arcgis加载4490图层所需js

import GeographicTilingScheme from "./GeographicTilingScheme" import when from "./when" // import { // Cesium.ImageryLayerFeatureInfo, // Cesium.DiscardMissingTileImagePolicy, // Cesium.WebMercatorTilingScheme, // Cesium.WebMercatorProjection, // Cesium.TileProviderError, // Cesium.RuntimeError, // Cesium.Resource, // Cesium.Rectangle, // Math as Cesium.Math, // Cesium.GeographicProjection, // Cesium.Event, // Cesium.DeveloperError, // Cesium.defined, // Cesium.defaultValue, // Cesium.Credit, // Cesium.Cartographic, // Cesium.Cartesian3, // Cesium.Cartesian2 // } from "cesium" /** * @typedef {Object} ArcGisMapServerImageryProvider.ConstructorOptions * * Initialization options for the ArcGisMapServerImageryProvider constructor * * @property {Cesium.Resource|String} url The URL of the ArcGIS MapServer service. * @property {String} [token] The ArcGIS token used to authenticate with the ArcGIS MapServer service. * @property {TileDiscardPolicy} [tileDiscardPolicy] The policy that determines if a tile * is invalid and should be discarded. If this value is not specified, a default * {@link Cesium.DiscardMissingTileImagePolicy} is used for tiled map servers, and a * {@link NeverTileDiscardPolicy} is used for non-tiled map servers. In the former case, * we request tile 0,0 at the maximum tile level and check pixels (0,0), (200,20), (20,200), * (80,110), and (160, 130). If all of these pixels are transparent, the discard check is * disabled and no tiles are discarded. If any of them have a non-transparent color, any * tile that has the same values in these pixel locations is discarded. The end result of * these defaults should be correct tile discarding for a standard ArcGIS Server. To ensure * that no tiles are discarded, construct and pass a {@link NeverTileDiscardPolicy} for this * parameter. * @property {Boolean} [usePreCachedTilesIfAvailable=true] If true, the server's pre-cached * tiles are used if they are available. If false, any pre-cached tiles are ignored and the * 'export' service is used. * @property {String} [layers] A comma-separated list of the layers to show, or undefined if all layers should be shown. * @property {Boolean} [enablePickFeatures=true] If true, {@link ArcGisMapServerImageryProvider#pickFeatures} will invoke * the Identify service on the MapServer and return the features included in the response. If false, * {@link ArcGisMapServerImageryProvider#pickFeatures} will immediately return undefined (indicating no pickable features) * without communicating with the server. Set this property to false if you don't want this provider's features to * be pickable. Can be overridden by setting the {@link ArcGisMapServerImageryProvider#enablePickFeatures} property on the object. * @property {Cesium.Rectangle} [rectangle=Cesium.Rectangle.MAX_VALUE] The rectangle of the layer. This parameter is ignored when accessing * a tiled layer. * @property {TilingScheme} [tilingScheme=new GeographicTilingScheme()] The tiling scheme to use to divide the world into tiles. * This parameter is ignored when accessing a tiled server. * @property {Ellipsoid} [ellipsoid] The ellipsoid. If the tilingScheme is specified and used, * this parameter is ignored and the tiling scheme's ellipsoid is used instead. If neither * parameter is specified, the WGS84 ellipsoid is used. * @property {Cesium.Credit|String} [credit] A credit for the data source, which is displayed on the canvas. This parameter is ignored when accessing a tiled server. * @property {Number} [tileWidth=256] The width of each tile in pixels. This parameter is ignored when accessing a tiled server. * @property {Number} [tileHeight=256] The height of each tile in pixels. This parameter is ignored when accessing a tiled server. * @property {Number} [maximumLevel] The maximum tile level to request, or undefined if there is no maximum. This parameter is ignored when accessing * a tiled server. */ /** * Provides tiled imagery hosted by an ArcGIS MapServer. By default, the server's pre-cached tiles are * used, if available. * * @alias ArcGisMapServerImageryProvider * @constructor * * @param {ArcGisMapServerImageryProvider.ConstructorOptions} options Object describing initialization options * * @see BingMapsImageryProvider * @see GoogleEarthEnterpriseMapsProvider * @see OpenStreetMapImageryProvider * @see SingleTileImageryProvider * @see TileMapServiceImageryProvider * @see WebMapServiceImageryProvider * @see WebMapTileServiceImageryProvider * @see UrlTemplateImageryProvider * * * @example * var esri = new Cesium.ArcGisMapServerImageryProvider({ * url : 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer' * }); * * @see {@link https://developers.arcgis.com/rest/|ArcGIS Server REST API} * @see {@link http://www.w3.org/TR/cors/|Cross-Origin Cesium.Resource Sharing} */ function ArcGisMapServerImageryProvider(options) { options = Cesium.defaultValue(options, Cesium.defaultValue.EMPTY_OBJECT) //>>includeStart('debug', pragmas.debug); if (!Cesium.defined(options.url)) { throw new Cesium.DeveloperError("options.url is required.") } //>>includeEnd('debug'); /** * The default alpha blending value of this provider, with 0.0 representing fully transparent and * 1.0 representing fully opaque. * * @type {Number|undefined} * @default undefined */ this.defaultAlpha = undefined /** * The default alpha blending value on the night side of the globe of this provider, with 0.0 representing fully transparent and * 1.0 representing fully opaque. * * @type {Number|undefined} * @default undefined */ this.defaultNightAlpha = undefined /** * The default alpha blending value on the day side of the globe of this provider, with 0.0 representing fully transparent and * 1.0 representing fully opaque. * * @type {Number|undefined} * @default undefined */ this.defaultDayAlpha = undefined /** * The default brightness of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 * makes the imagery darker while greater than 1.0 makes it brighter. * * @type {Number|undefined} * @default undefined */ this.defaultBrightness = undefined /** * The default contrast of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces * the contrast while greater than 1.0 increases it. * * @type {Number|undefined} * @default undefined */ this.defaultContrast = undefined /** * The default hue of this provider in radians. 0.0 uses the unmodified imagery color. * * @type {Number|undefined} * @default undefined */ this.defaultHue = undefined /** * The default saturation of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces the * saturation while greater than 1.0 increases it. * * @type {Number|undefined} * @default undefined */ this.defaultSaturation = undefined /** * The default gamma correction to apply to this provider. 1.0 uses the unmodified imagery color. * * @type {Number|undefined} * @default undefined */ this.defaultGamma = undefined /** * The default texture minification filter to apply to this provider. * * @type {TextureMinificationFilter} * @default undefined */ this.defaultMinificationFilter = undefined /** * The default texture magnification filter to apply to this provider. * * @type {TextureMagnificationFilter} * @default undefined */ this.defaultMagnificationFilter = undefined this._layerDefs = options.layerDefs this._layerName = options.layerName var resource = Cesium.Resource.create