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import Cartesian3 from "../Core/Cartesian3.js";
import Cartographic from "../Core/Cartographic.js";
import Check from "../Core/Check.js";
import Credit from "../Core/Credit.js";
import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import Event from "../Core/Event.js";
import GeographicProjection from "../Core/GeographicProjection.js";
import GeographicTilingScheme from "../Core/GeographicTilingScheme.js";
import CesiumMath from "../Core/Math.js";
import Rectangle from "../Core/Rectangle.js";
import Resource from "../Core/Resource.js";
import RuntimeError from "../Core/RuntimeError.js";
import WebMercatorProjection from "../Core/WebMercatorProjection.js";
import WebMercatorTilingScheme from "../Core/WebMercatorTilingScheme.js";
import ArcGisMapService from "./ArcGisMapService.js";
import DiscardMissingTileImagePolicy from "./DiscardMissingTileImagePolicy.js";
import ImageryLayerFeatureInfo from "./ImageryLayerFeatureInfo.js";
import ImageryProvider from "./ImageryProvider.js";
import ArcGisBaseMapType from "./ArcGisBaseMapType.js";
import DeveloperError from "../Core/DeveloperError.js";
/**
* @typedef {object} ArcGisMapServerImageryProvider.ConstructorOptions
*
* Initialization options for the ArcGisMapServerImageryProvider constructor
*
* @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 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. Exporting Tiles is only supported with deprecated APIs.
* @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 {Rectangle} [rectangle=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=Ellipsoid.default] 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 default ellipsoid is used.
* @property {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.
*
*
*/
/**
* Used to track creation details while fetching initial metadata
*
* @constructor
* @private
*
* @param {ArcGisMapServerImageryProvider.ConstructorOptions} options An object describing initialization options
*/
function ImageryProviderBuilder(options) {
this.useTiles = options.usePreCachedTilesIfAvailable ?? true;
const ellipsoid = options.ellipsoid;
this.tilingScheme =
options.tilingScheme ??
new GeographicTilingScheme({ ellipsoid: ellipsoid });
this.rectangle = options.rectangle ?? this.tilingScheme.rectangle;
this.ellipsoid = ellipsoid;
let credit = options.credit;
Iif (typeof credit === "string") {
credit = new Credit(credit);
}
this.credit = credit;
this.tileCredits = undefined;
this.tileDiscardPolicy = options.tileDiscardPolicy;
this.tileWidth = options.tileWidth ?? 256;
this.tileHeight = options.tileHeight ?? 256;
this.maximumLevel = options.maximumLevel;
}
/**
* Complete ArcGisMapServerImageryProvider creation based on builder values.
*
* @private
*
* @param {ArcGisMapServerImageryProvider} provider
*/
ImageryProviderBuilder.prototype.build = function (provider) {
provider._useTiles = this.useTiles;
provider._tilingScheme = this.tilingScheme;
provider._rectangle = this.rectangle;
provider._credit = this.credit;
provider._tileCredits = this.tileCredits;
provider._tileDiscardPolicy = this.tileDiscardPolicy;
provider._tileWidth = this.tileWidth;
provider._tileHeight = this.tileHeight;
provider._maximumLevel = this.maximumLevel;
// Install the default tile discard policy if none has been supplied.
