/// <summary>
/// Updates the stroke rendering for empty points.
/// </summary>
private void UpdateEmptyPointSegments()
{
FastRangeAreaSegment previousEmptySegment = null;
for (int i = 0; i < Segments.Count; i++)
{
FastRangeAreaSegment segment = Segments[i] as FastRangeAreaSegment;
int count = segment.AreaValues.Count(value => !double.IsNaN(value.Y));
if (count > 1 && count == segment.AreaValues.Count)
{
if (previousEmptySegment == null)
{
segment.EmptyStroke = EmptyStroke.Right;
}
else if (previousEmptySegment.EmptyStroke == EmptyStroke.Right)
{
segment.EmptyStroke = EmptyStroke.Left;
}
else if (previousEmptySegment.EmptyStroke == EmptyStroke.Left)
{
previousEmptySegment.EmptyStroke = EmptyStroke.Both;
segment.EmptyStroke = EmptyStroke.Left;
}
previousEmptySegment = segment;
}
}
}
/// <summary>
/// Creates the segments of <see cref="FastRangeAreaBitmapSeries"/>.
/// </summary>
public override void CreateSegments()
{
ChartPoint point1;
ChartPoint point2;
ChartPoint point3;
ChartPoint point4;
ChartPoint? crossPoint = null;
List <ChartPoint> segPoints = new List <ChartPoint>();
List <double> xValues = null;
if (ActualXAxis is CategoryAxis && !(ActualXAxis as CategoryAxis).IsIndexed)
{
xValues = GroupedXValuesIndexes;
}
else
{
xValues = GetXValues();
}
if (xValues != null)
{
bool isGrouping = this.ActualXAxis is CategoryAxis ? (this.ActualXAxis as CategoryAxis).IsIndexed : true;
if (!isGrouping)
{
Segments.Clear();
Adornments.Clear();
if (double.IsNaN(GroupedSeriesYValues[1][0]) || !double.IsNaN(GroupedSeriesYValues[0][0]))
{
segPoints.Add(new ChartPoint(xValues[0], GroupedSeriesYValues[1][0]));
segPoints.Add(new ChartPoint(xValues[0], GroupedSeriesYValues[0][0]));
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = GroupedSeriesYValues[0][0],
Low = GroupedSeriesYValues[1][0],
Item = ActualData[0]
};
AddSegment(segment, segPoints);
}
segPoints = new List <ChartPoint>();
int i;
for (i = 0; i < xValues.Count - 1; i++)
{
if (!double.IsNaN(GroupedSeriesYValues[1][i]) && !double.IsNaN(GroupedSeriesYValues[0][i]))
{
point1 = new ChartPoint(xValues[i], GroupedSeriesYValues[1][i]);
point3 = new ChartPoint(xValues[i], GroupedSeriesYValues[0][i]);
if (i == 0 || (i < xValues.Count - 1 && (double.IsNaN(GroupedSeriesYValues[1][i - 1]) || double.IsNaN(GroupedSeriesYValues[0][i - 1]))))
{
segPoints.Add(point1);
segPoints.Add(point3);
}
if (!double.IsNaN(GroupedSeriesYValues[1][i + 1]) && !double.IsNaN(GroupedSeriesYValues[0][i + 1]))
{
point2 = new ChartPoint(xValues[i + 1], GroupedSeriesYValues[1][i + 1]);
point4 = new ChartPoint(xValues[i + 1], GroupedSeriesYValues[0][i + 1]);
// UWP-8718 Use ChartMath.GetCrossPoint since it returns the ChartDataPoint withou rounding the values.
crossPoint = ChartMath.GetCrossPoint(point1, point2, point3, point4);
if (crossPoint != null)
{
var crossPointValue = new ChartPoint(crossPoint.Value.X, crossPoint.Value.Y);
segPoints.Add(crossPointValue);
segPoints.Add(crossPointValue);
var segment = new FastRangeAreaSegment(segPoints, (GroupedSeriesYValues[1][i] > GroupedSeriesYValues[0][i]), this)
{
High = GroupedSeriesYValues[0][i],
Low = GroupedSeriesYValues[1][i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
segPoints = new List <ChartPoint>();
segPoints.Add(crossPointValue);
segPoints.Add(crossPointValue);
}
segPoints.Add(point2);
segPoints.Add(point4);
}
else if (i != 0 && !double.IsNaN(GroupedSeriesYValues[1][i - 1]) && !double.IsNaN(GroupedSeriesYValues[0][i - 1]))
{
segPoints.Add(point1);
segPoints.Add(point3);
}
}
else
{
if (segPoints.Count > 0)
{
if (!double.IsNaN(GroupedSeriesYValues[1][i - 1]) && !double.IsNaN(GroupedSeriesYValues[0][i - 1]))
{
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = GroupedSeriesYValues[0][i - 1],
Low = GroupedSeriesYValues[1][i - 1],
Item = ActualData[i - 1]
};
AddSegment(segment, segPoints);
}
}
segPoints = new List <ChartPoint>();
}
}
if (segPoints.Count > 0)
{
var segment = new FastRangeAreaSegment(segPoints, (GroupedSeriesYValues[1][i] > GroupedSeriesYValues[0][i]), this)
{
High = GroupedSeriesYValues[0][i],
