How can I reverse a rigid body/cloth simulation?

[Victrel]

I’m using an animated sphere (rigid body) method to crumple a piece of paper (cloth object) by having the sphere get smaller over time to affect the paper. However, what I actually need is an ‘uncrumple’ effect. Since reversing the keyframes to make the sphere get larger didn’t uncrumple my paper, I tried exporting the simulation as mdd data, importing those keyframes back in, and then hitting ‘S’ and -1 on the mdd keyframes to see if I could reverse the animation that way. It did not work. I’m a bit stuck here. How can I get the paper to uncrumple?

Thank you

[oo_1942 (Kim)]

There is a function to flip keyframes.

[Blender_Fun1 (Blender.Fun)]

If you export your cloth simulation to alembic, you can check “override” frame and then add a driver like this:

Instead of “100” you have to put your end frame.

[Victrel]

Thank you so much!!!