TiandituTerrainProvider

new Cesium.TiandituTerrainProvider(options)
ZYWebGL/Scene/TiandituTerrainProvider.js 70

天地图三维地形提供服务类。
Name Type Description
options Object
Name Type Default Description
url String "https://t{s}.tianditu.gov.cn/mapservice/swdx?x={x}&y={y}&l={z}&tk={token}" optional
subdomains Array.<String> | String | undefined ["0", "1", "2", "3", "4", "5", "6", "7"] optional
token String
topLevel Number 5 optional
bottomLevel Number 25 optional
customTags Object | undefined optional
dataType String TiandituTerrainProvider.INT optional TiandituTerrainProvider.INT|TiandituTerrainProvider.FLOAT
credit String | Credit optional
Examples:
viewer.terrainProvider = new Cesium.TiandituTerrainProvider({
   token : sampleData.token.tianditu,
 });
const alternateTokens = [
    "1234567890123456789012",
    "3456789012345678901234",
    "5678901234567890123456",
    ];
 viewer.terrainProvider = new Cesium.TiandituTerrainProvider({
   token : sampleData.token.tianditu,
   customTags:{
     token:function(terrainProvider,x,y,level) {
       return alternateTokens[(x + y + level) % alternateTokens.length];
     }
   }
 });

Members

credit : Credit
ZYWebGL/Scene/TiandituTerrainProvider.js 160

Gets the credit to display when this terrain provider is active. Typically this is used to credit the source of the terrain. This function should not be called before TiandituTerrainProvider#ready returns true.

errorEvent : Event
ZYWebGL/Scene/TiandituTerrainProvider.js 148

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.

hasVertexNormals : Boolean
ZYWebGL/Scene/TiandituTerrainProvider.js 227

Gets a value indicating whether or not the requested tiles include vertex normals. This function should not be called before TiandituTerrainProvider#ready returns true.

hasWaterMask : Boolean
ZYWebGL/Scene/TiandituTerrainProvider.js 215

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. This function should not be called before TiandituTerrainProvider#ready returns true.

ready : Boolean
ZYWebGL/Scene/TiandituTerrainProvider.js 189

Gets a value indicating whether or not the provider is ready for use.

readonly readyPromise : Promise.<Boolean>
ZYWebGL/Scene/TiandituTerrainProvider.js 201

Gets a promise that resolves to true when the provider is ready for use.

tilingScheme : GeographicTilingScheme
ZYWebGL/Scene/TiandituTerrainProvider.js 172

Gets the tiling scheme used by this provider. This function should not be called before TiandituTerrainProvider#ready returns true.

Methods

getLevelMaximumGeometricError(level) → Number
ZYWebGL/Scene/TiandituTerrainProvider.js 344

Gets the maximum geometric error allowed in a tile at a given level.
Name Type Description
level Number The tile level for which to get the maximum geometric error.
Returns:
The maximum geometric error.

getTileDataAvailable(x, y, level) → Boolean
ZYWebGL/Scene/TiandituTerrainProvider.js 363

Determines whether data for a tile is available to be loaded.
Name Type Description
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.
Returns:
Undefined if not supported, otherwise true or false.

requestTileGeometry(x, y, level, throttleRequests) → HeightmapTerrainData|undefined|Promise.<(HeightmapTerrainData|undefined)>
ZYWebGL/Scene/TiandituTerrainProvider.js 241

Name Type Description
x
y
level
throttleRequests
Returns:
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