自己写的三维碰撞测试库，如三棱椎和平面的相交测试，主要就是一个函数给出全部交点（按顺时针顺序，为了好绘制交面）-Write your own library of three-dimensional collision tests, such as vertebral and Trigonobalanus plane intersection test is mainly a function given all the point of intersection (in a clockwise