Class: HeadMusic::Style::Guidelines::AtLeastEightNotes

Inherits:
Annotation
  • Object
show all
Defined in:
lib/head_music/style/guidelines/at_least_eight_notes.rb

Overview

A counterpoint guideline

Constant Summary collapse

MINIMUM_NOTES = 
8
MESSAGE = 
"Write at least eight notes."

Instance Method Summary collapse

Constructor Details

This class inherits a constructor from HeadMusic::Style::Annotation

Instance Method Details

#deficiency_mark ⇒ Object (private) 



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# File 'lib/head_music/style/guidelines/at_least_eight_notes.rb', line 24

def deficiency_mark
  return unless notes.length < MINIMUM_NOTES

  HeadMusic::Style::Mark.for_all(placements, fitness: notes.length.to_f / MINIMUM_NOTES)
end

#marks ⇒ Object 



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# File 'lib/head_music/style/guidelines/at_least_eight_notes.rb', line 10

def marks
  placements.empty? ? no_placements_mark : deficiency_mark
end

#no_placements_mark ⇒ Object (private) 



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# File 'lib/head_music/style/guidelines/at_least_eight_notes.rb', line 16

def no_placements_mark
  HeadMusic::Style::Mark.new(
    HeadMusic::Content::Position.new(composition, "1:1"),
    HeadMusic::Content::Position.new(composition, "2:1"),
    fitness: 0
  )
end