Sha256: ad6d36c7cfa969f04c3761e05bad9c3b1ac2caa6376195e412d7b2ce13f39543
Contents?: true
Size: 762 Bytes
Versions: 12
Compression:
Stored size: 762 Bytes
Contents
class HeadMusic::Chord
attr_reader :pitches
def initialize(pitches)
raise ArgumentError if pitches.length < 3
@pitches = pitches.map { |pitch| HeadMusic::Pitch.get(pitch) }.sort
end
def consonant_triad?
pitches.length == 3 &&
(
intervals.map(&:shorthand).sort == %w[M3 m3] ||
invert.intervals.map(&:shorthand).sort == %w[M3 m3] ||
invert.invert.intervals.map(&:shorthand).sort == %w[M3 m3]
)
end
def intervals
pitches.drop(1).map.with_index do |pitch, i|
HeadMusic::FunctionalInterval.new(pitches[i], pitch)
end
end
def invert
inverted_pitch = pitches[0] + HeadMusic::Interval.get(12)
new_pitches = pitches.drop(1) + [inverted_pitch]
HeadMusic::Chord.new(new_pitches)
end
end
Version data entries
12 entries across 12 versions & 1 rubygems