Class: Musicality::Sequencer

Inherits:
Object
  • Object
show all
Defined in:
lib/musicality/composition/sequencing/sequencer.rb

Direct Known Subclasses

DrumMachine

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(part_sequenceables) ⇒ Sequencer

Returns a new instance of Sequencer.



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

def initialize part_sequenceables
  @part_sequenceables = part_sequenceables.freeze
  @part_note_fifos = Hash[ part_sequenceables.keys.map {|partname| [ partname, NoteFIFO.new ] } ]
  @part_names = @part_sequenceables.keys
end

Instance Attribute Details

#part_names ⇒ Object (readonly)

Returns the value of attribute part_names.



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# File 'lib/musicality/composition/sequencing/sequencer.rb', line 4

def part_names
  @part_names
end

#part_sequenceables ⇒ Object (readonly)

Returns the value of attribute part_sequenceables.



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# File 'lib/musicality/composition/sequencing/sequencer.rb', line 4

def part_sequenceables
  @part_sequenceables
end

Instance Method Details

#next_part_notes(target_duration) ⇒ Object 



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# File 'lib/musicality/composition/sequencing/sequencer.rb', line 12

def next_part_notes target_duration
  if target_duration <= 0
    raise ArgumentError, "Target duration #{target_duration} is non-positive}"
  end
  part_notes = {}

  @part_sequenceables.each do |partname, sequenceable|
    note_fifo = @part_note_fifos[partname]

    while note_fifo.duration < target_duration
      note_fifo.add_note(sequenceable.next_note)
    end
    part_notes[partname] = note_fifo.remove_notes(target_duration)
  end

  return part_notes
end

#reset ⇒ Object 



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# File 'lib/musicality/composition/sequencing/sequencer.rb', line 30

def reset
  @part_sequenceables.values.each { |s| s.reset }
end