title: Collision Between 3d and 2D Objects AS3
body: <p>I'm working on a augmented reality project using FLARtoolkit that need a collision between 3D between 2D objects in AS3. Im using papervision3d and away3d for 3d engine,
  My 2d object is a circle and my 3d object is 3d model. </p>
  
  <p>I have try different methods, but to no avail.
  Those methods are</p>
  
  <ol>
  <li>Using hitTestObject() on 3d model. Result = impilcit coercion</li>
  <li>Using hitTestPoint() on 3d model. Result = cant get the correct model coordinate</li>
  </ol>
  
  <p>I can't get the correct coordinate because the base of coordinate of my model is from marker, and the base of coordinate of my circle is from stage.</p>
  
  <p>Oh yeah, and i try to make a 2D box with same position with my model for collision.
  But the coordinate never get right.</p>
  
  <p>Anyone can point me out ways to do collision between 2 different objects in different coordinate ?
  Color tracking or anything ?
  I appreciate any response, thank you.</p>