Custom Segue using Core Graphics transforms

add_party_segue.swift

//
//  AddPartySegue.swift
//  Our
//
//  Created by Eddie Koranek on 10/16/16.
//  Copyright © 2016 Eddie Koranek. All rights reserved.
//

import UIKit

class AddPartySegue: UIStoryboardSegue {
	override func perform() {
		guard let sourceVC = source as? ViewController else { return }
		guard let destinationVC = destination as? AddPartyViewController else { return }
		UIApplication.shared.keyWindow?.addSubview(destinationVC.view)
		
		destinationVC.dimmerView.alpha = 0.0
		destinationVC.blurView.alpha = 0.0
		
		
		destinationVC.hisToggle.transform = CGAffineTransform(translationX: -600, y: 0)
		destinationVC.ourToggle.transform = CGAffineTransform(translationX: -400, y: 0)
		destinationVC.herToggle.transform = CGAffineTransform(translationX: -200, y: 0)
		
		destinationVC.cancelButton.transform = CGAffineTransform(translationX: 500, y: 0)
		destinationVC.doneButton.transform = CGAffineTransform(translationX: 300, y: 0)
		
		destinationVC.mainContentCard.transform = CGAffineTransform(translationX: 0, y: 800)
		
		UIView.animate(withDuration: 0.4, animations: {
			
			destinationVC.dimmerView.alpha = 0.25
			destinationVC.blurView.alpha = 1.0
			}, completion: nil)
		
		UIView.animate(withDuration: 0.4, delay: 0.0, usingSpringWithDamping: 0.75, initialSpringVelocity: 0.8, options: UIViewAnimationOptions.allowUserInteraction, animations: {
			destinationVC.mainContentCard.transform = CGAffineTransform.identity
		}, completion: nil)
		
		UIView.animate(withDuration: 0.8, delay: 0.0, usingSpringWithDamping: 0.70, initialSpringVelocity: 1.0, options: UIViewAnimationOptions.allowUserInteraction, animations: {
			destinationVC.hisToggle.transform = CGAffineTransform.identity
			destinationVC.ourToggle.transform = CGAffineTransform.identity
			destinationVC.herToggle.transform = CGAffineTransform.identity
			
			destinationVC.cancelButton.transform = CGAffineTransform.identity
			destinationVC.doneButton.transform = CGAffineTransform.identity
		}, completion: nil)
		
		defer {
			sourceVC.present(destination, animated: false, completion: nil)
		}
	}
}