Class: Diatone::Chord

Inherits:

Object

• Object
• Diatone::Chord

Defined in:

lib/diatone.rb

Class Method Summary

• .abbr(t) ⇒ Object
• .get(s, relative = false) ⇒ Object
• .name(s) ⇒ Object

Class Method Details

.abbr(t) ⇒ Object

# File 'lib/diatone.rb', line 161

def self.abbr (t)
  t.gsub!(' major','maj')
  t.gsub!('major','maj')
  t.gsub!(' minor','m')
  t.gsub!('minor','m')
  t.gsub!('min','m')
  t.gsub!('aug','+')
  return t
end

.get(s, relative = false) ⇒ Object

# File 'lib/diatone.rb', line 171

def self.get (s,relative=false)
  notes = []
  s.sub!("#","♯")
  if s[1] == '♯' or s[1] == 'b'
    scale = Scale.get s[0..1]
    type = abbr(s[2..-1])
  else
    scale = Scale.get s[0]
    type = abbr(s[1..-1])
  end
  if CHORDS.include? type
    CHORDS[type].each do |n|
      if relative
        notes.push(n.floor + 1)
      else
        if n == n.to_i
          notes.push scale[n%scale.length]
        else
          r = ((n*10).to_i%10)-5
          s = scale[n.to_i%scale.length]
          f = Note.fix(s) + r
          n = Note.key(f, false)
          notes.push(n)
        end
      end
    end
  else
    return [false,type]
  end
  return notes
end

.name(s) ⇒ Object

# File 'lib/diatone.rb', line 203

def self.name (s)
  if s[1] == '♯' or s[1] == 'b'
    note = Note.key s[0..1], false
    type = abbr(s[2..-1])
  else
    note = Note.key s[0], false
    type = abbr(s[1..-1])
  end
  return note+type
end