Sha256: 251fa53c10cb44747f171b05a80d4eeb8f488f88391f017108d0e3b53e4b54c9
Contents?: true
Size: 805 Bytes
Versions: 6
Compression:
Stored size: 805 Bytes
Contents
# Encapsulate the distance methods of the interval
class HeadMusic::DiatonicInterval::Size
attr_reader :low_pitch, :high_pitch
def initialize(pitch1, pitch2)
@low_pitch, @high_pitch = *[pitch1, pitch2].sort
end
def number
@number ||= @low_pitch.steps_to(@high_pitch) + 1
end
def simple_number
@simple_number ||= octave_equivalent? ? 8 : (number - 1) % 7 + 1
end
def octaves
@octaves ||= number / 8
end
def simple?
number <= 8
end
def compound?
!simple?
end
def simple_semitones
@simple_semitones ||= semitones % 12
end
def semitones
(high_pitch - low_pitch).to_i
end
def steps
number - 1
end
def simple_steps
steps % 7
end
private
def octave_equivalent?
number > 1 && ((number - 1) % 7).zero?
end
end
Version data entries
6 entries across 6 versions & 1 rubygems