Sticking contacts with btConvexHullShape
Posted: Mon Nov 15, 2010 10:06 pm
Hi,
I'm using a voronoi cell based shatter tool to create a large amount (1000) of stacked convex shapes with btConvexHullShape as the collision geometry. I'm finding that while fairly stable for stacking, the resulting bodies have a tendency to stick together. Only a large direct collision impulse will separate them, creating unnatural looking results.
In contrast, I've found that ODE augmented with the Bullet GJK collider behaves quite differently, with the bodies separating easily after an impulse unless otherwise constrained.
The effect is reduced if friction is set to a very low value. Does anyone know would be the likely cause of the very different results?
Cheers.
I'm using a voronoi cell based shatter tool to create a large amount (1000) of stacked convex shapes with btConvexHullShape as the collision geometry. I'm finding that while fairly stable for stacking, the resulting bodies have a tendency to stick together. Only a large direct collision impulse will separate them, creating unnatural looking results.
In contrast, I've found that ODE augmented with the Bullet GJK collider behaves quite differently, with the bodies separating easily after an impulse unless otherwise constrained.
The effect is reduced if friction is set to a very low value. Does anyone know would be the likely cause of the very different results?
Cheers.