[OpenLayers-Dev] ArcGIS server 9.2 support for OL
cplists at gmail.com
Fri May 16 10:38:26 EDT 2008
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...?
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:
> ArcGIS server stores its prerendered tiles in a directory structure
> similar to TMS:
> It also has an XML providing some extra data:
> 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).
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