TrailCrossing TrailCrossingFor(Puff p1, Puff q1)
{
TrailCrossing trailCrossing = null;
// Check if a trail crossing already exists for this segment crossing
if (segmentCrossings.ContainsKey(p1.Index - 1))
{
if (Math.Abs(segmentCrossings[p1.Index - 1].Index2 - q1.Index) <= 1)
{
trailCrossing = segmentCrossings[p1.Index - 1].TrailCrossing;
}
}
if (segmentCrossings.ContainsKey(q1.Index - 1))
{
if (Math.Abs(segmentCrossings[q1.Index - 1].Index1 - p1.Index) <= 1)
{
if (trailCrossing != null)
{
Debug.Assert(segmentCrossings[q1.Index - 1].TrailCrossing == trailCrossing);
}
else
{
trailCrossing = segmentCrossings[q1.Index - 1].TrailCrossing;
}
}
}
if (trailCrossing == null)
{
trailCrossing = new TrailCrossing(++crossingCount);
trailCrossings.Add(trailCrossing);
}
return(trailCrossing);
}
public SegmentCrossing(int index1, int index2, TrailCrossing trailCrossing)
{
Index1 = index1;
Index2 = index2;
TrailCrossing = trailCrossing;
}
