1 files changed, 50 insertions, 0 deletions
diff --git a/platform/ios/demo/Examples/Swift/PointConversionExample.swift b/platform/ios/demo/Examples/Swift/PointConversionExample.swift
new file mode 100644
index 0000000000..79199aeeda
--- /dev/null
+++ b/platform/ios/demo/Examples/Swift/PointConversionExample.swift
@@ -0,0 +1,50 @@
+import Mapbox
+
+@objc(PointConversionExample_Swift)
+
+class PointConversionExample_Swift: UIViewController, MGLMapViewDelegate {
+    var mapView: MGLMapView!
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        mapView = MGLMapView(frame: view.bounds)
+        mapView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        
+        view.addSubview(mapView)
+        
+        // double tapping zooms the map, so ensure that can still happen
+        let doubleTap = UITapGestureRecognizer(target: self, action: nil)
+        doubleTap.numberOfTapsRequired = 2
+        mapView.addGestureRecognizer(doubleTap)
+        
+        // delay single tap recognition until it is clearly not a double
+        let singleTap = UITapGestureRecognizer(target: self, action: #selector(handleSingleTap))
+        singleTap.require(toFail: doubleTap)
+        mapView.addGestureRecognizer(singleTap)
+        
+        // convert `mapView.centerCoordinate` (CLLocationCoordinate2D)
+        // to screen location (CGPoint)
+        let centerScreenPoint: CGPoint = mapView.convert(mapView.centerCoordinate, toPointTo: mapView)
+        print("Screen center: \(centerScreenPoint) = \(mapView.center)")
+    }
+    
+    func handleSingleTap(tap: UITapGestureRecognizer) {
+        // convert tap location (CGPoint)
+        // to geographic coordinates (CLLocationCoordinate2D)
+        let location: CLLocationCoordinate2D = mapView.convert(tap.location(in: mapView), toCoordinateFrom: mapView)
+        print("You tapped at: \(location.latitude), \(location.longitude)")
+        
+        // create an array of coordinates for our polyline
+        var coordinates: [CLLocationCoordinate2D] = [mapView.centerCoordinate, location]
+        
+        // remove existing polyline from the map, (re)add polyline with coordinates
+        if (mapView.annotations?.count != nil) {
+            mapView.removeAnnotations(mapView.annotations!)
+        }
+
+        let polyline = MGLPolyline(coordinates: &coordinates, count: UInt(coordinates.count))
+
+        mapView.addAnnotation(polyline)
+    }
+}