相信对地形绘制熟悉的同学会听过曾涛，这是他编写的三维地形漫游一个程序，功能非常全面，适合科研及测试开发(I believe that the students who are familiar with the terrain rendering will listen to Zeng Tao, which is written by him in the process of 3D terrain roaming. The function is very comprehensive and suitable for scientific research and test development)