public static Fraction CreateFraction(IEnumerable <OpenXmlElement> upper, IEnumerable <OpenXmlElement> lower)
{
var fraction = new Fraction();
var numerator = new Numerator();
numerator.Append(upper);
var denominator = new Denominator();
denominator.Append(lower);
fraction.AppendChild(numerator);
fraction.AppendChild(denominator);
return(fraction);
}
/// <summary>
/// Converts the unit to a string.
/// </summary>
/// <param name="IncludePrefix">If the prefix should be included in the string or not.</param>
public string ToString(bool IncludePrefix)
{
StringBuilder Numerator = null;
StringBuilder Denominator = null;
int NrDenominators = 0;
foreach (KeyValuePair <AtomicUnit, int> Factor in this.factors)
{
if (Factor.Value > 0)
{
if (Numerator is null)
{
if (IncludePrefix)
{
Numerator = new StringBuilder(Prefixes.ToString(this.prefix));
}
else
{
Numerator = new StringBuilder();
}
}
else
{
Numerator.Append('⋅');
}
Numerator.Append(Factor.Key.Name);
if (Factor.Value > 1)
{
if (Factor.Value == 2)
{
Numerator.Append('²');
}
else if (Factor.Value == 3)
{
Numerator.Append('³');
}
else
{
Numerator.Append('^');
Numerator.Append(Factor.Value.ToString());
}
}
}
else
{
if (Denominator is null)
{
Denominator = new StringBuilder();
}
else
{
Denominator.Append('⋅');
}
NrDenominators++;
Denominator.Append(Factor.Key.Name);
if (Factor.Value < -1)
{
if (Factor.Value == -2)
{
Denominator.Append('²');
}
else if (Factor.Value == -3)
{
Denominator.Append('³');
}
else
{
Denominator.Append('^');
Denominator.Append((-Factor.Value).ToString());
}
}
}
}
if (Numerator is null)
{
if (IncludePrefix)
{
Numerator = new StringBuilder(Prefixes.ToString(this.prefix));
}
else
{
Numerator = new StringBuilder();
}
}
if (!(Denominator is null))
{
Numerator.Append('/');
if (NrDenominators > 1)
{
Numerator.Append('(');
}
Numerator.Append(Denominator.ToString());
if (NrDenominators > 1)
{
Numerator.Append(')');
}
}
return(Numerator.ToString());
}