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Re: Tinier SVG

From: Chris Lilley <chris@w3.org>
Date: Wed, 13 Nov 2002 11:10:39 +0100
Message-ID: <12558894562.20021113111039@w3.org>
To: www-svg@w3.org, "Simon St.Laurent" <simonstl@simonstl.com>

Hello Simon, www-svg,

You wrote
http://lists.w3.org/Archives/Public/www-svg/2002Jul/0017.html

> I've been looking over the SVG Tiny profile as part of a J2ME project
> and I have to admit finding myself questioning the name "Tiny".
> 
> Once I sort through all the modularization, it feels like SVG Tiny was
> designed somewhat grudgingly, perhaps by SVG authors who wanted to make
> sure that as much of SVG as possible would still work on their cell
> phone.  Paths can still include both Quadratic and Cubic Bezier curves
> (though elliptical arcs are out?).  Four places of decimals are still
> permitted for coordinates.  Animation is still in there, as is the use
> of JPEG images.

Yes, all that stuff is still in there. It was not designed by SVG
authors so much as by SVG implementors, particularly some big names in
the Mobile industry. So, clearly, they think the features both have
value and are implementable.

Animation is seen as a key requirement, even for Tiny - static
graphics are not too interesting for cellphones.

JPEG images are an obvious thing to keep given the number of phones
with color screens and little cameras, which are nearly ubiquitous in
Japan and the rest of the world is catching up fast.

You would have a hard job using less than four places of decimals if
the viewBox is 0 0 1 1 and you plan to zoom in at all (but we relax
precision constraints to allow fixed point arithmetic for mobile).

Have you looked at TinyLine, a JavaME implementation of SVG Tiny?

http://www.tinyline.com/svgt/index.html
http://www.tinyline.com/svgt/report/index.html
http://www.tinyline.com/svgt/download/index.html

It runs on various devices such as any J2ME phone, the Sharp Zaurus, etc. It
includes smil animation, and JPEG images.

The zip of the classfiles is 96 kilobytes. I agree SVGT could be made
smaller by cutting functionality, but its a nice sweet spot in terms
of capabilities and seems to fit will with what the devices are
offering in terms of imaging devices.
  

-- 
 Chris                          mailto:chris@w3.org
Received on Wednesday, 13 November 2002 05:10:38 GMT

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