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import Cartesian2 from "../Core/Cartesian2.js";
import Cartesian3 from "../Core/Cartesian3.js";
import Cartographic from "../Core/Cartographic.js";
import Credit from "../Core/Credit.js";
import defaultValue from "../Core/defaultValue.js";
import defined from "../Core/defined.js";
import DeveloperError from "../Core/DeveloperError.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 TileProviderError from "../Core/TileProviderError.js";
import WebMercatorProjection from "../Core/WebMercatorProjection.js";
import WebMercatorTilingScheme from "../Core/WebMercatorTilingScheme.js";
import when from "../ThirdParty/when.js";
import DiscardMissingTileImagePolicy from "./DiscardMissingTileImagePolicy.js";
import ImageryLayerFeatureInfo from "./ImageryLayerFeatureInfo.js";
import ImageryProvider from "./ImageryProvider.js";
/**
* @typedef {Object} ArcGisMapServerImageryProvider.ConstructorOptions
*
* Initialization options for the ArcGisMapServerImageryProvider constructor
*
* @property {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 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 {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] 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 {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 Resource Sharing}
*/
function ArcGisMapServerImageryProvider(options) {
options = defaultValue(options, defaultValue.EMPTY_OBJECT);
//>>includeStart('debug', pragmas.debug);
if (!defined(options.url)) {
throw new 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;
var resource = Resource.createIfNeeded(options.url);
resource.appendForwardSlash();
if (defined(options.token)) {
resource.setQueryParameters({
token: options.token,
});
}
this._resource = resource;
this._tileDiscardPolicy = options.tileDiscardPolicy;
this._tileWidth = defaultValue(options.tileWidth, 256);
this._tileHeight = defaultValue(options.tileHeight, 256);
this._maximumLevel = options.maximumLevel;
this._tilingScheme = defaultValue(
options.tilingScheme,
new GeographicTilingScheme({ ellipsoid: options.ellipsoid })
);
this._useTiles = defaultValue(options.usePreCachedTilesIfAvailable, true);
this._rectangle = defaultValue(
options.rectangle,
this._tilingScheme.rectangle
);
this._layers = options.layers;
var credit = options.credit;
if (typeof credit === "string") {
credit = new Credit(credit);
}
this._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 = defaultValue(options.enablePickFeatures, true);
this._errorEvent = new Event();
this._ready = false;
this._readyPromise = when.defer();
// Grab the details of this MapServer.
var that = this;
var metadataError;
function metadataSuccess(data) {
var tileInfo = data.tileInfo;
if (!defined(tileInfo)) {
that._useTiles = false;
} else {
that._tileWidth = tileInfo.rows;
that._tileHeight = tileInfo.cols;
if (
tileInfo.spatialReference.wkid === 102100 ||
tileInfo.spatialReference.wkid === 102113
) {
that._tilingScheme = new WebMercatorTilingScheme({
ellipsoid: options.ellipsoid,
});
} else if (data.tileInfo.spatialReference.wkid === 4326) {
that._tilingScheme = new GeographicTilingScheme({
ellipsoid: options.ellipsoid,
});
} else {
var message =
"Tile spatial reference WKID " +
data.tileInfo.spatialReference.wkid +
" is not supported.";
metadataError = TileProviderError.handleError(
metadataError,
that,
that._errorEvent,
message,
undefined,
undefined,
undefined,
requestMetadata
);
return;
}
that._maximumLevel = data.tileInfo.lods.length - 1;
if (defined(data.fullExtent)) {
if (
defined(data.fullExtent.spatialReference) &&
defined(data.fullExtent.spatialReference.wkid)
) {
if (
data.fullExtent.spatialReference.wkid === 102100 ||
data.fullExtent.spatialReference.wkid === 102113
) {
var projection = new WebMercatorProjection();
var extent = data.fullExtent;
var sw = projection.unproject(
new Cartesian3(
Math.max(
extent.xmin,
-that._tilingScheme.ellipsoid.maximumRadius * Math.PI
),
Math.max(
extent.ymin,
-that._tilingScheme.ellipsoid.maximumRadius * Math.PI
),
0.0
)
);
var ne = projection.unproject(
new Cartesian3(
Math.min(
extent.xmax,
that._tilingScheme.ellipsoid.maximumRadius * Math.PI
),
Math.min(
extent.ymax,
that._tilingScheme.ellipsoid.maximumRadius * Math.PI
),
0.0
)
);
that._rectangle = new Rectangle(
sw.longitude,
sw.latitude,
ne.longitude,
ne.latitude
);
} else if (data.fullExtent.spatialReference.wkid === 4326) {
that._rectangle = Rectangle.fromDegrees(
data.fullExtent.xmin,
data.fullExtent.ymin,
data.fullExtent.xmax,
data.fullExtent.ymax
);
} else {
var extentMessage =
"fullExtent.spatialReference WKID " +
data.fullExtent.spatialReference.wkid +
" is not supported.";
metadataError = TileProviderError.handleError(
metadataError,
that,
that._errorEvent,
extentMessage,
undefined,
undefined,
undefined,
requestMetadata
);
return;
}
}
} else {
that._rectangle = that._tilingScheme.rectangle;
}
// Install the default tile discard policy if none has been supplied.
