Possible to restore simulation with less cells? (to continue lower resolution for layout tests)

[BeneZ]

Hello,
I was trying to restore from a frame, but with lower resolution.
It seems only to continue in same resolution... or is there a way?
Would be helpful, to continue with something already existing, but to be able to make quick tests.
Thanks

[joconnell]

might be able to use resimulation for that one frame to downres it?

I've upressed before using these controls but haven't tried downressing. According to the docs if you put in a value of -1 into the amp. resolution you'll get a grid that's half res of what was put into it - https://docs.chaosgroup.com/display/...e+Resimulation

[BeneZ]

Ok thanks! I have still not used resimulation.
So i guess it would be possible to use any backup-frame, then resimulating this with -1.
I will try next day

[Svetlin.Nikolov]

Yes indeed, restoring needs the grid to be the same res, but one more idea would be to try out Load and Start - it can stretch up or down the starting state cache to your current resolution. It will start from frame 0 though, and is very likely to look weird in animation. You also need to have velocity in the cache you load, or the sim won't continue moving...

[BeneZ]

Thanks Svetlin, I was testing also „Load & start“ and didn’t really figure out how it works (and the manual only covers it very short). I expected to do it the same like „restore“.

It means it is not using the set frame range, instead using the start frame of the cached simulation? (it‘s also possible that I haven‘t velocity enabled, because I‘m currently testing only how I can shape smoke).

What means look weird „in animation“? Isn‘t it all simulation or at which point you would say something is „animation“?
Of course I am keying/animating parameters, such as body force.

[Svetlin.Nikolov]

Yeah, I mean if you have your first 20 frames in high res and then the animation continues in low res, wouldn't it be an abrupt change?

Load & start just loads a cache as an initial state and starts the simulation from the beginning. Just like pressing Start, but the simulator is not empty by default - instead it starts with data from that one cache file.