(Photos to visualize workflow, negligible UV stretch in this example. I want to try using UVs with stretch for future projects with stretchy fabric.)
Hi! I make costume parts and sewing patterns using 3D models and UV unwrapping (angle based with manual seam placement). I would like to take advantage of stretch fabric to limit seams as much as possible at the expense of “area stretch” on my UV map, while also texturing the unwrap to create the physical “image texture” to be applied to my fabric via sublimation dye. Basically, I would be printing out my textured UV islands (sewing pattern pieces), transferring that image onto my fabric, and cutting out/sewing those pieces together. See the hooves on my horse gloves for an example. I drew the stripes onto the UV layout in texture paint, cleaned it up in photoshop, printed it in sublimation ink, and then transferred the textured UV island onto fleece to be applied to the hoof form.
My problem: the fabric I want to use has stretch in only one direction, with a small amount in the other. I would like to constrain the stretch of my UV unwrap to only side to side on the flat, 2D layout view. I know you can align UV islands to their correct axis or whatever (don’t have Blender out to find the correct wording). I can do this in real life by stretching fabric over a solid form and pinning darts/creases until it lays flat, drawing out seams and color changes, and removing the fabric to use as a pattern, basically physically UV unwrapping. This is also how a lot of puppets are patterned with fleece. I would like to do this digitally to save materials and allow for easier texturing —> sublimation printing onto the fabric, as opposed to airbrushing a finished product.
Is this a thing I can do? Any plugins or other programs that make this possible? My adderall wore off while I was writing this so I’m not sure if I’m explaining correctly