ goog.uri.utils.getUserInfoEncoded(uri));
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The domain name still encoded, or null if none.
+ */
+goog.uri.utils.getDomainEncoded = function(uri) {
+ return goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.DOMAIN, uri);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The decoded domain, or null if none.
+ */
+goog.uri.utils.getDomain = function(uri) {
+ return goog.uri.utils.decodeIfPossible_(
+ goog.uri.utils.getDomainEncoded(uri), true /* opt_preserveReserved */);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?number} The port number, or null if none.
+ */
+goog.uri.utils.getPort = function(uri) {
+ // Coerce to a number. If the result of getComponentByIndex_ is null or
+ // non-numeric, the number coersion yields NaN. This will then return
+ // null for all non-numeric cases (though also zero, which isn't a relevant
+ // port number).
+ return Number(
+ goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.PORT, uri)) ||
+ null;
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The path still encoded, or null if none. Includes the
+ * leading slash, if any.
+ */
+goog.uri.utils.getPathEncoded = function(uri) {
+ return goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.PATH, uri);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The decoded path, or null if none. Includes the leading
+ * slash, if any.
+ */
+goog.uri.utils.getPath = function(uri) {
+ return goog.uri.utils.decodeIfPossible_(
+ goog.uri.utils.getPathEncoded(uri), true /* opt_preserveReserved */);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The query data still encoded, or null if none. Does not
+ * include the question mark itself.
+ */
+goog.uri.utils.getQueryData = function(uri) {
+ return goog.uri.utils.getComponentByIndex_(
+ goog.uri.utils.ComponentIndex.QUERY_DATA, uri);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The fragment identifier, or null if none. Does not
+ * include the hash mark itself.
+ */
+goog.uri.utils.getFragmentEncoded = function(uri) {
+ // The hash mark may not appear in any other part of the URL.
+ var hashIndex = uri.indexOf('#');
+ return hashIndex < 0 ? null : uri.substr(hashIndex + 1);
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @param {?string} fragment The encoded fragment identifier, or null if none.
+ * Does not include the hash mark itself.
+ * @return {string} The URI with the fragment set.
+ */
+goog.uri.utils.setFragmentEncoded = function(uri, fragment) {
+ return goog.uri.utils.removeFragment(uri) + (fragment ? '#' + fragment : '');
+};
+
+
+/**
+ * @param {string} uri The URI to examine.
+ * @return {?string} The decoded fragment identifier, or null if none. Does
+ * not include the hash mark.
+ */
+goog.uri.utils.getFragment = function(uri) {
+ return goog.uri.utils.decodeIfPossible_(
+ goog.uri.utils.getFragmentEncoded(uri));
+};
+
+
+/**
+ * Extracts everything up to the port of the URI.
+ * @param {string} uri The URI string.
+ * @return {string} Everything up to and including the port.
+ */
+goog.uri.utils.getHost = function(uri) {
+ var pieces = goog.uri.utils.split(uri);
+ return goog.uri.utils.buildFromEncodedParts(
+ pieces[goog.uri.utils.ComponentIndex.SCHEME],
+ pieces[goog.uri.utils.ComponentIndex.USER_INFO],
+ pieces[goog.uri.utils.ComponentIndex.DOMAIN],
+ pieces[goog.uri.utils.ComponentIndex.PORT]);
+};
+
+
+/**
+ * Extracts the path of the URL and everything after.
+ * @param {string} uri The URI string.
+ * @return {string} The URI, starting at the path and including the query
+ * parameters and fragment identifier.
+ */
+goog.uri.utils.getPathAndAfter = function(uri) {
+ var pieces = goog.uri.utils.split(uri);
+ return goog.uri.utils.buildFromEncodedParts(
+ null, null, null, null, pieces[goog.uri.utils.ComponentIndex.PATH],
+ pieces[goog.uri.utils.ComponentIndex.QUERY_DATA],
+ pieces[goog.uri.utils.ComponentIndex.FRAGMENT]);
+};
+
+
+/**
+ * Gets the URI with the fragment identifier removed.
+ * @param {string} uri The URI to examine.
+ * @return {string} Everything preceding the hash mark.
+ */
+goog.uri.utils.removeFragment = function(uri) {
+ // The hash mark may not appear in any other part of the URL.
+ var hashIndex = uri.indexOf('#');
+ return hashIndex < 0 ? uri : uri.substr(0, hashIndex);
+};
+
+
+/**
+ * Ensures that two URI's have the exact same domain, scheme, and port.
+ *
+ * Unlike the version in goog.Uri, this checks protocol, and therefore is
+ * suitable for checking against the browser's same-origin policy.
+ *
+ * @param {string} uri1 The first URI.
+ * @param {string} uri2 The second URI.
+ * @return {boolean} Whether they have the same scheme, domain and port.
+ */
+goog.uri.utils.haveSameDomain = function(uri1, uri2) {
+ var pieces1 = goog.uri.utils.split(uri1);
+ var pieces2 = goog.uri.utils.split(uri2);
+ return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==
+ pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&
+ pieces1[goog.uri.utils.ComponentIndex.SCHEME] ==
+ pieces2[goog.uri.utils.ComponentIndex.SCHEME] &&
+ pieces1[goog.uri.utils.ComponentIndex.PORT] ==
+ pieces2[goog.uri.utils.ComponentIndex.PORT];
+};
+
+
+/**
+ * Asserts that there are no fragment or query identifiers, only in uncompiled
+ * mode.
+ * @param {string} uri The URI to examine.
+ * @private
+ */
+goog.uri.utils.assertNoFragmentsOrQueries_ = function(uri) {
+ // NOTE: would use goog.asserts here, but jscompiler doesn't know that
+ // indexOf has no side effects.
+ if (goog.DEBUG && (uri.indexOf('#') >= 0 || uri.indexOf('?') >= 0)) {
+ throw Error(
+ 'goog.uri.utils: Fragment or query identifiers are not ' +
+ 'supported: [' + uri + ']');
+ }
+};
+
+
+/**
+ * Supported query parameter values by the parameter serializing utilities.
+ *
+ * If a value is null or undefined, the key-value pair is skipped, as an easy
+ * way to omit parameters conditionally. Non-array parameters are converted
+ * to a string and URI encoded. Array values are expanded into multiple
+ * &key=value pairs, with each element stringized and URI-encoded.
+ *
+ * @typedef {*}
+ */
+goog.uri.utils.QueryValue;
+
+
+/**
+ * An array representing a set of query parameters with alternating keys
+ * and values.
+ *
+ * Keys are assumed to be URI encoded already and live at even indices. See
+ * goog.uri.utils.QueryValue for details on how parameter values are encoded.
+ *
+ * Example:
+ * <pre>
+ * var data = [
+ * // Simple param: ?name=BobBarker
+ * 'name', 'BobBarker',
+ * // Conditional param -- may be omitted entirely.
+ * 'specialDietaryNeeds', hasDietaryNeeds() ? getDietaryNeeds() : null,
+ * // Multi-valued param: &house=LosAngeles&house=NewYork&house=null
+ * 'house', ['LosAngeles', 'NewYork', null]
+ * ];
+ * </pre>
+ *
+ * @typedef {!Array<string|goog.uri.utils.QueryValue>}
+ */
+goog.uri.utils.QueryArray;
+
+
+/**
+ * Parses encoded query parameters and calls callback function for every
+ * parameter found in the string.
+ *
+ * Missing value of parameter (e.g. “…&key&…”) is treated as if the value was an
+ * empty string. Keys may be empty strings (e.g. “…&=value&…”) which also means
+ * that “…&=&…” and “…&&…” will result in an empty key and value.
+ *
+ * @param {string} encodedQuery Encoded query string excluding question mark at
+ * the beginning.
+ * @param {function(string, string)} callback Function called for every
+ * parameter found in query string. The first argument (name) will not be
+ * urldecoded (so the function is consistent with buildQueryData), but the
+ * second will. If the parameter has no value (i.e. “=” was not present)
+ * the second argument (value) will be an empty string.
+ */
+goog.uri.utils.parseQueryData = function(encodedQuery, callback) {
+ if (!encodedQuery) {
+ return;
+ }
+ var pairs = encodedQuery.split('&');
+ for (var i = 0; i < pairs.length; i++) {
+ var indexOfEquals = pairs[i].indexOf('=');
+ var name = null;
+ var value = null;
+ if (indexOfEquals >= 0) {
+ name = pairs[i].substring(0, indexOfEquals);
+ value = pairs[i].substring(indexOfEquals + 1);
+ } else {
+ name = pairs[i];
+ }
+ callback(name, value ? goog.string.urlDecode(value) : '');
+ }
+};
+
+
+/**
+ * Appends a URI and query data in a string buffer with special preconditions.
+ *
+ * Internal implementation utility, performing very few object allocations.
+ *
+ * @param {!Array<string|undefined>} buffer A string buffer. The first element
+ * must be the base URI, and may have a fragment identifier. If the array
+ * contains more than one element, the second element must be an ampersand,
+ * and may be overwritten, depending on the base URI. Undefined elements
+ * are treated as empty-string.
+ * @return {string} The concatenated URI and query data.
+ * @private
+ */
+goog.uri.utils.appendQueryData_ = function(buffer) {
+ if (buffer[1]) {
+ // At least one query parameter was added. We need to check the
+ // punctuation mark, which is currently an ampersand, and also make sure
+ // there aren't any interfering fragment identifiers.
+ var baseUri = /** @type {string} */ (buffer[0]);
+ var hashIndex = baseUri.indexOf('#');
+ if (hashIndex >= 0) {
+ // Move the fragment off the base part of the URI into the end.
+ buffer.push(baseUri.substr(hashIndex));
+ buffer[0] = baseUri = baseUri.substr(0, hashIndex);
+ }
+ var questionIndex = baseUri.indexOf('?');
+ if (questionIndex < 0) {
+ // No question mark, so we need a question mark instead of an ampersand.
+ buffer[1] = '?';
+ } else if (questionIndex == baseUri.length - 1) {
+ // Question mark is the very last character of the existing URI, so don't
+ // append an additional delimiter.
+ buffer[1] = undefined;
+ }
+ }
+
+ return buffer.join('');
+};
+
+
+/**
+ * Appends key=value pairs to an array, supporting multi-valued objects.
+ * @param {string} key The key prefix.
+ * @param {goog.uri.utils.QueryValue} value The value to serialize.
+ * @param {!Array<string>} pairs The array to which the 'key=value' strings
+ * should be appended.
+ * @private
+ */
+goog.uri.utils.appendKeyValuePairs_ = function(key, value, pairs) {
+ if (goog.isArray(value)) {
+ // Convince the compiler it's an array.
+ goog.asserts.assertArray(value);
+ for (var j = 0; j < value.length; j++) {
+ // Convert to string explicitly, to short circuit the null and array
+ // logic in this function -- this ensures that null and undefined get
+ // written as literal 'null' and 'undefined', and arrays don't get
+ // expanded out but instead encoded in the default way.
+ goog.uri.utils.appendKeyValuePairs_(key, String(value[j]), pairs);
+ }
+ } else if (value != null) {
+ // Skip a top-level null or undefined entirely.
+ pairs.push(
+ '&', key,
+ // Check for empty string. Zero gets encoded into the url as literal
+ // strings. For empty string, skip the equal sign, to be consistent
+ // with UriBuilder.java.
+ value === '' ? '' : '=', goog.string.urlEncode(value));
+ }
+};
+
+
+/**
+ * Builds a buffer of query data from a sequence of alternating keys and values.
+ *
+ * @param {!Array<string|undefined>} buffer A string buffer to append to. The
+ * first element appended will be an '&', and may be replaced by the caller.
+ * @param {!goog.uri.utils.QueryArray|!Arguments} keysAndValues An array with
+ * alternating keys and values -- see the typedef.
+ * @param {number=} opt_startIndex A start offset into the arary, defaults to 0.
+ * @return {!Array<string|undefined>} The buffer argument.
+ * @private
+ */
+goog.uri.utils.buildQueryDataBuffer_ = function(
+ buffer, keysAndValues, opt_startIndex) {
+ goog.asserts.assert(
+ Math.max(keysAndValues.length - (opt_startIndex || 0), 0) % 2 == 0,
+ 'goog.uri.utils: Key/value lists must be even in length.');
+
+ for (var i = opt_startIndex || 0; i < keysAndValues.length; i += 2) {
+ goog.uri.utils.appendKeyValuePairs_(
+ keysAndValues[i], keysAndValues[i + 1], buffer);
+ }
+
+ return buffer;
+};
+
+
+/**
+ * Builds a query data string from a sequence of alternating keys and values.
+ * Currently generates "&key&" for empty args.
+ *
+ * @param {goog.uri.utils.QueryArray} keysAndValues Alternating keys and
+ * values. See the typedef.
+ * @param {number=} opt_startIndex A start offset into the arary, defaults to 0.
+ * @return {string} The encoded query string, in the form 'a=1&b=2'.
+ */
+goog.uri.utils.buildQueryData = function(keysAndValues, opt_startIndex) {
+ var buffer =
+ goog.uri.utils.buildQueryDataBuffer_([], keysAndValues, opt_startIndex);
+ buffer[0] = ''; // Remove the leading ampersand.
+ return buffer.join('');
+};
+
+
+/**
+ * Builds a buffer of query data from a map.
+ *
+ * @param {!Array<string|undefined>} buffer A string buffer to append to. The
+ * first element appended will be an '&', and may be replaced by the caller.
+ * @param {!Object<string, goog.uri.utils.QueryValue>} map An object where keys
+ * are URI-encoded parameter keys, and the values conform to the contract
+ * specified in the goog.uri.utils.QueryValue typedef.
+ * @return {!Array<string|undefined>} The buffer argument.
+ * @private
+ */
+goog.uri.utils.buildQueryDataBufferFromMap_ = function(buffer, map) {
+ for (var key in map) {
+ goog.uri.utils.appendKeyValuePairs_(key, map[key], buffer);
+ }
+
+ return buffer;
+};
+
+
+/**
+ * Builds a query data string from a map.
+ * Currently generates "&key&" for empty args.
+ *
+ * @param {!Object<string, goog.uri.utils.QueryValue>} map An object where keys
+ * are URI-encoded parameter keys, and the values are arbitrary types
+ * or arrays. Keys with a null value are dropped.
+ * @return {string} The encoded query string, in the form 'a=1&b=2'.
+ */
+goog.uri.utils.buildQueryDataFromMap = function(map) {
+ var buffer = goog.uri.utils.buildQueryDataBufferFromMap_([], map);
+ buffer[0] = '';
+ return buffer.join('');
+};
+
+
+/**
+ * Appends URI parameters to an existing URI.
+ *
+ * The variable arguments may contain alternating keys and values. Keys are
+ * assumed to be already URI encoded. The values should not be URI-encoded,
+ * and will instead be encoded by this function.
+ * <pre>
+ * appendParams('http://www.foo.com?existing=true',
+ * 'key1', 'value1',
+ * 'key2', 'value?willBeEncoded',
+ * 'key3', ['valueA', 'valueB', 'valueC'],
+ * 'key4', null);
+ * result: 'http://www.foo.com?existing=true&' +
+ * 'key1=value1&' +
+ * 'key2=value%3FwillBeEncoded&' +
+ * 'key3=valueA&key3=valueB&key3=valueC'
+ * </pre>
+ *
+ * A single call to this function will not exhibit quadratic behavior in IE,
+ * whereas multiple repeated calls may, although the effect is limited by
+ * fact that URL's generally can't exceed 2kb.
+ *
+ * @param {string} uri The original URI, which may already have query data.
+ * @param {...(goog.uri.utils.QueryArray|string|goog.uri.utils.QueryValue)}
+ * var_args
+ * An array or argument list conforming to goog.uri.utils.QueryArray.
+ * @return {string} The URI with all query parameters added.
+ */
+goog.uri.utils.appendParams = function(uri, var_args) {
+ return goog.uri.utils.appendQueryData_(
+ arguments.length == 2 ?
+ goog.uri.utils.buildQueryDataBuffer_([uri], arguments[1], 0) :
+ goog.uri.utils.buildQueryDataBuffer_([uri], arguments, 1));
+};
+
+
+/**
+ * Appends query parameters from a map.
+ *
+ * @param {string} uri The original URI, which may already have query data.
+ * @param {!Object<goog.uri.utils.QueryValue>} map An object where keys are
+ * URI-encoded parameter keys, and the values are arbitrary types or arrays.
+ * Keys with a null value are dropped.
+ * @return {string} The new parameters.
+ */
+goog.uri.utils.appendParamsFromMap = function(uri, map) {
+ return goog.uri.utils.appendQueryData_(
+ goog.uri.utils.buildQueryDataBufferFromMap_([uri], map));
+};
+
+
+/**
+ * Appends a single URI parameter.
+ *
+ * Repeated calls to this can exhibit quadratic behavior in IE6 due to the
+ * way string append works, though it should be limited given the 2kb limit.
+ *
+ * @param {string} uri The original URI, which may already have query data.
+ * @param {string} key The key, which must already be URI encoded.
+ * @param {*=} opt_value The value, which will be stringized and encoded
+ * (assumed not already to be encoded). If omitted, undefined, or null, the
+ * key will be added as a valueless parameter.
+ * @return {string} The URI with the query parameter added.
+ */
+goog.uri.utils.appendParam = function(uri, key, opt_value) {
+ var paramArr = [uri, '&', key];
+ if (goog.isDefAndNotNull(opt_value)) {
+ paramArr.push('=', goog.string.urlEncode(opt_value));
+ }
+ return goog.uri.utils.appendQueryData_(paramArr);
+};
+
+
+/**
+ * Finds the next instance of a query parameter with the specified name.
+ *
+ * Does not instantiate any objects.
+ *
+ * @param {string} uri The URI to search. May contain a fragment identifier
+ * if opt_hashIndex is specified.
+ * @param {number} startIndex The index to begin searching for the key at. A
+ * match may be found even if this is one character after the ampersand.
+ * @param {string} keyEncoded The URI-encoded key.
+ * @param {number} hashOrEndIndex Index to stop looking at. If a hash
+ * mark is present, it should be its index, otherwise it should be the
+ * length of the string.
+ * @return {number} The position of the first character in the key's name,
+ * immediately after either a question mark or a dot.
+ * @private
+ */
+goog.uri.utils.findParam_ = function(
+ uri, startIndex, keyEncoded, hashOrEndIndex) {
+ var index = startIndex;
+ var keyLength = keyEncoded.length;
+
+ // Search for the key itself and post-filter for surronuding punctuation,
+ // rather than expensively building a regexp.
+ while ((index = uri.indexOf(keyEncoded, index)) >= 0 &&
+ index < hashOrEndIndex) {
+ var precedingChar = uri.charCodeAt(index - 1);
+ // Ensure that the preceding character is '&' or '?'.
+ if (precedingChar == goog.uri.utils.CharCode_.AMPERSAND ||
+ precedingChar == goog.uri.utils.CharCode_.QUESTION) {
+ // Ensure the following character is '&', '=', '#', or NaN
+ // (end of string).
+ var followingChar = uri.charCodeAt(index + keyLength);
+ if (!followingChar || followingChar == goog.uri.utils.CharCode_.EQUAL ||
+ followingChar == goog.uri.utils.CharCode_.AMPERSAND ||
+ followingChar == goog.uri.utils.CharCode_.HASH) {
+ return index;
+ }
+ }
+ index += keyLength + 1;
+ }
+
+ return -1;
+};
+
+
+/**
+ * Regular expression for finding a hash mark or end of string.
+ * @type {RegExp}
+ * @private
+ */
+goog.uri.utils.hashOrEndRe_ = /#|$/;
+
+
+/**
+ * Determines if the URI contains a specific key.
+ *
+ * Performs no object instantiations.
+ *
+ * @param {string} uri The URI to process. May contain a fragment
+ * identifier.
+ * @param {string} keyEncoded The URI-encoded key. Case-sensitive.
+ * @return {boolean} Whether the key is present.
+ */
+goog.uri.utils.hasParam = function(uri, keyEncoded) {
+ return goog.uri.utils.findParam_(
+ uri, 0, keyEncoded, uri.search(goog.uri.utils.hashOrEndRe_)) >= 0;
+};
+
+
+/**
+ * Gets the first value of a query parameter.
+ * @param {string} uri The URI to process. May contain a fragment.
+ * @param {string} keyEncoded The URI-encoded key. Case-sensitive.
+ * @return {?string} The first value of the parameter (URI-decoded), or null
+ * if the parameter is not found.
+ */
+goog.uri.utils.getParamValue = function(uri, keyEncoded) {
+ var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);
+ var foundIndex =
+ goog.uri.utils.findParam_(uri, 0, keyEncoded, hashOrEndIndex);
+
+ if (foundIndex < 0) {
+ return null;
+ } else {
+ var endPosition = uri.indexOf('&', foundIndex);
+ if (endPosition < 0 || endPosition > hashOrEndIndex) {
+ endPosition = hashOrEndIndex;
+ }
+ // Progress forth to the end of the "key=" or "key&" substring.
+ foundIndex += keyEncoded.length + 1;
+ // Use substr, because it (unlike substring) will return empty string
+ // if foundIndex > endPosition.
+ return goog.string.urlDecode(
+ uri.substr(foundIndex, endPosition - foundIndex));
+ }
+};
+
+
+/**
+ * Gets all values of a query parameter.
+ * @param {string} uri The URI to process. May contain a fragment.
+ * @param {string} keyEncoded The URI-encoded key. Case-sensitive.
+ * @return {!Array<string>} All URI-decoded values with the given key.
+ * If the key is not found, this will have length 0, but never be null.
+ */
+goog.uri.utils.getParamValues = function(uri, keyEncoded) {
+ var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);
+ var position = 0;
+ var foundIndex;
+ var result = [];
+
+ while ((foundIndex = goog.uri.utils.findParam_(
+ uri, position, keyEncoded, hashOrEndIndex)) >= 0) {
+ // Find where this parameter ends, either the '&' or the end of the
+ // query parameters.
+ position = uri.indexOf('&', foundIndex);
+ if (position < 0 || position > hashOrEndIndex) {
+ position = hashOrEndIndex;
+ }
+
+ // Progress forth to the end of the "key=" or "key&" substring.
+ foundIndex += keyEncoded.length + 1;
+ // Use substr, because it (unlike substring) will return empty string
+ // if foundIndex > position.
+ result.push(
+ goog.string.urlDecode(uri.substr(foundIndex, position - foundIndex)));
+ }
+
+ return result;
+};
+
+
+/**
+ * Regexp to find trailing question marks and ampersands.
+ * @type {RegExp}
+ * @private
+ */
+goog.uri.utils.trailingQueryPunctuationRe_ = /[?&]($|#)/;
+
+
+/**
+ * Removes all instances of a query parameter.
+ * @param {string} uri The URI to process. Must not contain a fragment.
+ * @param {string} keyEncoded The URI-encoded key.
+ * @return {string} The URI with all instances of the parameter removed.
+ */
+goog.uri.utils.removeParam = function(uri, keyEncoded) {
+ var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);
+ var position = 0;
+ var foundIndex;
+ var buffer = [];
+
+ // Look for a query parameter.
+ while ((foundIndex = goog.uri.utils.findParam_(
+ uri, position, keyEncoded, hashOrEndIndex)) >= 0) {
+ // Get the portion of the query string up to, but not including, the ?
+ // or & starting the parameter.
+ buffer.push(uri.substring(position, foundIndex));
+ // Progress to immediately after the '&'. If not found, go to the end.
+ // Avoid including the hash mark.
+ position = Math.min(
+ (uri.indexOf('&', foundIndex) + 1) || hashOrEndIndex, hashOrEndIndex);
+ }
+
+ // Append everything that is remaining.
+ buffer.push(uri.substr(position));
+
+ // Join the buffer, and remove trailing punctuation that remains.
+ return buffer.join('').replace(
+ goog.uri.utils.trailingQueryPunctuationRe_, '$1');
+};
+
+
+/**
+ * Replaces all existing definitions of a parameter with a single definition.
+ *
+ * Repeated calls to this can exhibit quadratic behavior due to the need to
+ * find existing instances and reconstruct the string, though it should be
+ * limited given the 2kb limit. Consider using appendParams to append multiple
+ * parameters in bulk.
+ *
+ * @param {string} uri The original URI, which may already have query data.
+ * @param {string} keyEncoded The key, which must already be URI encoded.
+ * @param {*} value The value, which will be stringized and encoded (assumed
+ * not already to be encoded).
+ * @return {string} The URI with the query parameter added.
+ */
+goog.uri.utils.setParam = function(uri, keyEncoded, value) {
+ return goog.uri.utils.appendParam(
+ goog.uri.utils.removeParam(uri, keyEncoded), keyEncoded, value);
+};
+
+
+/**
+ * Generates a URI path using a given URI and a path with checks to
+ * prevent consecutive "//". The baseUri passed in must not contain
+ * query or fragment identifiers. The path to append may not contain query or
+ * fragment identifiers.
+ *
+ * @param {string} baseUri URI to use as the base.
+ * @param {string} path Path to append.
+ * @return {string} Updated URI.
+ */
+goog.uri.utils.appendPath = function(baseUri, path) {
+ goog.uri.utils.assertNoFragmentsOrQueries_(baseUri);
+
+ // Remove any trailing '/'
+ if (goog.string.endsWith(baseUri, '/')) {
+ baseUri = baseUri.substr(0, baseUri.length - 1);
+ }
+ // Remove any leading '/'
+ if (goog.string.startsWith(path, '/')) {
+ path = path.substr(1);
+ }
+ return goog.string.buildString(baseUri, '/', path);
+};
+
+
+/**
+ * Replaces the path.
+ * @param {string} uri URI to use as the base.
+ * @param {string} path New path.
+ * @return {string} Updated URI.
+ */
+goog.uri.utils.setPath = function(uri, path) {
+ // Add any missing '/'.
+ if (!goog.string.startsWith(path, '/')) {
+ path = '/' + path;
+ }
+ var parts = goog.uri.utils.split(uri);
+ return goog.uri.utils.buildFromEncodedParts(
+ parts[goog.uri.utils.ComponentIndex.SCHEME],
+ parts[goog.uri.utils.ComponentIndex.USER_INFO],
+ parts[goog.uri.utils.ComponentIndex.DOMAIN],
+ parts[goog.uri.utils.ComponentIndex.PORT], path,
+ parts[goog.uri.utils.ComponentIndex.QUERY_DATA],
+ parts[goog.uri.utils.ComponentIndex.FRAGMENT]);
+};
+
+
+/**
+ * Standard supported query parameters.
+ * @enum {string}
+ */
+goog.uri.utils.StandardQueryParam = {
+
+ /** Unused parameter for unique-ifying. */
+ RANDOM: 'zx'
+};
+
+
+/**
+ * Sets the zx parameter of a URI to a random value.
+ * @param {string} uri Any URI.
+ * @return {string} That URI with the "zx" parameter added or replaced to
+ * contain a random string.
+ */
+goog.uri.utils.makeUnique = function(uri) {
+ return goog.uri.utils.setParam(
+ uri, goog.uri.utils.StandardQueryParam.RANDOM,
+ goog.string.getRandomString());
+};
+
+// Copyright 2006 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Class for parsing and formatting URIs.
+ *
+ * Use goog.Uri(string) to parse a URI string. Use goog.Uri.create(...) to
+ * create a new instance of the goog.Uri object from Uri parts.
+ *
+ * e.g: <code>var myUri = new goog.Uri(window.location);</code>
+ *
+ * Implements RFC 3986 for parsing/formatting URIs.
+ * http://www.ietf.org/rfc/rfc3986.txt
+ *
+ * Some changes have been made to the interface (more like .NETs), though the
+ * internal representation is now of un-encoded parts, this will change the
+ * behavior slightly.
+ *
+ */
+
+goog.provide('goog.Uri');
+goog.provide('goog.Uri.QueryData');
+
+goog.require('goog.array');
+goog.require('goog.asserts');
+goog.require('goog.string');
+goog.require('goog.structs');
+goog.require('goog.structs.Map');
+goog.require('goog.uri.utils');
+goog.require('goog.uri.utils.ComponentIndex');
+goog.require('goog.uri.utils.StandardQueryParam');
+
+
+
+/**
+ * This class contains setters and getters for the parts of the URI.
+ * The <code>getXyz</code>/<code>setXyz</code> methods return the decoded part
+ * -- so<code>goog.Uri.parse('/foo%20bar').getPath()</code> will return the
+ * decoded path, <code>/foo bar</code>.
+ *
+ * Reserved characters (see RFC 3986 section 2.2) can be present in
+ * their percent-encoded form in scheme, domain, and path URI components and
+ * will not be auto-decoded. For example:
+ * <code>goog.Uri.parse('rel%61tive/path%2fto/resource').getPath()</code> will
+ * return <code>relative/path%2fto/resource</code>.
+ *
+ * The constructor accepts an optional unparsed, raw URI string. The parser
+ * is relaxed, so special characters that aren't escaped but don't cause
+ * ambiguities will not cause parse failures.
+ *
+ * All setters return <code>this</code> and so may be chained, a la
+ * <code>goog.Uri.parse('/foo').setFragment('part').toString()</code>.
+ *
+ * @param {*=} opt_uri Optional string URI to parse
+ * (use goog.Uri.create() to create a URI from parts), or if
+ * a goog.Uri is passed, a clone is created.
+ * @param {boolean=} opt_ignoreCase If true, #getParameterValue will ignore
+ * the case of the parameter name.
+ *
+ * @throws URIError If opt_uri is provided and URI is malformed (that is,
+ * if decodeURIComponent fails on any of the URI components).
+ * @constructor
+ * @struct
+ */
+goog.Uri = function(opt_uri, opt_ignoreCase) {
+ /**
+ * Scheme such as "http".
+ * @private {string}
+ */
+ this.scheme_ = '';
+
+ /**
+ * User credentials in the form "username:password".
+ * @private {string}
+ */
+ this.userInfo_ = '';
+
+ /**
+ * Domain part, e.g. "www.google.com".
+ * @private {string}
+ */
+ this.domain_ = '';
+
+ /**
+ * Port, e.g. 8080.
+ * @private {?number}
+ */
+ this.port_ = null;
+
+ /**
+ * Path, e.g. "/tests/img.png".
+ * @private {string}
+ */
+ this.path_ = '';
+
+ /**
+ * The fragment without the #.
+ * @private {string}
+ */
+ this.fragment_ = '';
+
+ /**
+ * Whether or not this Uri should be treated as Read Only.
+ * @private {boolean}
+ */
+ this.isReadOnly_ = false;
+
+ /**
+ * Whether or not to ignore case when comparing query params.
+ * @private {boolean}
+ */
+ this.ignoreCase_ = false;
+
+ /**
+ * Object representing query data.
+ * @private {!goog.Uri.QueryData}
+ */
+ this.queryData_;
+
+ // Parse in the uri string
+ var m;
+ if (opt_uri instanceof goog.Uri) {
+ this.ignoreCase_ =
+ goog.isDef(opt_ignoreCase) ? opt_ignoreCase : opt_uri.getIgnoreCase();
+ this.setScheme(opt_uri.getScheme());
+ this.setUserInfo(opt_uri.getUserInfo());
+ this.setDomain(opt_uri.getDomain());
+ this.setPort(opt_uri.getPort());
+ this.setPath(opt_uri.getPath());
+ this.setQueryData(opt_uri.getQueryData().clone());
+ this.setFragment(opt_uri.getFragment());
+ } else if (opt_uri && (m = goog.uri.utils.split(String(opt_uri)))) {
+ this.ignoreCase_ = !!opt_ignoreCase;
+
+ // Set the parts -- decoding as we do so.
+ // COMPATIBILITY NOTE - In IE, unmatched fields may be empty strings,
+ // whereas in other browsers they will be undefined.
+ this.setScheme(m[goog.uri.utils.ComponentIndex.SCHEME] || '', true);
+ this.setUserInfo(m[goog.uri.utils.ComponentIndex.USER_INFO] || '', true);
+ this.setDomain(m[goog.uri.utils.ComponentIndex.DOMAIN] || '', true);
+ this.setPort(m[goog.uri.utils.ComponentIndex.PORT]);
+ this.setPath(m[goog.uri.utils.ComponentIndex.PATH] || '', true);
+ this.setQueryData(m[goog.uri.utils.ComponentIndex.QUERY_DATA] || '', true);
+ this.setFragment(m[goog.uri.utils.ComponentIndex.FRAGMENT] || '', true);
+
+ } else {
+ this.ignoreCase_ = !!opt_ignoreCase;
+ this.queryData_ = new goog.Uri.QueryData(null, null, this.ignoreCase_);
+ }
+};
+
+
+/**
+ * If true, we preserve the type of query parameters set programmatically.
+ *
+ * This means that if you set a parameter to a boolean, and then call
+ * getParameterValue, you will get a boolean back.
+ *
+ * If false, we will coerce parameters to strings, just as they would
+ * appear in real URIs.
+ *
+ * TODO(nicksantos): Remove this once people have time to fix all tests.
+ *
+ * @type {boolean}
+ */
+goog.Uri.preserveParameterTypesCompatibilityFlag = false;
+
+
+/**
+ * Parameter name added to stop caching.
+ * @type {string}
+ */
+goog.Uri.RANDOM_PARAM = goog.uri.utils.StandardQueryParam.RANDOM;
+
+
+/**
+ * @return {string} The string form of the url.
+ * @override
+ */
+goog.Uri.prototype.toString = function() {
+ var out = [];
+
+ var scheme = this.getScheme();
+ if (scheme) {
+ out.push(
+ goog.Uri.encodeSpecialChars_(
+ scheme, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),
+ ':');
+ }
+
+ var domain = this.getDomain();
+ if (domain || scheme == 'file') {
+ out.push('//');
+
+ var userInfo = this.getUserInfo();
+ if (userInfo) {
+ out.push(
+ goog.Uri.encodeSpecialChars_(
+ userInfo, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),
+ '@');
+ }
+
+ out.push(goog.Uri.removeDoubleEncoding_(goog.string.urlEncode(domain)));
+
+ var port = this.getPort();
+ if (port != null) {
+ out.push(':', String(port));
+ }
+ }
+
+ var path = this.getPath();
+ if (path) {
+ if (this.hasDomain() && path.charAt(0) != '/') {
+ out.push('/');
+ }
+ out.push(
+ goog.Uri.encodeSpecialChars_(
+ path, path.charAt(0) == '/' ? goog.Uri.reDisallowedInAbsolutePath_ :
+ goog.Uri.reDisallowedInRelativePath_,
+ true));
+ }
+
+ var query = this.getEncodedQuery();
+ if (query) {
+ out.push('?', query);
+ }
+
+ var fragment = this.getFragment();
+ if (fragment) {
+ out.push(
+ '#', goog.Uri.encodeSpecialChars_(
+ fragment, goog.Uri.reDisallowedInFragment_));
+ }
+ return out.join('');
+};
+
+
+/**
+ * Resolves the given relative URI (a goog.Uri object), using the URI
+ * represented by this instance as the base URI.
+ *
+ * There are several kinds of relative URIs:<br>
+ * 1. foo - replaces the last part of the path, the whole query and fragment<br>
+ * 2. /foo - replaces the the path, the query and fragment<br>
+ * 3. //foo - replaces everything from the domain on. foo is a domain name<br>
+ * 4. ?foo - replace the query and fragment<br>
+ * 5. #foo - replace the fragment only
+ *
+ * Additionally, if relative URI has a non-empty path, all ".." and "."
+ * segments will be resolved, as described in RFC 3986.
+ *
+ * @param {!goog.Uri} relativeUri The relative URI to resolve.
+ * @return {!goog.Uri} The resolved URI.
+ */
+goog.Uri.prototype.resolve = function(relativeUri) {
+
+ var absoluteUri = this.clone();
+
+ // we satisfy these conditions by looking for the first part of relativeUri
+ // that is not blank and applying defaults to the rest
+
+ var overridden = relativeUri.hasScheme();
+
+ if (overridden) {
+ absoluteUri.setScheme(relativeUri.getScheme());
+ } else {
+ overridden = relativeUri.hasUserInfo();
+ }
+
+ if (overridden) {
+ absoluteUri.setUserInfo(relativeUri.getUserInfo());
+ } else {
+ overridden = relativeUri.hasDomain();
+ }
+
+ if (overridden) {
+ absoluteUri.setDomain(relativeUri.getDomain());
+ } else {
+ overridden = relativeUri.hasPort();
+ }
+
+ var path = relativeUri.getPath();
+ if (overridden) {
+ absoluteUri.setPort(relativeUri.getPort());
+ } else {
+ overridden = relativeUri.hasPath();
+ if (overridden) {
+ // resolve path properly
+ if (path.charAt(0) != '/') {
+ // path is relative
+ if (this.hasDomain() && !this.hasPath()) {
+ // RFC 3986, section 5.2.3, case 1
+ path = '/' + path;
+ } else {
+ // RFC 3986, section 5.2.3, case 2
+ var lastSlashIndex = absoluteUri.getPath().lastIndexOf('/');
+ if (lastSlashIndex != -1) {
+ path = absoluteUri.getPath().substr(0, lastSlashIndex + 1) + path;
+ }
+ }
+ }
+ path = goog.Uri.removeDotSegments(path);
+ }
+ }
+
+ if (overridden) {
+ absoluteUri.setPath(path);
+ } else {
+ overridden = relativeUri.hasQuery();
+ }
+
+ if (overridden) {
+ absoluteUri.setQueryData(relativeUri.getDecodedQuery());
+ } else {
+ overridden = relativeUri.hasFragment();
+ }
+
+ if (overridden) {
+ absoluteUri.setFragment(relativeUri.getFragment());
+ }
+
+ return absoluteUri;
+};
+
+
+/**
+ * Clones the URI instance.
+ * @return {!goog.Uri} New instance of the URI object.
+ */
+goog.Uri.prototype.clone = function() {
+ return new goog.Uri(this);
+};
+
+
+/**
+ * @return {string} The encoded scheme/protocol for the URI.
+ */
+goog.Uri.prototype.getScheme = function() {
+ return this.scheme_;
+};
+
+
+/**
+ * Sets the scheme/protocol.
+ * @throws URIError If opt_decode is true and newScheme is malformed (that is,
+ * if decodeURIComponent fails).
+ * @param {string} newScheme New scheme value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setScheme = function(newScheme, opt_decode) {
+ this.enforceReadOnly();
+ this.scheme_ =
+ opt_decode ? goog.Uri.decodeOrEmpty_(newScheme, true) : newScheme;
+
+ // remove an : at the end of the scheme so somebody can pass in
+ // window.location.protocol
+ if (this.scheme_) {
+ this.scheme_ = this.scheme_.replace(/:$/, '');
+ }
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the scheme has been set.
+ */
+goog.Uri.prototype.hasScheme = function() {
+ return !!this.scheme_;
+};
+
+
+/**
+ * @return {string} The decoded user info.
+ */
+goog.Uri.prototype.getUserInfo = function() {
+ return this.userInfo_;
+};
+
+
+/**
+ * Sets the userInfo.
+ * @throws URIError If opt_decode is true and newUserInfo is malformed (that is,
+ * if decodeURIComponent fails).
+ * @param {string} newUserInfo New userInfo value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setUserInfo = function(newUserInfo, opt_decode) {
+ this.enforceReadOnly();
+ this.userInfo_ =
+ opt_decode ? goog.Uri.decodeOrEmpty_(newUserInfo) : newUserInfo;
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the user info has been set.
+ */
+goog.Uri.prototype.hasUserInfo = function() {
+ return !!this.userInfo_;
+};
+
+
+/**
+ * @return {string} The decoded domain.
+ */
+goog.Uri.prototype.getDomain = function() {
+ return this.domain_;
+};
+
+
+/**
+ * Sets the domain.
+ * @throws URIError If opt_decode is true and newDomain is malformed (that is,
+ * if decodeURIComponent fails).
+ * @param {string} newDomain New domain value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setDomain = function(newDomain, opt_decode) {
+ this.enforceReadOnly();
+ this.domain_ =
+ opt_decode ? goog.Uri.decodeOrEmpty_(newDomain, true) : newDomain;
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the domain has been set.
+ */
+goog.Uri.prototype.hasDomain = function() {
+ return !!this.domain_;
+};
+
+
+/**
+ * @return {?number} The port number.
+ */
+goog.Uri.prototype.getPort = function() {
+ return this.port_;
+};
+
+
+/**
+ * Sets the port number.
+ * @param {*} newPort Port number. Will be explicitly casted to a number.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setPort = function(newPort) {
+ this.enforceReadOnly();
+
+ if (newPort) {
+ newPort = Number(newPort);
+ if (isNaN(newPort) || newPort < 0) {
+ throw Error('Bad port number ' + newPort);
+ }
+ this.port_ = newPort;
+ } else {
+ this.port_ = null;
+ }
+
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the port has been set.
+ */
+goog.Uri.prototype.hasPort = function() {
+ return this.port_ != null;
+};
+
+
+/**
+ * @return {string} The decoded path.
+ */
+goog.Uri.prototype.getPath = function() {
+ return this.path_;
+};
+
+
+/**
+ * Sets the path.
+ * @throws URIError If opt_decode is true and newPath is malformed (that is,
+ * if decodeURIComponent fails).
+ * @param {string} newPath New path value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setPath = function(newPath, opt_decode) {
+ this.enforceReadOnly();
+ this.path_ = opt_decode ? goog.Uri.decodeOrEmpty_(newPath, true) : newPath;
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the path has been set.
+ */
+goog.Uri.prototype.hasPath = function() {
+ return !!this.path_;
+};
+
+
+/**
+ * @return {boolean} Whether the query string has been set.
+ */
+goog.Uri.prototype.hasQuery = function() {
+ return this.queryData_.toString() !== '';
+};
+
+
+/**
+ * Sets the query data.
+ * @param {goog.Uri.QueryData|string|undefined} queryData QueryData object.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * Applies only if queryData is a string.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setQueryData = function(queryData, opt_decode) {
+ this.enforceReadOnly();
+
+ if (queryData instanceof goog.Uri.QueryData) {
+ this.queryData_ = queryData;
+ this.queryData_.setIgnoreCase(this.ignoreCase_);
+ } else {
+ if (!opt_decode) {
+ // QueryData accepts encoded query string, so encode it if
+ // opt_decode flag is not true.
+ queryData = goog.Uri.encodeSpecialChars_(
+ queryData, goog.Uri.reDisallowedInQuery_);
+ }
+ this.queryData_ = new goog.Uri.QueryData(queryData, null, this.ignoreCase_);
+ }
+
+ return this;
+};
+
+
+/**
+ * Sets the URI query.
+ * @param {string} newQuery New query value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setQuery = function(newQuery, opt_decode) {
+ return this.setQueryData(newQuery, opt_decode);
+};
+
+
+/**
+ * @return {string} The encoded URI query, not including the ?.
+ */
+goog.Uri.prototype.getEncodedQuery = function() {
+ return this.queryData_.toString();
+};
+
+
+/**
+ * @return {string} The decoded URI query, not including the ?.
+ */
+goog.Uri.prototype.getDecodedQuery = function() {
+ return this.queryData_.toDecodedString();
+};
+
+
+/**
+ * Returns the query data.
+ * @return {!goog.Uri.QueryData} QueryData object.
+ */
+goog.Uri.prototype.getQueryData = function() {
+ return this.queryData_;
+};
+
+
+/**
+ * @return {string} The encoded URI query, not including the ?.
+ *
+ * Warning: This method, unlike other getter methods, returns encoded
+ * value, instead of decoded one.
+ */
+goog.Uri.prototype.getQuery = function() {
+ return this.getEncodedQuery();
+};
+
+
+/**
+ * Sets the value of the named query parameters, clearing previous values for
+ * that key.
+ *
+ * @param {string} key The parameter to set.
+ * @param {*} value The new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setParameterValue = function(key, value) {
+ this.enforceReadOnly();
+ this.queryData_.set(key, value);
+ return this;
+};
+
+
+/**
+ * Sets the values of the named query parameters, clearing previous values for
+ * that key. Not new values will currently be moved to the end of the query
+ * string.
+ *
+ * So, <code>goog.Uri.parse('foo?a=b&c=d&e=f').setParameterValues('c', ['new'])
+ * </code> yields <tt>foo?a=b&e=f&c=new</tt>.</p>
+ *
+ * @param {string} key The parameter to set.
+ * @param {*} values The new values. If values is a single
+ * string then it will be treated as the sole value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setParameterValues = function(key, values) {
+ this.enforceReadOnly();
+
+ if (!goog.isArray(values)) {
+ values = [String(values)];
+ }
+
+ this.queryData_.setValues(key, values);
+
+ return this;
+};
+
+
+/**
+ * Returns the value<b>s</b> for a given cgi parameter as a list of decoded
+ * query parameter values.
+ * @param {string} name The parameter to get values for.
+ * @return {!Array<?>} The values for a given cgi parameter as a list of
+ * decoded query parameter values.
+ */
+goog.Uri.prototype.getParameterValues = function(name) {
+ return this.queryData_.getValues(name);
+};
+
+
+/**
+ * Returns the first value for a given cgi parameter or undefined if the given
+ * parameter name does not appear in the query string.
+ * @param {string} paramName Unescaped parameter name.
+ * @return {string|undefined} The first value for a given cgi parameter or
+ * undefined if the given parameter name does not appear in the query
+ * string.
+ */
+goog.Uri.prototype.getParameterValue = function(paramName) {
+ // NOTE(nicksantos): This type-cast is a lie when
+ // preserveParameterTypesCompatibilityFlag is set to true.
+ // But this should only be set to true in tests.
+ return /** @type {string|undefined} */ (this.queryData_.get(paramName));
+};
+
+
+/**
+ * @return {string} The URI fragment, not including the #.
+ */
+goog.Uri.prototype.getFragment = function() {
+ return this.fragment_;
+};
+
+
+/**
+ * Sets the URI fragment.
+ * @throws URIError If opt_decode is true and newFragment is malformed (that is,
+ * if decodeURIComponent fails).
+ * @param {string} newFragment New fragment value.
+ * @param {boolean=} opt_decode Optional param for whether to decode new value.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.setFragment = function(newFragment, opt_decode) {
+ this.enforceReadOnly();
+ this.fragment_ =
+ opt_decode ? goog.Uri.decodeOrEmpty_(newFragment) : newFragment;
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the URI has a fragment set.
+ */
+goog.Uri.prototype.hasFragment = function() {
+ return !!this.fragment_;
+};
+
+
+/**
+ * Returns true if this has the same domain as that of uri2.
+ * @param {!goog.Uri} uri2 The URI object to compare to.
+ * @return {boolean} true if same domain; false otherwise.
+ */
+goog.Uri.prototype.hasSameDomainAs = function(uri2) {
+ return ((!this.hasDomain() && !uri2.hasDomain()) ||
+ this.getDomain() == uri2.getDomain()) &&
+ ((!this.hasPort() && !uri2.hasPort()) ||
+ this.getPort() == uri2.getPort());
+};
+
+
+/**
+ * Adds a random parameter to the Uri.
+ * @return {!goog.Uri} Reference to this Uri object.
+ */
+goog.Uri.prototype.makeUnique = function() {
+ this.enforceReadOnly();
+ this.setParameterValue(goog.Uri.RANDOM_PARAM, goog.string.getRandomString());
+
+ return this;
+};
+
+
+/**
+ * Removes the named query parameter.
+ *
+ * @param {string} key The parameter to remove.
+ * @return {!goog.Uri} Reference to this URI object.
+ */
+goog.Uri.prototype.removeParameter = function(key) {
+ this.enforceReadOnly();
+ this.queryData_.remove(key);
+ return this;
+};
+
+
+/**
+ * Sets whether Uri is read only. If this goog.Uri is read-only,
+ * enforceReadOnly_ will be called at the start of any function that may modify
+ * this Uri.
+ * @param {boolean} isReadOnly whether this goog.Uri should be read only.
+ * @return {!goog.Uri} Reference to this Uri object.
+ */
+goog.Uri.prototype.setReadOnly = function(isReadOnly) {
+ this.isReadOnly_ = isReadOnly;
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether the URI is read only.
+ */
+goog.Uri.prototype.isReadOnly = function() {
+ return this.isReadOnly_;
+};
+
+
+/**
+ * Checks if this Uri has been marked as read only, and if so, throws an error.
+ * This should be called whenever any modifying function is called.
+ */
+goog.Uri.prototype.enforceReadOnly = function() {
+ if (this.isReadOnly_) {
+ throw Error('Tried to modify a read-only Uri');
+ }
+};
+
+
+/**
+ * Sets whether to ignore case.
+ * NOTE: If there are already key/value pairs in the QueryData, and
+ * ignoreCase_ is set to false, the keys will all be lower-cased.
+ * @param {boolean} ignoreCase whether this goog.Uri should ignore case.
+ * @return {!goog.Uri} Reference to this Uri object.
+ */
+goog.Uri.prototype.setIgnoreCase = function(ignoreCase) {
+ this.ignoreCase_ = ignoreCase;
+ if (this.queryData_) {
+ this.queryData_.setIgnoreCase(ignoreCase);
+ }
+ return this;
+};
+
+
+/**
+ * @return {boolean} Whether to ignore case.
+ */
+goog.Uri.prototype.getIgnoreCase = function() {
+ return this.ignoreCase_;
+};
+
+
+//==============================================================================
+// Static members
+//==============================================================================
+
+
+/**
+ * Creates a uri from the string form. Basically an alias of new goog.Uri().
+ * If a Uri object is passed to parse then it will return a clone of the object.
+ *
+ * @throws URIError If parsing the URI is malformed. The passed URI components
+ * should all be parseable by decodeURIComponent.
+ * @param {*} uri Raw URI string or instance of Uri
+ * object.
+ * @param {boolean=} opt_ignoreCase Whether to ignore the case of parameter
+ * names in #getParameterValue.
+ * @return {!goog.Uri} The new URI object.
+ */
+goog.Uri.parse = function(uri, opt_ignoreCase) {
+ return uri instanceof goog.Uri ? uri.clone() :
+ new goog.Uri(uri, opt_ignoreCase);
+};
+
+
+/**
+ * Creates a new goog.Uri object from unencoded parts.
+ *
+ * @param {?string=} opt_scheme Scheme/protocol or full URI to parse.
+ * @param {?string=} opt_userInfo username:password.
+ * @param {?string=} opt_domain www.google.com.
+ * @param {?number=} opt_port 9830.
+ * @param {?string=} opt_path /some/path/to/a/file.html.
+ * @param {string|goog.Uri.QueryData=} opt_query a=1&b=2.
+ * @param {?string=} opt_fragment The fragment without the #.
+ * @param {boolean=} opt_ignoreCase Whether to ignore parameter name case in
+ * #getParameterValue.
+ *
+ * @return {!goog.Uri} The new URI object.
+ */
+goog.Uri.create = function(
+ opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_query,
+ opt_fragment, opt_ignoreCase) {
+
+ var uri = new goog.Uri(null, opt_ignoreCase);
+
+ // Only set the parts if they are defined and not empty strings.
+ opt_scheme && uri.setScheme(opt_scheme);
+ opt_userInfo && uri.setUserInfo(opt_userInfo);
+ opt_domain && uri.setDomain(opt_domain);
+ opt_port && uri.setPort(opt_port);
+ opt_path && uri.setPath(opt_path);
+ opt_query && uri.setQueryData(opt_query);
+ opt_fragment && uri.setFragment(opt_fragment);
+
+ return uri;
+};
+
+
+/**
+ * Resolves a relative Uri against a base Uri, accepting both strings and
+ * Uri objects.
+ *
+ * @param {*} base Base Uri.
+ * @param {*} rel Relative Uri.
+ * @return {!goog.Uri} Resolved uri.
+ */
+goog.Uri.resolve = function(base, rel) {
+ if (!(base instanceof goog.Uri)) {
+ base = goog.Uri.parse(base);
+ }
+
+ if (!(rel instanceof goog.Uri)) {
+ rel = goog.Uri.parse(rel);
+ }
+
+ return base.resolve(rel);
+};
+
+
+/**
+ * Removes dot segments in given path component, as described in
+ * RFC 3986, section 5.2.4.
+ *
+ * @param {string} path A non-empty path component.
+ * @return {string} Path component with removed dot segments.
+ */
+goog.Uri.removeDotSegments = function(path) {
+ if (path == '..' || path == '.') {
+ return '';
+
+ } else if (
+ !goog.string.contains(path, './') && !goog.string.contains(path, '/.')) {
+ // This optimization detects uris which do not contain dot-segments,
+ // and as a consequence do not require any processing.
+ return path;
+
+ } else {
+ var leadingSlash = goog.string.startsWith(path, '/');
+ var segments = path.split('/');
+ var out = [];
+
+ for (var pos = 0; pos < segments.length;) {
+ var segment = segments[pos++];
+
+ if (segment == '.') {
+ if (leadingSlash && pos == segments.length) {
+ out.push('');
+ }
+ } else if (segment == '..') {
+ if (out.length > 1 || out.length == 1 && out[0] != '') {
+ out.pop();
+ }
+ if (leadingSlash && pos == segments.length) {
+ out.push('');
+ }
+ } else {
+ out.push(segment);
+ leadingSlash = true;
+ }
+ }
+
+ return out.join('/');
+ }
+};
+
+
+/**
+ * Decodes a value or returns the empty string if it isn't defined or empty.
+ * @throws URIError If decodeURIComponent fails to decode val.
+ * @param {string|undefined} val Value to decode.
+ * @param {boolean=} opt_preserveReserved If true, restricted characters will
+ * not be decoded.
+ * @return {string} Decoded value.
+ * @private
+ */
+goog.Uri.decodeOrEmpty_ = function(val, opt_preserveReserved) {
+ // Don't use UrlDecode() here because val is not a query parameter.
+ if (!val) {
+ return '';
+ }
+
+ // decodeURI has the same output for '%2f' and '%252f'. We double encode %25
+ // so that we can distinguish between the 2 inputs. This is later undone by
+ // removeDoubleEncoding_.
+ return opt_preserveReserved ? decodeURI(val.replace(/%25/g, '%2525')) :
+ decodeURIComponent(val);
+};
+
+
+/**
+ * If unescapedPart is non null, then escapes any characters in it that aren't
+ * valid characters in a url and also escapes any special characters that
+ * appear in extra.
+ *
+ * @param {*} unescapedPart The string to encode.
+ * @param {RegExp} extra A character set of characters in [\01-\177].
+ * @param {boolean=} opt_removeDoubleEncoding If true, remove double percent
+ * encoding.
+ * @return {?string} null iff unescapedPart == null.
+ * @private
+ */
+goog.Uri.encodeSpecialChars_ = function(
+ unescapedPart, extra, opt_removeDoubleEncoding) {
+ if (goog.isString(unescapedPart)) {
+ var encoded = encodeURI(unescapedPart).replace(extra, goog.Uri.encodeChar_);
+ if (opt_removeDoubleEncoding) {
+ // encodeURI double-escapes %XX sequences used to represent restricted
+ // characters in some URI components, remove the double escaping here.
+ encoded = goog.Uri.removeDoubleEncoding_(encoded);
+ }
+ return encoded;
+ }
+ return null;
+};
+
+
+/**
+ * Converts a character in [\01-\177] to its unicode character equivalent.
+ * @param {string} ch One character string.
+ * @return {string} Encoded string.
+ * @private
+ */
+goog.Uri.encodeChar_ = function(ch) {
+ var n = ch.charCodeAt(0);
+ return '%' + ((n >> 4) & 0xf).toString(16) + (n & 0xf).toString(16);
+};
+
+
+/**
+ * Removes double percent-encoding from a string.
+ * @param {string} doubleEncodedString String
+ * @return {string} String with double encoding removed.
+ * @private
+ */
+goog.Uri.removeDoubleEncoding_ = function(doubleEncodedString) {
+ return doubleEncodedString.replace(/%25([0-9a-fA-F]{2})/g, '%$1');
+};
+
+
+/**
+ * Regular expression for characters that are disallowed in the scheme or
+ * userInfo part of the URI.
+ * @type {RegExp}
+ * @private
+ */
+goog.Uri.reDisallowedInSchemeOrUserInfo_ = /[#\/\?@]/g;
+
+
+/**
+ * Regular expression for characters that are disallowed in a relative path.
+ * Colon is included due to RFC 3986 3.3.
+ * @type {RegExp}
+ * @private
+ */
+goog.Uri.reDisallowedInRelativePath_ = /[\#\?:]/g;
+
+
+/**
+ * Regular expression for characters that are disallowed in an absolute path.
+ * @type {RegExp}
+ * @private
+ */
+goog.Uri.reDisallowedInAbsolutePath_ = /[\#\?]/g;
+
+
+/**
+ * Regular expression for characters that are disallowed in the query.
+ * @type {RegExp}
+ * @private
+ */
+goog.Uri.reDisallowedInQuery_ = /[\#\?@]/g;
+
+
+/**
+ * Regular expression for characters that are disallowed in the fragment.
+ * @type {RegExp}
+ * @private
+ */
+goog.Uri.reDisallowedInFragment_ = /#/g;
+
+
+/**
+ * Checks whether two URIs have the same domain.
+ * @param {string} uri1String First URI string.
+ * @param {string} uri2String Second URI string.
+ * @return {boolean} true if the two URIs have the same domain; false otherwise.
+ */
+goog.Uri.haveSameDomain = function(uri1String, uri2String) {
+ // Differs from goog.uri.utils.haveSameDomain, since this ignores scheme.
+ // TODO(gboyer): Have this just call goog.uri.util.haveSameDomain.
+ var pieces1 = goog.uri.utils.split(uri1String);
+ var pieces2 = goog.uri.utils.split(uri2String);
+ return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==
+ pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&
+ pieces1[goog.uri.utils.ComponentIndex.PORT] ==
+ pieces2[goog.uri.utils.ComponentIndex.PORT];
+};
+
+
+
+/**
+ * Class used to represent URI query parameters. It is essentially a hash of
+ * name-value pairs, though a name can be present more than once.
+ *
+ * Has the same interface as the collections in goog.structs.
+ *
+ * @param {?string=} opt_query Optional encoded query string to parse into
+ * the object.
+ * @param {goog.Uri=} opt_uri Optional uri object that should have its
+ * cache invalidated when this object updates. Deprecated -- this
+ * is no longer required.
+ * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter
+ * name in #get.
+ * @constructor
+ * @struct
+ * @final
+ */
+goog.Uri.QueryData = function(opt_query, opt_uri, opt_ignoreCase) {
+ /**
+ * The map containing name/value or name/array-of-values pairs.
+ * May be null if it requires parsing from the query string.
+ *
+ * We need to use a Map because we cannot guarantee that the key names will
+ * not be problematic for IE.
+ *
+ * @private {goog.structs.Map<string, !Array<*>>}
+ */
+ this.keyMap_ = null;
+
+ /**
+ * The number of params, or null if it requires computing.
+ * @private {?number}
+ */
+ this.count_ = null;
+
+ /**
+ * Encoded query string, or null if it requires computing from the key map.
+ * @private {?string}
+ */
+ this.encodedQuery_ = opt_query || null;
+
+ /**
+ * If true, ignore the case of the parameter name in #get.
+ * @private {boolean}
+ */
+ this.ignoreCase_ = !!opt_ignoreCase;
+};
+
+
+/**
+ * If the underlying key map is not yet initialized, it parses the
+ * query string and fills the map with parsed data.
+ * @private
+ */
+goog.Uri.QueryData.prototype.ensureKeyMapInitialized_ = function() {
+ if (!this.keyMap_) {
+ this.keyMap_ = new goog.structs.Map();
+ this.count_ = 0;
+ if (this.encodedQuery_) {
+ var self = this;
+ goog.uri.utils.parseQueryData(this.encodedQuery_, function(name, value) {
+ self.add(goog.string.urlDecode(name), value);
+ });
+ }
+ }
+};
+
+
+/**
+ * Creates a new query data instance from a map of names and values.
+ *
+ * @param {!goog.structs.Map<string, ?>|!Object} map Map of string parameter
+ * names to parameter value. If parameter value is an array, it is
+ * treated as if the key maps to each individual value in the
+ * array.
+ * @param {goog.Uri=} opt_uri URI object that should have its cache
+ * invalidated when this object updates.
+ * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter
+ * name in #get.
+ * @return {!goog.Uri.QueryData} The populated query data instance.
+ */
+goog.Uri.QueryData.createFromMap = function(map, opt_uri, opt_ignoreCase) {
+ var keys = goog.structs.getKeys(map);
+ if (typeof keys == 'undefined') {
+ throw Error('Keys are undefined');
+ }
+
+ var queryData = new goog.Uri.QueryData(null, null, opt_ignoreCase);
+ var values = goog.structs.getValues(map);
+ for (var i = 0; i < keys.length; i++) {
+ var key = keys[i];
+ var value = values[i];
+ if (!goog.isArray(value)) {
+ queryData.add(key, value);
+ } else {
+ queryData.setValues(key, value);
+ }
+ }
+ return queryData;
+};
+
+
+/**
+ * Creates a new query data instance from parallel arrays of parameter names
+ * and values. Allows for duplicate parameter names. Throws an error if the
+ * lengths of the arrays differ.
+ *
+ * @param {!Array<string>} keys Parameter names.
+ * @param {!Array<?>} values Parameter values.
+ * @param {goog.Uri=} opt_uri URI object that should have its cache
+ * invalidated when this object updates.
+ * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter
+ * name in #get.
+ * @return {!goog.Uri.QueryData} The populated query data instance.
+ */
+goog.Uri.QueryData.createFromKeysValues = function(
+ keys, values, opt_uri, opt_ignoreCase) {
+ if (keys.length != values.length) {
+ throw Error('Mismatched lengths for keys/values');
+ }
+ var queryData = new goog.Uri.QueryData(null, null, opt_ignoreCase);
+ for (var i = 0; i < keys.length; i++) {
+ queryData.add(keys[i], values[i]);
+ }
+ return queryData;
+};
+
+
+/**
+ * @return {?number} The number of parameters.
+ */
+goog.Uri.QueryData.prototype.getCount = function() {
+ this.ensureKeyMapInitialized_();
+ return this.count_;
+};
+
+
+/**
+ * Adds a key value pair.
+ * @param {string} key Name.
+ * @param {*} value Value.
+ * @return {!goog.Uri.QueryData} Instance of this object.
+ */
+goog.Uri.QueryData.prototype.add = function(key, value) {
+ this.ensureKeyMapInitialized_();
+ this.invalidateCache_();
+
+ key = this.getKeyName_(key);
+ var values = this.keyMap_.get(key);
+ if (!values) {
+ this.keyMap_.set(key, (values = []));
+ }
+ values.push(value);
+ this.count_ = goog.asserts.assertNumber(this.count_) + 1;
+ return this;
+};
+
+
+/**
+ * Removes all the params with the given key.
+ * @param {string} key Name.
+ * @return {boolean} Whether any parameter was removed.
+ */
+goog.Uri.QueryData.prototype.remove = function(key) {
+ this.ensureKeyMapInitialized_();
+
+ key = this.getKeyName_(key);
+ if (this.keyMap_.containsKey(key)) {
+ this.invalidateCache_();
+
+ // Decrement parameter count.
+ this.count_ =
+ goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;
+ return this.keyMap_.remove(key);
+ }
+ return false;
+};
+
+
+/**
+ * Clears the parameters.
+ */
+goog.Uri.QueryData.prototype.clear = function() {
+ this.invalidateCache_();
+ this.keyMap_ = null;
+ this.count_ = 0;
+};
+
+
+/**
+ * @return {boolean} Whether we have any parameters.
+ */
+goog.Uri.QueryData.prototype.isEmpty = function() {
+ this.ensureKeyMapInitialized_();
+ return this.count_ == 0;
+};
+
+
+/**
+ * Whether there is a parameter with the given name
+ * @param {string} key The parameter name to check for.
+ * @return {boolean} Whether there is a parameter with the given name.
+ */
+goog.Uri.QueryData.prototype.containsKey = function(key) {
+ this.ensureKeyMapInitialized_();
+ key = this.getKeyName_(key);
+ return this.keyMap_.containsKey(key);
+};
+
+
+/**
+ * Whether there is a parameter with the given value.
+ * @param {*} value The value to check for.
+ * @return {boolean} Whether there is a parameter with the given value.
+ */
+goog.Uri.QueryData.prototype.containsValue = function(value) {
+ // NOTE(arv): This solution goes through all the params even if it was the
+ // first param. We can get around this by not reusing code or by switching to
+ // iterators.
+ var vals = this.getValues();
+ return goog.array.contains(vals, value);
+};
+
+
+/**
+ * Returns all the keys of the parameters. If a key is used multiple times
+ * it will be included multiple times in the returned array
+ * @return {!Array<string>} All the keys of the parameters.
+ */
+goog.Uri.QueryData.prototype.getKeys = function() {
+ this.ensureKeyMapInitialized_();
+ // We need to get the values to know how many keys to add.
+ var vals = this.keyMap_.getValues();
+ var keys = this.keyMap_.getKeys();
+ var rv = [];
+ for (var i = 0; i < keys.length; i++) {
+ var val = vals[i];
+ for (var j = 0; j < val.length; j++) {
+ rv.push(keys[i]);
+ }
+ }
+ return rv;
+};
+
+
+/**
+ * Returns all the values of the parameters with the given name. If the query
+ * data has no such key this will return an empty array. If no key is given
+ * all values wil be returned.
+ * @param {string=} opt_key The name of the parameter to get the values for.
+ * @return {!Array<?>} All the values of the parameters with the given name.
+ */
+goog.Uri.QueryData.prototype.getValues = function(opt_key) {
+ this.ensureKeyMapInitialized_();
+ var rv = [];
+ if (goog.isString(opt_key)) {
+ if (this.containsKey(opt_key)) {
+ rv = goog.array.concat(rv, this.keyMap_.get(this.getKeyName_(opt_key)));
+ }
+ } else {
+ // Return all values.
+ var values = this.keyMap_.getValues();
+ for (var i = 0; i < values.length; i++) {
+ rv = goog.array.concat(rv, values[i]);
+ }
+ }
+ return rv;
+};
+
+
+/**
+ * Sets a key value pair and removes all other keys with the same value.
+ *
+ * @param {string} key Name.
+ * @param {*} value Value.
+ * @return {!goog.Uri.QueryData} Instance of this object.
+ */
+goog.Uri.QueryData.prototype.set = function(key, value) {
+ this.ensureKeyMapInitialized_();
+ this.invalidateCache_();
+
+ // TODO(chrishenry): This could be better written as
+ // this.remove(key), this.add(key, value), but that would reorder
+ // the key (since the key is first removed and then added at the
+ // end) and we would have to fix unit tests that depend on key
+ // ordering.
+ key = this.getKeyName_(key);
+ if (this.containsKey(key)) {
+ this.count_ =
+ goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;
+ }
+ this.keyMap_.set(key, [value]);
+ this.count_ = goog.asserts.assertNumber(this.count_) + 1;
+ return this;
+};
+
+
+/**
+ * Returns the first value associated with the key. If the query data has no
+ * such key this will return undefined or the optional default.
+ * @param {string} key The name of the parameter to get the value for.
+ * @param {*=} opt_default The default value to return if the query data
+ * has no such key.
+ * @return {*} The first string value associated with the key, or opt_default
+ * if there's no value.
+ */
+goog.Uri.QueryData.prototype.get = function(key, opt_default) {
+ var values = key ? this.getValues(key) : [];
+ if (goog.Uri.preserveParameterTypesCompatibilityFlag) {
+ return values.length > 0 ? values[0] : opt_default;
+ } else {
+ return values.length > 0 ? String(values[0]) : opt_default;
+ }
+};
+
+
+/**
+ * Sets the values for a key. If the key already exists, this will
+ * override all of the existing values that correspond to the key.
+ * @param {string} key The key to set values for.
+ * @param {!Array<?>} values The values to set.
+ */
+goog.Uri.QueryData.prototype.setValues = function(key, values) {
+ this.remove(key);
+
+ if (values.length > 0) {
+ this.invalidateCache_();
+ this.keyMap_.set(this.getKeyName_(key), goog.array.clone(values));
+ this.count_ = goog.asserts.assertNumber(this.count_) + values.length;
+ }
+};
+
+
+/**
+ * @return {string} Encoded query string.
+ * @override
+ */
+goog.Uri.QueryData.prototype.toString = function() {
+ if (this.encodedQuery_) {
+ return this.encodedQuery_;
+ }
+
+ if (!this.keyMap_) {
+ return '';
+ }
+
+ var sb = [];
+
+ // In the past, we use this.getKeys() and this.getVals(), but that
+ // generates a lot of allocations as compared to simply iterating
+ // over the keys.
+ var keys = this.keyMap_.getKeys();
+ for (var i = 0; i < keys.length; i++) {
+ var key = keys[i];
+ var encodedKey = goog.string.urlEncode(key);
+ var val = this.getValues(key);
+ for (var j = 0; j < val.length; j++) {
+ var param = encodedKey;
+ // Ensure that null and undefined are encoded into the url as
+ // literal strings.
+ if (val[j] !== '') {
+ param += '=' + goog.string.urlEncode(val[j]);
+ }
+ sb.push(param);
+ }
+ }
+
+ return this.encodedQuery_ = sb.join('&');
+};
+
+
+/**
+ * @throws URIError If URI is malformed (that is, if decodeURIComponent fails on
+ * any of the URI components).
+ * @return {string} Decoded query string.
+ */
+goog.Uri.QueryData.prototype.toDecodedString = function() {
+ return goog.Uri.decodeOrEmpty_(this.toString());
+};
+
+
+/**
+ * Invalidate the cache.
+ * @private
+ */
+goog.Uri.QueryData.prototype.invalidateCache_ = function() {
+ this.encodedQuery_ = null;
+};
+
+
+/**
+ * Removes all keys that are not in the provided list. (Modifies this object.)
+ * @param {Array<string>} keys The desired keys.
+ * @return {!goog.Uri.QueryData} a reference to this object.
+ */
+goog.Uri.QueryData.prototype.filterKeys = function(keys) {
+ this.ensureKeyMapInitialized_();
+ this.keyMap_.forEach(function(value, key) {
+ if (!goog.array.contains(keys, key)) {
+ this.remove(key);
+ }
+ }, this);
+ return this;
+};
+
+
+/**
+ * Clone the query data instance.
+ * @return {!goog.Uri.QueryData} New instance of the QueryData object.
+ */
+goog.Uri.QueryData.prototype.clone = function() {
+ var rv = new goog.Uri.QueryData();
+ rv.encodedQuery_ = this.encodedQuery_;
+ if (this.keyMap_) {
+ rv.keyMap_ = this.keyMap_.clone();
+ rv.count_ = this.count_;
+ }
+ return rv;
+};
+
+
+/**
+ * Helper function to get the key name from a JavaScript object. Converts
+ * the object to a string, and to lower case if necessary.
+ * @private
+ * @param {*} arg The object to get a key name from.
+ * @return {string} valid key name which can be looked up in #keyMap_.
+ */
+goog.Uri.QueryData.prototype.getKeyName_ = function(arg) {
+ var keyName = String(arg);
+ if (this.ignoreCase_) {
+ keyName = keyName.toLowerCase();
+ }
+ return keyName;
+};
+
+
+/**
+ * Ignore case in parameter names.
+ * NOTE: If there are already key/value pairs in the QueryData, and
+ * ignoreCase_ is set to false, the keys will all be lower-cased.
+ * @param {boolean} ignoreCase whether this goog.Uri should ignore case.
+ */
+goog.Uri.QueryData.prototype.setIgnoreCase = function(ignoreCase) {
+ var resetKeys = ignoreCase && !this.ignoreCase_;
+ if (resetKeys) {
+ this.ensureKeyMapInitialized_();
+ this.invalidateCache_();
+ this.keyMap_.forEach(function(value, key) {
+ var lowerCase = key.toLowerCase();
+ if (key != lowerCase) {
+ this.remove(key);
+ this.setValues(lowerCase, value);
+ }
+ }, this);
+ }
+ this.ignoreCase_ = ignoreCase;
+};
+
+
+/**
+ * Extends a query data object with another query data or map like object. This
+ * operates 'in-place', it does not create a new QueryData object.
+ *
+ * @param {...(goog.Uri.QueryData|goog.structs.Map<?, ?>|Object)} var_args
+ * The object from which key value pairs will be copied.
+ */
+goog.Uri.QueryData.prototype.extend = function(var_args) {
+ for (var i = 0; i < arguments.length; i++) {
+ var data = arguments[i];
+ goog.structs.forEach(
+ data, function(value, key) { this.add(key, value); }, this);
+ }
+};
+
+goog.provide('ol.style.Text');
+
+
+goog.require('ol.style.Fill');
+
+
+/**
+ * @classdesc
+ * Set text style for vector features.
+ *
+ * @constructor
+ * @param {olx.style.TextOptions=} opt_options Options.
+ * @api
+ */
+ol.style.Text = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.font_ = options.font;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.rotation_ = options.rotation;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.scale_ = options.scale;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.text_ = options.text;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.textAlign_ = options.textAlign;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.textBaseline_ = options.textBaseline;
+
+ /**
+ * @private
+ * @type {ol.style.Fill}
+ */
+ this.fill_ = options.fill !== undefined ? options.fill :
+ new ol.style.Fill({color: ol.style.Text.DEFAULT_FILL_COLOR_});
+
+ /**
+ * @private
+ * @type {ol.style.Stroke}
+ */
+ this.stroke_ = options.stroke !== undefined ? options.stroke : null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.offsetX_ = options.offsetX !== undefined ? options.offsetX : 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.offsetY_ = options.offsetY !== undefined ? options.offsetY : 0;
+};
+
+
+/**
+ * The default fill color to use if no fill was set at construction time; a
+ * blackish `#333`.
+ *
+ * @const {string}
+ * @private
+ */
+ol.style.Text.DEFAULT_FILL_COLOR_ = '#333';
+
+
+/**
+ * Get the font name.
+ * @return {string|undefined} Font.
+ * @api
+ */
+ol.style.Text.prototype.getFont = function() {
+ return this.font_;
+};
+
+
+/**
+ * Get the x-offset for the text.
+ * @return {number} Horizontal text offset.
+ * @api
+ */
+ol.style.Text.prototype.getOffsetX = function() {
+ return this.offsetX_;
+};
+
+
+/**
+ * Get the y-offset for the text.
+ * @return {number} Vertical text offset.
+ * @api
+ */
+ol.style.Text.prototype.getOffsetY = function() {
+ return this.offsetY_;
+};
+
+
+/**
+ * Get the fill style for the text.
+ * @return {ol.style.Fill} Fill style.
+ * @api
+ */
+ol.style.Text.prototype.getFill = function() {
+ return this.fill_;
+};
+
+
+/**
+ * Get the text rotation.
+ * @return {number|undefined} Rotation.
+ * @api
+ */
+ol.style.Text.prototype.getRotation = function() {
+ return this.rotation_;
+};
+
+
+/**
+ * Get the text scale.
+ * @return {number|undefined} Scale.
+ * @api
+ */
+ol.style.Text.prototype.getScale = function() {
+ return this.scale_;
+};
+
+
+/**
+ * Get the stroke style for the text.
+ * @return {ol.style.Stroke} Stroke style.
+ * @api
+ */
+ol.style.Text.prototype.getStroke = function() {
+ return this.stroke_;
+};
+
+
+/**
+ * Get the text to be rendered.
+ * @return {string|undefined} Text.
+ * @api
+ */
+ol.style.Text.prototype.getText = function() {
+ return this.text_;
+};
+
+
+/**
+ * Get the text alignment.
+ * @return {string|undefined} Text align.
+ * @api
+ */
+ol.style.Text.prototype.getTextAlign = function() {
+ return this.textAlign_;
+};
+
+
+/**
+ * Get the text baseline.
+ * @return {string|undefined} Text baseline.
+ * @api
+ */
+ol.style.Text.prototype.getTextBaseline = function() {
+ return this.textBaseline_;
+};
+
+
+/**
+ * Set the font.
+ *
+ * @param {string|undefined} font Font.
+ * @api
+ */
+ol.style.Text.prototype.setFont = function(font) {
+ this.font_ = font;
+};
+
+
+/**
+ * Set the x offset.
+ *
+ * @param {number} offsetX Horizontal text offset.
+ * @api
+ */
+ol.style.Text.prototype.setOffsetX = function(offsetX) {
+ this.offsetX_ = offsetX;
+};
+
+
+/**
+ * Set the y offset.
+ *
+ * @param {number} offsetY Vertical text offset.
+ * @api
+ */
+ol.style.Text.prototype.setOffsetY = function(offsetY) {
+ this.offsetY_ = offsetY;
+};
+
+
+/**
+ * Set the fill.
+ *
+ * @param {ol.style.Fill} fill Fill style.
+ * @api
+ */
+ol.style.Text.prototype.setFill = function(fill) {
+ this.fill_ = fill;
+};
+
+
+/**
+ * Set the rotation.
+ *
+ * @param {number|undefined} rotation Rotation.
+ * @api
+ */
+ol.style.Text.prototype.setRotation = function(rotation) {
+ this.rotation_ = rotation;
+};
+
+
+/**
+ * Set the scale.
+ *
+ * @param {number|undefined} scale Scale.
+ * @api
+ */
+ol.style.Text.prototype.setScale = function(scale) {
+ this.scale_ = scale;
+};
+
+
+/**
+ * Set the stroke.
+ *
+ * @param {ol.style.Stroke} stroke Stroke style.
+ * @api
+ */
+ol.style.Text.prototype.setStroke = function(stroke) {
+ this.stroke_ = stroke;
+};
+
+
+/**
+ * Set the text.
+ *
+ * @param {string|undefined} text Text.
+ * @api
+ */
+ol.style.Text.prototype.setText = function(text) {
+ this.text_ = text;
+};
+
+
+/**
+ * Set the text alignment.
+ *
+ * @param {string|undefined} textAlign Text align.
+ * @api
+ */
+ol.style.Text.prototype.setTextAlign = function(textAlign) {
+ this.textAlign_ = textAlign;
+};
+
+
+/**
+ * Set the text baseline.
+ *
+ * @param {string|undefined} textBaseline Text baseline.
+ * @api
+ */
+ol.style.Text.prototype.setTextBaseline = function(textBaseline) {
+ this.textBaseline_ = textBaseline;
+};
+
+// FIXME http://earth.google.com/kml/1.0 namespace?
+// FIXME why does node.getAttribute return an unknown type?
+// FIXME serialize arbitrary feature properties
+// FIXME don't parse style if extractStyles is false
+
+goog.provide('ol.format.KML');
+
+goog.require('goog.Uri');
+goog.require('goog.asserts');
+goog.require('goog.object');
+goog.require('ol');
+goog.require('ol.Feature');
+goog.require('ol.array');
+goog.require('ol.color');
+goog.require('ol.format.Feature');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.format.XSD');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryCollection');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.math');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Icon');
+goog.require('ol.style.IconAnchorUnits');
+goog.require('ol.style.IconOrigin');
+goog.require('ol.style.Image');
+goog.require('ol.style.Stroke');
+goog.require('ol.style.Style');
+goog.require('ol.style.Text');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the KML format.
+ *
+ * @constructor
+ * @extends {ol.format.XMLFeature}
+ * @param {olx.format.KMLOptions=} opt_options Options.
+ * @api stable
+ */
+ol.format.KML = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.XMLFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get('EPSG:4326');
+
+ /**
+ * @private
+ * @type {Array.<ol.style.Style>}
+ */
+ this.defaultStyle_ = options.defaultStyle ?
+ options.defaultStyle : ol.format.KML.DEFAULT_STYLE_ARRAY_;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.extractStyles_ = options.extractStyles !== undefined ?
+ options.extractStyles : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.writeStyles_ = options.writeStyles !== undefined ?
+ options.writeStyles : true;
+
+ /**
+ * @private
+ * @type {Object.<string, (Array.<ol.style.Style>|string)>}
+ */
+ this.sharedStyles_ = {};
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.showPointNames_ = options.showPointNames !== undefined ?
+ options.showPointNames : true;
+
+};
+ol.inherits(ol.format.KML, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.KML.EXTENSIONS_ = ['.kml'];
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.KML.GX_NAMESPACE_URIS_ = [
+ 'http://www.google.com/kml/ext/2.2'
+];
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.KML.NAMESPACE_URIS_ = [
+ null,
+ 'http://earth.google.com/kml/2.0',
+ 'http://earth.google.com/kml/2.1',
+ 'http://earth.google.com/kml/2.2',
+ 'http://www.opengis.net/kml/2.2'
+];
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.KML.SCHEMA_LOCATION_ = 'http://www.opengis.net/kml/2.2 ' +
+ 'https://developers.google.com/kml/schema/kml22gx.xsd';
+
+
+/**
+ * @const
+ * @type {ol.Color}
+ * @private
+ */
+ol.format.KML.DEFAULT_COLOR_ = [255, 255, 255, 1];
+
+
+/**
+ * @const
+ * @type {ol.style.Fill}
+ * @private
+ */
+ol.format.KML.DEFAULT_FILL_STYLE_ = new ol.style.Fill({
+ color: ol.format.KML.DEFAULT_COLOR_
+});
+
+
+/**
+ * @const
+ * @type {ol.Size}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_ = [20, 2]; // FIXME maybe [8, 32] ?
+
+
+/**
+ * @const
+ * @type {ol.style.IconAnchorUnits}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_ =
+ ol.style.IconAnchorUnits.PIXELS;
+
+
+/**
+ * @const
+ * @type {ol.style.IconAnchorUnits}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_ =
+ ol.style.IconAnchorUnits.PIXELS;
+
+
+/**
+ * @const
+ * @type {ol.Size}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_ = [64, 64];
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_ =
+ 'https://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png';
+
+
+/**
+ * @const
+ * @type {number}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_ = 0.5;
+
+
+/**
+ * @const
+ * @type {ol.style.Image}
+ * @private
+ */
+ol.format.KML.DEFAULT_IMAGE_STYLE_ = new ol.style.Icon({
+ anchor: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_,
+ anchorOrigin: ol.style.IconOrigin.BOTTOM_LEFT,
+ anchorXUnits: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_,
+ anchorYUnits: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_,
+ crossOrigin: 'anonymous',
+ rotation: 0,
+ scale: ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_,
+ size: ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_,
+ src: ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_
+});
+
+
+/**
+ * @const
+ * @type {ol.style.Stroke}
+ * @private
+ */
+ol.format.KML.DEFAULT_STROKE_STYLE_ = new ol.style.Stroke({
+ color: ol.format.KML.DEFAULT_COLOR_,
+ width: 1
+});
+
+
+/**
+ * @const
+ * @type {ol.style.Stroke}
+ * @private
+ */
+ol.format.KML.DEFAULT_TEXT_STROKE_STYLE_ = new ol.style.Stroke({
+ color: [51, 51, 51, 1],
+ width: 2
+});
+
+
+/**
+ * @const
+ * @type {ol.style.Text}
+ * @private
+ */
+ol.format.KML.DEFAULT_TEXT_STYLE_ = new ol.style.Text({
+ font: 'bold 16px Helvetica',
+ fill: ol.format.KML.DEFAULT_FILL_STYLE_,
+ stroke: ol.format.KML.DEFAULT_TEXT_STROKE_STYLE_,
+ scale: 0.8
+});
+
+
+/**
+ * @const
+ * @type {ol.style.Style}
+ * @private
+ */
+ol.format.KML.DEFAULT_STYLE_ = new ol.style.Style({
+ fill: ol.format.KML.DEFAULT_FILL_STYLE_,
+ image: ol.format.KML.DEFAULT_IMAGE_STYLE_,
+ text: ol.format.KML.DEFAULT_TEXT_STYLE_,
+ stroke: ol.format.KML.DEFAULT_STROKE_STYLE_,
+ zIndex: 0
+});
+
+
+/**
+ * @const
+ * @type {Array.<ol.style.Style>}
+ * @private
+ */
+ol.format.KML.DEFAULT_STYLE_ARRAY_ = [ol.format.KML.DEFAULT_STYLE_];
+
+
+/**
+ * @const
+ * @type {Object.<string, ol.style.IconAnchorUnits>}
+ * @private
+ */
+ol.format.KML.ICON_ANCHOR_UNITS_MAP_ = {
+ 'fraction': ol.style.IconAnchorUnits.FRACTION,
+ 'pixels': ol.style.IconAnchorUnits.PIXELS
+};
+
+
+/**
+ * @param {ol.style.Style|undefined} foundStyle Style.
+ * @param {string} name Name.
+ * @return {ol.style.Style} style Style.
+ * @private
+ */
+ol.format.KML.createNameStyleFunction_ = function(foundStyle, name) {
+ var textStyle = null;
+ var textOffset = [0, 0];
+ var textAlign = 'start';
+ if (foundStyle.getImage()) {
+ var imageSize = foundStyle.getImage().getImageSize();
+ if (imageSize && imageSize.length == 2) {
+ // Offset the label to be centered to the right of the icon, if there is
+ // one.
