protected override IEnumerable <Point> GetPoints(DataPointSegment segment)
{
AxisPlotDirection plotDirection = this.model.GetTypedValue <AxisPlotDirection>(AxisModel.PlotDirectionPropertyKey, AxisPlotDirection.Vertical);
ReferenceDictionary <string, Delegate> valueExtractor = plotDirection == AxisPlotDirection.Vertical ? VerticalPlotValueExtractors : HorizontalPlotValueExtractors;
foreach (Point point in StepSeriesHelper.GetPoints(segment, this.model as StepSeriesModel, this.renderPoints, valueExtractor))
{
yield return(point);
}
}
internal static IEnumerable <Point> GetPoints(DataPointSegment segment, StepSeriesModel seriesModel, IList <DataPoint> renderPoints, ReferenceDictionary <string, Delegate> valueExtractor)
{
AxisPlotDirection plotDirection = seriesModel.GetTypedValue <AxisPlotDirection>(AxisModel.PlotDirectionPropertyKey, AxisPlotDirection.Vertical);
AxisModel axisModel = plotDirection == AxisPlotDirection.Vertical ? seriesModel.firstAxis : seriesModel.secondAxis;
var risersActualPosition = StepSeriesHelper.GetActualRisersPosition(seriesModel.RisersPosition, axisModel.ActualPlotMode);
var isRisersPositionEqualToPlotMode = StepSeriesHelper.IsRisersPositionEqualToPlotMode(axisModel.ActualPlotMode, risersActualPosition);
var view = seriesModel.GetChartArea().view;
Size chartScale = new Size(view.ZoomWidth, view.ZoomHeight);
double slotLength = StepSeriesHelper.GetSlotLength(seriesModel, plotDirection, chartScale);
double halfSlotLength = slotLength / 2;
Func <Point, Point, Point> riserPointGetter = (Func <Point, Point, Point>)valueExtractor[RiserPointGetter];
Func <Point, Point, double, Point> firstRiserPointGetter = (Func <Point, Point, double, Point>)valueExtractor[FirstRiserPointGetter];
Func <Point, Point, double, Point> secondRiserPointGetter = (Func <Point, Point, double, Point>)valueExtractor[SecondRiserPointGetter];
int pointIndex = segment.StartIndex;
while (pointIndex <= segment.EndIndex)
{
var currentPoint = renderPoints[pointIndex].Center();
yield return(currentPoint);
if (pointIndex == segment.EndIndex)
{
yield break;
}
var nextPoint = renderPoints[pointIndex + 1].Center();
if (isRisersPositionEqualToPlotMode || axisModel is DateTimeContinuousAxisModel)
{
yield return(riserPointGetter(currentPoint, nextPoint));
}
else
{
yield return(firstRiserPointGetter(currentPoint, nextPoint, halfSlotLength));
yield return(secondRiserPointGetter(currentPoint, nextPoint, halfSlotLength));
}
pointIndex++;
}
}