Search found 4 matches

by monty_hall
Wed Apr 13, 2016 3:18 pm
Forum: General Bullet Physics Support and Feedback
Topic: Arbitrary Mesh - how to create collision shape?
Replies: 4
Views: 14056

Re: Arbitrary Mesh - how to create collision shape?

Do you know where I can find ConvexDecompositionDemo.cpp? I see it here "https://bullet.googlecode.com/svn/trunk/Demos/ConvexDecompositionDemo/ConvexDecompositionDemo.cpp" But I cannot seem to find it in my git repo in "origin/master". Further it would appear that the web page is...
by monty_hall
Tue Apr 12, 2016 10:48 pm
Forum: General Bullet Physics Support and Feedback
Topic: Arbitrary Mesh - how to create collision shape?
Replies: 4
Views: 14056

Arbitrary Mesh - how to create collision shape?

Suppose I have some closed blob mesh (non selft intersecting and possibly non convex) that I created in blender. How do I create a collision shape for it using the *exact* triangles that make it up? btGImpactShape?

Thanks,

Monty
by monty_hall
Thu Feb 25, 2016 1:55 am
Forum: General Bullet Physics Support and Feedback
Topic: Is rayTest thread safe?
Replies: 9
Views: 20996

Is rayTest thread safe?

The signature is const, so I would think that it is thread safe. virtual void btCollisionWorld::rayTest(const btVector3& rayFromWorld, const btVector3& rayToWorld, RayResultCallback& resultCallback) const; Please advise, because I 'm getting strange behavior when I run it multithreaded. ...
by monty_hall
Tue Feb 23, 2016 11:05 pm
Forum: General Bullet Physics Support and Feedback
Topic: Ray Tracing for LIDAR. How does bullet ray test work.
Replies: 2
Views: 5939

Ray Tracing for LIDAR. How does bullet ray test work.

When I ray test 26k times per frame, my frame rate drops from 60fps to 27fps. My question is how does rayTest work? Is it hardware accelerated? What data structures are used? BVH/kd-tree? I still need to size up how many rayTests per frame need to be done (26k may be overkill). Still, some info on i...