opengl读取obj文件，并且实现其旋转，更改纹理、移动、单独操作等等功能-opengl read obj file and achieve its rotation, change the texture, movement, a separate operation, etc. functions

obj文件解析出来的深度图和纹理图，可以用于openGL的纹理贴图处理-obj file parsing out the depth map and texture map that can be used for texture mapping processing openGL