[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.

Also, how close is this to: http://pippin.gimp.org/xcf2/

Jon

-- 
Jon Phillips

San Francisco, CA
USA PH 510.499.0894
jon at rejon.org
http://www.rejon.org

MSN, AIM, Yahoo Chat: kidproto
Jabber Chat: rejon at gristle.org
IRC: rejon at irc.freenode.net

Inkscape (http://inkscape.org)
Open Clip Art Library (www.openclipart.org)
Creative Commons (www.creativecommons.org)
San Francisco Art Institute (www.sfai.edu)