1,用经线和纬线画出一个三维球体,经线用不同的颜色表示,用帧交换技术实现球体的转动

2,在球体外部画1-3个小球,实现大球转动的同时,小球绕大球转及速度交互可调

3,考虑设计通用程序,实现小球的个数大小旋转的轨迹-one with warp and weft, paint a three-dimensional sphere, warp with different colors, Frame switching technology used to achieve the rotating ball two, ball in the external painting 1-3 small ball, and make major rotation of the ball, Small ball big balls turn around and adjustable speed interactive 3, the design of common procedures, the number of small balls the size of the rotating track