这是一个OpenGL的综合性实验，此实验实现彩色立方体的各个面独立绘制，菜单弹出，可以选择直线或者虚线绘制，和旋转等功能-This is an OpenGL experiments, this experiment on all sides of the color cube independent draw, the menu pops up, you can choose a straight line or a dotted line drawn, and rotation