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Recent Forum Posts

Blending volume shaders in redshift March 27, 2023, 3:43 p.m.

Is it possible to have a layered/blended shader for a volume using redshift? It’s easy to do this with geometry, but none of the redshift blending operators seem to work with volumes. In SOPs, Houdini chooses a primary material for the volume and ignores the others.

Undirected particle turbulence Nov. 3, 2019, 1:10 p.m.

What is the best way to apply general undirected turbulence to a particle simulation? I'm using the wind node with all directions set to zero and turbulence on. My particles keep getting caught in 0 velocity pockets. Ideally I'd like to prevent them from slowing down too much, or getting caught in tiny whirlpools. Animating the turbulence offset does not seem to help.

Using an animatable effector to create concave geometry deformations July 9, 2019, 11:20 p.m.

Hi All,

I have been using the cookie sop with an output of “keep inside A, keep outside B” to create concave cutaways in geometry “B”. I want to be able to animate the shape and location of geometry “A” but when I do it tends to cause faces to flip/break. The point IDs and numpt are effected by the boolean, which is not ideal.

I would like to achieve the same effect by using “A” to deform the surface of “B” in much the same way, but without modifying the point ID's or NUMPT of “B”.

Ive played around a bit with the magnet sop, using it to scale points. But that has only only been useful for creating dimples in the surface. I want those dimples to begin to close around the effector as it moves deeper into the surface.