On 2022-01-25 11:46 am, Rachel Green wrote:
Hi, I’m trying to adjust the glissandi in this excerpt so that the lines are parallel and not too close to each other. I found some settings for adjusting a single glissando, but not for a double glissando. Any ideas?
There is prior work on this subject. Harm has provided some code [1] before.
[1]: https://lists.gnu.org/archive/html/lilypond-user/2013-08/msg00547.html
Here is an adaptation of that logic: %%%% glissandoTweak = #(define-music-function (after? tweaks) ((boolean? #t) list?) (define (proc grob) (if after? (ly:spanner::kill-zero-spanned-time grob)) (for-each (lambda (x) (let ((prop (car x)) (value (cdr x))) (if (key-list? prop) (ly:grob-set-nested-property! grob prop value) (ly:grob-set-property! grob prop value)))) (ly:assoc-get (ly:grob-property grob 'glissando-index) tweaks '()))) (if after? #{ \once \override Glissando.after-line-breaking = #proc #} #{ \once \override Glissando.before-line-breaking = #proc #})) { \glissandoTweak #`((0 . ((color . ,red) (Y-offset . -0.5))) (1 . ((color . ,blue) ((bound-details right arrow) . #t)))) <c' e'>2\glissando <g'' b''> } %%%% -- Aaron Hill