code: function() {
          var xUpdated = this._xSpring.update();
          var yUpdated = this._ySpring.update();
          var scaleUpdated = this._scaleSpring.update();
          var degreesUpdated = this._degreesSpring.update();
  
          if (xUpdated || yUpdated || scaleUpdated || degreesUpdated) {
              this._updateForScale();
              this._needsDraw = true;
              return true;
          }
  
          return false;
      }
docs: Updates the TiledImage's bounds, animating if needed.
  @returns {Boolean} Whether the TiledImage animated.