Add existing to tracked
This commit is contained in:
+769
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import buildModuleUrl from "../Core/buildModuleUrl.js";
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import Check from "../Core/Check.js";
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import Credit from "../Core/Credit.js";
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import Frozen from "../Core/Frozen.js";
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import defined from "../Core/defined.js";
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import Event from "../Core/Event.js";
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import CesiumMath from "../Core/Math.js";
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import Rectangle from "../Core/Rectangle.js";
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import Resource from "../Core/Resource.js";
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import RuntimeError from "../Core/RuntimeError.js";
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import TileProviderError from "../Core/TileProviderError.js";
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import WebMercatorTilingScheme from "../Core/WebMercatorTilingScheme.js";
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import BingMapsStyle from "./BingMapsStyle.js";
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import DiscardEmptyTilePolicy from "./DiscardEmptyTileImagePolicy.js";
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import ImageryProvider from "./ImageryProvider.js";
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/**
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* @typedef {object} BingMapsImageryProvider.ConstructorOptions
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*
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* Initialization options for the BingMapsImageryProvider constructor
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*
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* @property {string} [key] The Bing Maps key for your application, which can be
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* created at {@link https://www.bingmapsportal.com/}.
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* @property {string} [tileProtocol] The protocol to use when loading tiles, e.g. 'http' or 'https'.
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* By default, tiles are loaded using the same protocol as the page.
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* @property {BingMapsStyle} [mapStyle=BingMapsStyle.AERIAL] The type of Bing Maps imagery to load.
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* @property {string} [mapLayer] Additional display layer options as defined on {@link https://learn.microsoft.com/en-us/bingmaps/rest-services/imagery/get-imagery-metadata#template-parameters}
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* @property {string} [culture=''] The culture to use when requesting Bing Maps imagery. Not
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* all cultures are supported. See {@link http://msdn.microsoft.com/en-us/library/hh441729.aspx}
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* for information on the supported cultures.
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* @property {Ellipsoid} [ellipsoid=Ellipsoid.default] The ellipsoid. If not specified, the default ellipsoid is used.
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* @property {TileDiscardPolicy} [tileDiscardPolicy] The policy that determines if a tile
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* is invalid and should be discarded. By default, a {@link DiscardEmptyTileImagePolicy}
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* will be used, with the expectation that the Bing Maps server will send a zero-length response for missing tiles.
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* To ensure that no tiles are discarded, construct and pass a {@link NeverTileDiscardPolicy} for this parameter.
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*/
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/**
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* Used to track creation details while fetching initial metadata
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*
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* @constructor
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* @private
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*
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* @param {BingMapsImageryProvider.ConstructorOptions} options An object describing initialization options
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*/
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function ImageryProviderBuilder(options) {
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this.tileWidth = undefined;
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this.tileHeight = undefined;
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this.maximumLevel = undefined;
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this.imageUrlSubdomains = undefined;
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this.imageUrlTemplate = undefined;
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this.attributionList = undefined;
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}
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/**
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* Complete BingMapsImageryProvider creation based on builder values.
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*
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* @private
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*
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* @param {BingMapsImageryProvider} provider
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*/
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ImageryProviderBuilder.prototype.build = function (provider) {
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provider._tileWidth = this.tileWidth;
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provider._tileHeight = this.tileHeight;
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provider._maximumLevel = this.maximumLevel;
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provider._imageUrlSubdomains = this.imageUrlSubdomains;
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provider._imageUrlTemplate = this.imageUrlTemplate;
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let attributionList = (provider._attributionList = this.attributionList);
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if (!attributionList) {
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attributionList = [];
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}
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provider._attributionList = attributionList;
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for (
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let attributionIndex = 0, attributionLength = attributionList.length;
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attributionIndex < attributionLength;
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++attributionIndex
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) {
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const attribution = attributionList[attributionIndex];
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if (attribution.credit instanceof Credit) {
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// If attribution.credit has already been created
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// then we are using a cached value, which means
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// none of the remaining processing needs to be done.
