func rotateRight() {
    UIView.animate(withDuration: 0.5, animations: {
        self.profileImageView.transform = CGAffineTransform(rotationAngle: (180.0 * CGFloat(M_PI)) / 180.0)
        self.profileImageView.transform = CGAffineTransform(rotationAngle: (0.0 * CGFloat(M_PI)) / 360.0)
    })

if loginRegisterSegmentedControl.selectedSegmentIndex == 0 {
        self.loginRegisterButton.backgroundColor = UIColor.blue
        loginRegisterSegmentedControl.tintColor = UIColor.blue
        rotateLeft()
        // Roll to the left
    } else {
        self.loginRegisterButton.backgroundColor = UIColor.red
        loginRegisterSegmentedControl.tintColor = UIColor.red
        rotateRight()
        // Roll to the right
    }

// Rotation
var viewAngle: CGFloat = 0    // Right-side up to start
let π = CGFloat.pi   // Swift allows special characters hold alt+p to use this, it allows for cleaner code

func rotate(by angle: CGFloat) {

    self.viewAngle += angle

    UIView.animate(withDuration: 0.5, animations: {
        self.profileImageView.transform = CGAffineTransform(rotationAngle: self.viewAngle)
        self.view.layoutIfNeeded()
    })

}

lazy var profileImageView: UIImageView = {
    let imageView = UIImageView()
    imageView.image = UIImage(named: "TTTdude")
    imageView.translatesAutoresizingMaskIntoConstraints = false
    imageView.contentMode = .scaleAspectFill

    imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(rotate)))
    imageView.isUserInteractionEnabled = true

    return imageView
}()



lazy var loginRegisterSegmentedControl: UISegmentedControl = {
    let sc = UISegmentedControl(items: ["iOS", "Android"])
    sc.translatesAutoresizingMaskIntoConstraints = false
    sc.tintColor = UIColor.black
    sc.selectedSegmentIndex = 0
    sc.addTarget(self, action: #selector(handleLoginRegisterChange), for: .valueChanged)
    return sc
}()

func handleLoginRegisterChange() {

    let title = loginRegisterSegmentedControl.titleForSegment(at: loginRegisterSegmentedControl.selectedSegmentIndex)
    loginRegisterButton.setTitle(title, for: .normal)

    if loginRegisterSegmentedControl.selectedSegmentIndex == 0 {
        self.loginRegisterButton.backgroundColor = UIColor.blue
        loginRegisterSegmentedControl.tintColor = UIColor.blue
        rotate(by: -2*π)
        // Roll to the left
    } else {
        self.loginRegisterButton.backgroundColor = UIColor.red
        loginRegisterSegmentedControl.tintColor = UIColor.red
        rotate(by: 2*π)
        // Roll to the right
    }

func rotateLeft() {
    UIView.animate(withDuration: 0.5, animations: {
        self.profileImageView.transform = CGAffineTransform(rotationAngle: ((180.0 * CGFloat(M_PI)) / 180.0) * -1)
        self.profileImageView.transform = CGAffineTransform(rotationAngle: ((0.0 * CGFloat(M_PI)) / 360.0) * -1)
        self.view.layoutIfNeeded()
    })
}

var viewAngle: CGFloat = 0    // Right-side up to start
let π = CGFloat.pi   // Swift allows special characters hold alt+p to use this, it allows for cleaner code

func rotate(by angle: CGFloat) {

    for i in 0 ..< 4 {
        UIView.animate(withDuration: 0.125, delay: 0.125 * Double(i), options: .curveLinear, animations: {

            self.viewAngle += angle/4
            self.rotateView.transform = CGAffineTransform(rotationAngle: self.viewAngle)
            self.view.layoutIfNeeded()
        }, completion: nil)
    }

}

rotate(by: π)

rotate(by: -π)

self.viewRoatate.transform = CGAffineTransform(rotationAngle:  CGFloat.pi / -2)
            self.viewRoatate.transform = CGAffineTransform(rotationAngle:  CGFloat.pi)