crop Photo using tool in iphone
<p>I need to create a crop tool  as iPhone default crop tool in Photos app.  Is there any open source to implement this crop feature?. Can any one give suggestion to starting point.</p>

<p><a href="http://i.stack.imgur.com/31KCY.png" rel="nofollow">http://i.stack.imgur.com/31KCY.png</a></p>
