let view = UIView(frame: self.view.bounds)
    self.view.addSubview(view)


    let circle = UIView(frame: CGRect(x: 0, y: 0, width: view.frame.width - 20, height: view.frame.width - 20))
    view.addSubview(circle)
    circle.center = view.center
    circle.layer.cornerRadius = circle.frame.height / 2
    circle.backgroundColor = UIColor.gray.withAlphaComponent(0.7)




    let dotView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: 10))
    dotView.layer.cornerRadius = dotView.frame.width / 2
    dotView.backgroundColor = UIColor.purple.withAlphaComponent(0.89)
    dotView.center = circle.center
    circle.addSubview(dotView)


    let location1 = CLLocation(latitude: 21.642534, longitude: 69.607003)
    let location2 = CLLocation(latitude: 21.642083, longitude: 69.614587)

    let angleStep = CGFloat(location1.bearingRadianTo(location: location2))
    print(location1.bearingDegreesTo(location: location2))
    let xPos = cos(angleStep) * (circle.frame.width / 2)
    let yPos = sin(angleStep) * (circle.frame.width / 2)

    dotView.center = CGPoint(x:circle.center.x + xPos - circle.frame.origin.x, y:circle.center.y + yPos - circle.frame.origin.y);