Real-Time Physics Simulation Forum

I'm experiencing some weird instability with bullet when my framerate is high. In the beginning my code looked like this and it worked great for all framerates because it would only do one simulation step every 1/60th of a second. In the event that the framerate was really high, the timeAccumulator ...

Hi, I'm trying to dynamically control the hardness/stiffness/rigidness of a btSoftBody. The desired effect: When my soft body falls onto a cube and I click a button to harden, the soft body should become stiff and retain the imprint from the cube (it should not expand back to its original shape). I ...

Thanks for the reply! I now have some really basic denting happening. My next issue is if I drop something like a cube on a dentable floor, it only detects two or three collisions (but there should be four - one for each corner on the bottom face of the cube). Is there a way to tune the bullet colli...

Hi, I am trying to simulate denting/plasticity in bullet. Here is a good reference for what I mean by denting: http://vimeo.com/20760525 at the 50-55 second mark. Here are some basic ideas that I have: 1) Treat the object as a soft body during impact and after a couple frames turn it back into a rig...

Hey, so far I have static and dynamic objects working by passing a mass value into the rigidbody constructor. However, I'm trying to set an object's mass after the rigidbody has been constructed. For example, I have a dynamic object with mass 1 that I want to become static. My goal is to be able to ...