用一种基于树形结构的LOD算法来显示的地形,效果很好,学以游戏编程的人可以参考一下.-using a tree structure based on the LOD algorithm of the terrain and the results very good, learn to program the game to make profits.

人体骨骼动画，BVH格式文件。 是一种树形层次结构表示的人体骨骼,Human skeletal animation, BVH format. Is a tree-like hierarchical structure of the human skeleton