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break;
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}
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attribution.credit = new Credit(attribution.attribution);
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const coverageAreas = attribution.coverageAreas;
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for (
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let areaIndex = 0, areaLength = attribution.coverageAreas.length;
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areaIndex < areaLength;
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++areaIndex
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) {
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const area = coverageAreas[areaIndex];
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const bbox = area.bbox;
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area.bbox = new Rectangle(
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CesiumMath.toRadians(bbox[1]),
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CesiumMath.toRadians(bbox[0]),
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CesiumMath.toRadians(bbox[3]),
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CesiumMath.toRadians(bbox[2]),
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);
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}
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}
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};
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function metadataSuccess(data, imageryProviderBuilder) {
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if (data.resourceSets.length !== 1) {
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throw new RuntimeError(
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"metadata does not specify one resource in resourceSets",
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);
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}
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const resource = data.resourceSets[0].resources[0];
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imageryProviderBuilder.tileWidth = resource.imageWidth;
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imageryProviderBuilder.tileHeight = resource.imageHeight;
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imageryProviderBuilder.maximumLevel = resource.zoomMax - 1;
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imageryProviderBuilder.imageUrlSubdomains = resource.imageUrlSubdomains;
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imageryProviderBuilder.imageUrlTemplate = resource.imageUrl;
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let validProviders = resource.imageryProviders;
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if (defined(resource.imageryProviders)) {
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// prevent issues with the imagery API from crashing the viewer when the expected properties are not there
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// See https://github.com/CesiumGS/cesium/issues/12088
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validProviders = resource.imageryProviders.filter((provider) =>
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provider.coverageAreas?.some((area) => defined(area.bbox)),
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);
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}
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imageryProviderBuilder.attributionList = validProviders;
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}
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function metadataFailure(metadataResource, error, provider) {
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let message = `An error occurred while accessing ${metadataResource.url}`;
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if (defined(error) && defined(error.message)) {
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message += `: ${error.message}`;
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}
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TileProviderError.reportError(
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undefined,
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provider,
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defined(provider) ? provider._errorEvent : undefined,
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message,
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undefined,
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undefined,
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undefined,
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error,
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);
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throw new RuntimeError(message);
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}
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async function requestMetadata(
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metadataResource,
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imageryProviderBuilder,
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provider,
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) {
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const cacheKey = metadataResource.url;
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let promise = BingMapsImageryProvider._metadataCache[cacheKey];
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if (!defined(promise)) {
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promise = metadataResource.fetchJson();
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BingMapsImageryProvider._metadataCache[cacheKey] = promise;
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}
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try {
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const data = await promise;
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return metadataSuccess(data, imageryProviderBuilder);
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} catch (e) {
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metadataFailure(metadataResource, e, provider);
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}
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}
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/**
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* <div class="notice">
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* To construct a BingMapsImageryProvider, call {@link BingMapsImageryProvider.fromUrl}. Do not call the constructor directly.
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* </div>
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*
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* Provides tiled imagery using the Bing Maps Imagery REST API.