if (!defined(that._tileDiscardPolicy)) {
that._tileDiscardPolicy = new DiscardMissingTileImagePolicy({
missingImageUrl: buildImageResource(that, 0, 0, that._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,
});
}
that._useTiles = true;
}
if (defined(data.copyrightText) && data.copyrightText.length > 0) {
that._credit = new Credit(data.copyrightText);
}
that._ready = true;
that._readyPromise.resolve(true);
TileProviderError.handleSuccess(metadataError);
}
function metadataFailure(e) {
var message =
"An error occurred while accessing " + that._resource.url + ".";
metadataError = TileProviderError.handleError(
metadataError,
that,
that._errorEvent,
message,
undefined,
undefined,
undefined,
requestMetadata
);
that._readyPromise.reject(new RuntimeError(message));
}
function requestMetadata() {
var resource = that._resource.getDerivedResource({
queryParameters: {
f: "json",
},
});
var metadata = resource.fetchJsonp();
when(metadata, metadataSuccess, metadataFailure);
}
if (this._useTiles) {
requestMetadata();
} else {
this._ready = true;
this._readyPromise.resolve(true);
}
}
function buildImageResource(imageryProvider, x, y, level, request) {
var resource;
if (imageryProvider._useTiles) {
resource = imageryProvider._resource.getDerivedResource({
url: "tile/" + level + "/" + y + "/" + x,
request: request,
});
} else {
var nativeRectangle = imageryProvider._tilingScheme.tileXYToNativeRectangle(
x,
y,
level
);
var bbox =
nativeRectangle.west +
"," +
nativeRectangle.south +
"," +
nativeRectangle.east +
"," +
nativeRectangle.north;
var 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. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Number}
* @readonly
*/
tileWidth: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"tileWidth must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
return this._tileWidth;
},
},
/**
* Gets the height of each tile, in pixels. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Number}
* @readonly
*/
tileHeight: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"tileHeight must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
return this._tileHeight;
},
},
/**
* Gets the maximum level-of-detail that can be requested. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Number|undefined}
* @readonly
*/
maximumLevel: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"maximumLevel must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
return this._maximumLevel;
},
},
/**
* Gets the minimum level-of-detail that can be requested. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Number}
* @readonly
*/
minimumLevel: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"minimumLevel must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
return 0;
},
},
/**
* Gets the tiling scheme used by this provider. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {TilingScheme}
* @readonly
*/
tilingScheme: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"tilingScheme must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
return this._tilingScheme;
},
},
/**
* Gets the rectangle, in radians, of the imagery provided by this instance. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Rectangle}
* @readonly
*/
rectangle: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"rectangle must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
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. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {TileDiscardPolicy}
* @readonly
*/
tileDiscardPolicy: {
get: function () {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"tileDiscardPolicy must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
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 a value indicating whether or not the provider is ready for use.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Boolean}
* @readonly
*/
ready: {
get: function () {
return this._ready;
},
},
/**
* Gets a promise that resolves to true when the provider is ready for use.
* @memberof ArcGisMapServerImageryProvider.prototype
* @type {Promise.<Boolean>}
* @readonly
*/
readyPromise: {
get: function () {
return this._readyPromise.promise;
},
},
/**
* Gets the credit to display when this imagery provider is active. Typically this is used to credit
* the source of the imagery. This function should not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
* @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. If the imagery provider is not yet ready ({@link ArcGisMapServerImageryProvider#ready}), this function
* will return the value of `options.usePreCachedTilesIfAvailable`, even if the MapServer does
* not have pre-cached tiles.
* @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;
},
},
});
/**
* 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.
*
* @exception {DeveloperError} <code>getTileCredits</code> must not be called before the imagery provider is ready.
*/
ArcGisMapServerImageryProvider.prototype.getTileCredits = function (
x,
y,
level
) {
return undefined;
};
/**
* Requests the image for a given tile. This function should
* not be called before {@link ArcGisMapServerImageryProvider#ready} returns true.
*
* @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.<HTMLImageElement|HTMLCanvasElement>|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. The resolved image may be either an
* Image or a Canvas DOM object.
*
* @exception {DeveloperError} <code>requestImage</code> must not be called before the imagery provider is ready.
*/
ArcGisMapServerImageryProvider.prototype.requestImage = function (
x,
y,
level,
request
) {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"requestImage must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
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. This function should not be called before {@link ImageryProvider#ready} returns true.
*
* @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.
*
* @exception {DeveloperError} <code>pickFeatures</code> must not be called before the imagery provider is ready.
*/
ArcGisMapServerImageryProvider.prototype.pickFeatures = function (
x,
y,
level,
longitude,
latitude
) {
//>>includeStart('debug', pragmas.debug);
if (!this._ready) {
throw new DeveloperError(
"pickFeatures must not be called before the imagery provider is ready."
);
}
//>>includeEnd('debug');
if (!this.enablePickFeatures) {
return undefined;
}
var rectangle = this._tilingScheme.tileXYToNativeRectangle(x, y, level);
var horizontal;
var vertical;
var sr;
if (this._tilingScheme.projection instanceof GeographicProjection) {
horizontal = CesiumMath.toDegrees(longitude);
vertical = CesiumMath.toDegrees(latitude);
sr = "4326";
} else {
var projected = this._tilingScheme.projection.project(
new Cartographic(longitude, latitude, 0.0)
);
horizontal = projected.x;
vertical = projected.y;
sr = "3857";
}
var layers = "visible";
if (defined(this._layers)) {
layers += ":" + this._layers;
}
var 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,
};
var resource = this._resource.getDerivedResource({
url: "identify",
queryParameters: query,
});
return resource.fetchJson().then(function (json) {
var result = [];
var features = json.results;
if (!defined(features)) {
return result;
}
for (var i = 0; i < features.length; ++i) {
var feature = features[i];
var 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.
if (feature.geometryType === "esriGeometryPoint" && feature.geometry) {
var 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 if (wkid === 102100 || wkid === 900913 || wkid === 3857) {
var projection = new WebMercatorProjection();
featureInfo.position = projection.unproject(
new Cartesian3(
feature.geometry.x,
feature.geometry.y,
feature.geometry.z
)
);
}
}
result.push(featureInfo);
}
return result;
});
};
export default ArcGisMapServerImageryProvider;