title: Three.js camera, object and scene origin when moving object
body: <p>I can not figure out how to set the object to the three.js scene origin after having moved it. What happens is that I built a scene with an object at the origin and a camera pointing at it.
  I am using the mouse to move around the object in the scene.
  Then I try to reset the object position so that it goes back to the scene origin like that with the camera pointed at it:</p>
  
  <pre><code>camera.position.x = 10;
  camera.position.y = 10;
  camera.position.z = 10;
  camera.lookAt( scene.position );
  group.position.set(0, 0, 0);
  </code></pre>
  
  <p>I seems fine at first. But when I try to rotate the camera with the mouse around the object, the object shifts back to its previous position and the camera is not centered around it.</p>