Long time, I’ve got an update. I’ve been posting minor stuff only at cgtalk, figured I’d get some good c&c for my current problems around here maybe. Plus I do need to hang out here more.
I have made a basic rig, it looked alright, but the weighting was terrible to begin with. the arms pinch at the elbows, the armpits come out when the arms move up and they dive into the body when the arms went down etc. It’s hardly causing problems in the rest of the rig though.
So i redid some painting, beginning with the arms, then I added some bones to help the deformation of the elbows, shoulders, armpits and chest areas. trying out stretchy bones for that.
Shot at 2007-07-01
Shot at 2007-07-01
copied from cgtalk:
I first used target constraints to lock the “deform bones” to little bones which I parented to either the lowerarm/upperarm/shoulder/neck.
But then once you bend the arm too far the bone goes through the targeted bone, so I used stretchy instead. which is a little trickier to control I think, but results seem better so far.
I’ve painted the weights in those areas again, and the arms bend a lot better up and down and to the front and back now.
Some problems occur when I start twisting the arms though.
I’ve looked at the known rigs, like mancandy, ludwig, otto, and I tried blenrig but it is packed in rar, haven’t got an app installed yet that opens that.
It seems that ludwig doesn’t even have vertgroups for his body! including the fingers, is he using only the envelopes? wow, some precise fitting then!
mancandy has a LOT of small vertgroups on several small helper bones, but then again his arm is set up a lot more complex then mine needs to be. it’s like looking at spaggeti right now.
I know I have to rework the hands on the bones in it, but still:
both otto and ludwig have these bones which drive an action where the fingers bend, but both these actions start with the fingers bending the wrong way. Long story short, I can’t reproduce this effect. Even if I make an action with fingers bend the wrong way first and then bend them the right way, with about the same number of keyframes, when I rotate the fingercontrol bone, the fingerbone rotate like crazy, no matter what my settings.
I know there’s a number of good blender riggers out here, I’ve looked through the wiki and some other places that cover rigging, it’s not that I can’t find the info, I can’t really adapt it in this character. If anyone could give me a small example of what to do or where to look, I’d be very gratefull.
If someone wants the file to check it out/make some quick fixes for me to study, they are welcome to. I’ll upload it.