return [Geomodel::Math.distance(point, Geomodel::Types::Point.new(bbox.south, point.lon)),
                  Geomodel::Math.distance(point, Geomodel::Types::Point.new(bbox.north, point.lon)),
                  Geomodel::Math.distance(point, Geomodel::Types::Point.new(point.lat, bbox.east)),
                  Geomodel::Math.distance(point, Geomodel::Types::Point.new(point.lat, bbox.west))].min