模仿人的手臂的opengl3D程序，通过鼠标和键盘进行交互-imitate the arm opengl3D procedures, through mouse and keyboard interaction

OpenGL机器人，添加光照、实现胳膊的旋转和 用键盘控制机器人的上、下、左、右的旋转动画。-OpenGL procedures. Drawing a robot, add the light, to achieve the rotation of the arm and the robot using keyboard control the upper and lower