I’m using 8 points of object’s aa bbox and
project them on screen. Min/max of 2d projected screen points are size of object on screen. Problem just one. Speed. I have many objects. Did you know any faster methods of determination object’s screen size? For example may-be use object’s bounding sphere ? How to use object’s bounding sphere to determination object’s screen size ?
If you don’t really need a bounding rect or a pixel count (e.g. if you just need it for LOD control), some cheap approximation based on distance and bsphere radius should do just as well.