opengl 1.0编写的一段小动画，没有添加控制系统，简单线条和高质量的卡通渲染，如果有心可以在本引擎上自行改进和添加功能。-opengl 1.0 written a small animation, do not add the control system, simple lines and high-quality cartoon rendering, if determined to improve and add functionality in the engine itself.