Re: Rules for beam subdivision

[Thomas Morley]

Am Sa., 30. Mai 2020 um 05:06 Uhr schrieb Vaughan McAlley
<vaughan@mcalley.net.au>:
>
> Hi,
>
> Beam subdivision is great, but is there a way of automatically turning it off 
> for just sixteenths? So recreating this example, but without constantly 
> turning subdivision on and off.
>
> Cheers,
> Vaughan
>
>

A first sketch:

\layout {
  \context {
      \Voice
      \consists
      #(lambda (ctx)
        (make-engraver
          (listeners
            ((rhythmic-event this-engraver event)
              (ly:context-set-property! ctx 'subdivideBeams
                (if (equal? (ly:event-property event 'length)
                            (ly:make-moment 1/16))
                    '()
                    #t))))))
  }
}

\relative c'' {
  \time 4/4
  \set baseMoment = #(ly:make-moment 1/8)
  \set beatStructure = 2,2,2,2
  c32 c c c c c c c
  c16 c c c
  \tuplet 3/2 8 { c16 c c c c c }
  c16 c c c
}

The coding does a plethora of settings for 'subdivideBeams.
It should be limited to situations where a Beam is actually present/initiated.
Thus I wrote a _first_ sketch...

Cheers,
  Harm