R0J0hound - thanks for trying! I'm only asking out of curiosity and haven't got a project specifically in mind for it.
I'm guessing then that there's no low level way to treat the layout coordinates system in such a way that 0 and layout.width or height are equivalent, like you might with 0 and 360 when dealing with angles? Essentially saying, "topologically this layout doesn't exist on a flat plane, it's actually wrapped around a cylinder/donut".