【文件属性】：
文件名称：Frustum Cull ppt
文件大小：478KB
文件格式：PPT
更新时间：2012-12-14 09:40:50
Frustum Cull
the volume of space that includes everything visible from a given viewpoint
defined by six planes arranged in the shape of a pyramid with the top chopped off
If a point is inside this volume then it's in the frustum and it's visible, and vice versa