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[css3-images] processing model for transformations (image() vs. image-orientation)

From: L. David Baron <dbaron@dbaron.org>
Date: Wed, 30 Nov 2011 16:03:41 -0800
To: www-style@w3.org
Message-ID: <20111201000341.GA28807@pickering.dbaron.org>
There are multiple features in css3-images that can transform an
image.  For example:

http://dev.w3.org/csswg/css3-images/#image-notation defines the
'ltr' and 'rtl' keywords which can cause an image to be flipped
horizontally.

http://dev.w3.org/csswg/css3-images/#image-orientation defines the
image-orientation property which can cause an image to be rotated.

It matters which one happens first, since doing them in a different
order produces different results when image-orientation computes to
90deg or 270deg.  css3-images should define a processing model that
says so.

(It may also be worth clarifying that all of this processing happens
before CSS transformations.)

-David

-- 
𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                           http://www.mozilla.org/   𝄂
Received on Thursday, 1 December 2011 00:04:15 GMT

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