How to ignore collisions for specific Vellum objects while also being able to use Vellum IO?

[eolophus]

I'm trying to understand how to assign colliders to objects in a vellum simulation. For example, I would like to add a collider that only grains will collide with, while the collider is ignored by other objects in the simulation.  This helpful solution shows how to accomplish this with a dopnet setup. (A screenshot of this approach is below.) However, I don't know whether it's possible to send the output of the dopnet to Vellum IO and Vellum Postprocess. Is there another way around this? Or perhaps a way to control collisions from within the vellum sop solver?

 

[Noobini]

what about this ? not needing to bring vellumio into the equation:

- run it, both grains/cloth will ignore torus

- disable wrangle3, cloth collides with torus, grains ignore torus but still collides with cloth

 

vu_graincloth.hipnc

[eolophus]

Thanks so much! That's exactly what I was looking for.