+ textOffset[0] = foundStyle.getImage().getScale() * imageSize[0] / 2;
+ textOffset[1] = -foundStyle.getImage().getScale() * imageSize[1] / 2;
+ textAlign = 'left';
+ }
+ }
+ if (!ol.object.isEmpty(foundStyle.getText())) {
+ textStyle = /** @type {ol.style.Text} */
+ (goog.object.clone(foundStyle.getText()));
+ textStyle.setText(name);
+ textStyle.setTextAlign(textAlign);
+ textStyle.setOffsetX(textOffset[0]);
+ textStyle.setOffsetY(textOffset[1]);
+ } else {
+ textStyle = new ol.style.Text({
+ text: name,
+ offsetX: textOffset[0],
+ offsetY: textOffset[1],
+ textAlign: textAlign
+ });
+ }
+ var nameStyle = new ol.style.Style({
+ text: textStyle
+ });
+ return nameStyle;
+};
+
+
+/**
+ * @param {Array.<ol.style.Style>|undefined} style Style.
+ * @param {string} styleUrl Style URL.
+ * @param {Array.<ol.style.Style>} defaultStyle Default style.
+ * @param {Object.<string, (Array.<ol.style.Style>|string)>} sharedStyles Shared
+ * styles.
+ * @param {boolean|undefined} showPointNames true to show names for point
+ * placemarks.
+ * @return {ol.FeatureStyleFunction} Feature style function.
+ * @private
+ */
+ol.format.KML.createFeatureStyleFunction_ = function(style, styleUrl,
+ defaultStyle, sharedStyles, showPointNames) {
+
+ return (
+ /**
+ * @param {number} resolution Resolution.
+ * @return {Array.<ol.style.Style>} Style.
+ * @this {ol.Feature}
+ */
+ function(resolution) {
+ var drawName = showPointNames;
+ /** @type {ol.style.Style|undefined} */
+ var nameStyle;
+ var name = '';
+ if (drawName) {
+ if (this.getGeometry()) {
+ drawName = (this.getGeometry().getType() ===
+ ol.geom.GeometryType.POINT);
+ }
+ }
+
+ if (drawName) {
+ name = /** @type {string} */ (this.get('name'));
+ drawName = drawName && name;
+ }
+
+ if (style) {
+ if (drawName) {
+ nameStyle = ol.format.KML.createNameStyleFunction_(style[0],
+ name);
+ return style.concat(nameStyle);
+ }
+ return style;
+ }
+ if (styleUrl) {
+ var foundStyle = ol.format.KML.findStyle_(styleUrl, defaultStyle,
+ sharedStyles);
+ if (drawName) {
+ nameStyle = ol.format.KML.createNameStyleFunction_(foundStyle[0],
+ name);
+ return foundStyle.concat(nameStyle);
+ }
+ return foundStyle;
+ }
+ if (drawName) {
+ nameStyle = ol.format.KML.createNameStyleFunction_(defaultStyle[0],
+ name);
+ return defaultStyle.concat(nameStyle);
+ }
+ return defaultStyle;
+ });
+};
+
+
+/**
+ * @param {Array.<ol.style.Style>|string|undefined} styleValue Style value.
+ * @param {Array.<ol.style.Style>} defaultStyle Default style.
+ * @param {Object.<string, (Array.<ol.style.Style>|string)>} sharedStyles
+ * Shared styles.
+ * @return {Array.<ol.style.Style>} Style.
+ * @private
+ */
+ol.format.KML.findStyle_ = function(styleValue, defaultStyle, sharedStyles) {
+ if (Array.isArray(styleValue)) {
+ return styleValue;
+ } else if (typeof styleValue === 'string') {
+ // KML files in the wild occasionally forget the leading `#` on styleUrls
+ // defined in the same document. Add a leading `#` if it enables to find
+ // a style.
+ if (!(styleValue in sharedStyles) && ('#' + styleValue in sharedStyles)) {
+ styleValue = '#' + styleValue;
+ }
+ return ol.format.KML.findStyle_(
+ sharedStyles[styleValue], defaultStyle, sharedStyles);
+ } else {
+ return defaultStyle;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {ol.Color|undefined} Color.
+ */
+ol.format.KML.readColor_ = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ // The KML specification states that colors should not include a leading `#`
+ // but we tolerate them.
+ var m = /^\s*#?\s*([0-9A-Fa-f]{8})\s*$/.exec(s);
+ if (m) {
+ var hexColor = m[1];
+ return [
+ parseInt(hexColor.substr(6, 2), 16),
+ parseInt(hexColor.substr(4, 2), 16),
+ parseInt(hexColor.substr(2, 2), 16),
+ parseInt(hexColor.substr(0, 2), 16) / 255
+ ];
+
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {Array.<number>|undefined} Flat coordinates.
+ */
+ol.format.KML.readFlatCoordinates_ = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ var flatCoordinates = [];
+ // The KML specification states that coordinate tuples should not include
+ // spaces, but we tolerate them.
+ var re =
+ /^\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?)\s*,\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?)(?:\s*,\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?))?\s*/i;
+ var m;
+ while ((m = re.exec(s))) {
+ var x = parseFloat(m[1]);
+ var y = parseFloat(m[2]);
+ var z = m[3] ? parseFloat(m[3]) : 0;
+ flatCoordinates.push(x, y, z);
+ s = s.substr(m[0].length);
+ }
+ if (s !== '') {
+ return undefined;
+ }
+ return flatCoordinates;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {string|undefined} Style URL.
+ */
+ol.format.KML.readStyleUrl_ = function(node) {
+ var s = ol.xml.getAllTextContent(node, false).trim();
+ if (node.baseURI) {
+ return goog.Uri.resolve(node.baseURI, s).toString();
+ } else {
+ return s;
+ }
+
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {string} URI.
+ */
+ol.format.KML.readURI_ = function(node) {
+ var s = ol.xml.getAllTextContent(node, false);
+ if (node.baseURI) {
+ return goog.Uri.resolve(node.baseURI, s.trim()).toString();
+ } else {
+ return s.trim();
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {ol.KMLVec2_} Vec2.
+ */
+ol.format.KML.readVec2_ = function(node) {
+ var xunits = node.getAttribute('xunits');
+ var yunits = node.getAttribute('yunits');
+ return {
+ x: parseFloat(node.getAttribute('x')),
+ xunits: ol.format.KML.ICON_ANCHOR_UNITS_MAP_[xunits],
+ y: parseFloat(node.getAttribute('y')),
+ yunits: ol.format.KML.ICON_ANCHOR_UNITS_MAP_[yunits]
+ };
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @private
+ * @return {number|undefined} Scale.
+ */
+ol.format.KML.readScale_ = function(node) {
+ var number = ol.format.XSD.readDecimal(node);
+ if (number !== undefined) {
+ return Math.sqrt(number);
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<ol.style.Style>|string|undefined} StyleMap.
+ */
+ol.format.KML.readStyleMapValue_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop(undefined,
+ ol.format.KML.STYLE_MAP_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.IconStyleParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be an ELEMENT');
+ goog.asserts.assert(node.localName == 'IconStyle',
+ 'localName should be IconStyle');
+ // FIXME refreshMode
+ // FIXME refreshInterval
+ // FIXME viewRefreshTime
+ // FIXME viewBoundScale
+ // FIXME viewFormat
+ // FIXME httpQuery
+ var object = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.ICON_STYLE_PARSERS_, node, objectStack);
+ if (!object) {
+ return;
+ }
+ var styleObject = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(goog.isObject(styleObject),
+ 'styleObject should be an Object');
+ var IconObject = 'Icon' in object ? object['Icon'] : {};
+ var src;
+ var href = /** @type {string|undefined} */
+ (IconObject['href']);
+ if (href) {
+ src = href;
+ } else {
+ src = ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_;
+ }
+ var anchor, anchorXUnits, anchorYUnits;
+ var hotSpot = /** @type {ol.KMLVec2_|undefined} */
+ (object['hotSpot']);
+ if (hotSpot) {
+ anchor = [hotSpot.x, hotSpot.y];
+ anchorXUnits = hotSpot.xunits;
+ anchorYUnits = hotSpot.yunits;
+ } else if (src === ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_) {
+ anchor = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_;
+ anchorXUnits = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_;
+ anchorYUnits = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_;
+ } else if (/^http:\/\/maps\.(?:google|gstatic)\.com\//.test(src)) {
+ anchor = [0.5, 0];
+ anchorXUnits = ol.style.IconAnchorUnits.FRACTION;
+ anchorYUnits = ol.style.IconAnchorUnits.FRACTION;
+ }
+
+ var offset;
+ var x = /** @type {number|undefined} */
+ (IconObject['x']);
+ var y = /** @type {number|undefined} */
+ (IconObject['y']);
+ if (x !== undefined && y !== undefined) {
+ offset = [x, y];
+ }
+
+ var size;
+ var w = /** @type {number|undefined} */
+ (IconObject['w']);
+ var h = /** @type {number|undefined} */
+ (IconObject['h']);
+ if (w !== undefined && h !== undefined) {
+ size = [w, h];
+ }
+
+ var rotation;
+ var heading = /** @type {number} */
+ (object['heading']);
+ if (heading !== undefined) {
+ rotation = ol.math.toRadians(heading);
+ }
+
+ var scale = /** @type {number|undefined} */
+ (object['scale']);
+ if (src == ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_) {
+ size = ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_;
+ if (scale === undefined) {
+ scale = ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_;
+ }
+ }
+
+ var imageStyle = new ol.style.Icon({
+ anchor: anchor,
+ anchorOrigin: ol.style.IconOrigin.BOTTOM_LEFT,
+ anchorXUnits: anchorXUnits,
+ anchorYUnits: anchorYUnits,
+ crossOrigin: 'anonymous', // FIXME should this be configurable?
+ offset: offset,
+ offsetOrigin: ol.style.IconOrigin.BOTTOM_LEFT,
+ rotation: rotation,
+ scale: scale,
+ size: size,
+ src: src
+ });
+ styleObject['imageStyle'] = imageStyle;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.LabelStyleParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LabelStyle',
+ 'localName should be LabelStyle');
+ // FIXME colorMode
+ var object = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.LABEL_STYLE_PARSERS_, node, objectStack);
+ if (!object) {
+ return;
+ }
+ var styleObject = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(styleObject),
+ 'styleObject should be an Object');
+ var textStyle = new ol.style.Text({
+ fill: new ol.style.Fill({
+ color: /** @type {ol.Color} */
+ ('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_)
+ }),
+ scale: /** @type {number|undefined} */
+ (object['scale'])
+ });
+ styleObject['textStyle'] = textStyle;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.LineStyleParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LineStyle',
+ 'localName should be LineStyle');
+ // FIXME colorMode
+ // FIXME gx:outerColor
+ // FIXME gx:outerWidth
+ // FIXME gx:physicalWidth
+ // FIXME gx:labelVisibility
+ var object = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.LINE_STYLE_PARSERS_, node, objectStack);
+ if (!object) {
+ return;
+ }
+ var styleObject = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(styleObject),
+ 'styleObject should be an Object');
+ var strokeStyle = new ol.style.Stroke({
+ color: /** @type {ol.Color} */
+ ('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_),
+ width: /** @type {number} */ ('width' in object ? object['width'] : 1)
+ });
+ styleObject['strokeStyle'] = strokeStyle;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.PolyStyleParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'PolyStyle',
+ 'localName should be PolyStyle');
+ // FIXME colorMode
+ var object = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.POLY_STYLE_PARSERS_, node, objectStack);
+ if (!object) {
+ return;
+ }
+ var styleObject = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(styleObject),
+ 'styleObject should be an Object');
+ var fillStyle = new ol.style.Fill({
+ color: /** @type {ol.Color} */
+ ('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_)
+ });
+ styleObject['fillStyle'] = fillStyle;
+ var fill = /** @type {boolean|undefined} */ (object['fill']);
+ if (fill !== undefined) {
+ styleObject['fill'] = fill;
+ }
+ var outline =
+ /** @type {boolean|undefined} */ (object['outline']);
+ if (outline !== undefined) {
+ styleObject['outline'] = outline;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>} LinearRing flat coordinates.
+ */
+ol.format.KML.readFlatLinearRing_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LinearRing',
+ 'localName should be LinearRing');
+ return ol.xml.pushParseAndPop(null,
+ ol.format.KML.FLAT_LINEAR_RING_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.gxCoordParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(ol.array.includes(
+ ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
+ 'namespaceURI of the node should be known to the KML parser');
+ goog.asserts.assert(node.localName == 'coord', 'localName should be coord');
+ var gxTrackObject = /** @type {ol.KMLGxTrackObject_} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(goog.isObject(gxTrackObject),
+ 'gxTrackObject should be an Object');
+ var flatCoordinates = gxTrackObject.flatCoordinates;
+ var s = ol.xml.getAllTextContent(node, false);
+ var re =
+ /^\s*([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s+([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s+([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s*$/i;
+ var m = re.exec(s);
+ if (m) {
+ var x = parseFloat(m[1]);
+ var y = parseFloat(m[2]);
+ var z = parseFloat(m[3]);
+ flatCoordinates.push(x, y, z, 0);
+ } else {
+ flatCoordinates.push(0, 0, 0, 0);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.MultiLineString|undefined} MultiLineString.
+ */
+ol.format.KML.readGxMultiTrack_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(ol.array.includes(
+ ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
+ 'namespaceURI of the node should be known to the KML parser');
+ goog.asserts.assert(node.localName == 'MultiTrack',
+ 'localName should be MultiTrack');
+ var lineStrings = ol.xml.pushParseAndPop([],
+ ol.format.KML.GX_MULTITRACK_GEOMETRY_PARSERS_, node, objectStack);
+ if (!lineStrings) {
+ return undefined;
+ }
+ var multiLineString = new ol.geom.MultiLineString(null);
+ multiLineString.setLineStrings(lineStrings);
+ return multiLineString;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.LineString|undefined} LineString.
+ */
+ol.format.KML.readGxTrack_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(ol.array.includes(
+ ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
+ 'namespaceURI of the node should be known to the KML parser');
+ goog.asserts.assert(node.localName == 'Track', 'localName should be Track');
+ var gxTrackObject = ol.xml.pushParseAndPop(
+ /** @type {ol.KMLGxTrackObject_} */ ({
+ flatCoordinates: [],
+ whens: []
+ }), ol.format.KML.GX_TRACK_PARSERS_, node, objectStack);
+ if (!gxTrackObject) {
+ return undefined;
+ }
+ var flatCoordinates = gxTrackObject.flatCoordinates;
+ var whens = gxTrackObject.whens;
+ goog.asserts.assert(flatCoordinates.length / 4 == whens.length,
+ 'the length of the flatCoordinates array divided by 4 should be the ' +
+ 'length of the whens array');
+ var i, ii;
+ for (i = 0, ii = Math.min(flatCoordinates.length, whens.length); i < ii;
+ ++i) {
+ flatCoordinates[4 * i + 3] = whens[i];
+ }
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZM, flatCoordinates);
+ return lineString;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object} Icon object.
+ */
+ol.format.KML.readIcon_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Icon', 'localName should be Icon');
+ var iconObject = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.ICON_PARSERS_, node, objectStack);
+ if (iconObject) {
+ return iconObject;
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.format.KML.readFlatCoordinatesFromNode_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return ol.xml.pushParseAndPop(null,
+ ol.format.KML.GEOMETRY_FLAT_COORDINATES_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.LineString|undefined} LineString.
+ */
+ol.format.KML.readLineString_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LineString',
+ 'localName should be LineString');
+ var properties = ol.xml.pushParseAndPop({},
+ ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
+ objectStack);
+ var flatCoordinates =
+ ol.format.KML.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var lineString = new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ lineString.setProperties(properties);
+ return lineString;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.Polygon|undefined} Polygon.
+ */
+ol.format.KML.readLinearRing_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'LinearRing',
+ 'localName should be LinearRing');
+ var properties = ol.xml.pushParseAndPop({},
+ ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
+ objectStack);
+ var flatCoordinates =
+ ol.format.KML.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var polygon = new ol.geom.Polygon(null);
+ polygon.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates,
+ [flatCoordinates.length]);
+ polygon.setProperties(properties);
+ return polygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.KML.readMultiGeometry_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MultiGeometry',
+ 'localName should be MultiGeometry');
+ var geometries = ol.xml.pushParseAndPop([],
+ ol.format.KML.MULTI_GEOMETRY_PARSERS_, node, objectStack);
+ if (!geometries) {
+ return null;
+ }
+ if (geometries.length === 0) {
+ return new ol.geom.GeometryCollection(geometries);
+ }
+ var homogeneous = true;
+ var type = geometries[0].getType();
+ var geometry, i, ii;
+ for (i = 1, ii = geometries.length; i < ii; ++i) {
+ geometry = geometries[i];
+ if (geometry.getType() != type) {
+ homogeneous = false;
+ break;
+ }
+ }
+ if (homogeneous) {
+ var layout;
+ var flatCoordinates;
+ if (type == ol.geom.GeometryType.POINT) {
+ var point = geometries[0];
+ goog.asserts.assertInstanceof(point, ol.geom.Point,
+ 'point should be an ol.geom.Point');
+ layout = point.getLayout();
+ flatCoordinates = point.getFlatCoordinates();
+ for (i = 1, ii = geometries.length; i < ii; ++i) {
+ geometry = geometries[i];
+ goog.asserts.assertInstanceof(geometry, ol.geom.Point,
+ 'geometry should be an ol.geom.Point');
+ goog.asserts.assert(geometry.getLayout() == layout,
+ 'geometry layout should be consistent');
+ ol.array.extend(flatCoordinates, geometry.getFlatCoordinates());
+ }
+ var multiPoint = new ol.geom.MultiPoint(null);
+ multiPoint.setFlatCoordinates(layout, flatCoordinates);
+ ol.format.KML.setCommonGeometryProperties_(multiPoint, geometries);
+ return multiPoint;
+ } else if (type == ol.geom.GeometryType.LINE_STRING) {
+ var multiLineString = new ol.geom.MultiLineString(null);
+ multiLineString.setLineStrings(geometries);
+ ol.format.KML.setCommonGeometryProperties_(multiLineString, geometries);
+ return multiLineString;
+ } else if (type == ol.geom.GeometryType.POLYGON) {
+ var multiPolygon = new ol.geom.MultiPolygon(null);
+ multiPolygon.setPolygons(geometries);
+ ol.format.KML.setCommonGeometryProperties_(multiPolygon, geometries);
+ return multiPolygon;
+ } else if (type == ol.geom.GeometryType.GEOMETRY_COLLECTION) {
+ return new ol.geom.GeometryCollection(geometries);
+ } else {
+ goog.asserts.fail('Unexpected type: ' + type);
+ return null;
+ }
+ } else {
+ return new ol.geom.GeometryCollection(geometries);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.Point|undefined} Point.
+ */
+ol.format.KML.readPoint_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Point', 'localName should be Point');
+ var properties = ol.xml.pushParseAndPop({},
+ ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
+ objectStack);
+ var flatCoordinates =
+ ol.format.KML.readFlatCoordinatesFromNode_(node, objectStack);
+ if (flatCoordinates) {
+ var point = new ol.geom.Point(null);
+ goog.asserts.assert(flatCoordinates.length == 3,
+ 'flatCoordinates should have a length of 3');
+ point.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
+ point.setProperties(properties);
+ return point;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.geom.Polygon|undefined} Polygon.
+ */
+ol.format.KML.readPolygon_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Polygon',
+ 'localName should be Polygon');
+ var properties = ol.xml.pushParseAndPop(/** @type {Object<string,*>} */ ({}),
+ ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
+ objectStack);
+ var flatLinearRings = ol.xml.pushParseAndPop([null],
+ ol.format.KML.FLAT_LINEAR_RINGS_PARSERS_, node, objectStack);
+ if (flatLinearRings && flatLinearRings[0]) {
+ var polygon = new ol.geom.Polygon(null);
+ var flatCoordinates = flatLinearRings[0];
+ var ends = [flatCoordinates.length];
+ var i, ii;
+ for (i = 1, ii = flatLinearRings.length; i < ii; ++i) {
+ ol.array.extend(flatCoordinates, flatLinearRings[i]);
+ ends.push(flatCoordinates.length);
+ }
+ polygon.setFlatCoordinates(
+ ol.geom.GeometryLayout.XYZ, flatCoordinates, ends);
+ polygon.setProperties(properties);
+ return polygon;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<ol.style.Style>} Style.
+ */
+ol.format.KML.readStyle_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Style', 'localName should be Style');
+ var styleObject = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.STYLE_PARSERS_, node, objectStack);
+ if (!styleObject) {
+ return null;
+ }
+ var fillStyle = /** @type {ol.style.Fill} */
+ ('fillStyle' in styleObject ?
+ styleObject['fillStyle'] : ol.format.KML.DEFAULT_FILL_STYLE_);
+ var fill = /** @type {boolean|undefined} */ (styleObject['fill']);
+ if (fill !== undefined && !fill) {
+ fillStyle = null;
+ }
+ var imageStyle = /** @type {ol.style.Image} */
+ ('imageStyle' in styleObject ?
+ styleObject['imageStyle'] : ol.format.KML.DEFAULT_IMAGE_STYLE_);
+ var textStyle = /** @type {ol.style.Text} */
+ ('textStyle' in styleObject ?
+ styleObject['textStyle'] : ol.format.KML.DEFAULT_TEXT_STYLE_);
+ var strokeStyle = /** @type {ol.style.Stroke} */
+ ('strokeStyle' in styleObject ?
+ styleObject['strokeStyle'] : ol.format.KML.DEFAULT_STROKE_STYLE_);
+ var outline = /** @type {boolean|undefined} */
+ (styleObject['outline']);
+ if (outline !== undefined && !outline) {
+ strokeStyle = null;
+ }
+ return [new ol.style.Style({
+ fill: fillStyle,
+ image: imageStyle,
+ stroke: strokeStyle,
+ text: textStyle,
+ zIndex: undefined // FIXME
+ })];
+};
+
+
+/**
+ * Reads an array of geometries and creates arrays for common geometry
+ * properties. Then sets them to the multi geometry.
+ * @param {ol.geom.MultiPoint|ol.geom.MultiLineString|ol.geom.MultiPolygon}
+ * multiGeometry A multi-geometry.
+ * @param {Array.<ol.geom.Geometry>} geometries List of geometries.
+ * @private
+ */
+ol.format.KML.setCommonGeometryProperties_ = function(multiGeometry,
+ geometries) {
+ var ii = geometries.length;
+ var extrudes = new Array(geometries.length);
+ var altitudeModes = new Array(geometries.length);
+ var geometry, i, hasExtrude, hasAltitudeMode;
+ hasExtrude = hasAltitudeMode = false;
+ for (i = 0; i < ii; ++i) {
+ geometry = geometries[i];
+ extrudes[i] = geometry.get('extrude');
+ altitudeModes[i] = geometry.get('altitudeMode');
+ hasExtrude = hasExtrude || extrudes[i] !== undefined;
+ hasAltitudeMode = hasAltitudeMode || altitudeModes[i];
+ }
+ if (hasExtrude) {
+ multiGeometry.set('extrude', extrudes);
+ }
+ if (hasAltitudeMode) {
+ multiGeometry.set('altitudeMode', altitudeModes);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.DataParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Data', 'localName should be Data');
+ var name = node.getAttribute('name');
+ if (name !== null) {
+ var data = ol.xml.pushParseAndPop(
+ undefined, ol.format.KML.DATA_PARSERS_, node, objectStack);
+ if (data) {
+ var featureObject =
+ /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(goog.isObject(featureObject),
+ 'featureObject should be an Object');
+ featureObject[name] = data;
+ }
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.ExtendedDataParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ExtendedData',
+ 'localName should be ExtendedData');
+ ol.xml.parseNode(ol.format.KML.EXTENDED_DATA_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.PairDataParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Pair', 'localName should be Pair');
+ var pairObject = ol.xml.pushParseAndPop(
+ {}, ol.format.KML.PAIR_PARSERS_, node, objectStack);
+ if (!pairObject) {
+ return;
+ }
+ var key = /** @type {string|undefined} */
+ (pairObject['key']);
+ if (key && key == 'normal') {
+ var styleUrl = /** @type {string|undefined} */
+ (pairObject['styleUrl']);
+ if (styleUrl) {
+ objectStack[objectStack.length - 1] = styleUrl;
+ }
+ var Style = /** @type {ol.style.Style} */
+ (pairObject['Style']);
+ if (Style) {
+ objectStack[objectStack.length - 1] = Style;
+ }
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.PlacemarkStyleMapParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'StyleMap',
+ 'localName should be StyleMap');
+ var styleMapValue = ol.format.KML.readStyleMapValue_(node, objectStack);
+ if (!styleMapValue) {
+ return;
+ }
+ var placemarkObject = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(placemarkObject),
+ 'placemarkObject should be an Object');
+ if (Array.isArray(styleMapValue)) {
+ placemarkObject['Style'] = styleMapValue;
+ } else if (typeof styleMapValue === 'string') {
+ placemarkObject['styleUrl'] = styleMapValue;
+ } else {
+ goog.asserts.fail('styleMapValue has an unknown type');
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.SchemaDataParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'SchemaData',
+ 'localName should be SchemaData');
+ ol.xml.parseNode(ol.format.KML.SCHEMA_DATA_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.SimpleDataParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'SimpleData',
+ 'localName should be SimpleData');
+ var name = node.getAttribute('name');
+ if (name !== null) {
+ var data = ol.format.XSD.readString(node);
+ var featureObject =
+ /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ featureObject[name] = data;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.innerBoundaryIsParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'innerBoundaryIs',
+ 'localName should be innerBoundaryIs');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ ol.format.KML.INNER_BOUNDARY_IS_PARSERS_, node, objectStack);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings array should not be empty');
+ flatLinearRings.push(flatLinearRing);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.outerBoundaryIsParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'outerBoundaryIs',
+ 'localName should be outerBoundaryIs');
+ /** @type {Array.<number>|undefined} */
+ var flatLinearRing = ol.xml.pushParseAndPop(undefined,
+ ol.format.KML.OUTER_BOUNDARY_IS_PARSERS_, node, objectStack);
+ if (flatLinearRing) {
+ var flatLinearRings = /** @type {Array.<Array.<number>>} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(Array.isArray(flatLinearRings),
+ 'flatLinearRings should be an array');
+ goog.asserts.assert(flatLinearRings.length > 0,
+ 'flatLinearRings array should not be empty');
+ flatLinearRings[0] = flatLinearRing;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.LinkParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Link', 'localName should be Link');
+ ol.xml.parseNode(ol.format.KML.LINK_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.whenParser_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'when', 'localName should be when');
+ var gxTrackObject = /** @type {ol.KMLGxTrackObject_} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(goog.isObject(gxTrackObject),
+ 'gxTrackObject should be an Object');
+ var whens = gxTrackObject.whens;
+ var s = ol.xml.getAllTextContent(node, false);
+ var re =
+ /^\s*(\d{4})($|-(\d{2})($|-(\d{2})($|T(\d{2}):(\d{2}):(\d{2})(Z|(?:([+\-])(\d{2})(?::(\d{2}))?)))))\s*$/;
+ var m = re.exec(s);
+ if (m) {
+ var year = parseInt(m[1], 10);
+ var month = m[3] ? parseInt(m[3], 10) - 1 : 0;
+ var day = m[5] ? parseInt(m[5], 10) : 1;
+ var hour = m[7] ? parseInt(m[7], 10) : 0;
+ var minute = m[8] ? parseInt(m[8], 10) : 0;
+ var second = m[9] ? parseInt(m[9], 10) : 0;
+ var when = Date.UTC(year, month, day, hour, minute, second);
+ if (m[10] && m[10] != 'Z') {
+ var sign = m[11] == '-' ? -1 : 1;
+ when += sign * 60 * parseInt(m[12], 10);
+ if (m[13]) {
+ when += sign * 60 * 60 * parseInt(m[13], 10);
+ }
+ }
+ whens.push(when);
+ } else {
+ whens.push(0);
+ }
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.DATA_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'value': ol.xml.makeReplacer(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.EXTENDED_DATA_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Data': ol.format.KML.DataParser_,
+ 'SchemaData': ol.format.KML.SchemaDataParser_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'extrude': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean),
+ 'altitudeMode': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.FLAT_LINEAR_RING_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'coordinates': ol.xml.makeReplacer(ol.format.KML.readFlatCoordinates_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.FLAT_LINEAR_RINGS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'innerBoundaryIs': ol.format.KML.innerBoundaryIsParser_,
+ 'outerBoundaryIs': ol.format.KML.outerBoundaryIsParser_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.GX_TRACK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'when': ol.format.KML.whenParser_
+ }, ol.xml.makeStructureNS(
+ ol.format.KML.GX_NAMESPACE_URIS_, {
+ 'coord': ol.format.KML.gxCoordParser_
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.GEOMETRY_FLAT_COORDINATES_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'coordinates': ol.xml.makeReplacer(ol.format.KML.readFlatCoordinates_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.ICON_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'href': ol.xml.makeObjectPropertySetter(ol.format.KML.readURI_)
+ }, ol.xml.makeStructureNS(
+ ol.format.KML.GX_NAMESPACE_URIS_, {
+ 'x': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'y': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'w': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'h': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.ICON_STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Icon': ol.xml.makeObjectPropertySetter(ol.format.KML.readIcon_),
+ 'heading': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal),
+ 'hotSpot': ol.xml.makeObjectPropertySetter(ol.format.KML.readVec2_),
+ 'scale': ol.xml.makeObjectPropertySetter(ol.format.KML.readScale_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.INNER_BOUNDARY_IS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'LinearRing': ol.xml.makeReplacer(ol.format.KML.readFlatLinearRing_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.LABEL_STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeObjectPropertySetter(ol.format.KML.readColor_),
+ 'scale': ol.xml.makeObjectPropertySetter(ol.format.KML.readScale_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.LINE_STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeObjectPropertySetter(ol.format.KML.readColor_),
+ 'width': ol.xml.makeObjectPropertySetter(ol.format.XSD.readDecimal)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.MULTI_GEOMETRY_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'LineString': ol.xml.makeArrayPusher(ol.format.KML.readLineString_),
+ 'LinearRing': ol.xml.makeArrayPusher(ol.format.KML.readLinearRing_),
+ 'MultiGeometry': ol.xml.makeArrayPusher(ol.format.KML.readMultiGeometry_),
+ 'Point': ol.xml.makeArrayPusher(ol.format.KML.readPoint_),
+ 'Polygon': ol.xml.makeArrayPusher(ol.format.KML.readPolygon_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.GX_MULTITRACK_GEOMETRY_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.GX_NAMESPACE_URIS_, {
+ 'Track': ol.xml.makeArrayPusher(ol.format.KML.readGxTrack_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.NETWORK_LINK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'ExtendedData': ol.format.KML.ExtendedDataParser_,
+ 'Link': ol.format.KML.LinkParser_,
+ 'address': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'description': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'open': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean),
+ 'phoneNumber': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'visibility': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.LINK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'href': ol.xml.makeObjectPropertySetter(ol.format.KML.readURI_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.OUTER_BOUNDARY_IS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'LinearRing': ol.xml.makeReplacer(ol.format.KML.readFlatLinearRing_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.PAIR_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Style': ol.xml.makeObjectPropertySetter(ol.format.KML.readStyle_),
+ 'key': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'styleUrl': ol.xml.makeObjectPropertySetter(ol.format.KML.readStyleUrl_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.PLACEMARK_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'ExtendedData': ol.format.KML.ExtendedDataParser_,
+ 'MultiGeometry': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readMultiGeometry_, 'geometry'),
+ 'LineString': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readLineString_, 'geometry'),
+ 'LinearRing': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readLinearRing_, 'geometry'),
+ 'Point': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readPoint_, 'geometry'),
+ 'Polygon': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readPolygon_, 'geometry'),
+ 'Style': ol.xml.makeObjectPropertySetter(ol.format.KML.readStyle_),
+ 'StyleMap': ol.format.KML.PlacemarkStyleMapParser_,
+ 'address': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'description': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'open': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean),
+ 'phoneNumber': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'styleUrl': ol.xml.makeObjectPropertySetter(ol.format.KML.readURI_),
+ 'visibility': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean)
+ }, ol.xml.makeStructureNS(
+ ol.format.KML.GX_NAMESPACE_URIS_, {
+ 'MultiTrack': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readGxMultiTrack_, 'geometry'),
+ 'Track': ol.xml.makeObjectPropertySetter(
+ ol.format.KML.readGxTrack_, 'geometry')
+ }
+ ));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.POLY_STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeObjectPropertySetter(ol.format.KML.readColor_),
+ 'fill': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean),
+ 'outline': ol.xml.makeObjectPropertySetter(ol.format.XSD.readBoolean)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.SCHEMA_DATA_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'SimpleData': ol.format.KML.SimpleDataParser_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'IconStyle': ol.format.KML.IconStyleParser_,
+ 'LabelStyle': ol.format.KML.LabelStyleParser_,
+ 'LineStyle': ol.format.KML.LineStyleParser_,
+ 'PolyStyle': ol.format.KML.PolyStyleParser_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.KML.STYLE_MAP_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Pair': ol.format.KML.PairDataParser_
+ });
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.KML.prototype.getExtensions = function() {
+ return ol.format.KML.EXTENSIONS_;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<ol.Feature>|undefined} Features.
+ */
+ol.format.KML.prototype.readDocumentOrFolder_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var localName = node.localName;
+ goog.asserts.assert(localName == 'Document' || localName == 'Folder',
+ 'localName should be Document or Folder');
+ // FIXME use scope somehow
+ var parsersNS = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Document': ol.xml.makeArrayExtender(this.readDocumentOrFolder_, this),
+ 'Folder': ol.xml.makeArrayExtender(this.readDocumentOrFolder_, this),
+ 'Placemark': ol.xml.makeArrayPusher(this.readPlacemark_, this),
+ 'Style': this.readSharedStyle_.bind(this),
+ 'StyleMap': this.readSharedStyleMap_.bind(this)
+ });
+ /** @type {Array.<ol.Feature>} */
+ var features = ol.xml.pushParseAndPop([], parsersNS, node, objectStack, this);
+ if (features) {
+ return features;
+ } else {
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {ol.Feature|undefined} Feature.
+ */
+ol.format.KML.prototype.readPlacemark_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Placemark',
+ 'localName should be Placemark');
+ var object = ol.xml.pushParseAndPop({'geometry': null},
+ ol.format.KML.PLACEMARK_PARSERS_, node, objectStack);
+ if (!object) {
+ return undefined;
+ }
+ var feature = new ol.Feature();
+ var id = node.getAttribute('id');
+ if (id !== null) {
+ feature.setId(id);
+ }
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+
+ var geometry = object['geometry'];
+ if (geometry) {
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ }
+ feature.setGeometry(geometry);
+ delete object['geometry'];
+
+ if (this.extractStyles_) {
+ var style = object['Style'];
+ var styleUrl = object['styleUrl'];
+ var styleFunction = ol.format.KML.createFeatureStyleFunction_(
+ style, styleUrl, this.defaultStyle_, this.sharedStyles_,
+ this.showPointNames_);
+ feature.setStyle(styleFunction);
+ }
+ delete object['Style'];
+ // we do not remove the styleUrl property from the object, so it
+ // gets stored on feature when setProperties is called
+
+ feature.setProperties(object);
+
+ return feature;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.prototype.readSharedStyle_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Style', 'localName should be Style');
+ var id = node.getAttribute('id');
+ if (id !== null) {
+ var style = ol.format.KML.readStyle_(node, objectStack);
+ if (style) {
+ var styleUri;
+ if (node.baseURI) {
+ styleUri = goog.Uri.resolve(node.baseURI, '#' + id).toString();
+ } else {
+ styleUri = '#' + id;
+ }
+ this.sharedStyles_[styleUri] = style;
+ }
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.prototype.readSharedStyleMap_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'StyleMap',
+ 'localName should be StyleMap');
+ var id = node.getAttribute('id');
+ if (id === null) {
+ return;
+ }
+ var styleMapValue = ol.format.KML.readStyleMapValue_(node, objectStack);
+ if (!styleMapValue) {
+ return;
+ }
+ var styleUri;
+ if (node.baseURI) {
+ styleUri = goog.Uri.resolve(node.baseURI, '#' + id).toString();
+ } else {
+ styleUri = '#' + id;
+ }
+ this.sharedStyles_[styleUri] = styleMapValue;
+};
+
+
+/**
+ * Read the first feature from a KML source. MultiGeometries are converted into
+ * GeometryCollections if they are a mix of geometry types, and into MultiPoint/
+ * MultiLineString/MultiPolygon if they are all of the same type.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api stable
+ */
+ol.format.KML.prototype.readFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.KML.prototype.readFeatureFromNode = function(node, opt_options) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ if (!ol.array.includes(ol.format.KML.NAMESPACE_URIS_, node.namespaceURI)) {
+ return null;
+ }
+ goog.asserts.assert(node.localName == 'Placemark',
+ 'localName should be Placemark');
+ var feature = this.readPlacemark_(
+ node, [this.getReadOptions(node, opt_options)]);
+ if (feature) {
+ return feature;
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * Read all features from a KML source. MultiGeometries are converted into
+ * GeometryCollections if they are a mix of geometry types, and into MultiPoint/
+ * MultiLineString/MultiPolygon if they are all of the same type.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.KML.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.KML.prototype.readFeaturesFromNode = function(node, opt_options) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ if (!ol.array.includes(ol.format.KML.NAMESPACE_URIS_, node.namespaceURI)) {
+ return [];
+ }
+ var features;
+ var localName = node.localName;
+ if (localName == 'Document' || localName == 'Folder') {
+ features = this.readDocumentOrFolder_(
+ node, [this.getReadOptions(node, opt_options)]);
+ if (features) {
+ return features;
+ } else {
+ return [];
+ }
+ } else if (localName == 'Placemark') {
+ var feature = this.readPlacemark_(
+ node, [this.getReadOptions(node, opt_options)]);
+ if (feature) {
+ return [feature];
+ } else {
+ return [];
+ }
+ } else if (localName == 'kml') {
+ features = [];
+ var n;
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ var fs = this.readFeaturesFromNode(n, opt_options);
+ if (fs) {
+ ol.array.extend(features, fs);
+ }
+ }
+ return features;
+ } else {
+ return [];
+ }
+};
+
+
+/**
+ * Read the name of the KML.
+ *
+ * @param {Document|Node|string} source Souce.
+ * @return {string|undefined} Name.
+ * @api stable
+ */
+ol.format.KML.prototype.readName = function(source) {
+ if (ol.xml.isDocument(source)) {
+ return this.readNameFromDocument(/** @type {Document} */ (source));
+ } else if (ol.xml.isNode(source)) {
+ return this.readNameFromNode(/** @type {Node} */ (source));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readNameFromDocument(doc);
+ } else {
+ goog.asserts.fail('Unknown type for source');
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {string|undefined} Name.
+ */
+ol.format.KML.prototype.readNameFromDocument = function(doc) {
+ var n;
+ for (n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ var name = this.readNameFromNode(n);
+ if (name) {
+ return name;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {string|undefined} Name.
+ */
+ol.format.KML.prototype.readNameFromNode = function(node) {
+ var n;
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ if (ol.array.includes(ol.format.KML.NAMESPACE_URIS_, n.namespaceURI) &&
+ n.localName == 'name') {
+ return ol.format.XSD.readString(n);
+ }
+ }
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ var localName = n.localName;
+ if (ol.array.includes(ol.format.KML.NAMESPACE_URIS_, n.namespaceURI) &&
+ (localName == 'Document' ||
+ localName == 'Folder' ||
+ localName == 'Placemark' ||
+ localName == 'kml')) {
+ var name = this.readNameFromNode(n);
+ if (name) {
+ return name;
+ }
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * Read the network links of the KML.
+ *
+ * @param {Document|Node|string} source Source.
+ * @return {Array.<Object>} Network links.
+ * @api
+ */
+ol.format.KML.prototype.readNetworkLinks = function(source) {
+ var networkLinks = [];
+ if (ol.xml.isDocument(source)) {
+ ol.array.extend(networkLinks, this.readNetworkLinksFromDocument(
+ /** @type {Document} */ (source)));
+ } else if (ol.xml.isNode(source)) {
+ ol.array.extend(networkLinks, this.readNetworkLinksFromNode(
+ /** @type {Node} */ (source)));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ ol.array.extend(networkLinks, this.readNetworkLinksFromDocument(doc));
+ } else {
+ goog.asserts.fail('unknown type for source');
+ }
+ return networkLinks;
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {Array.<Object>} Network links.
+ */
+ol.format.KML.prototype.readNetworkLinksFromDocument = function(doc) {
+ var n, networkLinks = [];
+ for (n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ ol.array.extend(networkLinks, this.readNetworkLinksFromNode(n));
+ }
+ }
+ return networkLinks;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {Array.<Object>} Network links.
+ */
+ol.format.KML.prototype.readNetworkLinksFromNode = function(node) {
+ var n, networkLinks = [];
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ if (ol.array.includes(ol.format.KML.NAMESPACE_URIS_, n.namespaceURI) &&
+ n.localName == 'NetworkLink') {
+ var obj = ol.xml.pushParseAndPop({}, ol.format.KML.NETWORK_LINK_PARSERS_,
+ n, []);
+ networkLinks.push(obj);
+ }
+ }
+ for (n = node.firstElementChild; n; n = n.nextElementSibling) {
+ var localName = n.localName;
+ if (ol.array.includes(ol.format.KML.NAMESPACE_URIS_, n.namespaceURI) &&
+ (localName == 'Document' ||
+ localName == 'Folder' ||
+ localName == 'kml')) {
+ ol.array.extend(networkLinks, this.readNetworkLinksFromNode(n));
+ }
+ }
+ return networkLinks;
+};
+
+
+/**
+ * Read the projection from a KML source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.KML.prototype.readProjection;
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the color to.
+ * @param {ol.Color|string} color Color.
+ * @private
+ */
+ol.format.KML.writeColorTextNode_ = function(node, color) {
+ var rgba = ol.color.asArray(color);
+ var opacity = (rgba.length == 4) ? rgba[3] : 1;
+ var abgr = [opacity * 255, rgba[2], rgba[1], rgba[0]];
+ var i;
+ for (i = 0; i < 4; ++i) {
+ var hex = parseInt(abgr[i], 10).toString(16);
+ abgr[i] = (hex.length == 1) ? '0' + hex : hex;
+ }
+ ol.format.XSD.writeStringTextNode(node, abgr.join(''));
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the coordinates to.
+ * @param {Array.<number>} coordinates Coordinates.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeCoordinatesTextNode_ = function(node, coordinates, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+
+ var layout = context['layout'];
+ var stride = context['stride'];
+
+ var dimension;
+ if (layout == ol.geom.GeometryLayout.XY ||
+ layout == ol.geom.GeometryLayout.XYM) {
+ dimension = 2;
+ } else if (layout == ol.geom.GeometryLayout.XYZ ||
+ layout == ol.geom.GeometryLayout.XYZM) {
+ dimension = 3;
+ } else {
+ goog.asserts.fail('Unknown geometry layout');
+ }
+
+ var d, i;
+ var ii = coordinates.length;
+ var text = '';
+ if (ii > 0) {
+ text += coordinates[0];
+ for (d = 1; d < dimension; ++d) {
+ text += ',' + coordinates[d];
+ }
+ for (i = stride; i < ii; i += stride) {
+ text += ' ' + coordinates[i];
+ for (d = 1; d < dimension; ++d) {
+ text += ',' + coordinates[i + d];
+ }
+ }
+ }
+ ol.format.XSD.writeStringTextNode(node, text);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {Array.<*>} objectStack Object stack.
+ * @this {ol.format.KML}
+ * @private
+ */
+ol.format.KML.writeDocument_ = function(node, features, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.DOCUMENT_SERIALIZERS_,
+ ol.format.KML.DOCUMENT_NODE_FACTORY_, features, objectStack, undefined,
+ this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Object} icon Icon object.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeIcon_ = function(node, icon, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.KML.ICON_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(icon, orderedKeys);
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.ICON_SERIALIZERS_, ol.xml.OBJECT_PROPERTY_NODE_FACTORY,
+ values, objectStack, orderedKeys);
+ orderedKeys =
+ ol.format.KML.ICON_SEQUENCE_[ol.format.KML.GX_NAMESPACE_URIS_[0]];
+ values = ol.xml.makeSequence(icon, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.ICON_SERIALIZERS_,
+ ol.format.KML.GX_NODE_FACTORY_, values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.style.Icon} style Icon style.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeIconStyle_ = function(node, style, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ var properties = {};
+ var src = style.getSrc();
+ var size = style.getSize();
+ var iconImageSize = style.getImageSize();
+ var iconProperties = {
+ 'href': src
+ };
+
+ if (size) {
+ iconProperties['w'] = size[0];
+ iconProperties['h'] = size[1];
+ var anchor = style.getAnchor(); // top-left
+ var origin = style.getOrigin(); // top-left
+
+ if (origin && iconImageSize && origin[0] !== 0 && origin[1] !== size[1]) {
+ iconProperties['x'] = origin[0];
+ iconProperties['y'] = iconImageSize[1] - (origin[1] + size[1]);
+ }
+
+ if (anchor && anchor[0] !== 0 && anchor[1] !== size[1]) {
+ var /** @type {ol.KMLVec2_} */ hotSpot = {
+ x: anchor[0],
+ xunits: ol.style.IconAnchorUnits.PIXELS,
+ y: size[1] - anchor[1],
+ yunits: ol.style.IconAnchorUnits.PIXELS
+ };
+ properties['hotSpot'] = hotSpot;
+ }
+ }
+
+ properties['Icon'] = iconProperties;
+
+ var scale = style.getScale();
+ if (scale !== 1) {
+ properties['scale'] = scale;
+ }
+
+ var rotation = style.getRotation();
+ if (rotation !== 0) {
+ properties['heading'] = rotation; // 0-360
+ }
+
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.KML.ICON_STYLE_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.ICON_STYLE_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.style.Text} style style.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeLabelStyle_ = function(node, style, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ var properties = {};
+ var fill = style.getFill();
+ if (fill) {
+ properties['color'] = fill.getColor();
+ }
+ var scale = style.getScale();
+ if (scale && scale !== 1) {
+ properties['scale'] = scale;
+ }
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys =
+ ol.format.KML.LABEL_STYLE_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.LABEL_STYLE_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.style.Stroke} style style.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeLineStyle_ = function(node, style, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ var properties = {
+ 'color': style.getColor(),
+ 'width': style.getWidth()
+ };
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.KML.LINE_STYLE_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.LINE_STYLE_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeMultiGeometry_ = function(node, geometry, objectStack) {
+ goog.asserts.assert(
+ (geometry instanceof ol.geom.GeometryCollection) ||
+ (geometry instanceof ol.geom.MultiPoint) ||
+ (geometry instanceof ol.geom.MultiLineString) ||
+ (geometry instanceof ol.geom.MultiPolygon),
+ 'geometry should be one of: ol.geom.GeometryCollection, ' +
+ 'ol.geom.MultiPoint, ol.geom.MultiLineString or ol.geom.MultiPolygon');
+ /** @type {ol.XmlNodeStackItem} */
+ var context = {node: node};
+ var type = geometry.getType();
+ /** @type {Array.<ol.geom.Geometry>} */
+ var geometries;
+ /** @type {function(*, Array.<*>, string=): (Node|undefined)} */
+ var factory;
+ if (type == ol.geom.GeometryType.GEOMETRY_COLLECTION) {
+ geometries = geometry.getGeometries();
+ factory = ol.format.KML.GEOMETRY_NODE_FACTORY_;
+ } else if (type == ol.geom.GeometryType.MULTI_POINT) {
+ geometries =
+ (/** @type {ol.geom.MultiPoint} */ (geometry)).getPoints();
+ factory = ol.format.KML.POINT_NODE_FACTORY_;
+ } else if (type == ol.geom.GeometryType.MULTI_LINE_STRING) {
+ geometries =
+ (/** @type {ol.geom.MultiLineString} */ (geometry)).getLineStrings();
+ factory = ol.format.KML.LINE_STRING_NODE_FACTORY_;
+ } else if (type == ol.geom.GeometryType.MULTI_POLYGON) {
+ geometries =
+ (/** @type {ol.geom.MultiPolygon} */ (geometry)).getPolygons();
+ factory = ol.format.KML.POLYGON_NODE_FACTORY_;
+ } else {
+ goog.asserts.fail('Unknown geometry type: ' + type);
+ }
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.MULTI_GEOMETRY_SERIALIZERS_, factory,
+ geometries, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.LinearRing} linearRing Linear ring.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeBoundaryIs_ = function(node, linearRing, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.BOUNDARY_IS_SERIALIZERS_,
+ ol.format.KML.LINEAR_RING_NODE_FACTORY_, [linearRing], objectStack);
+};
+
+
+/**
+ * FIXME currently we do serialize arbitrary/custom feature properties
+ * (ExtendedData).
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Object stack.
+ * @this {ol.format.KML}
+ * @private
+ */
+ol.format.KML.writePlacemark_ = function(node, feature, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+
+ // set id
+ if (feature.getId()) {
+ node.setAttribute('id', feature.getId());
+ }
+
+ // serialize properties (properties unknown to KML are not serialized)
+ var properties = feature.getProperties();
+
+ var styleFunction = feature.getStyleFunction();
+ if (styleFunction) {
+ // FIXME the styles returned by the style function are supposed to be
+ // resolution-independent here
+ var styles = styleFunction.call(feature, 0);
+ if (styles) {
+ var style = Array.isArray(styles) ? styles[0] : styles;
+ if (this.writeStyles_) {
+ properties['Style'] = style;
+ }
+ var textStyle = style.getText();
+ if (textStyle) {
+ properties['name'] = textStyle.getText();
+ }
+ }
+ }
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.KML.PLACEMARK_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.PLACEMARK_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, objectStack, orderedKeys);
+
+ // serialize geometry
+ var options = /** @type {olx.format.WriteOptions} */ (objectStack[0]);
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ geometry =
+ ol.format.Feature.transformWithOptions(geometry, true, options);
+ }
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.PLACEMARK_SERIALIZERS_,
+ ol.format.KML.GEOMETRY_NODE_FACTORY_, [geometry], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.SimpleGeometry} geometry Geometry.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writePrimitiveGeometry_ = function(node, geometry, objectStack) {
+ goog.asserts.assert(
+ (geometry instanceof ol.geom.Point) ||
+ (geometry instanceof ol.geom.LineString) ||
+ (geometry instanceof ol.geom.LinearRing),
+ 'geometry should be one of ol.geom.Point, ol.geom.LineString ' +
+ 'or ol.geom.LinearRing');
+ var flatCoordinates = geometry.getFlatCoordinates();
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ context['layout'] = geometry.getLayout();
+ context['stride'] = geometry.getStride();
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.PRIMITIVE_GEOMETRY_SERIALIZERS_,
+ ol.format.KML.COORDINATES_NODE_FACTORY_,
+ [flatCoordinates], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Polygon} polygon Polygon.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writePolygon_ = function(node, polygon, objectStack) {
+ goog.asserts.assertInstanceof(polygon, ol.geom.Polygon,
+ 'polygon should be an ol.geom.Polygon');
+ var linearRings = polygon.getLinearRings();
+ goog.asserts.assert(linearRings.length > 0,
+ 'linearRings should not be empty');
+ var outerRing = linearRings.shift();
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ // inner rings
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.POLYGON_SERIALIZERS_,
+ ol.format.KML.INNER_BOUNDARY_NODE_FACTORY_,
+ linearRings, objectStack);
+ // outer ring
+ ol.xml.pushSerializeAndPop(context,
+ ol.format.KML.POLYGON_SERIALIZERS_,
+ ol.format.KML.OUTER_BOUNDARY_NODE_FACTORY_,
+ [outerRing], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.style.Fill} style Style.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writePolyStyle_ = function(node, style, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.POLY_STYLE_SERIALIZERS_,
+ ol.format.KML.COLOR_NODE_FACTORY_, [style.getColor()], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the scale to.
+ * @param {number|undefined} scale Scale.
+ * @private
+ */
+ol.format.KML.writeScaleTextNode_ = function(node, scale) {
+ // the Math is to remove any excess decimals created by float arithmetic
+ ol.format.XSD.writeDecimalTextNode(node,
+ Math.round(scale * scale * 1e6) / 1e6);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.style.Style} style Style.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.KML.writeStyle_ = function(node, style, objectStack) {
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: node};
+ var properties = {};
+ var fillStyle = style.getFill();
+ var strokeStyle = style.getStroke();
+ var imageStyle = style.getImage();
+ var textStyle = style.getText();
+ if (imageStyle instanceof ol.style.Icon) {
+ properties['IconStyle'] = imageStyle;
+ }
+ if (textStyle) {
+ properties['LabelStyle'] = textStyle;
+ }
+ if (strokeStyle) {
+ properties['LineStyle'] = strokeStyle;
+ }
+ if (fillStyle) {
+ properties['PolyStyle'] = fillStyle;
+ }
+ var parentNode = objectStack[objectStack.length - 1].node;
+ var orderedKeys = ol.format.KML.STYLE_SEQUENCE_[parentNode.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.STYLE_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, objectStack, orderedKeys);
+};
+
+
+/**
+ * @param {Node} node Node to append a TextNode with the Vec2 to.
+ * @param {ol.KMLVec2_} vec2 Vec2.
+ * @private
+ */
+ol.format.KML.writeVec2_ = function(node, vec2) {
+ node.setAttribute('x', vec2.x);
+ node.setAttribute('y', vec2.y);
+ node.setAttribute('xunits', vec2.xunits);
+ node.setAttribute('yunits', vec2.yunits);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.KML_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'Document', 'Placemark'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.KML_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Document': ol.xml.makeChildAppender(ol.format.KML.writeDocument_),
+ 'Placemark': ol.xml.makeChildAppender(ol.format.KML.writePlacemark_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.DOCUMENT_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Placemark': ol.xml.makeChildAppender(ol.format.KML.writePlacemark_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, string>}
+ * @private
+ */
+ol.format.KML.GEOMETRY_TYPE_TO_NODENAME_ = {
+ 'Point': 'Point',
+ 'LineString': 'LineString',
+ 'LinearRing': 'LinearRing',
+ 'Polygon': 'Polygon',
+ 'MultiPoint': 'MultiGeometry',
+ 'MultiLineString': 'MultiGeometry',
+ 'MultiPolygon': 'MultiGeometry',
+ 'GeometryCollection': 'MultiGeometry'
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.ICON_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'href'
+ ],
+ ol.xml.makeStructureNS(ol.format.KML.GX_NAMESPACE_URIS_, [
+ 'x', 'y', 'w', 'h'
+ ]));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.ICON_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'href': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode)
+ }, ol.xml.makeStructureNS(
+ ol.format.KML.GX_NAMESPACE_URIS_, {
+ 'x': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'y': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'w': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'h': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.ICON_STYLE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'scale', 'heading', 'Icon', 'hotSpot'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.ICON_STYLE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'Icon': ol.xml.makeChildAppender(ol.format.KML.writeIcon_),
+ 'heading': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode),
+ 'hotSpot': ol.xml.makeChildAppender(ol.format.KML.writeVec2_),
+ 'scale': ol.xml.makeChildAppender(ol.format.KML.writeScaleTextNode_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.LABEL_STYLE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'color', 'scale'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.LABEL_STYLE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeChildAppender(ol.format.KML.writeColorTextNode_),
+ 'scale': ol.xml.makeChildAppender(ol.format.KML.writeScaleTextNode_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.LINE_STYLE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'color', 'width'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.LINE_STYLE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeChildAppender(ol.format.KML.writeColorTextNode_),
+ 'width': ol.xml.makeChildAppender(ol.format.XSD.writeDecimalTextNode)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.BOUNDARY_IS_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'LinearRing': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.MULTI_GEOMETRY_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'LineString': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_),
+ 'Point': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_),
+ 'Polygon': ol.xml.makeChildAppender(ol.format.KML.writePolygon_),
+ 'GeometryCollection': ol.xml.makeChildAppender(
+ ol.format.KML.writeMultiGeometry_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.PLACEMARK_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'name', 'open', 'visibility', 'address', 'phoneNumber', 'description',
+ 'styleUrl', 'Style'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.PLACEMARK_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'MultiGeometry': ol.xml.makeChildAppender(
+ ol.format.KML.writeMultiGeometry_),
+ 'LineString': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_),
+ 'LinearRing': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_),
+ 'Point': ol.xml.makeChildAppender(
+ ol.format.KML.writePrimitiveGeometry_),
+ 'Polygon': ol.xml.makeChildAppender(ol.format.KML.writePolygon_),
+ 'Style': ol.xml.makeChildAppender(ol.format.KML.writeStyle_),
+ 'address': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'description': ol.xml.makeChildAppender(
+ ol.format.XSD.writeStringTextNode),
+ 'name': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'open': ol.xml.makeChildAppender(ol.format.XSD.writeBooleanTextNode),
+ 'phoneNumber': ol.xml.makeChildAppender(
+ ol.format.XSD.writeStringTextNode),
+ 'styleUrl': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode),
+ 'visibility': ol.xml.makeChildAppender(
+ ol.format.XSD.writeBooleanTextNode)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.PRIMITIVE_GEOMETRY_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'coordinates': ol.xml.makeChildAppender(
+ ol.format.KML.writeCoordinatesTextNode_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.POLYGON_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'outerBoundaryIs': ol.xml.makeChildAppender(
+ ol.format.KML.writeBoundaryIs_),
+ 'innerBoundaryIs': ol.xml.makeChildAppender(
+ ol.format.KML.writeBoundaryIs_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.POLY_STYLE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'color': ol.xml.makeChildAppender(ol.format.KML.writeColorTextNode_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Array.<string>>}
+ * @private
+ */
+ol.format.KML.STYLE_SEQUENCE_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, [
+ 'IconStyle', 'LabelStyle', 'LineStyle', 'PolyStyle'
+ ]);
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.KML.STYLE_SERIALIZERS_ = ol.xml.makeStructureNS(
+ ol.format.KML.NAMESPACE_URIS_, {
+ 'IconStyle': ol.xml.makeChildAppender(ol.format.KML.writeIconStyle_),
+ 'LabelStyle': ol.xml.makeChildAppender(ol.format.KML.writeLabelStyle_),
+ 'LineStyle': ol.xml.makeChildAppender(ol.format.KML.writeLineStyle_),
+ 'PolyStyle': ol.xml.makeChildAppender(ol.format.KML.writePolyStyle_)
+ });
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.KML.GX_NODE_FACTORY_ = function(value, objectStack, opt_nodeName) {
+ return ol.xml.createElementNS(ol.format.KML.GX_NAMESPACE_URIS_[0],
+ 'gx:' + opt_nodeName);
+};
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.KML.DOCUMENT_NODE_FACTORY_ = function(value, objectStack,
+ opt_nodeName) {
+ goog.asserts.assertInstanceof(value, ol.Feature,
+ 'value should be an ol.Feature');
+ var parentNode = objectStack[objectStack.length - 1].node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be an XML node');
+ return ol.xml.createElementNS(parentNode.namespaceURI, 'Placemark');
+};
+
+
+/**
+ * @const
+ * @param {*} value Value.
+ * @param {Array.<*>} objectStack Object stack.
+ * @param {string=} opt_nodeName Node name.
+ * @return {Node|undefined} Node.
+ * @private
+ */
+ol.format.KML.GEOMETRY_NODE_FACTORY_ = function(value, objectStack,
+ opt_nodeName) {
+ if (value) {
+ goog.asserts.assertInstanceof(value, ol.geom.Geometry,
+ 'value should be an ol.geom.Geometry');
+ var parentNode = objectStack[objectStack.length - 1].node;
+ goog.asserts.assert(ol.xml.isNode(parentNode),
+ 'parentNode should be an XML node');
+ return ol.xml.createElementNS(parentNode.namespaceURI,
+ ol.format.KML.GEOMETRY_TYPE_TO_NODENAME_[value.getType()]);
+ }
+};
+
+
+/**
+ * A factory for creating coordinates nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.COLOR_NODE_FACTORY_ = ol.xml.makeSimpleNodeFactory('color');
+
+
+/**
+ * A factory for creating coordinates nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.COORDINATES_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('coordinates');
+
+
+/**
+ * A factory for creating innerBoundaryIs nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.INNER_BOUNDARY_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('innerBoundaryIs');
+
+
+/**
+ * A factory for creating Point nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.POINT_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('Point');
+
+
+/**
+ * A factory for creating LineString nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.LINE_STRING_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('LineString');
+
+
+/**
+ * A factory for creating LinearRing nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.LINEAR_RING_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('LinearRing');
+
+
+/**
+ * A factory for creating Polygon nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.POLYGON_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('Polygon');
+
+
+/**
+ * A factory for creating outerBoundaryIs nodes.
+ * @const
+ * @type {function(*, Array.<*>, string=): (Node|undefined)}
+ * @private
+ */
+ol.format.KML.OUTER_BOUNDARY_NODE_FACTORY_ =
+ ol.xml.makeSimpleNodeFactory('outerBoundaryIs');
+
+
+/**
+ * Encode an array of features in the KML format. GeometryCollections, MultiPoints,
+ * MultiLineStrings, and MultiPolygons are output as MultiGeometries.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {string} Result.
+ * @api stable
+ */
+ol.format.KML.prototype.writeFeatures;
+
+
+/**
+ * Encode an array of features in the KML format as an XML node. GeometryCollections,
+ * MultiPoints, MultiLineStrings, and MultiPolygons are output as MultiGeometries.
+ *
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Options.
+ * @return {Node} Node.
+ * @api
+ */
+ol.format.KML.prototype.writeFeaturesNode = function(features, opt_options) {
+ opt_options = this.adaptOptions(opt_options);
+ var kml = ol.xml.createElementNS(ol.format.KML.NAMESPACE_URIS_[4], 'kml');
+ var xmlnsUri = 'http://www.w3.org/2000/xmlns/';
+ var xmlSchemaInstanceUri = 'http://www.w3.org/2001/XMLSchema-instance';
+ ol.xml.setAttributeNS(kml, xmlnsUri, 'xmlns:gx',
+ ol.format.KML.GX_NAMESPACE_URIS_[0]);
+ ol.xml.setAttributeNS(kml, xmlnsUri, 'xmlns:xsi', xmlSchemaInstanceUri);
+ ol.xml.setAttributeNS(kml, xmlSchemaInstanceUri, 'xsi:schemaLocation',
+ ol.format.KML.SCHEMA_LOCATION_);
+
+ var /** @type {ol.XmlNodeStackItem} */ context = {node: kml};
+ var properties = {};
+ if (features.length > 1) {
+ properties['Document'] = features;
+ } else if (features.length == 1) {
+ properties['Placemark'] = features[0];
+ }
+ var orderedKeys = ol.format.KML.KML_SEQUENCE_[kml.namespaceURI];
+ var values = ol.xml.makeSequence(properties, orderedKeys);
+ ol.xml.pushSerializeAndPop(context, ol.format.KML.KML_SERIALIZERS_,
+ ol.xml.OBJECT_PROPERTY_NODE_FACTORY, values, [opt_options], orderedKeys,
+ this);
+ return kml;
+};
+
+goog.provide('ol.ext.pbf');
+/** @typedef {function(*)} */
+ol.ext.pbf;
+(function() {
+var exports = {};
+var module = {exports: exports};
+var define;
+/**
+ * @fileoverview
+ * @suppress {accessControls, ambiguousFunctionDecl, checkDebuggerStatement, checkRegExp, checkTypes, checkVars, const, constantProperty, deprecated, duplicate, es5Strict, fileoverviewTags, missingProperties, nonStandardJsDocs, strictModuleDepCheck, suspiciousCode, undefinedNames, undefinedVars, unknownDefines, uselessCode, visibility}
+ */
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.pbf = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+'use strict';
+
+// lightweight Buffer shim for pbf browser build
+// based on code from github.com/feross/buffer (MIT-licensed)
+
+module.exports = Buffer;
+
+var ieee754 = _dereq_('ieee754');
+
+var BufferMethods;
+
+function Buffer(length) {
+ var arr;
+ if (length && length.length) {
+ arr = length;
+ length = arr.length;
+ }
+ var buf = new Uint8Array(length || 0);
+ if (arr) buf.set(arr);
+
+ buf.readUInt32LE = BufferMethods.readUInt32LE;
+ buf.writeUInt32LE = BufferMethods.writeUInt32LE;
+ buf.readInt32LE = BufferMethods.readInt32LE;
+ buf.writeInt32LE = BufferMethods.writeInt32LE;
+ buf.readFloatLE = BufferMethods.readFloatLE;
+ buf.writeFloatLE = BufferMethods.writeFloatLE;
+ buf.readDoubleLE = BufferMethods.readDoubleLE;
+ buf.writeDoubleLE = BufferMethods.writeDoubleLE;
+ buf.toString = BufferMethods.toString;
+ buf.write = BufferMethods.write;
+ buf.slice = BufferMethods.slice;
+ buf.copy = BufferMethods.copy;
+
+ buf._isBuffer = true;
+ return buf;
+}
+
+var lastStr, lastStrEncoded;
+
+BufferMethods = {
+ readUInt32LE: function(pos) {
+ return ((this[pos]) |
+ (this[pos + 1] << 8) |
+ (this[pos + 2] << 16)) +
+ (this[pos + 3] * 0x1000000);
+ },
+
+ writeUInt32LE: function(val, pos) {
+ this[pos] = val;
+ this[pos + 1] = (val >>> 8);
+ this[pos + 2] = (val >>> 16);
+ this[pos + 3] = (val >>> 24);
+ },
+
+ readInt32LE: function(pos) {
+ return ((this[pos]) |
+ (this[pos + 1] << 8) |
+ (this[pos + 2] << 16)) +
+ (this[pos + 3] << 24);
+ },
+
+ readFloatLE: function(pos) { return ieee754.read(this, pos, true, 23, 4); },
+ readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
+
+ writeFloatLE: function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
+ writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
+
+ toString: function(encoding, start, end) {
+ var str = '',
+ tmp = '';
+
+ start = start || 0;
+ end = Math.min(this.length, end || this.length);
+
+ for (var i = start; i < end; i++) {
+ var ch = this[i];
+ if (ch <= 0x7F) {
+ str += decodeURIComponent(tmp) + String.fromCharCode(ch);
+ tmp = '';
+ } else {
+ tmp += '%' + ch.toString(16);
+ }
+ }
+
+ str += decodeURIComponent(tmp);
+
+ return str;
+ },
+
+ write: function(str, pos) {
+ var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
+ for (var i = 0; i < bytes.length; i++) {
+ this[pos + i] = bytes[i];
+ }
+ },
+
+ slice: function(start, end) {
+ return this.subarray(start, end);
+ },
+
+ copy: function(buf, pos) {
+ pos = pos || 0;
+ for (var i = 0; i < this.length; i++) {
+ buf[pos + i] = this[i];
+ }
+ }
+};
+
+BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
+
+Buffer.byteLength = function(str) {
+ lastStr = str;
+ lastStrEncoded = encodeString(str);
+ return lastStrEncoded.length;
+};
+
+Buffer.isBuffer = function(buf) {
+ return !!(buf && buf._isBuffer);
+};
+
+function encodeString(str) {
+ var length = str.length,
+ bytes = [];
+
+ for (var i = 0, c, lead; i < length; i++) {
+ c = str.charCodeAt(i); // code point
+
+ if (c > 0xD7FF && c < 0xE000) {
+
+ if (lead) {
+ if (c < 0xDC00) {
+ bytes.push(0xEF, 0xBF, 0xBD);
+ lead = c;
+ continue;
+
+ } else {
+ c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
+ lead = null;
+ }
+
+ } else {
+ if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
+ else lead = c;
+
+ continue;
+ }
+
+ } else if (lead) {
+ bytes.push(0xEF, 0xBF, 0xBD);
+ lead = null;
+ }
+
+ if (c < 0x80) bytes.push(c);
+ else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
+ else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+ else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+ }
+ return bytes;
+}
+
+},{"ieee754":3}],2:[function(_dereq_,module,exports){
+(function (global){
+'use strict';
+
+module.exports = Pbf;
+
+var Buffer = global.Buffer || _dereq_('./buffer');
+
+function Pbf(buf) {
+ this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
+ this.pos = 0;
+ this.length = this.buf.length;
+}
+
+Pbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
+Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
+Pbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
+Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
+
+var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
+ SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
+ POW_2_63 = Math.pow(2, 63);
+
+Pbf.prototype = {
+
+ destroy: function() {
+ this.buf = null;
+ },
+
+ // === READING =================================================================
+
+ readFields: function(readField, result, end) {
+ end = end || this.length;
+
+ while (this.pos < end) {
+ var val = this.readVarint(),
+ tag = val >> 3,
+ startPos = this.pos;
+
+ readField(tag, result, this);
+
+ if (this.pos === startPos) this.skip(val);
+ }
+ return result;
+ },
+
+ readMessage: function(readField, result) {
+ return this.readFields(readField, result, this.readVarint() + this.pos);
+ },
+
+ readFixed32: function() {
+ var val = this.buf.readUInt32LE(this.pos);
+ this.pos += 4;
+ return val;
+ },
+
+ readSFixed32: function() {
+ var val = this.buf.readInt32LE(this.pos);
+ this.pos += 4;
+ return val;
+ },
+
+ // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
+
+ readFixed64: function() {
+ var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+ this.pos += 8;
+ return val;
+ },
+
+ readSFixed64: function() {
+ var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+ this.pos += 8;
+ return val;
+ },
+
+ readFloat: function() {
+ var val = this.buf.readFloatLE(this.pos);
+ this.pos += 4;
+ return val;
+ },
+
+ readDouble: function() {
+ var val = this.buf.readDoubleLE(this.pos);
+ this.pos += 8;
+ return val;
+ },
+
+ readVarint: function() {
+ var buf = this.buf,
+ val, b;
+
+ b = buf[this.pos++]; val = b & 0x7f; if (b < 0x80) return val;
+ b = buf[this.pos++]; val |= (b & 0x7f) << 7; if (b < 0x80) return val;
+ b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
+ b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
+
+ return readVarintRemainder(val, this);
+ },
+
+ readVarint64: function() {
+ var startPos = this.pos,
+ val = this.readVarint();
+
+ if (val < POW_2_63) return val;
+
+ var pos = this.pos - 2;
+ while (this.buf[pos] === 0xff) pos--;
+ if (pos < startPos) pos = startPos;
+
+ val = 0;
+ for (var i = 0; i < pos - startPos + 1; i++) {
+ var b = ~this.buf[startPos + i] & 0x7f;
+ val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
+ }
+
+ return -val - 1;
+ },
+
+ readSVarint: function() {
+ var num = this.readVarint();
+ return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+ },
+
+ readBoolean: function() {
+ return Boolean(this.readVarint());
+ },
+
+ readString: function() {
+ var end = this.readVarint() + this.pos,
+ str = this.buf.toString('utf8', this.pos, end);
+ this.pos = end;
+ return str;
+ },
+
+ readBytes: function() {
+ var end = this.readVarint() + this.pos,
+ buffer = this.buf.slice(this.pos, end);
+ this.pos = end;
+ return buffer;
+ },
+
+ // verbose for performance reasons; doesn't affect gzipped size
+
+ readPackedVarint: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readVarint());
+ return arr;
+ },
+ readPackedSVarint: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readSVarint());
+ return arr;
+ },
+ readPackedBoolean: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readBoolean());
+ return arr;
+ },
+ readPackedFloat: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readFloat());
+ return arr;
+ },
+ readPackedDouble: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readDouble());
+ return arr;
+ },
+ readPackedFixed32: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readFixed32());
+ return arr;
+ },
+ readPackedSFixed32: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readSFixed32());
+ return arr;
+ },
+ readPackedFixed64: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readFixed64());
+ return arr;
+ },
+ readPackedSFixed64: function() {
+ var end = this.readVarint() + this.pos, arr = [];
+ while (this.pos < end) arr.push(this.readSFixed64());
+ return arr;
+ },
+
+ skip: function(val) {
+ var type = val & 0x7;
+ if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
+ else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
+ else if (type === Pbf.Fixed32) this.pos += 4;
+ else if (type === Pbf.Fixed64) this.pos += 8;
+ else throw new Error('Unimplemented type: ' + type);
+ },
+
+ // === WRITING =================================================================
+
+ writeTag: function(tag, type) {
+ this.writeVarint((tag << 3) | type);
+ },
+
+ realloc: function(min) {
+ var length = this.length || 16;
+
+ while (length < this.pos + min) length *= 2;
+
+ if (length !== this.length) {
+ var buf = new Buffer(length);
+ this.buf.copy(buf);
+ this.buf = buf;
+ this.length = length;
+ }
+ },
+
+ finish: function() {
+ this.length = this.pos;
+ this.pos = 0;
+ return this.buf.slice(0, this.length);
+ },
+
+ writeFixed32: function(val) {
+ this.realloc(4);
+ this.buf.writeUInt32LE(val, this.pos);
+ this.pos += 4;
+ },
+
+ writeSFixed32: function(val) {
+ this.realloc(4);
+ this.buf.writeInt32LE(val, this.pos);
+ this.pos += 4;
+ },
+
+ writeFixed64: function(val) {
+ this.realloc(8);
+ this.buf.writeInt32LE(val & -1, this.pos);
+ this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+ this.pos += 8;
+ },
+
+ writeSFixed64: function(val) {
+ this.realloc(8);
+ this.buf.writeInt32LE(val & -1, this.pos);
+ this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+ this.pos += 8;
+ },
+
+ writeVarint: function(val) {
+ val = +val;
+
+ if (val > 0xfffffff) {
+ writeBigVarint(val, this);
+ return;
+ }
+
+ this.realloc(4);
+
+ this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+ this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+ this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+ this.buf[this.pos++] = (val >>> 7) & 0x7f;
+ },
+
+ writeSVarint: function(val) {
+ this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
+ },
+
+ writeBoolean: function(val) {
+ this.writeVarint(Boolean(val));
+ },
+
+ writeString: function(str) {
+ str = String(str);
+ var bytes = Buffer.byteLength(str);
+ this.writeVarint(bytes);
+ this.realloc(bytes);
+ this.buf.write(str, this.pos);
+ this.pos += bytes;
+ },
+
+ writeFloat: function(val) {
+ this.realloc(4);
+ this.buf.writeFloatLE(val, this.pos);
+ this.pos += 4;
+ },
+
+ writeDouble: function(val) {
+ this.realloc(8);
+ this.buf.writeDoubleLE(val, this.pos);
+ this.pos += 8;
+ },
+
+ writeBytes: function(buffer) {
+ var len = buffer.length;
+ this.writeVarint(len);
+ this.realloc(len);
+ for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+ },
+
+ writeRawMessage: function(fn, obj) {
+ this.pos++; // reserve 1 byte for short message length
+
+ // write the message directly to the buffer and see how much was written
+ var startPos = this.pos;
+ fn(obj, this);
+ var len = this.pos - startPos;
+
+ if (len >= 0x80) reallocForRawMessage(startPos, len, this);
+
+ // finally, write the message length in the reserved place and restore the position
+ this.pos = startPos - 1;
+ this.writeVarint(len);
+ this.pos += len;
+ },
+
+ writeMessage: function(tag, fn, obj) {
+ this.writeTag(tag, Pbf.Bytes);
+ this.writeRawMessage(fn, obj);
+ },
+
+ writePackedVarint: function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr); },
+ writePackedSVarint: function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr); },
+ writePackedBoolean: function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr); },
+ writePackedFloat: function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr); },
+ writePackedDouble: function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr); },
+ writePackedFixed32: function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr); },
+ writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
+ writePackedFixed64: function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr); },
+ writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
+
+ writeBytesField: function(tag, buffer) {
+ this.writeTag(tag, Pbf.Bytes);
+ this.writeBytes(buffer);
+ },
+ writeFixed32Field: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed32);
+ this.writeFixed32(val);
+ },
+ writeSFixed32Field: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed32);
+ this.writeSFixed32(val);
+ },
+ writeFixed64Field: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed64);
+ this.writeFixed64(val);
+ },
+ writeSFixed64Field: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed64);
+ this.writeSFixed64(val);
+ },
+ writeVarintField: function(tag, val) {
+ this.writeTag(tag, Pbf.Varint);
+ this.writeVarint(val);
+ },
+ writeSVarintField: function(tag, val) {
+ this.writeTag(tag, Pbf.Varint);
+ this.writeSVarint(val);
+ },
+ writeStringField: function(tag, str) {
+ this.writeTag(tag, Pbf.Bytes);
+ this.writeString(str);
+ },
+ writeFloatField: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed32);
+ this.writeFloat(val);
+ },
+ writeDoubleField: function(tag, val) {
+ this.writeTag(tag, Pbf.Fixed64);
+ this.writeDouble(val);
+ },
+ writeBooleanField: function(tag, val) {
+ this.writeVarintField(tag, Boolean(val));
+ }
+};
+
+function readVarintRemainder(val, pbf) {
+ var buf = pbf.buf, b;
+
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000; if (b < 0x80) return val;
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000; if (b < 0x80) return val;
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000; if (b < 0x80) return val;
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000; if (b < 0x80) return val;
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000; if (b < 0x80) return val;
+ b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
+
+ throw new Error('Expected varint not more than 10 bytes');
+}
+
+function writeBigVarint(val, pbf) {
+ pbf.realloc(10);
+
+ var maxPos = pbf.pos + 10;
+
+ while (val >= 1) {
+ if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
+ var b = val & 0xff;
+ pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
+ val /= 0x80;
+ }
+}
+
+function reallocForRawMessage(startPos, len, pbf) {
+ var extraLen =
+ len <= 0x3fff ? 1 :
+ len <= 0x1fffff ? 2 :
+ len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
+
+ // if 1 byte isn't enough for encoding message length, shift the data to the right
+ pbf.realloc(extraLen);
+ for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
+}
+
+function writePackedVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]); }
+function writePackedSVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]); }
+function writePackedFloat(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]); }
+function writePackedDouble(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]); }
+function writePackedBoolean(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]); }
+function writePackedFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]); }
+function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
+function writePackedFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]); }
+function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./buffer":1}],3:[function(_dereq_,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+ var e, m
+ var eLen = nBytes * 8 - mLen - 1
+ var eMax = (1 << eLen) - 1
+ var eBias = eMax >> 1
+ var nBits = -7
+ var i = isLE ? (nBytes - 1) : 0
+ var d = isLE ? -1 : 1
+ var s = buffer[offset + i]
+
+ i += d
+
+ e = s & ((1 << (-nBits)) - 1)
+ s >>= (-nBits)
+ nBits += eLen
+ for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+ m = e & ((1 << (-nBits)) - 1)
+ e >>= (-nBits)
+ nBits += mLen
+ for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+ if (e === 0) {
+ e = 1 - eBias
+ } else if (e === eMax) {
+ return m ? NaN : ((s ? -1 : 1) * Infinity)
+ } else {
+ m = m + Math.pow(2, mLen)
+ e = e - eBias
+ }
+ return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+ var e, m, c
+ var eLen = nBytes * 8 - mLen - 1
+ var eMax = (1 << eLen) - 1
+ var eBias = eMax >> 1
+ var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+ var i = isLE ? 0 : (nBytes - 1)
+ var d = isLE ? 1 : -1
+ var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+ value = Math.abs(value)
+
+ if (isNaN(value) || value === Infinity) {
+ m = isNaN(value) ? 1 : 0
+ e = eMax
+ } else {
+ e = Math.floor(Math.log(value) / Math.LN2)
+ if (value * (c = Math.pow(2, -e)) < 1) {
+ e--
+ c *= 2
+ }
+ if (e + eBias >= 1) {
+ value += rt / c
+ } else {
+ value += rt * Math.pow(2, 1 - eBias)
+ }
+ if (value * c >= 2) {
+ e++
+ c /= 2
+ }
+
+ if (e + eBias >= eMax) {
+ m = 0
+ e = eMax
+ } else if (e + eBias >= 1) {
+ m = (value * c - 1) * Math.pow(2, mLen)
+ e = e + eBias
+ } else {
+ m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+ e = 0
+ }
+ }
+
+ for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+ e = (e << mLen) | m
+ eLen += mLen
+ for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+ buffer[offset + i - d] |= s * 128
+}
+
+},{}]},{},[2])(2)
+});
+ol.ext.pbf = module.exports;
+})();
+
+goog.provide('ol.ext.vectortile');
+/** @typedef {function(*)} */
+ol.ext.vectortile;
+(function() {
+var exports = {};
+var module = {exports: exports};
+var define;
+/**
+ * @fileoverview
+ * @suppress {accessControls, ambiguousFunctionDecl, checkDebuggerStatement, checkRegExp, checkTypes, checkVars, const, constantProperty, deprecated, duplicate, es5Strict, fileoverviewTags, missingProperties, nonStandardJsDocs, strictModuleDepCheck, suspiciousCode, undefinedNames, undefinedVars, unknownDefines, uselessCode, visibility}
+ */
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.vectortile = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+module.exports.VectorTile = _dereq_('./lib/vectortile.js');
+module.exports.VectorTileFeature = _dereq_('./lib/vectortilefeature.js');
+module.exports.VectorTileLayer = _dereq_('./lib/vectortilelayer.js');
+
+},{"./lib/vectortile.js":2,"./lib/vectortilefeature.js":3,"./lib/vectortilelayer.js":4}],2:[function(_dereq_,module,exports){
+'use strict';
+
+var VectorTileLayer = _dereq_('./vectortilelayer');
+
+module.exports = VectorTile;
+
+function VectorTile(pbf, end) {
+ this.layers = pbf.readFields(readTile, {}, end);
+}
+
+function readTile(tag, layers, pbf) {
+ if (tag === 3) {
+ var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
+ if (layer.length) layers[layer.name] = layer;
+ }
+}
+
+
+},{"./vectortilelayer":4}],3:[function(_dereq_,module,exports){
+'use strict';
+
+var Point = _dereq_('point-geometry');
+
+module.exports = VectorTileFeature;
+
+function VectorTileFeature(pbf, end, extent, keys, values) {
+ // Public
+ this.properties = {};
+ this.extent = extent;
+ this.type = 0;
+
+ // Private
+ this._pbf = pbf;
+ this._geometry = -1;
+ this._keys = keys;
+ this._values = values;
+
+ pbf.readFields(readFeature, this, end);
+}
+
+function readFeature(tag, feature, pbf) {
+ if (tag == 1) feature._id = pbf.readVarint();
+ else if (tag == 2) readTag(pbf, feature);
+ else if (tag == 3) feature.type = pbf.readVarint();
+ else if (tag == 4) feature._geometry = pbf.pos;
+}
+
+function readTag(pbf, feature) {
+ var end = pbf.readVarint() + pbf.pos;
+
+ while (pbf.pos < end) {
+ var key = feature._keys[pbf.readVarint()],
+ value = feature._values[pbf.readVarint()];
+ feature.properties[key] = value;
+ }
+}
+
+VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+
+VectorTileFeature.prototype.loadGeometry = function() {
+ var pbf = this._pbf;
+ pbf.pos = this._geometry;
+
+ var end = pbf.readVarint() + pbf.pos,
+ cmd = 1,
+ length = 0,
+ x = 0,
+ y = 0,
+ lines = [],
+ line;
+
+ while (pbf.pos < end) {
+ if (!length) {
+ var cmdLen = pbf.readVarint();
+ cmd = cmdLen & 0x7;
+ length = cmdLen >> 3;
+ }
+
+ length--;
+
+ if (cmd === 1 || cmd === 2) {
+ x += pbf.readSVarint();
+ y += pbf.readSVarint();
+
+ if (cmd === 1) { // moveTo
+ if (line) lines.push(line);
+ line = [];
+ }
+
+ line.push(new Point(x, y));
+
+ } else if (cmd === 7) {
+
+ // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
+ if (line) {
+ line.push(line[0].clone()); // closePolygon
+ }
+
+ } else {
+ throw new Error('unknown command ' + cmd);
+ }
+ }
+
+ if (line) lines.push(line);
+
+ return lines;
+};
+
+VectorTileFeature.prototype.bbox = function() {
+ var pbf = this._pbf;
+ pbf.pos = this._geometry;
+
+ var end = pbf.readVarint() + pbf.pos,
+ cmd = 1,
+ length = 0,
+ x = 0,
+ y = 0,
+ x1 = Infinity,
+ x2 = -Infinity,
+ y1 = Infinity,
+ y2 = -Infinity;
+
+ while (pbf.pos < end) {
+ if (!length) {
+ var cmdLen = pbf.readVarint();
+ cmd = cmdLen & 0x7;
+ length = cmdLen >> 3;
+ }
+
+ length--;
+
+ if (cmd === 1 || cmd === 2) {
+ x += pbf.readSVarint();
+ y += pbf.readSVarint();
+ if (x < x1) x1 = x;
+ if (x > x2) x2 = x;
+ if (y < y1) y1 = y;
+ if (y > y2) y2 = y;
+
+ } else if (cmd !== 7) {
+ throw new Error('unknown command ' + cmd);
+ }
+ }
+
+ return [x1, y1, x2, y2];
+};
+
+VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
+ var size = this.extent * Math.pow(2, z),
+ x0 = this.extent * x,
+ y0 = this.extent * y,
+ coords = this.loadGeometry(),
+ type = VectorTileFeature.types[this.type],
+ i, j;
+
+ function project(line) {
+ for (var j = 0; j < line.length; j++) {
+ var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
+ line[j] = [
+ (p.x + x0) * 360 / size - 180,
+ 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+ ];
+ }
+ }
+
+ switch (this.type) {
+ case 1:
+ var points = [];
+ for (i = 0; i < coords.length; i++) {
+ points[i] = coords[i][0];
+ }
+ coords = points;
+ project(coords);
+ break;
+
+ case 2:
+ for (i = 0; i < coords.length; i++) {
+ project(coords[i]);
+ }
+ break;
+
+ case 3:
+ coords = classifyRings(coords);
+ for (i = 0; i < coords.length; i++) {
+ for (j = 0; j < coords[i].length; j++) {
+ project(coords[i][j]);
+ }
+ }
+ break;
+ }
+
+ if (coords.length === 1) {
+ coords = coords[0];
+ } else {
+ type = 'Multi' + type;
+ }
+
+ var result = {
+ type: "Feature",
+ geometry: {
+ type: type,
+ coordinates: coords
+ },
+ properties: this.properties
+ };
+
+ if ('_id' in this) {
+ result.id = this._id;
+ }
+
+ return result;
+};
+
+// classifies an array of rings into polygons with outer rings and holes
+
+function classifyRings(rings) {
+ var len = rings.length;
+
+ if (len <= 1) return [rings];
+
+ var polygons = [],
+ polygon,
+ ccw;
+
+ for (var i = 0; i < len; i++) {
+ var area = signedArea(rings[i]);
+ if (area === 0) continue;
+
+ if (ccw === undefined) ccw = area < 0;
+
+ if (ccw === area < 0) {
+ if (polygon) polygons.push(polygon);
+ polygon = [rings[i]];
+
+ } else {
+ polygon.push(rings[i]);
+ }
+ }
+ if (polygon) polygons.push(polygon);
+
+ return polygons;
+}
+
+function signedArea(ring) {
+ var sum = 0;
+ for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
+ p1 = ring[i];
+ p2 = ring[j];
+ sum += (p2.x - p1.x) * (p1.y + p2.y);
+ }
+ return sum;
+}
+
+},{"point-geometry":5}],4:[function(_dereq_,module,exports){
+'use strict';
+
+var VectorTileFeature = _dereq_('./vectortilefeature.js');
+
+module.exports = VectorTileLayer;
+
+function VectorTileLayer(pbf, end) {
+ // Public
+ this.version = 1;
+ this.name = null;
+ this.extent = 4096;
+ this.length = 0;
+
+ // Private
+ this._pbf = pbf;
+ this._keys = [];
+ this._values = [];
+ this._features = [];
+
+ pbf.readFields(readLayer, this, end);
+
+ this.length = this._features.length;
+}
+
+function readLayer(tag, layer, pbf) {
+ if (tag === 15) layer.version = pbf.readVarint();
+ else if (tag === 1) layer.name = pbf.readString();
+ else if (tag === 5) layer.extent = pbf.readVarint();
+ else if (tag === 2) layer._features.push(pbf.pos);
+ else if (tag === 3) layer._keys.push(pbf.readString());
+ else if (tag === 4) layer._values.push(readValueMessage(pbf));
+}
+
+function readValueMessage(pbf) {
+ var value = null,
+ end = pbf.readVarint() + pbf.pos;
+
+ while (pbf.pos < end) {
+ var tag = pbf.readVarint() >> 3;
+
+ value = tag === 1 ? pbf.readString() :
+ tag === 2 ? pbf.readFloat() :
+ tag === 3 ? pbf.readDouble() :
+ tag === 4 ? pbf.readVarint64() :
+ tag === 5 ? pbf.readVarint() :
+ tag === 6 ? pbf.readSVarint() :
+ tag === 7 ? pbf.readBoolean() : null;
+ }
+
+ return value;
+}
+
+// return feature `i` from this layer as a `VectorTileFeature`
+VectorTileLayer.prototype.feature = function(i) {
+ if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
+
+ this._pbf.pos = this._features[i];
+
+ var end = this._pbf.readVarint() + this._pbf.pos;
+ return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
+};
+
+},{"./vectortilefeature.js":3}],5:[function(_dereq_,module,exports){
+'use strict';
+
+module.exports = Point;
+
+function Point(x, y) {
+ this.x = x;
+ this.y = y;
+}
+
+Point.prototype = {
+ clone: function() { return new Point(this.x, this.y); },
+
+ add: function(p) { return this.clone()._add(p); },
+ sub: function(p) { return this.clone()._sub(p); },
+ mult: function(k) { return this.clone()._mult(k); },
+ div: function(k) { return this.clone()._div(k); },
+ rotate: function(a) { return this.clone()._rotate(a); },
+ matMult: function(m) { return this.clone()._matMult(m); },
+ unit: function() { return this.clone()._unit(); },
+ perp: function() { return this.clone()._perp(); },
+ round: function() { return this.clone()._round(); },
+
+ mag: function() {
+ return Math.sqrt(this.x * this.x + this.y * this.y);
+ },
+
+ equals: function(p) {
+ return this.x === p.x &&
+ this.y === p.y;
+ },
+
+ dist: function(p) {
+ return Math.sqrt(this.distSqr(p));
+ },
+
+ distSqr: function(p) {
+ var dx = p.x - this.x,
+ dy = p.y - this.y;
+ return dx * dx + dy * dy;
+ },
+
+ angle: function() {
+ return Math.atan2(this.y, this.x);
+ },
+
+ angleTo: function(b) {
+ return Math.atan2(this.y - b.y, this.x - b.x);
+ },
+
+ angleWith: function(b) {
+ return this.angleWithSep(b.x, b.y);
+ },
+
+ // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
+ angleWithSep: function(x, y) {
+ return Math.atan2(
+ this.x * y - this.y * x,
+ this.x * x + this.y * y);
+ },
+
+ _matMult: function(m) {
+ var x = m[0] * this.x + m[1] * this.y,
+ y = m[2] * this.x + m[3] * this.y;
+ this.x = x;
+ this.y = y;
+ return this;
+ },
+
+ _add: function(p) {
+ this.x += p.x;
+ this.y += p.y;
+ return this;
+ },
+
+ _sub: function(p) {
+ this.x -= p.x;
+ this.y -= p.y;
+ return this;
+ },
+
+ _mult: function(k) {
+ this.x *= k;
+ this.y *= k;
+ return this;
+ },
+
+ _div: function(k) {
+ this.x /= k;
+ this.y /= k;
+ return this;
+ },
+
+ _unit: function() {
+ this._div(this.mag());
+ return this;
+ },
+
+ _perp: function() {
+ var y = this.y;
+ this.y = this.x;
+ this.x = -y;
+ return this;
+ },
+
+ _rotate: function(angle) {
+ var cos = Math.cos(angle),
+ sin = Math.sin(angle),
+ x = cos * this.x - sin * this.y,
+ y = sin * this.x + cos * this.y;
+ this.x = x;
+ this.y = y;
+ return this;
+ },
+
+ _round: function() {
+ this.x = Math.round(this.x);
+ this.y = Math.round(this.y);
+ return this;
+ }
+};
+
+// constructs Point from an array if necessary
+Point.convert = function (a) {
+ if (a instanceof Point) {
+ return a;
+ }
+ if (Array.isArray(a)) {
+ return new Point(a[0], a[1]);
+ }
+ return a;
+};
+
+},{}]},{},[1])(1)
+});
+ol.ext.vectortile = module.exports;
+})();
+
+//FIXME Implement projection handling
+
+goog.provide('ol.format.MVT');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.ext.pbf');
+goog.require('ol.ext.vectortile');
+goog.require('ol.format.Feature');
+goog.require('ol.format.FormatType');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+goog.require('ol.render.Feature');
+
+
+/**
+ * @classdesc
+ * Feature format for reading data in the Mapbox MVT format.
