Polygon Google Maps iOS SDK

polygon.swift

func polygon(){
    // Create a rectangular path
    let rect = GMSMutablePath()
    rect.add(CLLocationCoordinate2D(latitude: 37.36, longitude: -122.0))
    rect.add(CLLocationCoordinate2D(latitude: 37.45, longitude: -122.0))
    rect.add(CLLocationCoordinate2D(latitude: 37.45, longitude: -122.2))
    rect.add(CLLocationCoordinate2D(latitude: 37.36, longitude: -122.2))
    
    // Create the polygon, and assign it to the map.
    let polygon = GMSPolygon(path: rect)
    polygon.fillColor = UIColor(red: 0.25, green: 0, blue: 0, alpha: 0.2);
    polygon.strokeColor = .black
    polygon.strokeWidth = 2
    polygon.map = mapView
}