if (this.useTiles && !defined(this.tileDiscardPolicy)) {
provider._tileDiscardPolicy = new DiscardMissingTileImagePolicy({
missingImageUrl: buildImageResource(provider, 0, 0, this.maximumLevel)
.url,
pixelsToCheck: [
new Cartesian2(0, 0),
new Cartesian2(200, 20),
new Cartesian2(20, 200),
new Cartesian2(80, 110),
new Cartesian2(160, 130),
],
disableCheckIfAllPixelsAreTransparent: true,
});
}
};
function metadataSuccess(data, imageryProviderBuilder) {
const tileInfo = data.tileInfo;
if (!defined(tileInfo)) {
imageryProviderBuilder.useTiles = false;
} else {
imageryProviderBuilder.tileWidth = tileInfo.rows;
imageryProviderBuilder.tileHeight = tileInfo.cols;
if (
tileInfo.spatialReference.wkid === 102100 ||
tileInfo.spatialReference.wkid === 102113
) {
imageryProviderBuilder.tilingScheme = new WebMercatorTilingScheme({
ellipsoid: imageryProviderBuilder.ellipsoid,
});
} else if (data.tileInfo.spatialReference.wkid === 4326) {
imageryProviderBuilder.tilingScheme = new GeographicTilingScheme({
ellipsoid: imageryProviderBuilder.ellipsoid,
});
} else {
const message = `Tile spatial reference WKID ${data.tileInfo.spatialReference.wkid} is not supported.`;
throw new RuntimeError(message);
}
imageryProviderBuilder.maximumLevel = data.tileInfo.lods.length - 1;
if (defined(data.fullExtent)) {
Eif (
defined(data.fullExtent.spatialReference) &&
defined(data.fullExtent.spatialReference.wkid)
) {
if (
data.fullExtent.spatialReference.wkid === 102100 ||
data.fullExtent.spatialReference.wkid === 102113
) {
const projection = new WebMercatorProjection();
const extent = data.fullExtent;
const sw = projection.unproject(
new Cartesian3(
Math.max(
extent.xmin,
-imageryProviderBuilder.tilingScheme.ellipsoid.maximumRadius *
Math.PI,
),
Math.max(
extent.ymin,
-imageryProviderBuilder.tilingScheme.ellipsoid.maximumRadius *
Math.PI,
),
0.0,
),
);
const ne = projection.unproject(
new Cartesian3(
Math.min(
extent.xmax,
imageryProviderBuilder.tilingScheme.ellipsoid.maximumRadius *
Math.PI,
),
Math.min(
extent.ymax,
imageryProviderBuilder.tilingScheme.ellipsoid.maximumRadius *
Math.PI,
),
0.0,
),
);
imageryProviderBuilder.rectangle = new Rectangle(
sw.longitude,
sw.latitude,
ne.longitude,
ne.latitude,
);
} else if (data.fullExtent.spatialReference.wkid === 4326) {
imageryProviderBuilder.rectangle = Rectangle.fromDegrees(
data.fullExtent.xmin,
data.fullExtent.ymin,
data.fullExtent.xmax,
data.fullExtent.ymax,
);
} else {
const extentMessage = `fullExtent.spatialReference WKID ${data.fullExtent.spatialReference.wkid} is not supported.`;
throw new RuntimeError(extentMessage);
}
}
} else {
imageryProviderBuilder.rectangle =
imageryProviderBuilder.tilingScheme.rectangle;
}
imageryProviderBuilder.useTiles = true;
}
if (defined(data.copyrightText) && data.copyrightText.length > 0) {
if (defined(imageryProviderBuilder.credit)) {
imageryProviderBuilder.tileCredits = [new Credit(data.copyrightText)];
} else {
imageryProviderBuilder.credit = new Credit(data.copyrightText);
}
}
}
function metadataFailure(resource, error) {
let message = `An error occurred while accessing ${resource.url}`;
if (defined(error) && defined(error.message)) {
message += `: ${error.message}`;
}
throw new RuntimeError(message);
}
async function requestMetadata(resource, imageryProviderBuilder) {
const jsonResource = resource.getDerivedResource({
queryParameters: {
f: "json",
},
});
try {
const data = await jsonResource.fetchJson();
metadataSuccess(data, imageryProviderBuilder);
} catch (error) {
metadataFailure(resource, error);
}
}
/**
* <div class="notice">
* This object is normally not instantiated directly, use {@link ArcGisMapServerImageryProvider.fromBasemapType} or {@link ArcGisMapServerImageryProvider.fromUrl}.
* </div>
*
* Provides tiled imagery hosted by an ArcGIS MapServer. By default, the server's pre-cached tiles are
* used, if available.
