Real-Time Physics Simulation Forum

Why don't you ask this on the blender forums?

The center of mass is the local origin of the rigidbody. There's no "fixing" that. Just offset the object in your renderer instead of altering the origin in bullet.

I think what he means is that generally in a real time application, you don't want to use the render geometry in the physics system unless you have to. If you have an animated character with 50k verts, you don't use that geometry in the physics system. For example, in CryEngine3 by default the engin...

Can't you just reduce the friction of the ball, and possible couple that with some angular damping? Or does that not produce the desired effect?

In the Demos folder of your bullet src ... inside the solution as separate projects if you use visual studio

There's a raycast demo in the bullet samples ... AppRaytestDemo

There's also this wiki article: http://bulletphysics.org/mediawiki-1.5. ... ng_RayTest

Considering his last visit to the forum was 2 years ago, you might have to be contented with his explanation instead of his source.

I make the collision shapes by hand for each model. Since I'm just using skeletal animations, this works for me. If, for example, you were using morph animations for a blowfish to expand to 4-5 times its size, I suppose it wouldn't work very well. My method is not very efficient in terms of setup ti...

Rather than blending individual vertices of a complex collision shape (which is work that you already avoided on the CPU using hardware skinning), I use primitives and align them with the bones each frame.

Giant blue text, double post, wrong section. Pretty badass

Steering is an A.I. concept, so you won't find it in a physics library.

I would deal with this problem as 2 separate issues. One is determining if a special zone has been hit, and the other is appropriate physics. The compound shape is just getting rid of your constraints and thus your solver issues. The special kinematic trigger (which you would likely flag with btColl...

In terms of trigger zones, that's what I do, but I don't do anything exactly like what you are doing in my projects. You could also look at compound shapes, since you aren't actually using constraints except to keep bodies locked together.

Why not have the hitbox rigid body be kinematic, and just keep it in the correct position every frame?