Module: Musa::Datasets::P

Includes:
Dataset
Defined in:
lib/musa-dsl/datasets/p.rb

Defined Under Namespace

Classes: PtoTimedSerie

Instance Method Summary collapse

Instance Method Details

#map(&block) ⇒ Object 



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# File 'lib/musa-dsl/datasets/p.rb', line 34

def map(&block)
  i = 0
  clone.map! do |element|
    # Process with block only the values (values are the alternating elements because P
    # structure is <value> <duration> <value> <duration> <value>)
    #
    if (i += 1) % 2 == 1
      block.call(element)
    else
      element
    end
  end
end

#to_ps_serie(base_duration: nil) ⇒ Object 



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# File 'lib/musa-dsl/datasets/p.rb', line 11

def to_ps_serie(base_duration: nil)
  base_duration ||= 1/4r # TODO review incoherence between neumalang 1/4r base duration for quarter notes and general 1r size of bar

  # TODO if instead of using clone (needed because of p.shift) we use index counter the P elements would be evaluated on the last moment

  Musa::Series::Constructors.E(clone, base_duration) do |p, base_duration|
    (p.size >= 3) ?
      { from: p.shift,
        duration: p.shift * base_duration,
        to: p.first,
        right_open: (p.length > 1) }.extend(PS).tap { |_| _.base_duration = base_duration } : nil
  end
end

#to_timed_serie(time_start: nil, time_start_component: nil, base_duration: nil) ⇒ Object 



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# File 'lib/musa-dsl/datasets/p.rb', line 25

def to_timed_serie(time_start: nil, time_start_component: nil, base_duration: nil)
  time_start ||= 0r
  time_start += self.first[time_start_component] if time_start_component

  base_duration ||= 1/4r # TODO review incoherence between neumalang 1/4r base duration for quarter notes and general 1r size of bar

  PtoTimedSerie.new(self, base_duration, time_start)
end