Adds arpeggio

lib/music_theory.rb

@@ -9,6 +9,7 @@
 require "music_theory/modes"
 require "music_theory/third"
 require "music_theory/chord"
+require "music_theory/arpeggio"
 require "music_theory/harmonize"
 require "music_theory/output"
 require "music_theory/play"

lib/music_theory/arpeggio.rb

@@ -0,0 +1,25 @@
+require 'music_theory/output'
+
+module MusicTheory
+ class Arpeggio
+ include MusicTheory::Output
+
+ attr_accessor :third, :duration, :all_notes, :output_file_name
+
+ def initialize(third, options = {})
+ @duration = options[:duration] || 0.25
+ @third = third
+ @output_file_name = options[:output_file_name] || 'chord' # File name to write (without extension)
+ end
+
+ def arpeggionate
+ third.all_notes.each {|note| note.duration = duration}
+ third.all_notes + [third.all_notes[2], third.all_notes[1], third.all_notes[0], third.all_notes[1]]
+ end
+
+ def samples
+ arpeggionate.map(&:samples).flatten
+ end
+
+ end
+end

lib/music_theory/scale.rb

@@ -55,6 +55,10 @@ def third
  third ||= MusicTheory::Third.new self
  end
 
+ def arpeggio
+ arpeggio ||= third.arpeggio
+ end
+
  def chord
  third.chord
  end

lib/music_theory/third.rb

@@ -26,9 +26,14 @@ def chord
  chord ||= MusicTheory::Chord.new self
  end
 
+ def arpeggio
+ arpeggio ||= MusicTheory::Arpeggio.new self
+ end
+
  def output_file_name
  scale.output_file_name || 'thirds'
  end
 
+
  end
 end

lib/music_theory/version.rb

@@ -1,3 +1,3 @@
 module MusicTheory
- VERSION = "0.1.1"
+ VERSION = "0.2.0"
 end