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Contents
module HeadMusic::Style::Annotations
end
class HeadMusic::Style::Annotations::StepOutOfUnison < HeadMusic::Style::Annotation
MESSAGE = "Exit a unison by step."
def marks
skips_following_unisons.map do |skip|
HeadMusic::Style::Mark.for_all(skip.notes)
end.flatten
end
private
def skips_following_unisons
melodic_intervals_following_unisons.select(&:skip?)
end
def melodic_intervals_following_unisons
@melodic_intervals_following_unisons ||=
perfect_unisons.map do |unison|
note1 = voice.note_at(unison.position)
note2 = voice.note_following(unison.position)
HeadMusic::MelodicInterval.new(voice, note1, note2) if note1 && note2
end.compact
end
def perfect_unisons
@unisons ||= harmonic_intervals.select(&:perfect_consonance?).select(&:unison?)
end
end
Version data entries
9 entries across 9 versions & 1 rubygems