实现了一个简单而经典的3D游戏，在屏幕上绘制一个三维物体的动态画面-achieve a simple and classic 3D games, drawing on the screen in a three-dimensional picture of the dynamic objects

工作于android上的三维物理引擎，也是学习游戏开发的宝贵资料-this is a 3D physical engine working on android