override func draw(_ rect: CGRect) {
    let path = UIBezierPath(ovalIn: rect)
    let circleColor:UIColor

    switch group {
    case .forehead:
        circleColor = UIColor.red
    case .crowsFeetRightEye:
        circleColor = UIColor.green
    case .crowsFeetLeftEye:
        circleColor = UIColor.blue
    }

    circleColor.setFill()
    path.fill()
}

func initGestureRecognizers() {
    let panGR = UIPanGestureRecognizer(target: self, action: #selector(DragPoint.didPan(panGR:)))
    addGestureRecognizer(panGR)
}

@objc func didPan(panGR: UIPanGestureRecognizer) {

    if panGR.state == .changed {
        self.superview!.bringSubview(toFront: self)
        let translation = panGR.translation(in: self)

        self.center.x += translation.x
        self.center.y += translation.y

        panGR.setTranslation(CGPoint.zero, in: self)

    }

}