Stitching individual images together into a "projectable" whole?

[worldbuilding pasta]

I don't know if it's exactly what you're looking for but part of my goal in coding this was to allow direct projection between any two arbitrary aspects (rotations of the globe relative to the projection). The reprojection is still lossy, as is necessarily the case for any approach to reprojecting raster images, but reducing the number of reprojection steps helps minimize that loss.

[CptLande]

I know this is probably too late now, but I just posted a thread with a tutorial to use photoshop to do exactly what you want to do. I'm just waiting for mod approval, but it is also available here: https://www.reddit.com/r/mapmaking/c...e_that_can_be/