private void GenerateDataPoints(IDictionary<string, double> data, Range dataRange)
{
int count = data.Count;
// Project the data in order to get the points in percent of the drawing space (rectangle 1*1)
var points = data.Select((kvp, ind) => new { x = (2.0 * ind + 1.0) / (2.0 * count), y = 1.0 - dataRange.Fraction(kvp.Value)});
// Generate the lines from point to point
var firstPoint = points.First();
PathFigure pathFigure = new PathFigure { IsClosed = false, StartPoint = new Point(firstPoint.x, firstPoint.y) };
foreach (var point in points.Skip(1))
{
pathFigure.Segments.Add(new LineSegment {Point = new Point(point.x, point.y)});
}
//Add these two empty line segments to force the drawing to stretch properly
PathFigure pathFigure2 = new PathFigure { StartPoint = new Point(0, 0) };
pathFigure2.Segments.Add(new LineSegment { Point = new Point(0, 0) });
PathFigure pathFigure3 = new PathFigure { StartPoint = new Point(1, 1) };
pathFigure3.Segments.Add(new LineSegment { Point = new Point(1, 1) });
PathGeometry pathGeometry = new PathGeometry();
pathGeometry.Figures.Add(pathFigure2);
pathGeometry.Figures.Add(pathFigure3);
pathGeometry.Figures.Add(pathFigure);
Path path = new Path
{
Stretch = Stretch.Fill, // stretch the polyline to fill the chart drawing space
Stroke = GetColorByIndex(0),
StrokeThickness = 2,
StrokeLineJoin = PenLineJoin.Round,
Data = pathGeometry,
Margin = new Thickness(-1,-1,-1,-1) // half of strokeThickness
};
_series.Children.Add(path);
// Add a new grid for the points
Grid pointsGrid = new Grid();
_series.Children.Add(pointsGrid);
// Generate the points
foreach (var kvp in data)
{
GenerateDataPoint(pointsGrid, kvp, dataRange);
}
}
