Re: Explicit placement of rests in a percussion staff

[David Kastrup]

Aaron Hill <lilypond@hillvisions.com> writes:

> On 2021-02-27 3:10 am, David Kastrup wrote:
>> [...] Which begs the
>> question whether it would not make sense to let Rest_engraver look at
>> drum-type in the same manner it looks at pitch for the sake of
>> potentially resolving the drum-type to staff-position mapping.
>
> I'm not a percussionist; but it would seem reasonable for "sn \rest"
> to work the same as "fis \rest".
>
> I take it parser.yy would need updating to something like this:
>
> ////
> simple_element:
>   DRUM_PITCH optional_notemode_duration optional_rest {
>     Music *n = 0;
>     if (scm_is_true ($3))
>       n = MY_MAKE_MUSIC ("RestEvent", @$);
>     else
>       n = MY_MAKE_MUSIC ("NoteEvent", @$);
>     set_property (n, "duration", $2);
>     set_property (n, "drum-type", $1);
>
>     $$ = n->unprotect ();
>   }
> ////

Yes, something like that.  The main question is just to what degree
factoring out code from Drum_notes_engraver makes sense or whether one
would just hard-code inline the more limited extraction of just the
position.

-- 
David Kastrup