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From: etaylor@wilkins.iaims.bcm.tmc.edu (Eric Taylor)
Newsgroups: comp.windows.x
Subject: Re: Can XAllocColor/XAllocNamedColor fail ?
Message-ID: <2703@gazette.bcm.tmc.edu>
Date: 9 Nov 90 20:24:17 GMT
References: <1990Nov8.174617.10793@ecn.purdue.edu> <1990Nov8.114127@wsl.dec.com> <1990Nov9.144721.22509@cadence.com>
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What we do here is the following:

	We allocate approximate 92 colors in the
	default colormap.  We distribute the colors
	as uniformly as possible :
		num_red = num_green = num_blue = 		cube_root(256)


	Which essentially gives us a DEFAULT_RGB colormap in the default colormap.  Image processing applications then reuse the exact same colors, doing color dithering (Floyd/Steinberg).  This allows us to have many applications displaying colorful images at the same time using the default colormap.
--
					Eric Taylor
					Baylor College of Medicine
					etaylor@wilkins.bmc.tmc.edu
					(713) 798-3776