import UIKit
class ScaleTransitionAnimation: FSTransitionAnimationProtocol {

    var snapToView: UIView?
    
    var snapFromView: UIView?
	
    func setToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete: @escaping (() -> ())) {
        // 在这里完成你的进场动画  
    }
    
    func backToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete: @escaping (() -> ())) {
        // 在这里完成你的退场动画
    }
}

import UIKit

class ScaleTransitionAnimation: FSTransitionAnimationProtocol {
    func setToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete:@escaping (() -> ())) {
        guard let snapToView = snapToView else { return }
        guard let snapFromView = snapFromView else { return }
        containerView.addSubview(snapToView)
        containerView.addSubview(snapFromView)
        snapFromView.layer.transform = CATransform3DIdentity
        
        UIView.animate(withDuration: 0.6, animations: {
            snapFromView.layer.transform = CATransform3DMakeScale(0.1, 0.1, 1)
        }) { (finish) in
            animationComplete()
        }
    }
    
    func backToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete:@escaping (() -> ())) {
        guard let snapToView = snapToView else { return }
        guard let snapFromView = snapFromView else { return }
        containerView.addSubview(snapFromView)
        containerView.addSubview(snapToView)
        snapToView.layer.transform = CATransform3DMakeScale(0.1, 0.1, 1)
        UIView.animate(withDuration: 0.6, animations: {
            snapToView.layer.transform = CATransform3DIdentity
        }) { (finish) in
            animationComplete()
        }
    }
}

 @IBAction func onPushAnimation(_ sender: Any) {
        let animation = ScaleTransitionAnimation()
        let vc = ScaleSecondViewController.init(nibName: "ScaleSecondViewController", bundle: nil)
        self.fs_pushViewController(vc, animation: animation)
    }

override func viewDidLoad() {
        super.viewDidLoad()
        fs_registerToInteractiveTransition([.left]) {[weak self] in
            let animation = OpenDoorTranstionAnimation()
            let vc = OpenDoorSecondViewController.init(nibName: "OpenDoorSecondViewController", bundle: nil)
            self?.fs_pushViewController(vc, animation: animation)
        }
    }

class InteractiveViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        fs_registerBackInteractiveTransition([.right]) {
            self.navigationController?.popViewController(animated: true)
        }
    }
}

override func viewDidLoad() {
        super.viewDidLoad()
        fs_registerToInteractiveTransition([.leftOffset(view.frame.width / 2.0), .rightOffset(view.frame.width / 2.0)]) {
            let animation = OpenMiddleTranstionAnimation()
            let vc = OpenMiddleSecondViewController.init(nibName: "OpenMiddleSecondViewController", bundle: nil)
            self.fs_pushViewController(vc, animation: animation)
        }
    }

override func viewDidLoad() {
        super.viewDidLoad()
       fs_registerBackInteractiveTransition([.left, .right]) {
            self.navigationController?.popViewController(animated: true)
        }
    }