This program demonstrates a 3d sky by placing the viewer inside a texture-mapped cube. There s a demo at http://www.coolgroups.com/skycube/. -This program demonstrates a 3d sky by placing the viewer inside a texture-mapped cube. There s a demo at h

第三人称视角的摄像机例子，在场景中移动一个球，初学者可以研究下里面的坐标变换-Examples of third-person camera view, in the scene to move a ball inside the beginner can be studied under the coordinate transformation