public static List <Point> PointLayout(this PerimeterLayout layout2D, IEnumerable <ICurve> hostRegionCurves, IEnumerable <ICurve> openingCurves = null)
{
List <ICurve> regionCurveList = hostRegionCurves.ToList();
List <int> divs = new List <int>();
if (regionCurveList.Count == 1)
{
divs.Add(layout2D.NumberOfPoints);
}
else
{
divs = DistributeDivisions(regionCurveList, layout2D.NumberOfPoints);
}
List <Point> result = new List <Point>();
for (int j = 0; j < regionCurveList.Count; j++)
{
ICurve regionCurve = regionCurveList[j];
int curveDivs = divs[j];
List <ICurve> subCurves = regionCurve.ISubParts().ToList();
if (layout2D.EnforceDiscontinuityPoints && subCurves.Count != 1)
{
List <Point> pts = regionCurve.IDiscontinuityPoints();
pts.Add(regionCurve.IStartPoint());
pts.Add(regionCurve.IEndPoint());
pts = pts.CullDuplicates();
int remainingPoints = curveDivs - pts.Count;
if (remainingPoints > 0)
{
List <int> divisions = DistributeDivisions(subCurves, remainingPoints);
for (int i = 0; i < subCurves.Count; i++)
{
if (divisions[i] == 0)
{
continue;
}
//Sample points always includes start and end (which are removed later) and gives back 1 more point than divisions.
//To make sure point(s) on the middle of the are extracted, division is increased by 1, which should return 2 more points than divisions asked for.
int div = divisions[i] + 1;
List <Point> subPts = subCurves[i].SamplePoints(div);
//Remove points at start/end
subPts.RemoveAt(subPts.Count - 1);
subPts.RemoveAt(0);
pts.AddRange(subPts);
}
}
int count = pts.Count;
pts = pts.ISortAlongCurve(regionCurve);
//SortAlongCurve might add extra points, generally duplicate of start and end point for closed curves.
if (pts.Count == count + 1 && pts[0].Distance(pts[pts.Count - 1]) < Tolerance.Distance)
{
pts.RemoveAt(pts.Count - 1);
}
else if (pts.Count > count)
{
pts = pts.CullDuplicates();
}
result.AddRange(pts);
}
else
{
if (curveDivs == 0)
{
continue;
}
if (curveDivs == 1)
{
result.Add(regionCurve.IPointAtParameter(0.5));
}
else
{
int divisions = curveDivs;
bool closed = regionCurve.IIsClosed();
if (!closed)
{
divisions--;
}
List <Point> pts = regionCurve.SamplePoints(divisions);
//Remove duplicate endpoint
if (closed)
{
pts.RemoveAt(pts.Count - 1);
}
result.AddRange(pts);
}
}
}
return(result);
}
/***************************************************/
private static int LayoutCount(PerimeterLayout layout)
{
return(layout.NumberOfPoints);
}
