View Full Version : (IK?) Help?

11 November 2008, 12:25 PM
Okay, I'm not entirely sure what the problem is here and I've tried everything I can think of to resolve it. I'm trying to finish up this rig as quickly as possible so I can finally move on to animating and rendering. Basically, when I move the master, hip, spine, or neck controls, the joints at the top of the spine and top of the neck are... hyper-extended. I'm not sure what to call it. They are the ends of the only spline IKs in my rig, so is that the problem? Here's the things I've tried, along with screenshots that I hope explain what I'm talking about.

-using a parent constraint to constrain the joint to a null object
-parenting the joint to a null object
(I found that I can't parent anything to the first or last joint in the IK... chain? I've got a horrible vocabulary when if comes to things like this.)
-doing the above to cluster of the topmost point of the curve, the IK handle, the topmost point of the spline curve
(some things, like parenting the IK, I've kept. Those had been moving with everything else.)

Before Moving (
After Moving (

11 November 2008, 08:07 PM
It looks like you're getting double transformations (usually meaning that they are parented to 1 thing and parent constrained to another) on either the bones,the IK spline, the spine controls, or perhaps the clusters.

I would go through each of those in the Hypergraph and look at all their incoming connections, but if you're uncomfortable with that then just try to remember what you have done to that part of the body.

Hope this helps, good luck!

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11 November 2008, 08:07 PM
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