Hi,

I imported a groom into houdini which is quite high in CVs so I ended up resampling
to a smaller number in order to do a vellum hair sim.
Post sim when I use guide deform to bind the original groom to the sim curves
I am seeing bad deformation artifacts.
I am using guide capture and deform with Barycentric weights.
Rest position for the groom and static mesh is near origin
Animated mesh and groom are in shot space.
Is there a way to get better deformation via guide deform or any other node ?

Thanks!

Also looking for an answer to this

any updates?

Experiencing the same problem. Only found that playing around with the create orientation attribute does some help... But it's still not great.

Also made a script for hairs that are the same as it's guides. So those would be captured outside of the hairdeform node. Those work perfect. So it seems the issue is the capture itself.

After playing around with this for I while, I have come to the conclusion that these artifacts are all guide length vs. hair length. If I make the guides that are driving the deformation as long as the longest hair, all the artifacts go away. I guess a work around for various hair lengths that you want more accurately deformed is to divide your groom into long and short groups and deform them separately.

Also, I have noticed that sometimes extra attributes (not sure which ones) on the animated guides can mess up the groom deformation, so if you are still getting weird results, try cleaning all the attrs from the animated guides.