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bad gimbal locking on relations>dampening constraint
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  • abedford
  • Posted: 30 September 2008 07:54 PM
  • Total Posts: 21
  • Joined: 11 February 2007 11:31 PM

Hi all. Okay ive made this female sorceress character with long hair braids. she kinda floats so i wanted the hair to have a nice floating effect, and to save me time i used the relations contraint and placed a dampening constraint on each of the bones in the chain. It seems theres some crazy gimbal locking and funky stuff happening when i try and animate her hair bones, not apparant when the contraint is de-activated. Its unusable.

Is this is a bug, or does anyone know a solution?

(Ive tried placing degrees of freedon on the bones, but this only results in some really bad snapping)…

Cheers.



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  • Brekel
  • Posted: 01 October 2008 01:20 PM

When you’re damping rotation values make sure you’re using the dampers from the Rotation section, as the ones from the Number or Vector sections could potentially cause gimbal locking problems.

Also make sure you’ve got your joints aligned cleanly so one axis is nicely oriented along the bone pointing to the child joint..
Playing around with the rotation order can also help you out sometimes depending on which axis goes along the bone and what the motions are.

Hope that helps,



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Thx a lot !
It’s very helpfull.

Clem



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