dg@sundog.caltech.edu (DALE GARY) (10/25/90)
My associate left a message on this subject on comp.sys.amiga, but this is probably a better group for this question. We are trying to write a program that includes a zoom feature for taking part of a bitmap and displaying an enlarged version in another window. The LENS and ZOOM programs do this very well, so I would either like to find a version of those that work on a custom screen, or else find out how they do it so we can write our own routine. I think the VLT docs indicate that it is possible to use LENS on VLT's screen, but I have not found that program (not on the FISH disks, anyway). I assume this also requires using screenshare.library. As far as writing our own verion, when I think about how a zoom algorithm would work, I'm sure my version will take forever to update (sort of like DPaintIII's zoom feature :-)), so there must be a "trick" to it. Any ideas out there? Thanks. Dale Gary