说明：  光线跟踪，一个不利用任何3D API的程序，演示的是建立一个包含若干三维物体的对象，然后设置光照（角度等等）并对对象进行光照效果渲染，不过我个人觉得这个程序也许不应该称为1月最佳，因为速度比较慢，好像最后出来的效果还有Bug。
(Ray tracing, a 3D API does not use any program, presentation is to create a three-dimensional object that contains a number of objects, and then set light (angle, etc.) lighting effects and object rendering, but I personally feel that the procedure may not be known the best month to 1 because the more slowly, as if there turn out the Bug.)