Class: Musicality::NoteArray

Inherits:
Object
  • Object
show all
Includes:
Sequenceable
Defined in:
lib/musicality/composition/sequencing/note_array.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(notes) ⇒ NoteArray

Returns a new instance of NoteArray.

Raises:

  • (ArgumentError) 


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# File 'lib/musicality/composition/sequencing/note_array.rb', line 7

def initialize notes
  raise ArgumentError if notes.empty?

  @notes = notes.clone.freeze
  @notes_idx = 0
  @notes_count = notes.size

  @duration = @notes.inject(0) {|sum, note| sum + note.duration}
end

Instance Attribute Details

#duration ⇒ Object (readonly)

Returns the value of attribute duration.



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# File 'lib/musicality/composition/sequencing/note_array.rb', line 6

def duration
  @duration
end

#notes ⇒ Object (readonly)

Returns the value of attribute notes.



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# File 'lib/musicality/composition/sequencing/note_array.rb', line 6

def notes
  @notes
end

Instance Method Details

#next_note ⇒ Object 



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# File 'lib/musicality/composition/sequencing/note_array.rb', line 17

def next_note
  note = @notes[@notes_idx]

  @notes_idx += 1
  if @notes_idx >= @notes_count
    @notes_idx = 0
  end

  return note
end

#reset ⇒ Object 



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# File 'lib/musicality/composition/sequencing/note_array.rb', line 28

def reset
  @notes_idx = 0
end