Hi Lukas,
Wow, thanks a lot for this very quick solution!!
The parantheses are not really necessary for me,
thanks again!
ole
> Am 31.10.2021 um 19:54 schrieb Lukas-Fabian Moser <l...@gmx.de>:
>
> Hi Ole,
>
> Am 31.10.21 um 19:13 schrieb ole:
>> I've already removed the stem-engraver in the \layout part (to get the
>> quarter notes without stem)
>
> I just want to point out that removing the stem engraver removes the stems
> "for good". Often, one wants to remove the stems but wants to be able to
> switch them on again at some later point in the score; in this case, it's
> better to just do \omit Stem (in \layout {} or in your music) which can be
> undone.
>
> (Strictly speaking, removing the engraver does more than just \omitting the
> object, which in turn is more than just \hide'ing it.)
>
>> Does someone have a solution for that particular spot by chance, otherwise I
>> thing about using Inkscape..?
>
> One possibility would be to abuse stems for this. (This does not work if the
> Stem engraver is removed, see above.)
>
> A first approximation:
>
> \version "2.22"
>
> connectArrowStem =
> #(define-music-function (dir) (ly:dir?)
> #{
> \once {
> \undo \omit Stem % in case someone \omit'ted them :-)
> \override Stem.length-fraction = 0
> \override Stem.X-offset = 0.65
> \override Stem.thickness = 2
> \override Stem.stencil =
> #(grob-transformer
> 'stencil
> (lambda (grob stem)
> (let* ((Y-ext (ly:stencil-extent stem Y))
> (Y-pos (interval-index Y-ext (* dir 0.3))))
> (ly:stencil-add
> stem
> (ly:stencil-translate-axis
> (grob-interpret-markup grob (markup #:arrow-head Y dir #f))
> Y-pos Y)))))
> }
> #})
>
> {
> \omit Stem
> c'4 d' e'4
> \connectArrowStem #UP <c' g''>4
> \connectArrowStem #DOWN <b' g''>
> }
>
> This still causes problems if the two notes are too close together (because
> LilyPond still creates a stem protruding over one of the notes).
>
> I also didn't implement the parentheses yet.
>
> Lukas
>
>
