Jump to content
MadMax50

vellum grains attributes

Recommended Posts

hello,

I am trying to get rigid clumping in my vellum grains simulation. I have applied a noise to the grains and mapped that to "attractionweight" and "attractionstiffness". Then I made sure to turn the  "attraction weight" in the vellum solver to 1.

I must be missing something else, but I can't seem to figure out what it is. Seems like it is ignoring my attributes I created.

I will attach my scene file for anyone that wants to look.

Thank you. 

vellum_grains_attributes_rd.hipnc

Share this post


Link to post
Share on other sites

@toadstorm Ah i see. thank you for the file. 

What would the attributes for vellum be in terms of stiffness. I am trying to art direct some clumping. Do I break the constraints like in a  RBD workflow with a sopsolver? 

appreciate the help !

Share this post


Link to post
Share on other sites

You could use the Cluster Attribute on the Vellum Configure Grain node to make the glue constraints only occur between grains that have an identical attribute value. The Cluster SOP is useful for generating these, or you can create them manually. You can break the constraints manually, or use the Detach Chance / Break Threshold options on the Vellum Configure Grain node to control how the constraints can break during the simulation.

http://www.sidefx.com/docs/houdini/dyno/vellumattributes.html

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×