Class: Stretto::Voice

Inherits:

Array

• Object
• Array
• Stretto::Voice

show all

Defined in:

lib/stretto/music_elements/voice.rb

Overview

Constant Summary

DEFAULT_LAYER_INDEX =

0

Instance Attribute Summary (collapse)

• - (Object) index readonly

  Returns the value of attribute index.

• - (Object) layers readonly

  Returns the value of attribute layers.

Instance Method Summary (collapse)

• - (Object) <<(element)

  Appends an element to the voice, creating an additional layer if necessary.

• - (Array(MusicElement)) elements

  Method intended to keep consistency between array-like structures.

• - (Voice) initialize(index, *args) constructor

  A new instance of Voice.

• - (Object) layer(index)

  Accesor for the layer in the specified index.

Methods inherited from Array

#sum

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# File 'lib/stretto/music_elements/voice.rb', line 18

def initialize(index, *args)
  @layers = {}
  @index = index
  super(*args)
end

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# File 'lib/stretto/music_elements/voice.rb', line 16

def index
  @index
end

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# File 'lib/stretto/music_elements/voice.rb', line 15

def layers
  @layers
end

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# File 'lib/stretto/music_elements/voice.rb', line 32

def <<(element)
  if element.kind_of?(Stretto::MusicElements::LayerChange)
    @current_layer = (@layers[element.index] ||= Layer.new)
  else
    @layers[DEFAULT_LAYER_INDEX] = @current_layer = Layer.new unless @current_layer
    @current_layer << element
  end
  super(element)
end

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# File 'lib/stretto/music_elements/voice.rb', line 26

def elements
  to_a
end

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# File 'lib/stretto/music_elements/voice.rb', line 43

def layer(index)
  @layers[index]
end