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*
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* @alias BingMapsImageryProvider
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* @constructor
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*
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* @param {BingMapsImageryProvider.ConstructorOptions} options Object describing initialization options
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*
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* @see BingMapsImageryProvider.fromUrl
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* @see ArcGisMapServerImageryProvider
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* @see GoogleEarthEnterpriseMapsProvider
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* @see OpenStreetMapImageryProvider
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* @see SingleTileImageryProvider
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* @see TileMapServiceImageryProvider
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* @see WebMapServiceImageryProvider
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* @see WebMapTileServiceImageryProvider
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* @see UrlTemplateImageryProvider
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*
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* @example
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* const bing = await Cesium.BingMapsImageryProvider.fromUrl(
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* "https://dev.virtualearth.net", {
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* key: "get-yours-at-https://www.bingmapsportal.com/",
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* mapStyle: Cesium.BingMapsStyle.AERIAL
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* });
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*
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* @see {@link http://msdn.microsoft.com/en-us/library/ff701713.aspx|Bing Maps REST Services}
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* @see {@link http://www.w3.org/TR/cors/|Cross-Origin Resource Sharing}
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*/
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function BingMapsImageryProvider(options) {
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options = options ?? Frozen.EMPTY_OBJECT;
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this._defaultAlpha = undefined;
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this._defaultNightAlpha = undefined;
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this._defaultDayAlpha = undefined;
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this._defaultBrightness = undefined;
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this._defaultContrast = undefined;
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this._defaultHue = undefined;
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this._defaultSaturation = undefined;
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this._defaultGamma = 1.0;
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this._defaultMinificationFilter = undefined;
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this._defaultMagnificationFilter = undefined;
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this._mapStyle = options.mapStyle ?? BingMapsStyle.AERIAL;
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this._mapLayer = options.mapLayer;
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this._culture = options.culture ?? "";
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this._key = options.key;
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this._tileDiscardPolicy = options.tileDiscardPolicy;
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if (!defined(this._tileDiscardPolicy)) {
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this._tileDiscardPolicy = new DiscardEmptyTilePolicy();
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}
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this._proxy = options.proxy;
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this._credit = new Credit(
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`<a href="https://www.microsoft.com/en-us/maps/bing-maps/product"><img src="${BingMapsImageryProvider.logoUrl}" title="Bing Imagery"/></a>`,
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);
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this._tilingScheme = new WebMercatorTilingScheme({
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numberOfLevelZeroTilesX: 2,
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numberOfLevelZeroTilesY: 2,
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ellipsoid: options.ellipsoid,
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});
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this._tileWidth = undefined;
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this._tileHeight = undefined;
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this._maximumLevel = undefined;
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this._imageUrlTemplate = undefined;
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this._imageUrlSubdomains = undefined;
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this._attributionList = undefined;
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this._errorEvent = new Event();
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}
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Object.defineProperties(BingMapsImageryProvider.prototype, {
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/**
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* Gets the name of the BingMaps server url hosting the imagery.
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* @memberof BingMapsImageryProvider.prototype
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* @type {string}
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* @readonly
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*/
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url: {
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get: function () {
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return this._resource.url;
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},
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},
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/**
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* Gets the proxy used by this provider.
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* @memberof BingMapsImageryProvider.prototype
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* @type {Proxy}
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* @readonly
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*/
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proxy: {
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get: function () {
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return this._resource.proxy;
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},
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},
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/**
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* Gets the Bing Maps key.
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* @memberof BingMapsImageryProvider.prototype
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* @type {string}
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* @readonly
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*/
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key: {
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get: function () {
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return this._key;
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},
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},
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/**
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* Gets the type of Bing Maps imagery to load.
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* @memberof BingMapsImageryProvider.prototype
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* @type {BingMapsStyle}
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* @readonly
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*/
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mapStyle: {
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get: function () {
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return this._mapStyle;
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},
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},
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/**
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* Gets the additional map layer options as defined in {@link https://learn.microsoft.com/en-us/bingmaps/rest-services/imagery/get-imagery-metadata#template-parameters}/
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* @memberof BingMapsImageryProvider.prototype
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* @type {string}
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* @readonly
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*/
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mapLayer: {
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get: function () {
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return this._mapLayer;
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},
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},
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/**
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* The culture to use when requesting Bing Maps imagery. Not
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* all cultures are supported. See {@link http://msdn.microsoft.com/en-us/library/hh441729.aspx}
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* for information on the supported cultures.
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* @memberof BingMapsImageryProvider.prototype
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* @type {string}
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* @readonly
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*/
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culture: {
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get: function () {
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return this._culture;
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},
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},
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/**
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* Gets the width of each tile, in pixels.
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* @memberof BingMapsImageryProvider.prototype
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* @type {number}
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* @readonly
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*/
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tileWidth: {
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get: function () {
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return this._tileWidth;
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},
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},
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/**
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* Gets the height of each tile, in pixels.
