[ka-Map-users] Re: ka-Map: new open source project

[Paul Spencer]

Loading from the center is a good enhancement, we considered it but 
didn't have time to implement it yet.  You could file a bug at:

http://www.maptools.org/bugzilla
product: ka-Map
compoenent: core

Re the interlaced images, ka-Map allows you to configure which map 
file(s) you want in your application and what formats to use, so if GD 
allows specifying interlaced/non-interlaced then it could be an option.

Again a bug on this would be useful

Cheers

Paul

Blammo wrote:
> Paul,
> 
> One thing I noticed, is that the zoomin/out functions seem like they 
> should paint the tiles from the center, outwards. The User focus is 
> usually centered on a view for example.  Would need a whole different 
> algorithm for the tile painting though.  :c)
> 
> Another thought, did you try the same thing with interlaced images?  
> More from a speed of navigation perspective than anything else.  I 
> suppose they would hurt overall performance in the end though.
> 
> bobb
> 
> 
>  Paul Spencer wrote:
> 
>> ka-Map: new open source project
>> ===============================
>>
>> http://ka-Map.maptools.org/
>>
>> DM Solutions Group is pleased to annouce the release of a new MapTools
>> open source project aimed at the growing interest in highly interactive,
>> javascript mapping applications based on MapServer.  Here are some
>> details ...
>>
>> ka-Map provides many of the features that one should expect in a
>> state-of-the-art web-mapping application.
>>
>> Features include:
>>
>> * tile-based continuous panning
>>
>> * no page reloading
>>
>> * keymap, legend and scalebar
>>
>> * zoom in/zoom out
>>
>> * keyboard navigation
>>
>> * sliding effects for panning on double click (ok, that one's for fun!)
>>
>> We have also implemented some advanced features that are more in tune
>> with the MapServer community's needs:
>>
>> * configuration can include multiple map files with different extents,
>> image formats, and scales for each map file.  Client side interface can
>> include the ability to change between map files
>>
>> * ability to have layer visibility controls by drawing each GROUP as a
>> separate HTML layer on the client side
>>
>> * ability to use HTML legend template to build more advanced layer 
>> controls
>>
>> * flexible tile caching system
>>
>> * separation of the javascript logic from the HTML page to provide an
>> API with which to build your applications
>>
>> ka-Map is built on AJAX principles and uses the XmlHttpRequest object to
>> communicate with the server, providing a much more responsive user
>> interface.  The server side is implemented using PHP/MapScript (what
>> else!) but could easily be replaced with anything that would spit out
>> the equivalent javascript in response to the various requests.
>>
>> ka-Map uses cached tiles generated on demand by drawing much larger map
>> images and slicing them up.  The caching mechanism is currently quite
>> simplistic and could not handle large data projects, but it is
>> definitely sufficient for getting started.  There are issues with this
>> kind of tile generation, but it is almost essential for performance
>> given the current state of the art.
>>
>> ka-Map is aiming to be an API for developing mapping applications.  As
>> such, we are hoping it will be picked up by, and integrated into, some
>> of the other open source projects such as MapBender, ZMapServer,
>> GeoServer, and (of course) Chameleon.
>>
>> The home of ka-Map is:
>>
>> http://ka-Map.maptools.org
>>
>> Downloads and CVS are not quite ready, but you can try out the interface
>> by visiting our first public site based on this technology (basic
>> features only in this one):
>>
>> http://maps.dmsolutions.ca/
>>
>> Subscribe to the user list to find out when downloads and CVS access are
>> available, and also to participate in the ongoing development and
>> testing of this new technology.
>>
>> http://lists.maptools.org/mailman/listinfo/ka-map-users
>>
>> We are hoping this project will engage the MapServer community's
>> interest and gain momentum from user contributions.  Please join up and
>> start contributing if you are interested in this technology!
>>
>> Sincerely,
>>
>> Paul
>> -- 
>> +-----------------------------------------------------------------+
>> |Paul Spencer                           pspencer at dmsolutions.ca   |
>> +-----------------------------------------------------------------+
>> |Applications & Software Development                              |
>> |DM Solutions Group Inc                 http://www.dmsolutions.ca/|
>> +-----------------------------------------------------------------+
>>
>>
>>  
>>
> 
> 

-- 
+-----------------------------------------------------------------+
|Paul Spencer                           pspencer at dmsolutions.ca   |
+-----------------------------------------------------------------+
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
+-----------------------------------------------------------------+