A good textbook on 3d computer graphics will explain how to rotate a bitmap much more thoroughly than a PalmOS forum. Applying a rotation transformation matrix to every point in a rectangular bitmap is not even close to the most efficient algorithm.
Computer Graphics: Principles and Practice by Foley and van Dam, is one highly regarded textbook on the subject. You can also examine the code inside various software texture-mapped 3d renderers. You might also want to use interpolation if you don't want small bitmapped fonts to look even more ragged after rotation. IMHO. YMMV. Ron Nicholson HotPaw Productions http://www.hotpaw.com/rhn/palm -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
