internal static com.epl.geometry.Geometry PointMinusPolyline_(com.epl.geometry.Point point, com.epl.geometry.Polyline polyline, double tolerance, com.epl.geometry.ProgressTracker progress_tracker)
{
com.epl.geometry.Point2D pt = point.GetXY();
com.epl.geometry.SegmentIterator seg_iter = polyline.QuerySegmentIterator();
double tolerance_cluster = tolerance * System.Math.Sqrt(2.0) * 1.00001;
double tolerance_cluster_sq = tolerance_cluster * tolerance_cluster;
com.epl.geometry.Envelope2D env = new com.epl.geometry.Envelope2D();
while (seg_iter.NextPath())
{
while (seg_iter.HasNextSegment())
{
com.epl.geometry.Segment segment = seg_iter.NextSegment();
segment.QueryEnvelope2D(env);
env.Inflate(tolerance_cluster, tolerance_cluster);
if (!env.Contains(pt))
{
continue;
}
if (segment.IsIntersecting(pt, tolerance))
{
return(point.CreateInstance());
}
// check segment end points to the cluster tolerance
com.epl.geometry.Point2D end_point = segment.GetStartXY();
if (com.epl.geometry.Point2D.SqrDistance(pt, end_point) <= tolerance_cluster_sq)
{
return(point.CreateInstance());
}
end_point = segment.GetEndXY();
if (com.epl.geometry.Point2D.SqrDistance(pt, end_point) <= tolerance_cluster_sq)
{
return(point.CreateInstance());
}
}
}
return(point);
}