[ka-Map-users] ka-Map and OpenLayers

Delfos, Jacob Jacob.Delfos at maunsell.com
Tue Jun 20 19:49:33 EDT 2006


Would that mean you would basically replace the interface of Ka-Map, and
retain the tile-creating mapserver-based mechanism? To what degree would
it still be mapserver-oriented?

Approximately which core parts of Ka-Map do you think could be retained,
and what would definitely be lost? It sounds like you would need to get
rid of a lot of work you did...



> -----Original Message-----
> From: ka-map-users-bounces at lists.maptools.org 
> [mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of 
> Paul Spencer
> Sent: 21 June 2006 02:28
> To: ka-map-users at lists.maptools.org ML
> Subject: [ka-Map-users] ka-Map and OpenLayers
> Hello ka-Mappers!
> I had a very interesting discussion with the developers of  
> OpenLayers, a javascript api for tiled maps.  Turns out OpenLayers  
> and ka-Map are very similar.  We decided that it would be beneficial  
> for both communities if we attempted to merge the projects.  The  
> purpose of this email is to present this idea to the ka-Map 
> community  
> in order to generate some discussion on the subject.
> OpenLayers is hosted at http://www.openlayers.org/.  They have some  
> very interesting objectives which I think are compatible with ka- 
> Map.  Take a look at their site.
> OpenLayers is written on top of prototype.js, which was one of the  
> things I was planning to do with ka-Map in the next couple of 
> weeks.   
> It has a very nice looking architecture and the code base is very  
> readable.
> It is lacking quite a few things that ka-Map has:
> * core tiling engine is very similar, but it is not quite as optimal  
> (doesn't reuse images for instance)
> * overlay stuff is point/text only
> * lacking tools (layer controls, scale bar etc) and the 
> windowing stuff
> * lacking query capability
> * tile caching
> * probably several other things I can't think of right now
> I think that there are some differences in how OpenLayers and ka-Map  
> approach things, but I'm not entirely sure that they are significant.
> At this point, I am proposing to join the two projects into a single  
> project.  My desired approach would be to start with the OpenLayers  
> code and start to bring over the parts of ka-Map that I(we) feel are  
> missing.
> Please let me know what you think of this.  And point out all the  
> problems you can think of.
> Cheers
> Paul
> +-----------------------------------------------------------------+
> |Paul Spencer                           pspencer at dmsolutions.ca   |
> +-----------------------------------------------------------------+
> |Applications & Software Development                              |
> |DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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