Repo created

iphone/Maps/UI/BottomMenu/Presentation/BottomMenuTransitioning.swift

@@ -0,0 +1,35 @@
+final class BottomMenuTransitioning: NSObject, UIViewControllerAnimatedTransitioning {
+  private let isPresentation: Bool
+  
+  init(isPresentation: Bool) {
+    self.isPresentation = isPresentation
+    super.init()
+  }
+  
+  func transitionDuration(using _: UIViewControllerContextTransitioning?) -> TimeInterval {
+    return kDefaultAnimationDuration
+  }
+  
+  func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+    guard let fromVC = transitionContext.viewController(forKey: .from),
+      let toVC = transitionContext.viewController(forKey: .to) else { return }
+    
+    let animatingVC = isPresentation ? toVC : fromVC
+    guard let animatingView = animatingVC.view else { return }
+    
+    let finalFrameForVC = transitionContext.finalFrame(for: animatingVC)
+    var initialFrameForVC = finalFrameForVC
+    initialFrameForVC.origin.y += initialFrameForVC.size.height
+    
+    let initialFrame = isPresentation ? initialFrameForVC : finalFrameForVC
+    let finalFrame = isPresentation ? finalFrameForVC : initialFrameForVC
+    
+    animatingView.frame = initialFrame
+    
+    UIView.animate(withDuration: transitionDuration(using: transitionContext),
+                   animations: { animatingView.frame = finalFrame },
+                   completion: { _ in
+                    transitionContext.completeTransition(true)
+    })
+  }
+}