internal static void UserValueToInternalValues(Axis xAxis, Axis yAxis, Object userXValue, Double userYValue, out Double internalXValue, out Double internalYValue)
{
internalYValue = userYValue;
internalXValue = Double.NaN;
if (xAxis != null)
{
if (userXValue != null)
{
if (xAxis.IsDateTimeAxis)
{
try
{
DateTime dateTime = Convert.ToDateTime(userXValue);
internalXValue = DateTimeHelper.DateDiff(dateTime, xAxis.FirstLabelDate, xAxis.MinDateRange, xAxis.MaxDateRange, xAxis.InternalIntervalType, xAxis.XValueType);
}
catch
{
throw new ArgumentException("Incorrect DateTime value of XValue.");
}
}
else
{
internalXValue = Convert.ToDouble(userXValue);
}
}
}
if (yAxis != null && yAxis.Logarithmic)
{
internalYValue = DataPoint.ConvertYValue2LogarithmicValue(xAxis.Chart as Chart, userYValue, yAxis.AxisType);
}
else
{
internalYValue = userYValue;
}
}