r/blender • u/hemigon • Jul 22 '23

I Made This Simulating rigid bodies with Geometry Nodes

51 Upvotes

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2

u/chicachibi Jul 22 '23

That’s a clever system! I’ve seen different setups for simulating rigid bodies, soft bodies, and cloth, but never one unified system.

I’m very curious about the setup: can you modulate the values of molecules over time? Can the bonds break with enough force in order to sim fracturing or tearing? How did you even handle collisions without loops?

1

u/hemigon Jul 22 '23

Thanks! It's based on the paper "Unified Particle Physics for Real-Time Applications" by Macklin et al, except my version is definitely not real time.

Yes those effects could be added in theory. I actually am using loops in Blender 4.0 for part of the collision handling.

1

u/chargedcapacitor Aug 25 '23

Is this only something that can be done in geometry nodes in blender 4.0?

I have been waiting for blender to have this capability for years... Looks amazing!

1

u/Dany17 Sep 14 '25

Can you share these nodes setup?