public void AddEvents(LineSegment segment, List <IntersectionSweepEvent> events)
{
Vector2 point1 = segment.Point1;
Vector2 point2 = segment.Point2;
var ev1 = new IntersectionSweepEvent(point1, false, false, segment, null as IntersectionSweepEvent);
var ev2 = new IntersectionSweepEvent(point2, false, false, segment, ev1);
ev1.OtherEvent = ev2;
if (point1.Equals(point2))
{
return;
}
if (ev1.CompareTo(ev2) < 1)
{
ev1.IsStart = true;
ev2.IsEnd = true;
}
else
{
ev1.IsEnd = true;
ev2.IsStart = true;
}
events.Add(ev1);
events.Add(ev2);
}
public int CompareTo(IntersectionStatusItem other)
{
if (Equals(other))
{
return(0);
}
IntersectionSweepEvent ev = SweepEvent;
IntersectionSweepEvent otherEv = other.SweepEvent;
if (ev.Equals(otherEv))
{
return(0);
}
if (MathUtil.SignedArea(ev.Point, ev.OtherEvent.Point, otherEv.Point) != 0 ||
MathUtil.SignedArea(ev.Point, ev.OtherEvent.Point, otherEv.OtherEvent.Point) != 0)
{
if (ev.Point.Equals(otherEv.Point))
{
return(ev.Below(otherEv.OtherEvent.Point) ? -1 : 1);
}
if (ev.Point.x.Equals(otherEv.Point.x))
{
return(ev.Point.y < otherEv.Point.y ? -1 : 1);
}
if (ev.CompareTo(otherEv) == 1)
{
return(!otherEv.Below(ev.Point) ? -1 : 1);
}
return(ev.Below(otherEv.Point) ? -1 : 1);
}
if (ev.Point.Equals(otherEv.Point) && ev.OtherEvent.Point.Equals(otherEv.OtherEvent.Point))
{
return(0);
}
return(ev.CompareTo(otherEv) == 1 ? 1 : -1);
}