*
* <br/>
*
* An {@link https://developers.arcgis.com/documentation/mapping-apis-and-services/security| ArcGIS Access Token } is required to authenticate requests to an ArcGIS Image Tile service.
* To access secure ArcGIS resources, it's required to create an ArcGIS developer
* account or an ArcGIS online account, then implement an authentication method to obtain an access token.
*
* @alias ArcGisMapServerImageryProvider
* @constructor
*
* @param {ArcGisMapServerImageryProvider.ConstructorOptions} [options] Object describing initialization options
*
* @see ArcGisMapServerImageryProvider.fromBasemapType
* @see ArcGisMapServerImageryProvider.fromUrl
*
* @example
* // Set the default access token for accessing ArcGIS Image Tile service
* Cesium.ArcGisMapService.defaultAccessToken = "<ArcGIS Access Token>";
*
* // Add a base layer from a default ArcGIS basemap
* const viewer = new Cesium.Viewer("cesiumContainer", {
* baseLayer: Cesium.ImageryLayer.fromProviderAsync(
* Cesium.ArcGisMapServerImageryProvider.fromBasemapType(
* Cesium.ArcGisBaseMapType.SATELLITE
* )
* ),
* });
*
* @example
* // Create an imagery provider from the url directly
* const esri = await Cesium.ArcGisMapServerImageryProvider.fromUrl(
* "https://ibasemaps-api.arcgis.com/arcgis/rest/services/World_Imagery/MapServer", {
* token: "<ArcGIS Access Token>"
* });
*
* @see {@link https://developers.arcgis.com/rest/|ArcGIS Server REST API}
* @see {@link https://developers.arcgis.com/documentation/mapping-apis-and-services/security| ArcGIS Access Token }
*/
function ArcGisMapServerImageryProvider(options) {
options = options ?? Frozen.EMPTY_OBJECT;
this._defaultAlpha = undefined;
this._defaultNightAlpha = undefined;
this._defaultDayAlpha = undefined;
this._defaultBrightness = undefined;
this._defaultContrast = undefined;
this._defaultHue = undefined;
this._defaultSaturation = undefined;
this._defaultGamma = undefined;
this._defaultMinificationFilter = undefined;
this._defaultMagnificationFilter = undefined;
this._tileDiscardPolicy = options.tileDiscardPolicy;
this._tileWidth = options.tileWidth ?? 256;
this._tileHeight = options.tileHeight ?? 256;
this._maximumLevel = options.maximumLevel;
this._tilingScheme =
options.tilingScheme ??
new GeographicTilingScheme({ ellipsoid: options.ellipsoid });
this._useTiles = options.usePreCachedTilesIfAvailable ?? true;
this._rectangle = options.rectangle ?? this._tilingScheme.rectangle;
this._layers = options.layers;
this._credit = options.credit;
this._tileCredits = undefined;
let credit = options.credit;
Iif (typeof credit === "string") {
credit = new Credit(credit);
}
/**
* Gets or sets a value indicating whether feature picking is enabled. If true, {@link ArcGisMapServerImageryProvider#pickFeatures} will
* invoke the "identify" operation on the ArcGIS server 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.
* @type {boolean}
* @default true
*/
this.enablePickFeatures = options.enablePickFeatures ?? true;
this._errorEvent = new Event();
}
/**
* Creates an {@link ImageryProvider} which provides tiled imagery from an ArcGIS base map.
* @param {ArcGisBaseMapType} style The style of the ArcGIS base map imagery. Valid options are {@link ArcGisBaseMapType.SATELLITE}, {@link ArcGisBaseMapType.OCEANS}, and {@link ArcGisBaseMapType.HILLSHADE}.
* @param {ArcGisMapServerImageryProvider.ConstructorOptions} [options] Object describing initialization options.
* @returns {Promise<ArcGisMapServerImageryProvider>} A promise that resolves to the created ArcGisMapServerImageryProvider.
