Rex,

Congrats to Len. As to the z-axis for SVG, I've got some really grave
misgivings about that. Don't get me wrong -- I'd love to be able to extend
SVG into three dimensions, but that kind of change will have a radical
effect upon the language. Transformation matrices would need to be extended
to be four dimensions, five if, as I think necessary, we want to explore
non-affine transformations. Fills become more complex, since you are now
talking about volume fills vs. surface fills. Do clip-paths become
clip-regions? In other words, its certainly doable, but it holds a whole
host of related issues that pop up.

I think what may be better would be for the Web 3D consortium, when they
propose X3D into the W3C, to view it as a first pass towards a full
reconciliation between SVG and X3D. You can essentially define a surface
within an X3D that acts as the rendering canvas for an SVG graphic. X3D2 and
SVG agree upon a common set of XML Events, with X3D2 essentially adopting
the SMIL architecture. The RAX story with SVG 1.2 also needs to be resolved,
and this is one area where the two could very definitely share a common code
module.

Just my two cents worth.

-- Kurt


----- Original Message -----
From: "Rex Brooks" <rexb@...>
To: <metaphorical@yahoogroups.com>
Cc: <huml@...>
Sent: Monday, July 07, 2003 1:50 PM
Subject: Re: [metaphorical] "Event Loops, XSLT, and XForms" and SVG


> I'm copying this to the HumanMarkup TC list because Len Bullard was
> named to the Web 3D Consortium Board, and mentioned that there had
> been some moves to build a z-axis into SVG for 3D, and I would like
> to know what this list sees in that.
>
> Ciao,
> Rex
>
>
> >At the end the "Event Loops, XSLT and XForms" section of Kurt's
> >latest newsletter he mentions using SVG as the principal language for
> >GUIs on the internet, which definitely strikes chord with what I've
> >been pitching. I'll be talking about using SVG to create Declarative
> >UIs at the XML DevCon later this week.
> >
> >The word is out that the next MS OS will be using an XML based Vector
> >Graphics language to create its UI, and will render to DirectX, so
> >talking about using SVG to do the same for other platforms is the way
> >to go. It will definitely make cross platform UIs a whole lot easier
> >than the current HTML model. And don't get me going about XUL. It
> >is good, and can be used in this model, but it would need to be
> >rendered to SVG, not directly to the graphics API layer. This way
> >you could create your own UI elements, mix them with XUL, and have
> >them rendered down to the same language before going to the graphics
> >API.
> >
> >DonXML
> >
> >
> >
> >
> >To unsubscribe from this group, send an email to:
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> >
> >
> >
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>
>
> --
> Rex Brooks
> GeoAddress: 1361-A Addison, Berkeley, CA, 94702 USA, Earth
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> Email: rexb@...
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>