Class: WTFChord::Formatters::Piano

Inherits:
Base
  • Object
show all
Defined in:
lib/wtf_chord/formatters/piano.rb

Constant Summary

Constants inherited from Base

Base::FRETS

Instance Method Summary collapse

Methods inherited from Base

#initialize, #keys, separator, to_proc, with_rates, #with_rates?

Constructor Details

This class inherits a constructor from WTFChord::Formatters::Base

Instance Method Details

#draw ⇒ Object 



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# File 'lib/wtf_chord/formatters/piano.rb', line 8

def draw
  [
    unique_notes.sort.join(" - "),
    Keyboard.press(*unique_notes.map(&:position))
  ].join("\n\n")
end

#unique_notes ⇒ Object 



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# File 'lib/wtf_chord/formatters/piano.rb', line 15

def unique_notes
  strings.reject(&:dead?).each_with_object([[], []]) do |string, (positions, notes)|
    unless positions.include?(string.note.position)
      positions << string.note.position
      notes << string.note
    end
  end[1]
end