class HeadMusic::Style::Guidelines::AvoidOverlappingVoices
A counterpoint guideline
Constants
- MESSAGE
Public Instance Methods
marks()
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 10 def marks overlappings end
Private Instance Methods
overlappings()
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 16 def overlappings overlappings_of_lower_voices + overlappings_of_higher_voices end
overlappings_for_voices(voices, comparison_operator)
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 28 def overlappings_for_voices(voices, comparison_operator) [].tap do |marks| voices.each do |a_voice| overlapped_notes = overlappings_with_voice(a_voice, comparison_operator) marks << HeadMusic::Style::Mark.for_each(overlapped_notes) end end.flatten.compact end
overlappings_of_higher_voices()
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 24 def overlappings_of_higher_voices overlappings_for_voices(higher_voices, :<) end
overlappings_of_lower_voices()
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 20 def overlappings_of_lower_voices overlappings_for_voices(lower_voices, :>) end
overlappings_with_voice(other_voice, comparison_operator)
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# File lib/head_music/style/guidelines/avoid_overlapping_voices.rb, line 37 def overlappings_with_voice(other_voice, comparison_operator) voice.notes.drop(1).select do |note| preceding_note = other_voice.note_preceding(note.position) following_note = other_voice.note_following(note.position) preceding_note&.pitch&.send(comparison_operator, note.pitch) || following_note&.pitch&.send(comparison_operator, note.pitch) end end