+ *
+ * @constructor
+ * @extends {ol.format.Feature}
+ * @param {olx.format.MVTOptions=} opt_options Options.
+ * @api
+ */
+ol.format.MVT = function(opt_options) {
+
+ ol.format.Feature.call(this);
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @type {ol.proj.Projection}
+ */
+ this.defaultDataProjection = new ol.proj.Projection({
+ code: '',
+ units: ol.proj.Units.TILE_PIXELS
+ });
+
+ /**
+ * @private
+ * @type {function((ol.geom.Geometry|Object.<string, *>)=)|
+ * function(ol.geom.GeometryType,Array.<number>,
+ * (Array.<number>|Array.<Array.<number>>),Object.<string, *>)}
+ */
+ this.featureClass_ = options.featureClass ?
+ options.featureClass : ol.render.Feature;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.geometryName_ = options.geometryName ?
+ options.geometryName : 'geometry';
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.layerName_ = options.layerName ? options.layerName : 'layer';
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.layers_ = options.layers ? options.layers : null;
+
+};
+ol.inherits(ol.format.MVT, ol.format.Feature);
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.MVT.prototype.getType = function() {
+ return ol.format.FormatType.ARRAY_BUFFER;
+};
+
+
+/**
+ * @private
+ * @param {Object} rawFeature Raw Mapbox feature.
+ * @param {string} layer Layer.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.MVT.prototype.readFeature_ = function(
+ rawFeature, layer, opt_options) {
+ var feature = new this.featureClass_();
+ var values = rawFeature.properties;
+ values[this.layerName_] = layer;
+ var geometry = ol.format.Feature.transformWithOptions(
+ ol.format.MVT.readGeometry_(rawFeature), false,
+ this.adaptOptions(opt_options));
+ if (geometry) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.Geometry);
+ values[this.geometryName_] = geometry;
+ }
+ feature.setProperties(values);
+ feature.setGeometryName(this.geometryName_);
+ return feature;
+};
+
+
+/**
+ * @private
+ * @param {Object} rawFeature Raw Mapbox feature.
+ * @param {string} layer Layer.
+ * @return {ol.render.Feature} Feature.
+ */
+ol.format.MVT.prototype.readRenderFeature_ = function(rawFeature, layer) {
+ var coords = rawFeature.loadGeometry();
+ var ends = [];
+ var flatCoordinates = [];
+ ol.format.MVT.calculateFlatCoordinates_(coords, flatCoordinates, ends);
+
+ var type = rawFeature.type;
+ /** @type {ol.geom.GeometryType} */
+ var geometryType;
+ if (type === 1) {
+ geometryType = coords.length === 1 ?
+ ol.geom.GeometryType.POINT : ol.geom.GeometryType.MULTI_POINT;
+ } else if (type === 2) {
+ if (coords.length === 1) {
+ geometryType = ol.geom.GeometryType.LINE_STRING;
+ } else {
+ geometryType = ol.geom.GeometryType.MULTI_LINE_STRING;
+ }
+ } else if (type === 3) {
+ geometryType = ol.geom.GeometryType.POLYGON;
+ }
+
+ var values = rawFeature.properties;
+ values[this.layerName_] = layer;
+
+ return new this.featureClass_(geometryType, flatCoordinates, ends, values);
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.format.MVT.prototype.readFeatures = function(source, opt_options) {
+ goog.asserts.assertInstanceof(source, ArrayBuffer);
+
+ var layers = this.layers_;
+
+ var pbf = new ol.ext.pbf(source);
+ var tile = new ol.ext.vectortile.VectorTile(pbf);
+ var features = [];
+ var featureClass = this.featureClass_;
+ var layer, feature;
+ for (var name in tile.layers) {
+ if (layers && layers.indexOf(name) == -1) {
+ continue;
+ }
+ layer = tile.layers[name];
+
+ for (var i = 0, ii = layer.length; i < ii; ++i) {
+ if (featureClass === ol.render.Feature) {
+ feature = this.readRenderFeature_(layer.feature(i), name);
+ } else {
+ feature = this.readFeature_(layer.feature(i), name, opt_options);
+ }
+ features.push(feature);
+ }
+ }
+
+ return features;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.format.MVT.prototype.readProjection = function(source) {
+ return this.defaultDataProjection;
+};
+
+
+/**
+ * Sets the layers that features will be read from.
+ * @param {Array.<string>} layers Layers.
+ * @api
+ */
+ol.format.MVT.prototype.setLayers = function(layers) {
+ this.layers_ = layers;
+};
+
+
+/**
+ * @private
+ * @param {Object} coords Raw feature coordinates.
+ * @param {Array.<number>} flatCoordinates Flat coordinates to be populated by
+ * this function.
+ * @param {Array.<number>} ends Ends to be populated by this function.
+ */
+ol.format.MVT.calculateFlatCoordinates_ = function(
+ coords, flatCoordinates, ends) {
+ var end = 0;
+ for (var i = 0, ii = coords.length; i < ii; ++i) {
+ var line = coords[i];
+ var j, jj;
+ for (j = 0, jj = line.length; j < jj; ++j) {
+ var coord = line[j];
+ // Non-tilespace coords can be calculated here when a TileGrid and
+ // TileCoord are known.
+ flatCoordinates.push(coord.x, coord.y);
+ }
+ end += 2 * j;
+ ends.push(end);
+ }
+};
+
+
+/**
+ * @private
+ * @param {Object} rawFeature Raw Mapbox feature.
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.MVT.readGeometry_ = function(rawFeature) {
+ var type = rawFeature.type;
+ if (type === 0) {
+ return null;
+ }
+
+ var coords = rawFeature.loadGeometry();
+ var ends = [];
+ var flatCoordinates = [];
+ ol.format.MVT.calculateFlatCoordinates_(coords, flatCoordinates, ends);
+
+ var geom;
+ if (type === 1) {
+ geom = coords.length === 1 ?
+ new ol.geom.Point(null) : new ol.geom.MultiPoint(null);
+ } else if (type === 2) {
+ if (coords.length === 1) {
+ geom = new ol.geom.LineString(null);
+ } else {
+ geom = new ol.geom.MultiLineString(null);
+ }
+ } else if (type === 3) {
+ geom = new ol.geom.Polygon(null);
+ }
+
+ geom.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates,
+ ends);
+
+ return geom;
+};
+
+goog.provide('ol.format.ogc.filter');
+goog.provide('ol.format.ogc.filter.Filter');
+goog.provide('ol.format.ogc.filter.Logical');
+goog.provide('ol.format.ogc.filter.LogicalBinary');
+goog.provide('ol.format.ogc.filter.And');
+goog.provide('ol.format.ogc.filter.Or');
+goog.provide('ol.format.ogc.filter.Not');
+goog.provide('ol.format.ogc.filter.Bbox');
+goog.provide('ol.format.ogc.filter.Comparison');
+goog.provide('ol.format.ogc.filter.ComparisonBinary');
+goog.provide('ol.format.ogc.filter.EqualTo');
+goog.provide('ol.format.ogc.filter.NotEqualTo');
+goog.provide('ol.format.ogc.filter.LessThan');
+goog.provide('ol.format.ogc.filter.LessThanOrEqualTo');
+goog.provide('ol.format.ogc.filter.GreaterThan');
+goog.provide('ol.format.ogc.filter.GreaterThanOrEqualTo');
+goog.provide('ol.format.ogc.filter.IsNull');
+goog.provide('ol.format.ogc.filter.IsBetween');
+goog.provide('ol.format.ogc.filter.IsLike');
+
+
+/**
+ * Create a logical `<And>` operator between two filter conditions.
+ *
+ * @param {!ol.format.ogc.filter.Filter} conditionA First filter condition.
+ * @param {!ol.format.ogc.filter.Filter} conditionB Second filter condition.
+ * @returns {!ol.format.ogc.filter.And} `<And>` operator.
+ * @api
+ */
+ol.format.ogc.filter.and = function(conditionA, conditionB) {
+ return new ol.format.ogc.filter.And(conditionA, conditionB);
+};
+
+
+/**
+ * Create a logical `<Or>` operator between two filter conditions.
+ *
+ * @param {!ol.format.ogc.filter.Filter} conditionA First filter condition.
+ * @param {!ol.format.ogc.filter.Filter} conditionB Second filter condition.
+ * @returns {!ol.format.ogc.filter.Or} `<Or>` operator.
+ * @api
+ */
+ol.format.ogc.filter.or = function(conditionA, conditionB) {
+ return new ol.format.ogc.filter.Or(conditionA, conditionB);
+};
+
+
+/**
+ * Represents a logical `<Not>` operator for a filter condition.
+ *
+ * @param {!ol.format.ogc.filter.Filter} condition Filter condition.
+ * @returns {!ol.format.ogc.filter.Not} `<Not>` operator.
+ * @api
+ */
+ol.format.ogc.filter.not = function(condition) {
+ return new ol.format.ogc.filter.Not(condition);
+};
+
+
+/**
+ * Create a `<BBOX>` operator to test whether a geometry-valued property
+ * intersects a fixed bounding box
+ *
+ * @param {!string} geometryName Geometry name to use.
+ * @param {!ol.Extent} extent Extent.
+ * @param {string=} opt_srsName SRS name. No srsName attribute will be
+ * set on geometries when this is not provided.
+ * @returns {!ol.format.ogc.filter.Bbox} `<BBOX>` operator.
+ * @api
+ */
+ol.format.ogc.filter.bbox = function(geometryName, extent, opt_srsName) {
+ return new ol.format.ogc.filter.Bbox(geometryName, extent, opt_srsName);
+};
+
+
+/**
+ * Creates a `<PropertyIsEqualTo>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!(string|number)} expression The value to compare.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @returns {!ol.format.ogc.filter.EqualTo} `<PropertyIsEqualTo>` operator.
+ * @api
+ */
+ol.format.ogc.filter.equalTo = function(propertyName, expression, opt_matchCase) {
+ return new ol.format.ogc.filter.EqualTo(propertyName, expression, opt_matchCase);
+};
+
+
+/**
+ * Creates a `<PropertyIsNotEqualTo>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!(string|number)} expression The value to compare.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @returns {!ol.format.ogc.filter.NotEqualTo} `<PropertyIsNotEqualTo>` operator.
+ * @api
+ */
+ol.format.ogc.filter.notEqualTo = function(propertyName, expression, opt_matchCase) {
+ return new ol.format.ogc.filter.NotEqualTo(propertyName, expression, opt_matchCase);
+};
+
+
+/**
+ * Creates a `<PropertyIsLessThan>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @returns {!ol.format.ogc.filter.LessThan} `<PropertyIsLessThan>` operator.
+ * @api
+ */
+ol.format.ogc.filter.lessThan = function(propertyName, expression) {
+ return new ol.format.ogc.filter.LessThan(propertyName, expression);
+};
+
+
+/**
+ * Creates a `<PropertyIsLessThanOrEqualTo>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @returns {!ol.format.ogc.filter.LessThanOrEqualTo} `<PropertyIsLessThanOrEqualTo>` operator.
+ * @api
+ */
+ol.format.ogc.filter.lessThanOrEqualTo = function(propertyName, expression) {
+ return new ol.format.ogc.filter.LessThanOrEqualTo(propertyName, expression);
+};
+
+
+/**
+ * Creates a `<PropertyIsGreaterThan>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @returns {!ol.format.ogc.filter.GreaterThan} `<PropertyIsGreaterThan>` operator.
+ * @api
+ */
+ol.format.ogc.filter.greaterThan = function(propertyName, expression) {
+ return new ol.format.ogc.filter.GreaterThan(propertyName, expression);
+};
+
+
+/**
+ * Creates a `<PropertyIsGreaterThanOrEqualTo>` comparison operator.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @returns {!ol.format.ogc.filter.GreaterThanOrEqualTo} `<PropertyIsGreaterThanOrEqualTo>` operator.
+ * @api
+ */
+ol.format.ogc.filter.greaterThanOrEqualTo = function(propertyName, expression) {
+ return new ol.format.ogc.filter.GreaterThanOrEqualTo(propertyName, expression);
+};
+
+
+/**
+ * Creates a `<PropertyIsNull>` comparison operator to test whether a property value
+ * is null.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @returns {!ol.format.ogc.filter.IsNull} `<PropertyIsNull>` operator.
+ * @api
+ */
+ol.format.ogc.filter.isNull = function(propertyName) {
+ return new ol.format.ogc.filter.IsNull(propertyName);
+};
+
+
+/**
+ * Creates a `<PropertyIsBetween>` comparison operator to test whether an expression
+ * value lies within a range given by a lower and upper bound (inclusive).
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} lowerBoundary The lower bound of the range.
+ * @param {!number} upperBoundary The upper bound of the range.
+ * @returns {!ol.format.ogc.filter.IsBetween} `<PropertyIsBetween>` operator.
+ * @api
+ */
+ol.format.ogc.filter.between = function(propertyName, lowerBoundary, upperBoundary) {
+ return new ol.format.ogc.filter.IsBetween(propertyName, lowerBoundary, upperBoundary);
+};
+
+
+/**
+ * Represents a `<PropertyIsLike>` comparison operator that matches a string property
+ * value against a text pattern.
+ *
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!string} pattern Text pattern.
+ * @param {string=} opt_wildCard Pattern character which matches any sequence of
+ * zero or more string characters. Default is '*'.
+ * @param {string=} opt_singleChar pattern character which matches any single
+ * string character. Default is '.'.
+ * @param {string=} opt_escapeChar Escape character which can be used to escape
+ * the pattern characters. Default is '!'.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @returns {!ol.format.ogc.filter.IsLike} `<PropertyIsLike>` operator.
+ * @api
+ */
+ol.format.ogc.filter.like = function(propertyName, pattern,
+ opt_wildCard, opt_singleChar, opt_escapeChar, opt_matchCase) {
+ return new ol.format.ogc.filter.IsLike(propertyName, pattern,
+ opt_wildCard, opt_singleChar, opt_escapeChar, opt_matchCase);
+};
+
+
+/**
+ * @classdesc
+ * Abstract class; normally only used for creating subclasses and not instantiated in apps.
+ * Base class for WFS GetFeature filters.
+ *
+ * @constructor
+ * @param {!string} tagName The XML tag name for this filter.
+ * @struct
+ * @api
+ */
+ol.format.ogc.filter.Filter = function(tagName) {
+
+ /**
+ * @private
+ * @type {!string}
+ */
+ this.tagName_ = tagName;
+};
+
+/**
+ * The XML tag name for a filter.
+ * @returns {!string} Name.
+ */
+ol.format.ogc.filter.Filter.prototype.getTagName = function() {
+ return this.tagName_;
+};
+
+
+// Logical filters
+
+
+/**
+ * @classdesc
+ * Abstract class; normally only used for creating subclasses and not instantiated in apps.
+ * Base class for WFS GetFeature logical filters.
+ *
+ * @constructor
+ * @param {!string} tagName The XML tag name for this filter.
+ * @extends {ol.format.ogc.filter.Filter}
+ */
+ol.format.ogc.filter.Logical = function(tagName) {
+ ol.format.ogc.filter.Filter.call(this, tagName);
+};
+ol.inherits(ol.format.ogc.filter.Logical, ol.format.ogc.filter.Filter);
+
+
+/**
+ * @classdesc
+ * Abstract class; normally only used for creating subclasses and not instantiated in apps.
+ * Base class for WFS GetFeature binary logical filters.
+ *
+ * @constructor
+ * @param {!string} tagName The XML tag name for this filter.
+ * @param {!ol.format.ogc.filter.Filter} conditionA First filter condition.
+ * @param {!ol.format.ogc.filter.Filter} conditionB Second filter condition.
+ * @extends {ol.format.ogc.filter.Logical}
+ */
+ol.format.ogc.filter.LogicalBinary = function(tagName, conditionA, conditionB) {
+
+ ol.format.ogc.filter.Logical.call(this, tagName);
+
+ /**
+ * @public
+ * @type {!ol.format.ogc.filter.Filter}
+ */
+ this.conditionA = conditionA;
+
+ /**
+ * @public
+ * @type {!ol.format.ogc.filter.Filter}
+ */
+ this.conditionB = conditionB;
+
+};
+ol.inherits(ol.format.ogc.filter.LogicalBinary, ol.format.ogc.filter.Logical);
+
+
+/**
+ * @classdesc
+ * Represents a logical `<And>` operator between two filter conditions.
+ *
+ * @constructor
+ * @param {!ol.format.ogc.filter.Filter} conditionA First filter condition.
+ * @param {!ol.format.ogc.filter.Filter} conditionB Second filter condition.
+ * @extends {ol.format.ogc.filter.LogicalBinary}
+ * @api
+ */
+ol.format.ogc.filter.And = function(conditionA, conditionB) {
+ ol.format.ogc.filter.LogicalBinary.call(this, 'And', conditionA, conditionB);
+};
+ol.inherits(ol.format.ogc.filter.And, ol.format.ogc.filter.LogicalBinary);
+
+
+/**
+ * @classdesc
+ * Represents a logical `<Or>` operator between two filter conditions.
+ *
+ * @constructor
+ * @param {!ol.format.ogc.filter.Filter} conditionA First filter condition.
+ * @param {!ol.format.ogc.filter.Filter} conditionB Second filter condition.
+ * @extends {ol.format.ogc.filter.LogicalBinary}
+ * @api
+ */
+ol.format.ogc.filter.Or = function(conditionA, conditionB) {
+ ol.format.ogc.filter.LogicalBinary.call(this, 'Or', conditionA, conditionB);
+};
+ol.inherits(ol.format.ogc.filter.Or, ol.format.ogc.filter.LogicalBinary);
+
+
+/**
+ * @classdesc
+ * Represents a logical `<Not>` operator for a filter condition.
+ *
+ * @constructor
+ * @param {!ol.format.ogc.filter.Filter} condition Filter condition.
+ * @extends {ol.format.ogc.filter.Logical}
+ * @api
+ */
+ol.format.ogc.filter.Not = function(condition) {
+
+ ol.format.ogc.filter.Logical.call(this, 'Not');
+
+ /**
+ * @public
+ * @type {!ol.format.ogc.filter.Filter}
+ */
+ this.condition = condition;
+};
+ol.inherits(ol.format.ogc.filter.Not, ol.format.ogc.filter.Logical);
+
+
+// Spatial filters
+
+
+/**
+ * @classdesc
+ * Represents a `<BBOX>` operator to test whether a geometry-valued property
+ * intersects a fixed bounding box
+ *
+ * @constructor
+ * @param {!string} geometryName Geometry name to use.
+ * @param {!ol.Extent} extent Extent.
+ * @param {string=} opt_srsName SRS name. No srsName attribute will be
+ * set on geometries when this is not provided.
+ * @extends {ol.format.ogc.filter.Filter}
+ * @api
+ */
+ol.format.ogc.filter.Bbox = function(geometryName, extent, opt_srsName) {
+
+ ol.format.ogc.filter.Filter.call(this, 'BBOX');
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.geometryName = geometryName;
+
+ /**
+ * @public
+ * @type {ol.Extent}
+ */
+ this.extent = extent;
+
+ /**
+ * @public
+ * @type {string|undefined}
+ */
+ this.srsName = opt_srsName;
+};
+ol.inherits(ol.format.ogc.filter.Bbox, ol.format.ogc.filter.Filter);
+
+
+// Property comparison filters
+
+
+/**
+ * @classdesc
+ * Abstract class; normally only used for creating subclasses and not instantiated in apps.
+ * Base class for WFS GetFeature property comparison filters.
+ *
+ * @constructor
+ * @param {!string} tagName The XML tag name for this filter.
+ * @param {!string} propertyName Name of the context property to compare.
+ * @extends {ol.format.ogc.filter.Filter}
+ * @api
+ */
+ol.format.ogc.filter.Comparison = function(tagName, propertyName) {
+
+ ol.format.ogc.filter.Filter.call(this, tagName);
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.propertyName = propertyName;
+};
+ol.inherits(ol.format.ogc.filter.Comparison, ol.format.ogc.filter.Filter);
+
+
+/**
+ * @classdesc
+ * Abstract class; normally only used for creating subclasses and not instantiated in apps.
+ * Base class for WFS GetFeature property binary comparison filters.
+ *
+ * @constructor
+ * @param {!string} tagName The XML tag name for this filter.
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!(string|number)} expression The value to compare.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @extends {ol.format.ogc.filter.Comparison}
+ * @api
+ */
+ol.format.ogc.filter.ComparisonBinary = function(
+ tagName, propertyName, expression, opt_matchCase) {
+
+ ol.format.ogc.filter.Comparison.call(this, tagName, propertyName);
+
+ /**
+ * @public
+ * @type {!(string|number)}
+ */
+ this.expression = expression;
+
+ /**
+ * @public
+ * @type {boolean|undefined}
+ */
+ this.matchCase = opt_matchCase;
+};
+ol.inherits(ol.format.ogc.filter.ComparisonBinary, ol.format.ogc.filter.Comparison);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsEqualTo>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!(string|number)} expression The value to compare.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.EqualTo = function(propertyName, expression, opt_matchCase) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsEqualTo', propertyName, expression, opt_matchCase);
+};
+ol.inherits(ol.format.ogc.filter.EqualTo, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsNotEqualTo>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!(string|number)} expression The value to compare.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.NotEqualTo = function(propertyName, expression, opt_matchCase) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsNotEqualTo', propertyName, expression, opt_matchCase);
+};
+ol.inherits(ol.format.ogc.filter.NotEqualTo, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsLessThan>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.LessThan = function(propertyName, expression) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsLessThan', propertyName, expression);
+};
+ol.inherits(ol.format.ogc.filter.LessThan, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsLessThanOrEqualTo>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.LessThanOrEqualTo = function(propertyName, expression) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsLessThanOrEqualTo', propertyName, expression);
+};
+ol.inherits(ol.format.ogc.filter.LessThanOrEqualTo, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsGreaterThan>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.GreaterThan = function(propertyName, expression) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsGreaterThan', propertyName, expression);
+};
+ol.inherits(ol.format.ogc.filter.GreaterThan, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsGreaterThanOrEqualTo>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} expression The value to compare.
+ * @extends {ol.format.ogc.filter.ComparisonBinary}
+ * @api
+ */
+ol.format.ogc.filter.GreaterThanOrEqualTo = function(propertyName, expression) {
+ ol.format.ogc.filter.ComparisonBinary.call(this, 'PropertyIsGreaterThanOrEqualTo', propertyName, expression);
+};
+ol.inherits(ol.format.ogc.filter.GreaterThanOrEqualTo, ol.format.ogc.filter.ComparisonBinary);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsNull>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @extends {ol.format.ogc.filter.Comparison}
+ * @api
+ */
+ol.format.ogc.filter.IsNull = function(propertyName) {
+ ol.format.ogc.filter.Comparison.call(this, 'PropertyIsNull', propertyName);
+};
+ol.inherits(ol.format.ogc.filter.IsNull, ol.format.ogc.filter.Comparison);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsBetween>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!number} lowerBoundary The lower bound of the range.
+ * @param {!number} upperBoundary The upper bound of the range.
+ * @extends {ol.format.ogc.filter.Comparison}
+ * @api
+ */
+ol.format.ogc.filter.IsBetween = function(propertyName, lowerBoundary, upperBoundary) {
+ ol.format.ogc.filter.Comparison.call(this, 'PropertyIsBetween', propertyName);
+
+ /**
+ * @public
+ * @type {!number}
+ */
+ this.lowerBoundary = lowerBoundary;
+
+ /**
+ * @public
+ * @type {!number}
+ */
+ this.upperBoundary = upperBoundary;
+};
+ol.inherits(ol.format.ogc.filter.IsBetween, ol.format.ogc.filter.Comparison);
+
+
+/**
+ * @classdesc
+ * Represents a `<PropertyIsLike>` comparison operator.
+ *
+ * @constructor
+ * @param {!string} propertyName Name of the context property to compare.
+ * @param {!string} pattern Text pattern.
+ * @param {string=} opt_wildCard Pattern character which matches any sequence of
+ * zero or more string characters. Default is '*'.
+ * @param {string=} opt_singleChar pattern character which matches any single
+ * string character. Default is '.'.
+ * @param {string=} opt_escapeChar Escape character which can be used to escape
+ * the pattern characters. Default is '!'.
+ * @param {boolean=} opt_matchCase Case-sensitive?
+ * @extends {ol.format.ogc.filter.Comparison}
+ * @api
+ */
+ol.format.ogc.filter.IsLike = function(propertyName, pattern,
+ opt_wildCard, opt_singleChar, opt_escapeChar, opt_matchCase) {
+ ol.format.ogc.filter.Comparison.call(this, 'PropertyIsLike', propertyName);
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.pattern = pattern;
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.wildCard = (opt_wildCard !== undefined) ? opt_wildCard : '*';
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.singleChar = (opt_singleChar !== undefined) ? opt_singleChar : '.';
+
+ /**
+ * @public
+ * @type {!string}
+ */
+ this.escapeChar = (opt_escapeChar !== undefined) ? opt_escapeChar : '!';
+
+ /**
+ * @public
+ * @type {boolean|undefined}
+ */
+ this.matchCase = opt_matchCase;
+};
+ol.inherits(ol.format.ogc.filter.IsLike, ol.format.ogc.filter.Comparison);
+
+// FIXME add typedef for stack state objects
+goog.provide('ol.format.OSMXML');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading data in the
+ * [OSMXML format](http://wiki.openstreetmap.org/wiki/OSM_XML).
+ *
+ * @constructor
+ * @extends {ol.format.XMLFeature}
+ * @api stable
+ */
+ol.format.OSMXML = function() {
+ ol.format.XMLFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get('EPSG:4326');
+};
+ol.inherits(ol.format.OSMXML, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.OSMXML.EXTENSIONS_ = ['.osm'];
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.OSMXML.prototype.getExtensions = function() {
+ return ol.format.OSMXML.EXTENSIONS_;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.OSMXML.readNode_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'node', 'localName should be node');
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+ var state = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ var id = node.getAttribute('id');
+ /** @type {ol.Coordinate} */
+ var coordinates = [
+ parseFloat(node.getAttribute('lon')),
+ parseFloat(node.getAttribute('lat'))
+ ];
+ state.nodes[id] = coordinates;
+
+ var values = ol.xml.pushParseAndPop({
+ tags: {}
+ }, ol.format.OSMXML.NODE_PARSERS_, node, objectStack);
+ if (!ol.object.isEmpty(values.tags)) {
+ var geometry = new ol.geom.Point(coordinates);
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ var feature = new ol.Feature(geometry);
+ feature.setId(id);
+ feature.setProperties(values.tags);
+ state.features.push(feature);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.OSMXML.readWay_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'way', 'localName should be way');
+ var options = /** @type {olx.format.ReadOptions} */ (objectStack[0]);
+ var id = node.getAttribute('id');
+ var values = ol.xml.pushParseAndPop({
+ ndrefs: [],
+ tags: {}
+ }, ol.format.OSMXML.WAY_PARSERS_, node, objectStack);
+ var state = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ /** @type {Array.<number>} */
+ var flatCoordinates = [];
+ for (var i = 0, ii = values.ndrefs.length; i < ii; i++) {
+ var point = state.nodes[values.ndrefs[i]];
+ ol.array.extend(flatCoordinates, point);
+ }
+ var geometry;
+ if (values.ndrefs[0] == values.ndrefs[values.ndrefs.length - 1]) {
+ // closed way
+ geometry = new ol.geom.Polygon(null);
+ geometry.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates,
+ [flatCoordinates.length]);
+ } else {
+ geometry = new ol.geom.LineString(null);
+ geometry.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates);
+ }
+ ol.format.Feature.transformWithOptions(geometry, false, options);
+ var feature = new ol.Feature(geometry);
+ feature.setId(id);
+ feature.setProperties(values.tags);
+ state.features.push(feature);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.OSMXML.readNd_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'nd', 'localName should be nd');
+ var values = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ values.ndrefs.push(node.getAttribute('ref'));
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.OSMXML.readTag_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'tag', 'localName should be tag');
+ var values = /** @type {Object} */ (objectStack[objectStack.length - 1]);
+ values.tags[node.getAttribute('k')] = node.getAttribute('v');
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.format.OSMXML.NAMESPACE_URIS_ = [
+ null
+];
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OSMXML.WAY_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OSMXML.NAMESPACE_URIS_, {
+ 'nd': ol.format.OSMXML.readNd_,
+ 'tag': ol.format.OSMXML.readTag_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OSMXML.PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OSMXML.NAMESPACE_URIS_, {
+ 'node': ol.format.OSMXML.readNode_,
+ 'way': ol.format.OSMXML.readWay_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OSMXML.NODE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OSMXML.NAMESPACE_URIS_, {
+ 'tag': ol.format.OSMXML.readTag_
+ });
+
+
+/**
+ * Read all features from an OSM source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.OSMXML.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.OSMXML.prototype.readFeaturesFromNode = function(node, opt_options) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var options = this.getReadOptions(node, opt_options);
+ if (node.localName == 'osm') {
+ var state = ol.xml.pushParseAndPop({
+ nodes: {},
+ features: []
+ }, ol.format.OSMXML.PARSERS_, node, [options]);
+ if (state.features) {
+ return state.features;
+ }
+ }
+ return [];
+};
+
+
+/**
+ * Read the projection from an OSM source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.OSMXML.prototype.readProjection;
+
+goog.provide('ol.format.XLink');
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.XLink.NAMESPACE_URI = 'http://www.w3.org/1999/xlink';
+
+
+/**
+ * @param {Node} node Node.
+ * @return {boolean|undefined} Boolean.
+ */
+ol.format.XLink.readHref = function(node) {
+ return node.getAttributeNS(ol.format.XLink.NAMESPACE_URI, 'href');
+};
+
+goog.provide('ol.format.XML');
+
+goog.require('goog.asserts');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Generic format for reading non-feature XML data
+ *
+ * @constructor
+ * @struct
+ */
+ol.format.XML = function() {
+};
+
+
+/**
+ * @param {Document|Node|string} source Source.
+ * @return {Object} The parsed result.
+ */
+ol.format.XML.prototype.read = function(source) {
+ if (ol.xml.isDocument(source)) {
+ return this.readFromDocument(/** @type {Document} */ (source));
+ } else if (ol.xml.isNode(source)) {
+ return this.readFromNode(/** @type {Node} */ (source));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readFromDocument(doc);
+ } else {
+ goog.asserts.fail();
+ return null;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {Object}
+ */
+ol.format.XML.prototype.readFromDocument = goog.abstractMethod;
+
+
+/**
+ * @param {Node} node Node.
+ * @return {Object}
+ */
+ol.format.XML.prototype.readFromNode = goog.abstractMethod;
+
+goog.provide('ol.format.OWS');
+
+goog.require('goog.asserts');
+goog.require('ol.format.XLink');
+goog.require('ol.format.XML');
+goog.require('ol.format.XSD');
+goog.require('ol.xml');
+
+
+/**
+ * @constructor
+ * @extends {ol.format.XML}
+ */
+ol.format.OWS = function() {
+ ol.format.XML.call(this);
+};
+ol.inherits(ol.format.OWS, ol.format.XML);
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {Object} OWS object.
+ */
+ol.format.OWS.prototype.readFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readFromNode(n);
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {Object} OWS object.
+ */
+ol.format.OWS.prototype.readFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var owsObject = ol.xml.pushParseAndPop({},
+ ol.format.OWS.PARSERS_, node, []);
+ return owsObject ? owsObject : null;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The address.
+ */
+ol.format.OWS.readAddress_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Address',
+ 'localName should be Address');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.ADDRESS_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The values.
+ */
+ol.format.OWS.readAllowedValues_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'AllowedValues',
+ 'localName should be AllowedValues');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.ALLOWED_VALUES_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The constraint.
+ */
+ol.format.OWS.readConstraint_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Constraint',
+ 'localName should be Constraint');
+ var name = node.getAttribute('name');
+ if (!name) {
+ return undefined;
+ }
+ return ol.xml.pushParseAndPop({'name': name},
+ ol.format.OWS.CONSTRAINT_PARSERS_, node,
+ objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The contact info.
+ */
+ol.format.OWS.readContactInfo_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ContactInfo',
+ 'localName should be ContactInfo');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.CONTACT_INFO_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The DCP.
+ */
+ol.format.OWS.readDcp_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'DCP', 'localName should be DCP');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.DCP_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The GET object.
+ */
+ol.format.OWS.readGet_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Get', 'localName should be Get');
+ var href = ol.format.XLink.readHref(node);
+ if (!href) {
+ return undefined;
+ }
+ return ol.xml.pushParseAndPop({'href': href},
+ ol.format.OWS.REQUEST_METHOD_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The HTTP object.
+ */
+ol.format.OWS.readHttp_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'HTTP', 'localName should be HTTP');
+ return ol.xml.pushParseAndPop({}, ol.format.OWS.HTTP_PARSERS_,
+ node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The operation.
+ */
+ol.format.OWS.readOperation_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Operation',
+ 'localName should be Operation');
+ var name = node.getAttribute('name');
+ var value = ol.xml.pushParseAndPop({},
+ ol.format.OWS.OPERATION_PARSERS_, node, objectStack);
+ if (!value) {
+ return undefined;
+ }
+ var object = /** @type {Object} */
+ (objectStack[objectStack.length - 1]);
+ goog.asserts.assert(goog.isObject(object), 'object should be an Object');
+ object[name] = value;
+
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The operations metadata.
+ */
+ol.format.OWS.readOperationsMetadata_ = function(node,
+ objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'OperationsMetadata',
+ 'localName should be OperationsMetadata');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.OPERATIONS_METADATA_PARSERS_, node,
+ objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The phone.
+ */
+ol.format.OWS.readPhone_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Phone', 'localName should be Phone');
+ return ol.xml.pushParseAndPop({},
+ ol.format.OWS.PHONE_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The service identification.
+ */
+ol.format.OWS.readServiceIdentification_ = function(node,
+ objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ServiceIdentification',
+ 'localName should be ServiceIdentification');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.OWS.SERVICE_IDENTIFICATION_PARSERS_, node,
+ objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The service contact.
+ */
+ol.format.OWS.readServiceContact_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ServiceContact',
+ 'localName should be ServiceContact');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.OWS.SERVICE_CONTACT_PARSERS_, node,
+ objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} The service provider.
+ */
+ol.format.OWS.readServiceProvider_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ServiceProvider',
+ 'localName should be ServiceProvider');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.OWS.SERVICE_PROVIDER_PARSERS_, node,
+ objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {string|undefined} The value.
+ */
+ol.format.OWS.readValue_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Value', 'localName should be Value');
+ return ol.format.XSD.readString(node);
+};
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ * @private
+ */
+ol.format.OWS.NAMESPACE_URIS_ = [
+ null,
+ 'http://www.opengis.net/ows/1.1'
+];
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'ServiceIdentification': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readServiceIdentification_),
+ 'ServiceProvider': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readServiceProvider_),
+ 'OperationsMetadata': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readOperationsMetadata_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.ADDRESS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'DeliveryPoint': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'City': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'AdministrativeArea': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'PostalCode': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Country': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'ElectronicMailAddress': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.ALLOWED_VALUES_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Value': ol.xml.makeObjectPropertyPusher(ol.format.OWS.readValue_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.CONSTRAINT_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'AllowedValues': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readAllowedValues_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.CONTACT_INFO_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Phone': ol.xml.makeObjectPropertySetter(ol.format.OWS.readPhone_),
+ 'Address': ol.xml.makeObjectPropertySetter(ol.format.OWS.readAddress_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.DCP_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'HTTP': ol.xml.makeObjectPropertySetter(ol.format.OWS.readHttp_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.HTTP_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Get': ol.xml.makeObjectPropertyPusher(ol.format.OWS.readGet_),
+ 'Post': undefined // TODO
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.OPERATION_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'DCP': ol.xml.makeObjectPropertySetter(ol.format.OWS.readDcp_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.OPERATIONS_METADATA_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Operation': ol.format.OWS.readOperation_
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.PHONE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Voice': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Facsimile': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.REQUEST_METHOD_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Constraint': ol.xml.makeObjectPropertyPusher(
+ ol.format.OWS.readConstraint_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.SERVICE_CONTACT_PARSERS_ =
+ ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'IndividualName': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'PositionName': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'ContactInfo': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readContactInfo_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.SERVICE_IDENTIFICATION_PARSERS_ =
+ ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'Title': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'ServiceTypeVersion': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'ServiceType': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.OWS.SERVICE_PROVIDER_PARSERS_ =
+ ol.xml.makeStructureNS(
+ ol.format.OWS.NAMESPACE_URIS_, {
+ 'ProviderName': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'ProviderSite': ol.xml.makeObjectPropertySetter(ol.format.XLink.readHref),
+ 'ServiceContact': ol.xml.makeObjectPropertySetter(
+ ol.format.OWS.readServiceContact_)
+ });
+
+goog.provide('ol.geom.flat.flip');
+
+goog.require('goog.asserts');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @param {number=} opt_destOffset Destination offset.
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.geom.flat.flip.flipXY = function(flatCoordinates, offset, end, stride, opt_dest, opt_destOffset) {
+ var dest, destOffset;
+ if (opt_dest !== undefined) {
+ dest = opt_dest;
+ destOffset = opt_destOffset !== undefined ? opt_destOffset : 0;
+ } else {
+ goog.asserts.assert(opt_destOffset === undefined,
+ 'opt_destOffSet should be defined');
+ dest = [];
+ destOffset = 0;
+ }
+ var j = offset;
+ while (j < end) {
+ var x = flatCoordinates[j++];
+ dest[destOffset++] = flatCoordinates[j++];
+ dest[destOffset++] = x;
+ for (var k = 2; k < stride; ++k) {
+ dest[destOffset++] = flatCoordinates[j++];
+ }
+ }
+ dest.length = destOffset;
+ return dest;
+};
+
+goog.provide('ol.format.Polyline');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.TextFeature');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.flip');
+goog.require('ol.geom.flat.inflate');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the Encoded
+ * Polyline Algorithm Format.
+ *
+ * @constructor
+ * @extends {ol.format.TextFeature}
+ * @param {olx.format.PolylineOptions=} opt_options
+ * Optional configuration object.
+ * @api stable
+ */
+ol.format.Polyline = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.TextFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get('EPSG:4326');
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.factor_ = options.factor ? options.factor : 1e5;
+
+ /**
+ * @private
+ * @type {ol.geom.GeometryLayout}
+ */
+ this.geometryLayout_ = options.geometryLayout ?
+ options.geometryLayout : ol.geom.GeometryLayout.XY;
+};
+ol.inherits(ol.format.Polyline, ol.format.TextFeature);
+
+
+/**
+ * Encode a list of n-dimensional points and return an encoded string
+ *
+ * Attention: This function will modify the passed array!
+ *
+ * @param {Array.<number>} numbers A list of n-dimensional points.
+ * @param {number} stride The number of dimension of the points in the list.
+ * @param {number=} opt_factor The factor by which the numbers will be
+ * multiplied. The remaining decimal places will get rounded away.
+ * Default is `1e5`.
+ * @return {string} The encoded string.
+ * @api
+ */
+ol.format.Polyline.encodeDeltas = function(numbers, stride, opt_factor) {
+ var factor = opt_factor ? opt_factor : 1e5;
+ var d;
+
+ var lastNumbers = new Array(stride);
+ for (d = 0; d < stride; ++d) {
+ lastNumbers[d] = 0;
+ }
+
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii;) {
+ for (d = 0; d < stride; ++d, ++i) {
+ var num = numbers[i];
+ var delta = num - lastNumbers[d];
+ lastNumbers[d] = num;
+
+ numbers[i] = delta;
+ }
+ }
+
+ return ol.format.Polyline.encodeFloats(numbers, factor);
+};
+
+
+/**
+ * Decode a list of n-dimensional points from an encoded string
+ *
+ * @param {string} encoded An encoded string.
+ * @param {number} stride The number of dimension of the points in the
+ * encoded string.
+ * @param {number=} opt_factor The factor by which the resulting numbers will
+ * be divided. Default is `1e5`.
+ * @return {Array.<number>} A list of n-dimensional points.
+ * @api
+ */
+ol.format.Polyline.decodeDeltas = function(encoded, stride, opt_factor) {
+ var factor = opt_factor ? opt_factor : 1e5;
+ var d;
+
+ /** @type {Array.<number>} */
+ var lastNumbers = new Array(stride);
+ for (d = 0; d < stride; ++d) {
+ lastNumbers[d] = 0;
+ }
+
+ var numbers = ol.format.Polyline.decodeFloats(encoded, factor);
+
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii;) {
+ for (d = 0; d < stride; ++d, ++i) {
+ lastNumbers[d] += numbers[i];
+
+ numbers[i] = lastNumbers[d];
+ }
+ }
+
+ return numbers;
+};
+
+
+/**
+ * Encode a list of floating point numbers and return an encoded string
+ *
+ * Attention: This function will modify the passed array!
+ *
+ * @param {Array.<number>} numbers A list of floating point numbers.
+ * @param {number=} opt_factor The factor by which the numbers will be
+ * multiplied. The remaining decimal places will get rounded away.
+ * Default is `1e5`.
+ * @return {string} The encoded string.
+ * @api
+ */
+ol.format.Polyline.encodeFloats = function(numbers, opt_factor) {
+ var factor = opt_factor ? opt_factor : 1e5;
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii; ++i) {
+ numbers[i] = Math.round(numbers[i] * factor);
+ }
+
+ return ol.format.Polyline.encodeSignedIntegers(numbers);
+};
+
+
+/**
+ * Decode a list of floating point numbers from an encoded string
+ *
+ * @param {string} encoded An encoded string.
+ * @param {number=} opt_factor The factor by which the result will be divided.
+ * Default is `1e5`.
+ * @return {Array.<number>} A list of floating point numbers.
+ * @api
+ */
+ol.format.Polyline.decodeFloats = function(encoded, opt_factor) {
+ var factor = opt_factor ? opt_factor : 1e5;
+ var numbers = ol.format.Polyline.decodeSignedIntegers(encoded);
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii; ++i) {
+ numbers[i] /= factor;
+ }
+ return numbers;
+};
+
+
+/**
+ * Encode a list of signed integers and return an encoded string
+ *
+ * Attention: This function will modify the passed array!
+ *
+ * @param {Array.<number>} numbers A list of signed integers.
+ * @return {string} The encoded string.
+ */
+ol.format.Polyline.encodeSignedIntegers = function(numbers) {
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii; ++i) {
+ var num = numbers[i];
+ numbers[i] = (num < 0) ? ~(num << 1) : (num << 1);
+ }
+ return ol.format.Polyline.encodeUnsignedIntegers(numbers);
+};
+
+
+/**
+ * Decode a list of signed integers from an encoded string
+ *
+ * @param {string} encoded An encoded string.
+ * @return {Array.<number>} A list of signed integers.
+ */
+ol.format.Polyline.decodeSignedIntegers = function(encoded) {
+ var numbers = ol.format.Polyline.decodeUnsignedIntegers(encoded);
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii; ++i) {
+ var num = numbers[i];
+ numbers[i] = (num & 1) ? ~(num >> 1) : (num >> 1);
+ }
+ return numbers;
+};
+
+
+/**
+ * Encode a list of unsigned integers and return an encoded string
+ *
+ * @param {Array.<number>} numbers A list of unsigned integers.
+ * @return {string} The encoded string.
+ */
+ol.format.Polyline.encodeUnsignedIntegers = function(numbers) {
+ var encoded = '';
+ var i, ii;
+ for (i = 0, ii = numbers.length; i < ii; ++i) {
+ encoded += ol.format.Polyline.encodeUnsignedInteger(numbers[i]);
+ }
+ return encoded;
+};
+
+
+/**
+ * Decode a list of unsigned integers from an encoded string
+ *
+ * @param {string} encoded An encoded string.
+ * @return {Array.<number>} A list of unsigned integers.
+ */
+ol.format.Polyline.decodeUnsignedIntegers = function(encoded) {
+ var numbers = [];
+ var current = 0;
+ var shift = 0;
+ var i, ii;
+ for (i = 0, ii = encoded.length; i < ii; ++i) {
+ var b = encoded.charCodeAt(i) - 63;
+ current |= (b & 0x1f) << shift;
+ if (b < 0x20) {
+ numbers.push(current);
+ current = 0;
+ shift = 0;
+ } else {
+ shift += 5;
+ }
+ }
+ return numbers;
+};
+
+
+/**
+ * Encode one single unsigned integer and return an encoded string
+ *
+ * @param {number} num Unsigned integer that should be encoded.
+ * @return {string} The encoded string.
+ */
+ol.format.Polyline.encodeUnsignedInteger = function(num) {
+ var value, encoded = '';
+ while (num >= 0x20) {
+ value = (0x20 | (num & 0x1f)) + 63;
+ encoded += String.fromCharCode(value);
+ num >>= 5;
+ }
+ value = num + 63;
+ encoded += String.fromCharCode(value);
+ return encoded;
+};
+
+
+/**
+ * Read the feature from the Polyline source. The coordinates are assumed to be
+ * in two dimensions and in latitude, longitude order.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api stable
+ */
+ol.format.Polyline.prototype.readFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.readFeatureFromText = function(text, opt_options) {
+ var geometry = this.readGeometryFromText(text, opt_options);
+ return new ol.Feature(geometry);
+};
+
+
+/**
+ * Read the feature from the source. As Polyline sources contain a single
+ * feature, this will return the feature in an array.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.Polyline.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.readFeaturesFromText = function(text, opt_options) {
+ var feature = this.readFeatureFromText(text, opt_options);
+ return [feature];
+};
+
+
+/**
+ * Read the geometry from the source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.geom.Geometry} Geometry.
+ * @api stable
+ */
+ol.format.Polyline.prototype.readGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.readGeometryFromText = function(text, opt_options) {
+ var stride = ol.geom.SimpleGeometry.getStrideForLayout(this.geometryLayout_);
+ var flatCoordinates = ol.format.Polyline.decodeDeltas(
+ text, stride, this.factor_);
+ ol.geom.flat.flip.flipXY(
+ flatCoordinates, 0, flatCoordinates.length, stride, flatCoordinates);
+ var coordinates = ol.geom.flat.inflate.coordinates(
+ flatCoordinates, 0, flatCoordinates.length, stride);
+
+ return /** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(
+ new ol.geom.LineString(coordinates, this.geometryLayout_), false,
+ this.adaptOptions(opt_options)));
+};
+
+
+/**
+ * Read the projection from a Polyline source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.Polyline.prototype.readProjection;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.writeFeatureText = function(feature, opt_options) {
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ return this.writeGeometryText(geometry, opt_options);
+ } else {
+ goog.asserts.fail('geometry needs to be defined');
+ return '';
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.writeFeaturesText = function(features, opt_options) {
+ goog.asserts.assert(features.length == 1,
+ 'features array should have 1 item');
+ return this.writeFeatureText(features[0], opt_options);
+};
+
+
+/**
+ * Write a single geometry in Polyline format.
+ *
+ * @function
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} Geometry.
+ * @api stable
+ */
+ol.format.Polyline.prototype.writeGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.Polyline.prototype.writeGeometryText = function(geometry, opt_options) {
+ goog.asserts.assertInstanceof(geometry, ol.geom.LineString,
+ 'geometry should be an ol.geom.LineString');
+ geometry = /** @type {ol.geom.LineString} */
+ (ol.format.Feature.transformWithOptions(
+ geometry, true, this.adaptOptions(opt_options)));
+ var flatCoordinates = geometry.getFlatCoordinates();
+ var stride = geometry.getStride();
+ ol.geom.flat.flip.flipXY(
+ flatCoordinates, 0, flatCoordinates.length, stride, flatCoordinates);
+ return ol.format.Polyline.encodeDeltas(flatCoordinates, stride, this.factor_);
+};
+
+goog.provide('ol.format.TopoJSON');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.JSONFeature');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.object');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Feature format for reading data in the TopoJSON format.
+ *
+ * @constructor
+ * @extends {ol.format.JSONFeature}
+ * @param {olx.format.TopoJSONOptions=} opt_options Options.
+ * @api stable
+ */
+ol.format.TopoJSON = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.JSONFeature.call(this);
+
+ /**
+ * @inheritDoc
+ */
+ this.defaultDataProjection = ol.proj.get(
+ options.defaultDataProjection ?
+ options.defaultDataProjection : 'EPSG:4326');
+
+};
+ol.inherits(ol.format.TopoJSON, ol.format.JSONFeature);
+
+
+/**
+ * @const {Array.<string>}
+ * @private
+ */
+ol.format.TopoJSON.EXTENSIONS_ = ['.topojson'];
+
+
+/**
+ * Concatenate arcs into a coordinate array.
+ * @param {Array.<number>} indices Indices of arcs to concatenate. Negative
+ * values indicate arcs need to be reversed.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs (already
+ * transformed).
+ * @return {Array.<ol.Coordinate>} Coordinates array.
+ * @private
+ */
+ol.format.TopoJSON.concatenateArcs_ = function(indices, arcs) {
+ /** @type {Array.<ol.Coordinate>} */
+ var coordinates = [];
+ var index, arc;
+ var i, ii;
+ var j, jj;
+ for (i = 0, ii = indices.length; i < ii; ++i) {
+ index = indices[i];
+ if (i > 0) {
+ // splicing together arcs, discard last point
+ coordinates.pop();
+ }
+ if (index >= 0) {
+ // forward arc
+ arc = arcs[index];
+ } else {
+ // reverse arc
+ arc = arcs[~index].slice().reverse();
+ }
+ coordinates.push.apply(coordinates, arc);
+ }
+ // provide fresh copies of coordinate arrays
+ for (j = 0, jj = coordinates.length; j < jj; ++j) {
+ coordinates[j] = coordinates[j].slice();
+ }
+ return coordinates;
+};
+
+
+/**
+ * Create a point from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @return {ol.geom.Point} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readPointGeometry_ = function(object, scale, translate) {
+ var coordinates = object.coordinates;
+ if (scale && translate) {
+ ol.format.TopoJSON.transformVertex_(coordinates, scale, translate);
+ }
+ return new ol.geom.Point(coordinates);
+};
+
+
+/**
+ * Create a multi-point from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @return {ol.geom.MultiPoint} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readMultiPointGeometry_ = function(object, scale,
+ translate) {
+ var coordinates = object.coordinates;
+ var i, ii;
+ if (scale && translate) {
+ for (i = 0, ii = coordinates.length; i < ii; ++i) {
+ ol.format.TopoJSON.transformVertex_(coordinates[i], scale, translate);
+ }
+ }
+ return new ol.geom.MultiPoint(coordinates);
+};
+
+
+/**
+ * Create a linestring from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @return {ol.geom.LineString} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readLineStringGeometry_ = function(object, arcs) {
+ var coordinates = ol.format.TopoJSON.concatenateArcs_(object.arcs, arcs);
+ return new ol.geom.LineString(coordinates);
+};
+
+
+/**
+ * Create a multi-linestring from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @return {ol.geom.MultiLineString} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readMultiLineStringGeometry_ = function(object, arcs) {
+ var coordinates = [];
+ var i, ii;
+ for (i = 0, ii = object.arcs.length; i < ii; ++i) {
+ coordinates[i] = ol.format.TopoJSON.concatenateArcs_(object.arcs[i], arcs);
+ }
+ return new ol.geom.MultiLineString(coordinates);
+};
+
+
+/**
+ * Create a polygon from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @return {ol.geom.Polygon} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readPolygonGeometry_ = function(object, arcs) {
+ var coordinates = [];
+ var i, ii;
+ for (i = 0, ii = object.arcs.length; i < ii; ++i) {
+ coordinates[i] = ol.format.TopoJSON.concatenateArcs_(object.arcs[i], arcs);
+ }
+ return new ol.geom.Polygon(coordinates);
+};
+
+
+/**
+ * Create a multi-polygon from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @return {ol.geom.MultiPolygon} Geometry.
+ * @private
+ */
+ol.format.TopoJSON.readMultiPolygonGeometry_ = function(object, arcs) {
+ var coordinates = [];
+ var polyArray, ringCoords, j, jj;
+ var i, ii;
+ for (i = 0, ii = object.arcs.length; i < ii; ++i) {
+ // for each polygon
+ polyArray = object.arcs[i];
+ ringCoords = [];
+ for (j = 0, jj = polyArray.length; j < jj; ++j) {
+ // for each ring
+ ringCoords[j] = ol.format.TopoJSON.concatenateArcs_(polyArray[j], arcs);
+ }
+ coordinates[i] = ringCoords;
+ }
+ return new ol.geom.MultiPolygon(coordinates);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TopoJSON.prototype.getExtensions = function() {
+ return ol.format.TopoJSON.EXTENSIONS_;
+};
+
+
+/**
+ * Create features from a TopoJSON GeometryCollection object.
+ *
+ * @param {TopoJSONGeometryCollection} collection TopoJSON Geometry
+ * object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Array of features.
+ * @private
+ */
+ol.format.TopoJSON.readFeaturesFromGeometryCollection_ = function(
+ collection, arcs, scale, translate, opt_options) {
+ var geometries = collection.geometries;
+ var features = [];
+ var i, ii;
+ for (i = 0, ii = geometries.length; i < ii; ++i) {
+ features[i] = ol.format.TopoJSON.readFeatureFromGeometry_(
+ geometries[i], arcs, scale, translate, opt_options);
+ }
+ return features;
+};
+
+
+/**
+ * Create a feature from a TopoJSON geometry object.
+ *
+ * @param {TopoJSONGeometry} object TopoJSON geometry object.
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @private
+ */
+ol.format.TopoJSON.readFeatureFromGeometry_ = function(object, arcs,
+ scale, translate, opt_options) {
+ var geometry;
+ var type = object.type;
+ var geometryReader = ol.format.TopoJSON.GEOMETRY_READERS_[type];
+ goog.asserts.assert(geometryReader, 'geometryReader should be defined');
+ if ((type === 'Point') || (type === 'MultiPoint')) {
+ geometry = geometryReader(object, scale, translate);
+ } else {
+ geometry = geometryReader(object, arcs);
+ }
+ var feature = new ol.Feature();
+ feature.setGeometry(/** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, false, opt_options)));
+ if (object.id !== undefined) {
+ feature.setId(object.id);
+ }
+ if (object.properties) {
+ feature.setProperties(object.properties);
+ }
+ return feature;
+};
+
+
+/**
+ * Read all features from a TopoJSON source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.TopoJSON.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.TopoJSON.prototype.readFeaturesFromObject = function(
+ object, opt_options) {
+ if (object.type == 'Topology') {
+ var topoJSONTopology = /** @type {TopoJSONTopology} */ (object);
+ var transform, scale = null, translate = null;
+ if (topoJSONTopology.transform) {
+ transform = topoJSONTopology.transform;
+ scale = transform.scale;
+ translate = transform.translate;
+ }
+ var arcs = topoJSONTopology.arcs;
+ if (transform) {
+ ol.format.TopoJSON.transformArcs_(arcs, scale, translate);
+ }
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ var topoJSONFeatures = ol.object.getValues(topoJSONTopology.objects);
+ var i, ii;
+ var feature;
+ for (i = 0, ii = topoJSONFeatures.length; i < ii; ++i) {
+ if (topoJSONFeatures[i].type === 'GeometryCollection') {
+ feature = /** @type {TopoJSONGeometryCollection} */
+ (topoJSONFeatures[i]);
+ features.push.apply(features,
+ ol.format.TopoJSON.readFeaturesFromGeometryCollection_(
+ feature, arcs, scale, translate, opt_options));
+ } else {
+ feature = /** @type {TopoJSONGeometry} */
+ (topoJSONFeatures[i]);
+ features.push(ol.format.TopoJSON.readFeatureFromGeometry_(
+ feature, arcs, scale, translate, opt_options));
+ }
+ }
+ return features;
+ } else {
+ return [];
+ }
+};
+
+
+/**
+ * Apply a linear transform to array of arcs. The provided array of arcs is
+ * modified in place.
+ *
+ * @param {Array.<Array.<ol.Coordinate>>} arcs Array of arcs.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @private
+ */
+ol.format.TopoJSON.transformArcs_ = function(arcs, scale, translate) {
+ var i, ii;
+ for (i = 0, ii = arcs.length; i < ii; ++i) {
+ ol.format.TopoJSON.transformArc_(arcs[i], scale, translate);
+ }
+};
+
+
+/**
+ * Apply a linear transform to an arc. The provided arc is modified in place.
+ *
+ * @param {Array.<ol.Coordinate>} arc Arc.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @private
+ */
+ol.format.TopoJSON.transformArc_ = function(arc, scale, translate) {
+ var x = 0;
+ var y = 0;
+ var vertex;
+ var i, ii;
+ for (i = 0, ii = arc.length; i < ii; ++i) {
+ vertex = arc[i];
+ x += vertex[0];
+ y += vertex[1];
+ vertex[0] = x;
+ vertex[1] = y;
+ ol.format.TopoJSON.transformVertex_(vertex, scale, translate);
+ }
+};
+
+
+/**
+ * Apply a linear transform to a vertex. The provided vertex is modified in
+ * place.
+ *
+ * @param {ol.Coordinate} vertex Vertex.
+ * @param {Array.<number>} scale Scale for each dimension.
+ * @param {Array.<number>} translate Translation for each dimension.
+ * @private
+ */
+ol.format.TopoJSON.transformVertex_ = function(vertex, scale, translate) {
+ vertex[0] = vertex[0] * scale[0] + translate[0];
+ vertex[1] = vertex[1] * scale[1] + translate[1];
+};
+
+
+/**
+ * Read the projection from a TopoJSON source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} object Source.
+ * @return {ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.TopoJSON.prototype.readProjection = function(object) {
+ return this.defaultDataProjection;
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<string, function(TopoJSONGeometry, Array, ...Array): ol.geom.Geometry>}
+ */
+ol.format.TopoJSON.GEOMETRY_READERS_ = {
+ 'Point': ol.format.TopoJSON.readPointGeometry_,
+ 'LineString': ol.format.TopoJSON.readLineStringGeometry_,
+ 'Polygon': ol.format.TopoJSON.readPolygonGeometry_,
+ 'MultiPoint': ol.format.TopoJSON.readMultiPointGeometry_,
+ 'MultiLineString': ol.format.TopoJSON.readMultiLineStringGeometry_,
+ 'MultiPolygon': ol.format.TopoJSON.readMultiPolygonGeometry_
+};
+
+goog.provide('ol.format.WFS');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.format.GML3');
+goog.require('ol.format.GMLBase');
+goog.require('ol.format.ogc.filter');
+goog.require('ol.format.ogc.filter.Bbox');
+goog.require('ol.format.ogc.filter.ComparisonBinary');
+goog.require('ol.format.ogc.filter.LogicalBinary');
+goog.require('ol.format.ogc.filter.Not');
+goog.require('ol.format.ogc.filter.IsBetween');
+goog.require('ol.format.ogc.filter.IsNull');
+goog.require('ol.format.ogc.filter.IsLike');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.format.XSD');
+goog.require('ol.geom.Geometry');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Feature format for reading and writing data in the WFS format.
+ * By default, supports WFS version 1.1.0. You can pass a GML format
+ * as option if you want to read a WFS that contains GML2 (WFS 1.0.0).
+ * Also see {@link ol.format.GMLBase} which is used by this format.
+ *
+ * @constructor
+ * @param {olx.format.WFSOptions=} opt_options
+ * Optional configuration object.
+ * @extends {ol.format.XMLFeature}
+ * @api stable
+ */
+ol.format.WFS = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {Array.<string>|string|undefined}
+ */
+ this.featureType_ = options.featureType;
+
+ /**
+ * @private
+ * @type {Object.<string, string>|string|undefined}
+ */
+ this.featureNS_ = options.featureNS;
+
+ /**
+ * @private
+ * @type {ol.format.GMLBase}
+ */
+ this.gmlFormat_ = options.gmlFormat ?
+ options.gmlFormat : new ol.format.GML3();
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.schemaLocation_ = options.schemaLocation ?
+ options.schemaLocation : ol.format.WFS.SCHEMA_LOCATION;
+
+ ol.format.XMLFeature.call(this);
+};
+ol.inherits(ol.format.WFS, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.WFS.FEATURE_PREFIX = 'feature';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.WFS.XMLNS = 'http://www.w3.org/2000/xmlns/';
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.WFS.SCHEMA_LOCATION = 'http://www.opengis.net/wfs ' +
+ 'http://schemas.opengis.net/wfs/1.1.0/wfs.xsd';
+
+
+/**
+ * Read all features from a WFS FeatureCollection.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.WFS.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WFS.prototype.readFeaturesFromNode = function(node, opt_options) {
+ var context = /** @type {ol.XmlNodeStackItem} */ ({
+ 'featureType': this.featureType_,
+ 'featureNS': this.featureNS_
+ });
+ ol.object.assign(context, this.getReadOptions(node,
+ opt_options ? opt_options : {}));
+ var objectStack = [context];
+ this.gmlFormat_.FEATURE_COLLECTION_PARSERS[ol.format.GMLBase.GMLNS][
+ 'featureMember'] =
+ ol.xml.makeArrayPusher(ol.format.GMLBase.prototype.readFeaturesInternal);
+ var features = ol.xml.pushParseAndPop([],
+ this.gmlFormat_.FEATURE_COLLECTION_PARSERS, node,
+ objectStack, this.gmlFormat_);
+ if (!features) {
+ features = [];
+ }
+ return features;
+};
+
+
+/**
+ * Read transaction response of the source.
+ *
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.WFSTransactionResponse|undefined} Transaction response.
+ * @api stable
+ */
+ol.format.WFS.prototype.readTransactionResponse = function(source) {
+ if (ol.xml.isDocument(source)) {
+ return this.readTransactionResponseFromDocument(
+ /** @type {Document} */ (source));
+ } else if (ol.xml.isNode(source)) {
+ return this.readTransactionResponseFromNode(/** @type {Node} */ (source));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readTransactionResponseFromDocument(doc);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return undefined;
+ }
+};
+
+
+/**
+ * Read feature collection metadata of the source.
+ *
+ * @param {Document|Node|Object|string} source Source.
+ * @return {ol.WFSFeatureCollectionMetadata|undefined}
+ * FeatureCollection metadata.
+ * @api stable
+ */
+ol.format.WFS.prototype.readFeatureCollectionMetadata = function(source) {
+ if (ol.xml.isDocument(source)) {
+ return this.readFeatureCollectionMetadataFromDocument(
+ /** @type {Document} */ (source));
+ } else if (ol.xml.isNode(source)) {
+ return this.readFeatureCollectionMetadataFromNode(
+ /** @type {Node} */ (source));
+ } else if (typeof source === 'string') {
+ var doc = ol.xml.parse(source);
+ return this.readFeatureCollectionMetadataFromDocument(doc);
+ } else {
+ goog.asserts.fail('Unknown source type');
+ return undefined;
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {ol.WFSFeatureCollectionMetadata|undefined}
+ * FeatureCollection metadata.
+ */
+ol.format.WFS.prototype.readFeatureCollectionMetadataFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readFeatureCollectionMetadataFromNode(n);
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WFS.FEATURE_COLLECTION_PARSERS_ = {
+ 'http://www.opengis.net/gml': {
+ 'boundedBy': ol.xml.makeObjectPropertySetter(
+ ol.format.GMLBase.prototype.readGeometryElement, 'bounds')
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {ol.WFSFeatureCollectionMetadata|undefined}
+ * FeatureCollection metadata.
+ */
+ol.format.WFS.prototype.readFeatureCollectionMetadataFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'FeatureCollection',
+ 'localName should be FeatureCollection');
+ var result = {};
+ var value = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('numberOfFeatures'));
+ result['numberOfFeatures'] = value;
+ return ol.xml.pushParseAndPop(
+ /** @type {ol.WFSFeatureCollectionMetadata} */ (result),
+ ol.format.WFS.FEATURE_COLLECTION_PARSERS_, node, [], this.gmlFormat_);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WFS.TRANSACTION_SUMMARY_PARSERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'totalInserted': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'totalUpdated': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'totalDeleted': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Transaction Summary.
+ * @private
+ */
+ol.format.WFS.readTransactionSummary_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WFS.TRANSACTION_SUMMARY_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WFS.OGC_FID_PARSERS_ = {
+ 'http://www.opengis.net/ogc': {
+ 'FeatureId': ol.xml.makeArrayPusher(function(node, objectStack) {
+ return node.getAttribute('fid');
+ })
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ */
+ol.format.WFS.fidParser_ = function(node, objectStack) {
+ ol.xml.parseNode(ol.format.WFS.OGC_FID_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WFS.INSERT_RESULTS_PARSERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'Feature': ol.format.WFS.fidParser_
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Array.<string>|undefined} Insert results.
+ * @private
+ */
+ol.format.WFS.readInsertResults_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop(
+ [], ol.format.WFS.INSERT_RESULTS_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WFS.TRANSACTION_RESPONSE_PARSERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'TransactionSummary': ol.xml.makeObjectPropertySetter(
+ ol.format.WFS.readTransactionSummary_, 'transactionSummary'),
+ 'InsertResults': ol.xml.makeObjectPropertySetter(
+ ol.format.WFS.readInsertResults_, 'insertIds')
+ }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {ol.WFSTransactionResponse|undefined} Transaction response.
+ */
+ol.format.WFS.prototype.readTransactionResponseFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readTransactionResponseFromNode(n);
+ }
+ }
+ return undefined;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {ol.WFSTransactionResponse|undefined} Transaction response.
+ */
+ol.format.WFS.prototype.readTransactionResponseFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'TransactionResponse',
+ 'localName should be TransactionResponse');
+ return ol.xml.pushParseAndPop(
+ /** @type {ol.WFSTransactionResponse} */({}),
+ ol.format.WFS.TRANSACTION_RESPONSE_PARSERS_, node, []);
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.WFS.QUERY_SERIALIZERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'PropertyName': ol.xml.makeChildAppender(ol.format.XSD.writeStringTextNode)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeFeature_ = function(node, feature, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var featureType = context['featureType'];
+ var featureNS = context['featureNS'];
+ var child = ol.xml.createElementNS(featureNS, featureType);
+ node.appendChild(child);
+ ol.format.GML3.prototype.writeFeatureElement(child, feature, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {number|string} fid Feature identifier.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeOgcFidFilter_ = function(node, fid, objectStack) {
+ var filter = ol.xml.createElementNS('http://www.opengis.net/ogc', 'Filter');
+ var child = ol.xml.createElementNS('http://www.opengis.net/ogc', 'FeatureId');
+ filter.appendChild(child);
+ child.setAttribute('fid', fid);
+ node.appendChild(filter);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeDelete_ = function(node, feature, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ goog.asserts.assert(feature.getId() !== undefined, 'feature should have an id');
+ var featureType = context['featureType'];
+ var featurePrefix = context['featurePrefix'];
+ featurePrefix = featurePrefix ? featurePrefix :
+ ol.format.WFS.FEATURE_PREFIX;
+ var featureNS = context['featureNS'];
+ node.setAttribute('typeName', featurePrefix + ':' + featureType);
+ ol.xml.setAttributeNS(node, ol.format.WFS.XMLNS, 'xmlns:' + featurePrefix,
+ featureNS);
+ var fid = feature.getId();
+ if (fid !== undefined) {
+ ol.format.WFS.writeOgcFidFilter_(node, fid, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.Feature} feature Feature.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeUpdate_ = function(node, feature, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ goog.asserts.assert(feature.getId() !== undefined, 'feature should have an id');
+ var featureType = context['featureType'];
+ var featurePrefix = context['featurePrefix'];
+ featurePrefix = featurePrefix ? featurePrefix :
+ ol.format.WFS.FEATURE_PREFIX;
+ var featureNS = context['featureNS'];
+ node.setAttribute('typeName', featurePrefix + ':' + featureType);
+ ol.xml.setAttributeNS(node, ol.format.WFS.XMLNS, 'xmlns:' + featurePrefix,
+ featureNS);
+ var fid = feature.getId();
+ if (fid !== undefined) {
+ var keys = feature.getKeys();
+ var values = [];
+ for (var i = 0, ii = keys.length; i < ii; i++) {
+ var value = feature.get(keys[i]);
+ if (value !== undefined) {
+ values.push({name: keys[i], value: value});
+ }
+ }
+ ol.xml.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */ (
+ {node: node, 'srsName': context['srsName']}),
+ ol.format.WFS.TRANSACTION_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Property'), values,
+ objectStack);
+ ol.format.WFS.writeOgcFidFilter_(node, fid, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Object} pair Property name and value.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeProperty_ = function(node, pair, objectStack) {
+ var name = ol.xml.createElementNS('http://www.opengis.net/wfs', 'Name');
+ node.appendChild(name);
+ ol.format.XSD.writeStringTextNode(name, pair.name);
+ if (pair.value !== undefined && pair.value !== null) {
+ var value = ol.xml.createElementNS('http://www.opengis.net/wfs', 'Value');
+ node.appendChild(value);
+ if (pair.value instanceof ol.geom.Geometry) {
+ ol.format.GML3.prototype.writeGeometryElement(value,
+ pair.value, objectStack);
+ } else {
+ ol.format.XSD.writeStringTextNode(value, pair.value);
+ }
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {{vendorId: string, safeToIgnore: boolean, value: string}}
+ * nativeElement The native element.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeNative_ = function(node, nativeElement, objectStack) {
+ if (nativeElement.vendorId) {
+ node.setAttribute('vendorId', nativeElement.vendorId);
+ }
+ if (nativeElement.safeToIgnore !== undefined) {
+ node.setAttribute('safeToIgnore', nativeElement.safeToIgnore);
+ }
+ if (nativeElement.value !== undefined) {
+ ol.format.XSD.writeStringTextNode(node, nativeElement.value);
+ }
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.WFS.TRANSACTION_SERIALIZERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'Insert': ol.xml.makeChildAppender(ol.format.WFS.writeFeature_),
+ 'Update': ol.xml.makeChildAppender(ol.format.WFS.writeUpdate_),
+ 'Delete': ol.xml.makeChildAppender(ol.format.WFS.writeDelete_),
+ 'Property': ol.xml.makeChildAppender(ol.format.WFS.writeProperty_),
+ 'Native': ol.xml.makeChildAppender(ol.format.WFS.writeNative_)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {string} featureType Feature type.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeQuery_ = function(node, featureType, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var featurePrefix = context['featurePrefix'];
+ var featureNS = context['featureNS'];
+ var propertyNames = context['propertyNames'];
+ var srsName = context['srsName'];
+ var prefix = featurePrefix ? featurePrefix + ':' : '';
+ node.setAttribute('typeName', prefix + featureType);
+ if (srsName) {
+ node.setAttribute('srsName', srsName);
+ }
+ if (featureNS) {
+ ol.xml.setAttributeNS(node, ol.format.WFS.XMLNS, 'xmlns:' + featurePrefix,
+ featureNS);
+ }
+ var item = /** @type {ol.XmlNodeStackItem} */ (ol.object.assign({}, context));
+ item.node = node;
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.QUERY_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('PropertyName'), propertyNames,
+ objectStack);
+ var filter = context['filter'];
+ if (filter) {
+ var child = ol.xml.createElementNS('http://www.opengis.net/ogc', 'Filter');
+ node.appendChild(child);
+ ol.format.WFS.writeFilterCondition_(child, filter, objectStack);
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeFilterCondition_ = function(node, filter, objectStack) {
+ /** @type {ol.XmlNodeStackItem} */
+ var item = {node: node};
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.GETFEATURE_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory(filter.getTagName()),
+ [filter], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeBboxFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.Bbox,
+ 'must be bbox filter');
+
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ context['srsName'] = filter.srsName;
+
+ ol.format.WFS.writeOgcPropertyName_(node, filter.geometryName);
+ ol.format.GML3.prototype.writeGeometryElement(node, filter.extent, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeLogicalFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.LogicalBinary,
+ 'must be logical filter');
+ /** @type {ol.XmlNodeStackItem} */
+ var item = {node: node};
+ var conditionA = filter.conditionA;
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.GETFEATURE_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory(conditionA.getTagName()),
+ [conditionA], objectStack);
+ var conditionB = filter.conditionB;
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.GETFEATURE_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory(conditionB.getTagName()),
+ [conditionB], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeNotFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.Not,
+ 'must be Not filter');
+ /** @type {ol.XmlNodeStackItem} */
+ var item = {node: node};
+ var condition = filter.condition;
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.GETFEATURE_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory(condition.getTagName()),
+ [condition], objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeComparisonFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.ComparisonBinary,
+ 'must be binary comparison filter');
+ if (filter.matchCase !== undefined) {
+ node.setAttribute('matchCase', filter.matchCase.toString());
+ }
+ ol.format.WFS.writeOgcPropertyName_(node, filter.propertyName);
+ ol.format.WFS.writeOgcLiteral_(node, '' + filter.expression);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeIsNullFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.IsNull,
+ 'must be IsNull comparison filter');
+ ol.format.WFS.writeOgcPropertyName_(node, filter.propertyName);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeIsBetweenFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.IsBetween,
+ 'must be IsBetween comparison filter');
+ ol.format.WFS.writeOgcPropertyName_(node, filter.propertyName);
+ ol.format.WFS.writeOgcExpression_('LowerBoundary', node, '' + filter.lowerBoundary);
+ ol.format.WFS.writeOgcExpression_('UpperBoundary', node, '' + filter.upperBoundary);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.format.ogc.filter.Filter} filter Filter.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeIsLikeFilter_ = function(node, filter, objectStack) {
+ goog.asserts.assertInstanceof(filter, ol.format.ogc.filter.IsLike,
+ 'must be IsLike comparison filter');
+ node.setAttribute('wildCard', filter.wildCard);
+ node.setAttribute('singleChar', filter.singleChar);
+ node.setAttribute('escapeChar', filter.escapeChar);
+ if (filter.matchCase !== undefined) {
+ node.setAttribute('matchCase', filter.matchCase.toString());
+ }
+ ol.format.WFS.writeOgcPropertyName_(node, filter.propertyName);
+ ol.format.WFS.writeOgcLiteral_(node, '' + filter.pattern);
+};
+
+
+/**
+ * @param {string} tagName Tag name.
+ * @param {Node} node Node.
+ * @param {string} value Value.
+ * @private
+ */
+ol.format.WFS.writeOgcExpression_ = function(tagName, node, value) {
+ var property = ol.xml.createElementNS('http://www.opengis.net/ogc', tagName);
+ ol.format.XSD.writeStringTextNode(property, value);
+ node.appendChild(property);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {string} value PropertyName value.
+ * @private
+ */
+ol.format.WFS.writeOgcPropertyName_ = function(node, value) {
+ ol.format.WFS.writeOgcExpression_('PropertyName', node, value);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {string} value PropertyName value.
+ * @private
+ */
+ol.format.WFS.writeOgcLiteral_ = function(node, value) {
+ ol.format.WFS.writeOgcExpression_('Literal', node, value);
+};
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.WFS.GETFEATURE_SERIALIZERS_ = {
+ 'http://www.opengis.net/wfs': {
+ 'Query': ol.xml.makeChildAppender(ol.format.WFS.writeQuery_)
+ },
+ 'http://www.opengis.net/ogc': {
+ 'And': ol.xml.makeChildAppender(ol.format.WFS.writeLogicalFilter_),
+ 'Or': ol.xml.makeChildAppender(ol.format.WFS.writeLogicalFilter_),
+ 'Not': ol.xml.makeChildAppender(ol.format.WFS.writeNotFilter_),
+ 'BBOX': ol.xml.makeChildAppender(ol.format.WFS.writeBboxFilter_),
+ 'PropertyIsEqualTo': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsNotEqualTo': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsLessThan': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsLessThanOrEqualTo': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsGreaterThan': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsGreaterThanOrEqualTo': ol.xml.makeChildAppender(ol.format.WFS.writeComparisonFilter_),
+ 'PropertyIsNull': ol.xml.makeChildAppender(ol.format.WFS.writeIsNullFilter_),
+ 'PropertyIsBetween': ol.xml.makeChildAppender(ol.format.WFS.writeIsBetweenFilter_),
+ 'PropertyIsLike': ol.xml.makeChildAppender(ol.format.WFS.writeIsLikeFilter_)
+ }
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<{string}>} featureTypes Feature types.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.WFS.writeGetFeature_ = function(node, featureTypes, objectStack) {
+ var context = objectStack[objectStack.length - 1];
+ goog.asserts.assert(goog.isObject(context), 'context should be an Object');
+ var item = /** @type {ol.XmlNodeStackItem} */ (ol.object.assign({}, context));
+ item.node = node;
+ ol.xml.pushSerializeAndPop(item,
+ ol.format.WFS.GETFEATURE_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Query'), featureTypes,
+ objectStack);
+};
+
+
+/**
+ * Encode format as WFS `GetFeature` and return the Node.
+ *
+ * @param {olx.format.WFSWriteGetFeatureOptions} options Options.
+ * @return {Node} Result.
