public List <Edge> FindIntersection(IEnumerable <Edge> edges)
{
intersected = null;
var sweepLine = new SweepLine <IntersectionSweepEvent, IntersectionStatusItem>();
List <LineSegment> segments = CreateSegments(edges);
IEnumerable <E> events = CreateEvents(segments) as IEnumerable <E>;
sweepLine.InitializeEvents(events);
sweepLine.VerticalSweep(HandleEvent);
return(intersected);
}
