SCTTerrainProvider

new SuperMap3D.SCTTerrainProvider(options)

A TerrainProvider that produces terrain geometry by tessellating height maps
Name Type Description
options Object Object with the following properties:
Name Type Default Description
urls String The URL array of the SCT.
proxy Object optional A proxy to use for requests. This object is expected to have a getURL function which returns the proxied URL, if needed.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid. If this parameter is not specified, the WGS84 ellipsoid is used.
credit Credit | String optional A credit for the data source, which is displayed on the canvas.
See:

Members

credit : Credit

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 SCTTerrainProvider#ready returns true.

errorEvent : Event

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

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

hasWaterMask : Boolean

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 SCTTerrainProvider#ready returns true.

ready : Boolean

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

readonlyreadyPromise : Promise.<Boolean>

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

requestVertexNormals : Boolean

获取是否需要法线。

skirtScale : Scale

获取或者设置裙边范围。

tilingScheme : GeographicTilingScheme

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

Methods

getLevelMaximumGeometricError(level) → Number

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

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.