Re: [filter-effects] hue-rotate() and saturate() filters from Tab Atkins Jr. on 2013-10-15 (public-fx@w3.org from October to December 2013)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Tue, 15 Oct 2013 10:07:33 -0700
To: Chris Lilley <chris@w3.org>
Cc: Dirk Schulze <dschulze@adobe.com>, Michael Mullany <michael@sencha.com>, "public-fx@w3.org" <public-fx@w3.org>
Message-ID: <CAAWBYDB+wmpiKRN0p3S8W4q=z4eSb+wvf-kdoBz24RNBELHc9w@mail.gmail.com>

On Tue, Oct 15, 2013 at 9:11 AM, Chris Lilley <chris@w3.org> wrote:
>> The definition of "hue" is indeed the same between HSL and what
>> <feColorMatrix huerotate> is doing
>
> In fact, no. feColormatrix is simply an affine 3D transformation of an
> RGB cube while HSL involves conversion to a hexagonal shape and then
> projection of that:

Ah, I was assuming that they gave the same results, but I suppose I
can't notice small hue differences when the sat/light changes
dramatically as well, as in the examples earlier in the thread.

~TJ

Received on Tuesday, 15 October 2013 17:08:20 UTC