通过光线追踪的方法，将一个纯数学的模型（球体中心坐标，颜色rgb值）等等转换为一个三维的图片，而且能够模拟光照效果/柔和阴影/景深等等，且带有抗锯齿功能-Through using the method of ray tracing, the model is a purely mathematical (center of sphere coordinates, color RGB value) and converted to a 3D picture, and can simulate the effects of the light/soft shadow/depth and so on, and with the anti aliasing