Vodka spritzer

[simmsimaging]

We actually sculpted a series of water drops in Zbrush, and then created a displacement map out of that. A bit of photoshop for making it tileable and creating some different versions. The sculpting was time consuming, probably 2-3 days, but the end result was the best we had found so far.

The water drops are a separate mesh too. You can displace the glass surface as well, but it's not the same look - particularly because the IOR needs to be different for water. To do this one I made a copy of the outer poly's of the bottle mesh, deleted the faces that were not visible to camera, and made it 99.9% of size. Add a water material to that mesh and apply a VrayDisplace modifier to pop out the water drops. Use the 'water level' feature set at it's lowest setting (I think. 001, maybe .01 - whichever) to clip out everything but the drops. That way you get the drops starting from just inside the surface of the glass - but that works fine in Vray - you actually want the interpenetration.

That's it, that's all.
b

[walee]

Thanks a lot for the insight, and i think scultping is really the good solution in terms of realism most of the time it's the best way to go. Zbrush is such a great tool by the way, can't live without it. Brett the droplet master !

[simmsimaging]

Credit for the sculpting goes to Jim Dunk - who works with me here. He is the modeler

b

[walee]

You're right, it's always best to give the credits to the right person. So Jim is the droplet master :P

[simmsimaging]

I think that's what he has on his business card

[Bpositive]

Wow, All hail the droplet master

[exagero]

What do you get it!!! Fantastic level details!!!

[MoonDoggie]

Brett, how did you do the water droplet meshes in ZBrush? Did you scuplt them from a plane and then generate your displacement map from that? Just curious. Beautiful stuff as usual.

[simmsimaging]

Thanks guys

Colin: they were sculpted on a plane then the ZDepth was captured to a 16 bit image. That was retouched in Photoshop to make it tileable, and to create some variations/versions. I have also done it with just using dome shapes interpenetrating a plane object and messing with that, but there was just something much nicer about the more organic version Jim made in Zbrush doing it by hand.

[MoonDoggie]

Awesome, I'll try this out when I get home tonight!

[Paul Oblomov]

Any thoughts, on how to create animated version in reaflow ?

[simmsimaging]

My thoughts basically came down to not using Realflow I don't think it has the necessary tools for droplets. You could certainly do it with Pflow and Pwrapper. For animation I think that would be more than good enough, it just didn't quite have the detail of shape for stills that I was looking for. Again though - for liquid runs it works awesome. Anselm (Psychosilence) has an awesome tutorial that shows how to do it - that's what I used as a reference for my testing.

/b

[Paul Oblomov]

I tried pflow, but it doesn't look as good, as reality In realflow I tried object based emmiter, mapped with texture.... no luck. Tons of tutorials, but none of 'em cover creating this effect in realflow

[simmsimaging]

I tried finding ways in RF without any luck either. I really think Pflow can do a pretty good job in many ways, but you need to be a good Pflow guy like Anselm or Bobo to be able to get the right dynamics in the drop shapes and I just don't have that level of proficiency. There are also limitations to what you can do with Pwrapper of course.

Anyway, I'm just happy I only work in stills

[prateekvishwa]

Neat!! very nice..