class HeadMusic::Style::Guidelines::PrepareOctaveLeaps

A counterpoint guideline

Constants

MESSAGE

Public Instance Methods

marks() click to toggle source
# File lib/head_music/style/guidelines/prepare_octave_leaps.rb, line 10
def marks
  (external_entries + external_exits + octave_ending).map do |trouble_spot|
    HeadMusic::Style::Mark.for_all(trouble_spot)
  end
end

Private Instance Methods

external_entries() click to toggle source
# File lib/head_music/style/guidelines/prepare_octave_leaps.rb, line 18
def external_entries
  melodic_intervals.each_cons(2).map do |pair|
    first, second = *pair
    pair.map(&:notes).uniq if second.octave? && !second.spans?(first.first_note.pitch)
  end.compact
end
external_exits() click to toggle source
# File lib/head_music/style/guidelines/prepare_octave_leaps.rb, line 25
def external_exits
  melodic_intervals.each_cons(2).map do |pair|
    first, second = *pair
    pair.map(&:notes).uniq if first.octave? && !first.spans?(second.second_note.pitch)
  end.compact
end
octave_ending() click to toggle source
# File lib/head_music/style/guidelines/prepare_octave_leaps.rb, line 32
def octave_ending
  octave_ending? ? [melodic_intervals.last.notes] : []
end
octave_ending?() click to toggle source
# File lib/head_music/style/guidelines/prepare_octave_leaps.rb, line 36
def octave_ending?
  melodic_intervals.last&.octave?
end