Build Tinder app like card animation with swift 4+

TinderLikeAnimation.swift

//
//  TinderLikeAnimation.swift
//
//  Created by Coder ACJHP on 2.05.2019.
//  Copyright © 2019 Onur Işık All rights reserved.
//

import UIKit

class TinderLikeAnimation: UIViewController {

    private let cardView: UIView = {
        let cardView = UIView()
        cardView.backgroundColor = .cyan
        return cardView
    }()
    
    private let label: UILabel = {
       let label = UILabel(frame: .zero)
        label.textColor = .white
        label.text = "Swipe \n⇜ left or right ⇝"
        label.font = .boldSystemFont(ofSize: 22)
        label.textAlignment = .center
        label.numberOfLines = 0
        return label
    }()
    
    private var initialCardCenter: CGPoint!
    
    private lazy var divisor: CGFloat = {
        return (view.frame.width / 2) / 0.70
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()

       view.backgroundColor = .purple
        
        addLabel()
        
        addCardView()
    }
    
    private func addLabel() {
        
        view.addSubview(label)
        label.anchor(top: view.topAnchor,
                     leading: view.leadingAnchor,
                     bottom: nil,
                     trailing: view.trailingAnchor,
                     padding: .init(top: 30, left: 70, bottom: 0, right: 70))
    }
    
    private func addCardView() {
        
        view.addSubview(cardView)
        cardView.centerAnchor(to: view,
                              withSize: .init(width: view.bounds.width - 120,
                                              height: view.bounds.height - 200))
        
        let panGesture = UIPanGestureRecognizer(target: self, action: #selector(handlePan(_:)))
        cardView.addGestureRecognizer(panGesture)
    }
    
    @objc private func handlePan(_ gestureRecognizer: UIPanGestureRecognizer) {
        
        guard let cardView = gestureRecognizer.view else { return }
        let translation = gestureRecognizer.translation(in: view)
        
        switch gestureRecognizer.state {
        case .began:
            initialCardCenter = cardView.center
        case .changed:
            cardView.center = CGPoint(x: initialCardCenter.x + translation.x, y: initialCardCenter.y)
            let xFactor = cardView.center.x - view.center.x
            let radius: CGFloat = xFactor / divisor
            cardView.transform = CGAffineTransform(rotationAngle: radius)
            let cardSwipeDirection = abs(xFactor) / view.center.x
            let opacity: CGFloat = 1.0 - cardSwipeDirection
            cardView.alpha = opacity
        case .ended:
            UIView.animate(withDuration: 0.75,
                           delay: 0,
                           usingSpringWithDamping: 0.6,
                           initialSpringVelocity: 4.0,
                           options: [],
                           animations: {
                            cardView.center = self.view.center
                            cardView.alpha = 1.0
                            cardView.transform = .identity
            }, completion: nil)
        default: break
        }
    }

}