Module: Musa::Datasets::PDV

Includes:
AbsD, Helper
Defined in:
lib/musa-dsl/datasets/pdv.rb

Constant Summary collapse

NaturalKeys = 
(NaturalKeys + [:pitch, :velocity]).freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from AbsD

#duration, #forward_duration, is_compatible?, #note_duration, to_AbsD

Methods included from E

#valid?, #validate!

Instance Attribute Details

#base_duration ⇒ Object

Returns the value of attribute base_duration.



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# File 'lib/musa-dsl/datasets/pdv.rb', line 14

def base_duration
  @base_duration
end

Instance Method Details

#to_gdv(scale) ⇒ Object 



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# File 'lib/musa-dsl/datasets/pdv.rb', line 16

def to_gdv(scale)
  gdv = {}.extend GDV
  gdv.base_duration = @base_duration

  if self[:pitch]
    if self[:pitch] == :silence
      gdv[:grade] = :silence
    else
      note = scale.note_of_pitch(self[:pitch], allow_chromatic: true)

      if background_note = note.background_note
        gdv[:grade] = background_note.grade
        gdv[:octave] = background_note.octave
        gdv[:sharps] = note.background_sharps
      else
        gdv[:grade] = note.grade
        gdv[:octave] = note.octave
      end
    end
  end

  gdv[:duration] = self[:duration] if self[:duration]

  if self[:velocity]
    # ppp = 16 ... fff = 127
    # TODO create a customizable MIDI velocity to score dynamics bidirectional conversor
    gdv[:velocity] = [1..1, 2..8, 9..16, 17..33, 34..49, 49..64, 65..80, 81..96, 97..112, 113..127].index { |r| r.cover? self[:velocity] } - 5
  end

  (keys - NaturalKeys).each { |k| gdv[k] = self[k] }

  gdv
end