Partially penetrating smoke through collision objects

[fatboYYY]

Hey guys,

 

I'm trying to setup a collisions for my smoke, but I just can't get it to work properly. I've added thickness to it, tried to adjust the normals and couple of other things.

Any help is appreciated.

 

Cheers

reneskopf_a_smoke57.hip

[fathom]

didn't open your file, but sounds like you're describing poly geo.  to collide with smoke, i'm pretty sure you need a volume representation.  if you're using a static object in your dop net for the collision, make sure you enable volume-based collision.  then turn on the volume guide to see what volume is being constructed.  i personally prefer to create my volumes as vdb in sops, then use the volume proxy field (with volume sample as the creation type) to pull in my collision geo.

 

edit: smoke will often push thru even a completely solid volume if it's got a lot of divergence (like you're generating gas from combustion).  not really sure why.

Edited March 7, 2016 by fathom

[fatboYYY]

Volume Based Collision Detection gives me really weird results, even if I use really low division size. And from previous tutorials I have seen that using the concave geometry representation in bullet data with volume based collision turned off gives a accurate result. But in my case it doesn't, but I don't really know why.

[fathom]

how does the volume representation match your geometry?  turn on the display of the volume guide and make sure it's a good volume.  a lot of times, it's not.  this is why i build my collision shape myself with vdbs and then use the proxy volume field to just pull in my hand built geo.