Andreas Hocevar wrote: > Tim Schaub wrote: >> Currently, when a new base layer is set, we determine the new >> resolution based on the previous map extent. An alternative would be >> to determine the new resolution based on the previous scale. >> Preserving center and scale makes better sense to me. I'm curious >> what others think. >> > > I totally agree. This should also improve behavior when switching > between base layers with different projections/units. >
Thanks for the feedback. I put this in with r10014. (By the way, how did we forget to celebrate http://trac.openlayers.org/changeset/10000 ???) If anybody notices any funkiness, please re-open ticket #2457 or create a new one. I removed a couple conditions that seemed unnecessary to me - but perhaps there were real cases for them (e.g. prefer map.getExtent().getCenterLonLat() over map.getCenter()). At least now you can center your dateline-wrapping map on the Bering Sea and switch base layers without ending up in Denmark. Tim > -Andreas. > >> The resolution based on extent method breaks down when extents are not >> well defined. E.g. with an extent that wraps the date line. To see >> this break-down in action, follow these steps: >> >> 1) open http://openlayers.org/dev/examples/google.html >> 2) click to zoom all the way out (you'll see multiple worlds) >> 3) open the switcher and change base layers >> >> You should see the scale change. >> >> Apply the patch for http://trac.openlayers.org/ticket/2457 and you >> should see better behavior. >> >> Thanks for any feedback. >> Tim >> >> > > -- Tim Schaub OpenGeo - http://opengeo.org Expert service straight from the developers. _______________________________________________ Dev mailing list Dev@openlayers.org http://openlayers.org/mailman/listinfo/dev
