title: Three js Trackball controls - manual rotation
body: <p>I'm having problems with trackballControls in three.js.  I'd like to rotate and position the camera manually. Here's the test function.</p>
  
  <pre><code>function rotateTest(){
      console.log(camera.rotation) // THREE.Euler {_x: 0, _y: 0.7853981462831776, _z: 0, _order: "XYZ", onChangeCallback: function…}
  
      camera.rotateZ(1);
      console.log(camera.rotation) // THREE.Euler {_x: 7.850462316470535e-17, _y: 0.7853981462831774, _z: 1, _order: "XYZ", onChangeCallback: function…} 
  }
  </code></pre>
  
  <p>The objects rotation appears to be altered but no change is actually seen. Could someone please help me out.</p>
  
  <p>Thanks,</p>