private void CreateHighlightEffect(double x, double y)
{
Point?point = _voronoi.NearestSitePoint(x, y);
if (point.HasValue)
{
List <LineSegment> boundaries = _voronoi.VoronoiBoundaryForSite(point.Value);
IEnumerable <Line> lines = ShapeSegments.Where(segment => segment is Line).Cast <Line>();
}
}
private void CreateVoronoiDiagram()
{
double width = Application.Current.MainWindow.Width;
double height = Application.Current.MainWindow.Height;
List <Color> colors = ColorUtils.GenerateRandomColors(MaxPoints);
List <Point> points = CreateRandomPoints(width, height);
_voronoi = new Voronoi(points, colors, new Rect(0, 0, width, height));
foreach (LineSegment lineSegment in _voronoi.VoronoiDiagram())
{
if (!lineSegment.P0.HasValue || !lineSegment.P1.HasValue)
{
continue;
}
ShapeSegments.Add(new Line
{
X1 = lineSegment.P0.Value.X,
X2 = lineSegment.P1.Value.X,
Y1 = lineSegment.P0.Value.Y,
Y2 = lineSegment.P1.Value.Y,
Stroke = new SolidColorBrush(Colors.Black),
StrokeThickness = 1
});
}
int index = 0;
foreach (List <Point> point in _voronoi.Regions())
{
Polygon polygon = new Polygon
{
Stroke = new SolidColorBrush(Colors.Black),
StrokeThickness = 1,
Fill = new SolidColorBrush(colors[index % colors.Count]),
Points = new PointCollection(point)
};
ShapeSegments.Add(polygon);
index++;
}
foreach (LineSegment lineSegment in _voronoi.DelaunayTriangulation())
{
if (!lineSegment.P0.HasValue || !lineSegment.P1.HasValue)
{
continue;
}
ShapeSegments.Add(new Line
{
X1 = lineSegment.P0.Value.X,
X2 = lineSegment.P1.Value.X,
Y1 = lineSegment.P0.Value.Y,
Y2 = lineSegment.P1.Value.Y,
Stroke = new SolidColorBrush(Colors.Azure),
StrokeThickness = 1
});
}
foreach (Point point in points)
{
var ellipse = new Ellipse
{
Stroke = new SolidColorBrush(Colors.OrangeRed),
StrokeThickness = 5
};
Canvas.SetLeft(ellipse, point.X - ellipse.StrokeThickness / 2);
Canvas.SetTop(ellipse, point.Y - ellipse.StrokeThickness / 2);
ShapeSegments.Add(ellipse);
}
}