*
* @example
* // Set the default access token for accessing ArcGIS Image Tile service
* Cesium.ArcGisMapService.defaultAccessToken = "<ArcGIS Access Token>";
*
* // Add a base layer from a default ArcGIS basemap
* const provider = await Cesium.ArcGisMapServerImageryProvider.fromBasemapType(
* Cesium.ArcGisBaseMapType.SATELLITE);
*
* @example
* // Add a base layer from a default ArcGIS Basemap
* const viewer = new Cesium.Viewer("cesiumContainer", {
* baseLayer: Cesium.ImageryLayer.fromProviderAsync(
* Cesium.ArcGisMapServerImageryProvider.fromBasemapType(
* Cesium.ArcGisBaseMapType.HILLSHADE, {
* token: "<ArcGIS Access Token>"
* }
* )
* ),
* });
*/
ArcGisMapServerImageryProvider.fromBasemapType = async function (
style,
options,
) {
//>>includeStart('debug', pragmas.debug);
Check.defined("style", style);
//>>includeEnd('debug');
options = options ?? Frozen.EMPTY_OBJECT;
let accessToken;
let server;
let warningCredit;
switch (style) {
case ArcGisBaseMapType.SATELLITE:
{
accessToken = options.token ?? ArcGisMapService.defaultAccessToken;
server = Resource.createIfNeeded(
ArcGisMapService.defaultWorldImageryServer,
);
server.appendForwardSlash();
const defaultTokenCredit =
ArcGisMapService.getDefaultTokenCredit(accessToken);
if (defined(defaultTokenCredit)) {
warningCredit = Credit.clone(defaultTokenCredit);
}
}
break;
case ArcGisBaseMapType.OCEANS:
{
accessToken = options.token ?? ArcGisMapService.defaultAccessToken;
server = Resource.createIfNeeded(
ArcGisMapService.defaultWorldOceanServer,
);
server.appendForwardSlash();
const defaultTokenCredit =
ArcGisMapService.getDefaultTokenCredit(accessToken);
if (defined(defaultTokenCredit)) {
warningCredit = Credit.clone(defaultTokenCredit);
}
}
break;
case ArcGisBaseMapType.HILLSHADE:
{
accessToken = options.token ?? ArcGisMapService.defaultAccessToken;
server = Resource.createIfNeeded(
ArcGisMapService.defaultWorldHillshadeServer,
);
server.appendForwardSlash();
const defaultTokenCredit =
ArcGisMapService.getDefaultTokenCredit(accessToken);
if (defined(defaultTokenCredit)) {
warningCredit = Credit.clone(defaultTokenCredit);
}
}
break;
default:
//>>includeStart('debug', pragmas.debug);
throw new DeveloperError(`Unsupported basemap type: ${style}`);
//>>includeEnd('debug');
}
return ArcGisMapServerImageryProvider.fromUrl(server, {
...options,
token: accessToken,
credit: warningCredit,
usePreCachedTilesIfAvailable: true, // ArcGIS Base Map Service Layers only support Tiled views
});
};
function buildImageResource(imageryProvider, x, y, level, request) {
let resource;
if (imageryProvider._useTiles) {
resource = imageryProvider._resource.getDerivedResource({
url: `tile/${level}/${y}/${x}`,
request: request,
});
} else {
const nativeRectangle =
imageryProvider._tilingScheme.tileXYToNativeRectangle(x, y, level);
const bbox = `${nativeRectangle.west},${nativeRectangle.south},${nativeRectangle.east},${nativeRectangle.north}`;
const query = {
bbox: bbox,
size: `${imageryProvider._tileWidth},${imageryProvider._tileHeight}`,
format: "png32",
transparent: true,
f: "image",
};
if (
imageryProvider._tilingScheme.projection instanceof GeographicProjection
) {
query.bboxSR = 4326;
query.imageSR = 4326;
} else {
query.bboxSR = 3857;
query.imageSR = 3857;
}
if (imageryProvider.layers) {
query.layers = `show:${imageryProvider.layers}`;
}
resource = imageryProvider._resource.getDerivedResource({
url: "export",
request: request,
queryParameters: query,
});
}
return resource;
}
Object.defineProperties(ArcGisMapServerImageryProvider.prototype, {
/**
* Gets the URL of the ArcGIS MapServer.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {string}
* @readonly
*/
url: {
get: function () {
return this._resource._url;
},
},
/**
* Gets the ArcGIS token used to authenticate with the ArcGis MapServer service.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {string}
* @readonly
*/
token: {
get: function () {
return this._resource.queryParameters.token;
},
},
/**
* Gets the proxy used by this provider.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Proxy}
