title: Three.js Object rotation
body: <p>I'm a French developper so sorry for my English.</p>
  
  <p>I need to place some objects on a ground and user can rotate and move them. I've made a function that permit to mirror objects on the field. For this I had to rotate mirrored objects to fit the function and I saw that some of my objects, which I had designed with Solidworks then exported as STL then as OBJ and finally exported with convert_obj_three.py, don't rotate by there center (gravity center).</p>
  
  <p>So, how can I make this work? You can see this code running at <a href="http://spyshare.fr/three" rel="nofollow">http://spyshare.fr/three</a>. Try to add a "MiniM" by right click on the scene and rotate it with 'R' key.</p>
  
  <p>Thanks for the great work ;).</p>