code: function (x1, y1, x2, y2) {
  		var polygons = this.polygons;
  		for (var i = 0, n = polygons.length; i < n; i++)
  			if (polygons[i].intersectsSegment(x1, y1, x2, y2)) return this.boundingBoxes[i];
  		return null;
  	}
docs: Returns the first bounding box attachment that contains the line segment, or null. When doing many checks, it is usually
  more efficient to only call this method if {@link #aabbIntersectsSegment(float, float, float, float)} returns true.