用OpengGL实现一个简单的房间模型的绘制，可以通过按键控制观察视角，由于刚学，OpenGL的高级技巧如纹理，光照还没有用到，仅供初学者参考-With OpengGL achieve a simple model of the drawing room, viewing angle can be controlled by buttons, because just learning, OpenGL s advanced techniques such as texture, light also did not use, for beginners reference