softbody cut

[josemendez]

I see. Thanks for the clarification.

If I simply unbind the volume softbody, I just need to re-bindskin it?

Is this a viable path?

Rebinding the entire skin is rather expensive, and it assumes that you have already regenerated the mesh topology in a way that's suitable for softbody simulation. If you already have a viable way of cutting the mesh and you don't mind it taking half a second or so (or even more for larger meshes), then it's ok.

Also note that typical hole filling algorithms (eg. ear clipping) used in mesh cutting do not generate new vertices for the mesh, they just tend new faces across the gap. This is fine for rigidbody simulation but will not be enough for proper softbody simulation unless the softbody is extremely rigid, since these faces will not be able to deform properly. You'd generally want to resample the hole first by distributing vertices across its surface, and then triangulate.