一个采用C++，python，C#等语言实现的3D图形编程。-Crystal Space is an Open Source 3D SDK for Unix, Windows, MacOS/X. It renders with OpenGL or software and features curved surfaces, volumetric fog, dynamic colored lighting, terrain engine, LOD, procedural textures, por

中国地形数据，方便ArcGIS编辑使用，也可以用作二次开发，供大家学习查询参考。(Chinese terrain data, convenient ArcGIS editing use, can also be used as the two development, for everyone to learn the reference.)

Generating terrain terrain data program and descr iption