[webmap-discuss] AJAX vector rendering "gathering"

Cameron Shorter cameron.shorter at gmail.com
Tue Oct 31 04:18:27 EST 2006


Thanks Bart:

Logs at:
http://crschmidt.net/irc/openlayers/log.cgi/2006-10-30

Anselm Hook dropped in afterwards and plans to help out with the coding too.

Bart van den Eijnden (OSGIS) wrote:
> 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:
>>&gt; There are a number of early implementations of AJAX GIS vector
> 
> rendering 
> 
>>&gt; that we are all involved in - and there seems to be a common desire
> 
> to 
> 
>>&gt; work together on this.
>>&gt; 
>>&gt; I suggest we have an IRC meeting where we can agree on a common
> 
> design 
> 
>>&gt; (at a high level) then volunteer for components.
>>&gt; 
>>&gt; that everyone who is interested join together in an IRC session in 12
> 
> 
>>&gt; hours at:
>>&gt;
> 
> http://timeanddate.com/worldclock/meetingdetails.html?year=2006&amp;month=10&amp;day=30&amp;hour=19&amp;min=0&amp;sec=0&amp;p1=240&amp;p2=16&amp;p3=179&amp;p4=137
> 
> 
>>&gt; 
>>&gt; Sydney        Tue 6:00:00 AM    UTC+11 hours EST
>>&gt; Amsterdam    Mon 8:00:00 PM    UTC+1 hour CET
>>&gt; New York    Mon 2:00:00 PM    UTC-5 hours EST
>>&gt; Los Angeles     Mon 11:00:00 AM    UTC-8 hours PST
>>&gt; Corresponding UTC (GMT)    Monday, 30 October 2006 at 19:00:00
>>&gt; 
>>&gt; Channel:
>>&gt; irc://freenode.net#openlayers
>>&gt; 
>>&gt; Agenda:
>>&gt; 00 - 05: Roll Call. Confirm agenda.
>>&gt; 05 - 10: Who is working on what, and what you plan to work on +
> 
> questions.
> 
>>&gt; 10 - 50: Design discussion.
>>&gt; 50 - 55: Coordinate efforts (who is working on what)
>>&gt; 55 - 60: Arange next meeting.
>>&gt; 60   --: Meeting close
>>&gt; 
>>&gt; People who have shown an interest so far:
>>&gt; =========================================
>>&gt; I'm writing vector rendering code for large GML datasets, currently 
>>&gt; using Mapbuilder but I'd like to move the logic into OpenLayers and
> 
> use 
> 
>>&gt; OpenLayers for the Mapbuilder rendering engine.
>>&gt; With Paul Spencer, I've started putting together a design at:
>>&gt;
> 
> http://wiki.osgeo.org/index.php/AJAX_WebMapping_Vector_Rendering_Design#Graphics_Class_Diagram
> 
> 
>>&gt; 
>>&gt; 
>>&gt; Paul Spencer has written vector rendering code for OpenLayers using 
>>&gt; IECanvas and has been discussing a new Vector rendering design with
> 
> me.
> 
>>&gt; 
>>&gt; Pierre Giraud and Bertil Chapuis have implemented vector rendering in
> 
> 
>>&gt; OpenLayers, including feature entry and editing at:
>>&gt; http://dev.camptocamp.com/~bchapuis/openlayers/examples/vector.html
>>&gt; 
>>&gt; Steven Ottens needs to edit features in a browser and I think he has 
>>&gt; plans for working on this soon.
>>&gt; 
>>&gt; Ed Dowding has put together design ideas at:
>>&gt; http://trac.openlayers.org/wiki/VectorDrawing
>>&gt; 
>>&gt; Patrice Cappelaere has written SVG and VML support for GeoRSS and GML
> 
> 
>>&gt; layers in Mapbuilder using elements of SLD for styling.
>>&gt; 
>>&gt; Others on the CC list have contributed to discussions. Please add
> 
> your 
> 
>>&gt; name and come along if you are interested.
>>&gt; 
>>
>>
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-- 
Cameron Shorter
http://cameron.shorter.net




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