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Re: [SMIL30 LC comment] 7.13.2 MediaPanZoom Module ( LC-1794)

From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
Date: Sun, 28 Oct 2007 13:47:43 +0200
To: www-smil@w3.org
Message-Id: <200710281247.44163.Dr.O.Hoffmann@gmx.de>

> Hello,
>
> The new text will be published with the next release.
> Here is an editor's draft copy (without the styling and images), but it
> does indicate the text changes.
>
> -d.
> PS: this text is not final and is subject to further change before
> publication.

Thanks...


>This section is informative.

Then it can be done in another way too by authors and implementors?


>If the profile integrating the panZoom element allows each of the attribute 
>values to be animated, care should be taken to choose an animation 
>calculation mode that will yield predictable results (such as using a linear 
>mode). 

This sounds very vague, but this can be assumed to be solved, if
this is specified in general, see last point in
http://lists.w3.org/Archives/Public/www-smil/2007OctDec/0048.html


>The animation of mixed percentage/pixel values for height and width 
>is not recommended.  


It would be possible for the viewer to convert all of them to unitless values, 
see the suggestions in (the as informative styled) 
http://www.w3.org/TR/2007/WD-SMIL3-20070713/smil-animation.html#animationNS-AnimationFunctionValueDetails

In this specific case this still works pretty good, because all values
describe a length somehow (for example in SVG fill and stroke may contain 
both interpolable values or URI/IRI of paint servers like gradients, a mixture
cannot be converted to something  interpolable in general, but this is a SVG
problem, nothing to care about in SMIL).

But it is ok too, to exclude this as a simplification for implementors, but 
then it should not be noted as informative?
Received on Sunday, 28 October 2007 11:49:53 GMT

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