         maskLayer.addAnimation(maskLayerAnimation, forKey: "path")
 
 
-
         if let transitionView = transitionView {
             animatingView.addSubview(transitionView)
             transitionView.frame = frame

        }
    }

    func presentTransition(transitionContext: UIViewControllerContextTransitioning) {
        let fromVC = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey) as? ConversationsViewController
        let toVC = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey) as? MessageMediaViewController

                })

                UIView.addKeyframeWithRelativeStartTime(0.9, relativeDuration: 0.0, animations: { () -> Void in
                    let ratio = (animatingView.bounds.width + self.largerOffset) / animatingView.bounds.width
                    toVC?.mediaView.transform = CGAffineTransformMakeScale(ratio, ratio)
                    toVC?.mediaView.alpha = 1
                    transitionView.alpha = 0
