自己改写的一个画图的小程序，拿出来跟大家交流一下，希望大家能多多指教。-Drawing their own small rewrite of a program to share out with what I hope we can exhibitions.

根据需要改写，生成三维点云数据用于模拟实验，目前包含了旋转抛物面和单位球点云的生成。-According to the need to rewrite, generating three-dimensional point cloud data is used for simulating experiment, now contains a rotating paraboloid and unit ball point cloud formation.