private Unit GetBaseUnits()
{
if (standardUnit is BaseUnit)
{
return(standardUnit);
}
if (standardUnit is AlternateUnit)
{
return(((AlternateUnit)standardUnit).parent.GetBaseUnits());
}
if (standardUnit is ProductUnit)
{
ProductUnit productUnit = (ProductUnit)standardUnit;
Unit baseUnits = ONE;
for (int i = 0; i < productUnit.unitCount; i++)
{
Unit unit = productUnit.GetUnit(i).GetBaseUnits();
unit = unit.Pow(productUnit.GetUnitPow(i));
unit = unit.Root(productUnit.GetUnitRoot(i));
baseUnits = baseUnits.Mul(unit);
}
return(baseUnits);
}
else
{
throw new ArithmeticException("System cannot be an instance of " + this);
}
}
/// <summary>
/// Queries the dimension of this unit. The returned dimension depends on the current
/// dimension model.
/// </summary>
/// <returns>The dimension.</returns>
public Dimension GetDimension()
{
Unit standard = standardUnit;
if (standard is BaseUnit)
{
return(Dimension.CURRENT_MODEL.GetDimension((BaseUnit)standard));
}
if (standard is AlternateUnit)
{
return(((AlternateUnit)standard).parent.GetDimension());
}
ProductUnit pu = (ProductUnit)standard;
Dimension ret = Dimension.NONE;
for (int i = 0; i < pu.unitCount; i++)
{
Unit u = pu.GetUnit(i);
Dimension d = u.GetDimension().Pow(pu.GetUnitPow(i)).Root(pu.GetUnitRoot(i));
ret = ret.Mul(d);
}
return(ret);
}
private static UnitConverter TransformOf(Unit unit)
{
if (unit is BaseUnit)
{
return(UnitConverter.IDENTITY);
}
ProductUnit productUnit = (ProductUnit)unit;
UnitConverter ret = UnitConverter.IDENTITY;
for (int i = 0; i < productUnit.unitCount; i++)
{
Unit u = productUnit.GetUnit(i);
UnitConverter converter = TransformOf(u);
if (!converter.isLinear)
{
throw new ArithmeticException("Cannot convert: " + unit + " is non-linear.");
}
if (productUnit.GetUnitRoot(i) != 1)
{
throw new ArithmeticException("Cannot convert: " + productUnit + " holds a base unit with a fractional exponent.");
}
int pow = productUnit.GetUnitPow(i);
if (pow < 0)
{
pow = -pow;
converter = converter.Inverse();
}
for (int j = 0; j < pow; j++)
{
ret = ret.Concatenate(converter);
}
}
return(ret);
}