yellowCircle.swift

func moveYellow() {
        self.yellowView.layer.cornerRadius = self.yellowView.frame.width/2
        self.yellowView.clipsToBounds = true
        
        let circlePath = UIBezierPath(arcCenter: CGPoint(x: DeviceScreen.main.centreX ,y: DeviceScreen.main.centreY), radius: 100.0, startAngle: CGFloat(0), endAngle:CGFloat(Double.pi * 2), clockwise: true)
        
        let animation = CAKeyframeAnimation(keyPath: #keyPath(CALayer.position))
        animation.duration = 5.0
        animation.repeatCount = MAXFLOAT
        animation.path = circlePath.cgPath
        
        self.yellowView.layer.add(animation, forKey: nil)
    }