When i deform it, this is the result:

enter image description here

I've tried with shape keys to "fix" it, but it doesn't solve anything (or maybe im just a noob).

I believe that is because the topology of the character is not good, maybe.

The point is that i want something like this enter image description here

So, a good topology will solve the thing or... there's something more i should do for a good deformation of the shoulders (and any joint in general)?

  • $\begingroup$ yes your topology seems bad and uselessly complicated, could you please share your file? $\endgroup$ – moonboots Aug 25 '19 at 16:07
  • $\begingroup$ yes as I say I think your topology is bad and uselessly complicated, but the character is very nice, so you should consider retopologize it completely, it should not be too complicated, but it would be hard to sum it up here $\endgroup$ – moonboots Aug 26 '19 at 5:49
  • $\begingroup$ So... if i retopologize it and achieve the "correct" topology, my problem will be gone and the deformation will be like in the Gif? $\endgroup$ – J. J. Aug 26 '19 at 13:24
  • 1
    $\begingroup$ The gif does the movement utilizing the collar bone and chest+pyramid muscles, the actual upper arms angle is a lot less extreme than in your example. The deltoid won't even deform to 90° in reality. $\endgroup$ – Leander Dec 21 '19 at 11:03

You can go with bad topology, IMO. I’ve answered a similar problem here: Realistic Rigging with real skeleton? Basically, you need a shape key for every pose of the arm. Then blend between 2 shape keys, other then the Basis.

If you have questions, I’d be glad to answer them.


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