SreckoM Micic

As usual pure gold from you!

I hope one day I will be able to understand what you did here

Thanks a lot!

Thanks for this, will check these suggestions!

What I need to have is everything to be procedural. As this is going to be HDA in Unity.

Can you provide an example of a desired result?

I want island to be rotated as in world space. So bottom of UV island in 3D needs to be bottom of island in UV space too. Artist apply texture with arrows pointing up. On some parts of geo it is correctly pointing up, on others it is pointing down and others left or right (cause UV islands are randomly rotated). Need all of them to point up. I know I can do it with UV Unwrap, or like Cubic mapping, thing is that artist wants less islands, and less seams. As possible. UV Flatten gives me that, but introduce orientation.

Less advance version of this:

Packmaster [www.blendernation.com]

I use UV Flatten to proceduraly sew UVs, after UV Unwrap. Problem with this is that after flatten, UV islands are being randomly rotated. I need to have them be rotated as in World Space. There is also UV Layout node that has option to Axis Align as in 3D space, but that really does not do much.

Any tips for this?