OpenGL 3D绘图 先利用OpenGL的3D绘图功能绘制一个3D茶壶模型，然后再添加鼠标响应事件，使得所绘制的图形能够任意调整位置和方位-OpenGL 3D graphics before using the OpenGL 3D graphics functions to draw a 3D teapot model, and then add the mouse response to the incident, drawn graphics can arbitrarily adjus