Hi Valentin, thank you this is super interesting. There's a lot of information in there I want to read more carefully, but for the moment I have one question: when is after-line-breaking invoke? Or actually, better question: where do I go to discover when (and I guess by what) after-line-breaking is invoked?
Another thing at the moment I don't follow is the 'engraver' variable in the scheme engraver you wrote: where does that come from? (I suspect it's some kind of name available where the engraver is invoked, but again: how would I go at discovering this?) Many thanks, this is very helpful Luca On Sun, Feb 20, 2022 at 11:07 PM Valentin Petzel <valen...@petzel.at> wrote: > Hello, > > our problem here is that such things like the positioning of beams are not > known for quite some time. But we could use something like > after-line-breaking > to adjust the results. Somewhat like here. > > Valentin > > Am Sonntag, 20. Februar 2022, 21:17:31 CET schrieb Luca Fascione: > > So... would anybody be able to lend a hand here please? > > > > Many thanks > > Luca > > > > On Sat, Feb 12, 2022 at 7:49 PM Luca Fascione <l.fasci...@gmail.com> > wrote: > > > Hello, > > > sorry for the double-post, I'm unsure whether this should go to -user > or > > > -devel. > > > > > > I'm looking for some guidance to set up fingering on classical guitar > > > sheets. > > > > > > I am attaching a simple piece of music, with two engraving sets > (measures > > > 1-5 and 6-10), one "as-is" from lilypond, the other using some trickery > > > involving one-note chords, purely to show a sample of what the result > I'm > > > after (and it's an approximation), vs what I get at the moment. > > > > > > Measures 1-5 in the source look like what I am intending to type, but > it > > > has a number of engraving defects I don't understand (you can see the > > > beams > > > don't avoid the fingerings, nor they are located correctly wrt the > > > accidentals, the second beat of measure 5 illustrates this well. I'm > not > > > super in love with measure 10 either, but if I understand the docs > > > correctly, the issue there is that the 'offset' correction is applied > > > post-layout, and so naturally it won't back-affect the placement of the > > > beams. > > > > > > I have made several other experiments, I'm just not wanting to waste > > > people's time. But setting Fingering.side-axis = #X seems somewhat > > > promising, but it seems unable to find any usable Y data about the > > > parents, > > > and smashes all numbers on the B line, as well as not dealing with > > > accidentals. > > > > > > I have an engraving project in front of me, for which I'm more than > happy > > > to put in the time to contribute the code to a proper solution myself, > and > > > I really don't want to make poor use of time from folks busy with other > > > work, but I feel I'll need some level of guidance as to what to do. For > > > context I can do C++ and I can manage guile ok (I'm a software engineer > > > for > > > work, I'm mostly working in the field of computer graphics). > > > > > > I was looking into this problem several years ago also, and Han-Wen > > > Nienhuys at the time suggested I should use a positioning callback > > > attached > > > to the Fingering grobs, but I couldn't find a way to do such a thing > (in > > > particular I can't find what property to use for this). So far I've > traced > > > the Fingering system to be an instance of the Articulations/Scripts > > > system, > > > but that's as far as I got. > > > > > > It seems to me what's needed would be to decide where the heads go, > then > > > the accidentals, at this stage deal with the fingering and only then > there > > > would be enough bboxes to reason about the beaming (this is the skyline > > > concept I think). In reasoning about how Articulations are engraved, > it's > > > possible the order of events for fingering would be different from the > > > order of events in other articulations (which I think are laid out > after > > > beams are in place, if I am not mistaken), warranting a bigger change, > but > > > I have no idea where that is located/managed. > > > > > > Many thanks for your time, > > > Luca > >
