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Re: [css3-2d-transforms] rotation and animation

From: mozer <xmlizer@gmail.com>
Date: Mon, 23 Mar 2009 18:12:53 +0100
Message-ID: <21d9ade60903231012g3f194512g3efed74367045663@mail.gmail.com>
To: "Dr. Olaf Hoffmann" <Dr.O.Hoffmann@gmx.de>
Cc: www-style@w3.org
2009/3/23 Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>:
> Hello,
> this comment applies to css3-3d-transforms as well.
> http://www.w3.org/TR/2009/WD-css3-2d-transforms-20090320/#animation
> http://www.w3.org/TR/2009/WD-css3-3d-transforms-20090320/#animation
> In the related section about the transformation functions it is noted, that
> for the <angle> type CSS Values and Units apply:
> http://www.w3.org/TR/css3-values/#angles
> This notes:
> "Angle values should be normalized to the range 0-360deg
> by the user agent."
> 2) authors might want to have a rotation from 30deg to 750deg,
> what means two complete turns and not no animation,
> or maybe from 90deg to -90deg, what is different from an
> animation from  90deg to 270deg (what has a
> different rotation direction too).
> Concerning animation I think, it is pretty useful not to
> modify the given values because this results in quite
> different effects as typically intended by the author,
> respectively authors cannot get the intended animation
> effect with only one rotation function at all.

So you might want to use the 'turn' unit for this purpose as specified
in the same place ( http://www.w3.org/TR/css3-values/#angles )

Received on Monday, 23 March 2009 17:13:39 UTC

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