/// <summary>
/// Defines the pyramid path
/// </summary>
/// <param name="y"></param>
/// <param name="height"></param>
/// <param name="explodedOffset"></param>
/// <param name="series"></param>
/// <param name="isExploded"></param>
public PyramidSegment(double y, double height, double explodedOffset, PyramidSeries series, bool isExploded)
{
base.Series = series;
this.y = y;
this.height = height;
this.isExploded = isExploded;
this.explodedOffset = explodedOffset;
}
private static void OnPyramidModeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PyramidSeries pyramidSeries = d as PyramidSeries;
if (pyramidSeries != null && pyramidSeries.Area != null)
{
pyramidSeries.Area.ScheduleUpdate();
}
}
/// <summary>
/// Updates the segments based on its data point value. This method is not
/// intended to be called explicitly outside the Chart but it can be overriden by
/// any derived class.
/// </summary>
/// <param name="transformer">Reresents the view port of chart control.(refer <see cref="IChartTransformer"/>)</param>
public override void Update(IChartTransformer transformer)
{
if (!this.IsSegmentVisible)
{
segmentPath.Visibility = Visibility.Collapsed;
}
else
{
segmentPath.Visibility = Visibility.Visible;
}
Rect rect = new Rect(0, 0, transformer.Viewport.Width, transformer.Viewport.Height);
PyramidSeries series = Series as PyramidSeries;
if (rect.IsEmpty)
{
this.segmentPath.Data = null;
}
else
{
if (this.isExploded)
{
rect.X += explodedOffset;
}
double top = y;
double bottom = y + height;
double topRadius = 0.5d * (1d - y);
double bottomRadius = 0.5d * (1d - bottom);
PathFigure figure = new PathFigure();
figure.StartPoint = new Point(rect.X + topRadius * rect.Width, rect.Y + top * rect.Height);
Linesegment lineSeg1 = new Linesegment();
lineSeg1.Point = new Point(rect.X + (1 - topRadius) * rect.Width, rect.Y + top * rect.Height);
figure.Segments.Add(lineSeg1);
Linesegment lineSeg3 = new Linesegment();
lineSeg3.Point = new Point(rect.X + (1 - bottomRadius) * rect.Width, rect.Y + bottom * rect.Height - series.StrokeThickness / 2);
figure.Segments.Add(lineSeg3);
Linesegment lineSeg4 = new Linesegment();
lineSeg4.Point = new Point(rect.X + bottomRadius * rect.Width, rect.Y + bottom * rect.Height - series.StrokeThickness / 2);
figure.Segments.Add(lineSeg4);
figure.IsClosed = true;
this.segmentGeometry = new PathGeometry();
this.segmentGeometry.Figures = new PathFigureCollection()
{
figure
};
segmentPath.Data = segmentGeometry;
height = ((bottom - top) * rect.Height) / 2;
}
}