GIS_Terrain
Building block of the terrain model.
- Geographic coordinates of the northwest corner of the terrain chunk
- Size of the terrain chunk in minutes (currently we use 15- and 30-minute files for most New York State)
- Mesh simplification threshold. The higher value, the smaller number of triangles is created to produce an approximation of the terrain shape, but the faster rendering. (0.3 for a very precise terrain shape approximation to 1.5 for rough approximations)
- Preferred texture size in pixels. This can be used to force a wavelet decompressor to produce uncompressed textures smaller than their originals (useful for some OpenGL hardware)
string "76:15:00,43:15:00 15 0.5 512"