利用VC++ 6.0源代码与OPENGL配合,完成了stl文件的三维实体显示,网格图显示,旋转,放大,移动,并可将各个实体进行组合实现组图文件.-Using vc++ 6.0 source code with OPENGL, completed the STL file of the three-dimensional entity, according to the grid, according to rotate, zoom, move, and each entity can be co