Am Do., 9. Juli 2020 um 11:46 Uhr schrieb Maurits Lamers
<maur...@weidestraat.nl>:
>
> Interesting, as it is something that I am also trying to solve. My current
> approach is to match the start of the voice itself and the end of any notes
> from existing voices at that moment.
> Not entirely implemented yet though...
>
> cheers
>
> Maurits
>
> > Op 8 jul. 2020, om 19:20 heeft Thomas Morley <thomasmorle...@gmail.com> het
> > volgende geschreven:
> >
> > Hi all,
> >
> > if temporary Voices occur, then the main Voice may not contain
> > rhythmic-events for the duration of those temporary Voices.
> > I'd like to identify where the main Voice "pauses", like in this test-code:
> >
> > My_test_engraver =
> > #(lambda (context)
> > (let* ((mus-event #f))
> > (make-engraver
> > (listeners
> > ((rhythmic-event this-engraver event)
> > (set! mus-event
> > (cons
> > (ly:context-current-moment context)
> > (ly:prob-property event 'length)))))
> > ((process-music this-engraver)
> > (if (and mus-event
> > (equal? (ly:context-current-moment context) (car
> > mus-event)))
> > (begin
> > (format #t
> > "\nEvent seen starting at ~a ending at ~a"
> > (car mus-event) (ly:moment-add (car mus-event) (cdr
> > mus-event)))
> > (set! mus-event #f))
> > (format #t
> > "\nCurrent context has no rhythmic-event starting at ~a"
> > (ly:context-current-moment context)))))))
> > \new Voice
> > \with { \consists \My_test_engraver }
> > {
> > b1
> > R
> > \new Voice d''
> > s
> > << e' \\ c' >>
> > r
> > }
> >
> > ==>
> > Event seen starting at #<Mom 0> ending at #<Mom 1>
> > Event seen starting at #<Mom 1> ending at #<Mom 2>
> > Current context has no rhythmic-event starting at #<Mom 2>
> > Event seen starting at #<Mom 3> ending at #<Mom 4>
> > Current context has no rhythmic-event starting at #<Mom 4>
> > Event seen starting at #<Mom 5> ending at #<Mom 6>
> > Current context has no rhythmic-event starting at #<Mom 6>
> >
> > Questions
> > (a) Is there a better possibility than calculating, based on
> > current-moment and 'length of the event?
> > (b) Are there other possibilities where a Voice-context "pauses"? I.e.
> > staying alive, but not containing rhythmic-events?
> >
> > Thanks,
> > Harm
> >
>
Hi Maurits,
my use-case is little different.
I try to code a new spanner-grob, it should end automatically under
certain circumstances. In this regard it will have similarities with
Glissando or Tie.
One of those conditions is a "pausing" Voice.
Cheers,
Harm
