How to make the sim slow motion and look the same?

[victorwol]

Hi! I have a simulation that I like and I want it to happen in slow motion, but when I lower the scale time to let's say .1 the result is absolutely different. If my steps per frame were 10 at regular speed, do I have to reduce to 1 step per frame of the speed scale is .1?

Thanks.

[Svetlin.Nikolov]

Hello,

Indeed, the time scale changes the simulation quit a lot. Reducing the SPF is correct, but there still might be differences.

Depending on your simulation type - if it's a fire/smoke sim, the right way is to use Time Bend Resimulation. If it's a liquid sim with the FLIP solver, this is yet to be implemented there.

[Ivaylo Katev]

the timescale change keeps the sim only if the spf is changed with the same ratio, that is impossible if the original simulation is made with spf=1.
in this case you have two options
- resimulation with retiming, that is not implemented yet in the flip
- slow down the playback.
in general, the first method is better, the second one is applicable in rare cases.