> > Is it possible to "decorate" drum notes? Such a decoration is meant to
> > indicate
> > a specific way of hitting the instrument.
> >
> > For example, after a gong note (represented below with a triangle head),
> > there
> > should be a tilde-like "decoration" (to indicate that it must be scratched
> > with
> > a metallic rod):
> >
> > |>~
> > |
> >
>
> Can't anyone help me with this?
>
> I assume it's done by changing the note head.
> Is there an example in the manual? Where?
Based on "molecule-hacking.ly" in "Regression Tests", I've come
up with the following:
-------
#(define (scratch-callback callback)
(define (scratch-stencil grob)
(let* ((fn (ly:get-default-font grob))
(dgrace (ly:find-glyph-by-name fn "flags-dgrace"))
(darrow (ly:find-glyph-by-name fn "scripts-arpeggio-arrow--1"))
(scratch (ly:stencil-add dgrace
(ly:stencil-translate darrow '(0.95 .
-0.2))))
(subject (callback grob)))
(set! subject
(ly:stencil-combine-at-edge subject 0 1
(ly:stencil-translate-axis scratch
-0.8 1)
0.0))
subject))
scratch-stencil)
-------
which produces a "twisted" arrow, reminiscent of the path
of the rod on the gong, sort of ;-}
Gilles
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