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* @memberof BingMapsImageryProvider.prototype
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* @type {number}
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* @readonly
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*/
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tileHeight: {
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get: function () {
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return this._tileHeight;
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},
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},
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/**
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* Gets the maximum level-of-detail that can be requested.
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* @memberof BingMapsImageryProvider.prototype
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* @type {number|undefined}
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* @readonly
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*/
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maximumLevel: {
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get: function () {
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return this._maximumLevel;
|
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},
|
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},
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|
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/**
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* Gets the minimum level-of-detail that can be requested.
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* @memberof BingMapsImageryProvider.prototype
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* @type {number}
|
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* @readonly
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*/
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minimumLevel: {
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get: function () {
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return 0;
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||||
},
|
||||
},
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||||
|
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/**
|
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* Gets the tiling scheme used by this provider.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {TilingScheme}
|
||||
* @readonly
|
||||
*/
|
||||
tilingScheme: {
|
||||
get: function () {
|
||||
return this._tilingScheme;
|
||||
},
|
||||
},
|
||||
|
||||
/**
|
||||
* Gets the rectangle, in radians, of the imagery provided by this instance.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {Rectangle}
|
||||
* @readonly
|
||||
*/
|
||||
rectangle: {
|
||||
get: function () {
|
||||
return this._tilingScheme.rectangle;
|
||||
},
|
||||
},
|
||||
|
||||
/**
|
||||
* Gets the tile discard policy. If not undefined, the discard policy is responsible
|
||||
* for filtering out "missing" tiles via its shouldDiscardImage function. If this function
|
||||
* returns undefined, no tiles are filtered.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {TileDiscardPolicy}
|
||||
* @readonly
|
||||
*/
|
||||
tileDiscardPolicy: {
|
||||
get: function () {
|
||||
return this._tileDiscardPolicy;
|
||||
},
|
||||
},
|
||||
|
||||
/**
|
||||
* Gets an event that is raised when the imagery provider encounters an asynchronous error. By subscribing
|
||||
* to the event, you will be notified of the error and can potentially recover from it. Event listeners
|
||||
* are passed an instance of {@link TileProviderError}.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {Event}
|
||||
* @readonly
|
||||
*/
|
||||
errorEvent: {
|
||||
get: function () {
|
||||
return this._errorEvent;
|
||||
},
|
||||
},
|
||||
|
||||
/**
|
||||
* Gets the credit to display when this imagery provider is active. Typically this is used to credit
|
||||
* the source of the imagery.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {Credit}
|
||||
* @readonly
|
||||
*/
|
||||
credit: {
|
||||
get: function () {
|
||||
return this._credit;
|
||||
},
|
||||
},
|
||||
|
||||
/**
|
||||
* Gets a value indicating whether or not the images provided by this imagery provider
|
||||
* include an alpha channel. If this property is false, an alpha channel, if present, will
|
||||
* be ignored. If this property is true, any images without an alpha channel will be treated
|
||||
* as if their alpha is 1.0 everywhere. Setting this property to false reduces memory usage
|
||||
* and texture upload time.
|
||||
* @memberof BingMapsImageryProvider.prototype
|
||||
* @type {boolean}
|
||||
* @readonly
|
||||
*/
|
||||
hasAlphaChannel: {
|
||||
get: function () {
|
||||
return defined(this.mapLayer);
|
||||
},
|
||||
},
|
||||
});
|
||||
|
||||
/**
|
||||
* Creates an {@link ImageryProvider} which provides tiled imagery using the Bing Maps Imagery REST API.
|
||||
*
|
||||
* @param {Resource|string} url The url of the Bing Maps server hosting the imagery.