* @readonly
*/
proxy: {
get: function () {
return this._resource.proxy;
},
},
/**
* Gets the width of each tile, in pixels.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {number}
* @readonly
*/
tileWidth: {
get: function () {
return this._tileWidth;
},
},
/**
* Gets the height of each tile, in pixels.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {number}
* @readonly
*/
tileHeight: {
get: function () {
return this._tileHeight;
},
},
/**
* Gets the maximum level-of-detail that can be requested.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {number|undefined}
* @readonly
*/
maximumLevel: {
get: function () {
return this._maximumLevel;
},
},
/**
* Gets the minimum level-of-detail that can be requested.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {number}
* @readonly
*/
minimumLevel: {
get: function () {
return 0;
},
},
/**
* Gets the tiling scheme used by this provider.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {TilingScheme}
* @readonly
*/
tilingScheme: {
get: function () {
return this._tilingScheme;
},
},
/**
* Gets the rectangle, in radians, of the imagery provided by this instance.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Rectangle}
* @readonly
*/
rectangle: {
get: function () {
return this._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 ArcGisMapServerImageryProvider.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 ArcGisMapServerImageryProvider.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 ArcGisMapServerImageryProvider.prototype
* @type {Credit}
* @readonly
*/
credit: {
get: function () {
return this._credit;
},
},
/**
* Gets a value indicating whether this imagery provider is using pre-cached tiles from the
* ArcGIS MapServer.
* @memberof ArcGisMapServerImageryProvider.prototype
*
* @type {boolean}
* @readonly
* @default true
*/
usingPrecachedTiles: {
get: function () {
return this._useTiles;
},
},
/**
* 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. When this property is false, memory usage
* and texture upload time are reduced.
* @memberof ArcGisMapServerImageryProvider.prototype
*
* @type {boolean}
* @readonly
* @default true
*/
hasAlphaChannel: {
get: function () {
return true;
},
},
/**
* Gets the comma-separated list of layer IDs to show.
* @memberof ArcGisMapServerImageryProvider.prototype
*
* @type {string}
*/
layers: {
get: function () {
return this._layers;
},
},
});
/**
* Creates an {@link ImageryProvider} which provides tiled imagery hosted by an ArcGIS MapServer. By default, the server's pre-cached tiles are
* used, if available.
*
* @param {Resource|string} url The URL of the ArcGIS MapServer service.
* @param {ArcGisMapServerImageryProvider.ConstructorOptions} [options] Object describing initialization options.
* @returns {Promise<ArcGisMapServerImageryProvider>} A promise that resolves to the created ArcGisMapServerImageryProvider.
*
* @example
* const esri = await Cesium.ArcGisMapServerImageryProvider.fromUrl(
* "https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"
* );
*
* @exception {RuntimeError} metadata spatial reference specifies an unknown WKID
* @exception {RuntimeError} metadata fullExtent.spatialReference specifies an unknown WKID
*/
ArcGisMapServerImageryProvider.fromUrl = async function (url, options) {
//>>includeStart('debug', pragmas.debug);
Check.defined("url", url);
//>>includeEnd('debug');
options = options ?? Frozen.EMPTY_OBJECT;
const resource = Resource.createIfNeeded(url);
resource.appendForwardSlash();
if (defined(options.token)) {
resource.setQueryParameters({
token: options.token,
});
}
const provider = new ArcGisMapServerImageryProvider(options);
provider._resource = resource;
const imageryProviderBuilder = new ImageryProviderBuilder(options);
const useTiles = options.usePreCachedTilesIfAvailable ?? true;
if (useTiles) {
await requestMetadata(resource, imageryProviderBuilder);
}
imageryProviderBuilder.build(provider);
return provider;
};
/**
* 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.
