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Weird arm and leg behaviors with IK and hinged rigging

Explorer ,
Jan 10, 2024 Jan 10, 2024

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Hey there -

I'm working on two characters with the artwork done in Illustrator and I'm trying to rig the arms with hinges for the upper arms and forearms.  It's hard to get them to appear natural when they reach up.  Also, they tend to start "jittering" by themselves in record mode.  The legs are looking a litte funky with how the mesh distorts around the feet as well. Could someone take a look at the puppets and offer any advice on how to improve them?

 

p.s. is it OK to post my .puppet file?

 

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Rigging

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Community Expert ,
Jan 10, 2024 Jan 10, 2024

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This forum cannot handle .puppet files. Users share them by uploading them to a file sharing service like Drop Box or Google Drive and then posting the link here. 

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Explorer ,
Jan 10, 2024 Jan 10, 2024

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OK, thanks, will try to get them hosted on Google Drive and post the link. 

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Explorer ,
Jan 11, 2024 Jan 11, 2024

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OK, here are the Google Drive links to the two puppets I'm having rigging issues with:

https://drive.google.com/file/d/1RBEwY2NuwDhud6qyHGnVriGxKcNe0Oaq/view?usp=sharing

https://drive.google.com/file/d/18bJJV9sC9PCYK9elMueOHx0j2OKFGgug/view?usp=sharing

Any suggestions for getting them to move less wonky are appreciated!

 

 

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Explorer ,
Jan 16, 2024 Jan 16, 2024

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If any CA gurus can look at my puppets and let me know how to improve their arm/leg rigging/IK, I'd appreciate it, they both move in some pretty unnatural ways at the moment. I have tried both hinge and weld, the artwork does have both upper and lower parts to the limbs but I'm not sure it makes much of a difference with the attach style. 

 

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Community Expert ,
Jan 17, 2024 Jan 17, 2024

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Hi Mark, I had a chance to briefly look at one of the puppets and the thing that struck me was that you had the lower arms marked independent of the upper arms. Usually, they are marked dependent and the rigging for the entire arm goes in the arm root layer. I do not know if this was necessitated by the problems you were having or not. If not, please try making the lower arm dependent and rig the entire arm together.

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Explorer ,
Jan 17, 2024 Jan 17, 2024

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Hey - Thanks for taking a look.  So yeah, originally I had them both rigged the traditional way as you describe with the lower arm not independent, but things weren't looking exactly right, and the original artwork was already built out in a way that supported hinged joint heirarchy with both upper and lower limb layers so I decided to try out the method currently in these puppets. This was inspired by something Dave Werner demonstrated in his "Your Character Animator Questions Answered!" vid on YouTube here:

https://youtu.be/uPf-SwSoATw?si=PYggRiqpE3vGLy1Z&t=896

 

I think I'm going to try scrapping this and going back to traditional rigging and see if I can get it working more to my liking. I'm not sure the hinged forearm is adding much anyway. 

 

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Community Expert ,
Jan 17, 2024 Jan 17, 2024

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You can keep the hinge and just add the rigging to see if that works.

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