|
||||
* @param {BingMapsImageryProvider.ConstructorOptions} options Object describing initialization options
|
||||
* @returns {Promise<BingMapsImageryProvider>} A promise that resolves to the created BingMapsImageryProvider
|
||||
*
|
||||
* @example
|
||||
* const bing = await Cesium.BingMapsImageryProvider.fromUrl(
|
||||
* "https://dev.virtualearth.net", {
|
||||
* key: "get-yours-at-https://www.bingmapsportal.com/",
|
||||
* mapStyle: Cesium.BingMapsStyle.AERIAL
|
||||
* });
|
||||
*
|
||||
* @exception {RuntimeError} metadata does not specify one resource in resourceSets
|
||||
*/
|
||||
BingMapsImageryProvider.fromUrl = async function (url, options) {
|
||||
options = options ?? Frozen.EMPTY_OBJECT;
|
||||
|
||||
//>>includeStart('debug', pragmas.debug);
|
||||
Check.defined("url", url);
|
||||
Check.defined("options.key", options.key);
|
||||
//>>includeEnd('debug');
|
||||
|
||||
let tileProtocol = options.tileProtocol;
|
||||
|
||||
// For backward compatibility reasons, the tileProtocol may end with
|
||||
// a `:`. Remove it.
|
||||
if (defined(tileProtocol)) {
|
||||
if (
|
||||
tileProtocol.length > 0 &&
|
||||
tileProtocol[tileProtocol.length - 1] === ":"
|
||||
) {
|
||||
tileProtocol = tileProtocol.substr(0, tileProtocol.length - 1);
|
||||
}
|
||||
} else {
|
||||
// use http if the document's protocol is http, otherwise use https
|
||||
const documentProtocol = document.location.protocol;
|
||||
tileProtocol = documentProtocol === "http:" ? "http" : "https";
|
||||
}
|
||||
|
||||
const mapStyle = options.mapStyle ?? BingMapsStyle.AERIAL;
|
||||
const resource = Resource.createIfNeeded(url);
|
||||
resource.appendForwardSlash();
|
||||
|
||||
const queryParameters = {
|
||||
incl: "ImageryProviders",
|
||||
key: options.key,
|
||||
uriScheme: tileProtocol,
|
||||
};
|
||||
|
||||
if (defined(options.mapLayer)) {
|
||||
queryParameters.mapLayer = options.mapLayer;
|
||||
}
|
||||
|
||||
if (defined(options.culture)) {
|
||||
queryParameters.culture = options.culture;
|
||||
}
|
||||
|
||||
const metadataResource = resource.getDerivedResource({
|
||||
url: `REST/v1/Imagery/Metadata/${mapStyle}`,
|
||||
queryParameters: queryParameters,
|
||||
});
|
||||
|
||||
const provider = new BingMapsImageryProvider(options);
|
||||
provider._resource = resource;
|
||||
const imageryProviderBuilder = new ImageryProviderBuilder(options);
|
||||
await requestMetadata(metadataResource, imageryProviderBuilder);
|
||||
imageryProviderBuilder.build(provider);
|
||||
return provider;
|
||||
};
|
||||
|
||||
const rectangleScratch = new Rectangle();
|
||||
|
||||
/**
|
||||
* Gets the credits to be displayed when a given tile is displayed.
|
||||
*
|
||||
* @param {number} x The tile X coordinate.
|
||||
* @param {number} y The tile Y coordinate.
|
||||
* @param {number} level The tile level;
|
||||
* @returns {Credit[]} The credits to be displayed when the tile is displayed.
|
||||
*/
|
||||
BingMapsImageryProvider.prototype.getTileCredits = function (x, y, level) {
|
||||
const rectangle = this._tilingScheme.tileXYToRectangle(
|
||||
x,
|
||||
y,
|
||||
level,
|
||||
rectangleScratch,
|
||||
);
|
||||
const result = getRectangleAttribution(
|
||||
this._attributionList,
|
||||
level,
|
||||
rectangle,
|
||||
);
|
||||
|
||||
return result;
|
||||
};
|
||||
|
||||
/**
|
||||
* Requests the image for a given tile.
|
||||
*
|
||||
* @param {number} x The tile X coordinate.
|
||||
* @param {number} y The tile Y coordinate.
|
||||
* @param {number} level The tile level.
