static void Main(string[] args)
{
VoronoiMain.main(new Point[] { new Point(-1, -1), new Point(1, -1)
, new Point(-1, 1), new Point(1, 1) });
Console.ReadLine();
}
protected override void OnRender(DrawingContext drawingContext)
{
base.OnRender(drawingContext);
var dc = drawingContext;
if (plotter == null)
{
return;
}
if (Points == null)
{
return;
}
var transform = plotter.Transform;
VoronoiMain.main(Points);
var lines = Output.LineCollection.OrderBy(line => line.EdgeNumber).ToArray();
var vertices = Output.VertexCollection.OrderBy(vertex => vertex.SiteNumber).ToArray();
var endPoints = Output.EndPointCollection.OrderBy(edge => edge.edgeNumber).ToArray();
Pen linePen = new Pen(Brushes.Black, 1);
var segments = new List <Segment>();
for (int i = 0; i < endPoints.Length; i++)
{
var endPoint = endPoints[i];
var vertexId = endPoint.edgeNumber;
var line = lines[vertexId];
var leftId = endPoint.EndPoints[0] != null ? endPoint.EndPoints[0].SiteNumber : -1;
var rightId = endPoint.EndPoints[1] != null ? endPoint.EndPoints[1].SiteNumber : -1;
Point pLeft = new Point();
Point pRight = new Point();
// at least one endPointId will be != -1
if (rightId == -1)
{
pLeft = GetSegmentCoordinate(vertices, line, leftId, new Point());
pRight = GetSegmentCoordinate(vertices, line, rightId, pLeft);
segments.Add(new Segment {
Start = pLeft, End = pRight, InfinityPoint = InfinityPoint.End, Site1 = line.Site1, Site2 = line.Site2
});
}
else if (leftId == -1)
{
pRight = GetSegmentCoordinate(vertices, line, rightId, new Point());
pLeft = GetSegmentCoordinate(vertices, line, leftId, pRight);
segments.Add(new Segment {
Start = pRight, End = pLeft, InfinityPoint = InfinityPoint.End, Site1 = line.Site1, Site2 = line.Site2
});
}
else // leftId != -1 && rightId != -1
{
pLeft = GetSegmentCoordinate(vertices, line, leftId, new Point());
pRight = GetSegmentCoordinate(vertices, line, rightId, pLeft);
segments.Add(new Segment {
Start = pLeft, End = pRight, InfinityPoint = InfinityPoint.None, Site1 = line.Site1, Site2 = line.Site2
});
}
pLeft = pLeft.DataToScreen(transform);
pRight = pRight.DataToScreen(transform);
dc.DrawLine(linePen, pLeft, pRight);
}
var pointsSequences = GetPointsSequences(segments);
foreach (var sequence in pointsSequences)
{
var pathFigure = new PathFigure {
IsClosed = true, IsFilled = true
};
pathFigure.StartPoint = sequence.Points.First().DataToScreen(transform);
pathFigure.Segments.Add(new PolyLineSegment(sequence.Points.Skip(1).DataToScreen(transform), false));
PathGeometry geometry = new PathGeometry();
geometry.Figures.Add(pathFigure);
if (!brushes.ContainsKey(sequence.Site))
{
brushes[sequence.Site] = ColorHelper.RandomBrush.MakeTransparent(0.5);
}
dc.DrawGeometry(brushes[sequence.Site], null, geometry);
}
}
