Class: Stringed::InstrumentString

Inherits:
Object
  • Object
show all
Includes:
Music
Defined in:
lib/stringed/instrument_string.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root_note, options = {}) ⇒ InstrumentString

Returns a new instance of InstrumentString.



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# File 'lib/stringed/instrument_string.rb', line 8

def initialize(root_note, options={})
  @root_note = Music::Note.new(root_note.to_s)
  @fret_count = options.fetch(:fret_count,14)
end

Instance Attribute Details

#fret_count ⇒ Object (readonly)

Returns the value of attribute fret_count.



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# File 'lib/stringed/instrument_string.rb', line 6

def fret_count
  @fret_count
end

#root_note ⇒ Object (readonly)

Returns the value of attribute root_note.



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# File 'lib/stringed/instrument_string.rb', line 6

def root_note
  @root_note
end

Class Method Details

.octave_down(fret_no) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 27

def self.octave_down(fret_no)
  fret_no - 12
end

.octave_up(fret_no) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 23

def self.octave_up(fret_no)
  fret_no + 12
end

Instance Method Details

#find(note_name) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 35

def find(note_name)
  matches = []
  (0..(fret_count)).each do |fret|
    matches.push fret if fret_note(fret).name == note_name
  end
  matches
end

#find_chord(chord) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 43

def find_chord(chord)
  matches = []
  chord.notes.each do |note|
    matches << find(note.name)
  end
  matches.flatten.compact.sort
end

#fret_no(fret_note) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 19

def fret_no(fret_note)
  Music::Note.note_distance(@root_note.to_s, fret_note.to_s)
end

#fret_note(fret_no) ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 13

def fret_note(fret_no)
  fret_note = @root_note
  fret_no.times{ fret_note = fret_note.next }
  fret_note
end

#to_s ⇒ Object 



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# File 'lib/stringed/instrument_string.rb', line 31

def to_s
  @root_note.to_s
end