I'm looking a setup for when I move a group of points, then it moves that points from UV in negate value.

Fox example, if move 2 units in X the index point 0, this point from UV will move -2 in U.

I started to plan this in ICE from SI, and need filter cluster of polys in the UVset, but not find the way.

My idea would be to import my geo from SI in alembic, and build this procedurement in Houdini.

How is the accessing to UV data in Houdini?

If make a point group in geo, the index for each point will be equal in UV?
Will have convert 3D array into 2D array?

Someone can show me what is the way?

Thanks!

Hello,
I think the best way is to do the math in a VOPSOP just like you would in ICE
an attribute vop can have 2 input so
In the first input you take the transformed points and in the second the non transformed one.
Then you can get your delta that you can bind to the UV…

Sound good no ?