Dynamic output curves don't rotate with geometry

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Old 02 February 2010   #1
Dynamic output curves don't rotate with geometry

Someone PLEASE help me with this if you can. I've modeled some nurbs hairs to attach to dynamic curves for a cartoon hair look. This is the process I've followed: created curve, parented to head geometry, made curve dynamic, switched point lock to base, used the dynamic curve "current position" or "output curve" as a wire deformer for the nurbs hair I modeled. Everything works all good and fine until I rotate the characters head. The nurbs hairs follow the dynamic curve but do not rotate with the head I believe because the dynamic "current position" hair doesn't rotate, only the start position. Is there a way I can constrain the nurbs geometry so that it will rotate with the head? I've tried parenting the nurbs hair to the head and the start curve as well as constraining it to these. All these mess up the relationship to the "current position" curve. Losing much sleep and hair off of my own head!! Help!
 
Old 02 February 2010   #2
In order to get it to rotate properly you will need to use a spline IK setup instead of the wire deformer. Here are the basic steps:

Create a skeleton for each curve that you have created.
Add a spline IK handle with the Auto Create Curve Option turned off. Choose your joints and then the curve.
Parent the skeleton to your geometry.

Here is a scene file:

http://www.speffects.com/images/postings/hairRotate.mb
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Todd Palamar

www.speffects.com
 
Old 02 February 2010   #3
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