+ * @api stable
+ */
+ol.format.WFS.prototype.writeGetFeature = function(options) {
+ var node = ol.xml.createElementNS('http://www.opengis.net/wfs',
+ 'GetFeature');
+ node.setAttribute('service', 'WFS');
+ node.setAttribute('version', '1.1.0');
+ var filter;
+ if (options) {
+ if (options.handle) {
+ node.setAttribute('handle', options.handle);
+ }
+ if (options.outputFormat) {
+ node.setAttribute('outputFormat', options.outputFormat);
+ }
+ if (options.maxFeatures !== undefined) {
+ node.setAttribute('maxFeatures', options.maxFeatures);
+ }
+ if (options.resultType) {
+ node.setAttribute('resultType', options.resultType);
+ }
+ if (options.startIndex !== undefined) {
+ node.setAttribute('startIndex', options.startIndex);
+ }
+ if (options.count !== undefined) {
+ node.setAttribute('count', options.count);
+ }
+ filter = options.filter;
+ if (options.bbox) {
+ goog.asserts.assert(options.geometryName,
+ 'geometryName must be set when using bbox filter');
+ var bbox = ol.format.ogc.filter.bbox(
+ options.geometryName, options.bbox, options.srsName);
+ if (filter) {
+ // if bbox and filter are both set, combine the two into a single filter
+ filter = ol.format.ogc.filter.and(filter, bbox);
+ } else {
+ filter = bbox;
+ }
+ }
+ }
+ ol.xml.setAttributeNS(node, 'http://www.w3.org/2001/XMLSchema-instance',
+ 'xsi:schemaLocation', this.schemaLocation_);
+ /** @type {ol.XmlNodeStackItem} */
+ var context = {
+ node: node,
+ 'srsName': options.srsName,
+ 'featureNS': options.featureNS ? options.featureNS : this.featureNS_,
+ 'featurePrefix': options.featurePrefix,
+ 'geometryName': options.geometryName,
+ 'filter': filter,
+ 'propertyNames': options.propertyNames ? options.propertyNames : []
+ };
+ goog.asserts.assert(Array.isArray(options.featureTypes),
+ 'options.featureTypes should be an array');
+ ol.format.WFS.writeGetFeature_(node, options.featureTypes, [context]);
+ return node;
+};
+
+
+/**
+ * Encode format as WFS `Transaction` and return the Node.
+ *
+ * @param {Array.<ol.Feature>} inserts The features to insert.
+ * @param {Array.<ol.Feature>} updates The features to update.
+ * @param {Array.<ol.Feature>} deletes The features to delete.
+ * @param {olx.format.WFSWriteTransactionOptions} options Write options.
+ * @return {Node} Result.
+ * @api stable
+ */
+ol.format.WFS.prototype.writeTransaction = function(inserts, updates, deletes,
+ options) {
+ var objectStack = [];
+ var node = ol.xml.createElementNS('http://www.opengis.net/wfs',
+ 'Transaction');
+ node.setAttribute('service', 'WFS');
+ node.setAttribute('version', '1.1.0');
+ var baseObj;
+ /** @type {ol.XmlNodeStackItem} */
+ var obj;
+ if (options) {
+ baseObj = options.gmlOptions ? options.gmlOptions : {};
+ if (options.handle) {
+ node.setAttribute('handle', options.handle);
+ }
+ }
+ ol.xml.setAttributeNS(node, 'http://www.w3.org/2001/XMLSchema-instance',
+ 'xsi:schemaLocation', this.schemaLocation_);
+ if (inserts) {
+ obj = {node: node, 'featureNS': options.featureNS,
+ 'featureType': options.featureType, 'featurePrefix': options.featurePrefix,
+ 'srsName': options.srsName};
+ ol.object.assign(obj, baseObj);
+ ol.xml.pushSerializeAndPop(obj,
+ ol.format.WFS.TRANSACTION_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Insert'), inserts,
+ objectStack);
+ }
+ if (updates) {
+ obj = {node: node, 'featureNS': options.featureNS,
+ 'featureType': options.featureType, 'featurePrefix': options.featurePrefix,
+ 'srsName': options.srsName};
+ ol.object.assign(obj, baseObj);
+ ol.xml.pushSerializeAndPop(obj,
+ ol.format.WFS.TRANSACTION_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Update'), updates,
+ objectStack);
+ }
+ if (deletes) {
+ ol.xml.pushSerializeAndPop({node: node, 'featureNS': options.featureNS,
+ 'featureType': options.featureType, 'featurePrefix': options.featurePrefix,
+ 'srsName': options.srsName},
+ ol.format.WFS.TRANSACTION_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Delete'), deletes,
+ objectStack);
+ }
+ if (options.nativeElements) {
+ ol.xml.pushSerializeAndPop({node: node, 'featureNS': options.featureNS,
+ 'featureType': options.featureType, 'featurePrefix': options.featurePrefix,
+ 'srsName': options.srsName},
+ ol.format.WFS.TRANSACTION_SERIALIZERS_,
+ ol.xml.makeSimpleNodeFactory('Native'), options.nativeElements,
+ objectStack);
+ }
+ return node;
+};
+
+
+/**
+ * Read the projection from a WFS source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @return {?ol.proj.Projection} Projection.
+ * @api stable
+ */
+ol.format.WFS.prototype.readProjection;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WFS.prototype.readProjectionFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be a DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readProjectionFromNode(n);
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WFS.prototype.readProjectionFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'FeatureCollection',
+ 'localName should be FeatureCollection');
+
+ if (node.firstElementChild &&
+ node.firstElementChild.firstElementChild) {
+ node = node.firstElementChild.firstElementChild;
+ for (var n = node.firstElementChild; n; n = n.nextElementSibling) {
+ if (!(n.childNodes.length === 0 ||
+ (n.childNodes.length === 1 &&
+ n.firstChild.nodeType === 3))) {
+ var objectStack = [{}];
+ this.gmlFormat_.readGeometryElement(n, objectStack);
+ return ol.proj.get(objectStack.pop().srsName);
+ }
+ }
+ }
+
+ return null;
+};
+
+goog.provide('ol.format.WKT');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Feature');
+goog.require('ol.format.Feature');
+goog.require('ol.format.TextFeature');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryCollection');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+
+
+/**
+ * @classdesc
+ * Geometry format for reading and writing data in the `WellKnownText` (WKT)
+ * format.
+ *
+ * @constructor
+ * @extends {ol.format.TextFeature}
+ * @param {olx.format.WKTOptions=} opt_options Options.
+ * @api stable
+ */
+ol.format.WKT = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.format.TextFeature.call(this);
+
+ /**
+ * Split GeometryCollection into multiple features.
+ * @type {boolean}
+ * @private
+ */
+ this.splitCollection_ = options.splitCollection !== undefined ?
+ options.splitCollection : false;
+
+};
+ol.inherits(ol.format.WKT, ol.format.TextFeature);
+
+
+/**
+ * @const
+ * @type {string}
+ */
+ol.format.WKT.EMPTY = 'EMPTY';
+
+
+/**
+ * @param {ol.geom.Point} geom Point geometry.
+ * @return {string} Coordinates part of Point as WKT.
+ * @private
+ */
+ol.format.WKT.encodePointGeometry_ = function(geom) {
+ var coordinates = geom.getCoordinates();
+ if (coordinates.length === 0) {
+ return '';
+ }
+ return coordinates[0] + ' ' + coordinates[1];
+};
+
+
+/**
+ * @param {ol.geom.MultiPoint} geom MultiPoint geometry.
+ * @return {string} Coordinates part of MultiPoint as WKT.
+ * @private
+ */
+ol.format.WKT.encodeMultiPointGeometry_ = function(geom) {
+ var array = [];
+ var components = geom.getPoints();
+ for (var i = 0, ii = components.length; i < ii; ++i) {
+ array.push('(' + ol.format.WKT.encodePointGeometry_(components[i]) + ')');
+ }
+ return array.join(',');
+};
+
+
+/**
+ * @param {ol.geom.GeometryCollection} geom GeometryCollection geometry.
+ * @return {string} Coordinates part of GeometryCollection as WKT.
+ * @private
+ */
+ol.format.WKT.encodeGeometryCollectionGeometry_ = function(geom) {
+ var array = [];
+ var geoms = geom.getGeometries();
+ for (var i = 0, ii = geoms.length; i < ii; ++i) {
+ array.push(ol.format.WKT.encode_(geoms[i]));
+ }
+ return array.join(',');
+};
+
+
+/**
+ * @param {ol.geom.LineString|ol.geom.LinearRing} geom LineString geometry.
+ * @return {string} Coordinates part of LineString as WKT.
+ * @private
+ */
+ol.format.WKT.encodeLineStringGeometry_ = function(geom) {
+ var coordinates = geom.getCoordinates();
+ var array = [];
+ for (var i = 0, ii = coordinates.length; i < ii; ++i) {
+ array.push(coordinates[i][0] + ' ' + coordinates[i][1]);
+ }
+ return array.join(',');
+};
+
+
+/**
+ * @param {ol.geom.MultiLineString} geom MultiLineString geometry.
+ * @return {string} Coordinates part of MultiLineString as WKT.
+ * @private
+ */
+ol.format.WKT.encodeMultiLineStringGeometry_ = function(geom) {
+ var array = [];
+ var components = geom.getLineStrings();
+ for (var i = 0, ii = components.length; i < ii; ++i) {
+ array.push('(' + ol.format.WKT.encodeLineStringGeometry_(
+ components[i]) + ')');
+ }
+ return array.join(',');
+};
+
+
+/**
+ * @param {ol.geom.Polygon} geom Polygon geometry.
+ * @return {string} Coordinates part of Polygon as WKT.
+ * @private
+ */
+ol.format.WKT.encodePolygonGeometry_ = function(geom) {
+ var array = [];
+ var rings = geom.getLinearRings();
+ for (var i = 0, ii = rings.length; i < ii; ++i) {
+ array.push('(' + ol.format.WKT.encodeLineStringGeometry_(
+ rings[i]) + ')');
+ }
+ return array.join(',');
+};
+
+
+/**
+ * @param {ol.geom.MultiPolygon} geom MultiPolygon geometry.
+ * @return {string} Coordinates part of MultiPolygon as WKT.
+ * @private
+ */
+ol.format.WKT.encodeMultiPolygonGeometry_ = function(geom) {
+ var array = [];
+ var components = geom.getPolygons();
+ for (var i = 0, ii = components.length; i < ii; ++i) {
+ array.push('(' + ol.format.WKT.encodePolygonGeometry_(
+ components[i]) + ')');
+ }
+ return array.join(',');
+};
+
+
+/**
+ * Encode a geometry as WKT.
+ * @param {ol.geom.Geometry} geom The geometry to encode.
+ * @return {string} WKT string for the geometry.
+ * @private
+ */
+ol.format.WKT.encode_ = function(geom) {
+ var type = geom.getType();
+ var geometryEncoder = ol.format.WKT.GeometryEncoder_[type];
+ goog.asserts.assert(geometryEncoder, 'geometryEncoder should be defined');
+ var enc = geometryEncoder(geom);
+ type = type.toUpperCase();
+ if (enc.length === 0) {
+ return type + ' ' + ol.format.WKT.EMPTY;
+ }
+ return type + '(' + enc + ')';
+};
+
+
+/**
+ * @const
+ * @type {Object.<string, function(ol.geom.Geometry): string>}
+ * @private
+ */
+ol.format.WKT.GeometryEncoder_ = {
+ 'Point': ol.format.WKT.encodePointGeometry_,
+ 'LineString': ol.format.WKT.encodeLineStringGeometry_,
+ 'Polygon': ol.format.WKT.encodePolygonGeometry_,
+ 'MultiPoint': ol.format.WKT.encodeMultiPointGeometry_,
+ 'MultiLineString': ol.format.WKT.encodeMultiLineStringGeometry_,
+ 'MultiPolygon': ol.format.WKT.encodeMultiPolygonGeometry_,
+ 'GeometryCollection': ol.format.WKT.encodeGeometryCollectionGeometry_
+};
+
+
+/**
+ * Parse a WKT string.
+ * @param {string} wkt WKT string.
+ * @return {ol.geom.Geometry|ol.geom.GeometryCollection|undefined}
+ * The geometry created.
+ * @private
+ */
+ol.format.WKT.prototype.parse_ = function(wkt) {
+ var lexer = new ol.format.WKT.Lexer(wkt);
+ var parser = new ol.format.WKT.Parser(lexer);
+ return parser.parse();
+};
+
+
+/**
+ * Read a feature from a WKT source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.Feature} Feature.
+ * @api stable
+ */
+ol.format.WKT.prototype.readFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.readFeatureFromText = function(text, opt_options) {
+ var geom = this.readGeometryFromText(text, opt_options);
+ if (geom) {
+ var feature = new ol.Feature();
+ feature.setGeometry(geom);
+ return feature;
+ }
+ return null;
+};
+
+
+/**
+ * Read all features from a WKT source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.WKT.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.readFeaturesFromText = function(text, opt_options) {
+ var geometries = [];
+ var geometry = this.readGeometryFromText(text, opt_options);
+ if (this.splitCollection_ &&
+ geometry.getType() == ol.geom.GeometryType.GEOMETRY_COLLECTION) {
+ geometries = (/** @type {ol.geom.GeometryCollection} */ (geometry))
+ .getGeometriesArray();
+ } else {
+ geometries = [geometry];
+ }
+ var feature, features = [];
+ for (var i = 0, ii = geometries.length; i < ii; ++i) {
+ feature = new ol.Feature();
+ feature.setGeometry(geometries[i]);
+ features.push(feature);
+ }
+ return features;
+};
+
+
+/**
+ * Read a single geometry from a WKT source.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Read options.
+ * @return {ol.geom.Geometry} Geometry.
+ * @api stable
+ */
+ol.format.WKT.prototype.readGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.readGeometryFromText = function(text, opt_options) {
+ var geometry = this.parse_(text);
+ if (geometry) {
+ return /** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, false, opt_options));
+ } else {
+ return null;
+ }
+};
+
+
+/**
+ * Encode a feature as a WKT string.
+ *
+ * @function
+ * @param {ol.Feature} feature Feature.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} WKT string.
+ * @api stable
+ */
+ol.format.WKT.prototype.writeFeature;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.writeFeatureText = function(feature, opt_options) {
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ return this.writeGeometryText(geometry, opt_options);
+ }
+ return '';
+};
+
+
+/**
+ * Encode an array of features as a WKT string.
+ *
+ * @function
+ * @param {Array.<ol.Feature>} features Features.
+ * @param {olx.format.WriteOptions=} opt_options Write options.
+ * @return {string} WKT string.
+ * @api stable
+ */
+ol.format.WKT.prototype.writeFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.writeFeaturesText = function(features, opt_options) {
+ if (features.length == 1) {
+ return this.writeFeatureText(features[0], opt_options);
+ }
+ var geometries = [];
+ for (var i = 0, ii = features.length; i < ii; ++i) {
+ geometries.push(features[i].getGeometry());
+ }
+ var collection = new ol.geom.GeometryCollection(geometries);
+ return this.writeGeometryText(collection, opt_options);
+};
+
+
+/**
+ * Write a single geometry as a WKT string.
+ *
+ * @function
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @return {string} WKT string.
+ * @api stable
+ */
+ol.format.WKT.prototype.writeGeometry;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WKT.prototype.writeGeometryText = function(geometry, opt_options) {
+ return ol.format.WKT.encode_(/** @type {ol.geom.Geometry} */ (
+ ol.format.Feature.transformWithOptions(geometry, true, opt_options)));
+};
+
+
+/**
+ * @const
+ * @enum {number}
+ */
+ol.format.WKT.TokenType = {
+ TEXT: 1,
+ LEFT_PAREN: 2,
+ RIGHT_PAREN: 3,
+ NUMBER: 4,
+ COMMA: 5,
+ EOF: 6
+};
+
+
+/**
+ * Class to tokenize a WKT string.
+ * @param {string} wkt WKT string.
+ * @constructor
+ * @protected
+ */
+ol.format.WKT.Lexer = function(wkt) {
+
+ /**
+ * @type {string}
+ */
+ this.wkt = wkt;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.index_ = -1;
+};
+
+
+/**
+ * @param {string} c Character.
+ * @return {boolean} Whether the character is alphabetic.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.isAlpha_ = function(c) {
+ return c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z';
+};
+
+
+/**
+ * @param {string} c Character.
+ * @param {boolean=} opt_decimal Whether the string number
+ * contains a dot, i.e. is a decimal number.
+ * @return {boolean} Whether the character is numeric.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.isNumeric_ = function(c, opt_decimal) {
+ var decimal = opt_decimal !== undefined ? opt_decimal : false;
+ return c >= '0' && c <= '9' || c == '.' && !decimal;
+};
+
+
+/**
+ * @param {string} c Character.
+ * @return {boolean} Whether the character is whitespace.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.isWhiteSpace_ = function(c) {
+ return c == ' ' || c == '\t' || c == '\r' || c == '\n';
+};
+
+
+/**
+ * @return {string} Next string character.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.nextChar_ = function() {
+ return this.wkt.charAt(++this.index_);
+};
+
+
+/**
+ * Fetch and return the next token.
+ * @return {!ol.WKTToken} Next string token.
+ */
+ol.format.WKT.Lexer.prototype.nextToken = function() {
+ var c = this.nextChar_();
+ var token = {position: this.index_, value: c};
+
+ if (c == '(') {
+ token.type = ol.format.WKT.TokenType.LEFT_PAREN;
+ } else if (c == ',') {
+ token.type = ol.format.WKT.TokenType.COMMA;
+ } else if (c == ')') {
+ token.type = ol.format.WKT.TokenType.RIGHT_PAREN;
+ } else if (this.isNumeric_(c) || c == '-') {
+ token.type = ol.format.WKT.TokenType.NUMBER;
+ token.value = this.readNumber_();
+ } else if (this.isAlpha_(c)) {
+ token.type = ol.format.WKT.TokenType.TEXT;
+ token.value = this.readText_();
+ } else if (this.isWhiteSpace_(c)) {
+ return this.nextToken();
+ } else if (c === '') {
+ token.type = ol.format.WKT.TokenType.EOF;
+ } else {
+ throw new Error('Unexpected character: ' + c);
+ }
+
+ return token;
+};
+
+
+/**
+ * @return {number} Numeric token value.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.readNumber_ = function() {
+ var c, index = this.index_;
+ var decimal = false;
+ var scientificNotation = false;
+ do {
+ if (c == '.') {
+ decimal = true;
+ } else if (c == 'e' || c == 'E') {
+ scientificNotation = true;
+ }
+ c = this.nextChar_();
+ } while (
+ this.isNumeric_(c, decimal) ||
+ // if we haven't detected a scientific number before, 'e' or 'E'
+ // hint that we should continue to read
+ !scientificNotation && (c == 'e' || c == 'E') ||
+ // once we know that we have a scientific number, both '-' and '+'
+ // are allowed
+ scientificNotation && (c == '-' || c == '+')
+ );
+ return parseFloat(this.wkt.substring(index, this.index_--));
+};
+
+
+/**
+ * @return {string} String token value.
+ * @private
+ */
+ol.format.WKT.Lexer.prototype.readText_ = function() {
+ var c, index = this.index_;
+ do {
+ c = this.nextChar_();
+ } while (this.isAlpha_(c));
+ return this.wkt.substring(index, this.index_--).toUpperCase();
+};
+
+
+/**
+ * Class to parse the tokens from the WKT string.
+ * @param {ol.format.WKT.Lexer} lexer The lexer.
+ * @constructor
+ * @protected
+ */
+ol.format.WKT.Parser = function(lexer) {
+
+ /**
+ * @type {ol.format.WKT.Lexer}
+ * @private
+ */
+ this.lexer_ = lexer;
+
+ /**
+ * @type {ol.WKTToken}
+ * @private
+ */
+ this.token_;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.dimension_ = 2;
+};
+
+
+/**
+ * Fetch the next token form the lexer and replace the active token.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.consume_ = function() {
+ this.token_ = this.lexer_.nextToken();
+};
+
+
+/**
+ * If the given type matches the current token, consume it.
+ * @param {ol.format.WKT.TokenType} type Token type.
+ * @return {boolean} Whether the token matches the given type.
+ */
+ol.format.WKT.Parser.prototype.match = function(type) {
+ var isMatch = this.token_.type == type;
+ if (isMatch) {
+ this.consume_();
+ }
+ return isMatch;
+};
+
+
+/**
+ * Try to parse the tokens provided by the lexer.
+ * @return {ol.geom.Geometry|ol.geom.GeometryCollection} The geometry.
+ */
+ol.format.WKT.Parser.prototype.parse = function() {
+ this.consume_();
+ var geometry = this.parseGeometry_();
+ goog.asserts.assert(this.token_.type == ol.format.WKT.TokenType.EOF,
+ 'token type should be end of file');
+ return geometry;
+};
+
+
+/**
+ * @return {!(ol.geom.Geometry|ol.geom.GeometryCollection)} The geometry.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseGeometry_ = function() {
+ var token = this.token_;
+ if (this.match(ol.format.WKT.TokenType.TEXT)) {
+ var geomType = token.value;
+ if (geomType == ol.geom.GeometryType.GEOMETRY_COLLECTION.toUpperCase()) {
+ var geometries = this.parseGeometryCollectionText_();
+ return new ol.geom.GeometryCollection(geometries);
+ } else {
+ var parser = ol.format.WKT.Parser.GeometryParser_[geomType];
+ var ctor = ol.format.WKT.Parser.GeometryConstructor_[geomType];
+ if (!parser || !ctor) {
+ throw new Error('Invalid geometry type: ' + geomType);
+ }
+ var coordinates = parser.call(this);
+ return new ctor(coordinates);
+ }
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<ol.geom.Geometry>} A collection of geometries.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseGeometryCollectionText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var geometries = [];
+ do {
+ geometries.push(this.parseGeometry_());
+ } while (this.match(ol.format.WKT.TokenType.COMMA));
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return geometries;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {Array.<number>} All values in a point.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePointText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates = this.parsePoint_();
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return null;
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} All points in a linestring.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseLineStringText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates = this.parsePointList_();
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} All points in a polygon.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePolygonText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates = this.parseLineStringTextList_();
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} All points in a multipoint.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseMultiPointText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates;
+ if (this.token_.type == ol.format.WKT.TokenType.LEFT_PAREN) {
+ coordinates = this.parsePointTextList_();
+ } else {
+ coordinates = this.parsePointList_();
+ }
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} All linestring points
+ * in a multilinestring.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseMultiLineStringText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates = this.parseLineStringTextList_();
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} All polygon points in a multipolygon.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseMultiPolygonText_ = function() {
+ if (this.match(ol.format.WKT.TokenType.LEFT_PAREN)) {
+ var coordinates = this.parsePolygonTextList_();
+ if (this.match(ol.format.WKT.TokenType.RIGHT_PAREN)) {
+ return coordinates;
+ }
+ } else if (this.isEmptyGeometry_()) {
+ return [];
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<number>} A point.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePoint_ = function() {
+ var coordinates = [];
+ for (var i = 0; i < this.dimension_; ++i) {
+ var token = this.token_;
+ if (this.match(ol.format.WKT.TokenType.NUMBER)) {
+ coordinates.push(token.value);
+ } else {
+ break;
+ }
+ }
+ if (coordinates.length == this.dimension_) {
+ return coordinates;
+ }
+ throw new Error(this.formatErrorMessage_());
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} An array of points.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePointList_ = function() {
+ var coordinates = [this.parsePoint_()];
+ while (this.match(ol.format.WKT.TokenType.COMMA)) {
+ coordinates.push(this.parsePoint_());
+ }
+ return coordinates;
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} An array of points.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePointTextList_ = function() {
+ var coordinates = [this.parsePointText_()];
+ while (this.match(ol.format.WKT.TokenType.COMMA)) {
+ coordinates.push(this.parsePointText_());
+ }
+ return coordinates;
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} An array of points.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parseLineStringTextList_ = function() {
+ var coordinates = [this.parseLineStringText_()];
+ while (this.match(ol.format.WKT.TokenType.COMMA)) {
+ coordinates.push(this.parseLineStringText_());
+ }
+ return coordinates;
+};
+
+
+/**
+ * @return {!Array.<!Array.<number>>} An array of points.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.parsePolygonTextList_ = function() {
+ var coordinates = [this.parsePolygonText_()];
+ while (this.match(ol.format.WKT.TokenType.COMMA)) {
+ coordinates.push(this.parsePolygonText_());
+ }
+ return coordinates;
+};
+
+
+/**
+ * @return {boolean} Whether the token implies an empty geometry.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.isEmptyGeometry_ = function() {
+ var isEmpty = this.token_.type == ol.format.WKT.TokenType.TEXT &&
+ this.token_.value == ol.format.WKT.EMPTY;
+ if (isEmpty) {
+ this.consume_();
+ }
+ return isEmpty;
+};
+
+
+/**
+ * Create an error message for an unexpected token error.
+ * @return {string} Error message.
+ * @private
+ */
+ol.format.WKT.Parser.prototype.formatErrorMessage_ = function() {
+ return 'Unexpected `' + this.token_.value + '` at position ' +
+ this.token_.position + ' in `' + this.lexer_.wkt + '`';
+};
+
+
+/**
+ * @enum {function (new:ol.geom.Geometry, Array, ol.geom.GeometryLayout)}
+ * @private
+ */
+ol.format.WKT.Parser.GeometryConstructor_ = {
+ 'POINT': ol.geom.Point,
+ 'LINESTRING': ol.geom.LineString,
+ 'POLYGON': ol.geom.Polygon,
+ 'MULTIPOINT': ol.geom.MultiPoint,
+ 'MULTILINESTRING': ol.geom.MultiLineString,
+ 'MULTIPOLYGON': ol.geom.MultiPolygon
+};
+
+
+/**
+ * @enum {(function(): Array)}
+ * @private
+ */
+ol.format.WKT.Parser.GeometryParser_ = {
+ 'POINT': ol.format.WKT.Parser.prototype.parsePointText_,
+ 'LINESTRING': ol.format.WKT.Parser.prototype.parseLineStringText_,
+ 'POLYGON': ol.format.WKT.Parser.prototype.parsePolygonText_,
+ 'MULTIPOINT': ol.format.WKT.Parser.prototype.parseMultiPointText_,
+ 'MULTILINESTRING': ol.format.WKT.Parser.prototype.parseMultiLineStringText_,
+ 'MULTIPOLYGON': ol.format.WKT.Parser.prototype.parseMultiPolygonText_
+};
+
+goog.provide('ol.format.WMSCapabilities');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.format.XLink');
+goog.require('ol.format.XML');
+goog.require('ol.format.XSD');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Format for reading WMS capabilities data
+ *
+ * @constructor
+ * @extends {ol.format.XML}
+ * @api
+ */
+ol.format.WMSCapabilities = function() {
+
+ ol.format.XML.call(this);
+
+ /**
+ * @type {string|undefined}
+ */
+ this.version = undefined;
+};
+ol.inherits(ol.format.WMSCapabilities, ol.format.XML);
+
+
+/**
+ * Read a WMS capabilities document.
+ *
+ * @function
+ * @param {Document|Node|string} source The XML source.
+ * @return {Object} An object representing the WMS capabilities.
+ * @api
+ */
+ol.format.WMSCapabilities.prototype.read;
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {Object} WMS Capability object.
+ */
+ol.format.WMSCapabilities.prototype.readFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readFromNode(n);
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {Object} WMS Capability object.
+ */
+ol.format.WMSCapabilities.prototype.readFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'WMS_Capabilities' ||
+ node.localName == 'WMT_MS_Capabilities',
+ 'localName should be WMS_Capabilities or WMT_MS_Capabilities');
+ this.version = node.getAttribute('version').trim();
+ goog.asserts.assertString(this.version, 'this.version should be a string');
+ var wmsCapabilityObject = ol.xml.pushParseAndPop({
+ 'version': this.version
+ }, ol.format.WMSCapabilities.PARSERS_, node, []);
+ return wmsCapabilityObject ? wmsCapabilityObject : null;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Attribution object.
+ */
+ol.format.WMSCapabilities.readAttribution_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Attribution',
+ 'localName should be Attribution');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.ATTRIBUTION_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object} Bounding box object.
+ */
+ol.format.WMSCapabilities.readBoundingBox_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'BoundingBox',
+ 'localName should be BoundingBox');
+
+ var extent = [
+ ol.format.XSD.readDecimalString(node.getAttribute('minx')),
+ ol.format.XSD.readDecimalString(node.getAttribute('miny')),
+ ol.format.XSD.readDecimalString(node.getAttribute('maxx')),
+ ol.format.XSD.readDecimalString(node.getAttribute('maxy'))
+ ];
+
+ var resolutions = [
+ ol.format.XSD.readDecimalString(node.getAttribute('resx')),
+ ol.format.XSD.readDecimalString(node.getAttribute('resy'))
+ ];
+
+ return {
+ 'crs': node.getAttribute('CRS'),
+ 'extent': extent,
+ 'res': resolutions
+ };
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {ol.Extent|undefined} Bounding box object.
+ */
+ol.format.WMSCapabilities.readEXGeographicBoundingBox_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'EX_GeographicBoundingBox',
+ 'localName should be EX_GeographicBoundingBox');
+ var geographicBoundingBox = ol.xml.pushParseAndPop(
+ {},
+ ol.format.WMSCapabilities.EX_GEOGRAPHIC_BOUNDING_BOX_PARSERS_,
+ node, objectStack);
+ if (!geographicBoundingBox) {
+ return undefined;
+ }
+ var westBoundLongitude = /** @type {number|undefined} */
+ (geographicBoundingBox['westBoundLongitude']);
+ var southBoundLatitude = /** @type {number|undefined} */
+ (geographicBoundingBox['southBoundLatitude']);
+ var eastBoundLongitude = /** @type {number|undefined} */
+ (geographicBoundingBox['eastBoundLongitude']);
+ var northBoundLatitude = /** @type {number|undefined} */
+ (geographicBoundingBox['northBoundLatitude']);
+ if (westBoundLongitude === undefined || southBoundLatitude === undefined ||
+ eastBoundLongitude === undefined || northBoundLatitude === undefined) {
+ return undefined;
+ }
+ return [
+ westBoundLongitude, southBoundLatitude,
+ eastBoundLongitude, northBoundLatitude
+ ];
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Capability object.
+ */
+ol.format.WMSCapabilities.readCapability_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Capability',
+ 'localName should be Capability');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.CAPABILITY_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Service object.
+ */
+ol.format.WMSCapabilities.readService_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Service',
+ 'localName should be Service');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.SERVICE_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Contact information object.
+ */
+ol.format.WMSCapabilities.readContactInformation_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType shpuld be ELEMENT');
+ goog.asserts.assert(node.localName == 'ContactInformation',
+ 'localName should be ContactInformation');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.CONTACT_INFORMATION_PARSERS_,
+ node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Contact person object.
+ */
+ol.format.WMSCapabilities.readContactPersonPrimary_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ContactPersonPrimary',
+ 'localName should be ContactPersonPrimary');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.CONTACT_PERSON_PARSERS_,
+ node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Contact address object.
+ */
+ol.format.WMSCapabilities.readContactAddress_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'ContactAddress',
+ 'localName should be ContactAddress');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.CONTACT_ADDRESS_PARSERS_,
+ node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Array.<string>|undefined} Format array.
+ */
+ol.format.WMSCapabilities.readException_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Exception',
+ 'localName should be Exception');
+ return ol.xml.pushParseAndPop(
+ [], ol.format.WMSCapabilities.EXCEPTION_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @private
+ * @return {Object|undefined} Layer object.
+ */
+ol.format.WMSCapabilities.readCapabilityLayer_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Layer', 'localName should be Layer');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.LAYER_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Layer object.
+ */
+ol.format.WMSCapabilities.readLayer_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Layer', 'localName should be Layer');
+ var parentLayerObject = /** @type {Object.<string,*>} */
+ (objectStack[objectStack.length - 1]);
+
+ var layerObject = ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.LAYER_PARSERS_, node, objectStack);
+
+ if (!layerObject) {
+ return undefined;
+ }
+ var queryable =
+ ol.format.XSD.readBooleanString(node.getAttribute('queryable'));
+ if (queryable === undefined) {
+ queryable = parentLayerObject['queryable'];
+ }
+ layerObject['queryable'] = queryable !== undefined ? queryable : false;
+
+ var cascaded = ol.format.XSD.readNonNegativeIntegerString(
+ node.getAttribute('cascaded'));
+ if (cascaded === undefined) {
+ cascaded = parentLayerObject['cascaded'];
+ }
+ layerObject['cascaded'] = cascaded;
+
+ var opaque = ol.format.XSD.readBooleanString(node.getAttribute('opaque'));
+ if (opaque === undefined) {
+ opaque = parentLayerObject['opaque'];
+ }
+ layerObject['opaque'] = opaque !== undefined ? opaque : false;
+
+ var noSubsets =
+ ol.format.XSD.readBooleanString(node.getAttribute('noSubsets'));
+ if (noSubsets === undefined) {
+ noSubsets = parentLayerObject['noSubsets'];
+ }
+ layerObject['noSubsets'] = noSubsets !== undefined ? noSubsets : false;
+
+ var fixedWidth =
+ ol.format.XSD.readDecimalString(node.getAttribute('fixedWidth'));
+ if (!fixedWidth) {
+ fixedWidth = parentLayerObject['fixedWidth'];
+ }
+ layerObject['fixedWidth'] = fixedWidth;
+
+ var fixedHeight =
+ ol.format.XSD.readDecimalString(node.getAttribute('fixedHeight'));
+ if (!fixedHeight) {
+ fixedHeight = parentLayerObject['fixedHeight'];
+ }
+ layerObject['fixedHeight'] = fixedHeight;
+
+ // See 7.2.4.8
+ var addKeys = ['Style', 'CRS', 'AuthorityURL'];
+ addKeys.forEach(function(key) {
+ if (key in parentLayerObject) {
+ var childValue = layerObject[key] || [];
+ layerObject[key] = childValue.concat(parentLayerObject[key]);
+ }
+ });
+
+ var replaceKeys = ['EX_GeographicBoundingBox', 'BoundingBox', 'Dimension',
+ 'Attribution', 'MinScaleDenominator', 'MaxScaleDenominator'];
+ replaceKeys.forEach(function(key) {
+ if (!(key in layerObject)) {
+ var parentValue = parentLayerObject[key];
+ layerObject[key] = parentValue;
+ }
+ });
+
+ return layerObject;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object} Dimension object.
+ */
+ol.format.WMSCapabilities.readDimension_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Dimension',
+ 'localName should be Dimension');
+ var dimensionObject = {
+ 'name': node.getAttribute('name'),
+ 'units': node.getAttribute('units'),
+ 'unitSymbol': node.getAttribute('unitSymbol'),
+ 'default': node.getAttribute('default'),
+ 'multipleValues': ol.format.XSD.readBooleanString(
+ node.getAttribute('multipleValues')),
+ 'nearestValue': ol.format.XSD.readBooleanString(
+ node.getAttribute('nearestValue')),
+ 'current': ol.format.XSD.readBooleanString(node.getAttribute('current')),
+ 'values': ol.format.XSD.readString(node)
+ };
+ return dimensionObject;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Online resource object.
+ */
+ol.format.WMSCapabilities.readFormatOnlineresource_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.FORMAT_ONLINERESOURCE_PARSERS_,
+ node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Request object.
+ */
+ol.format.WMSCapabilities.readRequest_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Request',
+ 'localName should be Request');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.REQUEST_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} DCP type object.
+ */
+ol.format.WMSCapabilities.readDCPType_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'DCPType',
+ 'localName should be DCPType');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.DCPTYPE_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} HTTP object.
+ */
+ol.format.WMSCapabilities.readHTTP_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'HTTP', 'localName should be HTTP');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.HTTP_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Operation type object.
+ */
+ol.format.WMSCapabilities.readOperationType_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.OPERATIONTYPE_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Online resource object.
+ */
+ol.format.WMSCapabilities.readSizedFormatOnlineresource_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var formatOnlineresource =
+ ol.format.WMSCapabilities.readFormatOnlineresource_(node, objectStack);
+ if (formatOnlineresource) {
+ var size = [
+ ol.format.XSD.readNonNegativeIntegerString(node.getAttribute('width')),
+ ol.format.XSD.readNonNegativeIntegerString(node.getAttribute('height'))
+ ];
+ formatOnlineresource['size'] = size;
+ return formatOnlineresource;
+ }
+ return undefined;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Authority URL object.
+ */
+ol.format.WMSCapabilities.readAuthorityURL_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'AuthorityURL',
+ 'localName should be AuthorityURL');
+ var authorityObject =
+ ol.format.WMSCapabilities.readFormatOnlineresource_(node, objectStack);
+ if (authorityObject) {
+ authorityObject['name'] = node.getAttribute('name');
+ return authorityObject;
+ }
+ return undefined;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Metadata URL object.
+ */
+ol.format.WMSCapabilities.readMetadataURL_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'MetadataURL',
+ 'localName should be MetadataURL');
+ var metadataObject =
+ ol.format.WMSCapabilities.readFormatOnlineresource_(node, objectStack);
+ if (metadataObject) {
+ metadataObject['type'] = node.getAttribute('type');
+ return metadataObject;
+ }
+ return undefined;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Style object.
+ */
+ol.format.WMSCapabilities.readStyle_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Style', 'localName should be Style');
+ return ol.xml.pushParseAndPop(
+ {}, ol.format.WMSCapabilities.STYLE_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Array.<string>|undefined} Keyword list.
+ */
+ol.format.WMSCapabilities.readKeywordList_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'KeywordList',
+ 'localName should be KeywordList');
+ return ol.xml.pushParseAndPop(
+ [], ol.format.WMSCapabilities.KEYWORDLIST_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.format.WMSCapabilities.NAMESPACE_URIS_ = [
+ null,
+ 'http://www.opengis.net/wms'
+];
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Service': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readService_),
+ 'Capability': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readCapability_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.CAPABILITY_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Request': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readRequest_),
+ 'Exception': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readException_),
+ 'Layer': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readCapabilityLayer_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.SERVICE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Title': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Abstract': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'KeywordList': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readKeywordList_),
+ 'OnlineResource': ol.xml.makeObjectPropertySetter(
+ ol.format.XLink.readHref),
+ 'ContactInformation': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readContactInformation_),
+ 'Fees': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'AccessConstraints': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'LayerLimit': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'MaxWidth': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'MaxHeight': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.CONTACT_INFORMATION_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'ContactPersonPrimary': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readContactPersonPrimary_),
+ 'ContactPosition': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'ContactAddress': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readContactAddress_),
+ 'ContactVoiceTelephone': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'ContactFacsimileTelephone': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'ContactElectronicMailAddress': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.CONTACT_PERSON_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'ContactPerson': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'ContactOrganization': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.CONTACT_ADDRESS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'AddressType': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Address': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'City': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'StateOrProvince': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'PostCode': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Country': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.EXCEPTION_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Format': ol.xml.makeArrayPusher(ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.LAYER_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Title': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Abstract': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'KeywordList': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readKeywordList_),
+ 'CRS': ol.xml.makeObjectPropertyPusher(ol.format.XSD.readString),
+ 'EX_GeographicBoundingBox': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readEXGeographicBoundingBox_),
+ 'BoundingBox': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readBoundingBox_),
+ 'Dimension': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readDimension_),
+ 'Attribution': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readAttribution_),
+ 'AuthorityURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readAuthorityURL_),
+ 'Identifier': ol.xml.makeObjectPropertyPusher(ol.format.XSD.readString),
+ 'MetadataURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readMetadataURL_),
+ 'DataURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readFormatOnlineresource_),
+ 'FeatureListURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readFormatOnlineresource_),
+ 'Style': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readStyle_),
+ 'MinScaleDenominator': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'MaxScaleDenominator': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'Layer': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readLayer_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.ATTRIBUTION_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Title': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'OnlineResource': ol.xml.makeObjectPropertySetter(
+ ol.format.XLink.readHref),
+ 'LogoURL': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readSizedFormatOnlineresource_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.EX_GEOGRAPHIC_BOUNDING_BOX_PARSERS_ =
+ ol.xml.makeStructureNS(ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'westBoundLongitude': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'eastBoundLongitude': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'southBoundLatitude': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'northBoundLatitude': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.REQUEST_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'GetCapabilities': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readOperationType_),
+ 'GetMap': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readOperationType_),
+ 'GetFeatureInfo': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readOperationType_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.OPERATIONTYPE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Format': ol.xml.makeObjectPropertyPusher(ol.format.XSD.readString),
+ 'DCPType': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readDCPType_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.DCPTYPE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'HTTP': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readHTTP_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.HTTP_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Get': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readFormatOnlineresource_),
+ 'Post': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readFormatOnlineresource_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Name': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Title': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'Abstract': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'LegendURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMSCapabilities.readSizedFormatOnlineresource_),
+ 'StyleSheetURL': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readFormatOnlineresource_),
+ 'StyleURL': ol.xml.makeObjectPropertySetter(
+ ol.format.WMSCapabilities.readFormatOnlineresource_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.FORMAT_ONLINERESOURCE_PARSERS_ =
+ ol.xml.makeStructureNS(ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Format': ol.xml.makeObjectPropertySetter(ol.format.XSD.readString),
+ 'OnlineResource': ol.xml.makeObjectPropertySetter(
+ ol.format.XLink.readHref)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMSCapabilities.KEYWORDLIST_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMSCapabilities.NAMESPACE_URIS_, {
+ 'Keyword': ol.xml.makeArrayPusher(ol.format.XSD.readString)
+ });
+
+goog.provide('ol.format.WMSGetFeatureInfo');
+
+goog.require('goog.asserts');
+goog.require('ol.array');
+goog.require('ol.format.GML2');
+goog.require('ol.format.XMLFeature');
+goog.require('ol.object');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Format for reading WMSGetFeatureInfo format. It uses
+ * {@link ol.format.GML2} to read features.
+ *
+ * @constructor
+ * @extends {ol.format.XMLFeature}
+ * @param {olx.format.WMSGetFeatureInfoOptions=} opt_options Options.
+ * @api
+ */
+ol.format.WMSGetFeatureInfo = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.featureNS_ = 'http://mapserver.gis.umn.edu/mapserver';
+
+
+ /**
+ * @private
+ * @type {ol.format.GML2}
+ */
+ this.gmlFormat_ = new ol.format.GML2();
+
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.layers_ = options.layers ? options.layers : null;
+
+ ol.format.XMLFeature.call(this);
+};
+ol.inherits(ol.format.WMSGetFeatureInfo, ol.format.XMLFeature);
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.WMSGetFeatureInfo.featureIdentifier_ = '_feature';
+
+
+/**
+ * @const
+ * @type {string}
+ * @private
+ */
+ol.format.WMSGetFeatureInfo.layerIdentifier_ = '_layer';
+
+
+/**
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Array.<ol.Feature>} Features.
+ * @private
+ */
+ol.format.WMSGetFeatureInfo.prototype.readFeatures_ = function(node, objectStack) {
+
+ node.setAttribute('namespaceURI', this.featureNS_);
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ var localName = node.localName;
+ /** @type {Array.<ol.Feature>} */
+ var features = [];
+ if (node.childNodes.length === 0) {
+ return features;
+ }
+ if (localName == 'msGMLOutput') {
+ for (var i = 0, ii = node.childNodes.length; i < ii; i++) {
+ var layer = node.childNodes[i];
+ if (layer.nodeType !== Node.ELEMENT_NODE) {
+ continue;
+ }
+ var context = objectStack[0];
+ goog.asserts.assert(goog.isObject(context),
+ 'context should be an Object');
+
+ goog.asserts.assert(layer.localName.indexOf(
+ ol.format.WMSGetFeatureInfo.layerIdentifier_) >= 0,
+ 'localName of layer node should match layerIdentifier');
+
+ var toRemove = ol.format.WMSGetFeatureInfo.layerIdentifier_;
+ var layerName = layer.localName.replace(toRemove, '');
+
+ if (this.layers_ && !ol.array.includes(this.layers_, layerName)) {
+ continue;
+ }
+
+ var featureType = layerName +
+ ol.format.WMSGetFeatureInfo.featureIdentifier_;
+
+ context['featureType'] = featureType;
+ context['featureNS'] = this.featureNS_;
+
+ var parsers = {};
+ parsers[featureType] = ol.xml.makeArrayPusher(
+ this.gmlFormat_.readFeatureElement, this.gmlFormat_);
+ var parsersNS = ol.xml.makeStructureNS(
+ [context['featureNS'], null], parsers);
+ layer.setAttribute('namespaceURI', this.featureNS_);
+ var layerFeatures = ol.xml.pushParseAndPop(
+ [], parsersNS, layer, objectStack, this.gmlFormat_);
+ if (layerFeatures) {
+ ol.array.extend(features, layerFeatures);
+ }
+ }
+ }
+ if (localName == 'FeatureCollection') {
+ var gmlFeatures = ol.xml.pushParseAndPop([],
+ this.gmlFormat_.FEATURE_COLLECTION_PARSERS, node,
+ [{}], this.gmlFormat_);
+ if (gmlFeatures) {
+ features = gmlFeatures;
+ }
+ }
+ return features;
+};
+
+
+/**
+ * Read all features from a WMSGetFeatureInfo response.
+ *
+ * @function
+ * @param {Document|Node|Object|string} source Source.
+ * @param {olx.format.ReadOptions=} opt_options Options.
+ * @return {Array.<ol.Feature>} Features.
+ * @api stable
+ */
+ol.format.WMSGetFeatureInfo.prototype.readFeatures;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.WMSGetFeatureInfo.prototype.readFeaturesFromNode = function(node, opt_options) {
+ var options = {};
+ if (opt_options) {
+ ol.object.assign(options, this.getReadOptions(node, opt_options));
+ }
+ return this.readFeatures_(node, [options]);
+};
+
+goog.provide('ol.format.WMTSCapabilities');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.format.OWS');
+goog.require('ol.format.XLink');
+goog.require('ol.format.XML');
+goog.require('ol.format.XSD');
+goog.require('ol.xml');
+
+
+/**
+ * @classdesc
+ * Format for reading WMTS capabilities data.
+ *
+ * @constructor
+ * @extends {ol.format.XML}
+ * @api
+ */
+ol.format.WMTSCapabilities = function() {
+ ol.format.XML.call(this);
+
+ /**
+ * @type {ol.format.OWS}
+ * @private
+ */
+ this.owsParser_ = new ol.format.OWS();
+};
+ol.inherits(ol.format.WMTSCapabilities, ol.format.XML);
+
+
+/**
+ * Read a WMTS capabilities document.
+ *
+ * @function
+ * @param {Document|Node|string} source The XML source.
+ * @return {Object} An object representing the WMTS capabilities.
+ * @api
+ */
+ol.format.WMTSCapabilities.prototype.read;
+
+
+/**
+ * @param {Document} doc Document.
+ * @return {Object} WMTS Capability object.
+ */
+ol.format.WMTSCapabilities.prototype.readFromDocument = function(doc) {
+ goog.asserts.assert(doc.nodeType == Node.DOCUMENT_NODE,
+ 'doc.nodeType should be DOCUMENT');
+ for (var n = doc.firstChild; n; n = n.nextSibling) {
+ if (n.nodeType == Node.ELEMENT_NODE) {
+ return this.readFromNode(n);
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {Object} WMTS Capability object.
+ */
+ol.format.WMTSCapabilities.prototype.readFromNode = function(node) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Capabilities',
+ 'localName should be Capabilities');
+ var version = node.getAttribute('version').trim();
+ goog.asserts.assertString(version, 'version should be a string');
+ var WMTSCapabilityObject = this.owsParser_.readFromNode(node);
+ if (!WMTSCapabilityObject) {
+ return null;
+ }
+ WMTSCapabilityObject['version'] = version;
+ WMTSCapabilityObject = ol.xml.pushParseAndPop(WMTSCapabilityObject,
+ ol.format.WMTSCapabilities.PARSERS_, node, []);
+ return WMTSCapabilityObject ? WMTSCapabilityObject : null;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Attribution object.
+ */
+ol.format.WMTSCapabilities.readContents_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Contents',
+ 'localName should be Contents');
+
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.CONTENTS_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Layers object.
+ */
+ol.format.WMTSCapabilities.readLayer_ = function(node, objectStack) {
+ goog.asserts.assert(node.nodeType == Node.ELEMENT_NODE,
+ 'node.nodeType should be ELEMENT');
+ goog.asserts.assert(node.localName == 'Layer', 'localName should be Layer');
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.LAYER_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Tile Matrix Set object.
+ */
+ol.format.WMTSCapabilities.readTileMatrixSet_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.TMS_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Style object.
+ */
+ol.format.WMTSCapabilities.readStyle_ = function(node, objectStack) {
+ var style = ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.STYLE_PARSERS_, node, objectStack);
+ if (!style) {
+ return undefined;
+ }
+ var isDefault = node.getAttribute('isDefault') === 'true';
+ style['isDefault'] = isDefault;
+ return style;
+
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Tile Matrix Set Link object.
+ */
+ol.format.WMTSCapabilities.readTileMatrixSetLink_ = function(node,
+ objectStack) {
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.TMS_LINKS_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Dimension object.
+ */
+ol.format.WMTSCapabilities.readDimensions_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.DIMENSION_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Resource URL object.
+ */
+ol.format.WMTSCapabilities.readResourceUrl_ = function(node, objectStack) {
+ var format = node.getAttribute('format');
+ var template = node.getAttribute('template');
+ var resourceType = node.getAttribute('resourceType');
+ var resource = {};
+ if (format) {
+ resource['format'] = format;
+ }
+ if (template) {
+ resource['template'] = template;
+ }
+ if (resourceType) {
+ resource['resourceType'] = resourceType;
+ }
+ return resource;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} WGS84 BBox object.
+ */
+ol.format.WMTSCapabilities.readWgs84BoundingBox_ = function(node, objectStack) {
+ var coordinates = ol.xml.pushParseAndPop([],
+ ol.format.WMTSCapabilities.WGS84_BBOX_READERS_, node, objectStack);
+ if (coordinates.length != 2) {
+ return undefined;
+ }
+ return ol.extent.boundingExtent(coordinates);
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Legend object.
+ */
+ol.format.WMTSCapabilities.readLegendUrl_ = function(node, objectStack) {
+ var legend = {};
+ legend['format'] = node.getAttribute('format');
+ legend['href'] = ol.format.XLink.readHref(node);
+ return legend;
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} Coordinates object.
+ */
+ol.format.WMTSCapabilities.readCoordinates_ = function(node, objectStack) {
+ var coordinates = ol.format.XSD.readString(node).split(' ');
+ if (!coordinates || coordinates.length != 2) {
+ return undefined;
+ }
+ var x = +coordinates[0];
+ var y = +coordinates[1];
+ if (isNaN(x) || isNaN(y)) {
+ return undefined;
+ }
+ return [x, y];
+};
+
+
+/**
+ * @private
+ * @param {Node} node Node.
+ * @param {Array.<*>} objectStack Object stack.
+ * @return {Object|undefined} TileMatrix object.
+ */
+ol.format.WMTSCapabilities.readTileMatrix_ = function(node, objectStack) {
+ return ol.xml.pushParseAndPop({},
+ ol.format.WMTSCapabilities.TM_PARSERS_, node, objectStack);
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.format.WMTSCapabilities.NAMESPACE_URIS_ = [
+ null,
+ 'http://www.opengis.net/wmts/1.0'
+];
+
+
+/**
+ * @const
+ * @private
+ * @type {Array.<string>}
+ */
+ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_ = [
+ null,
+ 'http://www.opengis.net/ows/1.1'
+];
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'Contents': ol.xml.makeObjectPropertySetter(
+ ol.format.WMTSCapabilities.readContents_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.CONTENTS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'Layer': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readLayer_),
+ 'TileMatrixSet': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readTileMatrixSet_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.LAYER_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'Style': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readStyle_),
+ 'Format': ol.xml.makeObjectPropertyPusher(
+ ol.format.XSD.readString),
+ 'TileMatrixSetLink': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readTileMatrixSetLink_),
+ 'Dimension': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readDimensions_),
+ 'ResourceURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readResourceUrl_)
+ }, ol.xml.makeStructureNS(ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'Title': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'Abstract': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'WGS84BoundingBox': ol.xml.makeObjectPropertySetter(
+ ol.format.WMTSCapabilities.readWgs84BoundingBox_),
+ 'Identifier': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.STYLE_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'LegendURL': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readLegendUrl_)
+ }, ol.xml.makeStructureNS(ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'Title': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'Identifier': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.TMS_LINKS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'TileMatrixSet': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.DIMENSION_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'Default': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'Value': ol.xml.makeObjectPropertyPusher(
+ ol.format.XSD.readString)
+ }, ol.xml.makeStructureNS(ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'Identifier': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.WGS84_BBOX_READERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'LowerCorner': ol.xml.makeArrayPusher(
+ ol.format.WMTSCapabilities.readCoordinates_),
+ 'UpperCorner': ol.xml.makeArrayPusher(
+ ol.format.WMTSCapabilities.readCoordinates_)
+ });
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.TMS_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'WellKnownScaleSet': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'TileMatrix': ol.xml.makeObjectPropertyPusher(
+ ol.format.WMTSCapabilities.readTileMatrix_)
+ }, ol.xml.makeStructureNS(ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'SupportedCRS': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString),
+ 'Identifier': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ }));
+
+
+/**
+ * @const
+ * @type {Object.<string, Object.<string, ol.XmlParser>>}
+ * @private
+ */
+ol.format.WMTSCapabilities.TM_PARSERS_ = ol.xml.makeStructureNS(
+ ol.format.WMTSCapabilities.NAMESPACE_URIS_, {
+ 'TopLeftCorner': ol.xml.makeObjectPropertySetter(
+ ol.format.WMTSCapabilities.readCoordinates_),
+ 'ScaleDenominator': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readDecimal),
+ 'TileWidth': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'TileHeight': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'MatrixWidth': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger),
+ 'MatrixHeight': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readNonNegativeInteger)
+ }, ol.xml.makeStructureNS(ol.format.WMTSCapabilities.OWS_NAMESPACE_URIS_, {
+ 'Identifier': ol.xml.makeObjectPropertySetter(
+ ol.format.XSD.readString)
+ }));
+
+// FIXME handle geolocation not supported
+
+goog.provide('ol.Geolocation');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.Object');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.Polygon');
+goog.require('ol.has');
+goog.require('ol.math');
+goog.require('ol.proj');
+goog.require('ol.sphere.WGS84');
+
+
+/**
+ * @enum {string}
+ */
+ol.GeolocationProperty = {
+ ACCURACY: 'accuracy',
+ ACCURACY_GEOMETRY: 'accuracyGeometry',
+ ALTITUDE: 'altitude',
+ ALTITUDE_ACCURACY: 'altitudeAccuracy',
+ HEADING: 'heading',
+ POSITION: 'position',
+ PROJECTION: 'projection',
+ SPEED: 'speed',
+ TRACKING: 'tracking',
+ TRACKING_OPTIONS: 'trackingOptions'
+};
+
+
+/**
+ * @classdesc
+ * Helper class for providing HTML5 Geolocation capabilities.
+ * The [Geolocation API](http://www.w3.org/TR/geolocation-API/)
+ * is used to locate a user's position.
+ *
+ * To get notified of position changes, register a listener for the generic
+ * `change` event on your instance of `ol.Geolocation`.
+ *
+ * Example:
+ *
+ * var geolocation = new ol.Geolocation({
+ * // take the projection to use from the map's view
+ * projection: view.getProjection()
+ * });
+ * // listen to changes in position
+ * geolocation.on('change', function(evt) {
+ * window.console.log(geolocation.getPosition());
+ * });
+ *
+ * @fires error
+ * @constructor
+ * @extends {ol.Object}
+ * @param {olx.GeolocationOptions=} opt_options Options.
+ * @api stable
+ */
+ol.Geolocation = function(opt_options) {
+
+ ol.Object.call(this);
+
+ var options = opt_options || {};
+
+ /**
+ * The unprojected (EPSG:4326) device position.
+ * @private
+ * @type {ol.Coordinate}
+ */
+ this.position_ = null;
+
+ /**
+ * @private
+ * @type {ol.TransformFunction}
+ */
+ this.transform_ = ol.proj.identityTransform;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.watchId_ = undefined;
+
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.GeolocationProperty.PROJECTION),
+ this.handleProjectionChanged_, this);
+ ol.events.listen(
+ this, ol.Object.getChangeEventType(ol.GeolocationProperty.TRACKING),
+ this.handleTrackingChanged_, this);
+
+ if (options.projection !== undefined) {
+ this.setProjection(ol.proj.get(options.projection));
+ }
+ if (options.trackingOptions !== undefined) {
+ this.setTrackingOptions(options.trackingOptions);
+ }
+
+ this.setTracking(options.tracking !== undefined ? options.tracking : false);
+
+};
+ol.inherits(ol.Geolocation, ol.Object);
+
+
+/**
+ * @inheritDoc
+ */
+ol.Geolocation.prototype.disposeInternal = function() {
+ this.setTracking(false);
+ ol.Object.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @private
+ */
+ol.Geolocation.prototype.handleProjectionChanged_ = function() {
+ var projection = this.getProjection();
+ if (projection) {
+ this.transform_ = ol.proj.getTransformFromProjections(
+ ol.proj.get('EPSG:4326'), projection);
+ if (this.position_) {
+ this.set(
+ ol.GeolocationProperty.POSITION, this.transform_(this.position_));
+ }
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.Geolocation.prototype.handleTrackingChanged_ = function() {
+ if (ol.has.GEOLOCATION) {
+ var tracking = this.getTracking();
+ if (tracking && this.watchId_ === undefined) {
+ this.watchId_ = ol.global.navigator.geolocation.watchPosition(
+ this.positionChange_.bind(this),
+ this.positionError_.bind(this),
+ this.getTrackingOptions());
+ } else if (!tracking && this.watchId_ !== undefined) {
+ ol.global.navigator.geolocation.clearWatch(this.watchId_);
+ this.watchId_ = undefined;
+ }
+ }
+};
+
+
+/**
+ * @private
+ * @param {GeolocationPosition} position position event.
+ */
+ol.Geolocation.prototype.positionChange_ = function(position) {
+ var coords = position.coords;
+ this.set(ol.GeolocationProperty.ACCURACY, coords.accuracy);
+ this.set(ol.GeolocationProperty.ALTITUDE,
+ coords.altitude === null ? undefined : coords.altitude);
+ this.set(ol.GeolocationProperty.ALTITUDE_ACCURACY,
+ coords.altitudeAccuracy === null ?
+ undefined : coords.altitudeAccuracy);
+ this.set(ol.GeolocationProperty.HEADING, coords.heading === null ?
+ undefined : ol.math.toRadians(coords.heading));
+ if (!this.position_) {
+ this.position_ = [coords.longitude, coords.latitude];
+ } else {
+ this.position_[0] = coords.longitude;
+ this.position_[1] = coords.latitude;
+ }
+ var projectedPosition = this.transform_(this.position_);
+ this.set(ol.GeolocationProperty.POSITION, projectedPosition);
+ this.set(ol.GeolocationProperty.SPEED,
+ coords.speed === null ? undefined : coords.speed);
+ var geometry = ol.geom.Polygon.circular(
+ ol.sphere.WGS84, this.position_, coords.accuracy);
+ geometry.applyTransform(this.transform_);
+ this.set(ol.GeolocationProperty.ACCURACY_GEOMETRY, geometry);
+ this.changed();
+};
+
+/**
+ * Triggered when the Geolocation returns an error.
+ * @event error
+ * @api
+ */
+
+/**
+ * @private
+ * @param {GeolocationPositionError} error error object.
+ */
+ol.Geolocation.prototype.positionError_ = function(error) {
+ error.type = ol.events.EventType.ERROR;
+ this.setTracking(false);
+ this.dispatchEvent(/** @type {{type: string, target: undefined}} */ (error));
+};
+
+
+/**
+ * Get the accuracy of the position in meters.
+ * @return {number|undefined} The accuracy of the position measurement in
+ * meters.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getAccuracy = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.GeolocationProperty.ACCURACY));
+};
+
+
+/**
+ * Get a geometry of the position accuracy.
+ * @return {?ol.geom.Geometry} A geometry of the position accuracy.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getAccuracyGeometry = function() {
+ return /** @type {?ol.geom.Geometry} */ (
+ this.get(ol.GeolocationProperty.ACCURACY_GEOMETRY) || null);
+};
+
+
+/**
+ * Get the altitude associated with the position.
+ * @return {number|undefined} The altitude of the position in meters above mean
+ * sea level.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getAltitude = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.GeolocationProperty.ALTITUDE));
+};
+
+
+/**
+ * Get the altitude accuracy of the position.
+ * @return {number|undefined} The accuracy of the altitude measurement in
+ * meters.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getAltitudeAccuracy = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.GeolocationProperty.ALTITUDE_ACCURACY));
+};
+
+
+/**
+ * Get the heading as radians clockwise from North.
+ * @return {number|undefined} The heading of the device in radians from north.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getHeading = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.GeolocationProperty.HEADING));
+};
+
+
+/**
+ * Get the position of the device.
+ * @return {ol.Coordinate|undefined} The current position of the device reported
+ * in the current projection.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getPosition = function() {
+ return /** @type {ol.Coordinate|undefined} */ (
+ this.get(ol.GeolocationProperty.POSITION));
+};
+
+
+/**
+ * Get the projection associated with the position.
+ * @return {ol.proj.Projection|undefined} The projection the position is
+ * reported in.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getProjection = function() {
+ return /** @type {ol.proj.Projection|undefined} */ (
+ this.get(ol.GeolocationProperty.PROJECTION));
+};
+
+
+/**
+ * Get the speed in meters per second.
+ * @return {number|undefined} The instantaneous speed of the device in meters
+ * per second.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getSpeed = function() {
+ return /** @type {number|undefined} */ (
+ this.get(ol.GeolocationProperty.SPEED));
+};
+
+
+/**
+ * Determine if the device location is being tracked.
+ * @return {boolean} The device location is being tracked.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getTracking = function() {
+ return /** @type {boolean} */ (
+ this.get(ol.GeolocationProperty.TRACKING));
+};
+
+
+/**
+ * Get the tracking options.
+ * @see http://www.w3.org/TR/geolocation-API/#position-options
+ * @return {GeolocationPositionOptions|undefined} PositionOptions as defined by
+ * the [HTML5 Geolocation spec
+ * ](http://www.w3.org/TR/geolocation-API/#position_options_interface).
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.getTrackingOptions = function() {
+ return /** @type {GeolocationPositionOptions|undefined} */ (
+ this.get(ol.GeolocationProperty.TRACKING_OPTIONS));
+};
+
+
+/**
+ * Set the projection to use for transforming the coordinates.
+ * @param {ol.proj.Projection} projection The projection the position is
+ * reported in.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.setProjection = function(projection) {
+ this.set(ol.GeolocationProperty.PROJECTION, projection);
+};
+
+
+/**
+ * Enable or disable tracking.
+ * @param {boolean} tracking Enable tracking.
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.setTracking = function(tracking) {
+ this.set(ol.GeolocationProperty.TRACKING, tracking);
+};
+
+
+/**
+ * Set the tracking options.
+ * @see http://www.w3.org/TR/geolocation-API/#position-options
+ * @param {GeolocationPositionOptions} options PositionOptions as defined by the
+ * [HTML5 Geolocation spec
+ * ](http://www.w3.org/TR/geolocation-API/#position_options_interface).
+ * @observable
+ * @api stable
+ */
+ol.Geolocation.prototype.setTrackingOptions = function(options) {
+ this.set(ol.GeolocationProperty.TRACKING_OPTIONS, options);
+};
+
+goog.provide('ol.geom.Circle');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.geom.flat.deflate');
+
+
+/**
+ * @classdesc
+ * Circle geometry.
+ *
+ * @constructor
+ * @extends {ol.geom.SimpleGeometry}
+ * @param {ol.Coordinate} center Center.
+ * @param {number=} opt_radius Radius.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api
+ */
+ol.geom.Circle = function(center, opt_radius, opt_layout) {
+ ol.geom.SimpleGeometry.call(this);
+ var radius = opt_radius ? opt_radius : 0;
+ this.setCenterAndRadius(center, radius, opt_layout);
+};
+ol.inherits(ol.geom.Circle, ol.geom.SimpleGeometry);
+
+
+/**
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Circle} Clone.
+ * @api
+ */
+ol.geom.Circle.prototype.clone = function() {
+ var circle = new ol.geom.Circle(null);
+ circle.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
+ return circle;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Circle.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
+ var flatCoordinates = this.flatCoordinates;
+ var dx = x - flatCoordinates[0];
+ var dy = y - flatCoordinates[1];
+ var squaredDistance = dx * dx + dy * dy;
+ if (squaredDistance < minSquaredDistance) {
+ var i;
+ if (squaredDistance === 0) {
+ for (i = 0; i < this.stride; ++i) {
+ closestPoint[i] = flatCoordinates[i];
+ }
+ } else {
+ var delta = this.getRadius() / Math.sqrt(squaredDistance);
+ closestPoint[0] = flatCoordinates[0] + delta * dx;
+ closestPoint[1] = flatCoordinates[1] + delta * dy;
+ for (i = 2; i < this.stride; ++i) {
+ closestPoint[i] = flatCoordinates[i];
+ }
+ }
+ closestPoint.length = this.stride;
+ return squaredDistance;
+ } else {
+ return minSquaredDistance;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Circle.prototype.containsXY = function(x, y) {
+ var flatCoordinates = this.flatCoordinates;
+ var dx = x - flatCoordinates[0];
+ var dy = y - flatCoordinates[1];
+ return dx * dx + dy * dy <= this.getRadiusSquared_();
+};
+
+
+/**
+ * Return the center of the circle as {@link ol.Coordinate coordinate}.
+ * @return {ol.Coordinate} Center.
+ * @api
+ */
+ol.geom.Circle.prototype.getCenter = function() {
+ return this.flatCoordinates.slice(0, this.stride);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Circle.prototype.computeExtent = function(extent) {
+ var flatCoordinates = this.flatCoordinates;
+ var radius = flatCoordinates[this.stride] - flatCoordinates[0];
+ return ol.extent.createOrUpdate(
+ flatCoordinates[0] - radius, flatCoordinates[1] - radius,
+ flatCoordinates[0] + radius, flatCoordinates[1] + radius,
+ extent);
+};
+
+
+/**
+ * Return the radius of the circle.
+ * @return {number} Radius.
+ * @api
+ */
+ol.geom.Circle.prototype.getRadius = function() {
+ return Math.sqrt(this.getRadiusSquared_());
+};
+
+
+/**
+ * @private
+ * @return {number} Radius squared.
+ */
+ol.geom.Circle.prototype.getRadiusSquared_ = function() {
+ var dx = this.flatCoordinates[this.stride] - this.flatCoordinates[0];
+ var dy = this.flatCoordinates[this.stride + 1] - this.flatCoordinates[1];
+ return dx * dx + dy * dy;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.geom.Circle.prototype.getType = function() {
+ return ol.geom.GeometryType.CIRCLE;
+};
+
+
+/**
+ * @inheritDoc
+ * @api stable
+ */
+ol.geom.Circle.prototype.intersectsExtent = function(extent) {
+ var circleExtent = this.getExtent();
+ if (ol.extent.intersects(extent, circleExtent)) {
+ var center = this.getCenter();
+
+ if (extent[0] <= center[0] && extent[2] >= center[0]) {
+ return true;
+ }
+ if (extent[1] <= center[1] && extent[3] >= center[1]) {
+ return true;
+ }
+
+ return ol.extent.forEachCorner(extent, this.containsCoordinate, this);
+ }
+ return false;
+
+};
+
+
+/**
+ * Set the center of the circle as {@link ol.Coordinate coordinate}.
+ * @param {ol.Coordinate} center Center.
+ * @api
+ */
+ol.geom.Circle.prototype.setCenter = function(center) {
+ var stride = this.stride;
+ goog.asserts.assert(center.length == stride,
+ 'center array length should match stride');
+ var radius = this.flatCoordinates[stride] - this.flatCoordinates[0];
+ var flatCoordinates = center.slice();
+ flatCoordinates[stride] = flatCoordinates[0] + radius;
+ var i;
+ for (i = 1; i < stride; ++i) {
+ flatCoordinates[stride + i] = center[i];
+ }
+ this.setFlatCoordinates(this.layout, flatCoordinates);
+};
+
+
+/**
+ * Set the center (as {@link ol.Coordinate coordinate}) and the radius (as
+ * number) of the circle.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} radius Radius.
+ * @param {ol.geom.GeometryLayout=} opt_layout Layout.
+ * @api
+ */
+ol.geom.Circle.prototype.setCenterAndRadius = function(center, radius, opt_layout) {
+ if (!center) {
+ this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
+ } else {
+ this.setLayout(opt_layout, center, 0);
+ if (!this.flatCoordinates) {
+ this.flatCoordinates = [];
+ }
+ /** @type {Array.<number>} */
+ var flatCoordinates = this.flatCoordinates;
+ var offset = ol.geom.flat.deflate.coordinate(
+ flatCoordinates, 0, center, this.stride);
+ flatCoordinates[offset++] = flatCoordinates[0] + radius;
+ var i, ii;
+ for (i = 1, ii = this.stride; i < ii; ++i) {
+ flatCoordinates[offset++] = flatCoordinates[i];
+ }
+ flatCoordinates.length = offset;
+ this.changed();
+ }
+};
+
+
+/**
+ * @param {ol.geom.GeometryLayout} layout Layout.
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ */
+ol.geom.Circle.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
+ this.setFlatCoordinatesInternal(layout, flatCoordinates);
+ this.changed();
+};
+
+
+/**
+ * Set the radius of the circle. The radius is in the units of the projection.
+ * @param {number} radius Radius.
+ * @api
+ */
+ol.geom.Circle.prototype.setRadius = function(radius) {
+ goog.asserts.assert(this.flatCoordinates,
+ 'truthy this.flatCoordinates expected');
+ this.flatCoordinates[this.stride] = this.flatCoordinates[0] + radius;
+ this.changed();
+};
+
+
+/**
+ * Transform each coordinate of the circle from one coordinate reference system
+ * to another. The geometry is modified in place.
+ * If you do not want the geometry modified in place, first clone() it and
+ * then use this function on the clone.
+ *
+ * Internally a circle is currently represented by two points: the center of
+ * the circle `[cx, cy]`, and the point to the right of the circle
+ * `[cx + r, cy]`. This `transform` function just transforms these two points.
+ * So the resulting geometry is also a circle, and that circle does not
+ * correspond to the shape that would be obtained by transforming every point
+ * of the original circle.
+ *
+ * @param {ol.ProjectionLike} source The current projection. Can be a
+ * string identifier or a {@link ol.proj.Projection} object.
+ * @param {ol.ProjectionLike} destination The desired projection. Can be a
+ * string identifier or a {@link ol.proj.Projection} object.
+ * @return {ol.geom.Circle} This geometry. Note that original geometry is
+ * modified in place.
+ * @function
+ * @api stable
+ */
+ol.geom.Circle.prototype.transform;
+
+goog.provide('ol.geom.flat.geodesic');
+
+goog.require('goog.asserts');
+goog.require('ol.math');
+goog.require('ol.proj');
+
+
+/**
+ * @private
+ * @param {function(number): ol.Coordinate} interpolate Interpolate function.
+ * @param {ol.TransformFunction} transform Transform from longitude/latitude to
+ * projected coordinates.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.geom.flat.geodesic.line_ = function(interpolate, transform, squaredTolerance) {
+ // FIXME reduce garbage generation
+ // FIXME optimize stack operations
+
+ /** @type {Array.<number>} */
+ var flatCoordinates = [];
+
+ var geoA = interpolate(0);
+ var geoB = interpolate(1);
+
+ var a = transform(geoA);
+ var b = transform(geoB);
+
+ /** @type {Array.<ol.Coordinate>} */
+ var geoStack = [geoB, geoA];
+ /** @type {Array.<ol.Coordinate>} */
+ var stack = [b, a];
+ /** @type {Array.<number>} */
+ var fractionStack = [1, 0];
+
+ /** @type {Object.<string, boolean>} */
+ var fractions = {};
+
+ var maxIterations = 1e5;
+ var geoM, m, fracA, fracB, fracM, key;
+
+ while (--maxIterations > 0 && fractionStack.length > 0) {
+ // Pop the a coordinate off the stack
+ fracA = fractionStack.pop();
+ geoA = geoStack.pop();
+ a = stack.pop();
+ // Add the a coordinate if it has not been added yet
+ key = fracA.toString();
+ if (!(key in fractions)) {
+ flatCoordinates.push(a[0], a[1]);
+ fractions[key] = true;
+ }
+ // Pop the b coordinate off the stack
+ fracB = fractionStack.pop();
+ geoB = geoStack.pop();
+ b = stack.pop();
+ // Find the m point between the a and b coordinates
+ fracM = (fracA + fracB) / 2;
+ geoM = interpolate(fracM);
+ m = transform(geoM);
+ if (ol.math.squaredSegmentDistance(m[0], m[1], a[0], a[1],
+ b[0], b[1]) < squaredTolerance) {
+ // If the m point is sufficiently close to the straight line, then we
+ // discard it. Just use the b coordinate and move on to the next line
+ // segment.
+ flatCoordinates.push(b[0], b[1]);
+ key = fracB.toString();
+ goog.asserts.assert(!(key in fractions),
+ 'fractions object should contain key : ' + key);
+ fractions[key] = true;
+ } else {
+ // Otherwise, we need to subdivide the current line segment. Split it
+ // into two and push the two line segments onto the stack.
+ fractionStack.push(fracB, fracM, fracM, fracA);
+ stack.push(b, m, m, a);
+ geoStack.push(geoB, geoM, geoM, geoA);
+ }
+ }
+ goog.asserts.assert(maxIterations > 0,
+ 'maxIterations should be more than 0');
+
+ return flatCoordinates;
+};
+
+
+/**
+* Generate a great-circle arcs between two lat/lon points.
+* @param {number} lon1 Longitude 1 in degrees.
+* @param {number} lat1 Latitude 1 in degrees.
+* @param {number} lon2 Longitude 2 in degrees.
+* @param {number} lat2 Latitude 2 in degrees.
+ * @param {ol.proj.Projection} projection Projection.
+* @param {number} squaredTolerance Squared tolerance.
+* @return {Array.<number>} Flat coordinates.
+*/
+ol.geom.flat.geodesic.greatCircleArc = function(
+ lon1, lat1, lon2, lat2, projection, squaredTolerance) {
+
+ var geoProjection = ol.proj.get('EPSG:4326');
+
+ var cosLat1 = Math.cos(ol.math.toRadians(lat1));
+ var sinLat1 = Math.sin(ol.math.toRadians(lat1));
+ var cosLat2 = Math.cos(ol.math.toRadians(lat2));
+ var sinLat2 = Math.sin(ol.math.toRadians(lat2));
+ var cosDeltaLon = Math.cos(ol.math.toRadians(lon2 - lon1));
+ var sinDeltaLon = Math.sin(ol.math.toRadians(lon2 - lon1));
+ var d = sinLat1 * sinLat2 + cosLat1 * cosLat2 * cosDeltaLon;
+
+ return ol.geom.flat.geodesic.line_(
+ /**
+ * @param {number} frac Fraction.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ function(frac) {
+ if (1 <= d) {
+ return [lon2, lat2];
+ }
+ var D = frac * Math.acos(d);
+ var cosD = Math.cos(D);
+ var sinD = Math.sin(D);
+ var y = sinDeltaLon * cosLat2;
+ var x = cosLat1 * sinLat2 - sinLat1 * cosLat2 * cosDeltaLon;
+ var theta = Math.atan2(y, x);
+ var lat = Math.asin(sinLat1 * cosD + cosLat1 * sinD * Math.cos(theta));
+ var lon = ol.math.toRadians(lon1) +
+ Math.atan2(Math.sin(theta) * sinD * cosLat1,
+ cosD - sinLat1 * Math.sin(lat));
+ return [ol.math.toDegrees(lon), ol.math.toDegrees(lat)];
+ }, ol.proj.getTransform(geoProjection, projection), squaredTolerance);
+};
+
+
+/**
+ * Generate a meridian (line at constant longitude).
+ * @param {number} lon Longitude.
+ * @param {number} lat1 Latitude 1.
+ * @param {number} lat2 Latitude 2.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.geom.flat.geodesic.meridian = function(lon, lat1, lat2, projection, squaredTolerance) {
+ var epsg4326Projection = ol.proj.get('EPSG:4326');
+ return ol.geom.flat.geodesic.line_(
+ /**
+ * @param {number} frac Fraction.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ function(frac) {
+ return [lon, lat1 + ((lat2 - lat1) * frac)];
+ },
+ ol.proj.getTransform(epsg4326Projection, projection), squaredTolerance);
+};
+
+
+/**
+ * Generate a parallel (line at constant latitude).
+ * @param {number} lat Latitude.
+ * @param {number} lon1 Longitude 1.
+ * @param {number} lon2 Longitude 2.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {Array.<number>} Flat coordinates.
+ */
+ol.geom.flat.geodesic.parallel = function(lat, lon1, lon2, projection, squaredTolerance) {
+ var epsg4326Projection = ol.proj.get('EPSG:4326');
+ return ol.geom.flat.geodesic.line_(
+ /**
+ * @param {number} frac Fraction.
+ * @return {ol.Coordinate} Coordinate.
+ */
+ function(frac) {
+ return [lon1 + ((lon2 - lon1) * frac), lat];
+ },
+ ol.proj.getTransform(epsg4326Projection, projection), squaredTolerance);
+};
+
+goog.provide('ol.Graticule');
+
+goog.require('goog.asserts');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.flat.geodesic');
+goog.require('ol.math');
+goog.require('ol.proj');
+goog.require('ol.render.EventType');
+goog.require('ol.style.Stroke');
+
+
+/**
+ * Render a grid for a coordinate system on a map.
+ * @constructor
+ * @param {olx.GraticuleOptions=} opt_options Options.
+ * @api
+ */
+ol.Graticule = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * @type {ol.Map}
+ * @private
+ */
+ this.map_ = null;
+
+ /**
+ * @type {ol.proj.Projection}
+ * @private
+ */
+ this.projection_ = null;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.maxLat_ = Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.maxLon_ = Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.minLat_ = -Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.minLon_ = -Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.maxLatP_ = Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.maxLonP_ = Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.minLatP_ = -Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.minLonP_ = -Infinity;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.targetSize_ = options.targetSize !== undefined ?
+ options.targetSize : 100;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.maxLines_ = options.maxLines !== undefined ? options.maxLines : 100;
+ goog.asserts.assert(this.maxLines_ > 0,
+ 'this.maxLines_ should be more than 0');
+
+ /**
+ * @type {Array.<ol.geom.LineString>}
+ * @private
+ */
+ this.meridians_ = [];
+
+ /**
+ * @type {Array.<ol.geom.LineString>}
+ * @private
+ */
+ this.parallels_ = [];
+
+ /**
+ * @type {ol.style.Stroke}
+ * @private
+ */
+ this.strokeStyle_ = options.strokeStyle !== undefined ?
+ options.strokeStyle : ol.Graticule.DEFAULT_STROKE_STYLE_;
+
+ /**
+ * @type {ol.TransformFunction|undefined}
+ * @private
+ */
+ this.fromLonLatTransform_ = undefined;
+
+ /**
+ * @type {ol.TransformFunction|undefined}
+ * @private
+ */
+ this.toLonLatTransform_ = undefined;
+
+ /**
+ * @type {ol.Coordinate}
+ * @private
+ */
+ this.projectionCenterLonLat_ = null;
+
+ this.setMap(options.map !== undefined ? options.map : null);
+};
+
+
+/**
+ * @type {ol.style.Stroke}
+ * @private
+ * @const
+ */
+ol.Graticule.DEFAULT_STROKE_STYLE_ = new ol.style.Stroke({
+ color: 'rgba(0,0,0,0.2)'
+});
+
+
+/**
+ * TODO can be configurable
+ * @type {Array.<number>}
+ * @private
+ */
+ol.Graticule.intervals_ = [90, 45, 30, 20, 10, 5, 2, 1, 0.5, 0.2, 0.1, 0.05,
+ 0.01, 0.005, 0.002, 0.001];
+
+
+/**
+ * @param {number} lon Longitude.
+ * @param {number} minLat Minimal latitude.
+ * @param {number} maxLat Maximal latitude.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} index Index.
+ * @return {number} Index.
+ * @private
+ */
+ol.Graticule.prototype.addMeridian_ = function(lon, minLat, maxLat, squaredTolerance, extent, index) {
+ var lineString = this.getMeridian_(lon, minLat, maxLat,
+ squaredTolerance, index);
+ if (ol.extent.intersects(lineString.getExtent(), extent)) {
+ this.meridians_[index++] = lineString;
+ }
+ return index;
+};
+
+
+/**
+ * @param {number} lat Latitude.
+ * @param {number} minLon Minimal longitude.
+ * @param {number} maxLon Maximal longitude.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} index Index.
+ * @return {number} Index.
+ * @private
+ */
+ol.Graticule.prototype.addParallel_ = function(lat, minLon, maxLon, squaredTolerance, extent, index) {
+ var lineString = this.getParallel_(lat, minLon, maxLon, squaredTolerance,
+ index);
+ if (ol.extent.intersects(lineString.getExtent(), extent)) {
+ this.parallels_[index++] = lineString;
+ }
+ return index;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Coordinate} center Center.
+ * @param {number} resolution Resolution.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @private
+ */
+ol.Graticule.prototype.createGraticule_ = function(extent, center, resolution, squaredTolerance) {
+
+ var interval = this.getInterval_(resolution);
+ if (interval == -1) {
+ this.meridians_.length = this.parallels_.length = 0;
+ return;
+ }
+
+ var centerLonLat = this.toLonLatTransform_(center);
+ var centerLon = centerLonLat[0];
+ var centerLat = centerLonLat[1];
+ var maxLines = this.maxLines_;
+ var cnt, idx, lat, lon;
+
+ var validExtent = [
+ Math.max(extent[0], this.minLonP_),
+ Math.max(extent[1], this.minLatP_),
+ Math.min(extent[2], this.maxLonP_),
+ Math.min(extent[3], this.maxLatP_)
+ ];
+
+ validExtent = ol.proj.transformExtent(validExtent, this.projection_,
+ 'EPSG:4326');
+ var maxLat = validExtent[3];
+ var maxLon = validExtent[2];
+ var minLat = validExtent[1];
+ var minLon = validExtent[0];
+
+ // Create meridians
+
+ centerLon = Math.floor(centerLon / interval) * interval;
+ lon = ol.math.clamp(centerLon, this.minLon_, this.maxLon_);
+
+ idx = this.addMeridian_(lon, minLat, maxLat, squaredTolerance, extent, 0);
+
+ cnt = 0;
+ while (lon != this.minLon_ && cnt++ < maxLines) {
+ lon = Math.max(lon - interval, this.minLon_);
+ idx = this.addMeridian_(lon, minLat, maxLat, squaredTolerance, extent, idx);
+ }
+
+ lon = ol.math.clamp(centerLon, this.minLon_, this.maxLon_);
+
+ cnt = 0;
+ while (lon != this.maxLon_ && cnt++ < maxLines) {
+ lon = Math.min(lon + interval, this.maxLon_);
+ idx = this.addMeridian_(lon, minLat, maxLat, squaredTolerance, extent, idx);
+ }
+
+ this.meridians_.length = idx;
+
+ // Create parallels
+
+ centerLat = Math.floor(centerLat / interval) * interval;
+ lat = ol.math.clamp(centerLat, this.minLat_, this.maxLat_);
+
+ idx = this.addParallel_(lat, minLon, maxLon, squaredTolerance, extent, 0);
+
+ cnt = 0;
+ while (lat != this.minLat_ && cnt++ < maxLines) {
+ lat = Math.max(lat - interval, this.minLat_);
+ idx = this.addParallel_(lat, minLon, maxLon, squaredTolerance, extent, idx);
+ }
+
+ lat = ol.math.clamp(centerLat, this.minLat_, this.maxLat_);
+
+ cnt = 0;
+ while (lat != this.maxLat_ && cnt++ < maxLines) {
+ lat = Math.min(lat + interval, this.maxLat_);
+ idx = this.addParallel_(lat, minLon, maxLon, squaredTolerance, extent, idx);
+ }
+
+ this.parallels_.length = idx;
+
+};
+
+
+/**
+ * @param {number} resolution Resolution.
+ * @return {number} The interval in degrees.
+ * @private
+ */
+ol.Graticule.prototype.getInterval_ = function(resolution) {
+ var centerLon = this.projectionCenterLonLat_[0];
+ var centerLat = this.projectionCenterLonLat_[1];
+ var interval = -1;
+ var i, ii, delta, dist;
+ var target = Math.pow(this.targetSize_ * resolution, 2);
+ /** @type {Array.<number>} **/
+ var p1 = [];
+ /** @type {Array.<number>} **/
+ var p2 = [];
+ for (i = 0, ii = ol.Graticule.intervals_.length; i < ii; ++i) {
+ delta = ol.Graticule.intervals_[i] / 2;
+ p1[0] = centerLon - delta;
+ p1[1] = centerLat - delta;
+ p2[0] = centerLon + delta;
+ p2[1] = centerLat + delta;
+ this.fromLonLatTransform_(p1, p1);
+ this.fromLonLatTransform_(p2, p2);
+ dist = Math.pow(p2[0] - p1[0], 2) + Math.pow(p2[1] - p1[1], 2);
+ if (dist <= target) {
+ break;
+ }
+ interval = ol.Graticule.intervals_[i];
+ }
+ return interval;
+};
+
+
+/**
+ * Get the map associated with this graticule.
