Houdini Stuff

float dist = xyzdist(1,@P); float distremap = fit(dist,ch("near"),ch("far"),0,1); f@density *= distremap; This gi...

based on this vid's ideas... https://www.youtube.com/watch?v=MWJ0E1Rdoiw As an example case: You have a grid space with some cylinder...

Bring in your VDB however you need to. Plug it into a VolumeVOP and create an addpoint node. Plug P into the ptvalue input. Next create a...

This can be done with a point wrangle, but for those that prefer VOPs... create a point VOP, connect the geometry you wish to test into th...

It's possible to make a piece of geometry, pump it through a PointVOP and give it some velocity, using constants, curl noise or whatever...