docs: function(ccdbr) {
          var pos = this._cbr || this._mbr || this,
              dx = this._dx,
              dy = this._dy,
              ccdX = 0,
              ccdY = 0,
              ccdW = dx > 0 ? (ccdX = dx) : -dx,
              ccdH = dy > 0 ? (ccdY = dy) : -dy;
  
          ccdbr = ccdbr || {};
          ccdbr._x = pos._x - ccdX;
          ccdbr._y = pos._y - ccdY;
          ccdbr._w = pos._w + ccdW;
          ccdbr._h = pos._h + ccdH;
  
          return ccdbr;
      }