Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!wuarchive!bcm!etaylor
From: etaylor@wilkins.iaims.bcm.tmc.edu (Eric Taylor)
Newsgroups: comp.windows.x
Subject: Re: Wanted Gray Scale Bitmaps
Message-ID: <2989@gazette.bcm.tmc.edu>
Date: 30 Nov 90 20:27:39 GMT
References: <9011291959.AA04406@expo.lcs.mit.edu>
Sender: usenet@bcm.tmc.edu
Reply-To: etaylor@wilkins.iaims.bcm.tmc.edu (Eric Taylor)
Organization: Baylor College of Medicine, Houston, Tx
Lines: 18
Nntp-Posting-Host: wilkins.iaims.bcm.tmc.edu


Well, you can only get so precise with your shades.
The more shades you get, the bigger the pixmaps have
to be and the farther you have to be from your screen.

You could use the Floyd-Steinberg algorithm to
generate your shades.  Look at xloadimage for details.

i.e.  Use a pixmap (say 64x64) and modify
the Floyd-Steinberg algorithm to try applying a single
gray level value to each pixel.  You will get very
pleasing results since the F&S algorithm will minimize
the contact between black values in your shade.
--
					Eric Taylor
					Baylor College of Medicine
					etaylor@wilkins.bcm.tmc.edu
					(713) 798-3776