/// <summary>
/// Converts <see cref="UnitsNet.Pressure.Value" /> at <see cref="Reference" /> to <see cref="double" /> at
/// <see cref="BaseReference" />
/// </summary>
/// <returns>The value of pressure at the <see cref="BaseReference" /></returns>
private double AsBaseReference()
{
switch (Reference)
{
case PressureReference.Absolute:
{
if (Pressure.Value < 0)
{
throw new ArgumentOutOfRangeException("Absolute pressure cannot be less than zero.");
}
return(Pressure.Value);
}
case PressureReference.Gauge:
{
if (Pressure.Value * -1 > AtmosphericPressure.ToUnit(Pressure.Unit).Value)
{
throw new ArgumentOutOfRangeException("Absolute pressure cannot be less than zero.");
}
return(AtmosphericPressure.ToUnit(Pressure.Unit).Value + Pressure.Value);
}
case PressureReference.Vacuum:
{
if (Pressure.Value > AtmosphericPressure.ToUnit(Pressure.Unit).Value)
{
throw new ArgumentOutOfRangeException("Absolute pressure cannot be less than zero.");
}
return(AtmosphericPressure.ToUnit(Pressure.Unit).Value - Pressure.Value);
}
default:
throw new NotImplementedException($"Can not convert {Reference} to base reference.");
}
}
/// <summary>
/// Converts <see cref="UnitsNet.Pressure.Value" /> to <see cref="double" /> at <see cref="PressureReference" />
/// </summary>
/// <param name="reference">The <see cref="PressureReference" /> to convert <see cref="ReferencePressure" /> to.</param>
/// <returns>The value of pressure at <see cref="PressureReference" /></returns>
private double AsBaseNumericType(PressureReference reference)
{
var baseReferenceValue = AsBaseReference();
if (Reference == reference)
{
return(Pressure.Value);
}
var negatingValue = Reference == PressureReference.Vacuum ? -1 : 1;
switch (reference)
{
case PressureReference.Absolute: return(baseReferenceValue);
case PressureReference.Gauge: return(baseReferenceValue - AtmosphericPressure.ToUnit(Pressure.Unit).Value);
case PressureReference.Vacuum: return(AtmosphericPressure.ToUnit(Pressure.Unit).Value - negatingValue * baseReferenceValue);
default:
throw new NotImplementedException($"Can not convert {Reference} to {reference}.");
}
}
