public static ScaleFactor UseIfValid(int numerator, int denominator, ScaleFactor lastResort)
{
if (numerator <= 0 || denominator <= 0)
{
return lastResort;
}
else
{
return new ScaleFactor(numerator, denominator);
}
}
public static ScaleFactor Min(int n1, int d1, int n2, int d2, ScaleFactor lastResort)
{
ScaleFactor a = UseIfValid(n1, d1, lastResort);
ScaleFactor b = UseIfValid(n2, d2, lastResort);
return ScaleFactor.Min(a, b);
}
public static ScaleFactor Min(ScaleFactor lhs, ScaleFactor rhs)
{
if (lhs < rhs)
{
return lhs;
}
else
{
return rhs;
}
}
public static ScaleFactor Max(ScaleFactor lhs, ScaleFactor rhs)
{
if (lhs > rhs)
{
return lhs;
}
else
{
return lhs;
}
}