+ * @return {ol.Map} The map.
+ * @api
+ */
+ol.Graticule.prototype.getMap = function() {
+ return this.map_;
+};
+
+
+/**
+ * @param {number} lon Longitude.
+ * @param {number} minLat Minimal latitude.
+ * @param {number} maxLat Maximal latitude.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {ol.geom.LineString} The meridian line string.
+ * @param {number} index Index.
+ * @private
+ */
+ol.Graticule.prototype.getMeridian_ = function(lon, minLat, maxLat,
+ squaredTolerance, index) {
+ goog.asserts.assert(lon >= this.minLon_,
+ 'lon should be larger than or equal to this.minLon_');
+ goog.asserts.assert(lon <= this.maxLon_,
+ 'lon should be smaller than or equal to this.maxLon_');
+ var flatCoordinates = ol.geom.flat.geodesic.meridian(lon,
+ minLat, maxLat, this.projection_, squaredTolerance);
+ goog.asserts.assert(flatCoordinates.length > 0,
+ 'flatCoordinates cannot be empty');
+ var lineString = this.meridians_[index] !== undefined ?
+ this.meridians_[index] : new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates);
+ return lineString;
+};
+
+
+/**
+ * Get the list of meridians. Meridians are lines of equal longitude.
+ * @return {Array.<ol.geom.LineString>} The meridians.
+ * @api
+ */
+ol.Graticule.prototype.getMeridians = function() {
+ return this.meridians_;
+};
+
+
+/**
+ * @param {number} lat Latitude.
+ * @param {number} minLon Minimal longitude.
+ * @param {number} maxLon Maximal longitude.
+ * @param {number} squaredTolerance Squared tolerance.
+ * @return {ol.geom.LineString} The parallel line string.
+ * @param {number} index Index.
+ * @private
+ */
+ol.Graticule.prototype.getParallel_ = function(lat, minLon, maxLon,
+ squaredTolerance, index) {
+ goog.asserts.assert(lat >= this.minLat_,
+ 'lat should be larger than or equal to this.minLat_');
+ goog.asserts.assert(lat <= this.maxLat_,
+ 'lat should be smaller than or equal to this.maxLat_');
+ var flatCoordinates = ol.geom.flat.geodesic.parallel(lat,
+ this.minLon_, this.maxLon_, this.projection_, squaredTolerance);
+ goog.asserts.assert(flatCoordinates.length > 0,
+ 'flatCoordinates cannot be empty');
+ var lineString = this.parallels_[index] !== undefined ?
+ this.parallels_[index] : new ol.geom.LineString(null);
+ lineString.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates);
+ return lineString;
+};
+
+
+/**
+ * Get the list of parallels. Pallels are lines of equal latitude.
+ * @return {Array.<ol.geom.LineString>} The parallels.
+ * @api
+ */
+ol.Graticule.prototype.getParallels = function() {
+ return this.parallels_;
+};
+
+
+/**
+ * @param {ol.render.Event} e Event.
+ * @private
+ */
+ol.Graticule.prototype.handlePostCompose_ = function(e) {
+ var vectorContext = e.vectorContext;
+ var frameState = e.frameState;
+ var extent = frameState.extent;
+ var viewState = frameState.viewState;
+ var center = viewState.center;
+ var projection = viewState.projection;
+ var resolution = viewState.resolution;
+ var pixelRatio = frameState.pixelRatio;
+ var squaredTolerance =
+ resolution * resolution / (4 * pixelRatio * pixelRatio);
+
+ var updateProjectionInfo = !this.projection_ ||
+ !ol.proj.equivalent(this.projection_, projection);
+
+ if (updateProjectionInfo) {
+ this.updateProjectionInfo_(projection);
+ }
+
+ //Fix the extent if wrapped.
+ //(note: this is the same extent as vectorContext.extent_)
+ var offsetX = 0;
+ if (projection.canWrapX()) {
+ var projectionExtent = projection.getExtent();
+ var worldWidth = ol.extent.getWidth(projectionExtent);
+ var x = frameState.focus[0];
+ if (x < projectionExtent[0] || x > projectionExtent[2]) {
+ var worldsAway = Math.ceil((projectionExtent[0] - x) / worldWidth);
+ offsetX = worldWidth * worldsAway;
+ extent = [
+ extent[0] + offsetX, extent[1],
+ extent[2] + offsetX, extent[3]
+ ];
+ }
+ }
+
+ this.createGraticule_(extent, center, resolution, squaredTolerance);
+
+ // Draw the lines
+ vectorContext.setFillStrokeStyle(null, this.strokeStyle_);
+ var i, l, line;
+ for (i = 0, l = this.meridians_.length; i < l; ++i) {
+ line = this.meridians_[i];
+ vectorContext.drawLineString(line, null);
+ }
+ for (i = 0, l = this.parallels_.length; i < l; ++i) {
+ line = this.parallels_[i];
+ vectorContext.drawLineString(line, null);
+ }
+};
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @private
+ */
+ol.Graticule.prototype.updateProjectionInfo_ = function(projection) {
+ goog.asserts.assert(projection, 'projection cannot be null');
+
+ var epsg4326Projection = ol.proj.get('EPSG:4326');
+
+ var extent = projection.getExtent();
+ var worldExtent = projection.getWorldExtent();
+ var worldExtentP = ol.proj.transformExtent(worldExtent,
+ epsg4326Projection, projection);
+
+ var maxLat = worldExtent[3];
+ var maxLon = worldExtent[2];
+ var minLat = worldExtent[1];
+ var minLon = worldExtent[0];
+
+ var maxLatP = worldExtentP[3];
+ var maxLonP = worldExtentP[2];
+ var minLatP = worldExtentP[1];
+ var minLonP = worldExtentP[0];
+
+ goog.asserts.assert(extent, 'extent cannot be null');
+ goog.asserts.assert(maxLat !== undefined, 'maxLat should be defined');
+ goog.asserts.assert(maxLon !== undefined, 'maxLon should be defined');
+ goog.asserts.assert(minLat !== undefined, 'minLat should be defined');
+ goog.asserts.assert(minLon !== undefined, 'minLon should be defined');
+
+ goog.asserts.assert(maxLatP !== undefined,
+ 'projected maxLat should be defined');
+ goog.asserts.assert(maxLonP !== undefined,
+ 'projected maxLon should be defined');
+ goog.asserts.assert(minLatP !== undefined,
+ 'projected minLat should be defined');
+ goog.asserts.assert(minLonP !== undefined,
+ 'projected minLon should be defined');
+
+ this.maxLat_ = maxLat;
+ this.maxLon_ = maxLon;
+ this.minLat_ = minLat;
+ this.minLon_ = minLon;
+
+ this.maxLatP_ = maxLatP;
+ this.maxLonP_ = maxLonP;
+ this.minLatP_ = minLatP;
+ this.minLonP_ = minLonP;
+
+
+ this.fromLonLatTransform_ = ol.proj.getTransform(
+ epsg4326Projection, projection);
+
+ this.toLonLatTransform_ = ol.proj.getTransform(
+ projection, epsg4326Projection);
+
+ this.projectionCenterLonLat_ = this.toLonLatTransform_(
+ ol.extent.getCenter(extent));
+
+ this.projection_ = projection;
+};
+
+
+/**
+ * Set the map for this graticule. The graticule will be rendered on the
+ * provided map.
+ * @param {ol.Map} map Map.
+ * @api
+ */
+ol.Graticule.prototype.setMap = function(map) {
+ if (this.map_) {
+ this.map_.un(ol.render.EventType.POSTCOMPOSE,
+ this.handlePostCompose_, this);
+ this.map_.render();
+ }
+ if (map) {
+ map.on(ol.render.EventType.POSTCOMPOSE,
+ this.handlePostCompose_, this);
+ map.render();
+ }
+ this.map_ = map;
+};
+
+goog.provide('ol.Image');
+
+goog.require('goog.asserts');
+goog.require('ol.ImageBase');
+goog.require('ol.ImageState');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.object');
+
+
+/**
+ * @constructor
+ * @extends {ol.ImageBase}
+ * @param {ol.Extent} extent Extent.
+ * @param {number|undefined} resolution Resolution.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {Array.<ol.Attribution>} attributions Attributions.
+ * @param {string} src Image source URI.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.ImageLoadFunctionType} imageLoadFunction Image load function.
+ */
+ol.Image = function(extent, resolution, pixelRatio, attributions, src,
+ crossOrigin, imageLoadFunction) {
+
+ ol.ImageBase.call(this, extent, resolution, pixelRatio, ol.ImageState.IDLE,
+ attributions);
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.src_ = src;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement|Image|HTMLVideoElement}
+ */
+ this.image_ = new Image();
+ if (crossOrigin !== null) {
+ this.image_.crossOrigin = crossOrigin;
+ }
+
+ /**
+ * @private
+ * @type {Object.<number, (HTMLCanvasElement|Image|HTMLVideoElement)>}
+ */
+ this.imageByContext_ = {};
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.imageListenerKeys_ = null;
+
+ /**
+ * @protected
+ * @type {ol.ImageState}
+ */
+ this.state = ol.ImageState.IDLE;
+
+ /**
+ * @private
+ * @type {ol.ImageLoadFunctionType}
+ */
+ this.imageLoadFunction_ = imageLoadFunction;
+
+};
+ol.inherits(ol.Image, ol.ImageBase);
+
+
+/**
+ * Get the HTML image element (may be a Canvas, Image, or Video).
+ * @param {Object=} opt_context Object.
+ * @return {HTMLCanvasElement|Image|HTMLVideoElement} Image.
+ * @api
+ */
+ol.Image.prototype.getImage = function(opt_context) {
+ if (opt_context !== undefined) {
+ var image;
+ var key = goog.getUid(opt_context);
+ if (key in this.imageByContext_) {
+ return this.imageByContext_[key];
+ } else if (ol.object.isEmpty(this.imageByContext_)) {
+ image = this.image_;
+ } else {
+ image = /** @type {Image} */ (this.image_.cloneNode(false));
+ }
+ this.imageByContext_[key] = image;
+ return image;
+ } else {
+ return this.image_;
+ }
+};
+
+
+/**
+ * Tracks loading or read errors.
+ *
+ * @private
+ */
+ol.Image.prototype.handleImageError_ = function() {
+ this.state = ol.ImageState.ERROR;
+ this.unlistenImage_();
+ this.changed();
+};
+
+
+/**
+ * Tracks successful image load.
+ *
+ * @private
+ */
+ol.Image.prototype.handleImageLoad_ = function() {
+ if (this.resolution === undefined) {
+ this.resolution = ol.extent.getHeight(this.extent) / this.image_.height;
+ }
+ this.state = ol.ImageState.LOADED;
+ this.unlistenImage_();
+ this.changed();
+};
+
+
+/**
+ * Load the image or retry if loading previously failed.
+ * Loading is taken care of by the tile queue, and calling this method is
+ * only needed for preloading or for reloading in case of an error.
+ * @api
+ */
+ol.Image.prototype.load = function() {
+ if (this.state == ol.ImageState.IDLE || this.state == ol.ImageState.ERROR) {
+ this.state = ol.ImageState.LOADING;
+ this.changed();
+ goog.asserts.assert(!this.imageListenerKeys_,
+ 'this.imageListenerKeys_ should be null');
+ this.imageListenerKeys_ = [
+ ol.events.listenOnce(this.image_, ol.events.EventType.ERROR,
+ this.handleImageError_, this),
+ ol.events.listenOnce(this.image_, ol.events.EventType.LOAD,
+ this.handleImageLoad_, this)
+ ];
+ this.imageLoadFunction_(this, this.src_);
+ }
+};
+
+
+/**
+ * @param {HTMLCanvasElement|Image|HTMLVideoElement} image Image.
+ */
+ol.Image.prototype.setImage = function(image) {
+ this.image_ = image;
+};
+
+
+/**
+ * Discards event handlers which listen for load completion or errors.
+ *
+ * @private
+ */
+ol.Image.prototype.unlistenImage_ = function() {
+ goog.asserts.assert(this.imageListenerKeys_,
+ 'this.imageListenerKeys_ should not be null');
+ this.imageListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.imageListenerKeys_ = null;
+};
+
+goog.provide('ol.ImageTile');
+
+goog.require('goog.asserts');
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.object');
+
+
+/**
+ * @constructor
+ * @extends {ol.Tile}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileState} state State.
+ * @param {string} src Image source URI.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.TileLoadFunctionType} tileLoadFunction Tile load function.
+ */
+ol.ImageTile = function(tileCoord, state, src, crossOrigin, tileLoadFunction) {
+
+ ol.Tile.call(this, tileCoord, state);
+
+ /**
+ * Image URI
+ *
+ * @private
+ * @type {string}
+ */
+ this.src_ = src;
+
+ /**
+ * @private
+ * @type {Image}
+ */
+ this.image_ = new Image();
+ if (crossOrigin !== null) {
+ this.image_.crossOrigin = crossOrigin;
+ }
+
+ /**
+ * @private
+ * @type {Object.<number, Image>}
+ */
+ this.imageByContext_ = {};
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.imageListenerKeys_ = null;
+
+ /**
+ * @private
+ * @type {ol.TileLoadFunctionType}
+ */
+ this.tileLoadFunction_ = tileLoadFunction;
+
+};
+ol.inherits(ol.ImageTile, ol.Tile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.ImageTile.prototype.disposeInternal = function() {
+ if (this.state == ol.TileState.LOADING) {
+ this.unlistenImage_();
+ }
+ if (this.interimTile) {
+ this.interimTile.dispose();
+ }
+ this.state = ol.TileState.ABORT;
+ this.changed();
+ ol.Tile.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * Get the image element for this tile.
+ * @inheritDoc
+ * @api
+ */
+ol.ImageTile.prototype.getImage = function(opt_context) {
+ if (opt_context !== undefined) {
+ var image;
+ var key = goog.getUid(opt_context);
+ if (key in this.imageByContext_) {
+ return this.imageByContext_[key];
+ } else if (ol.object.isEmpty(this.imageByContext_)) {
+ image = this.image_;
+ } else {
+ image = /** @type {Image} */ (this.image_.cloneNode(false));
+ }
+ this.imageByContext_[key] = image;
+ return image;
+ } else {
+ return this.image_;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.ImageTile.prototype.getKey = function() {
+ return this.src_;
+};
+
+
+/**
+ * Tracks loading or read errors.
+ *
+ * @private
+ */
+ol.ImageTile.prototype.handleImageError_ = function() {
+ this.state = ol.TileState.ERROR;
+ this.unlistenImage_();
+ this.changed();
+};
+
+
+/**
+ * Tracks successful image load.
+ *
+ * @private
+ */
+ol.ImageTile.prototype.handleImageLoad_ = function() {
+ if (this.image_.naturalWidth && this.image_.naturalHeight) {
+ this.state = ol.TileState.LOADED;
+ } else {
+ this.state = ol.TileState.EMPTY;
+ }
+ this.unlistenImage_();
+ this.changed();
+};
+
+
+/**
+ * Load the image or retry if loading previously failed.
+ * Loading is taken care of by the tile queue, and calling this method is
+ * only needed for preloading or for reloading in case of an error.
+ * @api
+ */
+ol.ImageTile.prototype.load = function() {
+ if (this.state == ol.TileState.IDLE || this.state == ol.TileState.ERROR) {
+ this.state = ol.TileState.LOADING;
+ this.changed();
+ goog.asserts.assert(!this.imageListenerKeys_,
+ 'this.imageListenerKeys_ should be null');
+ this.imageListenerKeys_ = [
+ ol.events.listenOnce(this.image_, ol.events.EventType.ERROR,
+ this.handleImageError_, this),
+ ol.events.listenOnce(this.image_, ol.events.EventType.LOAD,
+ this.handleImageLoad_, this)
+ ];
+ this.tileLoadFunction_(this, this.src_);
+ }
+};
+
+
+/**
+ * Discards event handlers which listen for load completion or errors.
+ *
+ * @private
+ */
+ol.ImageTile.prototype.unlistenImage_ = function() {
+ goog.asserts.assert(this.imageListenerKeys_,
+ 'this.imageListenerKeys_ should not be null');
+ this.imageListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.imageListenerKeys_ = null;
+};
+
+// FIXME should handle all geo-referenced data, not just vector data
+
+goog.provide('ol.interaction.DragAndDrop');
+goog.provide('ol.interaction.DragAndDropEvent');
+
+goog.require('goog.asserts');
+goog.require('ol.functions');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.proj');
+
+
+/**
+ * @classdesc
+ * Handles input of vector data by drag and drop.
+ *
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @fires ol.interaction.DragAndDropEvent
+ * @param {olx.interaction.DragAndDropOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragAndDrop = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.DragAndDrop.handleEvent
+ });
+
+ /**
+ * @private
+ * @type {Array.<function(new: ol.format.Feature)>}
+ */
+ this.formatConstructors_ = options.formatConstructors ?
+ options.formatConstructors : [];
+
+ /**
+ * @private
+ * @type {ol.proj.Projection}
+ */
+ this.projection_ = options.projection ?
+ ol.proj.get(options.projection) : null;
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.dropListenKeys_ = null;
+
+ /**
+ * @private
+ * @type {Element}
+ */
+ this.target = options.target ? options.target : null;
+
+};
+ol.inherits(ol.interaction.DragAndDrop, ol.interaction.Interaction);
+
+
+/**
+ * @param {Event} event Event.
+ * @this {ol.interaction.DragAndDrop}
+ * @private
+ */
+ol.interaction.DragAndDrop.handleDrop_ = function(event) {
+ var files = event.dataTransfer.files;
+ var i, ii, file;
+ for (i = 0, ii = files.length; i < ii; ++i) {
+ file = files.item(i);
+ var reader = new FileReader();
+ reader.addEventListener(ol.events.EventType.LOAD,
+ this.handleResult_.bind(this, file));
+ reader.readAsText(file);
+ }
+};
+
+
+/**
+ * @param {Event} event Event.
+ * @private
+ */
+ol.interaction.DragAndDrop.handleStop_ = function(event) {
+ event.stopPropagation();
+ event.preventDefault();
+ event.dataTransfer.dropEffect = 'copy';
+};
+
+
+/**
+ * @param {File} file File.
+ * @param {Event} event Load event.
+ * @private
+ */
+ol.interaction.DragAndDrop.prototype.handleResult_ = function(file, event) {
+ var result = event.target.result;
+ var map = this.getMap();
+ goog.asserts.assert(map, 'map must be set');
+ var projection = this.projection_;
+ if (!projection) {
+ var view = map.getView();
+ goog.asserts.assert(view, 'map must have view');
+ projection = view.getProjection();
+ goog.asserts.assert(projection !== undefined,
+ 'projection should be defined');
+ }
+ var formatConstructors = this.formatConstructors_;
+ var features = [];
+ var i, ii;
+ for (i = 0, ii = formatConstructors.length; i < ii; ++i) {
+ var formatConstructor = formatConstructors[i];
+ var format = new formatConstructor();
+ features = this.tryReadFeatures_(format, result, {
+ featureProjection: projection
+ });
+ if (features && features.length > 0) {
+ break;
+ }
+ }
+ this.dispatchEvent(
+ new ol.interaction.DragAndDropEvent(
+ ol.interaction.DragAndDropEventType.ADD_FEATURES, this, file,
+ features, projection));
+};
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} unconditionally and
+ * neither prevents the browser default nor stops event propagation.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.DragAndDrop}
+ * @api
+ */
+ol.interaction.DragAndDrop.handleEvent = ol.functions.TRUE;
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragAndDrop.prototype.setMap = function(map) {
+ if (this.dropListenKeys_) {
+ this.dropListenKeys_.forEach(ol.events.unlistenByKey);
+ this.dropListenKeys_ = null;
+ }
+ ol.interaction.Interaction.prototype.setMap.call(this, map);
+ if (map) {
+ var dropArea = this.target ? this.target : map.getViewport();
+ this.dropListenKeys_ = [
+ ol.events.listen(dropArea, ol.events.EventType.DROP,
+ ol.interaction.DragAndDrop.handleDrop_, this),
+ ol.events.listen(dropArea, ol.events.EventType.DRAGENTER,
+ ol.interaction.DragAndDrop.handleStop_, this),
+ ol.events.listen(dropArea, ol.events.EventType.DRAGOVER,
+ ol.interaction.DragAndDrop.handleStop_, this),
+ ol.events.listen(dropArea, ol.events.EventType.DROP,
+ ol.interaction.DragAndDrop.handleStop_, this)
+ ];
+ }
+};
+
+
+/**
+ * @param {ol.format.Feature} format Format.
+ * @param {string} text Text.
+ * @param {olx.format.ReadOptions} options Read options.
+ * @private
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.interaction.DragAndDrop.prototype.tryReadFeatures_ = function(format, text, options) {
+ try {
+ return format.readFeatures(text, options);
+ } catch (e) {
+ return null;
+ }
+};
+
+
+/**
+ * @enum {string}
+ */
+ol.interaction.DragAndDropEventType = {
+ /**
+ * Triggered when features are added
+ * @event ol.interaction.DragAndDropEvent#addfeatures
+ * @api stable
+ */
+ ADD_FEATURES: 'addfeatures'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.DragAndDrop} instances are instances
+ * of this type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.interaction.DragAndDropEvent}
+ * @param {ol.interaction.DragAndDropEventType} type Type.
+ * @param {Object} target Target.
+ * @param {File} file File.
+ * @param {Array.<ol.Feature>=} opt_features Features.
+ * @param {ol.proj.Projection=} opt_projection Projection.
+ */
+ol.interaction.DragAndDropEvent = function(type, target, file, opt_features, opt_projection) {
+
+ ol.events.Event.call(this, type, target);
+
+ /**
+ * The features parsed from dropped data.
+ * @type {Array.<ol.Feature>|undefined}
+ * @api stable
+ */
+ this.features = opt_features;
+
+ /**
+ * The dropped file.
+ * @type {File}
+ * @api stable
+ */
+ this.file = file;
+
+ /**
+ * The feature projection.
+ * @type {ol.proj.Projection|undefined}
+ * @api
+ */
+ this.projection = opt_projection;
+
+};
+ol.inherits(ol.interaction.DragAndDropEvent, ol.events.Event);
+
+goog.provide('ol.interaction.DragRotateAndZoom');
+
+goog.require('ol');
+goog.require('ol.ViewHint');
+goog.require('ol.events.condition');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @classdesc
+ * Allows the user to zoom and rotate the map by clicking and dragging
+ * on the map. By default, this interaction is limited to when the shift
+ * key is held down.
+ *
+ * This interaction is only supported for mouse devices.
+ *
+ * And this interaction is not included in the default interactions.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.DragRotateAndZoomOptions=} opt_options Options.
+ * @api stable
+ */
+ol.interaction.DragRotateAndZoom = function(opt_options) {
+
+ var options = opt_options ? opt_options : {};
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.DragRotateAndZoom.handleDownEvent_,
+ handleDragEvent: ol.interaction.DragRotateAndZoom.handleDragEvent_,
+ handleUpEvent: ol.interaction.DragRotateAndZoom.handleUpEvent_
+ });
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.shiftKeyOnly;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.lastAngle_ = undefined;
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.lastMagnitude_ = undefined;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.lastScaleDelta_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.duration_ = options.duration !== undefined ? options.duration : 400;
+
+};
+ol.inherits(ol.interaction.DragRotateAndZoom, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {ol.interaction.DragRotateAndZoom}
+ * @private
+ */
+ol.interaction.DragRotateAndZoom.handleDragEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return;
+ }
+
+ var map = mapBrowserEvent.map;
+ var size = map.getSize();
+ var offset = mapBrowserEvent.pixel;
+ var deltaX = offset[0] - size[0] / 2;
+ var deltaY = size[1] / 2 - offset[1];
+ var theta = Math.atan2(deltaY, deltaX);
+ var magnitude = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
+ var view = map.getView();
+ map.render();
+ if (this.lastAngle_ !== undefined) {
+ var angleDelta = theta - this.lastAngle_;
+ ol.interaction.Interaction.rotateWithoutConstraints(
+ map, view, view.getRotation() - angleDelta);
+ }
+ this.lastAngle_ = theta;
+ if (this.lastMagnitude_ !== undefined) {
+ var resolution = this.lastMagnitude_ * (view.getResolution() / magnitude);
+ ol.interaction.Interaction.zoomWithoutConstraints(map, view, resolution);
+ }
+ if (this.lastMagnitude_ !== undefined) {
+ this.lastScaleDelta_ = this.lastMagnitude_ / magnitude;
+ }
+ this.lastMagnitude_ = magnitude;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.DragRotateAndZoom}
+ * @private
+ */
+ol.interaction.DragRotateAndZoom.handleUpEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return true;
+ }
+
+ var map = mapBrowserEvent.map;
+ var view = map.getView();
+ view.setHint(ol.ViewHint.INTERACTING, -1);
+ var direction = this.lastScaleDelta_ - 1;
+ ol.interaction.Interaction.rotate(map, view, view.getRotation());
+ ol.interaction.Interaction.zoom(map, view, view.getResolution(),
+ undefined, this.duration_, direction);
+ this.lastScaleDelta_ = 0;
+ return false;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.DragRotateAndZoom}
+ * @private
+ */
+ol.interaction.DragRotateAndZoom.handleDownEvent_ = function(mapBrowserEvent) {
+ if (!ol.events.condition.mouseOnly(mapBrowserEvent)) {
+ return false;
+ }
+
+ if (this.condition_(mapBrowserEvent)) {
+ mapBrowserEvent.map.getView().setHint(ol.ViewHint.INTERACTING, 1);
+ this.lastAngle_ = undefined;
+ this.lastMagnitude_ = undefined;
+ return true;
+ } else {
+ return false;
+ }
+};
+
+goog.provide('ol.interaction.Draw');
+goog.provide('ol.interaction.DrawEvent');
+goog.provide('ol.interaction.DrawEventType');
+goog.provide('ol.interaction.DrawMode');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.Collection');
+goog.require('ol.Feature');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.Object');
+goog.require('ol.coordinate');
+goog.require('ol.functions');
+goog.require('ol.events.condition');
+goog.require('ol.geom.Circle');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.interaction.InteractionProperty');
+goog.require('ol.interaction.Pointer');
+goog.require('ol.layer.Vector');
+goog.require('ol.source.Vector');
+
+
+/**
+ * @enum {string}
+ */
+ol.interaction.DrawEventType = {
+ /**
+ * Triggered upon feature draw start
+ * @event ol.interaction.DrawEvent#drawstart
+ * @api stable
+ */
+ DRAWSTART: 'drawstart',
+ /**
+ * Triggered upon feature draw end
+ * @event ol.interaction.DrawEvent#drawend
+ * @api stable
+ */
+ DRAWEND: 'drawend'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.Draw} instances are instances of
+ * this type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.DrawEvent}
+ * @param {ol.interaction.DrawEventType} type Type.
+ * @param {ol.Feature} feature The feature drawn.
+ */
+ol.interaction.DrawEvent = function(type, feature) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The feature being drawn.
+ * @type {ol.Feature}
+ * @api stable
+ */
+ this.feature = feature;
+
+};
+ol.inherits(ol.interaction.DrawEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Interaction for drawing feature geometries.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @fires ol.interaction.DrawEvent
+ * @param {olx.interaction.DrawOptions} options Options.
+ * @api stable
+ */
+ol.interaction.Draw = function(options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.Draw.handleDownEvent_,
+ handleEvent: ol.interaction.Draw.handleEvent,
+ handleUpEvent: ol.interaction.Draw.handleUpEvent_
+ });
+
+ /**
+ * @type {ol.Pixel}
+ * @private
+ */
+ this.downPx_ = null;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.freehand_ = false;
+
+ /**
+ * Target source for drawn features.
+ * @type {ol.source.Vector}
+ * @private
+ */
+ this.source_ = options.source ? options.source : null;
+
+ /**
+ * Target collection for drawn features.
+ * @type {ol.Collection.<ol.Feature>}
+ * @private
+ */
+ this.features_ = options.features ? options.features : null;
+
+ /**
+ * Pixel distance for snapping.
+ * @type {number}
+ * @private
+ */
+ this.snapTolerance_ = options.snapTolerance ? options.snapTolerance : 12;
+
+ /**
+ * Geometry type.
+ * @type {ol.geom.GeometryType}
+ * @private
+ */
+ this.type_ = options.type;
+
+ /**
+ * Drawing mode (derived from geometry type.
+ * @type {ol.interaction.DrawMode}
+ * @private
+ */
+ this.mode_ = ol.interaction.Draw.getMode_(this.type_);
+
+ /**
+ * The number of points that must be drawn before a polygon ring or line
+ * string can be finished. The default is 3 for polygon rings and 2 for
+ * line strings.
+ * @type {number}
+ * @private
+ */
+ this.minPoints_ = options.minPoints ?
+ options.minPoints :
+ (this.mode_ === ol.interaction.DrawMode.POLYGON ? 3 : 2);
+
+ /**
+ * The number of points that can be drawn before a polygon ring or line string
+ * is finished. The default is no restriction.
+ * @type {number}
+ * @private
+ */
+ this.maxPoints_ = options.maxPoints ? options.maxPoints : Infinity;
+
+ /**
+ * A function to decide if a potential finish coordinate is permissable
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.finishCondition_ = options.finishCondition ? options.finishCondition : ol.functions.TRUE;
+
+ var geometryFunction = options.geometryFunction;
+ if (!geometryFunction) {
+ if (this.type_ === ol.geom.GeometryType.CIRCLE) {
+ /**
+ * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+ * The coordinates.
+ * @param {ol.geom.SimpleGeometry=} opt_geometry Optional geometry.
+ * @return {ol.geom.SimpleGeometry} A geometry.
+ */
+ geometryFunction = function(coordinates, opt_geometry) {
+ var circle = opt_geometry ? opt_geometry :
+ new ol.geom.Circle([NaN, NaN]);
+ goog.asserts.assertInstanceof(circle, ol.geom.Circle,
+ 'geometry must be an ol.geom.Circle');
+ var squaredLength = ol.coordinate.squaredDistance(
+ coordinates[0], coordinates[1]);
+ circle.setCenterAndRadius(coordinates[0], Math.sqrt(squaredLength));
+ return circle;
+ };
+ } else {
+ var Constructor;
+ var mode = this.mode_;
+ if (mode === ol.interaction.DrawMode.POINT) {
+ Constructor = ol.geom.Point;
+ } else if (mode === ol.interaction.DrawMode.LINE_STRING) {
+ Constructor = ol.geom.LineString;
+ } else if (mode === ol.interaction.DrawMode.POLYGON) {
+ Constructor = ol.geom.Polygon;
+ }
+ /**
+ * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+ * The coordinates.
+ * @param {ol.geom.SimpleGeometry=} opt_geometry Optional geometry.
+ * @return {ol.geom.SimpleGeometry} A geometry.
+ */
+ geometryFunction = function(coordinates, opt_geometry) {
+ var geometry = opt_geometry;
+ if (geometry) {
+ geometry.setCoordinates(coordinates);
+ } else {
+ geometry = new Constructor(coordinates);
+ }
+ return geometry;
+ };
+ }
+ }
+
+ /**
+ * @type {ol.DrawGeometryFunctionType}
+ * @private
+ */
+ this.geometryFunction_ = geometryFunction;
+
+ /**
+ * Finish coordinate for the feature (first point for polygons, last point for
+ * linestrings).
+ * @type {ol.Coordinate}
+ * @private
+ */
+ this.finishCoordinate_ = null;
+
+ /**
+ * Sketch feature.
+ * @type {ol.Feature}
+ * @private
+ */
+ this.sketchFeature_ = null;
+
+ /**
+ * Sketch point.
+ * @type {ol.Feature}
+ * @private
+ */
+ this.sketchPoint_ = null;
+
+ /**
+ * Sketch coordinates. Used when drawing a line or polygon.
+ * @type {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>}
+ * @private
+ */
+ this.sketchCoords_ = null;
+
+ /**
+ * Sketch line. Used when drawing polygon.
+ * @type {ol.Feature}
+ * @private
+ */
+ this.sketchLine_ = null;
+
+ /**
+ * Sketch line coordinates. Used when drawing a polygon or circle.
+ * @type {Array.<ol.Coordinate>}
+ * @private
+ */
+ this.sketchLineCoords_ = null;
+
+ /**
+ * Squared tolerance for handling up events. If the squared distance
+ * between a down and up event is greater than this tolerance, up events
+ * will not be handled.
+ * @type {number}
+ * @private
+ */
+ this.squaredClickTolerance_ = options.clickTolerance ?
+ options.clickTolerance * options.clickTolerance : 36;
+
+ /**
+ * Draw overlay where our sketch features are drawn.
+ * @type {ol.layer.Vector}
+ * @private
+ */
+ this.overlay_ = new ol.layer.Vector({
+ source: new ol.source.Vector({
+ useSpatialIndex: false,
+ wrapX: options.wrapX ? options.wrapX : false
+ }),
+ style: options.style ? options.style :
+ ol.interaction.Draw.getDefaultStyleFunction()
+ });
+
+ /**
+ * Name of the geometry attribute for newly created features.
+ * @type {string|undefined}
+ * @private
+ */
+ this.geometryName_ = options.geometryName;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.noModifierKeys;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.freehandCondition_ = options.freehandCondition ?
+ options.freehandCondition : ol.events.condition.shiftKeyOnly;
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.interaction.InteractionProperty.ACTIVE),
+ this.updateState_, this);
+
+};
+ol.inherits(ol.interaction.Draw, ol.interaction.Pointer);
+
+
+/**
+ * @return {ol.StyleFunction} Styles.
+ */
+ol.interaction.Draw.getDefaultStyleFunction = function() {
+ var styles = ol.style.createDefaultEditingStyles();
+ return function(feature, resolution) {
+ return styles[feature.getGeometry().getType()];
+ };
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.Draw.prototype.setMap = function(map) {
+ ol.interaction.Pointer.prototype.setMap.call(this, map);
+ this.updateState_();
+};
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} and may actually
+ * draw or finish the drawing.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.Draw}
+ * @api
+ */
+ol.interaction.Draw.handleEvent = function(mapBrowserEvent) {
+ if ((this.mode_ === ol.interaction.DrawMode.LINE_STRING ||
+ this.mode_ === ol.interaction.DrawMode.POLYGON) &&
+ this.freehandCondition_(mapBrowserEvent)) {
+ this.freehand_ = true;
+ }
+ var pass = !this.freehand_;
+ if (this.freehand_ &&
+ mapBrowserEvent.type === ol.MapBrowserEvent.EventType.POINTERDRAG) {
+ this.addToDrawing_(mapBrowserEvent);
+ pass = false;
+ } else if (mapBrowserEvent.type ===
+ ol.MapBrowserEvent.EventType.POINTERMOVE) {
+ pass = this.handlePointerMove_(mapBrowserEvent);
+ } else if (mapBrowserEvent.type === ol.MapBrowserEvent.EventType.DBLCLICK) {
+ pass = false;
+ }
+ return ol.interaction.Pointer.handleEvent.call(this, mapBrowserEvent) && pass;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} event Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.Draw}
+ * @private
+ */
+ol.interaction.Draw.handleDownEvent_ = function(event) {
+ if (this.condition_(event)) {
+ this.downPx_ = event.pixel;
+ return true;
+ } else if (this.freehand_) {
+ this.downPx_ = event.pixel;
+ if (!this.finishCoordinate_) {
+ this.startDrawing_(event);
+ }
+ return true;
+ } else {
+ return false;
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} event Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.Draw}
+ * @private
+ */
+ol.interaction.Draw.handleUpEvent_ = function(event) {
+ this.freehand_ = false;
+ var downPx = this.downPx_;
+ var clickPx = event.pixel;
+ var dx = downPx[0] - clickPx[0];
+ var dy = downPx[1] - clickPx[1];
+ var squaredDistance = dx * dx + dy * dy;
+ var pass = true;
+ if (squaredDistance <= this.squaredClickTolerance_) {
+ this.handlePointerMove_(event);
+ if (!this.finishCoordinate_) {
+ this.startDrawing_(event);
+ if (this.mode_ === ol.interaction.DrawMode.POINT) {
+ this.finishDrawing();
+ }
+ } else if (this.mode_ === ol.interaction.DrawMode.CIRCLE) {
+ this.finishDrawing();
+ } else if (this.atFinish_(event)) {
+ if (this.finishCondition_(event)) {
+ this.finishDrawing();
+ }
+ } else {
+ this.addToDrawing_(event);
+ }
+ pass = false;
+ }
+ return pass;
+};
+
+
+/**
+ * Handle move events.
+ * @param {ol.MapBrowserEvent} event A move event.
+ * @return {boolean} Pass the event to other interactions.
+ * @private
+ */
+ol.interaction.Draw.prototype.handlePointerMove_ = function(event) {
+ if (this.finishCoordinate_) {
+ this.modifyDrawing_(event);
+ } else {
+ this.createOrUpdateSketchPoint_(event);
+ }
+ return true;
+};
+
+
+/**
+ * Determine if an event is within the snapping tolerance of the start coord.
+ * @param {ol.MapBrowserEvent} event Event.
+ * @return {boolean} The event is within the snapping tolerance of the start.
+ * @private
+ */
+ol.interaction.Draw.prototype.atFinish_ = function(event) {
+ var at = false;
+ if (this.sketchFeature_) {
+ var potentiallyDone = false;
+ var potentiallyFinishCoordinates = [this.finishCoordinate_];
+ if (this.mode_ === ol.interaction.DrawMode.LINE_STRING) {
+ potentiallyDone = this.sketchCoords_.length > this.minPoints_;
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ potentiallyDone = this.sketchCoords_[0].length >
+ this.minPoints_;
+ potentiallyFinishCoordinates = [this.sketchCoords_[0][0],
+ this.sketchCoords_[0][this.sketchCoords_[0].length - 2]];
+ }
+ if (potentiallyDone) {
+ var map = event.map;
+ for (var i = 0, ii = potentiallyFinishCoordinates.length; i < ii; i++) {
+ var finishCoordinate = potentiallyFinishCoordinates[i];
+ var finishPixel = map.getPixelFromCoordinate(finishCoordinate);
+ var pixel = event.pixel;
+ var dx = pixel[0] - finishPixel[0];
+ var dy = pixel[1] - finishPixel[1];
+ var freehand = this.freehand_ && this.freehandCondition_(event);
+ var snapTolerance = freehand ? 1 : this.snapTolerance_;
+ at = Math.sqrt(dx * dx + dy * dy) <= snapTolerance;
+ if (at) {
+ this.finishCoordinate_ = finishCoordinate;
+ break;
+ }
+ }
+ }
+ }
+ return at;
+};
+
+
+/**
+ * @param {ol.MapBrowserEvent} event Event.
+ * @private
+ */
+ol.interaction.Draw.prototype.createOrUpdateSketchPoint_ = function(event) {
+ var coordinates = event.coordinate.slice();
+ if (!this.sketchPoint_) {
+ this.sketchPoint_ = new ol.Feature(new ol.geom.Point(coordinates));
+ this.updateSketchFeatures_();
+ } else {
+ var sketchPointGeom = this.sketchPoint_.getGeometry();
+ goog.asserts.assertInstanceof(sketchPointGeom, ol.geom.Point,
+ 'sketchPointGeom should be an ol.geom.Point');
+ sketchPointGeom.setCoordinates(coordinates);
+ }
+};
+
+
+/**
+ * Start the drawing.
+ * @param {ol.MapBrowserEvent} event Event.
+ * @private
+ */
+ol.interaction.Draw.prototype.startDrawing_ = function(event) {
+ var start = event.coordinate;
+ this.finishCoordinate_ = start;
+ if (this.mode_ === ol.interaction.DrawMode.POINT) {
+ this.sketchCoords_ = start.slice();
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ this.sketchCoords_ = [[start.slice(), start.slice()]];
+ this.sketchLineCoords_ = this.sketchCoords_[0];
+ } else {
+ this.sketchCoords_ = [start.slice(), start.slice()];
+ if (this.mode_ === ol.interaction.DrawMode.CIRCLE) {
+ this.sketchLineCoords_ = this.sketchCoords_;
+ }
+ }
+ if (this.sketchLineCoords_) {
+ this.sketchLine_ = new ol.Feature(
+ new ol.geom.LineString(this.sketchLineCoords_));
+ }
+ var geometry = this.geometryFunction_(this.sketchCoords_);
+ goog.asserts.assert(geometry !== undefined, 'geometry should be defined');
+ this.sketchFeature_ = new ol.Feature();
+ if (this.geometryName_) {
+ this.sketchFeature_.setGeometryName(this.geometryName_);
+ }
+ this.sketchFeature_.setGeometry(geometry);
+ this.updateSketchFeatures_();
+ this.dispatchEvent(new ol.interaction.DrawEvent(
+ ol.interaction.DrawEventType.DRAWSTART, this.sketchFeature_));
+};
+
+
+/**
+ * Modify the drawing.
+ * @param {ol.MapBrowserEvent} event Event.
+ * @private
+ */
+ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
+ var coordinate = event.coordinate;
+ var geometry = this.sketchFeature_.getGeometry();
+ goog.asserts.assertInstanceof(geometry, ol.geom.SimpleGeometry,
+ 'geometry should be ol.geom.SimpleGeometry or subclass');
+ var coordinates, last;
+ if (this.mode_ === ol.interaction.DrawMode.POINT) {
+ last = this.sketchCoords_;
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ coordinates = this.sketchCoords_[0];
+ last = coordinates[coordinates.length - 1];
+ if (this.atFinish_(event)) {
+ // snap to finish
+ coordinate = this.finishCoordinate_.slice();
+ }
+ } else {
+ coordinates = this.sketchCoords_;
+ last = coordinates[coordinates.length - 1];
+ }
+ last[0] = coordinate[0];
+ last[1] = coordinate[1];
+ goog.asserts.assert(this.sketchCoords_, 'sketchCoords_ expected');
+ this.geometryFunction_(this.sketchCoords_, geometry);
+ if (this.sketchPoint_) {
+ var sketchPointGeom = this.sketchPoint_.getGeometry();
+ goog.asserts.assertInstanceof(sketchPointGeom, ol.geom.Point,
+ 'sketchPointGeom should be an ol.geom.Point');
+ sketchPointGeom.setCoordinates(coordinate);
+ }
+ var sketchLineGeom;
+ if (geometry instanceof ol.geom.Polygon &&
+ this.mode_ !== ol.interaction.DrawMode.POLYGON) {
+ if (!this.sketchLine_) {
+ this.sketchLine_ = new ol.Feature(new ol.geom.LineString(null));
+ }
+ var ring = geometry.getLinearRing(0);
+ sketchLineGeom = this.sketchLine_.getGeometry();
+ goog.asserts.assertInstanceof(sketchLineGeom, ol.geom.LineString,
+ 'sketchLineGeom must be an ol.geom.LineString');
+ sketchLineGeom.setFlatCoordinates(
+ ring.getLayout(), ring.getFlatCoordinates());
+ } else if (this.sketchLineCoords_) {
+ sketchLineGeom = this.sketchLine_.getGeometry();
+ goog.asserts.assertInstanceof(sketchLineGeom, ol.geom.LineString,
+ 'sketchLineGeom must be an ol.geom.LineString');
+ sketchLineGeom.setCoordinates(this.sketchLineCoords_);
+ }
+ this.updateSketchFeatures_();
+};
+
+
+/**
+ * Add a new coordinate to the drawing.
+ * @param {ol.MapBrowserEvent} event Event.
+ * @private
+ */
+ol.interaction.Draw.prototype.addToDrawing_ = function(event) {
+ var coordinate = event.coordinate;
+ var geometry = this.sketchFeature_.getGeometry();
+ goog.asserts.assertInstanceof(geometry, ol.geom.SimpleGeometry,
+ 'geometry must be an ol.geom.SimpleGeometry');
+ var done;
+ var coordinates;
+ if (this.mode_ === ol.interaction.DrawMode.LINE_STRING) {
+ this.finishCoordinate_ = coordinate.slice();
+ coordinates = this.sketchCoords_;
+ coordinates.push(coordinate.slice());
+ done = coordinates.length > this.maxPoints_;
+ this.geometryFunction_(coordinates, geometry);
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ coordinates = this.sketchCoords_[0];
+ coordinates.push(coordinate.slice());
+ done = coordinates.length > this.maxPoints_;
+ if (done) {
+ this.finishCoordinate_ = coordinates[0];
+ }
+ this.geometryFunction_(this.sketchCoords_, geometry);
+ }
+ this.updateSketchFeatures_();
+ if (done) {
+ this.finishDrawing();
+ }
+};
+
+
+/**
+ * Remove last point of the feature currently being drawn.
+ * @api
+ */
+ol.interaction.Draw.prototype.removeLastPoint = function() {
+ var geometry = this.sketchFeature_.getGeometry();
+ goog.asserts.assertInstanceof(geometry, ol.geom.SimpleGeometry,
+ 'geometry must be an ol.geom.SimpleGeometry');
+ var coordinates, sketchLineGeom;
+ if (this.mode_ === ol.interaction.DrawMode.LINE_STRING) {
+ coordinates = this.sketchCoords_;
+ coordinates.splice(-2, 1);
+ this.geometryFunction_(coordinates, geometry);
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ coordinates = this.sketchCoords_[0];
+ coordinates.splice(-2, 1);
+ sketchLineGeom = this.sketchLine_.getGeometry();
+ goog.asserts.assertInstanceof(sketchLineGeom, ol.geom.LineString,
+ 'sketchLineGeom must be an ol.geom.LineString');
+ sketchLineGeom.setCoordinates(coordinates);
+ this.geometryFunction_(this.sketchCoords_, geometry);
+ }
+
+ if (coordinates.length === 0) {
+ this.finishCoordinate_ = null;
+ }
+
+ this.updateSketchFeatures_();
+};
+
+
+/**
+ * Stop drawing and add the sketch feature to the target layer.
+ * The {@link ol.interaction.DrawEventType.DRAWEND} event is dispatched before
+ * inserting the feature.
+ * @api
+ */
+ol.interaction.Draw.prototype.finishDrawing = function() {
+ var sketchFeature = this.abortDrawing_();
+ goog.asserts.assert(sketchFeature, 'sketchFeature expected to be truthy');
+ var coordinates = this.sketchCoords_;
+ var geometry = sketchFeature.getGeometry();
+ goog.asserts.assertInstanceof(geometry, ol.geom.SimpleGeometry,
+ 'geometry must be an ol.geom.SimpleGeometry');
+ if (this.mode_ === ol.interaction.DrawMode.LINE_STRING) {
+ // remove the redundant last point
+ coordinates.pop();
+ this.geometryFunction_(coordinates, geometry);
+ } else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
+ // When we finish drawing a polygon on the last point,
+ // the last coordinate is duplicated as for LineString
+ // we force the replacement by the first point
+ coordinates[0].pop();
+ coordinates[0].push(coordinates[0][0]);
+ this.geometryFunction_(coordinates, geometry);
+ }
+
+ // cast multi-part geometries
+ if (this.type_ === ol.geom.GeometryType.MULTI_POINT) {
+ sketchFeature.setGeometry(new ol.geom.MultiPoint([coordinates]));
+ } else if (this.type_ === ol.geom.GeometryType.MULTI_LINE_STRING) {
+ sketchFeature.setGeometry(new ol.geom.MultiLineString([coordinates]));
+ } else if (this.type_ === ol.geom.GeometryType.MULTI_POLYGON) {
+ sketchFeature.setGeometry(new ol.geom.MultiPolygon([coordinates]));
+ }
+
+ // First dispatch event to allow full set up of feature
+ this.dispatchEvent(new ol.interaction.DrawEvent(
+ ol.interaction.DrawEventType.DRAWEND, sketchFeature));
+
+ // Then insert feature
+ if (this.features_) {
+ this.features_.push(sketchFeature);
+ }
+ if (this.source_) {
+ this.source_.addFeature(sketchFeature);
+ }
+};
+
+
+/**
+ * Stop drawing without adding the sketch feature to the target layer.
+ * @return {ol.Feature} The sketch feature (or null if none).
+ * @private
+ */
+ol.interaction.Draw.prototype.abortDrawing_ = function() {
+ this.finishCoordinate_ = null;
+ var sketchFeature = this.sketchFeature_;
+ if (sketchFeature) {
+ this.sketchFeature_ = null;
+ this.sketchPoint_ = null;
+ this.sketchLine_ = null;
+ this.overlay_.getSource().clear(true);
+ }
+ return sketchFeature;
+};
+
+
+/**
+ * Extend an existing geometry by adding additional points. This only works
+ * on features with `LineString` geometries, where the interaction will
+ * extend lines by adding points to the end of the coordinates array.
+ * @param {!ol.Feature} feature Feature to be extended.
+ * @api
+ */
+ol.interaction.Draw.prototype.extend = function(feature) {
+ var geometry = feature.getGeometry();
+ goog.asserts.assert(this.mode_ == ol.interaction.DrawMode.LINE_STRING,
+ 'interaction mode must be "line"');
+ goog.asserts.assert(geometry, 'feature must have a geometry');
+ goog.asserts.assert(geometry.getType() == ol.geom.GeometryType.LINE_STRING,
+ 'feature geometry must be a line string');
+ var lineString = /** @type {ol.geom.LineString} */ (geometry);
+ this.sketchFeature_ = feature;
+ this.sketchCoords_ = lineString.getCoordinates();
+ var last = this.sketchCoords_[this.sketchCoords_.length - 1];
+ this.finishCoordinate_ = last.slice();
+ this.sketchCoords_.push(last.slice());
+ this.updateSketchFeatures_();
+ this.dispatchEvent(new ol.interaction.DrawEvent(
+ ol.interaction.DrawEventType.DRAWSTART, this.sketchFeature_));
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.Draw.prototype.shouldStopEvent = ol.functions.FALSE;
+
+
+/**
+ * Redraw the sketch features.
+ * @private
+ */
+ol.interaction.Draw.prototype.updateSketchFeatures_ = function() {
+ var sketchFeatures = [];
+ if (this.sketchFeature_) {
+ sketchFeatures.push(this.sketchFeature_);
+ }
+ if (this.sketchLine_) {
+ sketchFeatures.push(this.sketchLine_);
+ }
+ if (this.sketchPoint_) {
+ sketchFeatures.push(this.sketchPoint_);
+ }
+ var overlaySource = this.overlay_.getSource();
+ overlaySource.clear(true);
+ overlaySource.addFeatures(sketchFeatures);
+};
+
+
+/**
+ * @private
+ */
+ol.interaction.Draw.prototype.updateState_ = function() {
+ var map = this.getMap();
+ var active = this.getActive();
+ if (!map || !active) {
+ this.abortDrawing_();
+ }
+ this.overlay_.setMap(active ? map : null);
+};
+
+
+/**
+ * Create a `geometryFunction` for `mode: 'Circle'` that will create a regular
+ * polygon with a user specified number of sides and start angle instead of an
+ * `ol.geom.Circle` geometry.
+ * @param {number=} opt_sides Number of sides of the regular polygon. Default is
+ * 32.
+ * @param {number=} opt_angle Angle of the first point in radians. 0 means East.
+ * Default is the angle defined by the heading from the center of the
+ * regular polygon to the current pointer position.
+ * @return {ol.DrawGeometryFunctionType} Function that draws a
+ * polygon.
+ * @api
+ */
+ol.interaction.Draw.createRegularPolygon = function(opt_sides, opt_angle) {
+ return (
+ /**
+ * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+ * @param {ol.geom.SimpleGeometry=} opt_geometry
+ * @return {ol.geom.SimpleGeometry}
+ */
+ function(coordinates, opt_geometry) {
+ var center = coordinates[0];
+ var end = coordinates[1];
+ var radius = Math.sqrt(
+ ol.coordinate.squaredDistance(center, end));
+ var geometry = opt_geometry ? opt_geometry :
+ ol.geom.Polygon.fromCircle(new ol.geom.Circle(center), opt_sides);
+ goog.asserts.assertInstanceof(geometry, ol.geom.Polygon,
+ 'geometry must be a polygon');
+ var angle = opt_angle ? opt_angle :
+ Math.atan((end[1] - center[1]) / (end[0] - center[0]));
+ ol.geom.Polygon.makeRegular(geometry, center, radius, angle);
+ return geometry;
+ }
+ );
+};
+
+
+/**
+ * Get the drawing mode. The mode for mult-part geometries is the same as for
+ * their single-part cousins.
+ * @param {ol.geom.GeometryType} type Geometry type.
+ * @return {ol.interaction.DrawMode} Drawing mode.
+ * @private
+ */
+ol.interaction.Draw.getMode_ = function(type) {
+ var mode;
+ if (type === ol.geom.GeometryType.POINT ||
+ type === ol.geom.GeometryType.MULTI_POINT) {
+ mode = ol.interaction.DrawMode.POINT;
+ } else if (type === ol.geom.GeometryType.LINE_STRING ||
+ type === ol.geom.GeometryType.MULTI_LINE_STRING) {
+ mode = ol.interaction.DrawMode.LINE_STRING;
+ } else if (type === ol.geom.GeometryType.POLYGON ||
+ type === ol.geom.GeometryType.MULTI_POLYGON) {
+ mode = ol.interaction.DrawMode.POLYGON;
+ } else if (type === ol.geom.GeometryType.CIRCLE) {
+ mode = ol.interaction.DrawMode.CIRCLE;
+ }
+ goog.asserts.assert(mode !== undefined, 'mode should be defined');
+ return mode;
+};
+
+
+/**
+ * Draw mode. This collapses multi-part geometry types with their single-part
+ * cousins.
+ * @enum {string}
+ */
+ol.interaction.DrawMode = {
+ POINT: 'Point',
+ LINE_STRING: 'LineString',
+ POLYGON: 'Polygon',
+ CIRCLE: 'Circle'
+};
+
+goog.provide('ol.interaction.Modify');
+goog.provide('ol.interaction.ModifyEvent');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEventType');
+goog.require('ol.Feature');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.MapBrowserPointerEvent');
+goog.require('ol.ViewHint');
+goog.require('ol.array');
+goog.require('ol.coordinate');
+goog.require('ol.events.condition');
+goog.require('ol.extent');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.interaction.Pointer');
+goog.require('ol.layer.Vector');
+goog.require('ol.source.Vector');
+goog.require('ol.structs.RBush');
+
+
+/**
+ * @enum {string}
+ */
+ol.ModifyEventType = {
+ /**
+ * Triggered upon feature modification start
+ * @event ol.interaction.ModifyEvent#modifystart
+ * @api
+ */
+ MODIFYSTART: 'modifystart',
+ /**
+ * Triggered upon feature modification end
+ * @event ol.interaction.ModifyEvent#modifyend
+ * @api
+ */
+ MODIFYEND: 'modifyend'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.Modify} instances are instances of
+ * this type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.ModifyEvent}
+ * @param {ol.ModifyEventType} type Type.
+ * @param {ol.Collection.<ol.Feature>} features The features modified.
+ * @param {ol.MapBrowserPointerEvent} mapBrowserPointerEvent Associated
+ * {@link ol.MapBrowserPointerEvent}.
+ */
+ol.interaction.ModifyEvent = function(type, features, mapBrowserPointerEvent) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The features being modified.
+ * @type {ol.Collection.<ol.Feature>}
+ * @api
+ */
+ this.features = features;
+
+ /**
+ * Associated {@link ol.MapBrowserEvent}.
+ * @type {ol.MapBrowserEvent}
+ * @api
+ */
+ this.mapBrowserEvent = mapBrowserPointerEvent;
+};
+ol.inherits(ol.interaction.ModifyEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Interaction for modifying feature geometries.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.ModifyOptions} options Options.
+ * @fires ol.interaction.ModifyEvent
+ * @api
+ */
+ol.interaction.Modify = function(options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.Modify.handleDownEvent_,
+ handleDragEvent: ol.interaction.Modify.handleDragEvent_,
+ handleEvent: ol.interaction.Modify.handleEvent,
+ handleUpEvent: ol.interaction.Modify.handleUpEvent_
+ });
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.primaryAction;
+
+
+ /**
+ * @private
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Browser event.
+ * @return {boolean} Combined condition result.
+ */
+ this.defaultDeleteCondition_ = function(mapBrowserEvent) {
+ return ol.events.condition.noModifierKeys(mapBrowserEvent) &&
+ ol.events.condition.singleClick(mapBrowserEvent);
+ };
+
+ /**
+ * @type {ol.EventsConditionType}
+ * @private
+ */
+ this.deleteCondition_ = options.deleteCondition ?
+ options.deleteCondition : this.defaultDeleteCondition_;
+
+ /**
+ * Editing vertex.
+ * @type {ol.Feature}
+ * @private
+ */
+ this.vertexFeature_ = null;
+
+ /**
+ * Segments intersecting {@link this.vertexFeature_} by segment uid.
+ * @type {Object.<string, boolean>}
+ * @private
+ */
+ this.vertexSegments_ = null;
+
+ /**
+ * @type {ol.Pixel}
+ * @private
+ */
+ this.lastPixel_ = [0, 0];
+
+ /**
+ * Tracks if the next `singleclick` event should be ignored to prevent
+ * accidental deletion right after vertex creation.
+ * @type {boolean}
+ * @private
+ */
+ this.ignoreNextSingleClick_ = false;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.modified_ = false;
+
+ /**
+ * Segment RTree for each layer
+ * @type {ol.structs.RBush.<ol.ModifySegmentDataType>}
+ * @private
+ */
+ this.rBush_ = new ol.structs.RBush();
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.pixelTolerance_ = options.pixelTolerance !== undefined ?
+ options.pixelTolerance : 10;
+
+ /**
+ * @type {boolean}
+ * @private
+ */
+ this.snappedToVertex_ = false;
+
+ /**
+ * Indicate whether the interaction is currently changing a feature's
+ * coordinates.
+ * @type {boolean}
+ * @private
+ */
+ this.changingFeature_ = false;
+
+ /**
+ * @type {Array}
+ * @private
+ */
+ this.dragSegments_ = [];
+
+ /**
+ * Draw overlay where sketch features are drawn.
+ * @type {ol.layer.Vector}
+ * @private
+ */
+ this.overlay_ = new ol.layer.Vector({
+ source: new ol.source.Vector({
+ useSpatialIndex: false,
+ wrapX: !!options.wrapX
+ }),
+ style: options.style ? options.style :
+ ol.interaction.Modify.getDefaultStyleFunction(),
+ updateWhileAnimating: true,
+ updateWhileInteracting: true
+ });
+
+ /**
+ * @const
+ * @private
+ * @type {Object.<string, function(ol.Feature, ol.geom.Geometry)>}
+ */
+ this.SEGMENT_WRITERS_ = {
+ 'Point': this.writePointGeometry_,
+ 'LineString': this.writeLineStringGeometry_,
+ 'LinearRing': this.writeLineStringGeometry_,
+ 'Polygon': this.writePolygonGeometry_,
+ 'MultiPoint': this.writeMultiPointGeometry_,
+ 'MultiLineString': this.writeMultiLineStringGeometry_,
+ 'MultiPolygon': this.writeMultiPolygonGeometry_,
+ 'GeometryCollection': this.writeGeometryCollectionGeometry_
+ };
+
+ /**
+ * @type {ol.Collection.<ol.Feature>}
+ * @private
+ */
+ this.features_ = options.features;
+
+ this.features_.forEach(this.addFeature_, this);
+ ol.events.listen(this.features_, ol.CollectionEventType.ADD,
+ this.handleFeatureAdd_, this);
+ ol.events.listen(this.features_, ol.CollectionEventType.REMOVE,
+ this.handleFeatureRemove_, this);
+
+ /**
+ * @type {ol.MapBrowserPointerEvent}
+ * @private
+ */
+ this.lastPointerEvent_ = null;
+
+};
+ol.inherits(ol.interaction.Modify, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Modify.prototype.addFeature_ = function(feature) {
+ var geometry = feature.getGeometry();
+ if (geometry.getType() in this.SEGMENT_WRITERS_) {
+ this.SEGMENT_WRITERS_[geometry.getType()].call(this, feature, geometry);
+ }
+ var map = this.getMap();
+ if (map) {
+ this.handlePointerAtPixel_(this.lastPixel_, map);
+ }
+ ol.events.listen(feature, ol.events.EventType.CHANGE,
+ this.handleFeatureChange_, this);
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} evt Map browser event
+ * @private
+ */
+ol.interaction.Modify.prototype.willModifyFeatures_ = function(evt) {
+ if (!this.modified_) {
+ this.modified_ = true;
+ this.dispatchEvent(new ol.interaction.ModifyEvent(
+ ol.ModifyEventType.MODIFYSTART, this.features_, evt));
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Modify.prototype.removeFeature_ = function(feature) {
+ this.removeFeatureSegmentData_(feature);
+ // Remove the vertex feature if the collection of canditate features
+ // is empty.
+ if (this.vertexFeature_ && this.features_.getLength() === 0) {
+ this.overlay_.getSource().removeFeature(this.vertexFeature_);
+ this.vertexFeature_ = null;
+ }
+ ol.events.unlisten(feature, ol.events.EventType.CHANGE,
+ this.handleFeatureChange_, this);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Modify.prototype.removeFeatureSegmentData_ = function(feature) {
+ var rBush = this.rBush_;
+ var /** @type {Array.<ol.ModifySegmentDataType>} */ nodesToRemove = [];
+ rBush.forEach(
+ /**
+ * @param {ol.ModifySegmentDataType} node RTree node.
+ */
+ function(node) {
+ if (feature === node.feature) {
+ nodesToRemove.push(node);
+ }
+ });
+ for (var i = nodesToRemove.length - 1; i >= 0; --i) {
+ rBush.remove(nodesToRemove[i]);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.Modify.prototype.setMap = function(map) {
+ this.overlay_.setMap(map);
+ ol.interaction.Pointer.prototype.setMap.call(this, map);
+};
+
+
+/**
+ * @param {ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Modify.prototype.handleFeatureAdd_ = function(evt) {
+ var feature = evt.element;
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ this.addFeature_(feature);
+};
+
+
+/**
+ * @param {ol.events.Event} evt Event.
+ * @private
+ */
+ol.interaction.Modify.prototype.handleFeatureChange_ = function(evt) {
+ if (!this.changingFeature_) {
+ var feature = /** @type {ol.Feature} */ (evt.target);
+ this.removeFeature_(feature);
+ this.addFeature_(feature);
+ }
+};
+
+
+/**
+ * @param {ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Modify.prototype.handleFeatureRemove_ = function(evt) {
+ var feature = /** @type {ol.Feature} */ (evt.element);
+ this.removeFeature_(feature);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.Point} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writePointGeometry_ = function(feature, geometry) {
+ var coordinates = geometry.getCoordinates();
+ var segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ segment: [coordinates, coordinates]
+ });
+ this.rBush_.insert(geometry.getExtent(), segmentData);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiPoint} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writeMultiPointGeometry_ = function(feature, geometry) {
+ var points = geometry.getCoordinates();
+ var coordinates, i, ii, segmentData;
+ for (i = 0, ii = points.length; i < ii; ++i) {
+ coordinates = points[i];
+ segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ depth: [i],
+ index: i,
+ segment: [coordinates, coordinates]
+ });
+ this.rBush_.insert(geometry.getExtent(), segmentData);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.LineString} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writeLineStringGeometry_ = function(feature, geometry) {
+ var coordinates = geometry.getCoordinates();
+ var i, ii, segment, segmentData;
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ index: i,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiLineString} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writeMultiLineStringGeometry_ = function(feature, geometry) {
+ var lines = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, segment, segmentData;
+ for (j = 0, jj = lines.length; j < jj; ++j) {
+ coordinates = lines[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ depth: [j],
+ index: i,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.Polygon} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writePolygonGeometry_ = function(feature, geometry) {
+ var rings = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, segment, segmentData;
+ for (j = 0, jj = rings.length; j < jj; ++j) {
+ coordinates = rings[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ depth: [j],
+ index: i,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiPolygon} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writeMultiPolygonGeometry_ = function(feature, geometry) {
+ var polygons = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, k, kk, rings, segment, segmentData;
+ for (k = 0, kk = polygons.length; k < kk; ++k) {
+ rings = polygons[k];
+ for (j = 0, jj = rings.length; j < jj; ++j) {
+ coordinates = rings[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ feature: feature,
+ geometry: geometry,
+ depth: [j, k],
+ index: i,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.GeometryCollection} geometry Geometry.
+ * @private
+ */
+ol.interaction.Modify.prototype.writeGeometryCollectionGeometry_ = function(feature, geometry) {
+ var i, geometries = geometry.getGeometriesArray();
+ for (i = 0; i < geometries.length; ++i) {
+ this.SEGMENT_WRITERS_[geometries[i].getType()].call(
+ this, feature, geometries[i]);
+ }
+};
+
+
+/**
+ * @param {ol.Coordinate} coordinates Coordinates.
+ * @return {ol.Feature} Vertex feature.
+ * @private
+ */
+ol.interaction.Modify.prototype.createOrUpdateVertexFeature_ = function(coordinates) {
+ var vertexFeature = this.vertexFeature_;
+ if (!vertexFeature) {
+ vertexFeature = new ol.Feature(new ol.geom.Point(coordinates));
+ this.vertexFeature_ = vertexFeature;
+ this.overlay_.getSource().addFeature(vertexFeature);
+ } else {
+ var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
+ geometry.setCoordinates(coordinates);
+ }
+ return vertexFeature;
+};
+
+
+/**
+ * @param {ol.ModifySegmentDataType} a The first segment data.
+ * @param {ol.ModifySegmentDataType} b The second segment data.
+ * @return {number} The difference in indexes.
+ * @private
+ */
+ol.interaction.Modify.compareIndexes_ = function(a, b) {
+ return a.index - b.index;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} evt Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.Modify}
+ * @private
+ */
+ol.interaction.Modify.handleDownEvent_ = function(evt) {
+ if (!this.condition_(evt)) {
+ return false;
+ }
+ this.handlePointerAtPixel_(evt.pixel, evt.map);
+ this.dragSegments_.length = 0;
+ this.modified_ = false;
+ var vertexFeature = this.vertexFeature_;
+ if (vertexFeature) {
+ var insertVertices = [];
+ var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
+ var vertex = geometry.getCoordinates();
+ var vertexExtent = ol.extent.boundingExtent([vertex]);
+ var segmentDataMatches = this.rBush_.getInExtent(vertexExtent);
+ var componentSegments = {};
+ segmentDataMatches.sort(ol.interaction.Modify.compareIndexes_);
+ for (var i = 0, ii = segmentDataMatches.length; i < ii; ++i) {
+ var segmentDataMatch = segmentDataMatches[i];
+ var segment = segmentDataMatch.segment;
+ var uid = goog.getUid(segmentDataMatch.feature);
+ var depth = segmentDataMatch.depth;
+ if (depth) {
+ uid += '-' + depth.join('-'); // separate feature components
+ }
+ if (!componentSegments[uid]) {
+ componentSegments[uid] = new Array(2);
+ }
+ if (ol.coordinate.equals(segment[0], vertex) &&
+ !componentSegments[uid][0]) {
+ this.dragSegments_.push([segmentDataMatch, 0]);
+ componentSegments[uid][0] = segmentDataMatch;
+ } else if (ol.coordinate.equals(segment[1], vertex) &&
+ !componentSegments[uid][1]) {
+
+ // prevent dragging closed linestrings by the connecting node
+ if ((segmentDataMatch.geometry.getType() ===
+ ol.geom.GeometryType.LINE_STRING ||
+ segmentDataMatch.geometry.getType() ===
+ ol.geom.GeometryType.MULTI_LINE_STRING) &&
+ componentSegments[uid][0] &&
+ componentSegments[uid][0].index === 0) {
+ continue;
+ }
+
+ this.dragSegments_.push([segmentDataMatch, 1]);
+ componentSegments[uid][1] = segmentDataMatch;
+ } else if (goog.getUid(segment) in this.vertexSegments_ &&
+ (!componentSegments[uid][0] && !componentSegments[uid][1])) {
+ insertVertices.push([segmentDataMatch, vertex]);
+ }
+ }
+ if (insertVertices.length) {
+ this.willModifyFeatures_(evt);
+ }
+ for (var j = insertVertices.length - 1; j >= 0; --j) {
+ this.insertVertex_.apply(this, insertVertices[j]);
+ }
+ }
+ return !!this.vertexFeature_;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} evt Event.
+ * @this {ol.interaction.Modify}
+ * @private
+ */
+ol.interaction.Modify.handleDragEvent_ = function(evt) {
+ this.ignoreNextSingleClick_ = false;
+ this.willModifyFeatures_(evt);
+
+ var vertex = evt.coordinate;
+ for (var i = 0, ii = this.dragSegments_.length; i < ii; ++i) {
+ var dragSegment = this.dragSegments_[i];
+ var segmentData = dragSegment[0];
+ var depth = segmentData.depth;
+ var geometry = segmentData.geometry;
+ var coordinates = geometry.getCoordinates();
+ var segment = segmentData.segment;
+ var index = dragSegment[1];
+
+ while (vertex.length < geometry.getStride()) {
+ vertex.push(0);
+ }
+
+ switch (geometry.getType()) {
+ case ol.geom.GeometryType.POINT:
+ coordinates = vertex;
+ segment[0] = segment[1] = vertex;
+ break;
+ case ol.geom.GeometryType.MULTI_POINT:
+ coordinates[segmentData.index] = vertex;
+ segment[0] = segment[1] = vertex;
+ break;
+ case ol.geom.GeometryType.LINE_STRING:
+ coordinates[segmentData.index + index] = vertex;
+ segment[index] = vertex;
+ break;
+ case ol.geom.GeometryType.MULTI_LINE_STRING:
+ coordinates[depth[0]][segmentData.index + index] = vertex;
+ segment[index] = vertex;
+ break;
+ case ol.geom.GeometryType.POLYGON:
+ coordinates[depth[0]][segmentData.index + index] = vertex;
+ segment[index] = vertex;
+ break;
+ case ol.geom.GeometryType.MULTI_POLYGON:
+ coordinates[depth[1]][depth[0]][segmentData.index + index] = vertex;
+ segment[index] = vertex;
+ break;
+ default:
+ // pass
+ }
+
+ this.setGeometryCoordinates_(geometry, coordinates);
+ }
+ this.createOrUpdateVertexFeature_(vertex);
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} evt Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.Modify}
+ * @private
+ */
+ol.interaction.Modify.handleUpEvent_ = function(evt) {
+ var segmentData;
+ for (var i = this.dragSegments_.length - 1; i >= 0; --i) {
+ segmentData = this.dragSegments_[i][0];
+ this.rBush_.update(ol.extent.boundingExtent(segmentData.segment),
+ segmentData);
+ }
+ if (this.modified_) {
+ this.dispatchEvent(new ol.interaction.ModifyEvent(
+ ol.ModifyEventType.MODIFYEND, this.features_, evt));
+ this.modified_ = false;
+ }
+ return false;
+};
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} and may modify the
+ * geometry.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.Modify}
+ * @api
+ */
+ol.interaction.Modify.handleEvent = function(mapBrowserEvent) {
+ if (!(mapBrowserEvent instanceof ol.MapBrowserPointerEvent)) {
+ return true;
+ }
+ this.lastPointerEvent_ = mapBrowserEvent;
+
+ var handled;
+ if (!mapBrowserEvent.map.getView().getHints()[ol.ViewHint.INTERACTING] &&
+ mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERMOVE &&
+ !this.handlingDownUpSequence) {
+ this.handlePointerMove_(mapBrowserEvent);
+ }
+ if (this.vertexFeature_ && this.deleteCondition_(mapBrowserEvent)) {
+ if (mapBrowserEvent.type != ol.MapBrowserEvent.EventType.SINGLECLICK ||
+ !this.ignoreNextSingleClick_) {
+ var geometry = this.vertexFeature_.getGeometry();
+ goog.asserts.assertInstanceof(geometry, ol.geom.Point,
+ 'geometry should be an ol.geom.Point');
+ handled = this.removePoint();
+ } else {
+ handled = true;
+ }
+ }
+
+ if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.SINGLECLICK) {
+ this.ignoreNextSingleClick_ = false;
+ }
+
+ return ol.interaction.Pointer.handleEvent.call(this, mapBrowserEvent) &&
+ !handled;
+};
+
+
+/**
+ * @param {ol.MapBrowserEvent} evt Event.
+ * @private
+ */
+ol.interaction.Modify.prototype.handlePointerMove_ = function(evt) {
+ this.lastPixel_ = evt.pixel;
+ this.handlePointerAtPixel_(evt.pixel, evt.map);
+};
+
+
+/**
+ * @param {ol.Pixel} pixel Pixel
+ * @param {ol.Map} map Map.
+ * @private
+ */
+ol.interaction.Modify.prototype.handlePointerAtPixel_ = function(pixel, map) {
+ var pixelCoordinate = map.getCoordinateFromPixel(pixel);
+ var sortByDistance = function(a, b) {
+ return ol.coordinate.squaredDistanceToSegment(pixelCoordinate, a.segment) -
+ ol.coordinate.squaredDistanceToSegment(pixelCoordinate, b.segment);
+ };
+
+ var lowerLeft = map.getCoordinateFromPixel(
+ [pixel[0] - this.pixelTolerance_, pixel[1] + this.pixelTolerance_]);
+ var upperRight = map.getCoordinateFromPixel(
+ [pixel[0] + this.pixelTolerance_, pixel[1] - this.pixelTolerance_]);
+ var box = ol.extent.boundingExtent([lowerLeft, upperRight]);
+
+ var rBush = this.rBush_;
+ var nodes = rBush.getInExtent(box);
+ if (nodes.length > 0) {
+ nodes.sort(sortByDistance);
+ var node = nodes[0];
+ var closestSegment = node.segment;
+ var vertex = (ol.coordinate.closestOnSegment(pixelCoordinate,
+ closestSegment));
+ var vertexPixel = map.getPixelFromCoordinate(vertex);
+ if (Math.sqrt(ol.coordinate.squaredDistance(pixel, vertexPixel)) <=
+ this.pixelTolerance_) {
+ var pixel1 = map.getPixelFromCoordinate(closestSegment[0]);
+ var pixel2 = map.getPixelFromCoordinate(closestSegment[1]);
+ var squaredDist1 = ol.coordinate.squaredDistance(vertexPixel, pixel1);
+ var squaredDist2 = ol.coordinate.squaredDistance(vertexPixel, pixel2);
+ var dist = Math.sqrt(Math.min(squaredDist1, squaredDist2));
+ this.snappedToVertex_ = dist <= this.pixelTolerance_;
+ if (this.snappedToVertex_) {
+ vertex = squaredDist1 > squaredDist2 ?
+ closestSegment[1] : closestSegment[0];
+ }
+ this.createOrUpdateVertexFeature_(vertex);
+ var vertexSegments = {};
+ vertexSegments[goog.getUid(closestSegment)] = true;
+ var segment;
+ for (var i = 1, ii = nodes.length; i < ii; ++i) {
+ segment = nodes[i].segment;
+ if ((ol.coordinate.equals(closestSegment[0], segment[0]) &&
+ ol.coordinate.equals(closestSegment[1], segment[1]) ||
+ (ol.coordinate.equals(closestSegment[0], segment[1]) &&
+ ol.coordinate.equals(closestSegment[1], segment[0])))) {
+ vertexSegments[goog.getUid(segment)] = true;
+ } else {
+ break;
+ }
+ }
+ this.vertexSegments_ = vertexSegments;
+ return;
+ }
+ }
+ if (this.vertexFeature_) {
+ this.overlay_.getSource().removeFeature(this.vertexFeature_);
+ this.vertexFeature_ = null;
+ }
+};
+
+
+/**
+ * @param {ol.ModifySegmentDataType} segmentData Segment data.
+ * @param {ol.Coordinate} vertex Vertex.
+ * @private
+ */
+ol.interaction.Modify.prototype.insertVertex_ = function(segmentData, vertex) {
+ var segment = segmentData.segment;
+ var feature = segmentData.feature;
+ var geometry = segmentData.geometry;
+ var depth = segmentData.depth;
+ var index = segmentData.index;
+ var coordinates;
+
+ while (vertex.length < geometry.getStride()) {
+ vertex.push(0);
+ }
+
+ switch (geometry.getType()) {
+ case ol.geom.GeometryType.MULTI_LINE_STRING:
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiLineString,
+ 'geometry should be an ol.geom.MultiLineString');
+ coordinates = geometry.getCoordinates();
+ coordinates[depth[0]].splice(index + 1, 0, vertex);
+ break;
+ case ol.geom.GeometryType.POLYGON:
+ goog.asserts.assertInstanceof(geometry, ol.geom.Polygon,
+ 'geometry should be an ol.geom.Polygon');
+ coordinates = geometry.getCoordinates();
+ coordinates[depth[0]].splice(index + 1, 0, vertex);
+ break;
+ case ol.geom.GeometryType.MULTI_POLYGON:
+ goog.asserts.assertInstanceof(geometry, ol.geom.MultiPolygon,
+ 'geometry should be an ol.geom.MultiPolygon');
+ coordinates = geometry.getCoordinates();
+ coordinates[depth[1]][depth[0]].splice(index + 1, 0, vertex);
+ break;
+ case ol.geom.GeometryType.LINE_STRING:
+ goog.asserts.assertInstanceof(geometry, ol.geom.LineString,
+ 'geometry should be an ol.geom.LineString');
+ coordinates = geometry.getCoordinates();
+ coordinates.splice(index + 1, 0, vertex);
+ break;
+ default:
+ return;
+ }
+
+ this.setGeometryCoordinates_(geometry, coordinates);
+ var rTree = this.rBush_;
+ goog.asserts.assert(segment !== undefined, 'segment should be defined');
+ rTree.remove(segmentData);
+ goog.asserts.assert(index !== undefined, 'index should be defined');
+ this.updateSegmentIndices_(geometry, index, depth, 1);
+ var newSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ segment: [segment[0], vertex],
+ feature: feature,
+ geometry: geometry,
+ depth: depth,
+ index: index
+ });
+ rTree.insert(ol.extent.boundingExtent(newSegmentData.segment),
+ newSegmentData);
+ this.dragSegments_.push([newSegmentData, 1]);
+
+ var newSegmentData2 = /** @type {ol.ModifySegmentDataType} */ ({
+ segment: [vertex, segment[1]],
+ feature: feature,
+ geometry: geometry,
+ depth: depth,
+ index: index + 1
+ });
+ rTree.insert(ol.extent.boundingExtent(newSegmentData2.segment),
+ newSegmentData2);
+ this.dragSegments_.push([newSegmentData2, 0]);
+ this.ignoreNextSingleClick_ = true;
+};
+
+/**
+ * Removes the vertex currently being pointed.
+ * @return {boolean} True when a vertex was removed.
+ * @api
+ */
+ol.interaction.Modify.prototype.removePoint = function() {
+ var handled = false;
+ if (this.lastPointerEvent_ && this.lastPointerEvent_.type != ol.MapBrowserEvent.EventType.POINTERDRAG) {
+ var evt = this.lastPointerEvent_;
+ this.willModifyFeatures_(evt);
+ handled = this.removeVertex_();
+ this.dispatchEvent(new ol.interaction.ModifyEvent(
+ ol.ModifyEventType.MODIFYEND, this.features_, evt));
+ this.modified_ = false;
+ }
+ return handled;
+};
+
+/**
+ * Removes a vertex from all matching features.
+ * @return {boolean} True when a vertex was removed.
+ * @private
+ */
+ol.interaction.Modify.prototype.removeVertex_ = function() {
+ var dragSegments = this.dragSegments_;
+ var segmentsByFeature = {};
+ var component, coordinates, dragSegment, geometry, i, index, left;
+ var newIndex, right, segmentData, uid, deleted;
+ for (i = dragSegments.length - 1; i >= 0; --i) {
+ dragSegment = dragSegments[i];
+ segmentData = dragSegment[0];
+ uid = goog.getUid(segmentData.feature);
+ if (segmentData.depth) {
+ // separate feature components
+ uid += '-' + segmentData.depth.join('-');
+ }
+ if (!(uid in segmentsByFeature)) {
+ segmentsByFeature[uid] = {};
+ }
+ if (dragSegment[1] === 0) {
+ segmentsByFeature[uid].right = segmentData;
+ segmentsByFeature[uid].index = segmentData.index;
+ } else if (dragSegment[1] == 1) {
+ segmentsByFeature[uid].left = segmentData;
+ segmentsByFeature[uid].index = segmentData.index + 1;
+ }
+
+ }
+ for (uid in segmentsByFeature) {
+ right = segmentsByFeature[uid].right;
+ left = segmentsByFeature[uid].left;
+ index = segmentsByFeature[uid].index;
+ newIndex = index - 1;
+ if (left !== undefined) {
+ segmentData = left;
+ } else {
+ segmentData = right;
+ }
+ if (newIndex < 0) {
+ newIndex = 0;
+ }
+ geometry = segmentData.geometry;
+ coordinates = geometry.getCoordinates();
+ component = coordinates;
+ deleted = false;
+ switch (geometry.getType()) {
+ case ol.geom.GeometryType.MULTI_LINE_STRING:
+ if (coordinates[segmentData.depth[0]].length > 2) {
+ coordinates[segmentData.depth[0]].splice(index, 1);
+ deleted = true;
+ }
+ break;
+ case ol.geom.GeometryType.LINE_STRING:
+ if (coordinates.length > 2) {
+ coordinates.splice(index, 1);
+ deleted = true;
+ }
+ break;
+ case ol.geom.GeometryType.MULTI_POLYGON:
+ component = component[segmentData.depth[1]];
+ /* falls through */
+ case ol.geom.GeometryType.POLYGON:
+ component = component[segmentData.depth[0]];
+ if (component.length > 4) {
+ if (index == component.length - 1) {
+ index = 0;
+ }
+ component.splice(index, 1);
+ deleted = true;
+ if (index === 0) {
+ // close the ring again
+ component.pop();
+ component.push(component[0]);
+ newIndex = component.length - 1;
+ }
+ }
+ break;
+ default:
+ // pass
+ }
+
+ if (deleted) {
+ this.setGeometryCoordinates_(geometry, coordinates);
+ var segments = [];
+ if (left !== undefined) {
+ this.rBush_.remove(left);
+ segments.push(left.segment[0]);
+ }
+ if (right !== undefined) {
+ this.rBush_.remove(right);
+ segments.push(right.segment[1]);
+ }
+ if (left !== undefined && right !== undefined) {
+ goog.asserts.assert(newIndex >= 0, 'newIndex should be larger than 0');
+
+ var newSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
+ depth: segmentData.depth,
+ feature: segmentData.feature,
+ geometry: segmentData.geometry,
+ index: newIndex,
+ segment: segments
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(newSegmentData.segment),
+ newSegmentData);
+ }
+ this.updateSegmentIndices_(geometry, index, segmentData.depth, -1);
+ if (this.vertexFeature_) {
+ this.overlay_.getSource().removeFeature(this.vertexFeature_);
+ this.vertexFeature_ = null;
+ }
+ }
+
+ }
+ return true;
+};
+
+
+/**
+ * @param {ol.geom.SimpleGeometry} geometry Geometry.
+ * @param {Array} coordinates Coordinates.
+ * @private
+ */
+ol.interaction.Modify.prototype.setGeometryCoordinates_ = function(geometry, coordinates) {
+ this.changingFeature_ = true;
+ geometry.setCoordinates(coordinates);
+ this.changingFeature_ = false;
+};
+
+
+/**
+ * @param {ol.geom.SimpleGeometry} geometry Geometry.
+ * @param {number} index Index.
+ * @param {Array.<number>|undefined} depth Depth.
+ * @param {number} delta Delta (1 or -1).
+ * @private
+ */
+ol.interaction.Modify.prototype.updateSegmentIndices_ = function(
+ geometry, index, depth, delta) {
+ this.rBush_.forEachInExtent(geometry.getExtent(), function(segmentDataMatch) {
+ if (segmentDataMatch.geometry === geometry &&
+ (depth === undefined || segmentDataMatch.depth === undefined ||
+ ol.array.equals(segmentDataMatch.depth, depth)) &&
+ segmentDataMatch.index > index) {
+ segmentDataMatch.index += delta;
+ }
+ });
+};
+
+
+/**
+ * @return {ol.StyleFunction} Styles.
+ */
+ol.interaction.Modify.getDefaultStyleFunction = function() {
+ var style = ol.style.createDefaultEditingStyles();
+ return function(feature, resolution) {
+ return style[ol.geom.GeometryType.POINT];
+ };
+};
+
+goog.provide('ol.interaction.Select');
+goog.provide('ol.interaction.SelectEvent');
+goog.provide('ol.interaction.SelectEventType');
+
+goog.require('goog.asserts');
+goog.require('ol.functions');
+goog.require('ol.CollectionEventType');
+goog.require('ol.Feature');
+goog.require('ol.array');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.condition');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.layer.Vector');
+goog.require('ol.object');
+goog.require('ol.source.Vector');
+
+
+/**
+ * @enum {string}
+ */
+ol.interaction.SelectEventType = {
+ /**
+ * Triggered when feature(s) has been (de)selected.
+ * @event ol.interaction.SelectEvent#select
+ * @api
+ */
+ SELECT: 'select'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.Select} instances are instances of
+ * this type.
