Hi CineFriends,
I would like some insight concerning spline dynamics and hair constraints. I have a complex project which involves many dynamic hoses - part of a machine I’ve created. As I’m keyframing the motion, the ends of the hoses don’t move with the nulls that they’re constrained to. However, when I click “Play”, it all works perfectly - the hoses move and remain attached.
Here’s a simpler way of explaining this via a very basic example: A rope (consisting of a multiple point spline) has hair tag constraints applied which attach the end points to nulls. Hair spline dynamics are applied. This is simple and all works fine. When one of the nulls is keyframed to move toward the other, it plays back perfectly. However, if the null is manually moved with the mouse, the constrained spline end does not move with it.
So here’s my question: When in the stage of creating the animation (keyframing), shouldn’t hair constraints keep a spline attached to a null? I thought that it should…. such as when working with IK and dragging the Goal around and watching the joint structure follow.
Is there a way to do this? I suspect that I may be missing a simple step. I also tried this us Xpresso, with the same result.
Thanks for Your Insight,
Larry