Jump to content

RBD follow animation softly (Soft constraints)


Recommended Posts

Hey guys!

I'm struggling a bit with a setup that's probably quite simple but I couldn't get behind it for a couple of days now. 

My shot requires me to have pieces which a character consists of (Megascan-assets scattered on a character) follow the character's animation.

This looks something like this:




Now what I've tried to far was to go about the following with some fancy orientation math in a SOP-Solver in the dopnet to get the euler-W-acceleration to target the goal-orientation, but somehow the pivot offsets made this way harder than expected.

My next approach (which I should have rolled with from the beginning) are constraints. So I'll try to have a soft constraint for each piece to a world anchor and target the rotation.

But just how exactly does rotation-constraining work with the RBD-tools? I've found very little information on this topic - only for things that are individual objects, but not 800 pieces...


I'm happy for any hint towrads a solution.


Link to comment
Share on other sites

Alright, found a great setup by good old Matt Estela.



Depicts a pretty great workflow to set this up. Got it working with pigheads in a redo-scene. I only switched out the old spring constraint relationships to bullet soft constraint relationships. They work wonderfully.

  • Like 1
Link to comment
Share on other sites

Hahaha, emphasis was on good!!! But only with age comes wisdom, no? :D

I'd be so lost without your wiki, man! I gotta visit you down under and buy you a couple of beers one day.

I'm excited for it as well, it's a 2 min full CG short with the spirit of the forest fleeing from a wildfire and taking on all shapes and forms. My colleague Justin Braun, the director, developed a Machine Learning setup that replaces Quill-strokes with Megascan-assets - it's pretty awesome.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...