folding smokesim

[tfreitag]

hi,

I have to make an ink effect, with solid looking folding plumes. Now I would like to use the idea of Pazuzu(alejandro) to enhance the folding effect of the plumes. Inside my Smokesim (DOP) I would generate an SDF from the density, generate Curvature and use this values to drive divergence field. On high curvature are it would push it inside and low curvature are I would push it outside.

My problem:

How to convert the density to an sdf field inside dops? I found sdf to fog microsolver but not the other way around.

And is this a good way to push the folding effect, with divergence field driven by curvature?

 

thansk in advance. tom.

 

[hall]

Hey Tom, check the gas analysis to extract curvature and other data types.

Btw, you could convert the density using sop solver inside dops, inside the sopsolver just put a dop import. I hope it helps.

Edited October 6, 2017 by Hickstein

[tfreitag]

thanks hickstein for your help! 

i tried to use a sop solver together with the smokesolver, but i don't  get it to work. if anybody have an advise how to setup the sop solver in conjunction with smoke solver, would be great. then i could convert the incoming density field to an sdf with vdb convert inside a sop solver per timestep? ...or should I advect the sdf field?

any advises would be great. thanks, tom

[hall]

Here's a sample for SDF representation and gas analyses to get curvature data.

Can I see the reference technique you are looking for?

 

 

curv_analyse_sdf_repr.hip

[Atom]

That is a fun one to play around with.

[tfreitag]

hickstein, thanks, thats amazing! ...the solversop setup is exactly what i need. i try to implement alejandros surface tension model to enhance the folding effect. here is the site: http://www.gridmarkets.com/alejandro-echeverry

 

thanks so far. tom.