/**
* Returns a property for a tag with a RATIONAL value. If rawOutput is true, returns a property
* with type RATIONAL. Otherwise, returns a property with type STRING, and the text representation
* of the Rational value as a floating-point ratio.
*/
protected Property addRationalProperty(String name, Rational r, boolean rawOutput) {
Property prop = null;
if (!rawOutput) {
prop = new Property(name, PropertyType.STRING, _format.format(r.toDouble()));
}
if (prop == null) {
prop = new Property(name, PropertyType.RATIONAL, r);
}
return prop;
}
protected static Rational average(Rational r1, Rational r2) {
long d1 = r1.getDenominator();
long d2 = r2.getDenominator();
Rational f1 = new Rational(r1.getNumerator() * d2, r1.getDenominator() * d2);
Rational f2 = new Rational(r2.getNumerator() * d1, r2.getDenominator() * d1);
return new Rational((f1.getNumerator() + f2.getNumerator()) / 2, f1.getDenominator());
}