Geometry and Physics of Wrinkling (2003) [pdf]

Painters and sculptors have been studying wrinkling for a long time, and are a useful reference.

Cf. Phidias's wet drapery, and a short survey here -https://illustrationart.blogspot.com/2006/09/folds-i-love.ht...

L. Mahadevan is, no exaggeration, a towering genius of this age and an absolutely lovely human. You could post one of his papers every week and I wouldn't be upset about it.

This + shaders + expanding/deexpanding UIs like folding in Xcode...