|
||||
* @param {Request} [request] The request object. Intended for internal use only.
|
||||
* @returns {Promise<ImageryTypes>|undefined} A promise for the image that will resolve when the image is available, or
|
||||
* undefined if there are too many active requests to the server, and the request should be retried later.
|
||||
*/
|
||||
BingMapsImageryProvider.prototype.requestImage = function (
|
||||
x,
|
||||
y,
|
||||
level,
|
||||
request,
|
||||
) {
|
||||
const promise = ImageryProvider.loadImage(
|
||||
this,
|
||||
buildImageResource(this, x, y, level, request),
|
||||
);
|
||||
|
||||
if (defined(promise)) {
|
||||
return promise.catch(function (error) {
|
||||
// One cause of an error here is that the image we tried to load was zero-length.
|
||||
// This isn't actually a problem, since it indicates that there is no tile.
|
||||
// So, in that case we return the EMPTY_IMAGE sentinel value for later discarding.
|
||||
if (defined(error.blob) && error.blob.size === 0) {
|
||||
return DiscardEmptyTilePolicy.EMPTY_IMAGE;
|
||||
}
|
||||
return Promise.reject(error);
|
||||
});
|
||||
}
|
||||
|
||||
return undefined;
|
||||
};
|
||||
|
||||
/**
|
||||
* Picking features is not currently supported by this imagery provider, so this function simply returns
|
||||
* undefined.
|
||||
*
|
||||
* @param {number} x The tile X coordinate.
|
||||
* @param {number} y The tile Y coordinate.
|
||||
* @param {number} level The tile level.
|
||||
* @param {number} longitude The longitude at which to pick features.
|
||||
* @param {number} latitude The latitude at which to pick features.
|
||||
* @return {undefined} Undefined since picking is not supported.
|
||||
*/
|
||||
BingMapsImageryProvider.prototype.pickFeatures = function (
|
||||
x,
|
||||
y,
|
||||
level,
|
||||
longitude,
|
||||
latitude,
|
||||
) {
|
||||
return undefined;
|
||||
};
|
||||
|
||||
/**
|
||||
* Converts a tiles (x, y, level) position into a quadkey used to request an image
|
||||
* from a Bing Maps server.
|
||||
*
|
||||
* @param {number} x The tile's x coordinate.
|
||||
* @param {number} y The tile's y coordinate.
|
||||
* @param {number} level The tile's zoom level.
|
||||
*
|
||||
* @see {@link http://msdn.microsoft.com/en-us/library/bb259689.aspx|Bing Maps Tile System}
|
||||
* @see BingMapsImageryProvider#quadKeyToTileXY
|
||||
*/
|
||||
BingMapsImageryProvider.tileXYToQuadKey = function (x, y, level) {
|
||||
let quadkey = "";
|
||||
for (let i = level; i >= 0; --i) {
|
||||
const bitmask = 1 << i;
|
||||
let digit = 0;
|
||||
|
||||
if ((x & bitmask) !== 0) {
|
||||
digit |= 1;
|
||||
}
|
||||
|
||||
if ((y & bitmask) !== 0) {
|
||||
digit |= 2;
|
||||
}
|
||||
|
||||
quadkey += digit;
|
||||
}
|
||||
return quadkey;
|
||||
};
|
||||
|
||||
/**
|
||||
* Converts a tile's quadkey used to request an image from a Bing Maps server into the
|
||||
* (x, y, level) position.
