how to get the real bounds with google maps when fully zoomed out

Question

I have a map that shows location points based on the gbounds of the map. For example, any time the map is moved/zoomed, i find the bounds and query for locations that fall within those bounds. Unfortunately I'm unable to display all my locations when fully zoomed out. Reason being, gmaps reports the min/max long as whatever is at the edge of the map, but if you zoom out enough, you can get a longitudinal range that excludes visible locations.

For instance, if you zoom your map so that you see NorthAmerica twice, on the far left and far right. The min/max long are around: -36.5625 to 170.15625. But this almost completely excludes NorthAmerica which lies in the -180 to -60 range. Obviously this is bothersome as you can actually see the continent NorthAmerica (twice), but when I query my for locations in the range from google maps, NorthAmerica isn't returned.

My code for finding the min/max long is:

bounds = gmap.getBounds();
min_lat = bounds.getSouthWest().lat()
max_lat = bounds.getNorthEast().lat()

Has anyone encountered this and can anyone suggest a workaround? Off the top of my head I can only thing of a hack: to check the zoom level and hardcode the min/max lats to -180/180 if necessary, which is definitely unacceptable.

Answer 1

This isn't the most elegant solution, but I tested it and it does work. Check to see if the current bounds contains the bounds of the full map. Google doesn't actually include the north and south pole, so I had to tweak it to go almost all the way north and south.

bounds = gmap.getBounds();
var fullEarth = new GLatLngBounds(new GLatLng(-85, 180), new GLatLng(85, -180)))
var isFull = bounds.containsBounds(fullEarth);
min_lat = isFull ? -90 : bounds.getSouthWest().lat()
max_lat = isFull ? 90 : bounds.getNorthEast().lat()

min_lng = isFull ? 180 : bounds.getSouthWest().lng()
max_lng = isFull ? -180 : bounds.getNorthEast().lng()

Answer 2

Can not even imagine how this HUGE bug is still there !!! isFullLng and toSpan functions are buggy and you can not rely on them.
My bug workaround for this:

var zoom = map.getZoom();
var bounds = map.getBounds();    
var span = bounds.toSpan();
var isFull = span.lng() > 277 || zoom < 2;