用Directx3D开发的太阳系程序，实现了飞船在地球场景和太阳系场景的自由漫游，对于D3D的基础技术是个不错的总结-Directx3D development of the solar system with applications that implement the spacecraft in the Earth scenes and the freedom to roam the solar system scene, for D3D based technology is a goo