Control vellum active area in Houdini | FREE TUTORIAL

Lets cover how to control what areas of a geometry are affected by vellum. I will show you how to use attributes to control what areas receive vellum forces and what areas of the geometry remain either intact or partially activated.
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[@massimobaita7178]

Thank You very much!

[@rewis3d]

This would be great for animating the sphere, thanks very much.

[@umair2013]

thanks man !

[@RMAFIRE]

For sure!!

[@underberg9124]

Great Tip, thanks man! But I think the blurred mass attribute does not really work, although its float values, the solver seems to just pick up everything that's not 0 and treats it as it would have a value of one. Or am I missing something? You can however control areas via scaling stiffness by a painted attribute which can be color as well, so almost same setup.

[@rikardo2041]

I will give it a try but can u do the same with att paint? like painting areas.

[@RMAFIRE]

Its the same yes. Transfering color is the same as painting. Give it a shot

[@lucasschafer8323]

Hi man ! Thanks for the tutorial.
Is there a way to animate this gradient ?
I tried using the distance threshold in the attribute transfer but it seems like the vellum solver is only picking up the attribute on the first frame.

[@Mati_Motion]

im not shure, i have same problem but probably we should use vellum solver in sop not in dop

[@Tyler-zb6ec]

If you want to animate this, youre better off using vellum pin to target. Outside your vellum solver just set what you want to initially be still, then inside vellum solver you can use a constraint property to animate. For me, Ive found active, stopped, mass attributes to be most useful working with vellum grains not cloth