API Reference › core-frontend› Tiles › TerrainMeshProvider

TerrainMeshProvider Class

Provides 3d meshes representing terrain for display in a Viewport. Each mesh represents the terrain within a rectangular region of the Earth associated with a MapTile. The display system drapes background map imagery onto these meshes. TerrainMeshProviders are obtained from TerrainProviders.

@note A terrain mesh provider is expected to produce terrain for all areas of the globe. If it lacks terrain data for an area of the globe, it might choose to fall back to producing smooth terrain using an EllipsoidTerrainProvider.

@see - EllipsoidTerrainProvider for an example implementation that provides smooth terrain meshes.

Extended by

Methods

Name Description
constructor(): TerrainMeshProvider    
addLogoCards(_cards: HTMLTableElement, _vp: ScreenViewport): void Add attribution logo cards for the terrain data supplied by this provider to the Viewport's logo div.  
forceTileLoad(_tile: MapTile): boolean Returns true if the specified tile should always be loaded.  
getChildHeightRange(quadId: QuadId, rectangle: MapCartoRectangle, parent: MapTile): undefined | Range1d Returns the minimum and maximum elevation of the terrain within the specified region of the Earth.  
isTileAvailable(_quadId: QuadId): boolean Return whether terrain data can be obtained for the MapTile specified by quadId.  
readMesh(args: ReadMeshArgs): Promise<undefined | RealityMeshParams> Abstract Convert the terrain data supplied by requestMeshData into a terrain mesh.  
requestMeshData(args: RequestMeshDataArgs): Promise<any> Abstract Obtain a representation of the terrain for a specific MapTile.  

Properties

Name Type Description
maxDepth Accessor Abstract ReadOnly number Returns the maximum level of detail of the terrain meshes.  
tilingScheme Accessor Abstract ReadOnly MapTilingScheme The tiling scheme used by this provider to convert between tile coordinates and geodetic coordinates.  

Defined in

Last Updated: 14 November, 2024