Re: Creating arbitrary/isolated RepeatSlash objects

[Galen Hazelwood]

Thank you very much--that worked perfectly.

--Galen

On Sun, Aug 21, 2022 at 10:52 AM Jean Abou Samra <jean@abou-samra.fr> wrote:

Le 21/08/2022 à 03:15, Galen Hazelwood a écrit :
> Hello all.
>
> I have another question, this time about percent repeats. I'm
> repeating a long, complex keyboard figure which extends across both
> staves, and using a combination of MagnifyMusic reduction and percent
> repeats to keep things manageable. The only thing is that the repeat
> slashes only appear on one staff; I'd like to mirror them in the
> other, just so things look symmetric.
>
> There's a function in the documentation for generating arbitrary
> percent figures in the score...
> makePercent =
> #(define-music-function (note) (ly:music?)
>     "Make a percent repeat the same length as NOTE."
>     (make-music 'PercentEvent
>                 'length (ly:music-length note)))
> ...so I assumed I could just substitute a RepeatSlashEvent for the
> Percent Event. Turns out I can't; it compiles fine, but throws an
> error when I try to use it.
>
> ERROR: Wrong type (expecting exact integer): ()
>
> I could just shove the repeat slashes into the middle between the
> staves, but I'd rather have them mirrored if I could. Is there some
> way to make a function like this that works, or is there a completely
> different path that makes more sense?



In the lower staff, instead of

   s1 s1 s1

use

   \repeat percent 6 { \repeat unfold 16 { s32 } }

You have to use \repeat unfold 16 { s32 } instead of s2 because
the durations inside \repeat percent determine how many slashes
are printed.

Cheers,
Jean