Ah, I think I see what you mean. Yes, two properties may prove useful in the future. But given the presence of a simple workaround for the cases we're aware of at the moment, I don't see a need to change things until such an evolution actually happens.
Thanks, Owen On Wed, Jul 22, 2020 at 2:35 AM Benkő Pál <benko....@gmail.com> wrote: > I just raised it to show that SMuFL may evolve so (if musicology's > interpretation of dragmae change so) that separate properties of up > and down stem attachment points may come handy. you may well have far > stronger counterarguments, of course. > > Owen Lamb <owendl...@gmail.com> ezt írta (időpont: 2020. júl. 22., Sze, > 1:57): > > > > Thanks for the tip, Benkő! > > > > At the moment, I think these sort of double stems are outside of my > project's scope. A two-stemmed black dragma is present in SMuFL as a > pre-composed note (mensuralBlackDragma), but Emmentaler does not have a > glyph for it and LilyPond does not specifically support double-stemming > single notehead grobs. All I am in charge of at the moment is taking how > LilyPond currently handles glyphs and adapting it to the SMuFL > specification, and that's keeping my hands full enough at the moment. > > > > If you need it, I think the basic version of such a glyph can currently > be simulated by using two notehead grobs, something like this: > > > > dragma = > > #(define-music-function (music) > > (ly:music?) > > #{ > > \override Staff.Stem.length = 4 > > << > > \override NoteColumn.direction = #UP > > #music > > \\ > > \override NoteColumn.direction = #DOWN > > #music > > >> > > \revert Staff.Stem.length > > #}) > > > > \score { > > \new Staff { > > \override Staff.NoteHead.style = #'petrucci > > \dragma { g'4 a'2 } > > b'4 \dragma b' a' c'' > > } > > } > > > > I can't vouch for the flags looking right, but it's something. > > > > If you want to use the precomposed glyph as it is found in another SMuFL > font, you should be able to find it via something like OLL's \smuflglyph > command once I'm done with GSoC. Otherwise, this would probably be a good > idea for a separate feature request. > > > > Hope this helps, > > Owen > > > > On Tue, Jul 21, 2020 at 3:28 AM Benkő Pál <benko....@gmail.com> wrote: > >> > >> Thanks. Lukas, that's what I looked for! On the next page there are > >> dragmas with flags on both stem and ones with flags only on the down > >> stem. > >> > >> Lukas-Fabian Moser <l...@gmx.de> ezt írta (időpont: 2020. júl. 21., K, > 11:32): > >> > > >> > Hi Pál, > >> > > >> > > in ancient (ars subtilior) notation there actually are noteheads > with > >> > > two stems (which may also be flagged differently), called "dragma". > >> > > a picture search for "dragma ars subtilior" returned poor images; > one > >> > > not entirely useless is > >> > > > https://www.last.fm/music/Philippus+de+Caserta/+images/f82a66af9573ba3cf431b0b1986f07e8 > >> > > (staff three, the black block between two red block in the first > half > >> > > of the staff); or see the youtube video > >> > > https://www.youtube.com/watch?v=wd3ouxA9p-o > >> > > >> > See also the examples given in Apel, the first of which being > >> > > >> > > https://archive.org/details/notationofpolyph1953apel/page/392/mode/2up > >> > > >> > Best > >> > Lukas > >> > >