Class: Coltrane::ChordQuality

Inherits:
IntervalSequence show all
Defined in:
lib/coltrane/chord_quality.rb

Overview

It describe the quality of a chord, like maj7 or dim.

Instance Attribute Summary collapse

Attributes inherited from IntervalSequence

#intervals

Instance Method Summary collapse

Methods inherited from IntervalSequence

#&, #[], #all, #distances, #full_names, #has?, #interval_names, #intervals_semitones, #inversion, #inversions, #names, #next_inversion, #notes_for, #previous_inversion, #shift, #zero_it

Constructor Details

#initialize(name: nil, notes: nil) ⇒ ChordQuality

Returns a new instance of ChordQuality.



97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/coltrane/chord_quality.rb', line 97

def initialize(name: nil, notes: nil)
  if !name.nil?
    @name = name
    super(intervals: NAMES[name])
  elsif !notes.nil?
    super(notes: notes)
    @name = get_name
  else
    raise WrongKeywordsError, '[name:] || [notes:]'
  end
end

Instance Attribute Details

#name ⇒ Object (readonly) Also known as: to_s

Returns the value of attribute name.



6
7
8
 
# File 'lib/coltrane/chord_quality.rb', line 6

def name
  @name
end

Instance Method Details

#get_name ⇒ Object 



75
76
77
78
79
80
81
82
83
84
85
86
 
# File 'lib/coltrane/chord_quality.rb', line 75

def get_name
  if result = find_chord([*retrieve_chord_intervals].compact)
    return result
  elsif result = find_chord([*retrieve_chord_intervals(sus2_sequence)].compact)
    return result
  elsif result = find_chord([*retrieve_chord_intervals(sus4_sequence)].compact)
    return result
  else
    binding.pry
    raise ChordNotFoundError
  end
end

#suspension_type ⇒ Object 



89
90
91
92
93
94
95
 
# File 'lib/coltrane/chord_quality.rb', line 89

def suspension_type
  if has_major_second?
    'sus2'
  else has_fourth?
    'sus4'
  end
end