Random jitter showing up in parent constraints.

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Old 06 June 2013   #1
Random jitter showing up in parent constraints.

For rigging I'm using mainly parent constraints to drive the skeleton. It's a method I've been using for awhile. I've actually ran into this issue in the past and I don't recall what caused it and I'm wondering if anyone else has came across it. An example... I'm using a nurbs curve for the jaw controller, that curve has a parent constraint with maintain offset option on linked to the jaw bone to drive it. When I rotate the head if follows just fine but every once and awhile the jaw joint seems to rotate at random. The nurbs curve control has no rotations, nothing is being passed down the constraint to the jaw joint but the rotation values for the jaw have incoming values. The only inputs are from the constraint / nurbs curve controller which has no key frames and is 0,0,0 across the board. Any ideas?
 
Old 06 June 2013   #2
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