Dear Michael, Jean,
thank you for the help and the suggestions, and for replying so quickly!
Now, I'll read accurately Jean's site! :-)
Luca
Il 13/05/23 15:47, Jean Abou Samra ha scritto:
Le samedi 13 mai 2023 à 14:13 +0200, Luca Rossetto Casel a écrit :
Hello everyone,
I'm working on an example for a musicological paper. I was requested
to highlight some notes drawing a colored circle around them. I found
the snippet
https://lsr.di.unimi.it/LSR/Item?id=722
and I tried to adapt it to my needs... but without success (I didn't
ever studied Scheme, but I'd like to learn how to use it: all I was
able to do is to change the color of the circle /and/ the notehead).
How can I change the color of the circle, leaving the notehead black?
Thanks in advance!!!
Re "I'd like to learn how to use Scheme": are you aware of
https://extending-lilypond.gitlab.io ?
With that being said, this can be refactored to use markup, making it
perhaps more familiar for someone without Scheme background:
|\version "2.24.1" circleB = \once \override NoteHead.stencil =
#(grob-transformer 'stencil (lambda (grob original)
(grob-interpret-markup grob #{ \markup \with-outline \stencil
#original \overlay { \stencil #original \align-on-other #X #CENTER
\stencil #original #CENTER \draw-circle #1.5 #0.1 ##f } #}))) {
\circleB c'' \circleB c'' \circleB c''2 \circleB c''1 \circleB c''8
\circleB a'8 \circleB b'16 \circleB c''16 \circleB b'16 \circleB a'16
\circleB f'2 } |
You can then add |\with-color "red"| before |\draw-circle| or do other
transformations.
Jean
