Limitations without blendshapes

[archanex]

What? This post doesn't make much sense taken out of context

[d-brooks]

I think the guy's trying to say that you're limited to the arcs that the joints can make when rotated eg. the jaw opening and closing. This isn't true though, you can translate a joint in x, y and z as well.

[designingpatrick]

Let's consider the elbow; one axis of rotation. So when we skin this area, the verts will only deform along the same axis of the joint. But we know that fat and muscle bulge, right? So a bulge would demand the deformation of vertices in all directions.

So the question is; "Have skinning methods been established or explored which produce deformation on multiple axes through single axis joint rotation?"

[labbejason]

Not very sure what you're asking about. You can just use a stretchy bone, or morphs to do stuff like buldges for a bicep.

[designingpatrick]

Yeah, I understand that blendshapes/morphs are probably the best way to go about achieving the results. I posted to see if other people have found techniques to acheive these results without blendshapes/morphs. That is not to imply that I have any problems with blendhspapes. I was talking with Steven Stahlberg about rigging in general, and we agreed that deformation could only occur on a single axis when skinning geometry. Or to specify, that deformation could only occur on the axis of rotation that the joint drives it.

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