markc@hpcvlx.cv.hp.com (Mark Cook) (12/06/89)
I'm expanding the capabilities of an X Windows-based raster graphics editor and I'm having some trouble finding an algorithm which will allow me to apply an arbitrary amount of rotation to a rectangular raster image. I have an abbreviated copy of the Catmull-Smith 2-pass transform, but am having trouble translating it into the appropriate Xlib transforms. If anyone has examples of other raster rotation schemes which I could convert to Xlib, I'd greatly appreciate seeing how else it can be done. Thanks in advance, Mark F. Cook USMail: User Interface Technical Support Hewlett-Packard - Corvallis Information Systems 1000 NE Circle Blvd. Corvallis, OR 97330 ARPA: markc%hpcvss@hplabs.HP.COM UUCP: {cmcl2, harpo, hplabs, rice, tektronix}!hp-pcd!hpcvss!markc