实现了一个3D的机器人行走，我觉得这段代码很好地使用了glScalef，和glRotatef，实现了如何画出一个长方形，和机器人各部位的摆动-Implementation of a 3D robot walk, I think a good use of this code glScalef, and glRotatef, realized how to draw a rectangle, and each part of the swing robot

用OPenGL写的一个外星人在宇宙的3D模型。其中有地球、太阳、外星人、可乐、秋千等。地球可以绕着太阳公转、也可以自转，另外外星人还有变形和荡秋千等动作-Use OPenGL write an alien in the 3 d model of the universe. There are the earth, the sun, aliens, coke, swing, etc. Can the earth moves around the sun, can also be rotation,