/// <summary>
/// Splits segmentToSplit in two based on iLocation.
/// First new segment will be added to diced, and second new segment will be returned.
/// If split doesn't happen, segmentToSplit will be returned.
/// </summary>
private static Segment SplitHelper(Segment segmentToSplit, Vector3D iLocation, Polygon diced, List <IntersectionPoint> iPoints)
{
List <Segment> split;
if (segmentToSplit.Split(iLocation, out split))
{
Debug.Assert(split.Count == 2);
diced.Segments.Add(split[0]);
IntersectionPoint iPoint = new IntersectionPoint();
iPoint.Location = iLocation;
iPoint.Index = diced.Segments.Count;
iPoints.Add(iPoint);
return(split[1]);
}
else
{
// We were presumably at an endpoint.
// Add to iPoints list only if it was the starting endpoint.
// (This will avoid duplicate entries).
if (iLocation.Compare(segmentToSplit.P1))
{
IntersectionPoint iPoint = new IntersectionPoint();
iPoint.Location = iLocation;
iPoint.Index = diced.Segments.Count;
iPoints.Add(iPoint);
}
return(segmentToSplit);
}
}
