interval method
The IntervalClass expressed as Interval between this PitchClass and
other
.
Example:
PitchClass.c.interval(PitchClass.e) == Interval.M3
PitchClass.gSharp.interval(PitchClass.d) == Interval.A4
Implementation
@override
// TODO(albertms10): return [IntervalClass]. See #248.
Interval interval(PitchClass other) {
final diff = difference(other);
return IntervalClass(diff)
.resolveClosestSpelling()
.descending(isDescending: diff.isNegative);
}