title: fabric.js Offset Solution
body: <p>In dealing with offset with fabric.js - what is the best approach?</p>
  
  <p>I'm basically allowing a user to draw a box, and I want to make sure I have the box drawn at the exact start and ending coordinates of the dragging action.</p>
  
  <p><a href="http://jsfiddle.net/mojo5000/P7gAC/4/" rel="nofollow">http://jsfiddle.net/mojo5000/P7gAC/4/</a></p>
  
  <pre><code>...
      left: x + width/2 - 8, 
      top: y + height/2 - 8, 
  ...
  </code></pre>
  
  <p>I basically had to a little rigging with the left and top values.  It seems to work.  Is there a better way to do this?</p>