android系统中的图标三维旋转效果的源码。采用2D的方式，非三维如OPENGL引擎制作。-android icon in the system three-dimensional spin source. 2D approach using non-dimensional, such as OPENGL engine production.

牛顿摆的模拟，综合使用Learner3d三维图形渲染引擎和Eureka三维物理引擎-this is a android app about Newton s cradle,which uses the 3D graphic rendering engine and physics engine

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