Function activateTerrain

activateTerrain(
    map: NativeMap | null,
    config: TerrainConfig,
    basemapKey: string,
): void
Activates 3D terrain rendering for a given basemap config.
- Adds a raster-dem source named terrain-dem (if not already present).
- Calls map.setTerrain() with the configured source and exaggeration.
- Applies the configured pitch and bearing via map.easeTo().
Parameters
- map: NativeMap | null
  The native maplibregl.Map instance.
- config: TerrainConfig
  The terrain configuration from the basemap definition.
- basemapKey: string
  The key of the basemap this terrain config belongs to.
Returns void
- Defined in src/kernel/basemaps/terrain.ts:114