Re: Change size of all notes in one voice with partCombine

[Aaron Hill]

On 2021-07-01 10:11 pm, Dinh Hoang Tu wrote:
> Yes, I did try \partCombineChords, but it doesn't seem what I expect.
> Expectation is 2 notes on same stem, one upper, one lower, not on 
> separate
> stems.
>
> Below is the test and attached result (2 notes have separate stems)
>
> \version "2.22.1"
> localFontSize =
> #(define-music-function (font-size music) (number? ly:music?)
>    (for-some-music
>      (lambda (m)
>        (if (music-is-of-type? m 'rhythmic-event)
>            (begin
>              (set! (ly:music-property m 'tweaks)
>                    (cons `(font-size . ,font-size)
>                          (ly:music-property m 'tweaks)))
>              #t)
>            #f))
>      music)
>    music)
>
> soprano = { f'4 g'4 a'4 b'4 c''2 }
> basso = { d'4 e' f'' g' a'2 }
> alto = { d'4 e' \stemUp f'' g' a'2 }
> tenor = { d'4 e' f'' g' a'2 }
> \new Score { \new Staff << \partCombineChords \soprano \basso >> }
> \new Score { \new Staff << \partCombineChords \soprano \alto >> }
> \new Score { \new Staff << \partCombineChords \soprano \localFontSize 
> -3
> \tenor >> }
>
> Please advice if any mistake or missing.

\partCombineChords is not a substitute for \partCombine.

The former just sets an internal state for the part combiner, however 
you must use \partCombine to invoke the combiner.  Consider:

%%%%
soprano = { f'4 g'4 a'4 b'4 c''2 }
tenor = { d'4 e' f'' g' a'2 }
\partCombine
  { \partCombineChords \soprano }
  { \stemUp \localFontSize -3 \tenor }
%%%%


-- Aaron Hill

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