code: function _getAngleAxis(quaternion) {
    return function() {
      var sqrt = Math.sqrt(1 - quaternion.w * quaternion.w);
      return {
        axis: new Vector3(quaternion.x / sqrt, quaternion.y / sqrt, quaternion.z / sqrt),
        angle: 2 * Math.acos(quaternion.w) * radToDeg
      };
    }
  }
docs: Returns the angle axis representation for the quaternion with angle in degrees
  
  @param {Quternion} quaternion
  @returns {Object} angleAxis: {axis:_Vector3_, angle:_}