|
||||
*
|
||||
* @param {string} quadkey The tile's quad key
|
||||
*
|
||||
* @see {@link http://msdn.microsoft.com/en-us/library/bb259689.aspx|Bing Maps Tile System}
|
||||
* @see BingMapsImageryProvider#tileXYToQuadKey
|
||||
*/
|
||||
BingMapsImageryProvider.quadKeyToTileXY = function (quadkey) {
|
||||
let x = 0;
|
||||
let y = 0;
|
||||
const level = quadkey.length - 1;
|
||||
for (let i = level; i >= 0; --i) {
|
||||
const bitmask = 1 << i;
|
||||
const digit = +quadkey[level - i];
|
||||
|
||||
if ((digit & 1) !== 0) {
|
||||
x |= bitmask;
|
||||
}
|
||||
|
||||
if ((digit & 2) !== 0) {
|
||||
y |= bitmask;
|
||||
}
|
||||
}
|
||||
return {
|
||||
x: x,
|
||||
y: y,
|
||||
level: level,
|
||||
};
|
||||
};
|
||||
|
||||
BingMapsImageryProvider._logoUrl = undefined;
|
||||
|
||||
Object.defineProperties(BingMapsImageryProvider, {
|
||||
/**
|
||||
* Gets or sets the URL to the Bing logo for display in the credit.
|
||||
* @memberof BingMapsImageryProvider
|
||||
* @type {string}
|
||||
*/
|
||||
logoUrl: {
|
||||
get: function () {
|
||||
if (!defined(BingMapsImageryProvider._logoUrl)) {
|
||||
BingMapsImageryProvider._logoUrl = buildModuleUrl(
|
||||
"Assets/Images/bing_maps_credit.png",
|
||||
);
|
||||
}
|
||||
return BingMapsImageryProvider._logoUrl;
|
||||
},
|
||||
set: function (value) {
|
||||
//>>includeStart('debug', pragmas.debug);
|
||||
Check.defined("value", value);
|
||||
//>>includeEnd('debug');
|
||||
|
||||
BingMapsImageryProvider._logoUrl = value;
|
||||
},
|
||||
},
|
||||
});
|
||||
|
||||
function buildImageResource(imageryProvider, x, y, level, request) {
|
||||
const imageUrl = imageryProvider._imageUrlTemplate;
|
||||
|
||||
const subdomains = imageryProvider._imageUrlSubdomains;
|
||||
const subdomainIndex = (x + y + level) % subdomains.length;
|
||||
|
||||
return imageryProvider._resource.getDerivedResource({
|
||||
url: imageUrl,
|
||||
request: request,
|
||||
templateValues: {
|
||||
quadkey: BingMapsImageryProvider.tileXYToQuadKey(x, y, level),
|
||||
subdomain: subdomains[subdomainIndex],
|
||||
culture: imageryProvider._culture,
|
||||
},
|
||||
queryParameters: {
|
||||
// this parameter tells the Bing servers to send a zero-length response
|
||||
// instead of a placeholder image for missing tiles.
|
||||
n: "z",
|
||||
},
|
||||
});
|
||||
}
|
||||
|
||||
const intersectionScratch = new Rectangle();
|
||||
|
||||
function getRectangleAttribution(attributionList, level, rectangle) {
|
||||
// Bing levels start at 1, while ours start at 0.
|
||||
++level;
|
||||
|
||||
const result = [];
|
||||
|
||||
for (
|
||||
let attributionIndex = 0, attributionLength = attributionList.length;
|
||||
attributionIndex < attributionLength;
|
||||
++attributionIndex
|
||||
) {
|
||||
const attribution = attributionList[attributionIndex];
|
||||
const coverageAreas = attribution.coverageAreas;
|
||||
|
||||
let included = false;
|
||||
|
||||
for (
|
||||
let areaIndex = 0, areaLength = attribution.coverageAreas.length;
|
||||
!included && areaIndex < areaLength;
|
||||
++areaIndex
|
||||
) {
|
||||
const area = coverageAreas[areaIndex];
|
||||
if (level >= area.zoomMin && level <= area.zoomMax) {
|
||||
const intersection = Rectangle.intersection(
|
||||
rectangle,
|
||||
area.bbox,
|
||||
intersectionScratch,
|
||||
);
|
||||
if (defined(intersection)) {
|
||||
included = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (included) {
|
||||
result.push(attribution.credit);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// Exposed for testing
|
||||
BingMapsImageryProvider._metadataCache = {};
|
||||
export default BingMapsImageryProvider;
|
||||
Reference in New Issue
Block a user