Merging mapping/vector changes per island to retain textures?

[The_Blue_Nile]

Sorry for the awful title, I have no idea how to word it.

So at its most basic I want to, using geometry nodes:

-Have a base mesh with UVs.

• Delete faces of the base mesh based on an image texture using UV mapping.

-Create an extruded ‘shell’

• Delete faces of this shell, but offset the original mappings location.

• Have the merged base and shell retain corresponding, original UV (base) and offset UV (shell) for texturing.

I have included images outlining a current approach.

I am aware this is much easier task to accomplish in other ways - this query is a small segment of a much bigger node tree.

Thanks in advance!

Nodes

Base Geo (after subdiv) showing arbitrary texture

Base Geo + Delete faces

Base Geo + Shell. Shell ‘deletion mapping’ has been offset, but for texturing purposes it still retains the original UVs.

uv shell help.blend (1.4 MB)

[zeroskilz]

Hi

You can use the Capture Named Attribute node to store the new UVs of the “shell”.

Good luck.

[The_Blue_Nile]

Thank you! So simple, as always I was totally oblivious. Sorry to bug you more but do you have any idea on how to ‘merge’ the original and offset uv to be passed onto the shader/texture.

Here’s my current attempts which I am guessing is a totally wrong way to use the capture attribute - so I’m reading the blenddocs a bit more.

[zeroskilz]

Check your spreadsheet and you’ll see the name of the UV attribute:

So, when you add a Store Named Attribute node to your network, you can select that Attribute:

So, just add your “mutated” UVs in, before the Join Geometry node:

Good luck.

[The_Blue_Nile]

Aha! zeroskilz is definitely an ironic name dude cause you helped me so much. Thank you!!!