M(core dumped)WE pretty please :
tempoChange =
#(define-music-function (interval endscale thenscale music)
(ly:duration? scale? (scale? 1) ly:music?)
"Make a gradual tempo change over @var{music}, essentially changing
speed after
every duration of @var{interval}, approaching a factor of speed of
@var{endscale}
compared to the start. Afterwards, tempo is switched to @var{thenscale} of the
original speed (default 1). If @var{thenscale} is 0, the speed reached at the
end is just maintained and can be overriden with an explicit @samp{\\tempo}
command if required."
(define (scaletempo oldscale newscale)
(make-apply-context
(lambda (ctx)
(set! (ly:context-property ctx 'tempoWholesPerMinute)
(ly:moment-mul (ly:context-property ctx 'tempoWholesPerMinute)
(ly:make-moment (/ newscale oldscale)))))))
(let* ((muslen (ly:moment-main (ly:music-length music)))
(intlen (ly:moment-main (ly:duration-length interval)))
(steps (/ muslen intlen))
(endfactor (scale->factor endscale))
(thenfactor (scale->factor thenscale)))
(make-simultaneous-music
(list music
(context-spec-music
(make-sequential-music
(let loop ((rsteplst (iota (1+ steps) endfactor (/ (- 1
endfactor) steps)))
(res (if (positive? thenfactor)
(list (scaletempo endfactor thenfactor))
(list))))
(if (null? (cdr rsteplst))
res
(loop (cdr rsteplst)
(cons* (scaletempo (cadr rsteplst) (car rsteplst))
(make-skip-music (ly:make-duration 0 0 intlen))
res)))))
'Score)))))
music = {
c'8 d' e' f' g' a' |
b' c'' b' a' g' f' |
}
structure = {
\time 6/8
\tempo 4. = 100
\tempoChange 8 1/2 0 {
s2. |
}
}
\score {
<<
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
\new Voice << \music \structure >>
>>
\layout {}
\midi {}
}
Le mer. 23 août 2023, à 10 h 10, Pierre-Luc Gauthier
<[email protected]> a écrit :
>
> Well, I think my code structure is the problem.
>
> The way I create parts is with this part generator this way :
>
> #(typicalPart 'piccolo piccolo structure)
>
> And for *every* part (instrument) it merges my \structure variable
> (\mark, \tempo, i.e. what every body in the orchestra needs) with the
> music of that part {c'''' d'''' e''''}.
>
> I think the problem is that the \changeTempo function is getting
> applied and re-applied at every single part (37ish parts).
>
> Le mer. 23 août 2023, à 09 h 59, Pierre-Luc Gauthier
> <[email protected]> a écrit :
> >
> > Not quite there yet.
> > Now I get :
> >
> > warning: the property 'tempoWholesPerMinute' must be of type 'positive
> > moment with no grace part', ignoring invalid value '#<Mom
> > 7234529593268583733/-9097535130079068160>'
> >
> > Le mer. 23 août 2023, à 09 h 45, David Kastrup <[email protected]> a écrit :
> > >
> > > Pierre-Luc Gauthier <[email protected]> writes:
> > >
> > > > And what do you know :
> > > >
> > > > git diff to the rescue.
> > > > -
> > > > +\include "articulate.ly"
> > > > - <<
> > > > + \articulate <<
> > > >
> > > > I tried different avenues and \articulate seems to have creeped its
> > > > way in in this floating point exception core dump…
> > > >
> > > > 'No idea why though nor do I need \articulate anyway. closing.
> > >
> > > Well, it certainly expands the problem space. But my own uses also
> > > employ articulate.ly . So it will still require something more special
> > > to trigger problems.
> > >
> > > --
> > > David Kastrup
> >
> >
> >
> > --
> > Pierre-Luc Gauthier
>
>
>
> --
> Pierre-Luc Gauthier
--
Pierre-Luc Gauthier
