Quote Originally Posted by Ulrich Drolshagen View Post
Interesting link, I didn't notice. But it can not be the same equation. I'll try it out. May be it will give even more pleasing results.

I think maybe you are assuming a square print? The original effort accepts rectangular images. I note he also has improved it quite a bit since I downloaded a copy for safekeeping a while back. Cotrell's implementation does some warning checks and offers vertical centering or top and sides equal as options too. Plus he now has input for the frame overlap. I had started to hack a copy of the old one to do that, but as usual the project of the moment didn't allow time to play with the tools!

(There is a lot of Javascript in there!)