I have a set of circular glasses that use eyelids within them and for the life of me I can think of a way to make them have expressions (ie blink, slant, wink, go square, etc).
Shape keys won’t work because of how vertices use straight line movement to the end point and the shrinkage during travel. I’ve tried various ways to bring them up and down but nothing has worked. They either collapse leaving gaps that can be seen through between the rims and the lids or I end up with arcs where I need them to be flat.
I really don’t want to have to animate these with multiple bones.
Any suggestions on how I can accomplish this would be appreciated.