OSG 碰撞检测之多面体求交器代码解读(PloytopeIntersector): http://www.cppblog.com/acmiyou/archive/2009/08/02/91942.html OSG LineSegmentIntersector进行碰撞检测 http://blog.youkuaiyun.com/include1224/article/details/5357741