Real-Time Physics Simulation Forum

When an object with a convex hull shape is collided with, it seemingly behaves in the same way as a box would, such as sliding on the floor. Is there any way with a convex hull, or with another type of mesh shape to have the collider react as the actual shape would?

Thanks in advance

The point of a convex hull is to roughly approximate a mesh. If you are looking for more precise mesh collisions then I would consider using btGImpactMeshShape if your model is concave, or you could also use the HACD algorithm in bullet to generate a more accurate representation of your 3D model.

It is possible to provide accurate and inexpensive collision shapes of most concave meshes using a btCompoundShape with several btConvexHull subshapes.

To learn more about Bullet collision shapes you can watch this video.

erbisme4@yahoo.com wrote:The point of a convex hull is to roughly approximate a mesh. If you are looking for more precise mesh collisions then I would consider using btGImpactMeshShape if your model is concave, or you could also use the HACD algorithm in bullet to generate a more accurate representation of your 3D model.

drleviathan wrote:It is possible to provide accurate and inexpensive collision shapes of most concave meshes using a btCompoundShape with several btConvexHull subshapes.

To learn more about Bullet collision shapes you can watch this video.

Thank you for the help! I tried the different methods mentioned, and the btConvexHull shape method worked really well. Thanks