[OpenLayers-Dev] Re: Background Layer in EPSG:900913 causes WMS overlays to fail

[Kris Peterson]

Hi Ulrik,

The maxExtent property of your map object needs to be set with appropriate
coordinates so that tile requests include the proper bounds. By default the
maxExtent property assumes a geographic projection (see
http://dev.openlayers.org/releases/OpenLayers-2.10/doc/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.maxExtent).
This is why your Request2 bounding box starts with -179 and -90. Include
something like:

maxExtent: new OpenLayers.Bounds(-20037508, -20037508, 20037508, 20037508)

in your map config options (this includes the whole world). So, for example,
your code might look something like this:

	mapBroken900913 = new OpenLayers.Map
	(
		"mapBroken900913",
		{
			projection : "EPSG:900913",
			maxResolution:2319.89824519781,
			units:'m',
			maxExtent: new OpenLayers.Bounds(-20037508, -20037508, 20037508,
20037508)
		}
	);

Hope this helps.

Regards,
Kris 

-----
Kris Peterson
www.mapbiquity.com
--
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