Sha256: a21bd1ce12236e911e31630f57ddb1a620fe558da317c932885e86fb052ba6bc
Contents?: true
Size: 755 Bytes
Versions: 18
Compression:
Stored size: 755 Bytes
Contents
# frozen_string_literal: true
# An enharmonic equivalent pitch is the same frequency spelled differently, such as D# and Eb.
class HeadMusic::Pitch::EnharmonicEquivalence
def self.get(pitch)
pitch = HeadMusic::Pitch.get(pitch)
@enharmonic_equivalences ||= {}
@enharmonic_equivalences[pitch.to_s] ||= new(pitch)
end
attr_reader :pitch
delegate :pitch_class, to: :pitch
def initialize(pitch)
@pitch = HeadMusic::Pitch.get(pitch)
end
def enharmonic_equivalent?(other)
other = HeadMusic::Pitch.get(other)
pitch.midi_note_number == other.midi_note_number && pitch.spelling != other.spelling
end
alias enharmonic? enharmonic_equivalent?
alias equivalent? enharmonic_equivalent?
private_class_method :new
end
Version data entries
18 entries across 18 versions & 1 rubygems