Class: Xi::Scale

Inherits:
Object show all
Extended by:
Forwardable
Defined in:
lib/xi/scale.rb

Constant Summary collapse

DEGREES = 
{
  # TWELVE TONES PER OCTAVE
  # 5 note scales
  minorPentatonic: [0,3,5,7,10],
  majorPentatonic: [0,2,4,7,9],
  # another mode of major pentatonic
  ritusen: [0,2,5,7,9],
  # another mode of major pentatonic
  egyptian: [0,2,5,7,10],

  kumoi: [0,2,3,7,9],
  hirajoshi: [0,2,3,7,8],

  iwato: [0,1,5,6,10],    # mode of hirajoshi
  chinese: [0,4,6,7,11],  # mode of hirajoshi
  indian: [0,4,5,7,10],
  pelog: [0,1,3,7,8],

  prometheus: [0,2,4,6,11],
  scriabin: [0,1,4,7,9],

  # han chinese pentatonic scales
  gong: [0,2,4,7,9],
  shang: [0,2,5,7,10],
  jiao: [0,3,5,8,10],
  zhi: [0,2,5,7,9],
  yu: [0,3,5,7,10],

  # 6 note scales
  whole: [0, 2, 4, 6, 8, 10],
  augmented: [0,3,4,7,8,11],
  augmented2: [0,1,4,5,8,9],

  # hexatonic modes with no tritone
  hexMajor7: [0,2,4,7,9,11],
  hexDorian: [0,2,3,5,7,10],
  hexPhrygian: [0,1,3,5,8,10],
  hexSus: [0,2,5,7,9,10],
  hexMajor6: [0,2,4,5,7,9],
  hexAeolian: [0,3,5,7,8,10],

  # 7 note scales
  major: [0,2,4,5,7,9,11],
  ionian: [0,2,4,5,7,9,11],
  dorian: [0,2,3,5,7,9,10],
  phrygian: [0,1,3,5,7,8,10],
  lydian: [0,2,4,6,7,9,11],
  mixolydian: [0,2,4,5,7,9,10],
  aeolian: [0,2,3,5,7,8,10],
  minor: [0,2,3,5,7,8,10],
  locrian: [0,1,3,5,6,8,10],

  harmonicMinor: [0,2,3,5,7,8,11],
  harmonicMajor: [0,2,4,5,7,8,11],

  melodicMinor: [0,2,3,5,7,9,11],
  melodicMinorDesc: [0,2,3,5,7,8,10],
  melodicMajor: [0,2,4,5,7,8,10],

  bartok: [0,2,4,5,7,8,10],
  hindu: [0,2,4,5,7,8,10],

  # raga modes
  todi: [0,1,3,6,7,8,11],
  purvi: [0,1,4,6,7,8,11],
  marva: [0,1,4,6,7,9,11],
  bhairav: [0,1,4,5,7,8,11],
  ahirbhairav: [0,1,4,5,7,9,10],

  superLocrian: [0,1,3,4,6,8,10],
  romanianMinor: [0,2,3,6,7,9,10],
  hungarianMinor: [0,2,3,6,7,8,11],
  neapolitanMinor: [0,1,3,5,7,8,11],
  enigmatic: [0,1,4,6,8,10,11],
  spanish: [0,1,4,5,7,8,10],

  # modes of whole tones with added note ->
  leadingWhole: [0,2,4,6,8,10,11],
  lydianMinor: [0,2,4,6,7,8,10],
  neapolitanMajor: [0,1,3,5,7,9,11],
  locrianMajor: [0,2,4,5,6,8,10],

  # 8 note scales
  diminished: [0,1,3,4,6,7,9,10],
  diminished2: [0,2,3,5,6,8,9,11],

  # 12 note scales
  chromatic: (0..11).to_a,
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(notes) ⇒ Scale

Returns a new instance of Scale.



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# File 'lib/xi/scale.rb', line 104

def initialize(notes)
  @notes = notes
end

Instance Attribute Details

#notes ⇒ Object (readonly)

Returns the value of attribute notes.



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# File 'lib/xi/scale.rb', line 102

def notes
  @notes
end

Instance Method Details

#p(*delta, **metadata) ⇒ Object 



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# File 'lib/xi/scale.rb', line 110

def p(*delta, **metadata)
  [@notes].p(*delta, **metadata)
end