+ *
+ * @param {string} type The event type.
+ * @param {Array.<ol.Feature>} selected Selected features.
+ * @param {Array.<ol.Feature>} deselected Deselected features.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Associated
+ * {@link ol.MapBrowserEvent}.
+ * @implements {oli.SelectEvent}
+ * @extends {ol.events.Event}
+ * @constructor
+ */
+ol.interaction.SelectEvent = function(type, selected, deselected, mapBrowserEvent) {
+ ol.events.Event.call(this, type);
+
+ /**
+ * Selected features array.
+ * @type {Array.<ol.Feature>}
+ * @api
+ */
+ this.selected = selected;
+
+ /**
+ * Deselected features array.
+ * @type {Array.<ol.Feature>}
+ * @api
+ */
+ this.deselected = deselected;
+
+ /**
+ * Associated {@link ol.MapBrowserEvent}.
+ * @type {ol.MapBrowserEvent}
+ * @api
+ */
+ this.mapBrowserEvent = mapBrowserEvent;
+};
+ol.inherits(ol.interaction.SelectEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Interaction for selecting vector features. By default, selected features are
+ * styled differently, so this interaction can be used for visual highlighting,
+ * as well as selecting features for other actions, such as modification or
+ * output. There are three ways of controlling which features are selected:
+ * using the browser event as defined by the `condition` and optionally the
+ * `toggle`, `add`/`remove`, and `multi` options; a `layers` filter; and a
+ * further feature filter using the `filter` option.
+ *
+ * Selected features are added to an internal unmanaged layer.
+ *
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @param {olx.interaction.SelectOptions=} opt_options Options.
+ * @fires ol.interaction.SelectEvent
+ * @api stable
+ */
+ol.interaction.Select = function(opt_options) {
+
+ ol.interaction.Interaction.call(this, {
+ handleEvent: ol.interaction.Select.handleEvent
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.condition_ = options.condition ?
+ options.condition : ol.events.condition.singleClick;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.addCondition_ = options.addCondition ?
+ options.addCondition : ol.events.condition.never;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.removeCondition_ = options.removeCondition ?
+ options.removeCondition : ol.events.condition.never;
+
+ /**
+ * @private
+ * @type {ol.EventsConditionType}
+ */
+ this.toggleCondition_ = options.toggleCondition ?
+ options.toggleCondition : ol.events.condition.shiftKeyOnly;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.multi_ = options.multi ? options.multi : false;
+
+ /**
+ * @private
+ * @type {ol.SelectFilterFunction}
+ */
+ this.filter_ = options.filter ? options.filter :
+ ol.functions.TRUE;
+
+ var featureOverlay = new ol.layer.Vector({
+ source: new ol.source.Vector({
+ useSpatialIndex: false,
+ features: options.features,
+ wrapX: options.wrapX
+ }),
+ style: options.style ? options.style :
+ ol.interaction.Select.getDefaultStyleFunction(),
+ updateWhileAnimating: true,
+ updateWhileInteracting: true
+ });
+
+ /**
+ * @private
+ * @type {ol.layer.Vector}
+ */
+ this.featureOverlay_ = featureOverlay;
+
+ var layerFilter;
+ if (options.layers) {
+ if (typeof options.layers === 'function') {
+ /**
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean} Include.
+ */
+ layerFilter = function(layer) {
+ goog.asserts.assertFunction(options.layers);
+ return options.layers(layer);
+ };
+ } else {
+ var layers = options.layers;
+ /**
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean} Include.
+ */
+ layerFilter = function(layer) {
+ return ol.array.includes(layers, layer);
+ };
+ }
+ } else {
+ layerFilter = ol.functions.TRUE;
+ }
+
+ /**
+ * @private
+ * @type {function(ol.layer.Layer): boolean}
+ */
+ this.layerFilter_ = layerFilter;
+
+ /**
+ * An association between selected feature (key)
+ * and layer (value)
+ * @private
+ * @type {Object.<number, ol.layer.Layer>}
+ */
+ this.featureLayerAssociation_ = {};
+
+ var features = this.featureOverlay_.getSource().getFeaturesCollection();
+ ol.events.listen(features, ol.CollectionEventType.ADD,
+ this.addFeature_, this);
+ ol.events.listen(features, ol.CollectionEventType.REMOVE,
+ this.removeFeature_, this);
+
+};
+ol.inherits(ol.interaction.Select, ol.interaction.Interaction);
+
+
+/**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.layer.Layer} layer Layer.
+ * @private
+ */
+ol.interaction.Select.prototype.addFeatureLayerAssociation_ = function(feature, layer) {
+ var key = goog.getUid(feature);
+ this.featureLayerAssociation_[key] = layer;
+};
+
+
+/**
+ * Get the selected features.
+ * @return {ol.Collection.<ol.Feature>} Features collection.
+ * @api stable
+ */
+ol.interaction.Select.prototype.getFeatures = function() {
+ return this.featureOverlay_.getSource().getFeaturesCollection();
+};
+
+
+/**
+ * Returns the associated {@link ol.layer.Vector vectorlayer} of
+ * the (last) selected feature. Note that this will not work with any
+ * programmatic method like pushing features to
+ * {@link ol.interaction.Select#getFeatures collection}.
+ * @param {ol.Feature|ol.render.Feature} feature Feature
+ * @return {ol.layer.Vector} Layer.
+ * @api
+ */
+ol.interaction.Select.prototype.getLayer = function(feature) {
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ var key = goog.getUid(feature);
+ return /** @type {ol.layer.Vector} */ (this.featureLayerAssociation_[key]);
+};
+
+
+/**
+ * Handles the {@link ol.MapBrowserEvent map browser event} and may change the
+ * selected state of features.
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} `false` to stop event propagation.
+ * @this {ol.interaction.Select}
+ * @api
+ */
+ol.interaction.Select.handleEvent = function(mapBrowserEvent) {
+ if (!this.condition_(mapBrowserEvent)) {
+ return true;
+ }
+ var add = this.addCondition_(mapBrowserEvent);
+ var remove = this.removeCondition_(mapBrowserEvent);
+ var toggle = this.toggleCondition_(mapBrowserEvent);
+ var set = !add && !remove && !toggle;
+ var map = mapBrowserEvent.map;
+ var features = this.featureOverlay_.getSource().getFeaturesCollection();
+ var deselected = [];
+ var selected = [];
+ if (set) {
+ // Replace the currently selected feature(s) with the feature(s) at the
+ // pixel, or clear the selected feature(s) if there is no feature at
+ // the pixel.
+ ol.object.clear(this.featureLayerAssociation_);
+ map.forEachFeatureAtPixel(mapBrowserEvent.pixel,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean|undefined} Continue to iterate over the features.
+ */
+ function(feature, layer) {
+ if (this.filter_(feature, layer)) {
+ selected.push(feature);
+ this.addFeatureLayerAssociation_(feature, layer);
+ return !this.multi_;
+ }
+ }, this, this.layerFilter_);
+ if (selected.length > 0 && features.getLength() == 1 && features.item(0) == selected[0]) {
+ // No change; an already selected feature is selected again
+ selected.length = 0;
+ } else {
+ if (features.getLength() !== 0) {
+ deselected = Array.prototype.concat(features.getArray());
+ features.clear();
+ }
+ features.extend(selected);
+ }
+ } else {
+ // Modify the currently selected feature(s).
+ map.forEachFeatureAtPixel(mapBrowserEvent.pixel,
+ /**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean|undefined} Continue to iterate over the features.
+ */
+ function(feature, layer) {
+ if (this.filter_(feature, layer)) {
+ if ((add || toggle) &&
+ !ol.array.includes(features.getArray(), feature)) {
+ selected.push(feature);
+ this.addFeatureLayerAssociation_(feature, layer);
+ } else if ((remove || toggle) &&
+ ol.array.includes(features.getArray(), feature)) {
+ deselected.push(feature);
+ this.removeFeatureLayerAssociation_(feature);
+ }
+ return !this.multi_;
+ }
+ }, this, this.layerFilter_);
+ var i;
+ for (i = deselected.length - 1; i >= 0; --i) {
+ features.remove(deselected[i]);
+ }
+ features.extend(selected);
+ }
+ if (selected.length > 0 || deselected.length > 0) {
+ this.dispatchEvent(
+ new ol.interaction.SelectEvent(ol.interaction.SelectEventType.SELECT,
+ selected, deselected, mapBrowserEvent));
+ }
+ return ol.events.condition.pointerMove(mapBrowserEvent);
+};
+
+
+/**
+ * Remove the interaction from its current map, if any, and attach it to a new
+ * map, if any. Pass `null` to just remove the interaction from the current map.
+ * @param {ol.Map} map Map.
+ * @api stable
+ */
+ol.interaction.Select.prototype.setMap = function(map) {
+ var currentMap = this.getMap();
+ var selectedFeatures =
+ this.featureOverlay_.getSource().getFeaturesCollection();
+ if (currentMap) {
+ selectedFeatures.forEach(currentMap.unskipFeature, currentMap);
+ }
+ ol.interaction.Interaction.prototype.setMap.call(this, map);
+ this.featureOverlay_.setMap(map);
+ if (map) {
+ selectedFeatures.forEach(map.skipFeature, map);
+ }
+};
+
+
+/**
+ * @return {ol.StyleFunction} Styles.
+ */
+ol.interaction.Select.getDefaultStyleFunction = function() {
+ var styles = ol.style.createDefaultEditingStyles();
+ ol.array.extend(styles[ol.geom.GeometryType.POLYGON],
+ styles[ol.geom.GeometryType.LINE_STRING]);
+ ol.array.extend(styles[ol.geom.GeometryType.GEOMETRY_COLLECTION],
+ styles[ol.geom.GeometryType.LINE_STRING]);
+
+ return function(feature, resolution) {
+ return styles[feature.getGeometry().getType()];
+ };
+};
+
+
+/**
+ * @param {ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Select.prototype.addFeature_ = function(evt) {
+ var feature = evt.element;
+ var map = this.getMap();
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ if (map) {
+ map.skipFeature(feature);
+ }
+};
+
+
+/**
+ * @param {ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Select.prototype.removeFeature_ = function(evt) {
+ var feature = evt.element;
+ var map = this.getMap();
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ if (map) {
+ map.unskipFeature(feature);
+ }
+};
+
+
+/**
+ * @param {ol.Feature|ol.render.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Select.prototype.removeFeatureLayerAssociation_ = function(feature) {
+ var key = goog.getUid(feature);
+ delete this.featureLayerAssociation_[key];
+};
+
+goog.provide('ol.interaction.Snap');
+goog.provide('ol.interaction.SnapProperty');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEvent');
+goog.require('ol.CollectionEventType');
+goog.require('ol.Feature');
+goog.require('ol.Object');
+goog.require('ol.Observable');
+goog.require('ol.coordinate');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.geom.Geometry');
+goog.require('ol.interaction.Pointer');
+goog.require('ol.functions');
+goog.require('ol.object');
+goog.require('ol.source.Vector');
+goog.require('ol.source.VectorEvent');
+goog.require('ol.source.VectorEventType');
+goog.require('ol.structs.RBush');
+
+
+/**
+ * @classdesc
+ * Handles snapping of vector features while modifying or drawing them. The
+ * features can come from a {@link ol.source.Vector} or {@link ol.Collection}
+ * Any interaction object that allows the user to interact
+ * with the features using the mouse can benefit from the snapping, as long
+ * as it is added before.
+ *
+ * The snap interaction modifies map browser event `coordinate` and `pixel`
+ * properties to force the snap to occur to any interaction that them.
+ *
+ * Example:
+ *
+ * var snap = new ol.interaction.Snap({
+ * source: source
+ * });
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @param {olx.interaction.SnapOptions=} opt_options Options.
+ * @api
+ */
+ol.interaction.Snap = function(opt_options) {
+
+ ol.interaction.Pointer.call(this, {
+ handleEvent: ol.interaction.Snap.handleEvent_,
+ handleDownEvent: ol.functions.TRUE,
+ handleUpEvent: ol.interaction.Snap.handleUpEvent_
+ });
+
+ var options = opt_options ? opt_options : {};
+
+ /**
+ * @type {ol.source.Vector}
+ * @private
+ */
+ this.source_ = options.source ? options.source : null;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.vertex_ = options.vertex !== undefined ? options.vertex : true;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.edge_ = options.edge !== undefined ? options.edge : true;
+
+ /**
+ * @type {ol.Collection.<ol.Feature>}
+ * @private
+ */
+ this.features_ = options.features ? options.features : null;
+
+ /**
+ * @type {Array.<ol.EventsKey>}
+ * @private
+ */
+ this.featuresListenerKeys_ = [];
+
+ /**
+ * @type {Object.<number, ol.EventsKey>}
+ * @private
+ */
+ this.geometryChangeListenerKeys_ = {};
+
+ /**
+ * @type {Object.<number, ol.EventsKey>}
+ * @private
+ */
+ this.geometryModifyListenerKeys_ = {};
+
+ /**
+ * Extents are preserved so indexed segment can be quickly removed
+ * when its feature geometry changes
+ * @type {Object.<number, ol.Extent>}
+ * @private
+ */
+ this.indexedFeaturesExtents_ = {};
+
+ /**
+ * If a feature geometry changes while a pointer drag|move event occurs, the
+ * feature doesn't get updated right away. It will be at the next 'pointerup'
+ * event fired.
+ * @type {Object.<number, ol.Feature>}
+ * @private
+ */
+ this.pendingFeatures_ = {};
+
+ /**
+ * Used for distance sorting in sortByDistance_
+ * @type {ol.Coordinate}
+ * @private
+ */
+ this.pixelCoordinate_ = null;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.pixelTolerance_ = options.pixelTolerance !== undefined ?
+ options.pixelTolerance : 10;
+
+ /**
+ * @type {function(ol.SnapSegmentDataType, ol.SnapSegmentDataType): number}
+ * @private
+ */
+ this.sortByDistance_ = ol.interaction.Snap.sortByDistance.bind(this);
+
+
+ /**
+ * Segment RTree for each layer
+ * @type {ol.structs.RBush.<ol.SnapSegmentDataType>}
+ * @private
+ */
+ this.rBush_ = new ol.structs.RBush();
+
+
+ /**
+ * @const
+ * @private
+ * @type {Object.<string, function(ol.Feature, ol.geom.Geometry)>}
+ */
+ this.SEGMENT_WRITERS_ = {
+ 'Point': this.writePointGeometry_,
+ 'LineString': this.writeLineStringGeometry_,
+ 'LinearRing': this.writeLineStringGeometry_,
+ 'Polygon': this.writePolygonGeometry_,
+ 'MultiPoint': this.writeMultiPointGeometry_,
+ 'MultiLineString': this.writeMultiLineStringGeometry_,
+ 'MultiPolygon': this.writeMultiPolygonGeometry_,
+ 'GeometryCollection': this.writeGeometryCollectionGeometry_
+ };
+};
+ol.inherits(ol.interaction.Snap, ol.interaction.Pointer);
+
+
+/**
+ * Add a feature to the collection of features that we may snap to.
+ * @param {ol.Feature} feature Feature.
+ * @param {boolean=} opt_listen Whether to listen to the geometry change or not
+ * Defaults to `true`.
+ * @api
+ */
+ol.interaction.Snap.prototype.addFeature = function(feature, opt_listen) {
+ var listen = opt_listen !== undefined ? opt_listen : true;
+ var feature_uid = goog.getUid(feature);
+ var geometry = feature.getGeometry();
+ if (geometry) {
+ var segmentWriter = this.SEGMENT_WRITERS_[geometry.getType()];
+ if (segmentWriter) {
+ this.indexedFeaturesExtents_[feature_uid] = geometry.getExtent(
+ ol.extent.createEmpty());
+ segmentWriter.call(this, feature, geometry);
+
+ if (listen) {
+ this.geometryModifyListenerKeys_[feature_uid] = ol.events.listen(
+ geometry,
+ ol.events.EventType.CHANGE,
+ this.handleGeometryModify_.bind(this, feature),
+ this);
+ }
+ }
+ }
+
+ if (listen) {
+ this.geometryChangeListenerKeys_[feature_uid] = ol.events.listen(
+ feature,
+ ol.Object.getChangeEventType(feature.getGeometryName()),
+ this.handleGeometryChange_, this);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Snap.prototype.forEachFeatureAdd_ = function(feature) {
+ this.addFeature(feature);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @private
+ */
+ol.interaction.Snap.prototype.forEachFeatureRemove_ = function(feature) {
+ this.removeFeature(feature);
+};
+
+
+/**
+ * @return {ol.Collection.<ol.Feature>|Array.<ol.Feature>} Features.
+ * @private
+ */
+ol.interaction.Snap.prototype.getFeatures_ = function() {
+ var features;
+ if (this.features_) {
+ features = this.features_;
+ } else if (this.source_) {
+ features = this.source_.getFeatures();
+ }
+ goog.asserts.assert(features !== undefined, 'features should be defined');
+ return features;
+};
+
+
+/**
+ * @param {ol.source.VectorEvent|ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Snap.prototype.handleFeatureAdd_ = function(evt) {
+ var feature;
+ if (evt instanceof ol.source.VectorEvent) {
+ feature = evt.feature;
+ } else if (evt instanceof ol.CollectionEvent) {
+ feature = evt.element;
+ }
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ this.addFeature(feature);
+};
+
+
+/**
+ * @param {ol.source.VectorEvent|ol.CollectionEvent} evt Event.
+ * @private
+ */
+ol.interaction.Snap.prototype.handleFeatureRemove_ = function(evt) {
+ var feature;
+ if (evt instanceof ol.source.VectorEvent) {
+ feature = evt.feature;
+ } else if (evt instanceof ol.CollectionEvent) {
+ feature = evt.element;
+ }
+ goog.asserts.assertInstanceof(feature, ol.Feature,
+ 'feature should be an ol.Feature');
+ this.removeFeature(feature);
+};
+
+
+/**
+ * @param {ol.events.Event} evt Event.
+ * @private
+ */
+ol.interaction.Snap.prototype.handleGeometryChange_ = function(evt) {
+ var feature = evt.target;
+ goog.asserts.assertInstanceof(feature, ol.Feature);
+ this.removeFeature(feature, true);
+ this.addFeature(feature, true);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature which geometry was modified.
+ * @param {ol.events.Event} evt Event.
+ * @private
+ */
+ol.interaction.Snap.prototype.handleGeometryModify_ = function(feature, evt) {
+ if (this.handlingDownUpSequence) {
+ var uid = goog.getUid(feature);
+ if (!(uid in this.pendingFeatures_)) {
+ this.pendingFeatures_[uid] = feature;
+ }
+ } else {
+ this.updateFeature_(feature);
+ }
+};
+
+
+/**
+ * Remove a feature from the collection of features that we may snap to.
+ * @param {ol.Feature} feature Feature
+ * @param {boolean=} opt_unlisten Whether to unlisten to the geometry change
+ * or not. Defaults to `true`.
+ * @api
+ */
+ol.interaction.Snap.prototype.removeFeature = function(feature, opt_unlisten) {
+ var unlisten = opt_unlisten !== undefined ? opt_unlisten : true;
+ var feature_uid = goog.getUid(feature);
+ var extent = this.indexedFeaturesExtents_[feature_uid];
+ if (extent) {
+ var rBush = this.rBush_;
+ var i, nodesToRemove = [];
+ rBush.forEachInExtent(extent, function(node) {
+ if (feature === node.feature) {
+ nodesToRemove.push(node);
+ }
+ });
+ for (i = nodesToRemove.length - 1; i >= 0; --i) {
+ rBush.remove(nodesToRemove[i]);
+ }
+ if (unlisten) {
+ ol.Observable.unByKey(this.geometryModifyListenerKeys_[feature_uid]);
+ delete this.geometryModifyListenerKeys_[feature_uid];
+ }
+ }
+
+ if (unlisten) {
+ ol.Observable.unByKey(this.geometryChangeListenerKeys_[feature_uid]);
+ delete this.geometryChangeListenerKeys_[feature_uid];
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.Snap.prototype.setMap = function(map) {
+ var currentMap = this.getMap();
+ var keys = this.featuresListenerKeys_;
+ var features = this.getFeatures_();
+
+ if (currentMap) {
+ keys.forEach(ol.Observable.unByKey);
+ keys.length = 0;
+ features.forEach(this.forEachFeatureRemove_, this);
+ }
+ ol.interaction.Pointer.prototype.setMap.call(this, map);
+
+ if (map) {
+ if (this.features_) {
+ keys.push(
+ ol.events.listen(this.features_, ol.CollectionEventType.ADD,
+ this.handleFeatureAdd_, this),
+ ol.events.listen(this.features_, ol.CollectionEventType.REMOVE,
+ this.handleFeatureRemove_, this)
+ );
+ } else if (this.source_) {
+ keys.push(
+ ol.events.listen(this.source_, ol.source.VectorEventType.ADDFEATURE,
+ this.handleFeatureAdd_, this),
+ ol.events.listen(this.source_, ol.source.VectorEventType.REMOVEFEATURE,
+ this.handleFeatureRemove_, this)
+ );
+ }
+ features.forEach(this.forEachFeatureAdd_, this);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.Snap.prototype.shouldStopEvent = ol.functions.FALSE;
+
+
+/**
+ * @param {ol.Pixel} pixel Pixel
+ * @param {ol.Coordinate} pixelCoordinate Coordinate
+ * @param {ol.Map} map Map.
+ * @return {ol.SnapResultType} Snap result
+ */
+ol.interaction.Snap.prototype.snapTo = function(pixel, pixelCoordinate, map) {
+
+ var lowerLeft = map.getCoordinateFromPixel(
+ [pixel[0] - this.pixelTolerance_, pixel[1] + this.pixelTolerance_]);
+ var upperRight = map.getCoordinateFromPixel(
+ [pixel[0] + this.pixelTolerance_, pixel[1] - this.pixelTolerance_]);
+ var box = ol.extent.boundingExtent([lowerLeft, upperRight]);
+
+ var segments = this.rBush_.getInExtent(box);
+ var snappedToVertex = false;
+ var snapped = false;
+ var vertex = null;
+ var vertexPixel = null;
+ var dist, pixel1, pixel2, squaredDist1, squaredDist2;
+ if (segments.length > 0) {
+ this.pixelCoordinate_ = pixelCoordinate;
+ segments.sort(this.sortByDistance_);
+ var closestSegment = segments[0].segment;
+ if (this.vertex_ && !this.edge_) {
+ pixel1 = map.getPixelFromCoordinate(closestSegment[0]);
+ pixel2 = map.getPixelFromCoordinate(closestSegment[1]);
+ squaredDist1 = ol.coordinate.squaredDistance(pixel, pixel1);
+ squaredDist2 = ol.coordinate.squaredDistance(pixel, pixel2);
+ dist = Math.sqrt(Math.min(squaredDist1, squaredDist2));
+ snappedToVertex = dist <= this.pixelTolerance_;
+ if (snappedToVertex) {
+ snapped = true;
+ vertex = squaredDist1 > squaredDist2 ?
+ closestSegment[1] : closestSegment[0];
+ vertexPixel = map.getPixelFromCoordinate(vertex);
+ }
+ } else if (this.edge_) {
+ vertex = (ol.coordinate.closestOnSegment(pixelCoordinate,
+ closestSegment));
+ vertexPixel = map.getPixelFromCoordinate(vertex);
+ if (Math.sqrt(ol.coordinate.squaredDistance(pixel, vertexPixel)) <=
+ this.pixelTolerance_) {
+ snapped = true;
+ if (this.vertex_) {
+ pixel1 = map.getPixelFromCoordinate(closestSegment[0]);
+ pixel2 = map.getPixelFromCoordinate(closestSegment[1]);
+ squaredDist1 = ol.coordinate.squaredDistance(vertexPixel, pixel1);
+ squaredDist2 = ol.coordinate.squaredDistance(vertexPixel, pixel2);
+ dist = Math.sqrt(Math.min(squaredDist1, squaredDist2));
+ snappedToVertex = dist <= this.pixelTolerance_;
+ if (snappedToVertex) {
+ vertex = squaredDist1 > squaredDist2 ?
+ closestSegment[1] : closestSegment[0];
+ vertexPixel = map.getPixelFromCoordinate(vertex);
+ }
+ }
+ }
+ }
+ if (snapped) {
+ vertexPixel = [Math.round(vertexPixel[0]), Math.round(vertexPixel[1])];
+ }
+ }
+ return /** @type {ol.SnapResultType} */ ({
+ snapped: snapped,
+ vertex: vertex,
+ vertexPixel: vertexPixel
+ });
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @private
+ */
+ol.interaction.Snap.prototype.updateFeature_ = function(feature) {
+ this.removeFeature(feature, false);
+ this.addFeature(feature, false);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.GeometryCollection} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writeGeometryCollectionGeometry_ = function(feature, geometry) {
+ var i, geometries = geometry.getGeometriesArray();
+ for (i = 0; i < geometries.length; ++i) {
+ this.SEGMENT_WRITERS_[geometries[i].getType()].call(
+ this, feature, geometries[i]);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.LineString} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writeLineStringGeometry_ = function(feature, geometry) {
+ var coordinates = geometry.getCoordinates();
+ var i, ii, segment, segmentData;
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiLineString} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writeMultiLineStringGeometry_ = function(feature, geometry) {
+ var lines = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, segment, segmentData;
+ for (j = 0, jj = lines.length; j < jj; ++j) {
+ coordinates = lines[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiPoint} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writeMultiPointGeometry_ = function(feature, geometry) {
+ var points = geometry.getCoordinates();
+ var coordinates, i, ii, segmentData;
+ for (i = 0, ii = points.length; i < ii; ++i) {
+ coordinates = points[i];
+ segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: [coordinates, coordinates]
+ });
+ this.rBush_.insert(geometry.getExtent(), segmentData);
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.MultiPolygon} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writeMultiPolygonGeometry_ = function(feature, geometry) {
+ var polygons = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, k, kk, rings, segment, segmentData;
+ for (k = 0, kk = polygons.length; k < kk; ++k) {
+ rings = polygons[k];
+ for (j = 0, jj = rings.length; j < jj; ++j) {
+ coordinates = rings[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+ }
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.Point} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writePointGeometry_ = function(feature, geometry) {
+ var coordinates = geometry.getCoordinates();
+ var segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: [coordinates, coordinates]
+ });
+ this.rBush_.insert(geometry.getExtent(), segmentData);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature
+ * @param {ol.geom.Polygon} geometry Geometry.
+ * @private
+ */
+ol.interaction.Snap.prototype.writePolygonGeometry_ = function(feature, geometry) {
+ var rings = geometry.getCoordinates();
+ var coordinates, i, ii, j, jj, segment, segmentData;
+ for (j = 0, jj = rings.length; j < jj; ++j) {
+ coordinates = rings[j];
+ for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
+ segment = coordinates.slice(i, i + 2);
+ segmentData = /** @type {ol.SnapSegmentDataType} */ ({
+ feature: feature,
+ segment: segment
+ });
+ this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
+ }
+ }
+};
+
+
+/**
+ * Handle all pointer events events.
+ * @param {ol.MapBrowserEvent} evt A move event.
+ * @return {boolean} Pass the event to other interactions.
+ * @this {ol.interaction.Snap}
+ * @private
+ */
+ol.interaction.Snap.handleEvent_ = function(evt) {
+ var result = this.snapTo(evt.pixel, evt.coordinate, evt.map);
+ if (result.snapped) {
+ evt.coordinate = result.vertex.slice(0, 2);
+ evt.pixel = result.vertexPixel;
+ }
+ return ol.interaction.Pointer.handleEvent.call(this, evt);
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} evt Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.Snap}
+ * @private
+ */
+ol.interaction.Snap.handleUpEvent_ = function(evt) {
+ var featuresToUpdate = ol.object.getValues(this.pendingFeatures_);
+ if (featuresToUpdate.length) {
+ featuresToUpdate.forEach(this.updateFeature_, this);
+ this.pendingFeatures_ = {};
+ }
+ return false;
+};
+
+
+/**
+ * Sort segments by distance, helper function
+ * @param {ol.SnapSegmentDataType} a The first segment data.
+ * @param {ol.SnapSegmentDataType} b The second segment data.
+ * @return {number} The difference in distance.
+ * @this {ol.interaction.Snap}
+ */
+ol.interaction.Snap.sortByDistance = function(a, b) {
+ return ol.coordinate.squaredDistanceToSegment(
+ this.pixelCoordinate_, a.segment) -
+ ol.coordinate.squaredDistanceToSegment(
+ this.pixelCoordinate_, b.segment);
+};
+
+goog.provide('ol.interaction.Translate');
+goog.provide('ol.interaction.TranslateEvent');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.array');
+goog.require('ol.interaction.Pointer');
+
+
+/**
+ * @enum {string}
+ */
+ol.interaction.TranslateEventType = {
+ /**
+ * Triggered upon feature translation start.
+ * @event ol.interaction.TranslateEvent#translatestart
+ * @api
+ */
+ TRANSLATESTART: 'translatestart',
+ /**
+ * Triggered upon feature translation.
+ * @event ol.interaction.TranslateEvent#translating
+ * @api
+ */
+ TRANSLATING: 'translating',
+ /**
+ * Triggered upon feature translation end.
+ * @event ol.interaction.TranslateEvent#translateend
+ * @api
+ */
+ TRANSLATEEND: 'translateend'
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.interaction.Translate} instances are instances of
+ * this type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.interaction.TranslateEvent}
+ * @param {ol.interaction.TranslateEventType} type Type.
+ * @param {ol.Collection.<ol.Feature>} features The features translated.
+ * @param {ol.Coordinate} coordinate The event coordinate.
+ */
+ol.interaction.TranslateEvent = function(type, features, coordinate) {
+
+ ol.events.Event.call(this, type);
+
+ /**
+ * The features being translated.
+ * @type {ol.Collection.<ol.Feature>}
+ * @api
+ */
+ this.features = features;
+
+ /**
+ * The coordinate of the drag event.
+ * @const
+ * @type {ol.Coordinate}
+ * @api
+ */
+ this.coordinate = coordinate;
+};
+ol.inherits(ol.interaction.TranslateEvent, ol.events.Event);
+
+
+/**
+ * @classdesc
+ * Interaction for translating (moving) features.
+ *
+ * @constructor
+ * @extends {ol.interaction.Pointer}
+ * @fires ol.interaction.TranslateEvent
+ * @param {olx.interaction.TranslateOptions} options Options.
+ * @api
+ */
+ol.interaction.Translate = function(options) {
+ ol.interaction.Pointer.call(this, {
+ handleDownEvent: ol.interaction.Translate.handleDownEvent_,
+ handleDragEvent: ol.interaction.Translate.handleDragEvent_,
+ handleMoveEvent: ol.interaction.Translate.handleMoveEvent_,
+ handleUpEvent: ol.interaction.Translate.handleUpEvent_
+ });
+
+
+ /**
+ * @type {string|undefined}
+ * @private
+ */
+ this.previousCursor_ = undefined;
+
+
+ /**
+ * The last position we translated to.
+ * @type {ol.Coordinate}
+ * @private
+ */
+ this.lastCoordinate_ = null;
+
+
+ /**
+ * @type {ol.Collection.<ol.Feature>}
+ * @private
+ */
+ this.features_ = options.features !== undefined ? options.features : null;
+
+ var layerFilter;
+ if (options.layers) {
+ if (typeof options.layers === 'function') {
+ /**
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean} Include.
+ */
+ layerFilter = function(layer) {
+ goog.asserts.assertFunction(options.layers);
+ return options.layers(layer);
+ };
+ } else {
+ var layers = options.layers;
+ /**
+ * @param {ol.layer.Layer} layer Layer.
+ * @return {boolean} Include.
+ */
+ layerFilter = function(layer) {
+ return ol.array.includes(layers, layer);
+ };
+ }
+ } else {
+ layerFilter = ol.functions.TRUE;
+ }
+
+ /**
+ * @private
+ * @type {function(ol.layer.Layer): boolean}
+ */
+ this.layerFilter_ = layerFilter;
+
+ /**
+ * @type {ol.Feature}
+ * @private
+ */
+ this.lastFeature_ = null;
+};
+ol.inherits(ol.interaction.Translate, ol.interaction.Pointer);
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} event Event.
+ * @return {boolean} Start drag sequence?
+ * @this {ol.interaction.Translate}
+ * @private
+ */
+ol.interaction.Translate.handleDownEvent_ = function(event) {
+ this.lastFeature_ = this.featuresAtPixel_(event.pixel, event.map);
+ if (!this.lastCoordinate_ && this.lastFeature_) {
+ this.lastCoordinate_ = event.coordinate;
+ ol.interaction.Translate.handleMoveEvent_.call(this, event);
+ this.dispatchEvent(
+ new ol.interaction.TranslateEvent(
+ ol.interaction.TranslateEventType.TRANSLATESTART, this.features_,
+ event.coordinate));
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} event Event.
+ * @return {boolean} Stop drag sequence?
+ * @this {ol.interaction.Translate}
+ * @private
+ */
+ol.interaction.Translate.handleUpEvent_ = function(event) {
+ if (this.lastCoordinate_) {
+ this.lastCoordinate_ = null;
+ ol.interaction.Translate.handleMoveEvent_.call(this, event);
+ this.dispatchEvent(
+ new ol.interaction.TranslateEvent(
+ ol.interaction.TranslateEventType.TRANSLATEEND, this.features_,
+ event.coordinate));
+ return true;
+ }
+ return false;
+};
+
+
+/**
+ * @param {ol.MapBrowserPointerEvent} event Event.
+ * @this {ol.interaction.Translate}
+ * @private
+ */
+ol.interaction.Translate.handleDragEvent_ = function(event) {
+ if (this.lastCoordinate_) {
+ var newCoordinate = event.coordinate;
+ var deltaX = newCoordinate[0] - this.lastCoordinate_[0];
+ var deltaY = newCoordinate[1] - this.lastCoordinate_[1];
+
+ if (this.features_) {
+ this.features_.forEach(function(feature) {
+ var geom = feature.getGeometry();
+ geom.translate(deltaX, deltaY);
+ feature.setGeometry(geom);
+ });
+ } else if (this.lastFeature_) {
+ var geom = this.lastFeature_.getGeometry();
+ geom.translate(deltaX, deltaY);
+ this.lastFeature_.setGeometry(geom);
+ }
+
+ this.lastCoordinate_ = newCoordinate;
+ this.dispatchEvent(
+ new ol.interaction.TranslateEvent(
+ ol.interaction.TranslateEventType.TRANSLATING, this.features_,
+ newCoordinate));
+ }
+};
+
+
+/**
+ * @param {ol.MapBrowserEvent} event Event.
+ * @this {ol.interaction.Translate}
+ * @private
+ */
+ol.interaction.Translate.handleMoveEvent_ = function(event) {
+ var elem = event.map.getTargetElement();
+ var intersectingFeature = event.map.forEachFeatureAtPixel(event.pixel,
+ function(feature) {
+ return feature;
+ });
+
+ if (intersectingFeature) {
+ var isSelected = false;
+
+ if (this.features_ &&
+ ol.array.includes(this.features_.getArray(), intersectingFeature)) {
+ isSelected = true;
+ }
+
+ this.previousCursor_ = elem.style.cursor;
+
+ // WebKit browsers don't support the grab icons without a prefix
+ elem.style.cursor = this.lastCoordinate_ ?
+ '-webkit-grabbing' : (isSelected ? '-webkit-grab' : 'pointer');
+
+ // Thankfully, attempting to set the standard ones will silently fail,
+ // keeping the prefixed icons
+ elem.style.cursor = !this.lastCoordinate_ ?
+ 'grabbing' : (isSelected ? 'grab' : 'pointer');
+
+ } else {
+ elem.style.cursor = this.previousCursor_ !== undefined ?
+ this.previousCursor_ : '';
+ this.previousCursor_ = undefined;
+ }
+};
+
+
+/**
+ * Tests to see if the given coordinates intersects any of our selected
+ * features.
+ * @param {ol.Pixel} pixel Pixel coordinate to test for intersection.
+ * @param {ol.Map} map Map to test the intersection on.
+ * @return {ol.Feature} Returns the feature found at the specified pixel
+ * coordinates.
+ * @private
+ */
+ol.interaction.Translate.prototype.featuresAtPixel_ = function(pixel, map) {
+ var found = null;
+
+ var intersectingFeature = map.forEachFeatureAtPixel(pixel,
+ function(feature) {
+ return feature;
+ }, this, this.layerFilter_);
+
+ if (this.features_ &&
+ ol.array.includes(this.features_.getArray(), intersectingFeature)) {
+ found = intersectingFeature;
+ }
+
+ return found;
+};
+
+goog.provide('ol.layer.Heatmap');
+
+goog.require('goog.asserts');
+goog.require('ol.events');
+goog.require('ol');
+goog.require('ol.Object');
+goog.require('ol.dom');
+goog.require('ol.layer.Vector');
+goog.require('ol.math');
+goog.require('ol.object');
+goog.require('ol.render.EventType');
+goog.require('ol.style.Icon');
+goog.require('ol.style.Style');
+
+
+/**
+ * @enum {string}
+ */
+ol.layer.HeatmapLayerProperty = {
+ BLUR: 'blur',
+ GRADIENT: 'gradient',
+ RADIUS: 'radius'
+};
+
+
+/**
+ * @classdesc
+ * Layer for rendering vector data as a heatmap.
+ * Note that any property set in the options is set as a {@link ol.Object}
+ * property on the layer object; for example, setting `title: 'My Title'` in the
+ * options means that `title` is observable, and has get/set accessors.
+ *
+ * @constructor
+ * @extends {ol.layer.Vector}
+ * @fires ol.render.Event
+ * @param {olx.layer.HeatmapOptions=} opt_options Options.
+ * @api
+ */
+ol.layer.Heatmap = function(opt_options) {
+ var options = opt_options ? opt_options : {};
+
+ var baseOptions = ol.object.assign({}, options);
+
+ delete baseOptions.gradient;
+ delete baseOptions.radius;
+ delete baseOptions.blur;
+ delete baseOptions.shadow;
+ delete baseOptions.weight;
+ ol.layer.Vector.call(this, /** @type {olx.layer.VectorOptions} */ (baseOptions));
+
+ /**
+ * @private
+ * @type {Uint8ClampedArray}
+ */
+ this.gradient_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.shadow_ = options.shadow !== undefined ? options.shadow : 250;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.circleImage_ = undefined;
+
+ /**
+ * @private
+ * @type {Array.<Array.<ol.style.Style>>}
+ */
+ this.styleCache_ = null;
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.layer.HeatmapLayerProperty.GRADIENT),
+ this.handleGradientChanged_, this);
+
+ this.setGradient(options.gradient ?
+ options.gradient : ol.layer.Heatmap.DEFAULT_GRADIENT);
+
+ this.setBlur(options.blur !== undefined ? options.blur : 15);
+
+ this.setRadius(options.radius !== undefined ? options.radius : 8);
+
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.layer.HeatmapLayerProperty.BLUR),
+ this.handleStyleChanged_, this);
+ ol.events.listen(this,
+ ol.Object.getChangeEventType(ol.layer.HeatmapLayerProperty.RADIUS),
+ this.handleStyleChanged_, this);
+
+ this.handleStyleChanged_();
+
+ var weight = options.weight ? options.weight : 'weight';
+ var weightFunction;
+ if (typeof weight === 'string') {
+ weightFunction = function(feature) {
+ return feature.get(weight);
+ };
+ } else {
+ weightFunction = weight;
+ }
+ goog.asserts.assert(typeof weightFunction === 'function',
+ 'weightFunction should be a function');
+
+ this.setStyle(function(feature, resolution) {
+ goog.asserts.assert(this.styleCache_, 'this.styleCache_ expected');
+ goog.asserts.assert(this.circleImage_ !== undefined,
+ 'this.circleImage_ should be defined');
+ var weight = weightFunction(feature);
+ var opacity = weight !== undefined ? ol.math.clamp(weight, 0, 1) : 1;
+ // cast to 8 bits
+ var index = (255 * opacity) | 0;
+ var style = this.styleCache_[index];
+ if (!style) {
+ style = [
+ new ol.style.Style({
+ image: new ol.style.Icon({
+ opacity: opacity,
+ src: this.circleImage_
+ })
+ })
+ ];
+ this.styleCache_[index] = style;
+ }
+ return style;
+ }.bind(this));
+
+ // For performance reasons, don't sort the features before rendering.
+ // The render order is not relevant for a heatmap representation.
+ this.setRenderOrder(null);
+
+ ol.events.listen(this, ol.render.EventType.RENDER, this.handleRender_, this);
+
+};
+ol.inherits(ol.layer.Heatmap, ol.layer.Vector);
+
+
+/**
+ * @const
+ * @type {Array.<string>}
+ */
+ol.layer.Heatmap.DEFAULT_GRADIENT = ['#00f', '#0ff', '#0f0', '#ff0', '#f00'];
+
+
+/**
+ * @param {Array.<string>} colors A list of colored.
+ * @return {Uint8ClampedArray} An array.
+ * @private
+ */
+ol.layer.Heatmap.createGradient_ = function(colors) {
+ var width = 1;
+ var height = 256;
+ var context = ol.dom.createCanvasContext2D(width, height);
+
+ var gradient = context.createLinearGradient(0, 0, width, height);
+ var step = 1 / (colors.length - 1);
+ for (var i = 0, ii = colors.length; i < ii; ++i) {
+ gradient.addColorStop(i * step, colors[i]);
+ }
+
+ context.fillStyle = gradient;
+ context.fillRect(0, 0, width, height);
+
+ return context.getImageData(0, 0, width, height).data;
+};
+
+
+/**
+ * @return {string} Data URL for a circle.
+ * @private
+ */
+ol.layer.Heatmap.prototype.createCircle_ = function() {
+ var radius = this.getRadius();
+ var blur = this.getBlur();
+ goog.asserts.assert(radius !== undefined && blur !== undefined,
+ 'radius and blur should be defined');
+ var halfSize = radius + blur + 1;
+ var size = 2 * halfSize;
+ var context = ol.dom.createCanvasContext2D(size, size);
+ context.shadowOffsetX = context.shadowOffsetY = this.shadow_;
+ context.shadowBlur = blur;
+ context.shadowColor = '#000';
+ context.beginPath();
+ var center = halfSize - this.shadow_;
+ context.arc(center, center, radius, 0, Math.PI * 2, true);
+ context.fill();
+ return context.canvas.toDataURL();
+};
+
+
+/**
+ * Return the blur size in pixels.
+ * @return {number} Blur size in pixels.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.getBlur = function() {
+ return /** @type {number} */ (this.get(ol.layer.HeatmapLayerProperty.BLUR));
+};
+
+
+/**
+ * Return the gradient colors as array of strings.
+ * @return {Array.<string>} Colors.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.getGradient = function() {
+ return /** @type {Array.<string>} */ (
+ this.get(ol.layer.HeatmapLayerProperty.GRADIENT));
+};
+
+
+/**
+ * Return the size of the radius in pixels.
+ * @return {number} Radius size in pixel.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.getRadius = function() {
+ return /** @type {number} */ (this.get(ol.layer.HeatmapLayerProperty.RADIUS));
+};
+
+
+/**
+ * @private
+ */
+ol.layer.Heatmap.prototype.handleGradientChanged_ = function() {
+ this.gradient_ = ol.layer.Heatmap.createGradient_(this.getGradient());
+};
+
+
+/**
+ * @private
+ */
+ol.layer.Heatmap.prototype.handleStyleChanged_ = function() {
+ this.circleImage_ = this.createCircle_();
+ this.styleCache_ = new Array(256);
+ this.changed();
+};
+
+
+/**
+ * @param {ol.render.Event} event Post compose event
+ * @private
+ */
+ol.layer.Heatmap.prototype.handleRender_ = function(event) {
+ goog.asserts.assert(event.type == ol.render.EventType.RENDER,
+ 'event.type should be RENDER');
+ goog.asserts.assert(this.gradient_, 'this.gradient_ expected');
+ var context = event.context;
+ var canvas = context.canvas;
+ var image = context.getImageData(0, 0, canvas.width, canvas.height);
+ var view8 = image.data;
+ var i, ii, alpha;
+ for (i = 0, ii = view8.length; i < ii; i += 4) {
+ alpha = view8[i + 3] * 4;
+ if (alpha) {
+ view8[i] = this.gradient_[alpha];
+ view8[i + 1] = this.gradient_[alpha + 1];
+ view8[i + 2] = this.gradient_[alpha + 2];
+ }
+ }
+ context.putImageData(image, 0, 0);
+};
+
+
+/**
+ * Set the blur size in pixels.
+ * @param {number} blur Blur size in pixels.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.setBlur = function(blur) {
+ this.set(ol.layer.HeatmapLayerProperty.BLUR, blur);
+};
+
+
+/**
+ * Set the gradient colors as array of strings.
+ * @param {Array.<string>} colors Gradient.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.setGradient = function(colors) {
+ this.set(ol.layer.HeatmapLayerProperty.GRADIENT, colors);
+};
+
+
+/**
+ * Set the size of the radius in pixels.
+ * @param {number} radius Radius size in pixel.
+ * @api
+ * @observable
+ */
+ol.layer.Heatmap.prototype.setRadius = function(radius) {
+ this.set(ol.layer.HeatmapLayerProperty.RADIUS, radius);
+};
+
+goog.provide('ol.net');
+
+
+/**
+ * Simple JSONP helper. Supports error callbacks and a custom callback param.
+ * The error callback will be called when no JSONP is executed after 10 seconds.
+ *
+ * @param {string} url Request url. A 'callback' query parameter will be
+ * appended.
+ * @param {Function} callback Callback on success.
+ * @param {function()=} opt_errback Callback on error.
+ * @param {string=} opt_callbackParam Custom query parameter for the JSONP
+ * callback. Default is 'callback'.
+ */
+ol.net.jsonp = function(url, callback, opt_errback, opt_callbackParam) {
+ var script = ol.global.document.createElement('script');
+ var key = 'olc_' + goog.getUid(callback);
+ function cleanup() {
+ delete ol.global[key];
+ script.parentNode.removeChild(script);
+ }
+ script.async = true;
+ script.src = url + (url.indexOf('?') == -1 ? '?' : '&') +
+ (opt_callbackParam || 'callback') + '=' + key;
+ var timer = ol.global.setTimeout(function() {
+ cleanup();
+ if (opt_errback) {
+ opt_errback();
+ }
+ }, 10000);
+ ol.global[key] = function(data) {
+ ol.global.clearTimeout(timer);
+ cleanup();
+ callback(data);
+ };
+ ol.global.document.getElementsByTagName('head')[0].appendChild(script);
+};
+
+goog.provide('ol.render');
+
+goog.require('goog.vec.Mat4');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.vec.Mat4');
+
+
+/**
+ * Binds a Canvas Immediate API to a canvas context, to allow drawing geometries
+ * to the context's canvas.
+ *
+ * The units for geometry coordinates are css pixels relative to the top left
+ * corner of the canvas element.
+ * ```js
+ * var canvas = document.createElement('canvas');
+ * var render = ol.render.toContext(canvas.getContext('2d'),
+ * { size: [100, 100] });
+ * render.setFillStrokeStyle(new ol.style.Fill({ color: blue }));
+ * render.drawPolygon(
+ * new ol.geom.Polygon([[[0, 0], [100, 100], [100, 0], [0, 0]]]));
+ * ```
+ *
+ * @param {CanvasRenderingContext2D} context Canvas context.
+ * @param {olx.render.ToContextOptions=} opt_options Options.
+ * @return {ol.render.canvas.Immediate} Canvas Immediate.
+ * @api
+ */
+ol.render.toContext = function(context, opt_options) {
+ var canvas = context.canvas;
+ var options = opt_options ? opt_options : {};
+ var pixelRatio = options.pixelRatio || ol.has.DEVICE_PIXEL_RATIO;
+ var size = options.size;
+ if (size) {
+ canvas.width = size[0] * pixelRatio;
+ canvas.height = size[1] * pixelRatio;
+ canvas.style.width = size[0] + 'px';
+ canvas.style.height = size[1] + 'px';
+ }
+ var extent = [0, 0, canvas.width, canvas.height];
+ var transform = ol.vec.Mat4.makeTransform2D(goog.vec.Mat4.createNumber(),
+ 0, 0, pixelRatio, pixelRatio, 0, 0, 0);
+ return new ol.render.canvas.Immediate(context, pixelRatio, extent, transform,
+ 0);
+};
+
+goog.provide('ol.reproj.Tile');
+
+goog.require('goog.asserts');
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.math');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.reproj');
+goog.require('ol.reproj.Triangulation');
+
+
+/**
+ * @classdesc
+ * Class encapsulating single reprojected tile.
+ * See {@link ol.source.TileImage}.
+ *
+ * @constructor
+ * @extends {ol.Tile}
+ * @param {ol.proj.Projection} sourceProj Source projection.
+ * @param {ol.tilegrid.TileGrid} sourceTileGrid Source tile grid.
+ * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {ol.tilegrid.TileGrid} targetTileGrid Target tile grid.
+ * @param {ol.TileCoord} tileCoord Coordinate of the tile.
+ * @param {ol.TileCoord} wrappedTileCoord Coordinate of the tile wrapped in X.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {number} gutter Gutter of the source tiles.
+ * @param {ol.ReprojTileFunctionType} getTileFunction
+ * Function returning source tiles (z, x, y, pixelRatio).
+ * @param {number=} opt_errorThreshold Acceptable reprojection error (in px).
+ * @param {boolean=} opt_renderEdges Render reprojection edges.
+ */
+ol.reproj.Tile = function(sourceProj, sourceTileGrid,
+ targetProj, targetTileGrid, tileCoord, wrappedTileCoord,
+ pixelRatio, gutter, getTileFunction,
+ opt_errorThreshold,
+ opt_renderEdges) {
+ ol.Tile.call(this, tileCoord, ol.TileState.IDLE);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderEdges_ = opt_renderEdges !== undefined ? opt_renderEdges : false;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.pixelRatio_ = pixelRatio;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.gutter_ = gutter;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = null;
+
+ /**
+ * @private
+ * @type {Object.<number, HTMLCanvasElement>}
+ */
+ this.canvasByContext_ = {};
+
+ /**
+ * @private
+ * @type {ol.tilegrid.TileGrid}
+ */
+ this.sourceTileGrid_ = sourceTileGrid;
+
+ /**
+ * @private
+ * @type {ol.tilegrid.TileGrid}
+ */
+ this.targetTileGrid_ = targetTileGrid;
+
+ /**
+ * @private
+ * @type {ol.TileCoord}
+ */
+ this.wrappedTileCoord_ = wrappedTileCoord ? wrappedTileCoord : tileCoord;
+
+ /**
+ * @private
+ * @type {!Array.<ol.Tile>}
+ */
+ this.sourceTiles_ = [];
+
+ /**
+ * @private
+ * @type {Array.<ol.EventsKey>}
+ */
+ this.sourcesListenerKeys_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.sourceZ_ = 0;
+
+ var targetExtent = targetTileGrid.getTileCoordExtent(this.wrappedTileCoord_);
+ var maxTargetExtent = this.targetTileGrid_.getExtent();
+ var maxSourceExtent = this.sourceTileGrid_.getExtent();
+
+ var limitedTargetExtent = maxTargetExtent ?
+ ol.extent.getIntersection(targetExtent, maxTargetExtent) : targetExtent;
+
+ if (ol.extent.getArea(limitedTargetExtent) === 0) {
+ // Tile is completely outside range -> EMPTY
+ // TODO: is it actually correct that the source even creates the tile ?
+ this.state = ol.TileState.EMPTY;
+ return;
+ }
+
+ var sourceProjExtent = sourceProj.getExtent();
+ if (sourceProjExtent) {
+ if (!maxSourceExtent) {
+ maxSourceExtent = sourceProjExtent;
+ } else {
+ maxSourceExtent = ol.extent.getIntersection(
+ maxSourceExtent, sourceProjExtent);
+ }
+ }
+
+ var targetResolution = targetTileGrid.getResolution(
+ this.wrappedTileCoord_[0]);
+
+ var targetCenter = ol.extent.getCenter(limitedTargetExtent);
+ var sourceResolution = ol.reproj.calculateSourceResolution(
+ sourceProj, targetProj, targetCenter, targetResolution);
+
+ if (!isFinite(sourceResolution) || sourceResolution <= 0) {
+ // invalid sourceResolution -> EMPTY
+ // probably edges of the projections when no extent is defined
+ this.state = ol.TileState.EMPTY;
+ return;
+ }
+
+ var errorThresholdInPixels = opt_errorThreshold !== undefined ?
+ opt_errorThreshold : ol.DEFAULT_RASTER_REPROJECTION_ERROR_THRESHOLD;
+
+ /**
+ * @private
+ * @type {!ol.reproj.Triangulation}
+ */
+ this.triangulation_ = new ol.reproj.Triangulation(
+ sourceProj, targetProj, limitedTargetExtent, maxSourceExtent,
+ sourceResolution * errorThresholdInPixels);
+
+ if (this.triangulation_.getTriangles().length === 0) {
+ // no valid triangles -> EMPTY
+ this.state = ol.TileState.EMPTY;
+ return;
+ }
+
+ this.sourceZ_ = sourceTileGrid.getZForResolution(sourceResolution);
+ var sourceExtent = this.triangulation_.calculateSourceExtent();
+
+ if (maxSourceExtent) {
+ if (sourceProj.canWrapX()) {
+ sourceExtent[1] = ol.math.clamp(
+ sourceExtent[1], maxSourceExtent[1], maxSourceExtent[3]);
+ sourceExtent[3] = ol.math.clamp(
+ sourceExtent[3], maxSourceExtent[1], maxSourceExtent[3]);
+ } else {
+ sourceExtent = ol.extent.getIntersection(sourceExtent, maxSourceExtent);
+ }
+ }
+
+ if (!ol.extent.getArea(sourceExtent)) {
+ this.state = ol.TileState.EMPTY;
+ } else {
+ var sourceRange = sourceTileGrid.getTileRangeForExtentAndZ(
+ sourceExtent, this.sourceZ_);
+
+ var tilesRequired = sourceRange.getWidth() * sourceRange.getHeight();
+ if (!goog.asserts.assert(
+ tilesRequired < ol.RASTER_REPROJECTION_MAX_SOURCE_TILES,
+ 'reasonable number of tiles is required')) {
+ this.state = ol.TileState.ERROR;
+ return;
+ }
+ for (var srcX = sourceRange.minX; srcX <= sourceRange.maxX; srcX++) {
+ for (var srcY = sourceRange.minY; srcY <= sourceRange.maxY; srcY++) {
+ var tile = getTileFunction(this.sourceZ_, srcX, srcY, pixelRatio);
+ if (tile) {
+ this.sourceTiles_.push(tile);
+ }
+ }
+ }
+
+ if (this.sourceTiles_.length === 0) {
+ this.state = ol.TileState.EMPTY;
+ }
+ }
+};
+ol.inherits(ol.reproj.Tile, ol.Tile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Tile.prototype.disposeInternal = function() {
+ if (this.state == ol.TileState.LOADING) {
+ this.unlistenSources_();
+ }
+ ol.Tile.prototype.disposeInternal.call(this);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Tile.prototype.getImage = function(opt_context) {
+ if (opt_context !== undefined) {
+ var image;
+ var key = goog.getUid(opt_context);
+ if (key in this.canvasByContext_) {
+ return this.canvasByContext_[key];
+ } else if (ol.object.isEmpty(this.canvasByContext_)) {
+ image = this.canvas_;
+ } else {
+ image = /** @type {HTMLCanvasElement} */ (this.canvas_.cloneNode(false));
+ }
+ this.canvasByContext_[key] = image;
+ return image;
+ } else {
+ return this.canvas_;
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.reproj.Tile.prototype.reproject_ = function() {
+ var sources = [];
+ this.sourceTiles_.forEach(function(tile, i, arr) {
+ if (tile && tile.getState() == ol.TileState.LOADED) {
+ sources.push({
+ extent: this.sourceTileGrid_.getTileCoordExtent(tile.tileCoord),
+ image: tile.getImage()
+ });
+ }
+ }, this);
+ this.sourceTiles_.length = 0;
+
+ if (sources.length === 0) {
+ this.state = ol.TileState.ERROR;
+ } else {
+ var z = this.wrappedTileCoord_[0];
+ var size = this.targetTileGrid_.getTileSize(z);
+ var width = goog.isNumber(size) ? size : size[0];
+ var height = goog.isNumber(size) ? size : size[1];
+ var targetResolution = this.targetTileGrid_.getResolution(z);
+ var sourceResolution = this.sourceTileGrid_.getResolution(this.sourceZ_);
+
+ var targetExtent = this.targetTileGrid_.getTileCoordExtent(
+ this.wrappedTileCoord_);
+ this.canvas_ = ol.reproj.render(width, height, this.pixelRatio_,
+ sourceResolution, this.sourceTileGrid_.getExtent(),
+ targetResolution, targetExtent, this.triangulation_, sources,
+ this.gutter_, this.renderEdges_);
+
+ this.state = ol.TileState.LOADED;
+ }
+ this.changed();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.reproj.Tile.prototype.load = function() {
+ if (this.state == ol.TileState.IDLE) {
+ this.state = ol.TileState.LOADING;
+ this.changed();
+
+ var leftToLoad = 0;
+
+ goog.asserts.assert(!this.sourcesListenerKeys_,
+ 'this.sourcesListenerKeys_ should be null');
+
+ this.sourcesListenerKeys_ = [];
+ this.sourceTiles_.forEach(function(tile, i, arr) {
+ var state = tile.getState();
+ if (state == ol.TileState.IDLE || state == ol.TileState.LOADING) {
+ leftToLoad++;
+
+ var sourceListenKey;
+ sourceListenKey = ol.events.listen(tile, ol.events.EventType.CHANGE,
+ function(e) {
+ var state = tile.getState();
+ if (state == ol.TileState.LOADED ||
+ state == ol.TileState.ERROR ||
+ state == ol.TileState.EMPTY) {
+ ol.events.unlistenByKey(sourceListenKey);
+ leftToLoad--;
+ goog.asserts.assert(leftToLoad >= 0,
+ 'leftToLoad should not be negative');
+ if (leftToLoad === 0) {
+ this.unlistenSources_();
+ this.reproject_();
+ }
+ }
+ }, this);
+ this.sourcesListenerKeys_.push(sourceListenKey);
+ }
+ }, this);
+
+ this.sourceTiles_.forEach(function(tile, i, arr) {
+ var state = tile.getState();
+ if (state == ol.TileState.IDLE) {
+ tile.load();
+ }
+ });
+
+ if (leftToLoad === 0) {
+ ol.global.setTimeout(this.reproject_.bind(this), 0);
+ }
+ }
+};
+
+
+/**
+ * @private
+ */
+ol.reproj.Tile.prototype.unlistenSources_ = function() {
+ goog.asserts.assert(this.sourcesListenerKeys_,
+ 'this.sourcesListenerKeys_ should not be null');
+ this.sourcesListenerKeys_.forEach(ol.events.unlistenByKey);
+ this.sourcesListenerKeys_ = null;
+};
+
+goog.provide('ol.source.TileImage');
+
+goog.require('goog.asserts');
+goog.require('ol.ImageTile');
+goog.require('ol.TileCache');
+goog.require('ol.TileState');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.proj');
+goog.require('ol.reproj.Tile');
+goog.require('ol.source.UrlTile');
+
+
+/**
+ * @classdesc
+ * Base class for sources providing images divided into a tile grid.
+ *
+ * @constructor
+ * @fires ol.source.TileEvent
+ * @extends {ol.source.UrlTile}
+ * @param {olx.source.TileImageOptions} options Image tile options.
+ * @api
+ */
+ol.source.TileImage = function(options) {
+
+ ol.source.UrlTile.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ extent: options.extent,
+ logo: options.logo,
+ opaque: options.opaque,
+ projection: options.projection,
+ state: options.state,
+ tileGrid: options.tileGrid,
+ tileLoadFunction: options.tileLoadFunction ?
+ options.tileLoadFunction : ol.source.TileImage.defaultTileLoadFunction,
+ tilePixelRatio: options.tilePixelRatio,
+ tileUrlFunction: options.tileUrlFunction,
+ url: options.url,
+ urls: options.urls,
+ wrapX: options.wrapX
+ });
+
+ /**
+ * @protected
+ * @type {?string}
+ */
+ this.crossOrigin =
+ options.crossOrigin !== undefined ? options.crossOrigin : null;
+
+ /**
+ * @protected
+ * @type {function(new: ol.ImageTile, ol.TileCoord, ol.TileState, string,
+ * ?string, ol.TileLoadFunctionType)}
+ */
+ this.tileClass = options.tileClass !== undefined ?
+ options.tileClass : ol.ImageTile;
+
+ /**
+ * @protected
+ * @type {Object.<string, ol.TileCache>}
+ */
+ this.tileCacheForProjection = {};
+
+ /**
+ * @protected
+ * @type {Object.<string, ol.tilegrid.TileGrid>}
+ */
+ this.tileGridForProjection = {};
+
+ /**
+ * @private
+ * @type {number|undefined}
+ */
+ this.reprojectionErrorThreshold_ = options.reprojectionErrorThreshold;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.renderReprojectionEdges_ = false;
+};
+ol.inherits(ol.source.TileImage, ol.source.UrlTile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.canExpireCache = function() {
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ return ol.source.UrlTile.prototype.canExpireCache.call(this);
+ }
+ if (this.tileCache.canExpireCache()) {
+ return true;
+ } else {
+ for (var key in this.tileCacheForProjection) {
+ if (this.tileCacheForProjection[key].canExpireCache()) {
+ return true;
+ }
+ }
+ }
+ return false;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.expireCache = function(projection, usedTiles) {
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ ol.source.UrlTile.prototype.expireCache.call(this, projection, usedTiles);
+ return;
+ }
+ var usedTileCache = this.getTileCacheForProjection(projection);
+
+ this.tileCache.expireCache(this.tileCache == usedTileCache ? usedTiles : {});
+ for (var id in this.tileCacheForProjection) {
+ var tileCache = this.tileCacheForProjection[id];
+ tileCache.expireCache(tileCache == usedTileCache ? usedTiles : {});
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.getGutter = function(projection) {
+ if (ol.ENABLE_RASTER_REPROJECTION &&
+ this.getProjection() && projection &&
+ !ol.proj.equivalent(this.getProjection(), projection)) {
+ return 0;
+ } else {
+ return this.getGutterInternal();
+ }
+};
+
+
+/**
+ * @protected
+ * @return {number} Gutter.
+ */
+ol.source.TileImage.prototype.getGutterInternal = function() {
+ return 0;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.getOpaque = function(projection) {
+ if (ol.ENABLE_RASTER_REPROJECTION &&
+ this.getProjection() && projection &&
+ !ol.proj.equivalent(this.getProjection(), projection)) {
+ return false;
+ } else {
+ return ol.source.UrlTile.prototype.getOpaque.call(this, projection);
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.getTileGridForProjection = function(projection) {
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ return ol.source.UrlTile.prototype.getTileGridForProjection.call(this, projection);
+ }
+ var thisProj = this.getProjection();
+ if (this.tileGrid &&
+ (!thisProj || ol.proj.equivalent(thisProj, projection))) {
+ return this.tileGrid;
+ } else {
+ var projKey = goog.getUid(projection).toString();
+ if (!(projKey in this.tileGridForProjection)) {
+ this.tileGridForProjection[projKey] =
+ ol.tilegrid.getForProjection(projection);
+ }
+ return this.tileGridForProjection[projKey];
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.getTileCacheForProjection = function(projection) {
+ if (!ol.ENABLE_RASTER_REPROJECTION) {
+ return ol.source.UrlTile.prototype.getTileCacheForProjection.call(this, projection);
+ }
+ var thisProj = this.getProjection();
+ if (!thisProj || ol.proj.equivalent(thisProj, projection)) {
+ return this.tileCache;
+ } else {
+ var projKey = goog.getUid(projection).toString();
+ if (!(projKey in this.tileCacheForProjection)) {
+ this.tileCacheForProjection[projKey] = new ol.TileCache();
+ }
+ return this.tileCacheForProjection[projKey];
+ }
+};
+
+
+/**
+ * @param {number} z Tile coordinate z.
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {string} key The key set on the tile.
+ * @return {ol.Tile} Tile.
+ * @private
+ */
+ol.source.TileImage.prototype.createTile_ = function(z, x, y, pixelRatio, projection, key) {
+ var tileCoord = [z, x, y];
+ var urlTileCoord = this.getTileCoordForTileUrlFunction(
+ tileCoord, projection);
+ var tileUrl = urlTileCoord ?
+ this.tileUrlFunction(urlTileCoord, pixelRatio, projection) : undefined;
+ var tile = new this.tileClass(
+ tileCoord,
+ tileUrl !== undefined ? ol.TileState.IDLE : ol.TileState.EMPTY,
+ tileUrl !== undefined ? tileUrl : '',
+ this.crossOrigin,
+ this.tileLoadFunction);
+ tile.key = key;
+ ol.events.listen(tile, ol.events.EventType.CHANGE,
+ this.handleTileChange, this);
+ return tile;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileImage.prototype.getTile = function(z, x, y, pixelRatio, projection) {
+ if (!ol.ENABLE_RASTER_REPROJECTION ||
+ !this.getProjection() ||
+ !projection ||
+ ol.proj.equivalent(this.getProjection(), projection)) {
+ return this.getTileInternal(z, x, y, pixelRatio, projection);
+ } else {
+ var cache = this.getTileCacheForProjection(projection);
+ var tileCoord = [z, x, y];
+ var tileCoordKey = this.getKeyZXY.apply(this, tileCoord);
+ if (cache.containsKey(tileCoordKey)) {
+ return /** @type {!ol.Tile} */ (cache.get(tileCoordKey));
+ } else {
+ var sourceProjection = this.getProjection();
+ var sourceTileGrid = this.getTileGridForProjection(sourceProjection);
+ var targetTileGrid = this.getTileGridForProjection(projection);
+ var wrappedTileCoord =
+ this.getTileCoordForTileUrlFunction(tileCoord, projection);
+ var tile = new ol.reproj.Tile(
+ sourceProjection, sourceTileGrid,
+ projection, targetTileGrid,
+ tileCoord, wrappedTileCoord, this.getTilePixelRatio(pixelRatio),
+ this.getGutterInternal(),
+ function(z, x, y, pixelRatio) {
+ return this.getTileInternal(z, x, y, pixelRatio, sourceProjection);
+ }.bind(this), this.reprojectionErrorThreshold_,
+ this.renderReprojectionEdges_);
+
+ cache.set(tileCoordKey, tile);
+ return tile;
+ }
+ }
+};
+
+
+/**
+ * @param {number} z Tile coordinate z.
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {!ol.Tile} Tile.
+ * @protected
+ */
+ol.source.TileImage.prototype.getTileInternal = function(z, x, y, pixelRatio, projection) {
+ var /** @type {ol.Tile} */ tile = null;
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ var key = this.getKey();
+ if (!this.tileCache.containsKey(tileCoordKey)) {
+ goog.asserts.assert(projection, 'argument projection is truthy');
+ tile = this.createTile_(z, x, y, pixelRatio, projection, key);
+ this.tileCache.set(tileCoordKey, tile);
+ } else {
+ tile = /** @type {!ol.Tile} */ (this.tileCache.get(tileCoordKey));
+ if (tile.key != key) {
+ // The source's params changed. If the tile has an interim tile and if we
+ // can use it then we use it. Otherwise we create a new tile. In both
+ // cases we attempt to assign an interim tile to the new tile.
+ var /** @type {ol.Tile} */ interimTile = tile;
+ if (tile.interimTile && tile.interimTile.key == key) {
+ goog.asserts.assert(tile.interimTile.getState() == ol.TileState.LOADED);
+ goog.asserts.assert(tile.interimTile.interimTile === null);
+ tile = tile.interimTile;
+ if (interimTile.getState() == ol.TileState.LOADED) {
+ tile.interimTile = interimTile;
+ }
+ } else {
+ tile = this.createTile_(z, x, y, pixelRatio, projection, key);
+ if (interimTile.getState() == ol.TileState.LOADED) {
+ tile.interimTile = interimTile;
+ } else if (interimTile.interimTile &&
+ interimTile.interimTile.getState() == ol.TileState.LOADED) {
+ tile.interimTile = interimTile.interimTile;
+ interimTile.interimTile = null;
+ }
+ }
+ if (tile.interimTile) {
+ tile.interimTile.interimTile = null;
+ }
+ this.tileCache.replace(tileCoordKey, tile);
+ }
+ }
+ goog.asserts.assert(tile);
+ return tile;
+};
+
+
+/**
+ * Sets whether to render reprojection edges or not (usually for debugging).
+ * @param {boolean} render Render the edges.
+ * @api
+ */
+ol.source.TileImage.prototype.setRenderReprojectionEdges = function(render) {
+ if (!ol.ENABLE_RASTER_REPROJECTION ||
+ this.renderReprojectionEdges_ == render) {
+ return;
+ }
+ this.renderReprojectionEdges_ = render;
+ for (var id in this.tileCacheForProjection) {
+ this.tileCacheForProjection[id].clear();
+ }
+ this.changed();
+};
+
+
+/**
+ * Sets the tile grid to use when reprojecting the tiles to the given
+ * projection instead of the default tile grid for the projection.
+ *
+ * This can be useful when the default tile grid cannot be created
+ * (e.g. projection has no extent defined) or
+ * for optimization reasons (custom tile size, resolutions, ...).
+ *
+ * @param {ol.ProjectionLike} projection Projection.
+ * @param {ol.tilegrid.TileGrid} tilegrid Tile grid to use for the projection.
+ * @api
+ */
+ol.source.TileImage.prototype.setTileGridForProjection = function(projection, tilegrid) {
+ if (ol.ENABLE_RASTER_REPROJECTION) {
+ var proj = ol.proj.get(projection);
+ if (proj) {
+ var projKey = goog.getUid(proj).toString();
+ if (!(projKey in this.tileGridForProjection)) {
+ this.tileGridForProjection[projKey] = tilegrid;
+ }
+ }
+ }
+};
+
+
+/**
+ * @param {ol.ImageTile} imageTile Image tile.
+ * @param {string} src Source.
+ */
+ol.source.TileImage.defaultTileLoadFunction = function(imageTile, src) {
+ imageTile.getImage().src = src;
+};
+
+goog.provide('ol.source.BingMaps');
+
+goog.require('goog.asserts');
+goog.require('ol.Attribution');
+goog.require('ol.TileRange');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.extent');
+goog.require('ol.net');
+goog.require('ol.proj');
+goog.require('ol.source.State');
+goog.require('ol.source.TileImage');
+goog.require('ol.tilecoord');
+
+
+/**
+ * @classdesc
+ * Layer source for Bing Maps tile data.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.BingMapsOptions} options Bing Maps options.
+ * @api stable
+ */
+ol.source.BingMaps = function(options) {
+
+ ol.source.TileImage.call(this, {
+ cacheSize: options.cacheSize,
+ crossOrigin: 'anonymous',
+ opaque: true,
+ projection: ol.proj.get('EPSG:3857'),
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ state: ol.source.State.LOADING,
+ tileLoadFunction: options.tileLoadFunction,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.culture_ = options.culture !== undefined ? options.culture : 'en-us';
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.maxZoom_ = options.maxZoom !== undefined ? options.maxZoom : -1;
+
+ var url = 'https://dev.virtualearth.net/REST/v1/Imagery/Metadata/' +
+ options.imagerySet +
+ '?uriScheme=https&include=ImageryProviders&key=' + options.key;
+
+ ol.net.jsonp(url, this.handleImageryMetadataResponse.bind(this), undefined,
+ 'jsonp');
+
+};
+ol.inherits(ol.source.BingMaps, ol.source.TileImage);
+
+
+/**
+ * The attribution containing a link to the Microsoft® Bing™ Maps Platform APIs’
+ * Terms Of Use.
+ * @const
+ * @type {ol.Attribution}
+ * @api
+ */
+ol.source.BingMaps.TOS_ATTRIBUTION = new ol.Attribution({
+ html: '<a class="ol-attribution-bing-tos" ' +
+ 'href="http://www.microsoft.com/maps/product/terms.html">' +
+ 'Terms of Use</a>'
+});
+
+
+/**
+ * @param {BingMapsImageryMetadataResponse} response Response.
+ */
+ol.source.BingMaps.prototype.handleImageryMetadataResponse = function(response) {
+
+ if (response.statusCode != 200 ||
+ response.statusDescription != 'OK' ||
+ response.authenticationResultCode != 'ValidCredentials' ||
+ response.resourceSets.length != 1 ||
+ response.resourceSets[0].resources.length != 1) {
+ this.setState(ol.source.State.ERROR);
+ return;
+ }
+
+ var brandLogoUri = response.brandLogoUri;
+ if (brandLogoUri.indexOf('https') == -1) {
+ brandLogoUri = brandLogoUri.replace('http', 'https');
+ }
+ //var copyright = response.copyright; // FIXME do we need to display this?
+ var resource = response.resourceSets[0].resources[0];
+ goog.asserts.assert(resource.imageWidth == resource.imageHeight,
+ 'resource has imageWidth equal to imageHeight, i.e. is square');
+ var maxZoom = this.maxZoom_ == -1 ? resource.zoomMax : this.maxZoom_;
+
+ var sourceProjection = this.getProjection();
+ var extent = ol.tilegrid.extentFromProjection(sourceProjection);
+ var tileSize = resource.imageWidth == resource.imageHeight ?
+ resource.imageWidth : [resource.imageWidth, resource.imageHeight];
+ var tileGrid = ol.tilegrid.createXYZ({
+ extent: extent,
+ minZoom: resource.zoomMin,
+ maxZoom: maxZoom,
+ tileSize: tileSize
+ });
+ this.tileGrid = tileGrid;
+
+ var culture = this.culture_;
+ this.tileUrlFunction = ol.TileUrlFunction.createFromTileUrlFunctions(
+ resource.imageUrlSubdomains.map(function(subdomain) {
+ var quadKeyTileCoord = [0, 0, 0];
+ var imageUrl = resource.imageUrl
+ .replace('{subdomain}', subdomain)
+ .replace('{culture}', culture);
+ return (
+ /**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ function(tileCoord, pixelRatio, projection) {
+ goog.asserts.assert(ol.proj.equivalent(
+ projection, sourceProjection),
+ 'projections are equivalent');
+ if (!tileCoord) {
+ return undefined;
+ } else {
+ ol.tilecoord.createOrUpdate(tileCoord[0], tileCoord[1],
+ -tileCoord[2] - 1, quadKeyTileCoord);
+ return imageUrl.replace('{quadkey}', ol.tilecoord.quadKey(
+ quadKeyTileCoord));
+ }
+ });
+ }));
+
+ if (resource.imageryProviders) {
+ var transform = ol.proj.getTransformFromProjections(
+ ol.proj.get('EPSG:4326'), this.getProjection());
+
+ var attributions = resource.imageryProviders.map(function(imageryProvider) {
+ var html = imageryProvider.attribution;
+ /** @type {Object.<string, Array.<ol.TileRange>>} */
+ var tileRanges = {};
+ imageryProvider.coverageAreas.forEach(function(coverageArea) {
+ var minZ = coverageArea.zoomMin;
+ var maxZ = Math.min(coverageArea.zoomMax, maxZoom);
+ var bbox = coverageArea.bbox;
+ var epsg4326Extent = [bbox[1], bbox[0], bbox[3], bbox[2]];
+ var extent = ol.extent.applyTransform(epsg4326Extent, transform);
+ var tileRange, z, zKey;
+ for (z = minZ; z <= maxZ; ++z) {
+ zKey = z.toString();
+ tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
+ if (zKey in tileRanges) {
+ tileRanges[zKey].push(tileRange);
+ } else {
+ tileRanges[zKey] = [tileRange];
+ }
+ }
+ });
+ return new ol.Attribution({html: html, tileRanges: tileRanges});
+ });
+ attributions.push(ol.source.BingMaps.TOS_ATTRIBUTION);
+ this.setAttributions(attributions);
+ }
+
+ this.setLogo(brandLogoUri);
+
+ this.setState(ol.source.State.READY);
+
+};
+
+goog.provide('ol.source.XYZ');
+
+goog.require('ol.source.TileImage');
+
+
+/**
+ * @classdesc
+ * Layer source for tile data with URLs in a set XYZ format that are
+ * defined in a URL template. By default, this follows the widely-used
+ * Google grid where `x` 0 and `y` 0 are in the top left. Grids like
+ * TMS where `x` 0 and `y` 0 are in the bottom left can be used by
+ * using the `{-y}` placeholder in the URL template, so long as the
+ * source does not have a custom tile grid. In this case,
+ * {@link ol.source.TileImage} can be used with a `tileUrlFunction`
+ * such as:
+ *
+ * tileUrlFunction: function(coordinate) {
+ * return 'http://mapserver.com/' + coordinate[0] + '/' +
+ * coordinate[1] + '/' + coordinate[2] + '.png';
+ * }
+ *
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.XYZOptions=} opt_options XYZ options.
+ * @api stable
+ */
+ol.source.XYZ = function(opt_options) {
+ var options = opt_options || {};
+ var projection = options.projection !== undefined ?
+ options.projection : 'EPSG:3857';
+
+ var tileGrid = options.tileGrid !== undefined ? options.tileGrid :
+ ol.tilegrid.createXYZ({
+ extent: ol.tilegrid.extentFromProjection(projection),
+ maxZoom: options.maxZoom,
+ minZoom: options.minZoom,
+ tileSize: options.tileSize
+ });
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ opaque: options.opaque,
+ projection: projection,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileGrid: tileGrid,
+ tileLoadFunction: options.tileLoadFunction,
+ tilePixelRatio: options.tilePixelRatio,
+ tileUrlFunction: options.tileUrlFunction,
+ url: options.url,
+ urls: options.urls,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+};
+ol.inherits(ol.source.XYZ, ol.source.TileImage);
+
+goog.provide('ol.source.CartoDB');
+
+goog.require('ol.object');
+goog.require('ol.source.State');
+goog.require('ol.source.XYZ');
+
+
+/**
+ * @classdesc
+ * Layer source for the CartoDB tiles.
+ *
+ * @constructor
+ * @extends {ol.source.XYZ}
+ * @param {olx.source.CartoDBOptions} options CartoDB options.
+ * @api
+ */
+ol.source.CartoDB = function(options) {
+
+ /**
+ * @type {string}
+ * @private
+ */
+ this.account_ = options.account;
+
+ /**
+ * @type {string}
+ * @private
+ */
+ this.mapId_ = options.map || '';
+
+ /**
+ * @type {!Object}
+ * @private
+ */
+ this.config_ = options.config || {};
+
+ /**
+ * @type {!Object.<string, CartoDBLayerInfo>}
+ * @private
+ */
+ this.templateCache_ = {};
+
+ ol.source.XYZ.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ maxZoom: options.maxZoom !== undefined ? options.maxZoom : 18,
+ minZoom: options.minZoom,
+ projection: options.projection,
+ state: ol.source.State.LOADING,
+ wrapX: options.wrapX
+ });
+ this.initializeMap_();
+};
+ol.inherits(ol.source.CartoDB, ol.source.XYZ);
+
+
+/**
+ * Returns the current config.
+ * @return {!Object} The current configuration.
+ * @api
+ */
+ol.source.CartoDB.prototype.getConfig = function() {
+ return this.config_;
+};
+
+
+/**
+ * Updates the carto db config.
+ * @param {Object} config a key-value lookup. Values will replace current values
+ * in the config.
+ * @api
+ */
+ol.source.CartoDB.prototype.updateConfig = function(config) {
+ ol.object.assign(this.config_, config);
+ this.initializeMap_();
+};
+
+
+/**
+ * Sets the CartoDB config
+ * @param {Object} config In the case of anonymous maps, a CartoDB configuration
+ * object.
+ * If using named maps, a key-value lookup with the template parameters.
+ * @api
+ */
+ol.source.CartoDB.prototype.setConfig = function(config) {
+ this.config_ = config || {};
+ this.initializeMap_();
+};
+
+
+/**
+ * Issue a request to initialize the CartoDB map.
+ * @private
+ */
+ol.source.CartoDB.prototype.initializeMap_ = function() {
+ var paramHash = JSON.stringify(this.config_);
+ if (this.templateCache_[paramHash]) {
+ this.applyTemplate_(this.templateCache_[paramHash]);
+ return;
+ }
+ var mapUrl = 'https://' + this.account_ + '.cartodb.com/api/v1/map';
+
+ if (this.mapId_) {
+ mapUrl += '/named/' + this.mapId_;
+ }
+
+ var client = new XMLHttpRequest();
+ client.addEventListener('load', this.handleInitResponse_.bind(this, paramHash));
+ client.addEventListener('error', this.handleInitError_.bind(this));
+ client.open('POST', mapUrl);
+ client.setRequestHeader('Content-type', 'application/json');
+ client.send(JSON.stringify(this.config_));
+};
+
+
+/**
+ * Handle map initialization response.
+ * @param {string} paramHash a hash representing the parameter set that was used
+ * for the request
+ * @param {Event} event Event.
+ * @private
+ */
+ol.source.CartoDB.prototype.handleInitResponse_ = function(paramHash, event) {
+ var client = /** @type {XMLHttpRequest} */ (event.target);
+ if (client.status >= 200 && client.status < 300) {
+ var response;
+ try {
+ response = /** @type {CartoDBLayerInfo} */(JSON.parse(client.responseText));
+ } catch (err) {
+ this.setState(ol.source.State.ERROR);
+ return;
+ }
+ this.applyTemplate_(response);
+ this.templateCache_[paramHash] = response;
+ this.setState(ol.source.State.READY);
+ } else {
+ this.setState(ol.source.State.ERROR);
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} event Event.
+ */
+ol.source.CartoDB.prototype.handleInitError_ = function(event) {
+ this.setState(ol.source.State.ERROR);
+};
+
+
+/**
+ * Apply the new tile urls returned by carto db
+ * @param {CartoDBLayerInfo} data Result of carto db call.
+ * @private
+ */
+ol.source.CartoDB.prototype.applyTemplate_ = function(data) {
+ var tilesUrl = 'https://' + data.cdn_url.https + '/' + this.account_ +
+ '/api/v1/map/' + data.layergroupid + '/{z}/{x}/{y}.png';
+ this.setUrl(tilesUrl);
+};
+
+// FIXME keep cluster cache by resolution ?
+// FIXME distance not respected because of the centroid
+
+goog.provide('ol.source.Cluster');
+
+goog.require('goog.asserts');
+goog.require('ol.Feature');
+goog.require('ol.coordinate');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.geom.Point');
+goog.require('ol.source.Vector');
+
+
+/**
+ * @classdesc
+ * Layer source to cluster vector data. Works out of the box with point
+ * geometries. For other geometry types, or if not all geometries should be
+ * considered for clustering, a custom `geometryFunction` can be defined.
+ *
+ * @constructor
+ * @param {olx.source.ClusterOptions} options Constructor options.
+ * @extends {ol.source.Vector}
+ * @api
+ */
+ol.source.Cluster = function(options) {
+ ol.source.Vector.call(this, {
+ attributions: options.attributions,
+ extent: options.extent,
+ logo: options.logo,
+ projection: options.projection,
+ wrapX: options.wrapX
+ });
+
+ /**
+ * @type {number|undefined}
+ * @private
+ */
+ this.resolution_ = undefined;
+
+ /**
+ * @type {number}
+ * @private
+ */
+ this.distance_ = options.distance !== undefined ? options.distance : 20;
+
+ /**
+ * @type {Array.<ol.Feature>}
+ * @private
+ */
+ this.features_ = [];
+
+ /**
+ * @param {ol.Feature} feature Feature.
+ * @return {ol.geom.Point} Cluster calculation point.
+ */
+ this.geometryFunction_ = options.geometryFunction || function(feature) {
+ var geometry = feature.getGeometry();
+ goog.asserts.assert(geometry instanceof ol.geom.Point,
+ 'feature geometry is a ol.geom.Point instance');
+ return geometry;
+ };
+
+ /**
+ * @type {ol.source.Vector}
+ * @private
+ */
+ this.source_ = options.source;
+
+ this.source_.on(ol.events.EventType.CHANGE,
+ ol.source.Cluster.prototype.onSourceChange_, this);
+};
+ol.inherits(ol.source.Cluster, ol.source.Vector);
+
+
+/**
+ * Get a reference to the wrapped source.
+ * @return {ol.source.Vector} Source.
