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Spline dynamics hair tag question.
Hi! I’ve actually figured out a work-around to my question with clothilde so this question really doesn’t need an answer, but I’m wondering if this is possible…
https://s13.photobucket.com/albums/a281/neonangel1/?action=view¤t=splineik1.jpg
In this first pict I’ve set up an IK Spline on a Spline Dynamic Hair Tag (I’m guessing it’s not meant to be used this way).
https://s13.photobucket.com/albums/a281/neonangel1/?action=view¤t=splineik2.jpg
In this second pict you can see that I’m trying to simulate a sort of cloth effect on an IK Spline with a Spline Dynamic hair tag. (It sorta works as long as I don’t try to rotate anything.)
https://s13.photobucket.com/albums/a281/neonangel1/?action=view¤t=splineik3.jpg
But as you can see in this third pict that after running the simulation a couple times some of the joints in the middle of the IK Spline get all out of wack. (They start twisting for no apparent reason and keep on twisting…)
I’ve tried using an Up-vector Constraint Tag for all the joints but that just makes things worse. All the joints start jumping and twisting all over the place. Actually I’ve tried a variety of things to limit the banking of joints but with no success.
So basically I’m wondering if it’s somehow possible to constrain the banking of a joint on an IK Spline attached to a Spline Dynamic hair tag?
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2 Replies
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I don’t know how the setup is different but this seems to work
https://homepage.mac.com/bdjones/.public/SplineDynamic.zip
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Hey Brian,
Thanks for responding. Yes, that example is sorta what I’m going for but the difference in the pictures I posted is that I have a bunch of joints attached to the spline with an IK Spline Tag.
Here’s a link of the scene in the pictures and how I have it set up. (Let it play a couple of times and you’ll see the joints in the middle of the chain start twisting. Note that you need Mocca for this to work.)
https://download.xdrive.com/s/351508300Es34zcStVQ6IRBYhLGc&partner=plus
The geometry is weighted and being deformed by the bones.
It’s not important really, I just kinda see a benefit of being able to deform models with joints attached to a hair spline. (i.e. – chains, coat tails, hair that’s modelled to look like clay, etc. – basically objects that aren’t perfectly cylindrical in shape.)
I’m guessing the problem is that points on a spline don’t actually have a coordinate system and that’s why I can’t make the joints attached to them maintain their orientation…but that’s just a guess.
Anyway thanks for trying to help! 🙂
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