Objects within Convex / Frustum
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Lf3THn4D
- Posts: 11
- Joined: Tue Mar 11, 2008 4:14 am
Objects within Convex / Frustum
Hi, I'm working on an editor and need a way to do box selection. However I can't seem to figure how to get objects within a convex mesh from bullet. All I find is the convex sweep API which isn't very helpful for this case. Is there a way to do Convex/Frustum intersection test in bullet?
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Erwin Coumans
- Site Admin
- Posts: 4221
- Joined: Sun Jun 26, 2005 6:43 pm
- Location: California, USA
Re: Objects within Convex / Frustum
Yes, the btDbvtBroadphase supports view frustum culling to get all bounding boxes overlapping a frustum. Then you can perform further tests on those results.
See Extras/CDTestBenchmark for an example. It gives graphical feedback for view frustum and occlusion culling.
Hope this helps,
Erwin
See Extras/CDTestBenchmark for an example. It gives graphical feedback for view frustum and occlusion culling.
Hope this helps,
Erwin
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Lf3THn4D
- Posts: 11
- Joined: Tue Mar 11, 2008 4:14 am
Re: Objects within Convex / Frustum
Hmmm.. ok. thanks. 
I suppose after that for polygonal test i will have to test for each objects with the collision algorithms found in CollisionDispatch dir?
[edit]
Maybe it has been asked before but I cant seem to find the answer. But how do I actually do perfect intersection test between two objects outside of the physics system? The collision algorithm stuffs seems to be pretty tied up with the collision respond system?
[/edit]
I suppose after that for polygonal test i will have to test for each objects with the collision algorithms found in CollisionDispatch dir?[edit]
Maybe it has been asked before but I cant seem to find the answer. But how do I actually do perfect intersection test between two objects outside of the physics system? The collision algorithm stuffs seems to be pretty tied up with the collision respond system?
[/edit]