Jump to content

Post-grain sim constrained RBD animation


mhgwilliams

Recommended Posts

Hi there, if anyone could help me wrap my head around this I would be very grateful.

My setup is this:

Vellum sim with grains falling into a container. Motion is exactly what I want.

I need to then copy cubes to these points to look like ice. I'd like to have close to realistic rotation on the ice cubes as they simulate.

My thought was to run an RBD simulation on the cubes having them constrained to their positions as defined by the grain sim.

 

The problem I'm having is understanding how to create constraints on the cubes that allow them to freely rotate but maintain the grain sim position. I'm in H18.0.287, and I'm attempting to use the sops rbd solver workflow, though I could see needing to configure this with the normal dops workflow. Could anyone point me to some resources to help me understand how to build these constraints? Or maybe I could somehow get rotation without this secondary simulation? I could've sworn there was a way to get orientation from vellum grains.

 

Thanks everyone!

 

As a treat, here was an attempt at a bullet solve with a cheap buoyancy force I hacked together haha

 

shrub_010.mp4

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.

Guest
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...