VC7.0+DirectX9.0C写的一个月亮太阳和地球的旋转，太阳在中心自转，地球围着太阳转并且自转，月亮围着地球和太阳转。是一个学习矩阵的例子。因为减少文件大小，把贴图和贴图代码删掉了，可以正常编译，没有贴图-VC7.0+ DirectX9.0C write a moon the sun and the Earth s rotation, the sun in the center rotation, the Earth s rotation around the sun and the moon around the earth and the sun. Matrix is a learning example. Because the reduction in file size, the texture mapping code and deleted, can be a normal compile, there is no mapping