Re: subito PP

[David Kastrup]

David Kastrup <dak@gnu.org> writes:

> Jean Abou Samra <jean@abou-samra.fr> writes:
>
>> Le 17/07/2022 à 10:11, Benjamin Tordoff a écrit :
>>> Hi all,
>>>
>>> I'm typesetting a score that uses "subito p" and "subito pp" in a couple of 
>>> places. I've found snippets explaining how to get this to look right 
>>> (subito in normal italics, the "p" or "pp" in dynamic font), and another 
>>> snippet showing how to create a custom dynamic that correctly sets the midi 
>>> volume, but not one that does both. What is the best way to add a text 
>>> prefix to a dynamic whilst also retaining the dynamic's effect on MIDI 
>>> output?
>>>
>>> \version "2.23.10"
>>> subPP = \markup{ \italic{sub.} \dynamic pp }
>>>
>>> \score {
>>>    {
>>>      c'2-\ff c'2-\subPP % Volume should be pp but is still ff
>>>    }
>>>    \layout {}
>>>    \midi {}
>>> }
>>
>>
>> How about something like this:
>>
>> \version "2.22.2"
>>
>> subPPMarkup = \markup { \normal-text \italic { sub. } pp }
>> subPP = #(make-dynamic-script subPPMarkup)
>>
>> \midi {
>>   \context {
>>     \Score
>>     dynamicAbsoluteVolumeFunction =
>>       #(lambda (dyn)
>>          (if (equal? dyn subPPMarkup)
>>              0.3
>>              (default-dynamic-absolute-volume dyn)))
>>   }
>> }
>
> It may be more convenient to just tamper with the visuals of a command,
> like
>
> \version "2.22.2"
>
> subx = #(define-event-function (fun) (ly:event?)
>        #{ -\tweak stencil #(lambda (g)
>                              (grob-interpret-markup g
>                               #{ \markup \concat { \with-dimensions #'(0 . 0) 
> #'(0 . 0)
>                                                      \right-align
>                                                    \normal-text \italic "sub. 
> "
>                                                    #(ly:grob-property g 
> 'text) }
>                               #}))
>           #fun #})
>
> subPP = \subx \pp
>
> \score {
>   {
>     c'8\pppp\< d'8 e'8 f'8 g'8 a'8 b'8 c''8 |
>     c''8\fffff b'8 a'8 g'8 f'8\subPP e'8 d'8 c'8 }
>   \layout { }
>   \midi { }
> }
>
>
> Note that I put in some effort to stop "sub." from changing the
> alignment.  If that's undesired, removing
>
>     \with-dimension #'(0 . 0) #'(0 . 0)
>
> should do the trick.

Actually it might make more sense to name this \subito rather than \subx
as you can perfectly well just write \subito \pp in the score without
defining an extra command for it.

-- 
David Kastrup