Scrunching Up Sleeves with Shape Keys

Hello!

I’m working on a short animation sequence where one of my characters pushes up the sleeves of her shirt. Initially, I was considering using a cloth sim with a collider on her arm to simulate her pushing up the cloth, but I wanted to see if anyone has tackled a similar problem using sculpt shape keys. I’ve had issues manipulating cloth realistically using sculpt tools, and I want to make it seem as if the cloth is piling up on itself, similarly to this reference picture:

wrinkleHelp

Any advice would be appreciated, and I’d love to hear other approaches to moving cloth without extreme deformations!

Thanks!

Have you tried the cloth brushes in sculpt mode?

Hey Joseph!

I have, but I haven’t found the correct settings to achieve what I’m looking for. I’d tried to use a Cloth brush with the Sim Area set to Global and the Force Falloff to plane, and while that seems to shuffle the sleeve up on the arm, it doesn’t collapse the cloth as intended. I might be able to achieve a similar effect with a bunch of proportional edit transforms, but I was hoping to find something that could retain more cloth-like folds.

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How about using a cloth sim and apply that as a shapekey?

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That was my original plan, but I wanted to see if anyone had any luck sculpting/editing the cloth without using a cloth simulation. I’ve had mixed results with simulation-based features, and I wanted to have a bit more control over the height and folds, of the cloth.

I’ve made some crease shapekeys before, just using sculpt mode. That was just for the inner parts of elbows and knees, though. Didn’t need too much geometry. Just used + and - bump brush, and varied the radius a bit. The amount of geometry is determined by how creased you want the sleeves to be as they’re scrunched up, I guess.

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A combination of sculpt and cloth sim maybe.