Re: Setting up classical guitar fingerings

[Valentin Petzel]

Hello Luca,

changing the X-parent to the NoteHead would mean that we are aligning the 
Fingering horizontally wrt. the NoteHead instead of the whole NoteColumn. This 
would then mean that if for example due to some chord some note heads are on 
the other side of the Stem the alignment of something like <c d g>-1-2-3 would 
change (disregarding that it wouldn’t even be clear what note head to use).

Cheers,
Valentin

Am Montag, 21. Februar 2022, 09:19:30 CET schrieb Luca Fascione:
> Hi Thomas,
> thanks for your comment, this helps me refine my understanding of what's
> going on.
> 
> At the same time, while I do see that for other articulations (fermata,
> appoggiato) this parenting scheme works very well,
> I remain wondering whether for the style of layout of the fingering
> indications that I am after, the appropriate thing to do could be to change
> the parenting altogether.
> 
> If we look at chord for a second, I see the <one-note-chord> thing as a
> trick because to me even for proper chords the whole FingeringColumn idea
> is also a weird concept: imagine you're in say C major, and you're laying
> out fingering on the left of a chord like Fm <f aes c'>: I'm very unclear
> whether the most readable solution is to have the fingerings stacked one
> atop each other in a column (thereby more distant from f and c because of
> the intervening flat on the aes) or if instead the fingerings on f and c
> should be set tighter to their corresponding note heads and just the aes
> fingering be displaced left horizontally, to allow for the flat. I would
> like to experiment with various possibilities there, visually. I suppose
> you could still displace horizontally inside the column, and then push it
> all inwards closer to the chord even if the bboxes will overlap a bit... I
> anticipate issues such as making sure the fingering for c' doesn't
> interfer with the ascender on the flat glyph, also.
> 
> Which brings me to a question: what consequence would it have to replace
> the X-parent and Y-parent of the fingering to be the NoteHead instead?
> (I guess there will be a need to deal with the accidentals at a minimum)
> And also: how would I go at discovering these consequences without using
> too much of you guys' time?
> 
> Thanks again,
> Luca
> 
> On Mon, Feb 21, 2022 at 1:22 AM Thomas Morley <thomasmorley65@gmail.com>
> 
> wrote:
> > Am So., 20. Feb. 2022 um 22:41 Uhr schrieb Luca Fascione <
> > 
> > l.fascione@gmail.com>:
> > >  a) I'm looking for a way to get the fingerings where I want them
> > >  without
> > > 
> > > using one-note-chord tricks
> > 
> > Well, for Fingerings not in chord, like b-1 or <b dis'>-2-1 X-parent
> > is NoteColumn _not_ NoteHead, Y-parent  is VerticalAxisGroup.
> > There is no direct way from NoteHead to Fingering and vice versa.
> > 
> > Thus putting Fingering in-chord is unavoidable, imho, even for single
> > notes.
> > It is _not_ a trick, but a requirement.
> > 
> > Furthermore, you say you set music for classical guitar, then chords
> > will happen anyway, although not in your example.
> > Please note, as soon as more than one in-chord Fingering is present a
> > FingeringColumn is created. Which will make things even more
> > complicated.
> > See
> > https://gitlab.com/lilypond/lilypond/-/issues/6125
> > https://gitlab.com/lilypond/lilypond/-/merge_requests/732
> > 
> > Sorry to be of not more help,
> > 
> >   Harm

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