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tuplet bracket slope


From: Gilberto Agostinho
Subject: tuplet bracket slope
Date: Wed, 6 Jul 2016 05:30:55 -0700 (MST)

Hi all,

I am wondering if the way LilyPond's tuplet bracket algorithm works is
really ideal. It seems to me that the algorithm does not specify a maximum
slope for the brackets, and can produce things like this:

\version "2.19.37"

{    
  \tuplet 5/4 { <f'' c'''>16 d'4 }  
  \tuplet 5/4 { <f'' d'''>16 d'4 }  
  \tuplet 5/4 { <f'' e'''>16 d'4 }
  \tuplet 5/4 { <f'' f'''>16 d'4 }
  \tuplet 5/4 { <f'' g'''>16 d'4 }
  \tuplet 5/4 { <f'' a'''>16 d'4 }
  \tuplet 5/4 { <f'' b'''>16 d'4 }
  \tuplet 5/4 { <f'' c'''''>16 d'4 }
}

<http://lilypond.1069038.n5.nabble.com/file/n192294/22.png> 

If there would be a maximum slope, the results could be something like this:

\version "2.19.37"

{    
  \once \override TupletBracket.positions = #'(6 . 4)
  \tuplet 5/4 { <f'' c'''>16 d'4 }  
  \once \override TupletBracket.positions = #'(6.5 . 4.5)
  \tuplet 5/4 { <f'' d'''>16 d'4 }  
  \once \override TupletBracket.positions = #'(7 . 5)
  \tuplet 5/4 { <f'' e'''>16 d'4 }
  \once \override TupletBracket.positions = #'(7.5 . 5.5)
  \tuplet 5/4 { <f'' f'''>16 d'4 }
  \once \override TupletBracket.positions = #'(8 . 6)
  \tuplet 5/4 { <f'' g'''>16 d'4 }
  \once \override TupletBracket.positions = #'(8.5 . 6.5)
  \tuplet 5/4 { <f'' a'''>16 d'4 }
  \once \override TupletBracket.positions = #'(9 . 7)
  \tuplet 5/4 { <f'' b'''>16 d'4 }
  \once \override TupletBracket.positions = #'(13 . 11)
  \tuplet 5/4 { <f'' c'''''>16 d'4 }
}

<http://lilypond.1069038.n5.nabble.com/file/n192294/21.png> 

The latter seems like a more reasonable approach to me. Does anyone have
access to Elaine Gould's /Behind Bars/? If so, what does she says about the
bracket slope?

Cheers!
Gilberto



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