private double GetAxis(IChartItem item, bool x, double axisSize)
{
if (this._axisData == null)
{
return(double.NaN);
}
object obj = ChartHelper.GetChartItemAxisValue(item, x);
if (item == null)
{
return(double.NaN);
}
double value = ChartHelper.ConvertToDouble(obj);
if (!ChartHelper.DoubleHasValue(value))
{
return(double.NaN);
}
double result = axisSize * (value - this._axisData.MinValue) / this._axisData.Area;
if (base.Orientation == AxisLabelOrientation.BottomToTop ||
base.Orientation == AxisLabelOrientation.RightToLeft)
{
result = axisSize - result;
}
return(result);
}
private void GetCollectionMinAndMax(object obj, ref double pre, ref double min, ref double max)
{
double tmp, tmpTotalChild;
IEnumerable enumerable = (IEnumerable)obj;
tmpTotalChild = double.NaN;
foreach (var item in enumerable)
{
if (item == null || !(item is IChartChildValue))
{
continue;
}
tmp = ChartHelper.ConvertToDouble(((IChartChildValue)item).GetValue());
if (!ChartHelper.DoubleHasValue(tmp))
{
continue;
}
if (!ChartHelper.DoubleHasValue(min) || tmp - min < pre)
{
min = tmp;
}
if (ChartHelper.DoubleHasValue(tmpTotalChild))
{
tmpTotalChild += tmp;
}
else
{
tmpTotalChild = tmp;
}
}
if (!ChartHelper.DoubleHasValue(tmpTotalChild))
{
return;
}
if (!ChartHelper.DoubleHasValue(max) || tmpTotalChild - max > pre)
{
max = tmpTotalChild;
}
}
private void GetMinAndMax(object obj, ref double pre, ref double min, ref double max)
{
var tmp = ChartHelper.ConvertToDouble(obj);
if (!ChartHelper.DoubleHasValue(tmp))
{
return;
}
if (!ChartHelper.DoubleHasValue(min) || tmp - min < pre)
{
min = tmp;
}
if (!ChartHelper.DoubleHasValue(max) || tmp - max > pre)
{
max = tmp;
}
}