[CREATE] OpenRaster core XML pondering (Re: OpenRaster page)

[Jon Phillips]

On Sun, 2006-08-20 at 05:50 -0400, Øyvind Kolås wrote:
> On 8/10/06, Øyvind Kolås <pippin at gimp.org> wrote:
> > On 8/10/06, Alexandre Prokoudine <alexandre.prokoudine at gmail.com> wrote:
> > > On 8/10/06, Jon Phillips wrote:
> > > I'd like to elaborate on e). We can't design a flawless new file
> > > format just theoretically, because as soon as we start implementing
> > > support for it, we shall struggle with all kinds of issues. And we
> > > clearly don't want revisions of specifications submitted to OASIS,
> > > don't we?
> > ..
> >
> > GEGL doesn't need integration into GIMP to be used as a testbed, in I
> > am already using it as a testbed to develop my ideas for how to
> > implement a layer tree structure.
> > ..
> 
> I've sketched an XML model which I'll try to implement a renderer for next week.
> 
> The code sample is a jpg with an svg layer with a proceduraly
> generated drop-shadow as  a group layer.
> We can use clones (instead of referencing gegl.svg twice), then all
> directed acyclic graphs using just sources, filters, and composer
> nodes can be expressed (thus making the graph equivalent of multiple
> output or >2 inputs the only capability not supported.
> 
> <image>
>   <layers>
>     <layer x='128' y='128'>
>       <layer x='15' y='15' composite-op='under' opacity='0.6'>
>         <filter class='gaussian-blur' radius='20'/>
>         <filter class='set-luminance' value='0.0'/>
>         <layer src='gegl.svg'/>
>       </layer>
>       <layer src='gegl.svg'/>
>     </layer>
>     <layer src='carstack.jpg'/>
>   </layers>
> </image>
> 
> Any comments or suggestions?
> 
> /Øyvind K.

This all looks pretty interesting...where else is this spec'd out?
Krita-devs, what are you guys thinking? Pippin, it would be great to get
some more core gimp developers on here to discuss this as well...

I'm starting to think more about how GEGL and this new OpenRaster XML
format could really be the core for the next gen bitmap programs...I'm
getting into this!

We should put some our openraster branding on the root tag...like how
there is a <svg />... :) What about <openraster /> or
<pippin_is_a_pimp />

What does OpenDocument use for the root element? I wonder how we can
best integrate with ODF?

Jon

-- 
Jon Phillips

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