+ * @api
+ */
+ol.source.Cluster.prototype.getSource = function() {
+ return this.source_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.Cluster.prototype.loadFeatures = function(extent, resolution,
+ projection) {
+ this.source_.loadFeatures(extent, resolution, projection);
+ if (resolution !== this.resolution_) {
+ this.clear();
+ this.resolution_ = resolution;
+ this.cluster_();
+ this.addFeatures(this.features_);
+ }
+};
+
+
+/**
+ * handle the source changing
+ * @private
+ */
+ol.source.Cluster.prototype.onSourceChange_ = function() {
+ this.clear();
+ this.cluster_();
+ this.addFeatures(this.features_);
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.source.Cluster.prototype.cluster_ = function() {
+ if (this.resolution_ === undefined) {
+ return;
+ }
+ this.features_.length = 0;
+ var extent = ol.extent.createEmpty();
+ var mapDistance = this.distance_ * this.resolution_;
+ var features = this.source_.getFeatures();
+
+ /**
+ * @type {!Object.<string, boolean>}
+ */
+ var clustered = {};
+
+ for (var i = 0, ii = features.length; i < ii; i++) {
+ var feature = features[i];
+ if (!(goog.getUid(feature).toString() in clustered)) {
+ var geometry = this.geometryFunction_(feature);
+ if (geometry) {
+ var coordinates = geometry.getCoordinates();
+ ol.extent.createOrUpdateFromCoordinate(coordinates, extent);
+ ol.extent.buffer(extent, mapDistance, extent);
+
+ var neighbors = this.source_.getFeaturesInExtent(extent);
+ goog.asserts.assert(neighbors.length >= 1, 'at least one neighbor found');
+ neighbors = neighbors.filter(function(neighbor) {
+ var uid = goog.getUid(neighbor).toString();
+ if (!(uid in clustered)) {
+ clustered[uid] = true;
+ return true;
+ } else {
+ return false;
+ }
+ });
+ this.features_.push(this.createCluster_(neighbors));
+ }
+ }
+ }
+ goog.asserts.assert(
+ Object.keys(clustered).length == this.source_.getFeatures().length,
+ 'number of clustered equals number of features in the source');
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features
+ * @return {ol.Feature} The cluster feature.
+ * @private
+ */
+ol.source.Cluster.prototype.createCluster_ = function(features) {
+ var centroid = [0, 0];
+ for (var i = features.length - 1; i >= 0; --i) {
+ var geometry = this.geometryFunction_(features[i]);
+ if (geometry) {
+ ol.coordinate.add(centroid, geometry.getCoordinates());
+ } else {
+ features.splice(i, 1);
+ }
+ }
+ ol.coordinate.scale(centroid, 1 / features.length);
+
+ var cluster = new ol.Feature(new ol.geom.Point(centroid));
+ cluster.set('features', features);
+ return cluster;
+};
+
+goog.provide('ol.uri');
+
+
+/**
+ * Appends query parameters to a URI.
+ *
+ * @param {string} uri The original URI, which may already have query data.
+ * @param {!Object} params An object where keys are URI-encoded parameter keys,
+ * and the values are arbitrary types or arrays.
+ * @return {string} The new URI.
+ */
+ol.uri.appendParams = function(uri, params) {
+ var qs = Object.keys(params).map(function(k) {
+ return k + '=' + encodeURIComponent(params[k]);
+ }).join('&');
+ // remove any trailing ? or &
+ uri = uri.replace(/[?&]$/, '');
+ // append ? or & depending on whether uri has existing parameters
+ uri = uri.indexOf('?') === -1 ? uri + '?' : uri + '&';
+ return uri + qs;
+};
+
+goog.provide('ol.source.ImageArcGISRest');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Image');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.source.Image');
+goog.require('ol.uri');
+
+
+/**
+ * @classdesc
+ * Source for data from ArcGIS Rest services providing single, untiled images.
+ * Useful when underlying map service has labels.
+ *
+ * If underlying map service is not using labels,
+ * take advantage of ol image caching and use
+ * {@link ol.source.TileArcGISRest} data source.
+ *
+ * @constructor
+ * @fires ol.source.ImageEvent
+ * @extends {ol.source.Image}
+ * @param {olx.source.ImageArcGISRestOptions=} opt_options Image ArcGIS Rest Options.
+ * @api
+ */
+ol.source.ImageArcGISRest = function(opt_options) {
+
+ var options = opt_options || {};
+
+ ol.source.Image.call(this, {
+ attributions: options.attributions,
+ logo: options.logo,
+ projection: options.projection,
+ resolutions: options.resolutions
+ });
+
+ /**
+ * @private
+ * @type {?string}
+ */
+ this.crossOrigin_ =
+ options.crossOrigin !== undefined ? options.crossOrigin : null;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.url_ = options.url;
+
+ /**
+ * @private
+ * @type {ol.ImageLoadFunctionType}
+ */
+ this.imageLoadFunction_ = options.imageLoadFunction !== undefined ?
+ options.imageLoadFunction : ol.source.Image.defaultImageLoadFunction;
+
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.params_ = options.params || {};
+
+ /**
+ * @private
+ * @type {ol.Image}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.imageSize_ = [0, 0];
+
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.ratio_ = options.ratio !== undefined ? options.ratio : 1.5;
+
+};
+ol.inherits(ol.source.ImageArcGISRest, ol.source.Image);
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ * @api stable
+ */
+ol.source.ImageArcGISRest.prototype.getParams = function() {
+ return this.params_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageArcGISRest.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
+
+ if (this.url_ === undefined) {
+ return null;
+ }
+
+ resolution = this.findNearestResolution(resolution);
+
+ var image = this.image_;
+ if (image &&
+ this.renderedRevision_ == this.getRevision() &&
+ image.getResolution() == resolution &&
+ image.getPixelRatio() == pixelRatio &&
+ ol.extent.containsExtent(image.getExtent(), extent)) {
+ return image;
+ }
+
+ var params = {
+ 'F': 'image',
+ 'FORMAT': 'PNG32',
+ 'TRANSPARENT': true
+ };
+ ol.object.assign(params, this.params_);
+
+ extent = extent.slice();
+ var centerX = (extent[0] + extent[2]) / 2;
+ var centerY = (extent[1] + extent[3]) / 2;
+ if (this.ratio_ != 1) {
+ var halfWidth = this.ratio_ * ol.extent.getWidth(extent) / 2;
+ var halfHeight = this.ratio_ * ol.extent.getHeight(extent) / 2;
+ extent[0] = centerX - halfWidth;
+ extent[1] = centerY - halfHeight;
+ extent[2] = centerX + halfWidth;
+ extent[3] = centerY + halfHeight;
+ }
+
+ var imageResolution = resolution / pixelRatio;
+
+ // Compute an integer width and height.
+ var width = Math.ceil(ol.extent.getWidth(extent) / imageResolution);
+ var height = Math.ceil(ol.extent.getHeight(extent) / imageResolution);
+
+ // Modify the extent to match the integer width and height.
+ extent[0] = centerX - imageResolution * width / 2;
+ extent[2] = centerX + imageResolution * width / 2;
+ extent[1] = centerY - imageResolution * height / 2;
+ extent[3] = centerY + imageResolution * height / 2;
+
+ this.imageSize_[0] = width;
+ this.imageSize_[1] = height;
+
+ var url = this.getRequestUrl_(extent, this.imageSize_, pixelRatio,
+ projection, params);
+
+ this.image_ = new ol.Image(extent, resolution, pixelRatio,
+ this.getAttributions(), url, this.crossOrigin_, this.imageLoadFunction_);
+
+ this.renderedRevision_ = this.getRevision();
+
+ ol.events.listen(this.image_, ol.events.EventType.CHANGE,
+ this.handleImageChange, this);
+
+ return this.image_;
+
+};
+
+
+/**
+ * Return the image load function of the source.
+ * @return {ol.ImageLoadFunctionType} The image load function.
+ * @api
+ */
+ol.source.ImageArcGISRest.prototype.getImageLoadFunction = function() {
+ return this.imageLoadFunction_;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {Object} params Params.
+ * @return {string} Request URL.
+ * @private
+ */
+ol.source.ImageArcGISRest.prototype.getRequestUrl_ = function(extent, size, pixelRatio, projection, params) {
+
+ goog.asserts.assert(this.url_ !== undefined, 'url is defined');
+
+ // ArcGIS Server only wants the numeric portion of the projection ID.
+ var srid = projection.getCode().split(':').pop();
+
+ params['SIZE'] = size[0] + ',' + size[1];
+ params['BBOX'] = extent.join(',');
+ params['BBOXSR'] = srid;
+ params['IMAGESR'] = srid;
+ params['DPI'] = 90 * pixelRatio;
+
+ var url = this.url_;
+
+ var modifiedUrl = url
+ .replace(/MapServer\/?$/, 'MapServer/export')
+ .replace(/ImageServer\/?$/, 'ImageServer/exportImage');
+ if (modifiedUrl == url) {
+ goog.asserts.fail('Unknown Rest Service', url);
+ }
+ return ol.uri.appendParams(modifiedUrl, params);
+};
+
+
+/**
+ * Return the URL used for this ArcGIS source.
+ * @return {string|undefined} URL.
+ * @api stable
+ */
+ol.source.ImageArcGISRest.prototype.getUrl = function() {
+ return this.url_;
+};
+
+
+/**
+ * Set the image load function of the source.
+ * @param {ol.ImageLoadFunctionType} imageLoadFunction Image load function.
+ * @api
+ */
+ol.source.ImageArcGISRest.prototype.setImageLoadFunction = function(imageLoadFunction) {
+ this.image_ = null;
+ this.imageLoadFunction_ = imageLoadFunction;
+ this.changed();
+};
+
+
+/**
+ * Set the URL to use for requests.
+ * @param {string|undefined} url URL.
+ * @api stable
+ */
+ol.source.ImageArcGISRest.prototype.setUrl = function(url) {
+ if (url != this.url_) {
+ this.url_ = url;
+ this.image_ = null;
+ this.changed();
+ }
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ * @api stable
+ */
+ol.source.ImageArcGISRest.prototype.updateParams = function(params) {
+ ol.object.assign(this.params_, params);
+ this.image_ = null;
+ this.changed();
+};
+
+goog.provide('ol.source.ImageMapGuide');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.Image');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.source.Image');
+goog.require('ol.uri');
+
+
+/**
+ * @classdesc
+ * Source for images from Mapguide servers
+ *
+ * @constructor
+ * @fires ol.source.ImageEvent
+ * @extends {ol.source.Image}
+ * @param {olx.source.ImageMapGuideOptions} options Options.
+ * @api stable
+ */
+ol.source.ImageMapGuide = function(options) {
+
+ ol.source.Image.call(this, {
+ projection: options.projection,
+ resolutions: options.resolutions
+ });
+
+ /**
+ * @private
+ * @type {?string}
+ */
+ this.crossOrigin_ =
+ options.crossOrigin !== undefined ? options.crossOrigin : null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.displayDpi_ = options.displayDpi !== undefined ?
+ options.displayDpi : 96;
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.params_ = options.params || {};
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.url_ = options.url;
+
+ /**
+ * @private
+ * @type {ol.ImageLoadFunctionType}
+ */
+ this.imageLoadFunction_ = options.imageLoadFunction !== undefined ?
+ options.imageLoadFunction : ol.source.Image.defaultImageLoadFunction;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.hidpi_ = options.hidpi !== undefined ? options.hidpi : true;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.metersPerUnit_ = options.metersPerUnit !== undefined ?
+ options.metersPerUnit : 1;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.ratio_ = options.ratio !== undefined ? options.ratio : 1;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.useOverlay_ = options.useOverlay !== undefined ?
+ options.useOverlay : false;
+
+ /**
+ * @private
+ * @type {ol.Image}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = 0;
+
+};
+ol.inherits(ol.source.ImageMapGuide, ol.source.Image);
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ * @api stable
+ */
+ol.source.ImageMapGuide.prototype.getParams = function() {
+ return this.params_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageMapGuide.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
+ resolution = this.findNearestResolution(resolution);
+ pixelRatio = this.hidpi_ ? pixelRatio : 1;
+
+ var image = this.image_;
+ if (image &&
+ this.renderedRevision_ == this.getRevision() &&
+ image.getResolution() == resolution &&
+ image.getPixelRatio() == pixelRatio &&
+ ol.extent.containsExtent(image.getExtent(), extent)) {
+ return image;
+ }
+
+ if (this.ratio_ != 1) {
+ extent = extent.slice();
+ ol.extent.scaleFromCenter(extent, this.ratio_);
+ }
+ var width = ol.extent.getWidth(extent) / resolution;
+ var height = ol.extent.getHeight(extent) / resolution;
+ var size = [width * pixelRatio, height * pixelRatio];
+
+ if (this.url_ !== undefined) {
+ var imageUrl = this.getUrl(this.url_, this.params_, extent, size,
+ projection);
+ image = new ol.Image(extent, resolution, pixelRatio,
+ this.getAttributions(), imageUrl, this.crossOrigin_,
+ this.imageLoadFunction_);
+ ol.events.listen(image, ol.events.EventType.CHANGE,
+ this.handleImageChange, this);
+ } else {
+ image = null;
+ }
+ this.image_ = image;
+ this.renderedRevision_ = this.getRevision();
+
+ return image;
+};
+
+
+/**
+ * Return the image load function of the source.
+ * @return {ol.ImageLoadFunctionType} The image load function.
+ * @api
+ */
+ol.source.ImageMapGuide.prototype.getImageLoadFunction = function() {
+ return this.imageLoadFunction_;
+};
+
+
+/**
+ * @param {ol.Extent} extent The map extents.
+ * @param {ol.Size} size The viewport size.
+ * @param {number} metersPerUnit The meters-per-unit value.
+ * @param {number} dpi The display resolution.
+ * @return {number} The computed map scale.
+ */
+ol.source.ImageMapGuide.getScale = function(extent, size, metersPerUnit, dpi) {
+ var mcsW = ol.extent.getWidth(extent);
+ var mcsH = ol.extent.getHeight(extent);
+ var devW = size[0];
+ var devH = size[1];
+ var mpp = 0.0254 / dpi;
+ if (devH * mcsW > devW * mcsH) {
+ return mcsW * metersPerUnit / (devW * mpp); // width limited
+ } else {
+ return mcsH * metersPerUnit / (devH * mpp); // height limited
+ }
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ * @api stable
+ */
+ol.source.ImageMapGuide.prototype.updateParams = function(params) {
+ ol.object.assign(this.params_, params);
+ this.changed();
+};
+
+
+/**
+ * @param {string} baseUrl The mapagent url.
+ * @param {Object.<string, string|number>} params Request parameters.
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Size} size Size.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string} The mapagent map image request URL.
+ */
+ol.source.ImageMapGuide.prototype.getUrl = function(baseUrl, params, extent, size, projection) {
+ var scale = ol.source.ImageMapGuide.getScale(extent, size,
+ this.metersPerUnit_, this.displayDpi_);
+ var center = ol.extent.getCenter(extent);
+ var baseParams = {
+ 'OPERATION': this.useOverlay_ ? 'GETDYNAMICMAPOVERLAYIMAGE' : 'GETMAPIMAGE',
+ 'VERSION': '2.0.0',
+ 'LOCALE': 'en',
+ 'CLIENTAGENT': 'ol.source.ImageMapGuide source',
+ 'CLIP': '1',
+ 'SETDISPLAYDPI': this.displayDpi_,
+ 'SETDISPLAYWIDTH': Math.round(size[0]),
+ 'SETDISPLAYHEIGHT': Math.round(size[1]),
+ 'SETVIEWSCALE': scale,
+ 'SETVIEWCENTERX': center[0],
+ 'SETVIEWCENTERY': center[1]
+ };
+ ol.object.assign(baseParams, params);
+ return ol.uri.appendParams(baseUrl, baseParams);
+};
+
+
+/**
+ * Set the image load function of the MapGuide source.
+ * @param {ol.ImageLoadFunctionType} imageLoadFunction Image load function.
+ * @api
+ */
+ol.source.ImageMapGuide.prototype.setImageLoadFunction = function(
+ imageLoadFunction) {
+ this.image_ = null;
+ this.imageLoadFunction_ = imageLoadFunction;
+ this.changed();
+};
+
+goog.provide('ol.source.ImageStatic');
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.Image');
+goog.require('ol.ImageState');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.proj');
+goog.require('ol.source.Image');
+
+
+/**
+ * @classdesc
+ * A layer source for displaying a single, static image.
+ *
+ * @constructor
+ * @extends {ol.source.Image}
+ * @param {olx.source.ImageStaticOptions} options Options.
+ * @api stable
+ */
+ol.source.ImageStatic = function(options) {
+ var imageExtent = options.imageExtent;
+
+ var crossOrigin = options.crossOrigin !== undefined ?
+ options.crossOrigin : null;
+
+ var /** @type {ol.ImageLoadFunctionType} */ imageLoadFunction =
+ options.imageLoadFunction !== undefined ?
+ options.imageLoadFunction : ol.source.Image.defaultImageLoadFunction;
+
+ ol.source.Image.call(this, {
+ attributions: options.attributions,
+ logo: options.logo,
+ projection: ol.proj.get(options.projection)
+ });
+
+ /**
+ * @private
+ * @type {ol.Image}
+ */
+ this.image_ = new ol.Image(imageExtent, undefined, 1, this.getAttributions(),
+ options.url, crossOrigin, imageLoadFunction);
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.imageSize_ = options.imageSize ? options.imageSize : null;
+
+ ol.events.listen(this.image_, ol.events.EventType.CHANGE,
+ this.handleImageChange, this);
+
+};
+ol.inherits(ol.source.ImageStatic, ol.source.Image);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageStatic.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
+ if (ol.extent.intersects(extent, this.image_.getExtent())) {
+ return this.image_;
+ }
+ return null;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageStatic.prototype.handleImageChange = function(evt) {
+ if (this.image_.getState() == ol.ImageState.LOADED) {
+ var imageExtent = this.image_.getExtent();
+ var image = this.image_.getImage();
+ var imageWidth, imageHeight;
+ if (this.imageSize_) {
+ imageWidth = this.imageSize_[0];
+ imageHeight = this.imageSize_[1];
+ } else {
+ // TODO: remove the type cast when a closure-compiler > 20160315 is used.
+ // see: https://github.com/google/closure-compiler/pull/1664
+ imageWidth = /** @type {number} */ (image.width);
+ imageHeight = /** @type {number} */ (image.height);
+ }
+ var resolution = ol.extent.getHeight(imageExtent) / imageHeight;
+ var targetWidth = Math.ceil(ol.extent.getWidth(imageExtent) / resolution);
+ if (targetWidth != imageWidth) {
+ var context = ol.dom.createCanvasContext2D(targetWidth, imageHeight);
+ var canvas = context.canvas;
+ context.drawImage(image, 0, 0, imageWidth, imageHeight,
+ 0, 0, canvas.width, canvas.height);
+ this.image_.setImage(canvas);
+ }
+ }
+ ol.source.Image.prototype.handleImageChange.call(this, evt);
+};
+
+goog.provide('ol.source.wms');
+goog.provide('ol.source.wms.ServerType');
+
+
+/**
+ * Available server types: `'carmentaserver'`, `'geoserver'`, `'mapserver'`,
+ * `'qgis'`. These are servers that have vendor parameters beyond the WMS
+ * specification that OpenLayers can make use of.
+ * @enum {string}
+ */
+ol.source.wms.ServerType = {
+ CARMENTA_SERVER: 'carmentaserver',
+ GEOSERVER: 'geoserver',
+ MAPSERVER: 'mapserver',
+ QGIS: 'qgis'
+};
+
+// FIXME cannot be shared between maps with different projections
+
+goog.provide('ol.source.ImageWMS');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.Image');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.source.Image');
+goog.require('ol.source.wms');
+goog.require('ol.source.wms.ServerType');
+goog.require('ol.string');
+goog.require('ol.uri');
+
+
+/**
+ * @classdesc
+ * Source for WMS servers providing single, untiled images.
+ *
+ * @constructor
+ * @fires ol.source.ImageEvent
+ * @extends {ol.source.Image}
+ * @param {olx.source.ImageWMSOptions=} opt_options Options.
+ * @api stable
+ */
+ol.source.ImageWMS = function(opt_options) {
+
+ var options = opt_options || {};
+
+ ol.source.Image.call(this, {
+ attributions: options.attributions,
+ logo: options.logo,
+ projection: options.projection,
+ resolutions: options.resolutions
+ });
+
+ /**
+ * @private
+ * @type {?string}
+ */
+ this.crossOrigin_ =
+ options.crossOrigin !== undefined ? options.crossOrigin : null;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.url_ = options.url;
+
+ /**
+ * @private
+ * @type {ol.ImageLoadFunctionType}
+ */
+ this.imageLoadFunction_ = options.imageLoadFunction !== undefined ?
+ options.imageLoadFunction : ol.source.Image.defaultImageLoadFunction;
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.params_ = options.params || {};
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.v13_ = true;
+ this.updateV13_();
+
+ /**
+ * @private
+ * @type {ol.source.wms.ServerType|undefined}
+ */
+ this.serverType_ =
+ /** @type {ol.source.wms.ServerType|undefined} */ (options.serverType);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.hidpi_ = options.hidpi !== undefined ? options.hidpi : true;
+
+ /**
+ * @private
+ * @type {ol.Image}
+ */
+ this.image_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.imageSize_ = [0, 0];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.renderedRevision_ = 0;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.ratio_ = options.ratio !== undefined ? options.ratio : 1.5;
+
+};
+ol.inherits(ol.source.ImageWMS, ol.source.Image);
+
+
+/**
+ * @const
+ * @type {ol.Size}
+ * @private
+ */
+ol.source.ImageWMS.GETFEATUREINFO_IMAGE_SIZE_ = [101, 101];
+
+
+/**
+ * Return the GetFeatureInfo URL for the passed coordinate, resolution, and
+ * projection. Return `undefined` if the GetFeatureInfo URL cannot be
+ * constructed.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {ol.ProjectionLike} projection Projection.
+ * @param {!Object} params GetFeatureInfo params. `INFO_FORMAT` at least should
+ * be provided. If `QUERY_LAYERS` is not provided then the layers specified
+ * in the `LAYERS` parameter will be used. `VERSION` should not be
+ * specified here.
+ * @return {string|undefined} GetFeatureInfo URL.
+ * @api stable
+ */
+ol.source.ImageWMS.prototype.getGetFeatureInfoUrl = function(coordinate, resolution, projection, params) {
+
+ goog.asserts.assert(!('VERSION' in params),
+ 'key VERSION is not allowed in params');
+
+ if (this.url_ === undefined) {
+ return undefined;
+ }
+
+ var extent = ol.extent.getForViewAndSize(
+ coordinate, resolution, 0,
+ ol.source.ImageWMS.GETFEATUREINFO_IMAGE_SIZE_);
+
+ var baseParams = {
+ 'SERVICE': 'WMS',
+ 'VERSION': ol.DEFAULT_WMS_VERSION,
+ 'REQUEST': 'GetFeatureInfo',
+ 'FORMAT': 'image/png',
+ 'TRANSPARENT': true,
+ 'QUERY_LAYERS': this.params_['LAYERS']
+ };
+ ol.object.assign(baseParams, this.params_, params);
+
+ var x = Math.floor((coordinate[0] - extent[0]) / resolution);
+ var y = Math.floor((extent[3] - coordinate[1]) / resolution);
+ baseParams[this.v13_ ? 'I' : 'X'] = x;
+ baseParams[this.v13_ ? 'J' : 'Y'] = y;
+
+ return this.getRequestUrl_(
+ extent, ol.source.ImageWMS.GETFEATUREINFO_IMAGE_SIZE_,
+ 1, ol.proj.get(projection), baseParams);
+};
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ * @api stable
+ */
+ol.source.ImageWMS.prototype.getParams = function() {
+ return this.params_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageWMS.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
+
+ if (this.url_ === undefined) {
+ return null;
+ }
+
+ resolution = this.findNearestResolution(resolution);
+
+ if (pixelRatio != 1 && (!this.hidpi_ || this.serverType_ === undefined)) {
+ pixelRatio = 1;
+ }
+
+ extent = extent.slice();
+ var centerX = (extent[0] + extent[2]) / 2;
+ var centerY = (extent[1] + extent[3]) / 2;
+
+ var imageResolution = resolution / pixelRatio;
+ var imageWidth = ol.extent.getWidth(extent) / imageResolution;
+ var imageHeight = ol.extent.getHeight(extent) / imageResolution;
+
+ var image = this.image_;
+ if (image &&
+ this.renderedRevision_ == this.getRevision() &&
+ image.getResolution() == resolution &&
+ image.getPixelRatio() == pixelRatio &&
+ ol.extent.containsExtent(image.getExtent(), extent)) {
+ return image;
+ }
+
+ if (this.ratio_ != 1) {
+ var halfWidth = this.ratio_ * ol.extent.getWidth(extent) / 2;
+ var halfHeight = this.ratio_ * ol.extent.getHeight(extent) / 2;
+ extent[0] = centerX - halfWidth;
+ extent[1] = centerY - halfHeight;
+ extent[2] = centerX + halfWidth;
+ extent[3] = centerY + halfHeight;
+ }
+
+ var params = {
+ 'SERVICE': 'WMS',
+ 'VERSION': ol.DEFAULT_WMS_VERSION,
+ 'REQUEST': 'GetMap',
+ 'FORMAT': 'image/png',
+ 'TRANSPARENT': true
+ };
+ ol.object.assign(params, this.params_);
+
+ this.imageSize_[0] = Math.ceil(imageWidth * this.ratio_);
+ this.imageSize_[1] = Math.ceil(imageHeight * this.ratio_);
+
+ var url = this.getRequestUrl_(extent, this.imageSize_, pixelRatio,
+ projection, params);
+
+ this.image_ = new ol.Image(extent, resolution, pixelRatio,
+ this.getAttributions(), url, this.crossOrigin_, this.imageLoadFunction_);
+
+ this.renderedRevision_ = this.getRevision();
+
+ ol.events.listen(this.image_, ol.events.EventType.CHANGE,
+ this.handleImageChange, this);
+
+ return this.image_;
+
+};
+
+
+/**
+ * Return the image load function of the source.
+ * @return {ol.ImageLoadFunctionType} The image load function.
+ * @api
+ */
+ol.source.ImageWMS.prototype.getImageLoadFunction = function() {
+ return this.imageLoadFunction_;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {ol.Size} size Size.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {Object} params Params.
+ * @return {string} Request URL.
+ * @private
+ */
+ol.source.ImageWMS.prototype.getRequestUrl_ = function(extent, size, pixelRatio, projection, params) {
+
+ goog.asserts.assert(this.url_ !== undefined, 'url is defined');
+
+ params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
+
+ if (!('STYLES' in this.params_)) {
+ params['STYLES'] = '';
+ }
+
+ if (pixelRatio != 1) {
+ switch (this.serverType_) {
+ case ol.source.wms.ServerType.GEOSERVER:
+ var dpi = (90 * pixelRatio + 0.5) | 0;
+ if ('FORMAT_OPTIONS' in params) {
+ params['FORMAT_OPTIONS'] += ';dpi:' + dpi;
+ } else {
+ params['FORMAT_OPTIONS'] = 'dpi:' + dpi;
+ }
+ break;
+ case ol.source.wms.ServerType.MAPSERVER:
+ params['MAP_RESOLUTION'] = 90 * pixelRatio;
+ break;
+ case ol.source.wms.ServerType.CARMENTA_SERVER:
+ case ol.source.wms.ServerType.QGIS:
+ params['DPI'] = 90 * pixelRatio;
+ break;
+ default:
+ goog.asserts.fail('unknown serverType configured');
+ break;
+ }
+ }
+
+ params['WIDTH'] = size[0];
+ params['HEIGHT'] = size[1];
+
+ var axisOrientation = projection.getAxisOrientation();
+ var bbox;
+ if (this.v13_ && axisOrientation.substr(0, 2) == 'ne') {
+ bbox = [extent[1], extent[0], extent[3], extent[2]];
+ } else {
+ bbox = extent;
+ }
+ params['BBOX'] = bbox.join(',');
+
+ return ol.uri.appendParams(this.url_, params);
+};
+
+
+/**
+ * Return the URL used for this WMS source.
+ * @return {string|undefined} URL.
+ * @api stable
+ */
+ol.source.ImageWMS.prototype.getUrl = function() {
+ return this.url_;
+};
+
+
+/**
+ * Set the image load function of the source.
+ * @param {ol.ImageLoadFunctionType} imageLoadFunction Image load function.
+ * @api
+ */
+ol.source.ImageWMS.prototype.setImageLoadFunction = function(
+ imageLoadFunction) {
+ this.image_ = null;
+ this.imageLoadFunction_ = imageLoadFunction;
+ this.changed();
+};
+
+
+/**
+ * Set the URL to use for requests.
+ * @param {string|undefined} url URL.
+ * @api stable
+ */
+ol.source.ImageWMS.prototype.setUrl = function(url) {
+ if (url != this.url_) {
+ this.url_ = url;
+ this.image_ = null;
+ this.changed();
+ }
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ * @api stable
+ */
+ol.source.ImageWMS.prototype.updateParams = function(params) {
+ ol.object.assign(this.params_, params);
+ this.updateV13_();
+ this.image_ = null;
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.source.ImageWMS.prototype.updateV13_ = function() {
+ var version = this.params_['VERSION'] || ol.DEFAULT_WMS_VERSION;
+ this.v13_ = ol.string.compareVersions(version, '1.3') >= 0;
+};
+
+goog.provide('ol.source.OSM');
+
+goog.require('ol.Attribution');
+goog.require('ol.source.XYZ');
+
+
+/**
+ * @classdesc
+ * Layer source for the OpenStreetMap tile server.
+ *
+ * @constructor
+ * @extends {ol.source.XYZ}
+ * @param {olx.source.OSMOptions=} opt_options Open Street Map options.
+ * @api stable
+ */
+ol.source.OSM = function(opt_options) {
+
+ var options = opt_options || {};
+
+ var attributions;
+ if (options.attributions !== undefined) {
+ attributions = options.attributions;
+ } else {
+ attributions = [ol.source.OSM.ATTRIBUTION];
+ }
+
+ var crossOrigin = options.crossOrigin !== undefined ?
+ options.crossOrigin : 'anonymous';
+
+ var url = options.url !== undefined ?
+ options.url : 'https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png';
+
+ ol.source.XYZ.call(this, {
+ attributions: attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: crossOrigin,
+ opaque: options.opaque !== undefined ? options.opaque : true,
+ maxZoom: options.maxZoom !== undefined ? options.maxZoom : 19,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileLoadFunction: options.tileLoadFunction,
+ url: url,
+ wrapX: options.wrapX
+ });
+
+};
+ol.inherits(ol.source.OSM, ol.source.XYZ);
+
+
+/**
+ * The attribution containing a link to the OpenStreetMap Copyright and License
+ * page.
+ * @const
+ * @type {ol.Attribution}
+ * @api
+ */
+ol.source.OSM.ATTRIBUTION = new ol.Attribution({
+ html: '&copy; ' +
+ '<a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> ' +
+ 'contributors.'
+});
+
+goog.provide('ol.ext.pixelworks');
+/** @typedef {function(*)} */
+ol.ext.pixelworks;
+(function() {
+var exports = {};
+var module = {exports: exports};
+var define;
+/**
+ * @fileoverview
+ * @suppress {accessControls, ambiguousFunctionDecl, checkDebuggerStatement, checkRegExp, checkTypes, checkVars, const, constantProperty, deprecated, duplicate, es5Strict, fileoverviewTags, missingProperties, nonStandardJsDocs, strictModuleDepCheck, suspiciousCode, undefinedNames, undefinedVars, unknownDefines, uselessCode, visibility}
+ */
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.pixelworks = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+var Processor = _dereq_('./processor');
+
+exports.Processor = Processor;
+
+},{"./processor":2}],2:[function(_dereq_,module,exports){
+var newImageData = _dereq_('./util').newImageData;
+
+/**
+ * Create a function for running operations. This function is serialized for
+ * use in a worker.
+ * @param {function(Array, Object):*} operation The operation.
+ * @return {function(Object):ArrayBuffer} A function that takes an object with
+ * buffers, meta, imageOps, width, and height properties and returns an array
+ * buffer.
+ */
+function createMinion(operation) {
+ var workerHasImageData = true;
+ try {
+ new ImageData(10, 10);
+ } catch (_) {
+ workerHasImageData = false;
+ }
+
+ function newWorkerImageData(data, width, height) {
+ if (workerHasImageData) {
+ return new ImageData(data, width, height);
+ } else {
+ return {data: data, width: width, height: height};
+ }
+ }
+
+ return function(data) {
+ // bracket notation for minification support
+ var buffers = data['buffers'];
+ var meta = data['meta'];
+ var imageOps = data['imageOps'];
+ var width = data['width'];
+ var height = data['height'];
+
+ var numBuffers = buffers.length;
+ var numBytes = buffers[0].byteLength;
+ var output, b;
+
+ if (imageOps) {
+ var images = new Array(numBuffers);
+ for (b = 0; b < numBuffers; ++b) {
+ images[b] = newWorkerImageData(
+ new Uint8ClampedArray(buffers[b]), width, height);
+ }
+ output = operation(images, meta).data;
+ } else {
+ output = new Uint8ClampedArray(numBytes);
+ var arrays = new Array(numBuffers);
+ var pixels = new Array(numBuffers);
+ for (b = 0; b < numBuffers; ++b) {
+ arrays[b] = new Uint8ClampedArray(buffers[b]);
+ pixels[b] = [0, 0, 0, 0];
+ }
+ for (var i = 0; i < numBytes; i += 4) {
+ for (var j = 0; j < numBuffers; ++j) {
+ var array = arrays[j];
+ pixels[j][0] = array[i];
+ pixels[j][1] = array[i + 1];
+ pixels[j][2] = array[i + 2];
+ pixels[j][3] = array[i + 3];
+ }
+ var pixel = operation(pixels, meta);
+ output[i] = pixel[0];
+ output[i + 1] = pixel[1];
+ output[i + 2] = pixel[2];
+ output[i + 3] = pixel[3];
+ }
+ }
+ return output.buffer;
+ };
+}
+
+/**
+ * Create a worker for running operations.
+ * @param {Object} config Configuration.
+ * @param {function(MessageEvent)} onMessage Called with a message event.
+ * @return {Worker} The worker.
+ */
+function createWorker(config, onMessage) {
+ var lib = Object.keys(config.lib || {}).map(function(name) {
+ return 'var ' + name + ' = ' + config.lib[name].toString() + ';';
+ });
+
+ var lines = lib.concat([
+ 'var __minion__ = (' + createMinion.toString() + ')(', config.operation.toString(), ');',
+ 'self.addEventListener("message", function(event) {',
+ ' var buffer = __minion__(event.data);',
+ ' self.postMessage({buffer: buffer, meta: event.data.meta}, [buffer]);',
+ '});'
+ ]);
+
+ var blob = new Blob(lines, {type: 'text/javascript'});
+ var source = URL.createObjectURL(blob);
+ var worker = new Worker(source);
+ worker.addEventListener('message', onMessage);
+ return worker;
+}
+
+/**
+ * Create a faux worker for running operations.
+ * @param {Object} config Configuration.
+ * @param {function(MessageEvent)} onMessage Called with a message event.
+ * @return {Object} The faux worker.
+ */
+function createFauxWorker(config, onMessage) {
+ var minion = createMinion(config.operation);
+ return {
+ postMessage: function(data) {
+ setTimeout(function() {
+ onMessage({'data': {'buffer': minion(data), 'meta': data['meta']}});
+ }, 0);
+ }
+ };
+}
+
+/**
+ * A processor runs pixel or image operations in workers.
+ * @param {Object} config Configuration.
+ */
+function Processor(config) {
+ this._imageOps = !!config.imageOps;
+ var threads;
+ if (config.threads === 0) {
+ threads = 0;
+ } else if (this._imageOps) {
+ threads = 1;
+ } else {
+ threads = config.threads || 1;
+ }
+ var workers = [];
+ if (threads) {
+ for (var i = 0; i < threads; ++i) {
+ workers[i] = createWorker(config, this._onWorkerMessage.bind(this, i));
+ }
+ } else {
+ workers[0] = createFauxWorker(config, this._onWorkerMessage.bind(this, 0));
+ }
+ this._workers = workers;
+ this._queue = [];
+ this._maxQueueLength = config.queue || Infinity;
+ this._running = 0;
+ this._dataLookup = {};
+ this._job = null;
+}
+
+/**
+ * Run operation on input data.
+ * @param {Array.<Array|ImageData>} inputs Array of pixels or image data
+ * (depending on the operation type).
+ * @param {Object} meta A user data object. This is passed to all operations
+ * and must be serializable.
+ * @param {function(Error, ImageData, Object)} callback Called when work
+ * completes. The first argument is any error. The second is the ImageData
+ * generated by operations. The third is the user data object.
+ */
+Processor.prototype.process = function(inputs, meta, callback) {
+ this._enqueue({
+ inputs: inputs,
+ meta: meta,
+ callback: callback
+ });
+ this._dispatch();
+};
+
+/**
+ * Stop responding to any completed work and destroy the processor.
+ */
+Processor.prototype.destroy = function() {
+ for (var key in this) {
+ this[key] = null;
+ }
+ this._destroyed = true;
+};
+
+/**
+ * Add a job to the queue.
+ * @param {Object} job The job.
+ */
+Processor.prototype._enqueue = function(job) {
+ this._queue.push(job);
+ while (this._queue.length > this._maxQueueLength) {
+ this._queue.shift().callback(null, null);
+ }
+};
+
+/**
+ * Dispatch a job.
+ */
+Processor.prototype._dispatch = function() {
+ if (this._running === 0 && this._queue.length > 0) {
+ var job = this._job = this._queue.shift();
+ var width = job.inputs[0].width;
+ var height = job.inputs[0].height;
+ var buffers = job.inputs.map(function(input) {
+ return input.data.buffer;
+ });
+ var threads = this._workers.length;
+ this._running = threads;
+ if (threads === 1) {
+ this._workers[0].postMessage({
+ 'buffers': buffers,
+ 'meta': job.meta,
+ 'imageOps': this._imageOps,
+ 'width': width,
+ 'height': height
+ }, buffers);
+ } else {
+ var length = job.inputs[0].data.length;
+ var segmentLength = 4 * Math.ceil(length / 4 / threads);
+ for (var i = 0; i < threads; ++i) {
+ var offset = i * segmentLength;
+ var slices = [];
+ for (var j = 0, jj = buffers.length; j < jj; ++j) {
+ slices.push(buffers[i].slice(offset, offset + segmentLength));
+ }
+ this._workers[i].postMessage({
+ 'buffers': slices,
+ 'meta': job.meta,
+ 'imageOps': this._imageOps,
+ 'width': width,
+ 'height': height
+ }, slices);
+ }
+ }
+ }
+};
+
+/**
+ * Handle messages from the worker.
+ * @param {number} index The worker index.
+ * @param {MessageEvent} event The message event.
+ */
+Processor.prototype._onWorkerMessage = function(index, event) {
+ if (this._destroyed) {
+ return;
+ }
+ this._dataLookup[index] = event.data;
+ --this._running;
+ if (this._running === 0) {
+ this._resolveJob();
+ }
+};
+
+/**
+ * Resolve a job. If there are no more worker threads, the processor callback
+ * will be called.
+ */
+Processor.prototype._resolveJob = function() {
+ var job = this._job;
+ var threads = this._workers.length;
+ var data, meta;
+ if (threads === 1) {
+ data = new Uint8ClampedArray(this._dataLookup[0]['buffer']);
+ meta = this._dataLookup[0]['meta'];
+ } else {
+ var length = job.inputs[0].data.length;
+ data = new Uint8ClampedArray(length);
+ meta = new Array(length);
+ var segmentLength = 4 * Math.ceil(length / 4 / threads);
+ for (var i = 0; i < threads; ++i) {
+ var buffer = this._dataLookup[i]['buffer'];
+ var offset = i * segmentLength;
+ data.set(new Uint8ClampedArray(buffer), offset);
+ meta[i] = this._dataLookup[i]['meta'];
+ }
+ }
+ this._job = null;
+ this._dataLookup = {};
+ job.callback(null,
+ newImageData(data, job.inputs[0].width, job.inputs[0].height), meta);
+ this._dispatch();
+};
+
+module.exports = Processor;
+
+},{"./util":3}],3:[function(_dereq_,module,exports){
+var hasImageData = true;
+try {
+ new ImageData(10, 10);
+} catch (_) {
+ hasImageData = false;
+}
+
+var context = document.createElement('canvas').getContext('2d');
+
+function newImageData(data, width, height) {
+ if (hasImageData) {
+ return new ImageData(data, width, height);
+ } else {
+ var imageData = context.createImageData(width, height);
+ imageData.data.set(data);
+ return imageData;
+ }
+}
+
+exports.newImageData = newImageData;
+
+},{}]},{},[1])(1)
+});
+ol.ext.pixelworks = module.exports;
+})();
+
+goog.provide('ol.RasterOperationType');
+goog.provide('ol.source.Raster');
+goog.provide('ol.source.RasterEvent');
+goog.provide('ol.source.RasterEventType');
+
+goog.require('goog.asserts');
+goog.require('goog.vec.Mat4');
+goog.require('ol.ImageCanvas');
+goog.require('ol.TileQueue');
+goog.require('ol.dom');
+goog.require('ol.events');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.ext.pixelworks');
+goog.require('ol.extent');
+goog.require('ol.layer.Image');
+goog.require('ol.layer.Tile');
+goog.require('ol.object');
+goog.require('ol.renderer.canvas.ImageLayer');
+goog.require('ol.renderer.canvas.TileLayer');
+goog.require('ol.source.Image');
+goog.require('ol.source.State');
+goog.require('ol.source.Tile');
+
+
+/**
+ * Raster operation type. Supported values are `'pixel'` and `'image'`.
+ * @enum {string}
+ */
+ol.RasterOperationType = {
+ PIXEL: 'pixel',
+ IMAGE: 'image'
+};
+
+
+/**
+ * @classdesc
+ * A source that transforms data from any number of input sources using an array
+ * of {@link ol.RasterOperation} functions to transform input pixel values into
+ * output pixel values.
+ *
+ * @constructor
+ * @extends {ol.source.Image}
+ * @fires ol.source.RasterEvent
+ * @param {olx.source.RasterOptions} options Options.
+ * @api
+ */
+ol.source.Raster = function(options) {
+
+ /**
+ * @private
+ * @type {*}
+ */
+ this.worker_ = null;
+
+ /**
+ * @private
+ * @type {ol.RasterOperationType}
+ */
+ this.operationType_ = options.operationType !== undefined ?
+ options.operationType : ol.RasterOperationType.PIXEL;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.threads_ = options.threads !== undefined ? options.threads : 1;
+
+ /**
+ * @private
+ * @type {Array.<ol.renderer.canvas.Layer>}
+ */
+ this.renderers_ = ol.source.Raster.createRenderers_(options.sources);
+
+ for (var r = 0, rr = this.renderers_.length; r < rr; ++r) {
+ ol.events.listen(this.renderers_[r], ol.events.EventType.CHANGE,
+ this.changed, this);
+ }
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.canvasContext_ = ol.dom.createCanvasContext2D();
+
+ /**
+ * @private
+ * @type {ol.TileQueue}
+ */
+ this.tileQueue_ = new ol.TileQueue(
+ function() {
+ return 1;
+ },
+ this.changed.bind(this));
+
+ var layerStatesArray = ol.source.Raster.getLayerStatesArray_(this.renderers_);
+ var layerStates = {};
+ for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {
+ layerStates[goog.getUid(layerStatesArray[i].layer)] = layerStatesArray[i];
+ }
+
+ /**
+ * The most recently rendered state.
+ * @type {?ol.SourceRasterRenderedState}
+ * @private
+ */
+ this.renderedState_ = null;
+
+ /**
+ * The most recently rendered image canvas.
+ * @type {ol.ImageCanvas}
+ * @private
+ */
+ this.renderedImageCanvas_ = null;
+
+ /**
+ * @private
+ * @type {olx.FrameState}
+ */
+ this.frameState_ = {
+ animate: false,
+ attributions: {},
+ coordinateToPixelMatrix: goog.vec.Mat4.createNumber(),
+ extent: null,
+ focus: null,
+ index: 0,
+ layerStates: layerStates,
+ layerStatesArray: layerStatesArray,
+ logos: {},
+ pixelRatio: 1,
+ pixelToCoordinateMatrix: goog.vec.Mat4.createNumber(),
+ postRenderFunctions: [],
+ size: [0, 0],
+ skippedFeatureUids: {},
+ tileQueue: this.tileQueue_,
+ time: Date.now(),
+ usedTiles: {},
+ viewState: /** @type {olx.ViewState} */ ({
+ rotation: 0
+ }),
+ viewHints: [],
+ wantedTiles: {}
+ };
+
+ ol.source.Image.call(this, {});
+
+ if (options.operation !== undefined) {
+ this.setOperation(options.operation, options.lib);
+ }
+
+};
+ol.inherits(ol.source.Raster, ol.source.Image);
+
+
+/**
+ * Set the operation.
+ * @param {ol.RasterOperation} operation New operation.
+ * @param {Object=} opt_lib Functions that will be available to operations run
+ * in a worker.
+ * @api
+ */
+ol.source.Raster.prototype.setOperation = function(operation, opt_lib) {
+ this.worker_ = new ol.ext.pixelworks.Processor({
+ operation: operation,
+ imageOps: this.operationType_ === ol.RasterOperationType.IMAGE,
+ queue: 1,
+ lib: opt_lib,
+ threads: this.threads_
+ });
+ this.changed();
+};
+
+
+/**
+ * Update the stored frame state.
+ * @param {ol.Extent} extent The view extent (in map units).
+ * @param {number} resolution The view resolution.
+ * @param {ol.proj.Projection} projection The view projection.
+ * @return {olx.FrameState} The updated frame state.
+ * @private
+ */
+ol.source.Raster.prototype.updateFrameState_ = function(extent, resolution, projection) {
+
+ var frameState = /** @type {olx.FrameState} */ (
+ ol.object.assign({}, this.frameState_));
+
+ frameState.viewState = /** @type {olx.ViewState} */ (
+ ol.object.assign({}, frameState.viewState));
+
+ var center = ol.extent.getCenter(extent);
+ var width = Math.round(ol.extent.getWidth(extent) / resolution);
+ var height = Math.round(ol.extent.getHeight(extent) / resolution);
+
+ frameState.extent = extent;
+ frameState.focus = ol.extent.getCenter(extent);
+ frameState.size[0] = width;
+ frameState.size[1] = height;
+
+ var viewState = frameState.viewState;
+ viewState.center = center;
+ viewState.projection = projection;
+ viewState.resolution = resolution;
+ return frameState;
+};
+
+
+/**
+ * Determine if the most recently rendered image canvas is dirty.
+ * @param {ol.Extent} extent The requested extent.
+ * @param {number} resolution The requested resolution.
+ * @return {boolean} The image is dirty.
+ * @private
+ */
+ol.source.Raster.prototype.isDirty_ = function(extent, resolution) {
+ var state = this.renderedState_;
+ return !state ||
+ this.getRevision() !== state.revision ||
+ resolution !== state.resolution ||
+ !ol.extent.equals(extent, state.extent);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.Raster.prototype.getImage = function(extent, resolution, pixelRatio, projection) {
+
+ if (!this.allSourcesReady_()) {
+ return null;
+ }
+
+ var currentExtent = extent.slice();
+ if (!this.isDirty_(currentExtent, resolution)) {
+ return this.renderedImageCanvas_;
+ }
+
+ var context = this.canvasContext_;
+ var canvas = context.canvas;
+
+ var width = Math.round(ol.extent.getWidth(currentExtent) / resolution);
+ var height = Math.round(ol.extent.getHeight(currentExtent) / resolution);
+
+ if (width !== canvas.width ||
+ height !== canvas.height) {
+ canvas.width = width;
+ canvas.height = height;
+ }
+
+ var frameState = this.updateFrameState_(currentExtent, resolution, projection);
+
+ var imageCanvas = new ol.ImageCanvas(
+ currentExtent, resolution, 1, this.getAttributions(), canvas,
+ this.composeFrame_.bind(this, frameState));
+
+ this.renderedImageCanvas_ = imageCanvas;
+
+ this.renderedState_ = {
+ extent: currentExtent,
+ resolution: resolution,
+ revision: this.getRevision()
+ };
+
+ return imageCanvas;
+};
+
+
+/**
+ * Determine if all sources are ready.
+ * @return {boolean} All sources are ready.
+ * @private
+ */
+ol.source.Raster.prototype.allSourcesReady_ = function() {
+ var ready = true;
+ var source;
+ for (var i = 0, ii = this.renderers_.length; i < ii; ++i) {
+ source = this.renderers_[i].getLayer().getSource();
+ if (source.getState() !== ol.source.State.READY) {
+ ready = false;
+ break;
+ }
+ }
+ return ready;
+};
+
+
+/**
+ * Compose the frame. This renders data from all sources, runs pixel-wise
+ * operations, and renders the result to the stored canvas context.
+ * @param {olx.FrameState} frameState The frame state.
+ * @param {function(Error)} callback Called when composition is complete.
+ * @private
+ */
+ol.source.Raster.prototype.composeFrame_ = function(frameState, callback) {
+ var len = this.renderers_.length;
+ var imageDatas = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ var imageData = ol.source.Raster.getImageData_(
+ this.renderers_[i], frameState, frameState.layerStatesArray[i]);
+ if (imageData) {
+ imageDatas[i] = imageData;
+ } else {
+ // image not yet ready
+ return;
+ }
+ }
+
+ var data = {};
+ this.dispatchEvent(new ol.source.RasterEvent(
+ ol.source.RasterEventType.BEFOREOPERATIONS, frameState, data));
+
+ this.worker_.process(imageDatas, data,
+ this.onWorkerComplete_.bind(this, frameState, callback));
+
+ frameState.tileQueue.loadMoreTiles(16, 16);
+};
+
+
+/**
+ * Called when pixel processing is complete.
+ * @param {olx.FrameState} frameState The frame state.
+ * @param {function(Error)} callback Called when rendering is complete.
+ * @param {Error} err Any error during processing.
+ * @param {ImageData} output The output image data.
+ * @param {Object} data The user data.
+ * @private
+ */
+ol.source.Raster.prototype.onWorkerComplete_ = function(frameState, callback, err, output, data) {
+ if (err) {
+ callback(err);
+ return;
+ }
+ if (!output) {
+ // job aborted
+ return;
+ }
+
+ this.dispatchEvent(new ol.source.RasterEvent(
+ ol.source.RasterEventType.AFTEROPERATIONS, frameState, data));
+
+ var resolution = frameState.viewState.resolution / frameState.pixelRatio;
+ if (!this.isDirty_(frameState.extent, resolution)) {
+ this.canvasContext_.putImageData(output, 0, 0);
+ }
+
+ callback(null);
+};
+
+
+/**
+ * Get image data from a renderer.
+ * @param {ol.renderer.canvas.Layer} renderer Layer renderer.
+ * @param {olx.FrameState} frameState The frame state.
+ * @param {ol.LayerState} layerState The layer state.
+ * @return {ImageData} The image data.
+ * @private
+ */
+ol.source.Raster.getImageData_ = function(renderer, frameState, layerState) {
+ if (!renderer.prepareFrame(frameState, layerState)) {
+ return null;
+ }
+ var width = frameState.size[0];
+ var height = frameState.size[1];
+ if (!ol.source.Raster.context_) {
+ ol.source.Raster.context_ = ol.dom.createCanvasContext2D(width, height);
+ } else {
+ var canvas = ol.source.Raster.context_.canvas;
+ if (canvas.width !== width || canvas.height !== height) {
+ ol.source.Raster.context_ = ol.dom.createCanvasContext2D(width, height);
+ } else {
+ ol.source.Raster.context_.clearRect(0, 0, width, height);
+ }
+ }
+ renderer.composeFrame(frameState, layerState, ol.source.Raster.context_);
+ return ol.source.Raster.context_.getImageData(0, 0, width, height);
+};
+
+
+/**
+ * A reusable canvas context.
+ * @type {CanvasRenderingContext2D}
+ * @private
+ */
+ol.source.Raster.context_ = null;
+
+
+/**
+ * Get a list of layer states from a list of renderers.
+ * @param {Array.<ol.renderer.canvas.Layer>} renderers Layer renderers.
+ * @return {Array.<ol.LayerState>} The layer states.
+ * @private
+ */
+ol.source.Raster.getLayerStatesArray_ = function(renderers) {
+ return renderers.map(function(renderer) {
+ return renderer.getLayer().getLayerState();
+ });
+};
+
+
+/**
+ * Create renderers for all sources.
+ * @param {Array.<ol.source.Source>} sources The sources.
+ * @return {Array.<ol.renderer.canvas.Layer>} Array of layer renderers.
+ * @private
+ */
+ol.source.Raster.createRenderers_ = function(sources) {
+ var len = sources.length;
+ var renderers = new Array(len);
+ for (var i = 0; i < len; ++i) {
+ renderers[i] = ol.source.Raster.createRenderer_(sources[i]);
+ }
+ return renderers;
+};
+
+
+/**
+ * Create a renderer for the provided source.
+ * @param {ol.source.Source} source The source.
+ * @return {ol.renderer.canvas.Layer} The renderer.
+ * @private
+ */
+ol.source.Raster.createRenderer_ = function(source) {
+ var renderer = null;
+ if (source instanceof ol.source.Tile) {
+ renderer = ol.source.Raster.createTileRenderer_(source);
+ } else if (source instanceof ol.source.Image) {
+ renderer = ol.source.Raster.createImageRenderer_(source);
+ } else {
+ goog.asserts.fail('Unsupported source type: ' + source);
+ }
+ return renderer;
+};
+
+
+/**
+ * Create an image renderer for the provided source.
+ * @param {ol.source.Image} source The source.
+ * @return {ol.renderer.canvas.Layer} The renderer.
+ * @private
+ */
+ol.source.Raster.createImageRenderer_ = function(source) {
+ var layer = new ol.layer.Image({source: source});
+ return new ol.renderer.canvas.ImageLayer(layer);
+};
+
+
+/**
+ * Create a tile renderer for the provided source.
+ * @param {ol.source.Tile} source The source.
+ * @return {ol.renderer.canvas.Layer} The renderer.
+ * @private
+ */
+ol.source.Raster.createTileRenderer_ = function(source) {
+ var layer = new ol.layer.Tile({source: source});
+ return new ol.renderer.canvas.TileLayer(layer);
+};
+
+
+/**
+ * @classdesc
+ * Events emitted by {@link ol.source.Raster} instances are instances of this
+ * type.
+ *
+ * @constructor
+ * @extends {ol.events.Event}
+ * @implements {oli.source.RasterEvent}
+ * @param {string} type Type.
+ * @param {olx.FrameState} frameState The frame state.
+ * @param {Object} data An object made available to operations.
+ */
+ol.source.RasterEvent = function(type, frameState, data) {
+ ol.events.Event.call(this, type);
+
+ /**
+ * The raster extent.
+ * @type {ol.Extent}
+ * @api
+ */
+ this.extent = frameState.extent;
+
+ /**
+ * The pixel resolution (map units per pixel).
+ * @type {number}
+ * @api
+ */
+ this.resolution = frameState.viewState.resolution / frameState.pixelRatio;
+
+ /**
+ * An object made available to all operations. This can be used by operations
+ * as a storage object (e.g. for calculating statistics).
+ * @type {Object}
+ * @api
+ */
+ this.data = data;
+
+};
+ol.inherits(ol.source.RasterEvent, ol.events.Event);
+
+
+/**
+ * @enum {string}
+ */
+ol.source.RasterEventType = {
+ /**
+ * Triggered before operations are run.
+ * @event ol.source.RasterEvent#beforeoperations
+ * @api
+ */
+ BEFOREOPERATIONS: 'beforeoperations',
+
+ /**
+ * Triggered after operations are run.
+ * @event ol.source.RasterEvent#afteroperations
+ * @api
+ */
+ AFTEROPERATIONS: 'afteroperations'
+};
+
+goog.provide('ol.source.Stamen');
+
+goog.require('goog.asserts');
+goog.require('ol.Attribution');
+goog.require('ol.source.OSM');
+goog.require('ol.source.XYZ');
+
+
+/**
+ * @type {Object.<string, {extension: string, opaque: boolean}>}
+ */
+ol.source.StamenLayerConfig = {
+ 'terrain': {
+ extension: 'jpg',
+ opaque: true
+ },
+ 'terrain-background': {
+ extension: 'jpg',
+ opaque: true
+ },
+ 'terrain-labels': {
+ extension: 'png',
+ opaque: false
+ },
+ 'terrain-lines': {
+ extension: 'png',
+ opaque: false
+ },
+ 'toner-background': {
+ extension: 'png',
+ opaque: true
+ },
+ 'toner': {
+ extension: 'png',
+ opaque: true
+ },
+ 'toner-hybrid': {
+ extension: 'png',
+ opaque: false
+ },
+ 'toner-labels': {
+ extension: 'png',
+ opaque: false
+ },
+ 'toner-lines': {
+ extension: 'png',
+ opaque: false
+ },
+ 'toner-lite': {
+ extension: 'png',
+ opaque: true
+ },
+ 'watercolor': {
+ extension: 'jpg',
+ opaque: true
+ }
+};
+
+
+/**
+ * @type {Object.<string, {minZoom: number, maxZoom: number}>}
+ */
+ol.source.StamenProviderConfig = {
+ 'terrain': {
+ minZoom: 4,
+ maxZoom: 18
+ },
+ 'toner': {
+ minZoom: 0,
+ maxZoom: 20
+ },
+ 'watercolor': {
+ minZoom: 1,
+ maxZoom: 16
+ }
+};
+
+
+/**
+ * @classdesc
+ * Layer source for the Stamen tile server.
+ *
+ * @constructor
+ * @extends {ol.source.XYZ}
+ * @param {olx.source.StamenOptions} options Stamen options.
+ * @api stable
+ */
+ol.source.Stamen = function(options) {
+
+ var i = options.layer.indexOf('-');
+ var provider = i == -1 ? options.layer : options.layer.slice(0, i);
+ goog.asserts.assert(provider in ol.source.StamenProviderConfig,
+ 'known provider configured');
+ var providerConfig = ol.source.StamenProviderConfig[provider];
+
+ goog.asserts.assert(options.layer in ol.source.StamenLayerConfig,
+ 'known layer configured');
+ var layerConfig = ol.source.StamenLayerConfig[options.layer];
+
+ var url = options.url !== undefined ? options.url :
+ 'https://stamen-tiles-{a-d}.a.ssl.fastly.net/' + options.layer +
+ '/{z}/{x}/{y}.' + layerConfig.extension;
+
+ ol.source.XYZ.call(this, {
+ attributions: ol.source.Stamen.ATTRIBUTIONS,
+ cacheSize: options.cacheSize,
+ crossOrigin: 'anonymous',
+ maxZoom: options.maxZoom != undefined ? options.maxZoom : providerConfig.maxZoom,
+ minZoom: options.minZoom != undefined ? options.minZoom : providerConfig.minZoom,
+ opaque: layerConfig.opaque,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileLoadFunction: options.tileLoadFunction,
+ url: url
+ });
+
+};
+ol.inherits(ol.source.Stamen, ol.source.XYZ);
+
+
+/**
+ * @const
+ * @type {Array.<ol.Attribution>}
+ */
+ol.source.Stamen.ATTRIBUTIONS = [
+ new ol.Attribution({
+ html: 'Map tiles by <a href="http://stamen.com/">Stamen Design</a>, ' +
+ 'under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY' +
+ ' 3.0</a>.'
+ }),
+ ol.source.OSM.ATTRIBUTION
+];
+
+goog.provide('ol.source.TileArcGISRest');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.math');
+goog.require('ol.proj');
+goog.require('ol.size');
+goog.require('ol.source.TileImage');
+goog.require('ol.tilecoord');
+goog.require('ol.uri');
+
+
+/**
+ * @classdesc
+ * Layer source for tile data from ArcGIS Rest services. Map and Image
+ * Services are supported.
+ *
+ * For cached ArcGIS services, better performance is available using the
+ * {@link ol.source.XYZ} data source.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.TileArcGISRestOptions=} opt_options Tile ArcGIS Rest
+ * options.
+ * @api
+ */
+ol.source.TileArcGISRest = function(opt_options) {
+
+ var options = opt_options || {};
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ projection: options.projection,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileGrid: options.tileGrid,
+ tileLoadFunction: options.tileLoadFunction,
+ url: options.url,
+ urls: options.urls,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.params_ = options.params || {};
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.tmpExtent_ = ol.extent.createEmpty();
+
+};
+ol.inherits(ol.source.TileArcGISRest, ol.source.TileImage);
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ * @api
+ */
+ol.source.TileArcGISRest.prototype.getParams = function() {
+ return this.params_;
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.Size} tileSize Tile size.
+ * @param {ol.Extent} tileExtent Tile extent.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {Object} params Params.
+ * @return {string|undefined} Request URL.
+ * @private
+ */
+ol.source.TileArcGISRest.prototype.getRequestUrl_ = function(tileCoord, tileSize, tileExtent,
+ pixelRatio, projection, params) {
+
+ var urls = this.urls;
+ if (!urls) {
+ return undefined;
+ }
+
+ // ArcGIS Server only wants the numeric portion of the projection ID.
+ var srid = projection.getCode().split(':').pop();
+
+ params['SIZE'] = tileSize[0] + ',' + tileSize[1];
+ params['BBOX'] = tileExtent.join(',');
+ params['BBOXSR'] = srid;
+ params['IMAGESR'] = srid;
+ params['DPI'] = Math.round(
+ params['DPI'] ? params['DPI'] * pixelRatio : 90 * pixelRatio
+ );
+
+ var url;
+ if (urls.length == 1) {
+ url = urls[0];
+ } else {
+ var index = ol.math.modulo(ol.tilecoord.hash(tileCoord), urls.length);
+ url = urls[index];
+ }
+
+ var modifiedUrl = url
+ .replace(/MapServer\/?$/, 'MapServer/export')
+ .replace(/ImageServer\/?$/, 'ImageServer/exportImage');
+ if (modifiedUrl == url) {
+ goog.asserts.fail('Unknown Rest Service', url);
+ }
+ return ol.uri.appendParams(modifiedUrl, params);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileArcGISRest.prototype.getTilePixelRatio = function(pixelRatio) {
+ return pixelRatio;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileArcGISRest.prototype.fixedTileUrlFunction = function(tileCoord, pixelRatio, projection) {
+
+ var tileGrid = this.getTileGrid();
+ if (!tileGrid) {
+ tileGrid = this.getTileGridForProjection(projection);
+ }
+
+ if (tileGrid.getResolutions().length <= tileCoord[0]) {
+ return undefined;
+ }
+
+ var tileExtent = tileGrid.getTileCoordExtent(
+ tileCoord, this.tmpExtent_);
+ var tileSize = ol.size.toSize(
+ tileGrid.getTileSize(tileCoord[0]), this.tmpSize);
+
+ if (pixelRatio != 1) {
+ tileSize = ol.size.scale(tileSize, pixelRatio, this.tmpSize);
+ }
+
+ // Apply default params and override with user specified values.
+ var baseParams = {
+ 'F': 'image',
+ 'FORMAT': 'PNG32',
+ 'TRANSPARENT': true
+ };
+ ol.object.assign(baseParams, this.params_);
+
+ return this.getRequestUrl_(tileCoord, tileSize, tileExtent,
+ pixelRatio, projection, baseParams);
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ * @api stable
+ */
+ol.source.TileArcGISRest.prototype.updateParams = function(params) {
+ ol.object.assign(this.params_, params);
+ this.changed();
+};
+
+goog.provide('ol.source.TileDebug');
+
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.dom');
+goog.require('ol.size');
+goog.require('ol.source.Tile');
+
+
+/**
+ * @constructor
+ * @extends {ol.Tile}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.Size} tileSize Tile size.
+ * @param {string} text Text.
+ * @private
+ */
+ol.DebugTile_ = function(tileCoord, tileSize, text) {
+
+ ol.Tile.call(this, tileCoord, ol.TileState.LOADED);
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.tileSize_ = tileSize;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.text_ = text;
+
+ /**
+ * @private
+ * @type {Object.<number, HTMLCanvasElement>}
+ */
+ this.canvasByContext_ = {};
+
+};
+ol.inherits(ol.DebugTile_, ol.Tile);
+
+
+/**
+ * Get the image element for this tile.
+ * @param {Object=} opt_context Optional context. Only used by the DOM
+ * renderer.
+ * @return {HTMLCanvasElement} Image.
+ */
+ol.DebugTile_.prototype.getImage = function(opt_context) {
+ var key = opt_context !== undefined ? goog.getUid(opt_context) : -1;
+ if (key in this.canvasByContext_) {
+ return this.canvasByContext_[key];
+ } else {
+
+ var tileSize = this.tileSize_;
+ var context = ol.dom.createCanvasContext2D(tileSize[0], tileSize[1]);
+
+ context.strokeStyle = 'black';
+ context.strokeRect(0.5, 0.5, tileSize[0] + 0.5, tileSize[1] + 0.5);
+
+ context.fillStyle = 'black';
+ context.textAlign = 'center';
+ context.textBaseline = 'middle';
+ context.font = '24px sans-serif';
+ context.fillText(this.text_, tileSize[0] / 2, tileSize[1] / 2);
+
+ this.canvasByContext_[key] = context.canvas;
+ return context.canvas;
+
+ }
+};
+
+
+/**
+ * @classdesc
+ * A pseudo tile source, which does not fetch tiles from a server, but renders
+ * a grid outline for the tile grid/projection along with the coordinates for
+ * each tile. See examples/canvas-tiles for an example.
+ *
+ * Uses Canvas context2d, so requires Canvas support.
+ *
+ * @constructor
+ * @extends {ol.source.Tile}
+ * @param {olx.source.TileDebugOptions} options Debug tile options.
+ * @api
+ */
+ol.source.TileDebug = function(options) {
+
+ ol.source.Tile.call(this, {
+ opaque: false,
+ projection: options.projection,
+ tileGrid: options.tileGrid,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+};
+ol.inherits(ol.source.TileDebug, ol.source.Tile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileDebug.prototype.getTile = function(z, x, y) {
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ if (this.tileCache.containsKey(tileCoordKey)) {
+ return /** @type {!ol.DebugTile_} */ (this.tileCache.get(tileCoordKey));
+ } else {
+ var tileSize = ol.size.toSize(this.tileGrid.getTileSize(z));
+ var tileCoord = [z, x, y];
+ var textTileCoord = this.getTileCoordForTileUrlFunction(tileCoord);
+ var text = !textTileCoord ? '' :
+ this.getTileCoordForTileUrlFunction(textTileCoord).toString();
+ var tile = new ol.DebugTile_(tileCoord, tileSize, text);
+ this.tileCache.set(tileCoordKey, tile);
+ return tile;
+ }
+};
+
+// FIXME check order of async callbacks
+
+/**
+ * @see http://mapbox.com/developers/api/
+ */
+
+goog.provide('ol.source.TileJSON');
+goog.provide('ol.tilejson');
+
+goog.require('goog.asserts');
+goog.require('ol.Attribution');
+goog.require('ol.TileRange');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.extent');
+goog.require('ol.net');
+goog.require('ol.proj');
+goog.require('ol.source.State');
+goog.require('ol.source.TileImage');
+
+
+/**
+ * @classdesc
+ * Layer source for tile data in TileJSON format.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.TileJSONOptions} options TileJSON options.
+ * @api stable
+ */
+ol.source.TileJSON = function(options) {
+
+ /**
+ * @type {TileJSON}
+ * @private
+ */
+ this.tileJSON_ = null;
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ projection: ol.proj.get('EPSG:3857'),
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ state: ol.source.State.LOADING,
+ tileLoadFunction: options.tileLoadFunction,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+ if (options.jsonp) {
+ ol.net.jsonp(options.url, this.handleTileJSONResponse.bind(this),
+ this.handleTileJSONError.bind(this));
+ } else {
+ var client = new XMLHttpRequest();
+ client.addEventListener('load', this.onXHRLoad_.bind(this));
+ client.addEventListener('error', this.onXHRError_.bind(this));
+ client.open('GET', options.url);
+ client.send();
+ }
+
+};
+ol.inherits(ol.source.TileJSON, ol.source.TileImage);
+
+
+/**
+ * @private
+ * @param {Event} event The load event.
+ */
+ol.source.TileJSON.prototype.onXHRLoad_ = function(event) {
+ var client = /** @type {XMLHttpRequest} */ (event.target);
+ if (client.status >= 200 && client.status < 300) {
+ var response;
+ try {
+ response = /** @type {TileJSON} */(JSON.parse(client.responseText));
+ } catch (err) {
+ this.handleTileJSONError();
+ return;
+ }
+ this.handleTileJSONResponse(response);
+ } else {
+ this.handleTileJSONError();
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} event The error event.
+ */
+ol.source.TileJSON.prototype.onXHRError_ = function(event) {
+ this.handleTileJSONError();
+};
+
+
+/**
+ * @return {TileJSON} The tilejson object.
+ * @api
+ */
+ol.source.TileJSON.prototype.getTileJSON = function() {
+ return this.tileJSON_;
+};
+
+
+/**
+ * @protected
+ * @param {TileJSON} tileJSON Tile JSON.
+ */
+ol.source.TileJSON.prototype.handleTileJSONResponse = function(tileJSON) {
+
+ var epsg4326Projection = ol.proj.get('EPSG:4326');
+
+ var sourceProjection = this.getProjection();
+ var extent;
+ if (tileJSON.bounds !== undefined) {
+ var transform = ol.proj.getTransformFromProjections(
+ epsg4326Projection, sourceProjection);
+ extent = ol.extent.applyTransform(tileJSON.bounds, transform);
+ }
+
+ if (tileJSON.scheme !== undefined) {
+ goog.asserts.assert(tileJSON.scheme == 'xyz', 'tileJSON-scheme is "xyz"');
+ }
+ var minZoom = tileJSON.minzoom || 0;
+ var maxZoom = tileJSON.maxzoom || 22;
+ var tileGrid = ol.tilegrid.createXYZ({
+ extent: ol.tilegrid.extentFromProjection(sourceProjection),
+ maxZoom: maxZoom,
+ minZoom: minZoom
+ });
+ this.tileGrid = tileGrid;
+
+ this.tileUrlFunction =
+ ol.TileUrlFunction.createFromTemplates(tileJSON.tiles, tileGrid);
+
+ if (tileJSON.attribution !== undefined && !this.getAttributions()) {
+ var attributionExtent = extent !== undefined ?
+ extent : epsg4326Projection.getExtent();
+ /** @type {Object.<string, Array.<ol.TileRange>>} */
+ var tileRanges = {};
+ var z, zKey;
+ for (z = minZoom; z <= maxZoom; ++z) {
+ zKey = z.toString();
+ tileRanges[zKey] =
+ [tileGrid.getTileRangeForExtentAndZ(attributionExtent, z)];
+ }
+ this.setAttributions([
+ new ol.Attribution({
+ html: tileJSON.attribution,
+ tileRanges: tileRanges
+ })
+ ]);
+ }
+ this.tileJSON_ = tileJSON;
+ this.setState(ol.source.State.READY);
+
+};
+
+
+/**
+ * @protected
+ */
+ol.source.TileJSON.prototype.handleTileJSONError = function() {
+ this.setState(ol.source.State.ERROR);
+};
+
+goog.provide('ol.source.TileUTFGrid');
+
+goog.require('goog.asserts');
+goog.require('goog.async.nextTick');
+goog.require('ol.Attribution');
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.extent');
+goog.require('ol.net');
+goog.require('ol.proj');
+goog.require('ol.source.State');
+goog.require('ol.source.Tile');
+
+
+/**
+ * @classdesc
+ * Layer source for UTFGrid interaction data loaded from TileJSON format.
+ *
+ * @constructor
+ * @extends {ol.source.Tile}
+ * @param {olx.source.TileUTFGridOptions} options Source options.
+ * @api
+ */
+ol.source.TileUTFGrid = function(options) {
+ ol.source.Tile.call(this, {
+ projection: ol.proj.get('EPSG:3857'),
+ state: ol.source.State.LOADING
+ });
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.preemptive_ = options.preemptive !== undefined ?
+ options.preemptive : true;
+
+ /**
+ * @private
+ * @type {!ol.TileUrlFunctionType}
+ */
+ this.tileUrlFunction_ = ol.TileUrlFunction.nullTileUrlFunction;
+
+ /**
+ * @private
+ * @type {string|undefined}
+ */
+ this.template_ = undefined;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.jsonp_ = options.jsonp || false;
+
+ if (options.url) {
+ if (this.jsonp_) {
+ ol.net.jsonp(options.url, this.handleTileJSONResponse.bind(this),
+ this.handleTileJSONError.bind(this));
+ } else {
+ var client = new XMLHttpRequest();
+ client.addEventListener('load', this.onXHRLoad_.bind(this));
+ client.addEventListener('error', this.onXHRError_.bind(this));
+ client.open('GET', options.url);
+ client.send();
+ }
+ } else if (options.tileJSON) {
+ this.handleTileJSONResponse(options.tileJSON);
+ } else {
+ goog.asserts.fail('Either url or tileJSON options must be provided');
+ }
+};
+ol.inherits(ol.source.TileUTFGrid, ol.source.Tile);
+
+
+/**
+ * @private
+ * @param {Event} event The load event.
+ */
+ol.source.TileUTFGrid.prototype.onXHRLoad_ = function(event) {
+ var client = /** @type {XMLHttpRequest} */ (event.target);
+ if (client.status >= 200 && client.status < 300) {
+ var response;
+ try {
+ response = /** @type {TileJSON} */(JSON.parse(client.responseText));
+ } catch (err) {
+ this.handleTileJSONError();
+ return;
+ }
+ this.handleTileJSONResponse(response);
+ } else {
+ this.handleTileJSONError();
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} event The error event.
+ */
+ol.source.TileUTFGrid.prototype.onXHRError_ = function(event) {
+ this.handleTileJSONError();
+};
+
+
+/**
+ * Return the template from TileJSON.
+ * @return {string|undefined} The template from TileJSON.
+ * @api
+ */
+ol.source.TileUTFGrid.prototype.getTemplate = function() {
+ return this.template_;
+};
+
+
+/**
+ * Calls the callback (synchronously by default) with the available data
+ * for given coordinate and resolution (or `null` if not yet loaded or
+ * in case of an error).
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {function(this: T, *)} callback Callback.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @param {boolean=} opt_request If `true` the callback is always async.
+ * The tile data is requested if not yet loaded.
+ * @template T
+ * @api
+ */
+ol.source.TileUTFGrid.prototype.forDataAtCoordinateAndResolution = function(
+ coordinate, resolution, callback, opt_this, opt_request) {
+ if (this.tileGrid) {
+ var tileCoord = this.tileGrid.getTileCoordForCoordAndResolution(
+ coordinate, resolution);
+ var tile = /** @type {!ol.source.TileUTFGridTile_} */(this.getTile(
+ tileCoord[0], tileCoord[1], tileCoord[2], 1, this.getProjection()));
+ tile.forDataAtCoordinate(coordinate, callback, opt_this, opt_request);
+ } else {
+ if (opt_request === true) {
+ goog.async.nextTick(function() {
+ callback.call(opt_this, null);
+ });
+ } else {
+ callback.call(opt_this, null);
+ }
+ }
+};
+
+
+/**
+ * @protected
+ */
+ol.source.TileUTFGrid.prototype.handleTileJSONError = function() {
+ this.setState(ol.source.State.ERROR);
+};
+
+
+/**
+ * TODO: very similar to ol.source.TileJSON#handleTileJSONResponse
+ * @protected
+ * @param {TileJSON} tileJSON Tile JSON.
+ */
+ol.source.TileUTFGrid.prototype.handleTileJSONResponse = function(tileJSON) {
+
+ var epsg4326Projection = ol.proj.get('EPSG:4326');
+
+ var sourceProjection = this.getProjection();
+ var extent;
+ if (tileJSON.bounds !== undefined) {
+ var transform = ol.proj.getTransformFromProjections(
+ epsg4326Projection, sourceProjection);
+ extent = ol.extent.applyTransform(tileJSON.bounds, transform);
+ }
+
+ if (tileJSON.scheme !== undefined) {
+ goog.asserts.assert(tileJSON.scheme == 'xyz', 'tileJSON-scheme is "xyz"');
+ }
+ var minZoom = tileJSON.minzoom || 0;
+ var maxZoom = tileJSON.maxzoom || 22;
+ var tileGrid = ol.tilegrid.createXYZ({
+ extent: ol.tilegrid.extentFromProjection(sourceProjection),
+ maxZoom: maxZoom,
+ minZoom: minZoom
+ });
+ this.tileGrid = tileGrid;
+
+ this.template_ = tileJSON.template;
+
+ var grids = tileJSON.grids;
+ if (!grids) {
+ this.setState(ol.source.State.ERROR);
+ return;
+ }
+
+ this.tileUrlFunction_ =
+ ol.TileUrlFunction.createFromTemplates(grids, tileGrid);
+
+ if (tileJSON.attribution !== undefined) {
+ var attributionExtent = extent !== undefined ?
+ extent : epsg4326Projection.getExtent();
+ /** @type {Object.<string, Array.<ol.TileRange>>} */
+ var tileRanges = {};
+ var z, zKey;
+ for (z = minZoom; z <= maxZoom; ++z) {
+ zKey = z.toString();
+ tileRanges[zKey] =
+ [tileGrid.getTileRangeForExtentAndZ(attributionExtent, z)];
+ }
+ this.setAttributions([
+ new ol.Attribution({
+ html: tileJSON.attribution,
+ tileRanges: tileRanges
+ })
+ ]);
+ }
+
+ this.setState(ol.source.State.READY);
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileUTFGrid.prototype.getTile = function(z, x, y, pixelRatio, projection) {
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ if (this.tileCache.containsKey(tileCoordKey)) {
+ return /** @type {!ol.Tile} */ (this.tileCache.get(tileCoordKey));
+ } else {
+ goog.asserts.assert(projection, 'argument projection is truthy');
+ var tileCoord = [z, x, y];
+ var urlTileCoord =
+ this.getTileCoordForTileUrlFunction(tileCoord, projection);
+ var tileUrl = this.tileUrlFunction_(urlTileCoord, pixelRatio, projection);
+ var tile = new ol.source.TileUTFGridTile_(
+ tileCoord,
+ tileUrl !== undefined ? ol.TileState.IDLE : ol.TileState.EMPTY,
+ tileUrl !== undefined ? tileUrl : '',
+ this.tileGrid.getTileCoordExtent(tileCoord),
+ this.preemptive_,
+ this.jsonp_);
+ this.tileCache.set(tileCoordKey, tile);
+ return tile;
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileUTFGrid.prototype.useTile = function(z, x, y) {
+ var tileCoordKey = this.getKeyZXY(z, x, y);
+ if (this.tileCache.containsKey(tileCoordKey)) {
+ this.tileCache.get(tileCoordKey);
+ }
+};
+
+
+/**
+ * @constructor
+ * @extends {ol.Tile}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileState} state State.
+ * @param {string} src Image source URI.
+ * @param {ol.Extent} extent Extent of the tile.
+ * @param {boolean} preemptive Load the tile when visible (before it's needed).
+ * @param {boolean} jsonp Load the tile as a script.
+ * @private
+ */
+ol.source.TileUTFGridTile_ = function(tileCoord, state, src, extent, preemptive, jsonp) {
+
+ ol.Tile.call(this, tileCoord, state);
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.src_ = src;
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.extent_ = extent;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.preemptive_ = preemptive;
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.grid_ = null;
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.keys_ = null;
+
+ /**
+ * @private
+ * @type {Object.<string, Object>|undefined}
+ */
+ this.data_ = null;
+
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.jsonp_ = jsonp;
+
+};
+ol.inherits(ol.source.TileUTFGridTile_, ol.Tile);
+
+
+/**
+ * Get the image element for this tile.
+ * @param {Object=} opt_context Optional context. Only used for the DOM
+ * renderer.
+ * @return {Image} Image.
+ */
+ol.source.TileUTFGridTile_.prototype.getImage = function(opt_context) {
+ return null;
+};
+
+
+/**
+ * Synchronously returns data at given coordinate (if available).
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @return {*} The data.
+ */
+ol.source.TileUTFGridTile_.prototype.getData = function(coordinate) {
+ if (!this.grid_ || !this.keys_) {
+ return null;
+ }
+ var xRelative = (coordinate[0] - this.extent_[0]) /
+ (this.extent_[2] - this.extent_[0]);
+ var yRelative = (coordinate[1] - this.extent_[1]) /
+ (this.extent_[3] - this.extent_[1]);
+
+ var row = this.grid_[Math.floor((1 - yRelative) * this.grid_.length)];
+
+ if (typeof row !== 'string') {
+ return null;
+ }
+
+ var code = row.charCodeAt(Math.floor(xRelative * row.length));
+ if (code >= 93) {
+ code--;
+ }
+ if (code >= 35) {
+ code--;
+ }
+ code -= 32;
+
+ var data = null;
+ if (code in this.keys_) {
+ var id = this.keys_[code];
+ if (this.data_ && id in this.data_) {
+ data = this.data_[id];
+ } else {
+ data = id;
+ }
+ }
+ return data;
+};
+
+
+/**
+ * Calls the callback (synchronously by default) with the available data
+ * for given coordinate (or `null` if not yet loaded).
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {function(this: T, *)} callback Callback.
+ * @param {T=} opt_this The object to use as `this` in the callback.
+ * @param {boolean=} opt_request If `true` the callback is always async.
+ * The tile data is requested if not yet loaded.
+ * @template T
+ */
+ol.source.TileUTFGridTile_.prototype.forDataAtCoordinate = function(coordinate, callback, opt_this, opt_request) {
+ if (this.state == ol.TileState.IDLE && opt_request === true) {
+ ol.events.listenOnce(this, ol.events.EventType.CHANGE, function(e) {
+ callback.call(opt_this, this.getData(coordinate));
+ }, this);
+ this.loadInternal_();
+ } else {
+ if (opt_request === true) {
+ goog.async.nextTick(function() {
+ callback.call(opt_this, this.getData(coordinate));
+ }, this);
+ } else {
+ callback.call(opt_this, this.getData(coordinate));
+ }
+ }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileUTFGridTile_.prototype.getKey = function() {
+ return this.src_;
+};
+
+
+/**
+ * @private
+ */
+ol.source.TileUTFGridTile_.prototype.handleError_ = function() {
+ this.state = ol.TileState.ERROR;
+ this.changed();
+};
+
+
+/**
+ * @param {!UTFGridJSON} json UTFGrid data.
+ * @private
+ */
+ol.source.TileUTFGridTile_.prototype.handleLoad_ = function(json) {
+ this.grid_ = json.grid;
+ this.keys_ = json.keys;
+ this.data_ = json.data;
+
+ this.state = ol.TileState.EMPTY;
+ this.changed();
+};
+
+
+/**
+ * @private
+ */
+ol.source.TileUTFGridTile_.prototype.loadInternal_ = function() {
+ if (this.state == ol.TileState.IDLE) {
+ this.state = ol.TileState.LOADING;
+ if (this.jsonp_) {
+ ol.net.jsonp(this.src_, this.handleLoad_.bind(this),
+ this.handleError_.bind(this));
+ } else {
+ var client = new XMLHttpRequest();
+ client.addEventListener('load', this.onXHRLoad_.bind(this));
+ client.addEventListener('error', this.onXHRError_.bind(this));
+ client.open('GET', this.src_);
+ client.send();
+ }
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} event The load event.
+ */
+ol.source.TileUTFGridTile_.prototype.onXHRLoad_ = function(event) {
+ var client = /** @type {XMLHttpRequest} */ (event.target);
+ if (client.status >= 200 && client.status < 300) {
+ var response;
+ try {
+ response = /** @type {!UTFGridJSON} */(JSON.parse(client.responseText));
+ } catch (err) {
+ this.handleError_();
+ return;
+ }
+ this.handleLoad_(response);
+ } else {
+ this.handleError_();
+ }
+};
+
+
+/**
+ * @private
+ * @param {Event} event The error event.
+ */
+ol.source.TileUTFGridTile_.prototype.onXHRError_ = function(event) {
+ this.handleError_();
+};
+
+
+/**
+ * Load not yet loaded URI.
+ */
+ol.source.TileUTFGridTile_.prototype.load = function() {
+ if (this.preemptive_) {
+ this.loadInternal_();
+ }
+};
+
+// FIXME add minZoom support
+// FIXME add date line wrap (tile coord transform)
+// FIXME cannot be shared between maps with different projections
+
+goog.provide('ol.source.TileWMS');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.math');
+goog.require('ol.proj');
+goog.require('ol.size');
+goog.require('ol.source.TileImage');
+goog.require('ol.source.wms');
+goog.require('ol.source.wms.ServerType');
+goog.require('ol.tilecoord');
+goog.require('ol.string');
+goog.require('ol.uri');
+
+/**
+ * @classdesc
+ * Layer source for tile data from WMS servers.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.TileWMSOptions=} opt_options Tile WMS options.
