Sign in to follow this  

Frustum/AABB Intersection

This topic is 3730 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hello to all, I am implementing an octree based frustum culling routine, and figured out that the bottle neck of the whole algorithm is the frustum/AABB intersection routine. I am currently used a raw polygon-intersection approach, that is, I consider my frustum and AABBs as polygonal objects and then calculate the intersections with a general intersection routine for convex polyhedrons made of triangles. I am pretty sure that there are much more effective algorithms out there especially exploiting the AABB nature of my the octrees. So what I am looking for is: Is there a clean fast method to intersect a frustum with a bunch of AABBs? Regards, Michele

Share this post


Link to post
Share on other sites
Yes, in fact there are routines for testing AABBs against view frustums. A great resource that really helped me is at http://www.lighthouse3d.com/opengl/viewfrustum/ (particularly, the "Testing Boxes II" section). Hope this helps.

Share this post


Link to post
Share on other sites
Yes, in fact there are routines for testing AABBs against view frustums. A great resource that really helped me is at http://www.lighthouse3d.com/opengl/viewfrustum/ (particularly, the "Testing Boxes II" section). Hope this helps.

Share this post


Link to post
Share on other sites
Thanks very much strtok for your link, looks very promising :)
Meanwhile I also found some interesting papers at http://www.ce.chalmers.se/~uffe/publications.htm:

"Optimized View Frustum Algorithms for Bounding Boxes"
http://www.ce.chalmers.se/~uffe/vfc_bbox.pdf
and

"Optimized View Frustum Culling Algorithms"
http://www.ce.chalmers.se/~uffe/vfc.pdf

Thanks again,
Mic

Share this post


Link to post
Share on other sites

This topic is 3730 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this