I'm from china and I'm currently working on a project which uses bullet to deal with physics.
The problem is that I have a collection of spheres and they will collide with each other,
these sphere may also collide with the environment.
When colliding with environment,I want the sphere to have raidus R1.And R2 with each other.
I will then use a self-defined nearcallback to swallow all the sphere-sphere collisions.
I'm new to bullet and the problem is really urgent,so please!
