interface IHeightmapLayers in Tinman.Terrain.Heightmaps

Base interface for classes that operate on a set of heightmap layers.

interface	IHeightmapLayers	base of	HeightmapPainter
			HeightmapSample
			IBrush
			IBrushMask
			IHeightmap
			IHeightmapBuffer
			IHeightmapFormat
			IPixelLayer

Attributes

LayerMask

The mask of heightmap layers this object uses.

property	LayerMask { get }
type	HeightmapLayer
value		Bitwise combination of HeightmapLayer values.

Remarks:

These heightmap layers store actual terrain data:

• Elevation:
  The terrain elevation, measured upwards from the base geometry (usually an ellipsoid). See VerticalRange.
• Texture:
  A 64-bit ARGB color value that describes the terrain surface (e.g. surface reflectance). See Colors.
• Material:
  A 64-bit ARGB material token that describes the terrain surface (e.g. land cover). See MaterialToken.

Missing data is represented with the Coverage layer. It describes how much information is present in a stored heightmap sample. The semantics of coverage with heightmap samples is the same as premultiplied alpha with texture samples. A LayerMask without Coverage means that all samples are fully solid. If a LayerMask contains the Coverage layer but no others, the coverage values are used to represent 'holes' in the terrain (e.g. creating holes for caves, tunnels, etc.).