Dear list! I'm soon going to start engraving a piece that contains very many glissandi with timing marks (or actually, glissandi with broken bowing and articulations during the way). The snippet in http://lilypond.org/doc/v2.19/Documentation/notation/expressive-marks-as-lines#glissando mentions the stems might need to be repositioned slightly, and I was wondering if this would be possible to automate.
I realize this will be complicated, since it (as I understand it at least) will require changing stem lengths and notehead attachments after the horizontal spacing is calculated (possibly changing pitches too, but the solution I’m imagining would not do that). So I would need to access the calculated positions of the stems and of the endpoints of the glissando. Is that possible? Where and what do I need to read up to accomplish it? Or has someone already done something similar? I have seen Piaras Hobans code in this thread: https://lists.gnu.org/archive/html/lilypond-user/2014-03/msg00717.html , and it’s interesting for me, but it relies on the stems being equally spaced, which they shouldn’t be in my case. In the following example I’m looking for a way to calculate up and y-diff in the glissNote function, instead of having to type them in by hand after looking at the resulting score. (The gap between the stems and glissando-line is intentional, the articulation positioning is just not done yet). I have not done it minimal because I wanted to give a glimpse of the point of the notation also. %%%%%%%%% \version "2.19.82" glissNote = #(define-music-function (up y-diff note) (boolean? number? ly:music?) #{ \tweak transparent ##t \tweak no-ledgers ##t \tweak stem-attachment #(cons (if up -1 1) y-diff) #note #} ) glissRest = #(define-music-function (staff-position rest) (number? ly:music?) #{ \tweak Y-offset #staff-position \tweak layer #-1 \tweak whiteout #10 \parenthesize #rest #} ) glissSkip = #(define-music-function (music) (ly:music?) #{ \override NoteColumn.glissando-skip = ##t #music \revert NoteColumn.glissando-skip #} ) \relative c'' { \time 6/8 \set glissandoMap = #'((1 . 1)) <a f'>16-> -\tweak layer #-2 \glissando \glissSkip { <a \glissNote ##f #.5 f'>8-. <a \glissNote ##f #0.3 f'>16-. <a \glissNote ##f #.1 f'>8-> << {\glissRest #2.5 r8 s4} \\ {d,8_-_> <a' \glissNote ##f #-0.4 f'>^. <a \glissNote ##f #-.6 f'>^.} >> } \time 2/4 <a a'>2-- } %%%%%%%%%% Thanks a lot! /Leo _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
