let testView = UIView()

        testView.frame = CGRect.init(x: , y: , width: , height: )

        self.view.addSubview(testView)

        testView.backgroundColor = UIColor.red

        var trans = CATransform3DIdentity

        trans.m34 = -1.0 /

        trans = CATransform3DRotate(trans, CGFloat.pi / , , , )

        UIView.animate(withDuration: , animations: {

            testView.layer.transform = trans

        }) { (finish) in

            UIView.animate(withDuration: , animations: {

                testView.layer.transform = CATransform3DIdentity

            })

        }