这是基于《OpenGL编程指南》原书前两章的一个示例程序。实现图形的旋转变换。可能部分C语言编译软件需要添加GL相应的头文件和.dll文件-This is based on the OpenGL programming guide "original book the first two chapters of a example program. Realization of rotation transformation of graphics. May in part C compiler