+ * @api stable
+ */
+ol.source.TileWMS = function(opt_options) {
+
+ var options = opt_options || {};
+
+ var params = options.params || {};
+
+ var transparent = 'TRANSPARENT' in params ? params['TRANSPARENT'] : true;
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ opaque: !transparent,
+ projection: options.projection,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileGrid: options.tileGrid,
+ tileLoadFunction: options.tileLoadFunction,
+ url: options.url,
+ urls: options.urls,
+ wrapX: options.wrapX !== undefined ? options.wrapX : true
+ });
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.gutter_ = options.gutter !== undefined ? options.gutter : 0;
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.params_ = params;
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.v13_ = true;
+
+ /**
+ * @private
+ * @type {ol.source.wms.ServerType|undefined}
+ */
+ this.serverType_ =
+ /** @type {ol.source.wms.ServerType|undefined} */ (options.serverType);
+
+ /**
+ * @private
+ * @type {boolean}
+ */
+ this.hidpi_ = options.hidpi !== undefined ? options.hidpi : true;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.coordKeyPrefix_ = '';
+ this.resetCoordKeyPrefix_();
+
+ /**
+ * @private
+ * @type {ol.Extent}
+ */
+ this.tmpExtent_ = ol.extent.createEmpty();
+
+ this.updateV13_();
+ this.setKey(this.getKeyForParams_());
+
+};
+ol.inherits(ol.source.TileWMS, ol.source.TileImage);
+
+
+/**
+ * Return the GetFeatureInfo URL for the passed coordinate, resolution, and
+ * projection. Return `undefined` if the GetFeatureInfo URL cannot be
+ * constructed.
+ * @param {ol.Coordinate} coordinate Coordinate.
+ * @param {number} resolution Resolution.
+ * @param {ol.ProjectionLike} projection Projection.
+ * @param {!Object} params GetFeatureInfo params. `INFO_FORMAT` at least should
+ * be provided. If `QUERY_LAYERS` is not provided then the layers specified
+ * in the `LAYERS` parameter will be used. `VERSION` should not be
+ * specified here.
+ * @return {string|undefined} GetFeatureInfo URL.
+ * @api stable
+ */
+ol.source.TileWMS.prototype.getGetFeatureInfoUrl = function(coordinate, resolution, projection, params) {
+
+ goog.asserts.assert(!('VERSION' in params),
+ 'key VERSION is not allowed in params');
+
+ var projectionObj = ol.proj.get(projection);
+
+ var tileGrid = this.getTileGrid();
+ if (!tileGrid) {
+ tileGrid = this.getTileGridForProjection(projectionObj);
+ }
+
+ var tileCoord = tileGrid.getTileCoordForCoordAndResolution(
+ coordinate, resolution);
+
+ if (tileGrid.getResolutions().length <= tileCoord[0]) {
+ return undefined;
+ }
+
+ var tileResolution = tileGrid.getResolution(tileCoord[0]);
+ var tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent_);
+ var tileSize = ol.size.toSize(
+ tileGrid.getTileSize(tileCoord[0]), this.tmpSize);
+
+ var gutter = this.gutter_;
+ if (gutter !== 0) {
+ tileSize = ol.size.buffer(tileSize, gutter, this.tmpSize);
+ tileExtent = ol.extent.buffer(tileExtent,
+ tileResolution * gutter, tileExtent);
+ }
+
+ var baseParams = {
+ 'SERVICE': 'WMS',
+ 'VERSION': ol.DEFAULT_WMS_VERSION,
+ 'REQUEST': 'GetFeatureInfo',
+ 'FORMAT': 'image/png',
+ 'TRANSPARENT': true,
+ 'QUERY_LAYERS': this.params_['LAYERS']
+ };
+ ol.object.assign(baseParams, this.params_, params);
+
+ var x = Math.floor((coordinate[0] - tileExtent[0]) / tileResolution);
+ var y = Math.floor((tileExtent[3] - coordinate[1]) / tileResolution);
+
+ baseParams[this.v13_ ? 'I' : 'X'] = x;
+ baseParams[this.v13_ ? 'J' : 'Y'] = y;
+
+ return this.getRequestUrl_(tileCoord, tileSize, tileExtent,
+ 1, projectionObj, baseParams);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileWMS.prototype.getGutterInternal = function() {
+ return this.gutter_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileWMS.prototype.getKeyZXY = function(z, x, y) {
+ return this.coordKeyPrefix_ + ol.source.TileImage.prototype.getKeyZXY.call(this, z, x, y);
+};
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ * @api stable
+ */
+ol.source.TileWMS.prototype.getParams = function() {
+ return this.params_;
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.Size} tileSize Tile size.
+ * @param {ol.Extent} tileExtent Tile extent.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @param {Object} params Params.
+ * @return {string|undefined} Request URL.
+ * @private
+ */
+ol.source.TileWMS.prototype.getRequestUrl_ = function(tileCoord, tileSize, tileExtent,
+ pixelRatio, projection, params) {
+
+ var urls = this.urls;
+ if (!urls) {
+ return undefined;
+ }
+
+ params['WIDTH'] = tileSize[0];
+ params['HEIGHT'] = tileSize[1];
+
+ params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
+
+ if (!('STYLES' in this.params_)) {
+ params['STYLES'] = '';
+ }
+
+ if (pixelRatio != 1) {
+ switch (this.serverType_) {
+ case ol.source.wms.ServerType.GEOSERVER:
+ var dpi = (90 * pixelRatio + 0.5) | 0;
+ if ('FORMAT_OPTIONS' in params) {
+ params['FORMAT_OPTIONS'] += ';dpi:' + dpi;
+ } else {
+ params['FORMAT_OPTIONS'] = 'dpi:' + dpi;
+ }
+ break;
+ case ol.source.wms.ServerType.MAPSERVER:
+ params['MAP_RESOLUTION'] = 90 * pixelRatio;
+ break;
+ case ol.source.wms.ServerType.CARMENTA_SERVER:
+ case ol.source.wms.ServerType.QGIS:
+ params['DPI'] = 90 * pixelRatio;
+ break;
+ default:
+ goog.asserts.fail('unknown serverType configured');
+ break;
+ }
+ }
+
+ var axisOrientation = projection.getAxisOrientation();
+ var bbox = tileExtent;
+ if (this.v13_ && axisOrientation.substr(0, 2) == 'ne') {
+ var tmp;
+ tmp = tileExtent[0];
+ bbox[0] = tileExtent[1];
+ bbox[1] = tmp;
+ tmp = tileExtent[2];
+ bbox[2] = tileExtent[3];
+ bbox[3] = tmp;
+ }
+ params['BBOX'] = bbox.join(',');
+
+ var url;
+ if (urls.length == 1) {
+ url = urls[0];
+ } else {
+ var index = ol.math.modulo(ol.tilecoord.hash(tileCoord), urls.length);
+ url = urls[index];
+ }
+ return ol.uri.appendParams(url, params);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileWMS.prototype.getTilePixelRatio = function(pixelRatio) {
+ return (!this.hidpi_ || this.serverType_ === undefined) ? 1 : pixelRatio;
+};
+
+
+/**
+ * @private
+ */
+ol.source.TileWMS.prototype.resetCoordKeyPrefix_ = function() {
+ var i = 0;
+ var res = [];
+
+ if (this.urls) {
+ var j, jj;
+ for (j = 0, jj = this.urls.length; j < jj; ++j) {
+ res[i++] = this.urls[j];
+ }
+ }
+
+ this.coordKeyPrefix_ = res.join('#');
+};
+
+
+/**
+ * @private
+ * @return {string} The key for the current params.
+ */
+ol.source.TileWMS.prototype.getKeyForParams_ = function() {
+ var i = 0;
+ var res = [];
+ for (var key in this.params_) {
+ res[i++] = key + '-' + this.params_[key];
+ }
+ return res.join('/');
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.TileWMS.prototype.fixedTileUrlFunction = function(tileCoord, pixelRatio, projection) {
+
+ var tileGrid = this.getTileGrid();
+ if (!tileGrid) {
+ tileGrid = this.getTileGridForProjection(projection);
+ }
+
+ if (tileGrid.getResolutions().length <= tileCoord[0]) {
+ return undefined;
+ }
+
+ if (pixelRatio != 1 && (!this.hidpi_ || this.serverType_ === undefined)) {
+ pixelRatio = 1;
+ }
+
+ var tileResolution = tileGrid.getResolution(tileCoord[0]);
+ var tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent_);
+ var tileSize = ol.size.toSize(
+ tileGrid.getTileSize(tileCoord[0]), this.tmpSize);
+
+ var gutter = this.gutter_;
+ if (gutter !== 0) {
+ tileSize = ol.size.buffer(tileSize, gutter, this.tmpSize);
+ tileExtent = ol.extent.buffer(tileExtent,
+ tileResolution * gutter, tileExtent);
+ }
+
+ if (pixelRatio != 1) {
+ tileSize = ol.size.scale(tileSize, pixelRatio, this.tmpSize);
+ }
+
+ var baseParams = {
+ 'SERVICE': 'WMS',
+ 'VERSION': ol.DEFAULT_WMS_VERSION,
+ 'REQUEST': 'GetMap',
+ 'FORMAT': 'image/png',
+ 'TRANSPARENT': true
+ };
+ ol.object.assign(baseParams, this.params_);
+
+ return this.getRequestUrl_(tileCoord, tileSize, tileExtent,
+ pixelRatio, projection, baseParams);
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ * @api stable
+ */
+ol.source.TileWMS.prototype.updateParams = function(params) {
+ ol.object.assign(this.params_, params);
+ this.resetCoordKeyPrefix_();
+ this.updateV13_();
+ this.setKey(this.getKeyForParams_());
+};
+
+
+/**
+ * @private
+ */
+ol.source.TileWMS.prototype.updateV13_ = function() {
+ var version = this.params_['VERSION'] || ol.DEFAULT_WMS_VERSION;
+ this.v13_ = ol.string.compareVersions(version, '1.3') >= 0;
+};
+
+goog.provide('ol.tilegrid.WMTS');
+
+goog.require('goog.asserts');
+goog.require('ol.proj');
+goog.require('ol.tilegrid.TileGrid');
+
+
+/**
+ * @classdesc
+ * Set the grid pattern for sources accessing WMTS tiled-image servers.
+ *
+ * @constructor
+ * @extends {ol.tilegrid.TileGrid}
+ * @param {olx.tilegrid.WMTSOptions} options WMTS options.
+ * @struct
+ * @api
+ */
+ol.tilegrid.WMTS = function(options) {
+
+ goog.asserts.assert(
+ options.resolutions.length == options.matrixIds.length,
+ 'options resolutions and matrixIds must have equal length (%s == %s)',
+ options.resolutions.length, options.matrixIds.length);
+
+ /**
+ * @private
+ * @type {!Array.<string>}
+ */
+ this.matrixIds_ = options.matrixIds;
+ // FIXME: should the matrixIds become optionnal?
+
+ ol.tilegrid.TileGrid.call(this, {
+ extent: options.extent,
+ origin: options.origin,
+ origins: options.origins,
+ resolutions: options.resolutions,
+ tileSize: options.tileSize,
+ tileSizes: options.tileSizes,
+ sizes: options.sizes
+ });
+
+};
+ol.inherits(ol.tilegrid.WMTS, ol.tilegrid.TileGrid);
+
+
+/**
+ * @param {number} z Z.
+ * @return {string} MatrixId..
+ */
+ol.tilegrid.WMTS.prototype.getMatrixId = function(z) {
+ goog.asserts.assert(0 <= z && z < this.matrixIds_.length,
+ 'attempted to retrive matrixId for illegal z (%s)', z);
+ return this.matrixIds_[z];
+};
+
+
+/**
+ * Get the list of matrix identifiers.
+ * @return {Array.<string>} MatrixIds.
+ * @api
+ */
+ol.tilegrid.WMTS.prototype.getMatrixIds = function() {
+ return this.matrixIds_;
+};
+
+
+/**
+ * Create a tile grid from a WMTS capabilities matrix set.
+ * @param {Object} matrixSet An object representing a matrixSet in the
+ * capabilities document.
+ * @param {ol.Extent=} opt_extent An optional extent to restrict the tile
+ * ranges the server provides.
+ * @return {ol.tilegrid.WMTS} WMTS tileGrid instance.
+ * @api
+ */
+ol.tilegrid.WMTS.createFromCapabilitiesMatrixSet = function(matrixSet, opt_extent) {
+
+ /** @type {!Array.<number>} */
+ var resolutions = [];
+ /** @type {!Array.<string>} */
+ var matrixIds = [];
+ /** @type {!Array.<ol.Coordinate>} */
+ var origins = [];
+ /** @type {!Array.<ol.Size>} */
+ var tileSizes = [];
+ /** @type {!Array.<ol.Size>} */
+ var sizes = [];
+
+ var supportedCRSPropName = 'SupportedCRS';
+ var matrixIdsPropName = 'TileMatrix';
+ var identifierPropName = 'Identifier';
+ var scaleDenominatorPropName = 'ScaleDenominator';
+ var topLeftCornerPropName = 'TopLeftCorner';
+ var tileWidthPropName = 'TileWidth';
+ var tileHeightPropName = 'TileHeight';
+
+ var projection;
+ projection = ol.proj.get(matrixSet[supportedCRSPropName].replace(
+ /urn:ogc:def:crs:(\w+):(.*:)?(\w+)$/, '$1:$3'));
+ var metersPerUnit = projection.getMetersPerUnit();
+ // swap origin x and y coordinates if axis orientation is lat/long
+ var switchOriginXY = projection.getAxisOrientation().substr(0, 2) == 'ne';
+
+ matrixSet[matrixIdsPropName].sort(function(a, b) {
+ return b[scaleDenominatorPropName] - a[scaleDenominatorPropName];
+ });
+
+ matrixSet[matrixIdsPropName].forEach(function(elt, index, array) {
+ matrixIds.push(elt[identifierPropName]);
+ var resolution = elt[scaleDenominatorPropName] * 0.28E-3 / metersPerUnit;
+ var tileWidth = elt[tileWidthPropName];
+ var tileHeight = elt[tileHeightPropName];
+ if (switchOriginXY) {
+ origins.push([elt[topLeftCornerPropName][1],
+ elt[topLeftCornerPropName][0]]);
+ } else {
+ origins.push(elt[topLeftCornerPropName]);
+ }
+ resolutions.push(resolution);
+ tileSizes.push(tileWidth == tileHeight ?
+ tileWidth : [tileWidth, tileHeight]);
+ // top-left origin, so height is negative
+ sizes.push([elt['MatrixWidth'], -elt['MatrixHeight']]);
+ });
+
+ return new ol.tilegrid.WMTS({
+ extent: opt_extent,
+ origins: origins,
+ resolutions: resolutions,
+ matrixIds: matrixIds,
+ tileSizes: tileSizes,
+ sizes: sizes
+ });
+};
+
+goog.provide('ol.source.WMTS');
+
+goog.require('goog.asserts');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.array');
+goog.require('ol.extent');
+goog.require('ol.object');
+goog.require('ol.proj');
+goog.require('ol.source.TileImage');
+goog.require('ol.tilegrid.WMTS');
+goog.require('ol.uri');
+
+
+/**
+ * Request encoding. One of 'KVP', 'REST'.
+ * @enum {string}
+ */
+ol.source.WMTSRequestEncoding = {
+ KVP: 'KVP', // see spec §8
+ REST: 'REST' // see spec §10
+};
+
+
+/**
+ * @classdesc
+ * Layer source for tile data from WMTS servers.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.WMTSOptions} options WMTS options.
+ * @api stable
+ */
+ol.source.WMTS = function(options) {
+
+ // TODO: add support for TileMatrixLimits
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.version_ = options.version !== undefined ? options.version : '1.0.0';
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.format_ = options.format !== undefined ? options.format : 'image/jpeg';
+
+ /**
+ * @private
+ * @type {!Object}
+ */
+ this.dimensions_ = options.dimensions !== undefined ? options.dimensions : {};
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.layer_ = options.layer;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.matrixSet_ = options.matrixSet;
+
+ /**
+ * @private
+ * @type {string}
+ */
+ this.style_ = options.style;
+
+ var urls = options.urls;
+ if (urls === undefined && options.url !== undefined) {
+ urls = ol.TileUrlFunction.expandUrl(options.url);
+ }
+
+ // FIXME: should we guess this requestEncoding from options.url(s)
+ // structure? that would mean KVP only if a template is not provided.
+
+ /**
+ * @private
+ * @type {ol.source.WMTSRequestEncoding}
+ */
+ this.requestEncoding_ = options.requestEncoding !== undefined ?
+ /** @type {ol.source.WMTSRequestEncoding} */ (options.requestEncoding) :
+ ol.source.WMTSRequestEncoding.KVP;
+
+ var requestEncoding = this.requestEncoding_;
+
+ // FIXME: should we create a default tileGrid?
+ // we could issue a getCapabilities xhr to retrieve missing configuration
+ var tileGrid = options.tileGrid;
+
+ // context property names are lower case to allow for a case insensitive
+ // replacement as some services use different naming conventions
+ var context = {
+ 'layer': this.layer_,
+ 'style': this.style_,
+ 'tilematrixset': this.matrixSet_
+ };
+
+ if (requestEncoding == ol.source.WMTSRequestEncoding.KVP) {
+ ol.object.assign(context, {
+ 'Service': 'WMTS',
+ 'Request': 'GetTile',
+ 'Version': this.version_,
+ 'Format': this.format_
+ });
+ }
+
+ var dimensions = this.dimensions_;
+
+ /**
+ * @param {string} template Template.
+ * @return {ol.TileUrlFunctionType} Tile URL function.
+ */
+ function createFromWMTSTemplate(template) {
+
+ // TODO: we may want to create our own appendParams function so that params
+ // order conforms to wmts spec guidance, and so that we can avoid to escape
+ // special template params
+
+ template = (requestEncoding == ol.source.WMTSRequestEncoding.KVP) ?
+ ol.uri.appendParams(template, context) :
+ template.replace(/\{(\w+?)\}/g, function(m, p) {
+ return (p.toLowerCase() in context) ? context[p.toLowerCase()] : m;
+ });
+
+ return (
+ /**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ function(tileCoord, pixelRatio, projection) {
+ if (!tileCoord) {
+ return undefined;
+ } else {
+ var localContext = {
+ 'TileMatrix': tileGrid.getMatrixId(tileCoord[0]),
+ 'TileCol': tileCoord[1],
+ 'TileRow': -tileCoord[2] - 1
+ };
+ ol.object.assign(localContext, dimensions);
+ var url = template;
+ if (requestEncoding == ol.source.WMTSRequestEncoding.KVP) {
+ url = ol.uri.appendParams(url, localContext);
+ } else {
+ url = url.replace(/\{(\w+?)\}/g, function(m, p) {
+ return localContext[p];
+ });
+ }
+ return url;
+ }
+ });
+ }
+
+ var tileUrlFunction = (urls && urls.length > 0) ?
+ ol.TileUrlFunction.createFromTileUrlFunctions(
+ urls.map(createFromWMTSTemplate)) :
+ ol.TileUrlFunction.nullTileUrlFunction;
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ projection: options.projection,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileClass: options.tileClass,
+ tileGrid: tileGrid,
+ tileLoadFunction: options.tileLoadFunction,
+ tilePixelRatio: options.tilePixelRatio,
+ tileUrlFunction: tileUrlFunction,
+ urls: urls,
+ wrapX: options.wrapX !== undefined ? options.wrapX : false
+ });
+
+ this.setKey(this.getKeyForDimensions_());
+
+};
+ol.inherits(ol.source.WMTS, ol.source.TileImage);
+
+
+/**
+ * Get the dimensions, i.e. those passed to the constructor through the
+ * "dimensions" option, and possibly updated using the updateDimensions
+ * method.
+ * @return {!Object} Dimensions.
+ * @api
+ */
+ol.source.WMTS.prototype.getDimensions = function() {
+ return this.dimensions_;
+};
+
+
+/**
+ * Return the image format of the WMTS source.
+ * @return {string} Format.
+ * @api
+ */
+ol.source.WMTS.prototype.getFormat = function() {
+ return this.format_;
+};
+
+
+/**
+ * Return the layer of the WMTS source.
+ * @return {string} Layer.
+ * @api
+ */
+ol.source.WMTS.prototype.getLayer = function() {
+ return this.layer_;
+};
+
+
+/**
+ * Return the matrix set of the WMTS source.
+ * @return {string} MatrixSet.
+ * @api
+ */
+ol.source.WMTS.prototype.getMatrixSet = function() {
+ return this.matrixSet_;
+};
+
+
+/**
+ * Return the request encoding, either "KVP" or "REST".
+ * @return {ol.source.WMTSRequestEncoding} Request encoding.
+ * @api
+ */
+ol.source.WMTS.prototype.getRequestEncoding = function() {
+ return this.requestEncoding_;
+};
+
+
+/**
+ * Return the style of the WMTS source.
+ * @return {string} Style.
+ * @api
+ */
+ol.source.WMTS.prototype.getStyle = function() {
+ return this.style_;
+};
+
+
+/**
+ * Return the version of the WMTS source.
+ * @return {string} Version.
+ * @api
+ */
+ol.source.WMTS.prototype.getVersion = function() {
+ return this.version_;
+};
+
+
+/**
+ * @private
+ * @return {string} The key for the current dimensions.
+ */
+ol.source.WMTS.prototype.getKeyForDimensions_ = function() {
+ var i = 0;
+ var res = [];
+ for (var key in this.dimensions_) {
+ res[i++] = key + '-' + this.dimensions_[key];
+ }
+ return res.join('/');
+};
+
+
+/**
+ * Update the dimensions.
+ * @param {Object} dimensions Dimensions.
+ * @api
+ */
+ol.source.WMTS.prototype.updateDimensions = function(dimensions) {
+ ol.object.assign(this.dimensions_, dimensions);
+ this.setKey(this.getKeyForDimensions_());
+};
+
+
+/**
+ * Generate source options from a capabilities object.
+ * @param {Object} wmtsCap An object representing the capabilities document.
+ * @param {Object} config Configuration properties for the layer. Defaults for
+ * the layer will apply if not provided.
+ *
+ * Required config properties:
+ * - layer - {string} The layer identifier.
+ *
+ * Optional config properties:
+ * - matrixSet - {string} The matrix set identifier, required if there is
+ * more than one matrix set in the layer capabilities.
+ * - projection - {string} The desired CRS when no matrixSet is specified.
+ * eg: "EPSG:3857". If the desired projection is not available,
+ * an error is thrown.
+ * - requestEncoding - {string} url encoding format for the layer. Default is
+ * the first tile url format found in the GetCapabilities response.
+ * - style - {string} The name of the style
+ * - format - {string} Image format for the layer. Default is the first
+ * format returned in the GetCapabilities response.
+ * @return {olx.source.WMTSOptions} WMTS source options object.
+ * @api
+ */
+ol.source.WMTS.optionsFromCapabilities = function(wmtsCap, config) {
+
+ // TODO: add support for TileMatrixLimits
+ goog.asserts.assert(config['layer'],
+ 'config "layer" must not be null');
+
+ var layers = wmtsCap['Contents']['Layer'];
+ var l = ol.array.find(layers, function(elt, index, array) {
+ return elt['Identifier'] == config['layer'];
+ });
+ goog.asserts.assert(l, 'found a matching layer in Contents/Layer');
+
+ goog.asserts.assert(l['TileMatrixSetLink'].length > 0,
+ 'layer has TileMatrixSetLink');
+ var tileMatrixSets = wmtsCap['Contents']['TileMatrixSet'];
+ var idx, matrixSet;
+ if (l['TileMatrixSetLink'].length > 1) {
+ if ('projection' in config) {
+ idx = ol.array.findIndex(l['TileMatrixSetLink'],
+ function(elt, index, array) {
+ var tileMatrixSet = ol.array.find(tileMatrixSets, function(el) {
+ return el['Identifier'] == elt['TileMatrixSet'];
+ });
+ return tileMatrixSet['SupportedCRS'].replace(
+ /urn:ogc:def:crs:(\w+):(.*:)?(\w+)$/, '$1:$3'
+ ) == config['projection'];
+ });
+ } else {
+ idx = ol.array.findIndex(l['TileMatrixSetLink'],
+ function(elt, index, array) {
+ return elt['TileMatrixSet'] == config['matrixSet'];
+ });
+ }
+ } else {
+ idx = 0;
+ }
+ if (idx < 0) {
+ idx = 0;
+ }
+ matrixSet = /** @type {string} */
+ (l['TileMatrixSetLink'][idx]['TileMatrixSet']);
+
+ goog.asserts.assert(matrixSet, 'TileMatrixSet must not be null');
+
+ var format = /** @type {string} */ (l['Format'][0]);
+ if ('format' in config) {
+ format = config['format'];
+ }
+ idx = ol.array.findIndex(l['Style'], function(elt, index, array) {
+ if ('style' in config) {
+ return elt['Title'] == config['style'];
+ } else {
+ return elt['isDefault'];
+ }
+ });
+ if (idx < 0) {
+ idx = 0;
+ }
+ var style = /** @type {string} */ (l['Style'][idx]['Identifier']);
+
+ var dimensions = {};
+ if ('Dimension' in l) {
+ l['Dimension'].forEach(function(elt, index, array) {
+ var key = elt['Identifier'];
+ var value = elt['Default'];
+ if (value !== undefined) {
+ goog.asserts.assert(ol.array.includes(elt['Value'], value),
+ 'default value contained in values');
+ } else {
+ value = elt['Value'][0];
+ }
+ goog.asserts.assert(value !== undefined, 'value could be found');
+ dimensions[key] = value;
+ });
+ }
+
+ var matrixSets = wmtsCap['Contents']['TileMatrixSet'];
+ var matrixSetObj = ol.array.find(matrixSets, function(elt, index, array) {
+ return elt['Identifier'] == matrixSet;
+ });
+ goog.asserts.assert(matrixSetObj,
+ 'found matrixSet in Contents/TileMatrixSet');
+
+ var projection;
+ if ('projection' in config) {
+ projection = ol.proj.get(config['projection']);
+ } else {
+ projection = ol.proj.get(matrixSetObj['SupportedCRS'].replace(
+ /urn:ogc:def:crs:(\w+):(.*:)?(\w+)$/, '$1:$3'));
+ }
+
+ var wgs84BoundingBox = l['WGS84BoundingBox'];
+ var extent, wrapX;
+ if (wgs84BoundingBox !== undefined) {
+ var wgs84ProjectionExtent = ol.proj.get('EPSG:4326').getExtent();
+ wrapX = (wgs84BoundingBox[0] == wgs84ProjectionExtent[0] &&
+ wgs84BoundingBox[2] == wgs84ProjectionExtent[2]);
+ extent = ol.proj.transformExtent(
+ wgs84BoundingBox, 'EPSG:4326', projection);
+ var projectionExtent = projection.getExtent();
+ if (projectionExtent) {
+ // If possible, do a sanity check on the extent - it should never be
+ // bigger than the validity extent of the projection of a matrix set.
+ if (!ol.extent.containsExtent(projectionExtent, extent)) {
+ extent = undefined;
+ }
+ }
+ }
+
+ var tileGrid = ol.tilegrid.WMTS.createFromCapabilitiesMatrixSet(
+ matrixSetObj, extent);
+
+ /** @type {!Array.<string>} */
+ var urls = [];
+ var requestEncoding = config['requestEncoding'];
+ requestEncoding = requestEncoding !== undefined ? requestEncoding : '';
+
+ goog.asserts.assert(
+ ol.array.includes(['REST', 'RESTful', 'KVP', ''], requestEncoding),
+ 'requestEncoding (%s) is one of "REST", "RESTful", "KVP" or ""',
+ requestEncoding);
+
+ if ('OperationsMetadata' in wmtsCap && 'GetTile' in wmtsCap['OperationsMetadata']) {
+ var gets = wmtsCap['OperationsMetadata']['GetTile']['DCP']['HTTP']['Get'];
+ goog.asserts.assert(gets.length >= 1);
+
+ for (var i = 0, ii = gets.length; i < ii; ++i) {
+ var constraint = ol.array.find(gets[i]['Constraint'], function(element) {
+ return element['name'] == 'GetEncoding';
+ });
+ var encodings = constraint['AllowedValues']['Value'];
+ goog.asserts.assert(encodings.length >= 1);
+
+ if (requestEncoding === '') {
+ // requestEncoding not provided, use the first encoding from the list
+ requestEncoding = encodings[0];
+ }
+ if (requestEncoding === ol.source.WMTSRequestEncoding.KVP) {
+ if (ol.array.includes(encodings, ol.source.WMTSRequestEncoding.KVP)) {
+ urls.push(/** @type {string} */ (gets[i]['href']));
+ }
+ } else {
+ break;
+ }
+ }
+ }
+ if (urls.length === 0) {
+ requestEncoding = ol.source.WMTSRequestEncoding.REST;
+ l['ResourceURL'].forEach(function(element) {
+ if (element['resourceType'] === 'tile') {
+ format = element['format'];
+ urls.push(/** @type {string} */ (element['template']));
+ }
+ });
+ }
+ goog.asserts.assert(urls.length > 0, 'At least one URL found');
+
+ return {
+ urls: urls,
+ layer: config['layer'],
+ matrixSet: matrixSet,
+ format: format,
+ projection: projection,
+ requestEncoding: requestEncoding,
+ tileGrid: tileGrid,
+ style: style,
+ dimensions: dimensions,
+ wrapX: wrapX
+ };
+
+};
+
+goog.provide('ol.source.Zoomify');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.ImageTile');
+goog.require('ol.TileState');
+goog.require('ol.dom');
+goog.require('ol.extent');
+goog.require('ol.proj');
+goog.require('ol.source.TileImage');
+goog.require('ol.tilegrid.TileGrid');
+
+
+/**
+ * @enum {string}
+ */
+ol.source.ZoomifyTierSizeCalculation = {
+ DEFAULT: 'default',
+ TRUNCATED: 'truncated'
+};
+
+
+/**
+ * @classdesc
+ * Layer source for tile data in Zoomify format.
+ *
+ * @constructor
+ * @extends {ol.source.TileImage}
+ * @param {olx.source.ZoomifyOptions=} opt_options Options.
+ * @api stable
+ */
+ol.source.Zoomify = function(opt_options) {
+
+ var options = opt_options || {};
+
+ var size = options.size;
+ var tierSizeCalculation = options.tierSizeCalculation !== undefined ?
+ options.tierSizeCalculation :
+ ol.source.ZoomifyTierSizeCalculation.DEFAULT;
+
+ var imageWidth = size[0];
+ var imageHeight = size[1];
+ var tierSizeInTiles = [];
+ var tileSize = ol.DEFAULT_TILE_SIZE;
+
+ switch (tierSizeCalculation) {
+ case ol.source.ZoomifyTierSizeCalculation.DEFAULT:
+ while (imageWidth > tileSize || imageHeight > tileSize) {
+ tierSizeInTiles.push([
+ Math.ceil(imageWidth / tileSize),
+ Math.ceil(imageHeight / tileSize)
+ ]);
+ tileSize += tileSize;
+ }
+ break;
+ case ol.source.ZoomifyTierSizeCalculation.TRUNCATED:
+ var width = imageWidth;
+ var height = imageHeight;
+ while (width > tileSize || height > tileSize) {
+ tierSizeInTiles.push([
+ Math.ceil(width / tileSize),
+ Math.ceil(height / tileSize)
+ ]);
+ width >>= 1;
+ height >>= 1;
+ }
+ break;
+ default:
+ goog.asserts.fail();
+ break;
+ }
+
+ tierSizeInTiles.push([1, 1]);
+ tierSizeInTiles.reverse();
+
+ var resolutions = [1];
+ var tileCountUpToTier = [0];
+ var i, ii;
+ for (i = 1, ii = tierSizeInTiles.length; i < ii; i++) {
+ resolutions.push(1 << i);
+ tileCountUpToTier.push(
+ tierSizeInTiles[i - 1][0] * tierSizeInTiles[i - 1][1] +
+ tileCountUpToTier[i - 1]
+ );
+ }
+ resolutions.reverse();
+
+ var extent = [0, -size[1], size[0], 0];
+ var tileGrid = new ol.tilegrid.TileGrid({
+ extent: extent,
+ origin: ol.extent.getTopLeft(extent),
+ resolutions: resolutions
+ });
+
+ var url = options.url;
+
+ /**
+ * @this {ol.source.TileImage}
+ * @param {ol.TileCoord} tileCoord Tile Coordinate.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {string|undefined} Tile URL.
+ */
+ function tileUrlFunction(tileCoord, pixelRatio, projection) {
+ if (!tileCoord) {
+ return undefined;
+ } else {
+ var tileCoordZ = tileCoord[0];
+ var tileCoordX = tileCoord[1];
+ var tileCoordY = -tileCoord[2] - 1;
+ var tileIndex =
+ tileCoordX +
+ tileCoordY * tierSizeInTiles[tileCoordZ][0] +
+ tileCountUpToTier[tileCoordZ];
+ var tileGroup = (tileIndex / ol.DEFAULT_TILE_SIZE) | 0;
+ return url + 'TileGroup' + tileGroup + '/' +
+ tileCoordZ + '-' + tileCoordX + '-' + tileCoordY + '.jpg';
+ }
+ }
+
+ ol.source.TileImage.call(this, {
+ attributions: options.attributions,
+ cacheSize: options.cacheSize,
+ crossOrigin: options.crossOrigin,
+ logo: options.logo,
+ reprojectionErrorThreshold: options.reprojectionErrorThreshold,
+ tileClass: ol.source.ZoomifyTile_,
+ tileGrid: tileGrid,
+ tileUrlFunction: tileUrlFunction
+ });
+
+};
+ol.inherits(ol.source.Zoomify, ol.source.TileImage);
+
+
+/**
+ * @constructor
+ * @extends {ol.ImageTile}
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @param {ol.TileState} state State.
+ * @param {string} src Image source URI.
+ * @param {?string} crossOrigin Cross origin.
+ * @param {ol.TileLoadFunctionType} tileLoadFunction Tile load function.
+ * @private
+ */
+ol.source.ZoomifyTile_ = function(
+ tileCoord, state, src, crossOrigin, tileLoadFunction) {
+
+ ol.ImageTile.call(this, tileCoord, state, src, crossOrigin, tileLoadFunction);
+
+ /**
+ * @private
+ * @type {Object.<string,
+ * HTMLCanvasElement|HTMLImageElement|HTMLVideoElement>}
+ */
+ this.zoomifyImageByContext_ = {};
+
+};
+ol.inherits(ol.source.ZoomifyTile_, ol.ImageTile);
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ZoomifyTile_.prototype.getImage = function(opt_context) {
+ var tileSize = ol.DEFAULT_TILE_SIZE;
+ var key = opt_context !== undefined ?
+ goog.getUid(opt_context).toString() : '';
+ if (key in this.zoomifyImageByContext_) {
+ return this.zoomifyImageByContext_[key];
+ } else {
+ var image = ol.ImageTile.prototype.getImage.call(this, opt_context);
+ if (this.state == ol.TileState.LOADED) {
+ if (image.width == tileSize && image.height == tileSize) {
+ this.zoomifyImageByContext_[key] = image;
+ return image;
+ } else {
+ var context = ol.dom.createCanvasContext2D(tileSize, tileSize);
+ context.drawImage(image, 0, 0);
+ this.zoomifyImageByContext_[key] = context.canvas;
+ return context.canvas;
+ }
+ } else {
+ return image;
+ }
+ }
+};
+
+goog.provide('ol.style.Atlas');
+goog.provide('ol.style.AtlasManager');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.dom');
+
+
+/**
+ * Manages the creation of image atlases.
+ *
+ * Images added to this manager will be inserted into an atlas, which
+ * will be used for rendering.
+ * The `size` given in the constructor is the size for the first
+ * atlas. After that, when new atlases are created, they will have
+ * twice the size as the latest atlas (until `maxSize` is reached).
+ *
+ * If an application uses many images or very large images, it is recommended
+ * to set a higher `size` value to avoid the creation of too many atlases.
+ *
+ * @constructor
+ * @struct
+ * @api
+ * @param {olx.style.AtlasManagerOptions=} opt_options Options.
+ */
+ol.style.AtlasManager = function(opt_options) {
+
+ var options = opt_options || {};
+
+ /**
+ * The size in pixels of the latest atlas image.
+ * @private
+ * @type {number}
+ */
+ this.currentSize_ = options.initialSize !== undefined ?
+ options.initialSize : ol.INITIAL_ATLAS_SIZE;
+
+ /**
+ * The maximum size in pixels of atlas images.
+ * @private
+ * @type {number}
+ */
+ this.maxSize_ = options.maxSize !== undefined ?
+ options.maxSize : ol.MAX_ATLAS_SIZE != -1 ?
+ ol.MAX_ATLAS_SIZE : ol.WEBGL_MAX_TEXTURE_SIZE !== undefined ?
+ ol.WEBGL_MAX_TEXTURE_SIZE : 2048;
+
+ /**
+ * The size in pixels between images.
+ * @private
+ * @type {number}
+ */
+ this.space_ = options.space !== undefined ? options.space : 1;
+
+ /**
+ * @private
+ * @type {Array.<ol.style.Atlas>}
+ */
+ this.atlases_ = [new ol.style.Atlas(this.currentSize_, this.space_)];
+
+ /**
+ * The size in pixels of the latest atlas image for hit-detection images.
+ * @private
+ * @type {number}
+ */
+ this.currentHitSize_ = this.currentSize_;
+
+ /**
+ * @private
+ * @type {Array.<ol.style.Atlas>}
+ */
+ this.hitAtlases_ = [new ol.style.Atlas(this.currentHitSize_, this.space_)];
+};
+
+
+/**
+ * @param {string} id The identifier of the entry to check.
+ * @return {?ol.AtlasManagerInfo} The position and atlas image for the
+ * entry, or `null` if the entry is not part of the atlas manager.
+ */
+ol.style.AtlasManager.prototype.getInfo = function(id) {
+ /** @type {?ol.AtlasInfo} */
+ var info = this.getInfo_(this.atlases_, id);
+
+ if (!info) {
+ return null;
+ }
+ /** @type {?ol.AtlasInfo} */
+ var hitInfo = this.getInfo_(this.hitAtlases_, id);
+ goog.asserts.assert(hitInfo, 'hitInfo must not be null');
+
+ return this.mergeInfos_(info, hitInfo);
+};
+
+
+/**
+ * @private
+ * @param {Array.<ol.style.Atlas>} atlases The atlases to search.
+ * @param {string} id The identifier of the entry to check.
+ * @return {?ol.AtlasInfo} The position and atlas image for the entry,
+ * or `null` if the entry is not part of the atlases.
+ */
+ol.style.AtlasManager.prototype.getInfo_ = function(atlases, id) {
+ var atlas, info, i, ii;
+ for (i = 0, ii = atlases.length; i < ii; ++i) {
+ atlas = atlases[i];
+ info = atlas.get(id);
+ if (info) {
+ return info;
+ }
+ }
+ return null;
+};
+
+
+/**
+ * @private
+ * @param {ol.AtlasInfo} info The info for the real image.
+ * @param {ol.AtlasInfo} hitInfo The info for the hit-detection
+ * image.
+ * @return {?ol.AtlasManagerInfo} The position and atlas image for the
+ * entry, or `null` if the entry is not part of the atlases.
+ */
+ol.style.AtlasManager.prototype.mergeInfos_ = function(info, hitInfo) {
+ goog.asserts.assert(info.offsetX === hitInfo.offsetX,
+ 'in order to merge, offsetX of info and hitInfo must be equal');
+ goog.asserts.assert(info.offsetY === hitInfo.offsetY,
+ 'in order to merge, offsetY of info and hitInfo must be equal');
+ return /** @type {ol.AtlasManagerInfo} */ ({
+ offsetX: info.offsetX,
+ offsetY: info.offsetY,
+ image: info.image,
+ hitImage: hitInfo.image
+ });
+};
+
+
+/**
+ * Add an image to the atlas manager.
+ *
+ * If an entry for the given id already exists, the entry will
+ * be overridden (but the space on the atlas graphic will not be freed).
+ *
+ * If `renderHitCallback` is provided, the image (or the hit-detection version
+ * of the image) will be rendered into a separate hit-detection atlas image.
+ *
+ * @param {string} id The identifier of the entry to add.
+ * @param {number} width The width.
+ * @param {number} height The height.
+ * @param {function(CanvasRenderingContext2D, number, number)} renderCallback
+ * Called to render the new image onto an atlas image.
+ * @param {function(CanvasRenderingContext2D, number, number)=}
+ * opt_renderHitCallback Called to render a hit-detection image onto a hit
+ * detection atlas image.
+ * @param {Object=} opt_this Value to use as `this` when executing
+ * `renderCallback` and `renderHitCallback`.
+ * @return {?ol.AtlasManagerInfo} The position and atlas image for the
+ * entry, or `null` if the image is too big.
+ */
+ol.style.AtlasManager.prototype.add = function(id, width, height,
+ renderCallback, opt_renderHitCallback, opt_this) {
+ if (width + this.space_ > this.maxSize_ ||
+ height + this.space_ > this.maxSize_) {
+ return null;
+ }
+
+ /** @type {?ol.AtlasInfo} */
+ var info = this.add_(false,
+ id, width, height, renderCallback, opt_this);
+ if (!info) {
+ return null;
+ }
+
+ // even if no hit-detection entry is requested, we insert a fake entry into
+ // the hit-detection atlas, to make sure that the offset is the same for
+ // the original image and the hit-detection image.
+ var renderHitCallback = opt_renderHitCallback !== undefined ?
+ opt_renderHitCallback : ol.nullFunction;
+
+ /** @type {?ol.AtlasInfo} */
+ var hitInfo = this.add_(true,
+ id, width, height, renderHitCallback, opt_this);
+ goog.asserts.assert(hitInfo, 'hitInfo must not be null');
+
+ return this.mergeInfos_(info, hitInfo);
+};
+
+
+/**
+ * @private
+ * @param {boolean} isHitAtlas If the hit-detection atlases are used.
+ * @param {string} id The identifier of the entry to add.
+ * @param {number} width The width.
+ * @param {number} height The height.
+ * @param {function(CanvasRenderingContext2D, number, number)} renderCallback
+ * Called to render the new image onto an atlas image.
+ * @param {Object=} opt_this Value to use as `this` when executing
+ * `renderCallback` and `renderHitCallback`.
+ * @return {?ol.AtlasInfo} The position and atlas image for the entry,
+ * or `null` if the image is too big.
+ */
+ol.style.AtlasManager.prototype.add_ = function(isHitAtlas, id, width, height,
+ renderCallback, opt_this) {
+ var atlases = (isHitAtlas) ? this.hitAtlases_ : this.atlases_;
+ var atlas, info, i, ii;
+ for (i = 0, ii = atlases.length; i < ii; ++i) {
+ atlas = atlases[i];
+ info = atlas.add(id, width, height, renderCallback, opt_this);
+ if (info) {
+ return info;
+ } else if (!info && i === ii - 1) {
+ // the entry could not be added to one of the existing atlases,
+ // create a new atlas that is twice as big and try to add to this one.
+ var size;
+ if (isHitAtlas) {
+ size = Math.min(this.currentHitSize_ * 2, this.maxSize_);
+ this.currentHitSize_ = size;
+ } else {
+ size = Math.min(this.currentSize_ * 2, this.maxSize_);
+ this.currentSize_ = size;
+ }
+ atlas = new ol.style.Atlas(size, this.space_);
+ atlases.push(atlas);
+ // run the loop another time
+ ++ii;
+ }
+ }
+ goog.asserts.fail('Failed to add to atlasmanager');
+};
+
+
+/**
+ * This class facilitates the creation of image atlases.
+ *
+ * Images added to an atlas will be rendered onto a single
+ * atlas canvas. The distribution of images on the canvas is
+ * managed with the bin packing algorithm described in:
+ * http://www.blackpawn.com/texts/lightmaps/
+ *
+ * @constructor
+ * @struct
+ * @param {number} size The size in pixels of the sprite image.
+ * @param {number} space The space in pixels between images.
+ * Because texture coordinates are float values, the edges of
+ * images might not be completely correct (in a way that the
+ * edges overlap when being rendered). To avoid this we add a
+ * padding around each image.
+ */
+ol.style.Atlas = function(size, space) {
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.space_ = space;
+
+ /**
+ * @private
+ * @type {Array.<ol.AtlasBlock>}
+ */
+ this.emptyBlocks_ = [{x: 0, y: 0, width: size, height: size}];
+
+ /**
+ * @private
+ * @type {Object.<string, ol.AtlasInfo>}
+ */
+ this.entries_ = {};
+
+ /**
+ * @private
+ * @type {CanvasRenderingContext2D}
+ */
+ this.context_ = ol.dom.createCanvasContext2D(size, size);
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = this.context_.canvas;
+};
+
+
+/**
+ * @param {string} id The identifier of the entry to check.
+ * @return {?ol.AtlasInfo} The atlas info.
+ */
+ol.style.Atlas.prototype.get = function(id) {
+ return this.entries_[id] || null;
+};
+
+
+/**
+ * @param {string} id The identifier of the entry to add.
+ * @param {number} width The width.
+ * @param {number} height The height.
+ * @param {function(CanvasRenderingContext2D, number, number)} renderCallback
+ * Called to render the new image onto an atlas image.
+ * @param {Object=} opt_this Value to use as `this` when executing
+ * `renderCallback`.
+ * @return {?ol.AtlasInfo} The position and atlas image for the entry.
+ */
+ol.style.Atlas.prototype.add = function(id, width, height, renderCallback, opt_this) {
+ var block, i, ii;
+ for (i = 0, ii = this.emptyBlocks_.length; i < ii; ++i) {
+ block = this.emptyBlocks_[i];
+ if (block.width >= width + this.space_ &&
+ block.height >= height + this.space_) {
+ // we found a block that is big enough for our entry
+ var entry = {
+ offsetX: block.x + this.space_,
+ offsetY: block.y + this.space_,
+ image: this.canvas_
+ };
+ this.entries_[id] = entry;
+
+ // render the image on the atlas image
+ renderCallback.call(opt_this, this.context_,
+ block.x + this.space_, block.y + this.space_);
+
+ // split the block after the insertion, either horizontally or vertically
+ this.split_(i, block, width + this.space_, height + this.space_);
+
+ return entry;
+ }
+ }
+
+ // there is no space for the new entry in this atlas
+ return null;
+};
+
+
+/**
+ * @private
+ * @param {number} index The index of the block.
+ * @param {ol.AtlasBlock} block The block to split.
+ * @param {number} width The width of the entry to insert.
+ * @param {number} height The height of the entry to insert.
+ */
+ol.style.Atlas.prototype.split_ = function(index, block, width, height) {
+ var deltaWidth = block.width - width;
+ var deltaHeight = block.height - height;
+
+ /** @type {ol.AtlasBlock} */
+ var newBlock1;
+ /** @type {ol.AtlasBlock} */
+ var newBlock2;
+
+ if (deltaWidth > deltaHeight) {
+ // split vertically
+ // block right of the inserted entry
+ newBlock1 = {
+ x: block.x + width,
+ y: block.y,
+ width: block.width - width,
+ height: block.height
+ };
+
+ // block below the inserted entry
+ newBlock2 = {
+ x: block.x,
+ y: block.y + height,
+ width: width,
+ height: block.height - height
+ };
+ this.updateBlocks_(index, newBlock1, newBlock2);
+ } else {
+ // split horizontally
+ // block right of the inserted entry
+ newBlock1 = {
+ x: block.x + width,
+ y: block.y,
+ width: block.width - width,
+ height: height
+ };
+
+ // block below the inserted entry
+ newBlock2 = {
+ x: block.x,
+ y: block.y + height,
+ width: block.width,
+ height: block.height - height
+ };
+ this.updateBlocks_(index, newBlock1, newBlock2);
+ }
+};
+
+
+/**
+ * Remove the old block and insert new blocks at the same array position.
+ * The new blocks are inserted at the same position, so that splitted
+ * blocks (that are potentially smaller) are filled first.
+ * @private
+ * @param {number} index The index of the block to remove.
+ * @param {ol.AtlasBlock} newBlock1 The 1st block to add.
+ * @param {ol.AtlasBlock} newBlock2 The 2nd block to add.
+ */
+ol.style.Atlas.prototype.updateBlocks_ = function(index, newBlock1, newBlock2) {
+ var args = [index, 1];
+ if (newBlock1.width > 0 && newBlock1.height > 0) {
+ args.push(newBlock1);
+ }
+ if (newBlock2.width > 0 && newBlock2.height > 0) {
+ args.push(newBlock2);
+ }
+ this.emptyBlocks_.splice.apply(this.emptyBlocks_, args);
+};
+
+goog.provide('ol.style.RegularShape');
+
+goog.require('goog.asserts');
+goog.require('ol');
+goog.require('ol.color');
+goog.require('ol.colorlike');
+goog.require('ol.dom');
+goog.require('ol.has');
+goog.require('ol.render.canvas');
+goog.require('ol.style.AtlasManager');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Image');
+goog.require('ol.style.ImageState');
+goog.require('ol.style.Stroke');
+
+
+/**
+ * @classdesc
+ * Set regular shape style for vector features. The resulting shape will be
+ * a regular polygon when `radius` is provided, or a star when `radius1` and
+ * `radius2` are provided.
+ *
+ * @constructor
+ * @param {olx.style.RegularShapeOptions} options Options.
+ * @extends {ol.style.Image}
+ * @api
+ */
+ol.style.RegularShape = function(options) {
+
+ goog.asserts.assert(
+ options.radius !== undefined || options.radius1 !== undefined,
+ 'must provide either "radius" or "radius1"');
+
+ /**
+ * @private
+ * @type {Array.<string>}
+ */
+ this.checksums_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.canvas_ = null;
+
+ /**
+ * @private
+ * @type {HTMLCanvasElement}
+ */
+ this.hitDetectionCanvas_ = null;
+
+ /**
+ * @private
+ * @type {ol.style.Fill}
+ */
+ this.fill_ = options.fill !== undefined ? options.fill : null;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.origin_ = [0, 0];
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.points_ = options.points;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.radius_ = /** @type {number} */ (options.radius !== undefined ?
+ options.radius : options.radius1);
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.radius2_ =
+ options.radius2 !== undefined ? options.radius2 : this.radius_;
+
+ /**
+ * @private
+ * @type {number}
+ */
+ this.angle_ = options.angle !== undefined ? options.angle : 0;
+
+ /**
+ * @private
+ * @type {ol.style.Stroke}
+ */
+ this.stroke_ = options.stroke !== undefined ? options.stroke : null;
+
+ /**
+ * @private
+ * @type {Array.<number>}
+ */
+ this.anchor_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.size_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.imageSize_ = null;
+
+ /**
+ * @private
+ * @type {ol.Size}
+ */
+ this.hitDetectionImageSize_ = null;
+
+ this.render_(options.atlasManager);
+
+ /**
+ * @type {boolean}
+ */
+ var snapToPixel = options.snapToPixel !== undefined ?
+ options.snapToPixel : true;
+
+ /**
+ * @type {boolean}
+ */
+ var rotateWithView = options.rotateWithView !== undefined ?
+ options.rotateWithView : false;
+
+ ol.style.Image.call(this, {
+ opacity: 1,
+ rotateWithView: rotateWithView,
+ rotation: options.rotation !== undefined ? options.rotation : 0,
+ scale: 1,
+ snapToPixel: snapToPixel
+ });
+
+};
+ol.inherits(ol.style.RegularShape, ol.style.Image);
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.RegularShape.prototype.getAnchor = function() {
+ return this.anchor_;
+};
+
+
+/**
+ * Get the angle used in generating the shape.
+ * @return {number} Shape's rotation in radians.
+ * @api
+ */
+ol.style.RegularShape.prototype.getAngle = function() {
+ return this.angle_;
+};
+
+
+/**
+ * Get the fill style for the shape.
+ * @return {ol.style.Fill} Fill style.
+ * @api
+ */
+ol.style.RegularShape.prototype.getFill = function() {
+ return this.fill_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.getHitDetectionImage = function(pixelRatio) {
+ return this.hitDetectionCanvas_;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.RegularShape.prototype.getImage = function(pixelRatio) {
+ return this.canvas_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.getImageSize = function() {
+ return this.imageSize_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.getHitDetectionImageSize = function() {
+ return this.hitDetectionImageSize_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.getImageState = function() {
+ return ol.style.ImageState.LOADED;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.RegularShape.prototype.getOrigin = function() {
+ return this.origin_;
+};
+
+
+/**
+ * Get the number of points for generating the shape.
+ * @return {number} Number of points for stars and regular polygons.
+ * @api
+ */
+ol.style.RegularShape.prototype.getPoints = function() {
+ return this.points_;
+};
+
+
+/**
+ * Get the (primary) radius for the shape.
+ * @return {number} Radius.
+ * @api
+ */
+ol.style.RegularShape.prototype.getRadius = function() {
+ return this.radius_;
+};
+
+
+/**
+ * Get the secondary radius for the shape.
+ * @return {number} Radius2.
+ * @api
+ */
+ol.style.RegularShape.prototype.getRadius2 = function() {
+ return this.radius2_;
+};
+
+
+/**
+ * @inheritDoc
+ * @api
+ */
+ol.style.RegularShape.prototype.getSize = function() {
+ return this.size_;
+};
+
+
+/**
+ * Get the stroke style for the shape.
+ * @return {ol.style.Stroke} Stroke style.
+ * @api
+ */
+ol.style.RegularShape.prototype.getStroke = function() {
+ return this.stroke_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.listenImageChange = ol.nullFunction;
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.load = ol.nullFunction;
+
+
+/**
+ * @inheritDoc
+ */
+ol.style.RegularShape.prototype.unlistenImageChange = ol.nullFunction;
+
+
+/**
+ * @private
+ * @param {ol.style.AtlasManager|undefined} atlasManager An atlas manager.
+ */
+ol.style.RegularShape.prototype.render_ = function(atlasManager) {
+ var imageSize;
+ var lineCap = '';
+ var lineJoin = '';
+ var miterLimit = 0;
+ var lineDash = null;
+ var strokeStyle;
+ var strokeWidth = 0;
+
+ if (this.stroke_) {
+ strokeStyle = ol.color.asString(this.stroke_.getColor());
+ strokeWidth = this.stroke_.getWidth();
+ if (strokeWidth === undefined) {
+ strokeWidth = ol.render.canvas.defaultLineWidth;
+ }
+ lineDash = this.stroke_.getLineDash();
+ if (!ol.has.CANVAS_LINE_DASH) {
+ lineDash = null;
+ }
+ lineJoin = this.stroke_.getLineJoin();
+ if (lineJoin === undefined) {
+ lineJoin = ol.render.canvas.defaultLineJoin;
+ }
+ lineCap = this.stroke_.getLineCap();
+ if (lineCap === undefined) {
+ lineCap = ol.render.canvas.defaultLineCap;
+ }
+ miterLimit = this.stroke_.getMiterLimit();
+ if (miterLimit === undefined) {
+ miterLimit = ol.render.canvas.defaultMiterLimit;
+ }
+ }
+
+ var size = 2 * (this.radius_ + strokeWidth) + 1;
+
+ /** @type {ol.RegularShapeRenderOptions} */
+ var renderOptions = {
+ strokeStyle: strokeStyle,
+ strokeWidth: strokeWidth,
+ size: size,
+ lineCap: lineCap,
+ lineDash: lineDash,
+ lineJoin: lineJoin,
+ miterLimit: miterLimit
+ };
+
+ if (atlasManager === undefined) {
+ // no atlas manager is used, create a new canvas
+ var context = ol.dom.createCanvasContext2D(size, size);
+ this.canvas_ = context.canvas;
+
+ // canvas.width and height are rounded to the closest integer
+ size = this.canvas_.width;
+ imageSize = size;
+
+ this.draw_(renderOptions, context, 0, 0);
+
+ this.createHitDetectionCanvas_(renderOptions);
+ } else {
+ // an atlas manager is used, add the symbol to an atlas
+ size = Math.round(size);
+
+ var hasCustomHitDetectionImage = !this.fill_;
+ var renderHitDetectionCallback;
+ if (hasCustomHitDetectionImage) {
+ // render the hit-detection image into a separate atlas image
+ renderHitDetectionCallback =
+ this.drawHitDetectionCanvas_.bind(this, renderOptions);
+ }
+
+ var id = this.getChecksum();
+ var info = atlasManager.add(
+ id, size, size, this.draw_.bind(this, renderOptions),
+ renderHitDetectionCallback);
+ goog.asserts.assert(info, 'shape size is too large');
+
+ this.canvas_ = info.image;
+ this.origin_ = [info.offsetX, info.offsetY];
+ imageSize = info.image.width;
+
+ if (hasCustomHitDetectionImage) {
+ this.hitDetectionCanvas_ = info.hitImage;
+ this.hitDetectionImageSize_ =
+ [info.hitImage.width, info.hitImage.height];
+ } else {
+ this.hitDetectionCanvas_ = this.canvas_;
+ this.hitDetectionImageSize_ = [imageSize, imageSize];
+ }
+ }
+
+ this.anchor_ = [size / 2, size / 2];
+ this.size_ = [size, size];
+ this.imageSize_ = [imageSize, imageSize];
+};
+
+
+/**
+ * @private
+ * @param {ol.RegularShapeRenderOptions} renderOptions Render options.
+ * @param {CanvasRenderingContext2D} context The rendering context.
+ * @param {number} x The origin for the symbol (x).
+ * @param {number} y The origin for the symbol (y).
+ */
+ol.style.RegularShape.prototype.draw_ = function(renderOptions, context, x, y) {
+ var i, angle0, radiusC;
+ // reset transform
+ context.setTransform(1, 0, 0, 1, 0, 0);
+
+ // then move to (x, y)
+ context.translate(x, y);
+
+ context.beginPath();
+ if (this.radius2_ !== this.radius_) {
+ this.points_ = 2 * this.points_;
+ }
+ for (i = 0; i <= this.points_; i++) {
+ angle0 = i * 2 * Math.PI / this.points_ - Math.PI / 2 + this.angle_;
+ radiusC = i % 2 === 0 ? this.radius_ : this.radius2_;
+ context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0),
+ renderOptions.size / 2 + radiusC * Math.sin(angle0));
+ }
+
+ if (this.fill_) {
+ context.fillStyle = ol.colorlike.asColorLike(this.fill_.getColor());
+ context.fill();
+ }
+ if (this.stroke_) {
+ context.strokeStyle = renderOptions.strokeStyle;
+ context.lineWidth = renderOptions.strokeWidth;
+ if (renderOptions.lineDash) {
+ context.setLineDash(renderOptions.lineDash);
+ }
+ context.lineCap = renderOptions.lineCap;
+ context.lineJoin = renderOptions.lineJoin;
+ context.miterLimit = renderOptions.miterLimit;
+ context.stroke();
+ }
+ context.closePath();
+};
+
+
+/**
+ * @private
+ * @param {ol.RegularShapeRenderOptions} renderOptions Render options.
+ */
+ol.style.RegularShape.prototype.createHitDetectionCanvas_ = function(renderOptions) {
+ this.hitDetectionImageSize_ = [renderOptions.size, renderOptions.size];
+ if (this.fill_) {
+ this.hitDetectionCanvas_ = this.canvas_;
+ return;
+ }
+
+ // if no fill style is set, create an extra hit-detection image with a
+ // default fill style
+ var context = ol.dom.createCanvasContext2D(renderOptions.size, renderOptions.size);
+ this.hitDetectionCanvas_ = context.canvas;
+
+ this.drawHitDetectionCanvas_(renderOptions, context, 0, 0);
+};
+
+
+/**
+ * @private
+ * @param {ol.RegularShapeRenderOptions} renderOptions Render options.
+ * @param {CanvasRenderingContext2D} context The context.
+ * @param {number} x The origin for the symbol (x).
+ * @param {number} y The origin for the symbol (y).
+ */
+ol.style.RegularShape.prototype.drawHitDetectionCanvas_ = function(renderOptions, context, x, y) {
+ // reset transform
+ context.setTransform(1, 0, 0, 1, 0, 0);
+
+ // then move to (x, y)
+ context.translate(x, y);
+
+ context.beginPath();
+ if (this.radius2_ !== this.radius_) {
+ this.points_ = 2 * this.points_;
+ }
+ var i, radiusC, angle0;
+ for (i = 0; i <= this.points_; i++) {
+ angle0 = i * 2 * Math.PI / this.points_ - Math.PI / 2 + this.angle_;
+ radiusC = i % 2 === 0 ? this.radius_ : this.radius2_;
+ context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0),
+ renderOptions.size / 2 + radiusC * Math.sin(angle0));
+ }
+
+ context.fillStyle = ol.render.canvas.defaultFillStyle;
+ context.fill();
+ if (this.stroke_) {
+ context.strokeStyle = renderOptions.strokeStyle;
+ context.lineWidth = renderOptions.strokeWidth;
+ if (renderOptions.lineDash) {
+ context.setLineDash(renderOptions.lineDash);
+ }
+ context.stroke();
+ }
+ context.closePath();
+};
+
+
+/**
+ * @return {string} The checksum.
+ */
+ol.style.RegularShape.prototype.getChecksum = function() {
+ var strokeChecksum = this.stroke_ ?
+ this.stroke_.getChecksum() : '-';
+ var fillChecksum = this.fill_ ?
+ this.fill_.getChecksum() : '-';
+
+ var recalculate = !this.checksums_ ||
+ (strokeChecksum != this.checksums_[1] ||
+ fillChecksum != this.checksums_[2] ||
+ this.radius_ != this.checksums_[3] ||
+ this.radius2_ != this.checksums_[4] ||
+ this.angle_ != this.checksums_[5] ||
+ this.points_ != this.checksums_[6]);
+
+ if (recalculate) {
+ var checksum = 'r' + strokeChecksum + fillChecksum +
+ (this.radius_ !== undefined ? this.radius_.toString() : '-') +
+ (this.radius2_ !== undefined ? this.radius2_.toString() : '-') +
+ (this.angle_ !== undefined ? this.angle_.toString() : '-') +
+ (this.points_ !== undefined ? this.points_.toString() : '-');
+ this.checksums_ = [checksum, strokeChecksum, fillChecksum,
+ this.radius_, this.radius2_, this.angle_, this.points_];
+ }
+
+ return this.checksums_[0];
+};
+
+// Copyright 2009 The Closure Library Authors.
+// All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file has been auto-generated by GenJsDeps, please do not edit.
+
+goog.addDependency(
+ 'demos/editor/equationeditor.js', ['goog.demos.editor.EquationEditor'],
+ ['goog.ui.equation.EquationEditorDialog']);
+goog.addDependency(
+ 'demos/editor/helloworld.js', ['goog.demos.editor.HelloWorld'],
+ ['goog.dom', 'goog.dom.TagName', 'goog.editor.Plugin']);
+goog.addDependency(
+ 'demos/editor/helloworlddialog.js',
+ [
+ 'goog.demos.editor.HelloWorldDialog',
+ 'goog.demos.editor.HelloWorldDialog.OkEvent'
+ ],
+ [
+ 'goog.dom.TagName', 'goog.events.Event', 'goog.string',
+ 'goog.ui.editor.AbstractDialog', 'goog.ui.editor.AbstractDialog.Builder',
+ 'goog.ui.editor.AbstractDialog.EventType'
+ ]);
+goog.addDependency(
+ 'demos/editor/helloworlddialogplugin.js',
+ [
+ 'goog.demos.editor.HelloWorldDialogPlugin',
+ 'goog.demos.editor.HelloWorldDialogPlugin.Command'
+ ],
+ [
+ 'goog.demos.editor.HelloWorldDialog', 'goog.dom.TagName',
+ 'goog.editor.plugins.AbstractDialogPlugin', 'goog.editor.range',
+ 'goog.functions', 'goog.ui.editor.AbstractDialog.EventType'
+ ]);
+
+/**
+ * @fileoverview Custom exports file.
+ * @suppress {checkVars,extraRequire}
+ */
+
+goog.require('ol');
+goog.require('ol.Attribution');
+goog.require('ol.Collection');
+goog.require('ol.CollectionEvent');
+goog.require('ol.CollectionEventType');
+goog.require('ol.DeviceOrientation');
+goog.require('ol.DragBoxEvent');
+goog.require('ol.Feature');
+goog.require('ol.Geolocation');
+goog.require('ol.Graticule');
+goog.require('ol.Image');
+goog.require('ol.ImageTile');
+goog.require('ol.Kinetic');
+goog.require('ol.Map');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.MapBrowserEvent.EventType');
+goog.require('ol.MapBrowserEventHandler');
+goog.require('ol.MapBrowserPointerEvent');
+goog.require('ol.MapEvent');
+goog.require('ol.MapEventType');
+goog.require('ol.MapProperty');
+goog.require('ol.Object');
+goog.require('ol.ObjectEvent');
+goog.require('ol.ObjectEventType');
+goog.require('ol.Observable');
+goog.require('ol.Overlay');
+goog.require('ol.OverlayPositioning');
+goog.require('ol.RasterOperationType');
+goog.require('ol.Sphere');
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.VectorTile');
+goog.require('ol.View');
+goog.require('ol.ViewHint');
+goog.require('ol.ViewProperty');
+goog.require('ol.animation');
+goog.require('ol.color');
+goog.require('ol.colorlike');
+goog.require('ol.control');
+goog.require('ol.control.Attribution');
+goog.require('ol.control.Control');
+goog.require('ol.control.FullScreen');
+goog.require('ol.control.MousePosition');
+goog.require('ol.control.OverviewMap');
+goog.require('ol.control.Rotate');
+goog.require('ol.control.ScaleLine');
+goog.require('ol.control.Zoom');
+goog.require('ol.control.ZoomSlider');
+goog.require('ol.control.ZoomToExtent');
+goog.require('ol.coordinate');
+goog.require('ol.easing');
+goog.require('ol.events.Event');
+goog.require('ol.events.condition');
+goog.require('ol.extent');
+goog.require('ol.extent.Corner');
+goog.require('ol.extent.Relationship');
+goog.require('ol.featureloader');
+goog.require('ol.format.EsriJSON');
+goog.require('ol.format.Feature');
+goog.require('ol.format.GML');
+goog.require('ol.format.GML2');
+goog.require('ol.format.GML3');
+goog.require('ol.format.GMLBase');
+goog.require('ol.format.GPX');
+goog.require('ol.format.GeoJSON');
+goog.require('ol.format.IGC');
+goog.require('ol.format.KML');
+goog.require('ol.format.MVT');
+goog.require('ol.format.OSMXML');
+goog.require('ol.format.Polyline');
+goog.require('ol.format.TopoJSON');
+goog.require('ol.format.WFS');
+goog.require('ol.format.WKT');
+goog.require('ol.format.WMSCapabilities');
+goog.require('ol.format.WMSGetFeatureInfo');
+goog.require('ol.format.WMTSCapabilities');
+goog.require('ol.format.ogc.filter');
+goog.require('ol.format.ogc.filter.And');
+goog.require('ol.format.ogc.filter.Bbox');
+goog.require('ol.format.ogc.filter.Comparison');
+goog.require('ol.format.ogc.filter.ComparisonBinary');
+goog.require('ol.format.ogc.filter.EqualTo');
+goog.require('ol.format.ogc.filter.Filter');
+goog.require('ol.format.ogc.filter.GreaterThan');
+goog.require('ol.format.ogc.filter.GreaterThanOrEqualTo');
+goog.require('ol.format.ogc.filter.IsBetween');
+goog.require('ol.format.ogc.filter.IsLike');
+goog.require('ol.format.ogc.filter.IsNull');
+goog.require('ol.format.ogc.filter.LessThan');
+goog.require('ol.format.ogc.filter.LessThanOrEqualTo');
+goog.require('ol.format.ogc.filter.Logical');
+goog.require('ol.format.ogc.filter.LogicalBinary');
+goog.require('ol.format.ogc.filter.Not');
+goog.require('ol.format.ogc.filter.NotEqualTo');
+goog.require('ol.format.ogc.filter.Or');
+goog.require('ol.geom.Circle');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryCollection');
+goog.require('ol.geom.GeometryLayout');
+goog.require('ol.geom.GeometryType');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.LinearRing');
+goog.require('ol.geom.MultiLineString');
+goog.require('ol.geom.MultiPoint');
+goog.require('ol.geom.MultiPolygon');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.geom.SimpleGeometry');
+goog.require('ol.has');
+goog.require('ol.interaction');
+goog.require('ol.interaction.DoubleClickZoom');
+goog.require('ol.interaction.DragAndDrop');
+goog.require('ol.interaction.DragAndDropEvent');
+goog.require('ol.interaction.DragBox');
+goog.require('ol.interaction.DragPan');
+goog.require('ol.interaction.DragRotate');
+goog.require('ol.interaction.DragRotateAndZoom');
+goog.require('ol.interaction.DragZoom');
+goog.require('ol.interaction.Draw');
+goog.require('ol.interaction.DrawEvent');
+goog.require('ol.interaction.DrawEventType');
+goog.require('ol.interaction.DrawMode');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.InteractionProperty');
+goog.require('ol.interaction.KeyboardPan');
+goog.require('ol.interaction.KeyboardZoom');
+goog.require('ol.interaction.Modify');
+goog.require('ol.interaction.ModifyEvent');
+goog.require('ol.interaction.MouseWheelZoom');
+goog.require('ol.interaction.PinchRotate');
+goog.require('ol.interaction.PinchZoom');
+goog.require('ol.interaction.Pointer');
+goog.require('ol.interaction.Select');
+goog.require('ol.interaction.SelectEvent');
+goog.require('ol.interaction.SelectEventType');
+goog.require('ol.interaction.Snap');
+goog.require('ol.interaction.SnapProperty');
+goog.require('ol.interaction.Translate');
+goog.require('ol.interaction.TranslateEvent');
+goog.require('ol.layer.Base');
+goog.require('ol.layer.Group');
+goog.require('ol.layer.Heatmap');
+goog.require('ol.layer.Image');
+goog.require('ol.layer.Layer');
+goog.require('ol.layer.LayerProperty');
+goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
+goog.require('ol.layer.VectorTile');
+goog.require('ol.loadingstrategy');
+goog.require('ol.proj');
+goog.require('ol.proj.METERS_PER_UNIT');
+goog.require('ol.proj.Projection');
+goog.require('ol.proj.Units');
+goog.require('ol.proj.common');
+goog.require('ol.render');
+goog.require('ol.render.Event');
+goog.require('ol.render.EventType');
+goog.require('ol.render.Feature');
+goog.require('ol.render.VectorContext');
+goog.require('ol.render.canvas.Immediate');
+goog.require('ol.render.webgl.Immediate');
+goog.require('ol.size');
+goog.require('ol.source.BingMaps');
+goog.require('ol.source.CartoDB');
+goog.require('ol.source.Cluster');
+goog.require('ol.source.Image');
+goog.require('ol.source.ImageArcGISRest');
+goog.require('ol.source.ImageCanvas');
+goog.require('ol.source.ImageEvent');
+goog.require('ol.source.ImageMapGuide');
+goog.require('ol.source.ImageStatic');
+goog.require('ol.source.ImageVector');
+goog.require('ol.source.ImageWMS');
+goog.require('ol.source.OSM');
+goog.require('ol.source.Raster');
+goog.require('ol.source.RasterEvent');
+goog.require('ol.source.RasterEventType');
+goog.require('ol.source.Source');
+goog.require('ol.source.Stamen');
+goog.require('ol.source.State');
+goog.require('ol.source.Tile');
+goog.require('ol.source.TileArcGISRest');
+goog.require('ol.source.TileDebug');
+goog.require('ol.source.TileEvent');
+goog.require('ol.source.TileImage');
+goog.require('ol.source.TileJSON');
+goog.require('ol.source.TileUTFGrid');
+goog.require('ol.source.TileWMS');
+goog.require('ol.source.UrlTile');
+goog.require('ol.source.Vector');
+goog.require('ol.source.VectorEvent');
+goog.require('ol.source.VectorEventType');
+goog.require('ol.source.VectorTile');
+goog.require('ol.source.WMTS');
+goog.require('ol.source.XYZ');
+goog.require('ol.source.Zoomify');
+goog.require('ol.style.Atlas');
+goog.require('ol.style.AtlasManager');
+goog.require('ol.style.Circle');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Icon');
+goog.require('ol.style.IconAnchorUnits');
+goog.require('ol.style.IconImageCache');
+goog.require('ol.style.IconOrigin');
+goog.require('ol.style.Image');
+goog.require('ol.style.ImageState');
+goog.require('ol.style.RegularShape');
+goog.require('ol.style.Stroke');
+goog.require('ol.style.Style');
+goog.require('ol.style.Text');
+goog.require('ol.style.defaultGeometryFunction');
+goog.require('ol.tilegrid.TileGrid');
+goog.require('ol.tilegrid.WMTS');
+goog.require('ol.tilejson');
+goog.require('ol.webgl.Context');
+goog.require('ol.xml');
+
+
+goog.exportSymbol(
+ 'ol.animation.bounce',
+ ol.animation.bounce,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.animation.pan',
+ ol.animation.pan,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.animation.rotate',
+ ol.animation.rotate,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.animation.zoom',
+ ol.animation.zoom,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.Attribution',
+ ol.Attribution,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Attribution.prototype,
+ 'getHTML',
+ ol.Attribution.prototype.getHTML);
+
+goog.exportProperty(
+ ol.CollectionEvent.prototype,
+ 'element',
+ ol.CollectionEvent.prototype.element);
+
+goog.exportSymbol(
+ 'ol.Collection',
+ ol.Collection,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'clear',
+ ol.Collection.prototype.clear);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'extend',
+ ol.Collection.prototype.extend);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'forEach',
+ ol.Collection.prototype.forEach);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'getArray',
+ ol.Collection.prototype.getArray);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'item',
+ ol.Collection.prototype.item);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'getLength',
+ ol.Collection.prototype.getLength);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'insertAt',
+ ol.Collection.prototype.insertAt);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'pop',
+ ol.Collection.prototype.pop);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'push',
+ ol.Collection.prototype.push);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'remove',
+ ol.Collection.prototype.remove);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'removeAt',
+ ol.Collection.prototype.removeAt);
+
+goog.exportProperty(
+ ol.Collection.prototype,
+ 'setAt',
+ ol.Collection.prototype.setAt);
+
+goog.exportSymbol(
+ 'ol.colorlike.asColorLike',
+ ol.colorlike.asColorLike,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.add',
+ ol.coordinate.add,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.createStringXY',
+ ol.coordinate.createStringXY,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.format',
+ ol.coordinate.format,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.rotate',
+ ol.coordinate.rotate,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.toStringHDMS',
+ ol.coordinate.toStringHDMS,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.coordinate.toStringXY',
+ ol.coordinate.toStringXY,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.DeviceOrientation',
+ ol.DeviceOrientation,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'getAlpha',
+ ol.DeviceOrientation.prototype.getAlpha);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'getBeta',
+ ol.DeviceOrientation.prototype.getBeta);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'getGamma',
+ ol.DeviceOrientation.prototype.getGamma);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'getHeading',
+ ol.DeviceOrientation.prototype.getHeading);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'getTracking',
+ ol.DeviceOrientation.prototype.getTracking);
+
+goog.exportProperty(
+ ol.DeviceOrientation.prototype,
+ 'setTracking',
+ ol.DeviceOrientation.prototype.setTracking);
+
+goog.exportSymbol(
+ 'ol.easing.easeIn',
+ ol.easing.easeIn,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.easing.easeOut',
+ ol.easing.easeOut,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.easing.inAndOut',
+ ol.easing.inAndOut,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.easing.linear',
+ ol.easing.linear,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.easing.upAndDown',
+ ol.easing.upAndDown,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.boundingExtent',
+ ol.extent.boundingExtent,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.buffer',
+ ol.extent.buffer,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.containsCoordinate',
+ ol.extent.containsCoordinate,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.containsExtent',
+ ol.extent.containsExtent,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.containsXY',
+ ol.extent.containsXY,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.createEmpty',
+ ol.extent.createEmpty,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.equals',
+ ol.extent.equals,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.extend',
+ ol.extent.extend,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getBottomLeft',
+ ol.extent.getBottomLeft,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getBottomRight',
+ ol.extent.getBottomRight,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getCenter',
+ ol.extent.getCenter,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getHeight',
+ ol.extent.getHeight,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getIntersection',
+ ol.extent.getIntersection,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getSize',
+ ol.extent.getSize,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getTopLeft',
+ ol.extent.getTopLeft,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getTopRight',
+ ol.extent.getTopRight,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.getWidth',
+ ol.extent.getWidth,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.intersects',
+ ol.extent.intersects,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.isEmpty',
+ ol.extent.isEmpty,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.extent.applyTransform',
+ ol.extent.applyTransform,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.Feature',
+ ol.Feature,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'clone',
+ ol.Feature.prototype.clone);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getGeometry',
+ ol.Feature.prototype.getGeometry);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getId',
+ ol.Feature.prototype.getId);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getGeometryName',
+ ol.Feature.prototype.getGeometryName);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getStyle',
+ ol.Feature.prototype.getStyle);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getStyleFunction',
+ ol.Feature.prototype.getStyleFunction);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'setGeometry',
+ ol.Feature.prototype.setGeometry);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'setStyle',
+ ol.Feature.prototype.setStyle);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'setId',
+ ol.Feature.prototype.setId);
+
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'setGeometryName',
+ ol.Feature.prototype.setGeometryName);
+
+goog.exportSymbol(
+ 'ol.featureloader.tile',
+ ol.featureloader.tile,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.featureloader.xhr',
+ ol.featureloader.xhr,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.Geolocation',
+ ol.Geolocation,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getAccuracy',
+ ol.Geolocation.prototype.getAccuracy);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getAccuracyGeometry',
+ ol.Geolocation.prototype.getAccuracyGeometry);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getAltitude',
+ ol.Geolocation.prototype.getAltitude);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getAltitudeAccuracy',
+ ol.Geolocation.prototype.getAltitudeAccuracy);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getHeading',
+ ol.Geolocation.prototype.getHeading);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getPosition',
+ ol.Geolocation.prototype.getPosition);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getProjection',
+ ol.Geolocation.prototype.getProjection);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getSpeed',
+ ol.Geolocation.prototype.getSpeed);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getTracking',
+ ol.Geolocation.prototype.getTracking);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'getTrackingOptions',
+ ol.Geolocation.prototype.getTrackingOptions);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'setProjection',
+ ol.Geolocation.prototype.setProjection);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'setTracking',
+ ol.Geolocation.prototype.setTracking);
+
+goog.exportProperty(
+ ol.Geolocation.prototype,
+ 'setTrackingOptions',
+ ol.Geolocation.prototype.setTrackingOptions);
+
+goog.exportSymbol(
+ 'ol.Graticule',
+ ol.Graticule,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Graticule.prototype,
+ 'getMap',
+ ol.Graticule.prototype.getMap);
+
+goog.exportProperty(
+ ol.Graticule.prototype,
+ 'getMeridians',
+ ol.Graticule.prototype.getMeridians);
+
+goog.exportProperty(
+ ol.Graticule.prototype,
+ 'getParallels',
+ ol.Graticule.prototype.getParallels);
+
+goog.exportProperty(
+ ol.Graticule.prototype,
+ 'setMap',
+ ol.Graticule.prototype.setMap);
+
+goog.exportSymbol(
+ 'ol.has.DEVICE_PIXEL_RATIO',
+ ol.has.DEVICE_PIXEL_RATIO,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.has.CANVAS',
+ ol.has.CANVAS,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.has.DEVICE_ORIENTATION',
+ ol.has.DEVICE_ORIENTATION,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.has.GEOLOCATION',
+ ol.has.GEOLOCATION,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.has.TOUCH',
+ ol.has.TOUCH,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.has.WEBGL',
+ ol.has.WEBGL,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Image.prototype,
+ 'getImage',
+ ol.Image.prototype.getImage);
+
+goog.exportProperty(
+ ol.Image.prototype,
+ 'load',
+ ol.Image.prototype.load);
+
+goog.exportProperty(
+ ol.ImageTile.prototype,
+ 'getImage',
+ ol.ImageTile.prototype.getImage);
+
+goog.exportProperty(
+ ol.ImageTile.prototype,
+ 'load',
+ ol.ImageTile.prototype.load);
+
+goog.exportSymbol(
+ 'ol.Kinetic',
+ ol.Kinetic,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.loadingstrategy.all',
+ ol.loadingstrategy.all,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.loadingstrategy.bbox',
+ ol.loadingstrategy.bbox,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.loadingstrategy.tile',
+ ol.loadingstrategy.tile,
+ OPENLAYERS);
+
+goog.exportSymbol(
+ 'ol.Map',
+ ol.Map,
+ OPENLAYERS);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'addControl',
+ ol.Map.prototype.addControl);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'addInteraction',
+ ol.Map.prototype.addInteraction);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'addLayer',
+ ol.Map.prototype.addLayer);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'addOverlay',
+ ol.Map.prototype.addOverlay);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'beforeRender',
+ ol.Map.prototype.beforeRender);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'forEachFeatureAtPixel',
+ ol.Map.prototype.forEachFeatureAtPixel);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'forEachLayerAtPixel',
+ ol.Map.prototype.forEachLayerAtPixel);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'hasFeatureAtPixel',
+ ol.Map.prototype.hasFeatureAtPixel);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getEventCoordinate',
+ ol.Map.prototype.getEventCoordinate);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getEventPixel',
+ ol.Map.prototype.getEventPixel);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getTarget',
+ ol.Map.prototype.getTarget);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getTargetElement',
+ ol.Map.prototype.getTargetElement);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getCoordinateFromPixel',
+ ol.Map.prototype.getCoordinateFromPixel);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getControls',
+ ol.Map.prototype.getControls);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getOverlays',
+ ol.Map.prototype.getOverlays);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getOverlayById',
+ ol.Map.prototype.getOverlayById);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getInteractions',
+ ol.Map.prototype.getInteractions);
+
+goog.exportProperty(
+ ol.Map.prototype,
+ 'getLayerGroup',
+ ol.Map.prototype.getLayerGroup);
+
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+ ol.control.Zoom.prototype,
+ 'getProperties',
+ ol.control.Zoom.prototype.getProperties);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'set',
+ ol.control.Zoom.prototype.set);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'setProperties',
+ ol.control.Zoom.prototype.setProperties);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'unset',
+ ol.control.Zoom.prototype.unset);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'changed',
+ ol.control.Zoom.prototype.changed);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'dispatchEvent',
+ ol.control.Zoom.prototype.dispatchEvent);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'getRevision',
+ ol.control.Zoom.prototype.getRevision);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'on',
+ ol.control.Zoom.prototype.on);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'once',
+ ol.control.Zoom.prototype.once);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'un',
+ ol.control.Zoom.prototype.un);
+
+goog.exportProperty(
+ ol.control.Zoom.prototype,
+ 'unByKey',
+ ol.control.Zoom.prototype.unByKey);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'getMap',
+ ol.control.ZoomSlider.prototype.getMap);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'setMap',
+ ol.control.ZoomSlider.prototype.setMap);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'setTarget',
+ ol.control.ZoomSlider.prototype.setTarget);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'get',
+ ol.control.ZoomSlider.prototype.get);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'getKeys',
+ ol.control.ZoomSlider.prototype.getKeys);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'getProperties',
+ ol.control.ZoomSlider.prototype.getProperties);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'set',
+ ol.control.ZoomSlider.prototype.set);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'setProperties',
+ ol.control.ZoomSlider.prototype.setProperties);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'unset',
+ ol.control.ZoomSlider.prototype.unset);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'changed',
+ ol.control.ZoomSlider.prototype.changed);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'dispatchEvent',
+ ol.control.ZoomSlider.prototype.dispatchEvent);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'getRevision',
+ ol.control.ZoomSlider.prototype.getRevision);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'on',
+ ol.control.ZoomSlider.prototype.on);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'once',
+ ol.control.ZoomSlider.prototype.once);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'un',
+ ol.control.ZoomSlider.prototype.un);
+
+goog.exportProperty(
+ ol.control.ZoomSlider.prototype,
+ 'unByKey',
+ ol.control.ZoomSlider.prototype.unByKey);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'getMap',
+ ol.control.ZoomToExtent.prototype.getMap);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'setMap',
+ ol.control.ZoomToExtent.prototype.setMap);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'setTarget',
+ ol.control.ZoomToExtent.prototype.setTarget);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'get',
+ ol.control.ZoomToExtent.prototype.get);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'getKeys',
+ ol.control.ZoomToExtent.prototype.getKeys);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'getProperties',
+ ol.control.ZoomToExtent.prototype.getProperties);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'set',
+ ol.control.ZoomToExtent.prototype.set);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'setProperties',
+ ol.control.ZoomToExtent.prototype.setProperties);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'unset',
+ ol.control.ZoomToExtent.prototype.unset);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'changed',
+ ol.control.ZoomToExtent.prototype.changed);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'dispatchEvent',
+ ol.control.ZoomToExtent.prototype.dispatchEvent);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'getRevision',
+ ol.control.ZoomToExtent.prototype.getRevision);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'on',
+ ol.control.ZoomToExtent.prototype.on);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'once',
+ ol.control.ZoomToExtent.prototype.once);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'un',
+ ol.control.ZoomToExtent.prototype.un);
+
+goog.exportProperty(
+ ol.control.ZoomToExtent.prototype,
+ 'unByKey',
+ ol.control.ZoomToExtent.prototype.unByKey);
+OPENLAYERS.ol = ol;
+
+ return OPENLAYERS.ol;
+}));
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-15 19:48:44 +0000