[eric nixon]

Also forgot to say the bubbles are a coating with the bsdf turned off, so not actually AGS afterall

For a close-up you might need to model the honeycomb with some mathematical fractal modelling thingy, sounds way too hard.

[tom]

AGS spheres scattered across the surface of an sss works ok for bath foam;

Also forgot to say the bubbles are a coating with the bsdf turned off, so not actually AGS afterall

Decide

[simmsimaging]

I don't think this is going to work for me anyway, unfortunately. The AGS renders much faster now, but the look just isn't right. The intersecting bubbles look like just that - it doesn't have the right sort of 'cellular' structure that bubbles have so it looks wrong.

Looks like I'm beat on this one as I don't know any way to really model that kind of thing.

Thanks for the insights on the materials though!

b

[tokiop]

Looks like I'm beat on this one as I don't know any way to really model that kind of thing.

Maybe voronoi 3d / fracture script with regularity could help for the honeycomb structure : Wings 3d example from Jotero !

[simmsimaging]

Maybe voronoi 3d / fracture script with regularity could help for the honeycomb structure : Wings 3d example from Jotero !

Looks interesting - I will look into it a bit. I'm not sure it will quite do it either though, as the pieces left over from the Voronoi fracture are not rounded out on the non-compressed sides so don't really look like bubbles do. I'm not sure if I can get around that or not, but thanks for the link - definitely worth checking into!

b

[tokiop]

Indeed, linking the inner structure with the surface bubbles looks tricky..

Do you have any reference images of the look you are after ?

btw, Eric, the bath foam is great !!

[simmsimaging]

Indeed, linking the inner structure with the surface bubbles looks tricky..

Do you have any reference images of the look you are after ?

Along these lines:

[Aniki]

Like I said, Phoenix FD or soft bodies..

http://www.youtube.com/watch?v=m5Q3sLdkwSk&sns=em

http://www.spot3d.com/phoenix20/introduction.htm

check the cellular mode on the bottom...

[eric nixon]

Tom, its definately a coating, sorry confusion

Aniki, I'm not a max user but that cellular mode doesnt appear to be able to be converted to geo, so thats the catch, perhaps you can find more info on that? I'm curious it would be great to convert it (will be heavy though) or find a programme which generates such a mesh from an inputted geometry (obj file probably).

[Hervé]

erm.. if you look at this FXguide ...

http://www.fxguide.com/fxguidetv/fxguid ... -realflow/

at the end there is an Interview of Gustavo Sanchez.. but watch it at 35:39, there is a commercial for coke.. I think it's all done with realflow.. there are bubbles and foam..

h/

[eric nixon]

I still like the voroni fracture concept, just 'optimize/weld' the fracture so thats its all one mesh again with single sided faces, and uv a bulge normal map onto those faces, then place some tiny spheres at the interesections - several ways to do that..

Havent tried this but sounds reasonable for a mid-range shot and suitably quick to do?

Herve, when I get a realflow-c4d-maxwell setup (and study reaflow too!) that sounds like the solution for animations where you want moving bubbles.. still downloading the video 328 mb ,will check it....

EDIT: cool vid, but I'm very suspicious about the camera angle, why was that necessary, almosty certainly to avoid the refraction issue with the sides of the glass and the animated fluids.

snapshot;

[Aniki]

http://www.gvu.gatech.edu/~jarek/videos/bubble.mov

http://www.gvu.gatech.edu/~jarek/papers/foam.pdf


I think there are plenty possibilities, maybe Modo Splashkit has a solution for this as well?

Are you aiming for still or animation solutions?

cheers

Aniki

[simmsimaging]

Like I said, Phoenix FD or soft bodies..

http://www.youtube.com/watch?v=m5Q3sLdkwSk&sns=em

http://www.spot3d.com/phoenix20/introduction.htm

check the cellular mode on the bottom...

Yep, I remembered. I am not sure how to do the soft bodies, and I was hoping to work in Maxwell. As well, it's not totally clear that Phoenix would do it perfectly anyway. I had a quick exchange with the programmer and he wasn't sure it would cut it for close-up either, or that was my take away. It is still probably the best bet though

Splash kit does not cover this kind of thing - but thanks for the thought.

@Hervé: I wasn't sure Realflow could generate a mesh for foam, or whether it was just for the particles, but looks like it could. I only have a RF4 license though, and the upgrade is out of the range of my wee studio

@Eric: that sounds like it might work - the weld/normal map thing. I will see if I can give that a try.

After all of the scrambling and testing it sounds like my client is thinking of dropping the bubbles/foam so I might dodge this bullet for now. Fingers are crossed

Thanks all, the help is much appreciated.
/b

[eric nixon]

Added more bubbles, and booleaned the foam so it sits just inside the tub, and improved the bubble.mxm, would have preferred them positioned a bit lower, also have some smoothing error, but this is only a test;

[Aniki]

http://www.youtube.com/watch?v=_U4qsRyPE7k

http://www.youtube.com/watch?v=eihAMrT2aqE

this seems to be the solution simulationwise;)