Hi everyone!

I am trying to make a custom UV layout setup that takes into account which materials are assigned to a primitive and grouping their UV islands together. Depending on which material a primitive has assigned to it it has a prim attribute that corresponds to the material.

My plan was to create a for loop that takes the total number of materials used as the number of iterations. I created a detail attribute that has a list of all the materials in an array and I want to use the iteration number to iterate over that array and use that to only create a uv layout for one material at a time. When the loop is done and every material has a layout that has the uv islands grouped together, I would use the uv layout node aga
in and keep the islands connected via the connectivity override.

Unfortunately I cannot figure out how to drive the group parameter in the uv layout node with the content of my "currentGroup" attribute. In my current state I use this expression:





however it does not seem to work.

Can anyone tell me how one would achieve this or even have a more clever way of achieving the same thing?

Cheers!

It would help to see the content of your wrangle, but I would probably try to create a currentGroup directly in the wrangle, with an unchanging name but changing content, and perform the uv layout on that.

Here is the content of the Wrangle node.



If I am understanding you correctly that is what I am currently trying to do.

I would try making the wrangle a Primitive wrangle, and changing its last line to:


Then just use currentGroup in your uv layout group parameter.