public override void DrawSeries()
{
if (ItemSource.Count == 0)
return;
double XStep = (this.Container.ActualWidth - Margin) / ItemSource.Count + 1;
double CurrentStep = 1;
double YMaxValue = 0;
foreach (DataItem item in ItemSource)
{
if (item.Value > YMaxValue)
YMaxValue = item.Value;
}
double YStep = (Container.ActualHeight - Margin) / YMaxValue;
Point prevPoint;
bool FirstPoint = true;
foreach (DataItem item in ItemSource)
{
LineDataPoint DataPoint = new LineDataPoint()
{
CircleRadius = Radius*2,
Palette = Palette,
FillPoint = false,
StrockThickness = LineThickness
};
DataPoint.Margin = new Thickness(CurrentStep * XStep, 0, 0, YStep * item.Value);
DataPoint.VerticalAlignment = Windows.UI.Xaml.VerticalAlignment.Bottom;
DataPoint.HorizontalAlignment = Windows.UI.Xaml.HorizontalAlignment.Left;
Container.Children.Add(DataPoint);
if (FirstPoint)
{
prevPoint = getLinePlottingPoint(DataPoint);
FirstPoint = false;
}
else
{
prevPoint = DrawLine(Container, Palette, LineThickness, prevPoint, DataPoint);
}
CurrentStep++;
}
}
private Point DrawLine(Grid container, Brush Palette, double linethickness, Point prevPoint, LineDataPoint DataPoint)
{
Point Current = getLinePlottingPoint(DataPoint);
Point[] LinePoints = Utilities.GetLinePointsOnCircle(prevPoint, Current, DataPoint.CircleRadius);
PathFigure path = new PathFigure();
path.StartPoint = LinePoints[0];
path.IsClosed = false;
LineSegment Line = new LineSegment();
Line.Point = LinePoints[1];
path.Segments.Add(Line);
PathGeometry myPath = new PathGeometry();
myPath.Figures.Add(path);
Path output = new Path();
output.Data = myPath;
output.StrokeThickness = linethickness;
output.Stroke = Palette;
container.Children.Add(output);
prevPoint = Current;
return prevPoint;
}
private Point getLinePlottingPoint(LineDataPoint dataPoint)
{
double x = dataPoint.Margin.Left + (dataPoint.CircleRadius / 2);
double y = this.Container.ActualHeight - (dataPoint.Margin.Bottom + (dataPoint.CircleRadius / 2));
return new Point(x, y);
}
