}
this.arg[0].computeSelfNodes(this.li, false);
this.arg[1].computeSelfNodes(this.li, false);
// compute intersections between edges of the two input geometries
SegmentIntersector tIntersector =
this.arg[0].computeEdgeIntersections(this.arg[1], this.li, false);
this.computeIntersectionNodes(0);
this.computeIntersectionNodes(1);