Any tip to do a liquid character.

[jstrob]

Hi, I wonder if someone has any tips about how to get a cool looking liquid character with PhoenixFD.

Like this kind of stuff:
https://dl.dropboxusercontent.com/u/...aracterRef.mp4


I am now trying to use some spheres emiting in surface force mode with a PHXTurbulence just to try to get some nice looking splashes moving around. And I'm trying to understand how to control the look of the splash. I want it to be more like liquid chocolate instead of water.

here is my moving splash test so far:

[Ivaylo Katev]

to make the behavior more "chocolate", you have to enable the surface tension and perhaps to add some viscosity.
i think many of the characters in the movie are just sources rendered with the same material as the liquid, but some of them look really shaped liquids.
our way to give shape of the liquid is to use the body force helper, it's very easy when you need morphing from one shape to another, but animated object is much harder.
the main problem is how to control the liquid amount, when the object moves, you lose part of the liquid, and you have to compensate it, the character must be a source. but of you add more liquid than needed it covers the character with thick layer and the shape is lost, you have to make many sims to adjust it. you can try with inject mode or solid mode, brush have no chance because unlike the old core, the brush here has no strength

[jstrob]

Ok thanks. I think the best would be to use a geo with a chocolate shader and blend it with a sim via frost and the emiter should emit with a kind of inverted dust map so the geo emit only from parts that are facing the ground and maybe mix that inverted dust map with a noise to make some liquid emit not too uniformly.

[oophus]

Wouldnt you just have a water/chocolate shader for the model it self, and do 5-6 sims with its renders (with the same shader) to layer on top of the main render? Not to loose control over its silhouette?

[jstrob]

Yes I may need to do many small sims instead of just a big one to have more control. An then try to blend them all with Frost.

[jstrob]

I am wondering if there is a way with v-ray to create a kind of procedural inverted dust map. There is a render surface map dust map in max but it works only with the -z axis and we can't use it as a map to apply it for example to a animated character and see it update with animation.

What I would like to do is use an animated character to emit fluid with PhoenixFD and use a +z dust map as the emiter and I want the map to change with the character animation so the liquid is only emitting from the polygons facing the ground via that map.

[jstrob]

Thanks to Super GNU who wrote to me in private message to tell me that a falloff map in toeard/away mode with world z axis is doing exactly that!

[jstrob]

Finally it seems like phoenix can't read the falloff map correctly. It just ignores it for the emission.

[jstrob]

I tried with the bercon gradient and same result. Phoenix can't read the falloff.

I will try to bake the map...

[Ivaylo Katev]

the fallof map produces different color depending on the camera ray angle, that is meaningless in context of simulation.
we will try to provide some solution, perhaps we have to extend the map sampling for this

[Svetlin.Nikolov]

In Phoenix for Maya there are the "discharge modifiers", which would do the job for you.
We have to bring them over from Maya to Max, which will be a matter of weeks.
Please check if this looks like the thing you need: http://docs.chaosgroup.com/display/P...hargeModifiers

[jstrob]

The camera angle is not having any effect cause I use the toward/away mode witht the Z axis.

The discharge modifier looks perfect for this indeed!

[Svetlin.Nikolov]

Alrighty, we'll be on discharge modifiers with a higher priority, it's about time they get into max as well.

[jstrob]

Thanks Svetlin that would be awesome!

[jstrob]

Just a small test of a man emitting liquid. I used a noise map mixed with a painted map to emit only from certain points.