Class: Musicality::ScoreCollator

Inherits:
Object
  • Object
show all
Defined in:
lib/musicality/performance/conversion/score_collator.rb

Overview

Combine multiple program segments to one, using tempo/note/dynamic replication and truncation where necessary.

Instance Method Summary collapse

Constructor Details

#initialize(score) ⇒ ScoreCollator

Returns a new instance of ScoreCollator.



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# File 'lib/musicality/performance/conversion/score_collator.rb', line 8

def initialize score
  unless score.valid?
    raise ScoreNotValidError, "errors found in score: #{score.errors}"
  end
  @score = score
  @program = score.program.any? ? score.program : [0...score.duration]
end

Instance Method Details

#collate_key_changes ⇒ Object 



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# File 'lib/musicality/performance/conversion/score_collator.rb', line 39

def collate_key_changes
  collate_changes(@score.start_key, @score.key_changes, @program)
end

#collate_meter_changes ⇒ Object 



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# File 'lib/musicality/performance/conversion/score_collator.rb', line 35

def collate_meter_changes
  collate_changes(@score.start_meter, @score.meter_changes, @program)
end

#collate_parts ⇒ Object 



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# File 'lib/musicality/performance/conversion/score_collator.rb', line 16

def collate_parts
  Hash[
    @score.parts.map do |name, part|
      dyn_comp = ValueComputer.new(part.start_dynamic,part.dynamic_changes)

      new_part = part.clone
      new_part.notes = collate_notes(part.notes, @program)
      new_part.start_dynamic, new_part.dynamic_changes = collate_changes(
        part.start_dynamic, part.dynamic_changes, @program
      )
      [ name, new_part ]
    end
  ]
end

#collate_tempo_changes ⇒ Object 



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# File 'lib/musicality/performance/conversion/score_collator.rb', line 31

def collate_tempo_changes
  collate_changes(@score.start_tempo, @score.tempo_changes, @program)
end