ArcGISTiledElevationTerrainProvider
查阅Mars3D API

new Cesium.ArcGISTiledElevationTerrainProvider(options)
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 236

To construct a CesiumTerrainProvider, call ArcGISTiledElevationTerrainProvider.fromUrl. Do not call the constructor directly.
A TerrainProvider that produces terrain geometry by tessellating height maps retrieved from Elevation Tiles of an an ArcGIS ImageService.
参数名称 类型 描述信息
options CesiumTerrainProvider.ConstructorOptions 可选 A url or an object describing initialization options
使用示例:
const terrainProvider = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer", {
  token: "KED1aF_I4UzXOHy3BnhwyBHU4l5oY6rO6walkmHoYqGp4XyIWUd5YZUC1ZrLAzvV40pR6gBXQayh0eFA8m6vPg.."
});
viewer.terrainProvider = terrainProvider;
参考:

成员(属性)

readonly availability : TileAvailability
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 331

Gets an object that can be used to determine availability of terrain from this provider, such as at points and in rectangles. This property may be undefined if availability information is not available.

readonly credit : Credit
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 280

Gets the credit to display when this terrain provider is active. Typically this is used to credit the source of the terrain.

readonly errorEvent : Event
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 267

Gets an event that is raised when the terrain 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 TileProviderError.

readonly hasVertexNormals : boolean
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 318

Gets a value indicating whether or not the requested tiles include vertex normals.

readonly hasWaterMask : boolean
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 306

Gets a value indicating whether or not the provider includes a water mask. The water mask indicates which areas of the globe are water rather than land, so they can be rendered as a reflective surface with animated waves.

readonly tilingScheme : GeographicTilingScheme
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 292

Gets the tiling scheme used by this provider.

方法

static Cesium.ArcGISTiledElevationTerrainProvider.fromUrl(url, options) → Promise.<ArcGISTiledElevationTerrainProvider>
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 355

Creates a TerrainProvider that produces terrain geometry by tessellating height maps retrieved from Elevation Tiles of an an ArcGIS ImageService.
参数名称 类型 描述信息
url Resource | String | Promise.<Resource> | Promise.<String> The URL of the ArcGIS ImageServer service.
options ArcGISTiledElevationTerrainProvider.ConstructorOptions 可选 A url or an object describing initialization options.
返回值:
Throws:
使用示例:
const terrainProvider = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer", {
  token: "KED1aF_I4UzXOHy3BnhwyBHU4l5oY6rO6walkmHoYqGp4XyIWUd5YZUC1ZrLAzvV40pR6gBXQayh0eFA8m6vPg.."
});
viewer.terrainProvider = terrainProvider;

getLevelMaximumGeometricError(level) → number
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 504

Gets the maximum geometric error allowed in a tile at a given level.
参数名称 类型 描述信息
level number The tile level for which to get the maximum geometric error.
返回值:
The maximum geometric error.

getTileDataAvailable(x, y, level) → boolean|undefined
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 517

Determines whether data for a tile is available to be loaded.
参数名称 类型 描述信息
x number The X coordinate of the tile for which to request geometry.
y number The Y coordinate of the tile for which to request geometry.
level number The level of the tile for which to request geometry.
返回值:
Undefined if not supported, otherwise true or false.

loadTileDataAvailability(x, y, level) → undefined
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 544

Makes sure we load availability data for a tile
参数名称 类型 描述信息
x number The X coordinate of the tile for which to request geometry.
y number The Y coordinate of the tile for which to request geometry.
level number The level of the tile for which to request geometry.
返回值:
This provider does not support loading availability.

requestTileGeometry(x, y, level, request) → Promise.<TerrainData>|undefined
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 401

Requests the geometry for a given tile. The result includes terrain data and indicates that all child tiles are available.
参数名称 类型 描述信息
x number The X coordinate of the tile for which to request geometry.
y number The Y coordinate of the tile for which to request geometry.
level number The level of the tile for which to request geometry.
request Request 可选 The request object. Intended for internal use only.
返回值:
A promise for the requested geometry. If this method returns undefined instead of a promise, it is an indication that too many requests are already pending and the request will be retried later.

定义的类型

Cesium.ArcGISTiledElevationTerrainProvider.ConstructorOptions
engine/Source/Core/ArcGISTiledElevationTerrainProvider.js 24

Initialization options for the ArcGISTiledElevationTerrainProvider constructor
属性:
属性名称 类型 可选 默认值 描述信息
token string <可选>
 The authorization token to use to connect to the service.
ellipsoid Ellipsoid <可选>
 Ellipsoid.default The ellipsoid. If the tilingScheme is specified, this parameter is ignored and the tiling scheme's ellipsoid is used instead. If neither parameter is specified, the default ellipsoid is used.
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