0.01:-0.01)); coor[i]=po; } coor[5]=CLLocationCoordinate2DMake(33.23, 113.112); MKPolygon * gon = [MKPolygon polygonWithCoordinates:coor count:6]; [_mapView addOverlay:gon]; [self.view
coordinate.longitude - 1) ] } private func overlay(coordinate: CLLocationCoordinate2D) -> MKPolygon { let rectangle = rectangle(around: coordinate) return MKPolygon(coordinates: rectangle