Rotate a Image on Maps

Hi, my Name is Markus and I am working on my first app...

What I like to do

The user should be able to place an image freely on the map. The Image must scale in real world dimension. The user also should be able to rotate the image via a slider.

What I did so far

I guess there are smarter ways to do so but it works so fare. The only missing feature is the rotation functionality. I tried to rotate the UIImage but this results in a cropped image since the MKMapRect (which I need to scale) does not rotate

Code Block swift
class MapViewController: UIViewController {
    @IBOutlet weak var mapView: MKMapView!
    override func viewDidLoad() {
        super.viewDidLoad()        
        mapView.delegate = self
		// prepare the services/map ...
		
		// user can change the orientation via a slider ( 0-2*.pi -> 0-360° )
        draw(orientation: 0)
    }
    func draw(orientation: Double) {
        let region = mapView.region
        let center = region.center
        let pointsPerMeter = MKMapPointsPerMeterAtLatitude(center.latitude)
        // Real-World-Object with 24 Meters length and 4 Meters width
        let objectLength = pointsPerMeter*24
        let objectWidth = pointsPerMeter*4
        let mapSize = MKMapSize.init(width: objectLength, height: objectWidth)
        let mapPoint = MKMapPoint.init(center)
        let objectRect = MKMapRect.init(origin: mapPoint, size: mapSize)
        // clear the map
        mapView.removeOverlays(mapView.overlays)
        // create image overlay from Real-World-Object
        let objectOverlay = ImageOverlay(image: UIImage(named: "nameOfYourImageAsset")!, rect: objectRect.offsetBy(dx: -objectLength/2 , dy: -objectWidth/2))
        // add overlay to map
        mapView.addOverlay(objectOverlay)
    }
}
// found here https://stackoverflow.com/a/45989625/10878331
class ImageOverlay : NSObject, MKOverlay {
    let image:UIImage
    let boundingMapRect: MKMapRect
    let coordinate:CLLocationCoordinate2D
    init(image: UIImage, rect: MKMapRect) {
        self.image = image
        self.boundingMapRect = rect
        self.coordinate = rect.origin.coordinate
    }
}
class ImageOverlayRenderer : MKOverlayRenderer {
    override func draw(_ mapRect: MKMapRect, zoomScale: MKZoomScale, in context: CGContext) {
        guard let overlay = self.overlay as? ImageOverlay else {
            return
        }
        let rect = self.rect(for: overlay.boundingMapRect)
        UIGraphicsPushContext(context)
        overlay.image.draw(in: rect)
        UIGraphicsPopContext()
    }
}

If I place a UIImage (via UIImageView) right to the map, there is no relation to the map so I have no Idea how to scale. I hope to get at least some fresh ideas.

Kind Regards, Markus