public void GetMaxAndMinYValue(StripChartXPlotArea plotArea, out double maxYValue, out double minYValue,
int seriesIndex)
{
maxYValue = double.NaN;
minYValue = double.NaN;
double tmpMaxYValue, tmpMinYValue;
if (seriesIndex <= -1)
{
AxisType yAxisType = PlotSeries[0].YAxisType;
// 所有的类型都相同则计算全局最大值
if (PlotSeries.All(item => item.YAxisType == yAxisType))
{
DataEntity.GetMaxAndMinYValue(out maxYValue, out minYValue);
}
else
{
maxYValue = double.MinValue;
minYValue = double.MaxValue;
for (int index = 0; index < PlotSeries.Count; index++)
{
if (PlotSeries[index].YAxisType != AxisType.Primary)
{
continue;
}
DataEntity.GetMaxAndMinYValue(index, out tmpMaxYValue, out tmpMinYValue);
if (tmpMaxYValue > maxYValue)
{
maxYValue = tmpMaxYValue;
}
if (tmpMinYValue < minYValue)
{
minYValue = tmpMinYValue;
}
}
if (Math.Abs(double.MaxValue - maxYValue) < Constants.MinDoubleValue)
{
maxYValue = double.NaN;
minYValue = double.NaN;
}
}
}
else
{
// 无论是副坐标轴还是主坐标轴，都给主坐标轴赋最大值
DataEntity.GetMaxAndMinYValue(seriesIndex, out maxYValue, out minYValue);
}
}
public void GetMaxAndMinY2Value(EasyChartXPlotArea plotArea, out double maxYValue, out double minYValue,
int seriesIndex)
{
maxYValue = double.NaN;
minYValue = double.NaN;
// 副坐标轴没有数据则返回
if (!HasSeriesInYAxis(plotArea, EasyChartXAxis.PlotAxis.Secondary))
{
return;
}
double tmpMaxYValue, tmpMinYValue;
if (seriesIndex <= -1)
{
maxYValue = double.MinValue;
minYValue = double.MaxValue;
int lineIndex;
for (int index = 0; index < PlotSeries.Count; index++)
{
if (PlotSeries[index].YAxisType != AxisType.Secondary)
{
continue;
}
DataEntity dataEntity = GetDataEntityBySeriesIndex(index, out lineIndex);
dataEntity.GetMaxAndMinYValue(out tmpMaxYValue, out tmpMinYValue, lineIndex);
if (tmpMaxYValue > maxYValue)
{
maxYValue = tmpMaxYValue;
}
if (tmpMinYValue < minYValue)
{
minYValue = tmpMinYValue;
}
}
if (Math.Abs(double.MaxValue - maxYValue) < Constants.MinDoubleValue)
{
maxYValue = double.NaN;
minYValue = double.NaN;
}
}
else
{
int lineIndex;
DataEntity dataEntity = GetDataEntityBySeriesIndex(seriesIndex, out lineIndex);
dataEntity.GetMaxAndMinYValue(out maxYValue, out minYValue, lineIndex);
}
}