Low = GroupedSeriesYValues[1][i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
}
else if (i == xValues.Count - 1 && (double.IsNaN(GroupedSeriesYValues[1][i]) || double.IsNaN(GroupedSeriesYValues[0][i])))
{
segPoints.Add(new ChartPoint(xValues[i], GroupedSeriesYValues[1][i]));
segPoints.Add(new ChartPoint(xValues[i], GroupedSeriesYValues[0][i]));
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = GroupedSeriesYValues[0][i],
Low = GroupedSeriesYValues[1][i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
}
for (int j = 0; j < xValues.Count; j++)
{
if (AdornmentsInfo != null)
{
AddAdornments(xValues[j], 0, GroupedSeriesYValues[0][j], GroupedSeriesYValues[1][j], j);
}
}
}
else
{
Segments.Clear();
if (AdornmentsInfo != null)
{
if (AdornmentsInfo.AdornmentsPosition == AdornmentsPosition.TopAndBottom)
{
ClearUnUsedAdornments(this.DataCount * 2);
}
else
{
ClearUnUsedAdornments(this.DataCount);
}
}
if (xValues != null)
{
if (double.IsNaN(LowValues[0]) || double.IsNaN(HighValues[0]))
{
segPoints.Add(new ChartPoint(xValues[0], LowValues[0]));
segPoints.Add(new ChartPoint(xValues[0], HighValues[0]));
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = HighValues[0],
Low = LowValues[0],
Item = ActualData[0]
};
AddSegment(segment, segPoints);
}
segPoints = new List <ChartPoint>();
int i;
for (i = 0; i < DataCount - 1; i++)
{
if (!double.IsNaN(LowValues[i]) && !double.IsNaN(HighValues[i]))
{
point1 = new ChartPoint(xValues[i], LowValues[i]);
point3 = new ChartPoint(xValues[i], HighValues[i]);
if (i == 0 || (i < DataCount - 1 && (double.IsNaN(LowValues[i - 1]) || double.IsNaN(HighValues[i - 1]))))
{
segPoints.Add(point1);
segPoints.Add(point3);
}
if (!double.IsNaN(LowValues[i + 1]) && !double.IsNaN(HighValues[i + 1]))
{
point2 = new ChartPoint(xValues[i + 1], LowValues[i + 1]);
point4 = new ChartPoint(xValues[i + 1], HighValues[i + 1]);
// UWP-8718 Use ChartMath.GetCrossPoint since it returns the ChartDataPoint withou rounding the values.
crossPoint = ChartMath.GetCrossPoint(point1, point2, point3, point4);
if (crossPoint != null)
{
var crossPointValue = new ChartPoint(crossPoint.Value.X, crossPoint.Value.Y);
segPoints.Add(crossPointValue);
segPoints.Add(crossPointValue);
var segment = new FastRangeAreaSegment(segPoints, (LowValues[i] > HighValues[i]), this)
{
High = HighValues[i],
Low = LowValues[i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
segPoints = new List <ChartPoint>();
segPoints.Add(crossPointValue);
segPoints.Add(crossPointValue);
}
segPoints.Add(point2);
segPoints.Add(point4);
}
}
else
{
if (segPoints.Count > 0)
{
if (!double.IsNaN(LowValues[i - 1]) && !double.IsNaN(HighValues[i - 1]))
{
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = HighValues[i - 1],
Low = LowValues[i - 1],
Item = ActualData[i - 1]
};
AddSegment(segment, segPoints);
}
}
segPoints = new List <ChartPoint>();
}
}
if (segPoints.Count > 0)
{
var segment = new FastRangeAreaSegment(segPoints, (LowValues[i] > HighValues[i]), this)
{
High = HighValues[i],
Low = LowValues[i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
}
else if (i == DataCount - 1 && (double.IsNaN(LowValues[i]) || double.IsNaN(HighValues[i])))
{
segPoints.Add(new ChartPoint(xValues[i], LowValues[i]));
segPoints.Add(new ChartPoint(xValues[i], HighValues[i]));
var segment = new FastRangeAreaSegment(segPoints, false, this)
{
High = HighValues[i],
Low = LowValues[i],
Item = ActualData[i]
};
AddSegment(segment, segPoints);
}
}
for (int i = 0; i < xValues.Count; i++)
{
if (AdornmentsInfo != null)
{
AddAdornments(xValues[i], 0, HighValues[i], LowValues[i], i);
}
}
}
}
// Updates the stroke rendering for empty points.
if (Segments.Count > 1)
{
UpdateEmptyPointSegments();
}
}
/// <summary>
/// Adds the created segment to the segment collection.
/// </summary>
/// <param name="segment">The segment to be added.</param>
/// <param name="segPoints">The segment values used to render the <see cref="FastRangeAreaSegment"/>.</param>
private void AddSegment(FastRangeAreaSegment segment, List <ChartPoint> segPoints)
{
segment.Series = this;
segment.SetData(segPoints);
Segments.Add(segment);
}