[webmap-discuss] AJAX vector rendering "gathering"
Bart van den Eijnden (OSGIS)
bartvde at osgis.nl
Tue Oct 31 02:10:21 EST 2006
Hi Steve,
I can post a small summary.
There was a discussion about using the DOJO Vector library, but generally
OpenLayers is against introducing new dependencies (where they have just
been removing others like Prototype). So it did not seem like the most
appropriate option.
Paul Spencer has been writing some code in OpenLayers for DMSG's MapGuide
Fusion project, and this will be available roughly somewhere in the next
month(s). It is based on Canvas and uses Google's IECanvas library. Paul and
Christopher Schmidt claim this can do all they want to do for editing, even
things like snapping should be possible. Cameron had some reservations when
it comes to finding features on a map (performance e.g.), and attaching
events to features. The server-side part of the Fusion project will likely
not be open-sourced, but the vector part for OpenLayers will be. There will
be a need for a redesign of the stuff after Cameron and Paul finish their
general design.
Cameron is working on SVG rendering in Mapbuilder for his OWS-4 project, and
plans to integrate this into OpenLayers in the near future (maybe even next
couple of weeks). The two options (Canvas and SVG) are probably
complimentary.
Please correct me if I noted something incorrectly :-)
The IRC session was logged, but I don't have the URL unfortunately.
Best regards,
Bart
--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl
--------- Oorspronkelijk bericht --------
Van: webmap-discuss at mail.osgeo.org
Naar: webmap-discuss at mail.osgeo.org <webmap-discuss at mail.osgeo.org>
Onderwerp: Re: [webmap-discuss] AJAX vector rendering "gathering"
Datum: 31/10/06 00:27
> Cameron,
>
> I really wanted to attend, but had other commitments. Will someone post
> a summary of the discussion and any decisions/outcomes/etc.
>
> Thanks,
> -Steve
>
> Cameron Shorter wrote:
> > There are a number of early implementations of AJAX GIS vector
rendering
> > that we are all involved in - and there seems to be a common desire
to
> > work together on this.
> >
> > I suggest we have an IRC meeting where we can agree on a common
design
> > (at a high level) then volunteer for components.
> >
> > that everyone who is interested join together in an IRC session in 12
> > hours at:
> >
http://timeanddate.com/worldclock/meetingdetails.html?year=2006&month=10&day=30&hour=19&min=0&sec=0&p1=240&p2=16&p3=179&p4=137
> >
> > Sydney Tue 6:00:00 AM UTC+11 hours EST
> > Amsterdam Mon 8:00:00 PM UTC+1 hour CET
> > New York Mon 2:00:00 PM UTC-5 hours EST
> > Los Angeles Mon 11:00:00 AM UTC-8 hours PST
> > Corresponding UTC (GMT) Monday, 30 October 2006 at 19:00:00
> >
> > Channel:
> > irc://freenode.net#openlayers
> >
> > Agenda:
> > 00 - 05: Roll Call. Confirm agenda.
> > 05 - 10: Who is working on what, and what you plan to work on +
questions.
> > 10 - 50: Design discussion.
> > 50 - 55: Coordinate efforts (who is working on what)
> > 55 - 60: Arange next meeting.
> > 60 --: Meeting close
> >
> > People who have shown an interest so far:
> > =========================================
> > I'm writing vector rendering code for large GML datasets, currently
> > using Mapbuilder but I'd like to move the logic into OpenLayers and
use
> > OpenLayers for the Mapbuilder rendering engine.
> > With Paul Spencer, I've started putting together a design at:
> >
http://wiki.osgeo.org/index.php/AJAX_WebMapping_Vector_Rendering_Design#Graphics_Class_Diagram
> >
> >
> > Paul Spencer has written vector rendering code for OpenLayers using
> > IECanvas and has been discussing a new Vector rendering design with
me.
> >
> > Pierre Giraud and Bertil Chapuis have implemented vector rendering in
> > OpenLayers, including feature entry and editing at:
> > http://dev.camptocamp.com/~bchapuis/openlayers/examples/vector.html
> >
> > Steven Ottens needs to edit features in a browser and I think he has
> > plans for working on this soon.
> >
> > Ed Dowding has put together design ideas at:
> > http://trac.openlayers.org/wiki/VectorDrawing
> >
> > Patrice Cappelaere has written SVG and VML support for GeoRSS and GML
> > layers in Mapbuilder using elements of SLD for styling.
> >
> > Others on the CC list have contributed to discussions. Please add
your
> > name and come along if you are interested.
> >
>
>
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