Stumpy The Mutt on Nostr: Back in the 1990's I worked on some imaging software that ran on Mac (68030 Quadra), ...

Back in the 1990's I worked on some imaging software that ran on Mac (68030 Quadra), Windows 3.1 and O/S2. The X-Y origin was bottom left for Mac and Windows, but for O/S2 it was top left. And then most scanners produced images with the origin at the top right. I got pretty good at transforming images on the fly at that job.