Real-Time Physics Simulation Forum

In Blender, at least, I think there are options for using local coordinates rather than world ones. And, are you sure you're not confusing rotation (changing the object's orientation) with rotation velocity? The first responder was correct that an object can have only one axis of rotation. Why would...

I realize this is coming 8 months or so after the posted question, but FWIW, do you have the collision bounds set to the same shape as your spinning object?

Nor am I able to get rigid body masses to behave properly. For example, I have a blender program with two mesh cylinders moving toward each other, each spinning along its long axis (like a rolling pencil), and when they collide, rather than recoiling, they move around each other and continue on thei...

I'm getting more comfortable working in Blender. Is using its bullet physics engine in any way inferior to using bullet physics in a stand-alone way, computationally or accuracy-wise?

Thanks, Karrok and dphil (once again). I'm learning how little I know. It seems I'll either have to buy Visual Studio (I can get an academic version for $129) or use Blender. (The only programming language I know is FORTRAN, so it seems there'll be a steep learning curve for me no matter what.)

Thanks, Dr. Shepherd and dphil. I downloaded Bullet 2.79, but when I unzipped it, I couldn't find (or recognize) an executable file. So, I'm too ignorant to even get a demo running. I gather it's more involved than just a simple click. I do have a pdf of the manual, but haven't found step-by-step in...

Thanks! I'll check it out.

1) Does Bullet Physics do stand-alone 3-D rigid body dynamics simulations, or must I use something like Blender, with Bullet Physics as a plug-in? 2) What's the easiest way to model a thousand or so identical 3D rigid bodies that undergo simple collision and recoil? (Blender has way more capability ...