- From: Chris Lilley <chris@w3.org>
- Date: Tue, 15 Apr 2003 06:24:31 +0200
- To: Chris Lilley <chris@w3.org>
- CC: (wrong string) Çelik <tantek@cs.stanford.edu>, Christoph Päper <christoph@paeper.de>, <www-style@w3.org>
On Tuesday, April 15, 2003, 6:04:10 AM, Chris wrote: CL> Actually no. The original algorithms for HSL to RGB were written in CL> 1978 by Alvey Ray Smith, who wanted to have a polar system that was CL> similar to the polar CIE LCH system introduced in 1976, but trading CL> simpler mathematics for lack of perceptual uniformity or colorimetric CL> accuracy. CL> Smith, A. R. "Color Gamut Transform Pairs". Computer Graphics 12, 3 (Aug. CL> 1978), 12-19. In connection with which, for implementors, this code from Graphics Gems (a series of books about useful graphic code) might be of interest. A Fast HSL-to-RGB Transform by Ken Fishkin, Pixar Inc., January 1989 from "Graphics Gems", Academic Press, 1990 http://www.acm.org/pubs/tog/GraphicsGems/gems/HSLtoRGB.c you will also need http://www.acm.org/pubs/tog/GraphicsGems/gems/GraphicsGems.h -- Chris mailto:chris@w3.org
Received on Tuesday, 15 April 2003 00:24:51 UTC