On Saturday, February 25, 2012, 10:13:31 PM, Alexandre wrote: AP> On Sun, Feb 26, 2012 at 1:10 AM, Alexandre Prokoudine AP> <[email protected]> wrote: >> On Sun, Feb 26, 2012 at 1:03 AM, Andrew Chadwick wrote:
>>> Is there any reason why GIMP and Krita aren't (by quick >>> experimentation and/or code analysis) using this? >> It was a too quick one :) >> GIMP relies on Lab for doing compositing in Color blending mode when >> "Use GEGL" checkbox is enabled. AP> Ah, no :) AP> commit 18603ac192493296b191197a3e2b62c710398afd AP> Author: Martin Nordholts AP> Date: Sun Aug 2 21:35:10 2009 +0200 AP> Bug 401754 – Port Hue, Saturation, Value to CIE LCH AP> When using GEGL for the projection, use CIE LCH for the Hue, AP> Saturation and Value layer modes, just as we already do for the Color AP> layer mode. The Value layer mode will later be renamed to Lightness AP> since that is the semantics it has now. Assuming that means LCHab (as opposed to LCHuv) then SVG2 will have that one, as well. The advantage over HSV or HSL is much better perceptual uniformity. The disadvantage is that interpolation can produce out of gamut colours, which need to be clipped or, better, gamut mapped. -- Chris Lilley Technical Director, Interaction Domain W3C Graphics Activity Lead, Fonts Activity Lead Co-Chair, W3C Hypertext CG Member, CSS, WebFonts, SVG Working Groups _______________________________________________ CREATE mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/create
