构建一个字符组 更改默认值，换成用户指定变量- default_params- structure, with one field for every potential property/value pair. Each field will contain the default value for that property. If no default is supplied for a given pr

用于初学者，帮助其完成3DMAX的入门虚席-For beginners, to help them complete the entry empty seats 3DMAX

this code is about octree algorithm,which is used for skipping empty voxels.I want to share with you

八叉树（Octree）的定义是：若不为空树的话，树中任一节点的子节点恰好只会有八个，或零个，也就是子节点不会有0与8以外的数目。-Definition octree (Octree) is: If the tree is empty, then any tree node s children will have exactly eight, or zero, that is, the number of child nodes 0 and 8 will not have outside.