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Point deformations during translation


DeehrBYU

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I feel like I post questions on here way too often... I have been styling a character's hair by manipulating points on the guide hairs using soft transforms. When I translate the head geometry, the hair blows up. Unfortunately, a simple rest position SOP is not solving this, because I did my edits on the point level without using the shelf tools (because there currently isnt one for that. Maybe Houdini 11?) . I assume I will need to append some sort of SOP network onto the tail end of my edits to "freeze" them in place. Can anyone give any hints? If you look in the file, the hair is still a WIP, thanks.

MainBoyv4.hipnc

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Update if anyone cares:

My friend helped me understand that the problem is due to all the soft transform edits were being done in world space. My new theory is that since each guide hair runs out of a vertex of the head geometry, I can use an expression to put in tX, tY, tZ, rotateX channel etc etc... of the base guide hair point that always points to the position of that vertex on the head geometry. That should do the trick. Then ideally, I can code up a tool that will run it automatically. Unless there is a simple way to make the soft transform go into local space, but I saw no option for that...

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