wetMap particle age

[gregvfx]

whatever I output, the cache file content is never showing me that the wetMap is storing the Age, is it a missing information or there is something I am missing?
How do you make the nice wetting disappear with time?

Resimultation is quite obscure to me, the foam seems to have very different behaviour, that is: not appearing anymore... having to resimulate everything take a very close amount of time so again there must be something I do wrong...

On that point, are you using computer from the future on your demo movie? Everything seems to run near real time, on my side with a two years old CPU it is closer to 10, 20 times slower...

[gregvfx]

if I understand correctly, it is the size and not the age that I should consider...

[gregvfx]

new problem, if I render twice the same image, VRay crashes...

[georgi.zhekov]

Hello,

For the wetmap to disappear you need to reduce the drying time - try like 0.2 and it should work. You don't need to export age for this to work.

Resimulation generally won't speed up the simulation. What it allows you to do is to keep your base simulation and change the complimentary particles (foam,splash, mist).

The videos are sped up Nobody would want to sit a few minutes to see the final result.

As for the crash - can you give me more details? Is is reproducible with any scene or with a particular one?

What version of V-Ray are you using? Can you share the scene that is problematic?

Thank you,

[gregvfx]

ok I get that I can use the size for the wet map, ut how do I control the speed of disappearance? there is no way to remap that after it has been simulated? how to apply a curve on it.
I thought I could use the particle age to remap the animation of the power...

[Ivaylo Katev]

if I understand correctly, it is the size and not the age that I should consider...

yes, exactly, the size is the one that is changed with the age, it's more convenient for rendering

having to resimulate everything take a very close amount of time so again there must be something I do wrong...

the resimulation takes advantage only if the most of the time is spent to simulate the water, that is not true in many cases. you can check it just disabling the foam, if the simulation accelerates significantly, the foam is the bottle neck and the resimulation is pointless

the usual reason for different behavior is spf>1, the resimulation has no info for the intermediate steps and extrapolates the saved state, that is not the same as when the content is actual.

[gregvfx]

I think the crash is due to network problems... our server keeps disconnecting, probably when Vray is trying to read the cache... when rendering locally it doesnt crash... for now.
But without DR it is taking forever...

[gregvfx]

https://www.dropbox.com/s/cbcje47q24...10.02.zip?dl=0
Can't Render this, seems like it is rendering one frame but then crashes, the number of trials of BB won't be enough to have this rendered in time I guess...

[georgi.zhekov]

I managed to reproduce it. Thanks for the scene. We'll look into it.