title: How do I make a circular border with Flutter's PhysicalModel?
body: <p>I'm trying to make a circular border within a PhysicalModel. It works if I don't wrap my widget in a PhysicalModel, but once I do, I get a square-ish border.</p>
  
  <pre><code>new PhysicalModel(
    color: Colors.green,
    child: new Container(
      width: 50.0,
      height: 50.0,
      decoration: new BoxDecoration(
        borderRadius: new BorderRadius.circular(25.0),
        border: new Border.all(
          width: 5.0,
          color: Colors.red,
        ),
      ),
    ),
  ),
  </code></pre>