VRTheWorldTerrainProvider
查阅Mars3D API

new Cesium.VRTheWorldTerrainProvider(options)
engine/Source/Core/VRTheWorldTerrainProvider.js 156

To construct a VRTheWorldTerrainProvider, call VRTheWorldTerrainProvider.fromUrl. Do not call the constructor directly.
A TerrainProvider that produces terrain geometry by tessellating height maps retrieved from a VT MÄK VR-TheWorld server.
参数名称 类型 描述信息
options VRTheWorldTerrainProvider.ConstructorOptions 可选 An object describing initialization options.
使用示例:
const terrainProvider = await Cesium.VRTheWorldTerrainProvider.fromUrl(
  "https://www.vr-theworld.com/vr-theworld/tiles1.0.0/73/"
);
viewer.terrainProvider = terrainProvider;
参考:

成员(属性)

readonly availability : TileAvailability
engine/Source/Core/VRTheWorldTerrainProvider.js 255

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/VRTheWorldTerrainProvider.js 204

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/VRTheWorldTerrainProvider.js 191

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/VRTheWorldTerrainProvider.js 242

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

readonly hasWaterMask : boolean
engine/Source/Core/VRTheWorldTerrainProvider.js 230

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/VRTheWorldTerrainProvider.js 216

Gets the tiling scheme used by this provider.

方法

static Cesium.VRTheWorldTerrainProvider.fromUrl(url, options) → Promise.<VRTheWorldTerrainProvider>
engine/Source/Core/VRTheWorldTerrainProvider.js 278

Creates a TerrainProvider that produces terrain geometry by tessellating height maps retrieved from a VT MÄK VR-TheWorld server.
参数名称 类型 描述信息
url Resource | String The URL of the VR-TheWorld TileMap.
options VRTheWorldTerrainProvider.ConstructorOptions 可选 An object describing initialization options.
返回值:
Throws:
使用示例:
const terrainProvider = await Cesium.VRTheWorldTerrainProvider.fromUrl(
  "https://www.vr-theworld.com/vr-theworld/tiles1.0.0/73/"
);
viewer.terrainProvider = terrainProvider;

getLevelMaximumGeometricError(level) → number
engine/Source/Core/VRTheWorldTerrainProvider.js 348

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/VRTheWorldTerrainProvider.js 437

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|Promise.<void>
engine/Source/Core/VRTheWorldTerrainProvider.js 453

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:
Undefined if nothing need to be loaded or a Promise that resolves when all required tiles are loaded

requestTileGeometry(x, y, level, request) → Promise.<TerrainData>|undefined
engine/Source/Core/VRTheWorldTerrainProvider.js 309

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.VRTheWorldTerrainProvider.ConstructorOptions
engine/Source/Core/VRTheWorldTerrainProvider.js 22

Initialization options for the VRTheWorldTerrainProvider constructor
属性:
属性名称 类型 可选 描述信息
ellipsoid Ellipsoid <可选>
 The ellipsoid. If not specified, the WGS84 ellipsoid is used.
credit Credit | string <可选>
 A credit for the data source, which is displayed on the canvas.
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