[OpenLayers-Dev] ArcGIS server 9.2 support for OL

[Christopher Schmidt]

On Fri, May 16, 2008 at 07:38:26AM -0700, Yeroc wrote:
> 
> Hi...
> 
> Did this patch make it into OpenLayers?  I'm interested in this
> functionality and wonder if it's now a standard part of OpenLayers and if
> not, why not?  I didn't see any followups to this initial email...?

I never had a server I could test against, or anyone who confirmed it
worked other than stvn, and with only that reassurance, I wasn't
prepared to put it in trunk. 

It was in a sandbox of stvn's somewhere, I think, but I don't know
where. The FAQ might mention it.

-- Chris

> Thanks,
> Corey
> 
> 
> Steven M. Ottens-3 wrote:
> > 
> > Hi all,
> > 
> > With some help of Chris I've managed to access the tiles generated by 
> > ArcGIS server 9.2.
> > There's a public accessible server at: 
> > http://serverx.esri.com/antialiasingexamples/
> > ArcGIS server stores its prerendered tiles in a directory structure 
> > similar to TMS:
> > layername/zoomlevel/rownumber/columnnumber.filetype:
> > http://serverx.esri.com/arcgiscache/DG_County_roads_yesA_backgroundDark/Layers/_alllayers/L03/R0000147b/C0000138d.png
> > It also has an XML providing some extra data:
> > http://serverx.esri.com/arcgiscache/DG_County_roads_yesA_backgroundDark/Layers/conf.xml
> > 
> > The row number and column number are stored in hexadecimal and are 
> > calculated from the TileOrigin (upper left).
> > 
> > attached is a zip with two files and one patch:
> > ags2.html goes into examples and provides an example with the data of 
> > above mentioned site
> > AGS.js goes into lib/OpenLayers/Layer and provides the logic for the 
> > tile-url calculation
> > openlayers.diff adds AGS.js to OpenLayers.js
> > 
> > There's one major issue: you need specify the correct maxExtent to make 
> > sure that no tiles are requested outside the realm of the cache. Also 
> > this maxExtent should be a perfect fit for the tiles otherwise a weird 
> > offset is shown when zooming in and out. (I haven't calculated the 
> > proper extent yet, so one can see this erratic behavior).
> > 
> > Regards,
> > Steven
> > 
> > 
> 
> -- 
> View this message in context: http://www.nabble.com/ArcGIS-server-9.2-support-for-OL-tp9691195p17276333.html
> Sent from the OpenLayers Dev mailing list archive at Nabble.com.
> 
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-- 
Christopher Schmidt
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