Re: NR 1.2.3 Upbeats: confusing explanation of measurePosition

[Eluze]

Federico Bruni-5 wrote
> This sentence:
> 
> The property measurePosition contains a rational number indicating how
> much
> of the measure has passed at this point. 

that's not my understanding - it just says/defines: now we are at this
position.

for instance we can use repetitive code:

{ 
  \clef "treble_8"
  \bar "" 
  \partial 8*5
  \repeat unfold 6 { 
    c4 d \breathe
    \set Timing.measurePosition = #(ly:make-moment 3/8)
    % \set Timing.measurePosition = #(ly:make-moment -5/8) % in a 4/4
measure would be the same!
  }
  c8 d e f g
  -"stop!"
  a1
}

setting the measurePosition doesn't care for what happened before.

once the end of the measure is reached (here after the five 8th: c8 d e f g)
the bar number count will be augmented.

a negative ratio defines how far away from the measure end we are.

the \partial command corresponds to setting a negative ratio in
measurePosition.

please correct me if I misunderstood it!
Eluze






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