Cinematic Destruction Basic Concept #2 RBD Fracturing (Rigid Body Dynamics)

[@paoloricaldone6273]

Thanks !

[@bubblepins]

Thanks for watching!

[@ModelWhatYouSee]

I'm trying to have to colliding objects break part on collision. I haven't been able to find any solutions on this, though it seems like it would be easy...any help would be awesome!!

[@bubblepins]

I believe what you want is overwrite constraints within the rbd solver, that way you can manually animate the deletion of the constraints. You can add a blast node and animate which constraints you want to blast. You can use the other geometry as a selector and feed it into the 2nd input of the group node and set it to a group by geometry bound detection and then feed that group into the blast node so it dynamically deletes constraints. What you need to be careful of is when you delete the constraints that they fall apart far enough so it stays broken. You can also add a solver node to make Houdini remember the constraints broken, but that's a little more complex. I would suggest to exaggerate the original geometry, like expand the group to be blasted, that way more constraints are deleted before you feed the constraints into the 2nd input of the rbd solver (the purple connection line). Just to summarize, this is overwriting the constraints manually in SOPS. Hope that helps!

[@ModelWhatYouSee]

@@bubblepins Yep thanks! I found out it was how I was naming the piece attribute, and it was screwing up the RBD solver. All fixed. Thanks for your great videos! I learn a lot from them.