*/
ArcGisMapServerImageryProvider.prototype.getTileCredits = function (
x,
y,
level,
) {
return this._tileCredits;
};
/**
* 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.
*/
ArcGisMapServerImageryProvider.prototype.requestImage = function (
x,
y,
level,
request,
) {
return ImageryProvider.loadImage(
this,
buildImageResource(this, x, y, level, request),
);
};
/**
/**
* Asynchronously determines what features, if any, are located at a given longitude and latitude within
* a tile.
*
* @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 {Promise<ImageryLayerFeatureInfo[]>|undefined} A promise for the picked features that will resolve when the asynchronous
* picking completes. The resolved value is an array of {@link ImageryLayerFeatureInfo}
* instances. The array may be empty if no features are found at the given location.
*/
ArcGisMapServerImageryProvider.prototype.pickFeatures = function (
x,
y,
level,
longitude,
latitude,
) {
if (!this.enablePickFeatures) {
return undefined;
}
const rectangle = this._tilingScheme.tileXYToNativeRectangle(x, y, level);
let horizontal;
let vertical;
let sr;
if (this._tilingScheme.projection instanceof GeographicProjection) {
horizontal = CesiumMath.toDegrees(longitude);
vertical = CesiumMath.toDegrees(latitude);
sr = "4326";
} else E{
const projected = this._tilingScheme.projection.project(
new Cartographic(longitude, latitude, 0.0),
);
horizontal = projected.x;
vertical = projected.y;
sr = "3857";
}
let layers = "visible";
if (defined(this._layers)) {
layers += `:${this._layers}`;
}
const query = {
f: "json",
tolerance: 2,
geometryType: "esriGeometryPoint",
geometry: `${horizontal},${vertical}`,
mapExtent: `${rectangle.west},${rectangle.south},${rectangle.east},${rectangle.north}`,
imageDisplay: `${this._tileWidth},${this._tileHeight},96`,
sr: sr,
layers: layers,
};
const resource = this._resource.getDerivedResource({
url: "identify",
queryParameters: query,
});
return resource.fetchJson().then(function (json) {
const result = [];
const features = json.results;
Iif (!defined(features)) {
return result;
}
for (let i = 0; i < features.length; ++i) {
const feature = features[i];
const featureInfo = new ImageryLayerFeatureInfo();
featureInfo.data = feature;
featureInfo.name = feature.value;
featureInfo.properties = feature.attributes;
featureInfo.configureDescriptionFromProperties(feature.attributes);
// If this is a point feature, use the coordinates of the point.
Eif (feature.geometryType === "esriGeometryPoint" && feature.geometry) {
const wkid =
feature.geometry.spatialReference &&
feature.geometry.spatialReference.wkid
? feature.geometry.spatialReference.wkid
: 4326;
if (wkid === 4326 || wkid === 4283) {
featureInfo.position = Cartographic.fromDegrees(
feature.geometry.x,
feature.geometry.y,
feature.geometry.z,
);
} else Eif (wkid === 102100 || wkid === 900913 || wkid === 3857) {
const projection = new WebMercatorProjection();
featureInfo.position = projection.unproject(
new Cartesian3(
feature.geometry.x,
feature.geometry.y,
feature.geometry.z,
),
);
}
}
result.push(featureInfo);
}
return result;
});
};
ArcGisMapServerImageryProvider._metadataCache = {};
export default ArcGisMapServerImageryProvider;
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