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Versions: 21
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Contents
# frozen_string_literal: true
# Module for style guidelines.
module HeadMusic::Style::Guidelines; end
# A counterpoint guideline
class HeadMusic::Style::Guidelines::NoUnisonsInMiddle < HeadMusic::Style::Annotation
MESSAGE = 'Unisons may only be used in the first and last note.'
def marks
unison_pairs.map do |notes|
HeadMusic::Style::Mark.for_all(notes)
end.flatten
end
private
def unison_pairs
middle_unisons.map(&:notes).compact
end
def middle_unisons
middle_intervals.select { |interval| interval.perfect_consonance? && interval.unison? }
end
def middle_intervals
[harmonic_intervals[1..-2]].flatten.compact
end
end
Version data entries
21 entries across 21 versions & 1 rubygems