Re: Resetting beat count

[Aaron Hill]

On 2020-03-07 9:41 pm, Pablo Cordal wrote:
> Hi everyone!
>
> I need to write several musical elements one after the other in the 
> same
> staff separated by a double bar.Each element can last less or more than 
> one
> bar (could be for instance 1 bar and a half),and I need an instruction 
> so
> the beat count starts after each double bar.
>
> Anybody can give a hand please?

Seems like all you need to do is reset the Timing.measurePosition back 
to zero and increment the Score.currentBarNumber:

%%%%
\version "2.19.84"

forceBar = #(define-music-function (bar) (string?)
  (define (advanceToNextMeasure context)
    (let ((timing (ly:context-find context 'Timing))
          (score (ly:context-find context 'Score)))
      (ly:context-set-property! timing 'measurePosition
        (ly:make-moment 0))
      (ly:context-set-property! score 'currentBarNumber
        (1+ (ly:context-property score 'currentBarNumber)))))
  #{ \applyContext #advanceToNextMeasure \bar #bar #})

{
  \override Score.BarNumber.break-visibility = #all-visible

  b'4 4 4 4 4 \forceBar "|."
  b'4 4 4 4 4 4 4 \forceBar "|."
  b'4 4 4 \forceBar "|."
  b'4 4 4 4 4 4 \forceBar "|."
}
%%%%

I have wrapped that up in a \forceBar command which acts like a \bar 
that always starts a new measure.

This could have unintended side-effects, so additional testing would be 
needed.


-- Aaron Hill