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

[Tim Schaub]

>Heres an interesting critique of prototype.js (you've probably seen
it):
>
http://blog.metawrap.com/blog/WhyIDontUseThePrototypejsJavaScriptLibrary
.aspx
>Aaron

I haven't spent enough time reading this to say for sure, but it seems
to me that Jame's McParlane's critique of prototype.js is entirely based
on a desire to misuse JavaScript arrays (instead of properly using
objects).
 
Anyone else have an opinion about this?
 
Tim
 



________________________________

	From: ka-map-users-bounces at lists.maptools.org
[mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of Aaron
Koning
	Sent: Tuesday, June 20, 2006 1:40 PM
	To: pspencer at dmsolutions.ca; ka-map-users at lists.maptools.org
	Subject: Re: [ka-Map-users] ka-Map and OpenLayers
	
	
	Heres an interesting critique of prototype.js (you've probably
seen it):
	
http://blog.metawrap.com/blog/WhyIDontUseThePrototypejsJavaScriptLibrary
.aspx
	
	Aaron
	
	
	On 6/20/06, Steve Lime <Steve.Lime at dnr.state.mn.us> wrote: 

		What does OpenLayers offer that ka-map doesn't ( besides
a better name ;-) )? The
		list you reel off of limitations is pretty substantial.
		
		Steve
		
		>>> Paul Spencer < pspencer at dmsolutions.ca
<mailto:pspencer at dmsolutions.ca> > 6/20/2006 1:28:19 PM >>>
		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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	-- 
	+--------------------------------------------
	|  Aaron Koning
	|  Information Technologist
	|  Prince George, BC, Canada. 
	+--------------------------------------------
	|  http://datashare.gis.unbc.ca/fist/
	|  http://datashare.gis.unbc.ca/gctp-js/ 
	+-------------------------------------------- 

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