private GeoRect getViewPortGeoRect() {
LatLngBounds viewPortBounds = googleMap.getProjection().getVisibleRegion().latLngBounds;
LatLng tl = new LatLng(viewPortBounds.northeast.latitude, viewPortBounds.southwest.longitude);
LatLng br = new LatLng(viewPortBounds.southwest.latitude, viewPortBounds.northeast.longitude);
return new GeoRect(tl, br);
}
@Override
public Projection getProjection() {
return googleMap.getProjection();
}