code: function () {
              var rx = this.radiusV.x,
                  ry = this.radiusV.y,
                  x = this.pos.x - rx,
                  y = this.pos.y - ry,
                  w = rx * 2,
                  h = ry * 2;
  
              if (!this._bounds) {
                  this._bounds = new me.Rect(x, y, w, h);
              }  else {
                  this._bounds.setShape(x, y, w, h);
              }
              return this._bounds;
          }
docs: update the bounding box for this shape.
  @name updateBounds
  @memberOf me.Ellipse.prototype
  @function
  @return {me.Rect} this shape bounding box Rectangle object