- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 15 Oct 2013 10:28:40 -0700
- To: Chris Lilley <chris@w3.org>
- Cc: FX <public-fx@w3.org>
On Tue, Oct 15, 2013 at 9:02 AM, Chris Lilley <chris@w3.org> wrote: > Here is a proposal for a new feHSL element which performs hue rotation > and saturation changes without suffering from internal clipping. Due > to filter effects clipping after each primitive, saturation increases > will still suffer from clipping in a multi-stage pipeline. I was going to comment that it seemed like you've have issues on the the low end too (you lose the hue information), but it looks like you can't recover from a 0 saturation in a later filter, as you only have multiplicative adjustments. (My color adjusters in Colors 4 can do additive adjustments to saturation, so I keep the hue information around when possible.) > I didn't provide for any operations on the L axis of HSL because > operations on lightness or luminance are already available by other > means. Even if they are available by other means, I think it's worthwhile to reproduce them here, so that you have a complete and easy-to-understand interface. ~TJ
Received on Tuesday, 15 October 2013 17:29:26 UTC