I am skinning and rigging a human character and I am struck with arm-shoulder joint area (and crotch-leg area, but I think that the solution will be similar).
I am doing skinning with vertex painting. But I cannot get it to work properly. I am able to skin it so it will look good if the arm is rotating up and down - but rotation in other axis (forward-backward) looks horrible and I cannot make it look good without braking previous deformation (during up-down rotation).
So I am curious. Is there any trick to get it work? Something like add extra bone? I found some tutorials about IK Solvers, etc., but my problem is actually the skinning.
I am sure that this is common problem in character rigging. So does any have a link to some advanced tutorial?
Anyway my model is a little more complex, here are screens: