title: Flutter custom screen transition cut out scaled to whole second screen
body: <p>Does anyone know if a screen transition like the following is possible in flutter?  Please click on the image to see the transition.  As can be seen is it possible to show the next screen as a cut out on the first screen and then scale up the cut out till the user sees the whole second screen.  I am able to do this in iOS but I am new to Flutter so I am not sure if this is possible.  Any help would be greatly appreciated.  Thanks.</p>
  <p><a href="https://i.stack.imgur.com/XnK4o.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XnK4o.gif" alt="iPhone Screen Transition" /></a></p>