[Tilecache] Convert Spherical Mercator coordinates to Lat/Lng?

[Christopher Schmidt]

On Sun, Nov 16, 2008 at 05:13:57PM -0500, chris marx wrote:
> Hi,
>  I've got the TileCache TSM service working (thanks to the list for tips!),
> but unfortunately, my WMS does not support the "Spherical Mercator"
> projection. For the moment, i rewrote the wms service to switch up the espg
> and coordinates from tilecaches's tsm request and converting them to
> lat/lng, so that at least the WMS request will go through, but I assume a
> standard mercator projection to do the conversion (which is obviously
> wrong). Since my GIS/WMS doesn't support this projection, does anyone have
> the necessary code to convert coordinates from the spherical mercator to
> lat/lng?
> Thanks!

http://trac.openlayers.org/browser/trunk/openlayers/lib/OpenLayers/Layer/SphericalMercator.js#L80

Regards,
-- 
Christopher Schmidt
MetaCarta