Contents

# frozen_string_literal: true

# Module for style guidelines.
module HeadMusic::Style::Guidelines; end

# A counterpoint guideline
class HeadMusic::Style::Guidelines::AtLeastEightNotes < HeadMusic::Style::Annotation
  MINIMUM_NOTES = 8

  MESSAGE = "Write at least eight notes."

  def marks
    placements.empty? ? no_placements_mark : deficiency_mark
  end

  private

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

  def deficiency_mark
    return unless notes.length < MINIMUM_NOTES

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

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
head_music-0.29.0	lib/head_music/style/guidelines/at_least_eight_notes.rb
head_music-0.28.0	lib/head_music/style/guidelines/at_least_eight_notes.rb