var orientation = Camera.getOrientation();
  orientation = Quat.safeEulerAngles(orientation);
  orientation.x = 0;
  orientation = Quat.fromVec3Degrees(orientation);
  var center = Vec3.sum(MyAvatar.position, Vec3.multiply(3, Quat.getFront(orientation)));

  var rotatingBox = Entities.addEntity({
      type: "Box",
      position: center,
      dimensions: {
          x: 1,
          y: 1,
          z: 1
      },
      color: {
          red: 200,
          green: 10,
          blue: 200
      },
      angularVelocity: {
          x: 0,
          y: 0.1,
          z: 0
      },
      angularDamping: 0
  });



  function cleanup() {
      Entities.deleteEntity(rotatingBox);
  }
  Script.scriptEnding.connect(cleanup);