title: Can we crop an image with point and size in Flutter?
body: <p>I'm writing a face detect app and I want to crop the face that have detected on screen with the bounding box of that face.</p>
  
  <p>I have searched all the way but only can crop with width height and aspect ratio.</p>
  
  <p>I don't want to crop manual like other image crop plugin because they also crop with width height and aspect ratio as well.</p>