Math: http://msdn.microsoft.com/zh-cn/library/4zfefwz9(v=VS.80).aspx
Graphics: http://msdn.microsoft.com/zh-cn/library/system.drawing.graphics_methods(v=VS.80).aspx
转载于:https://www.cnblogs.com/Fly-sky/archive/2010/10/26/1861278.html
相关资源：3D Math Primer for graphics and game development
