b9c6293b2c
- Added Layer/FixedZoomLevels.js, which is a new pseudo-layer that all layers which have fixed zoom levels will need to extend. It provides alternative methods to initResolutions(), getResolution(), and getExtent() which depend on the fixed zoomlevel layer implementing getLonLatFromViewPortPx(), getViewPortPxFromLonLat() and getZoomForExtent(). For documentation of how this works, see the comments in the class header. git-svn-id: http://svn.openlayers.org/trunk/openlayers@1380 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf