Re: Renaissance guitar tablature issues (previously was next issue with renaissance guitar tablature - lines representing sustained notes)

[Leo Correia de Verdier]

If anyone is going to attempt to create a function or engraver for adding those 
slashes automatically there is a thread Urs started last summer about 
Indicating duration with lines where there might be some code worth reusing for 
this. 

> 26 mars 2021 kl. 21:01 skrev Jean Abou Samra <jean@abou-samra.fr>:
> 
> Hello,
> 
> Le 26/03/2021 à 15:23, bart deruyter a écrit :
>> Hey, 
>> 
>> - thanks for the idea, but after some thought, I'm afraid it won't work. 
>> Glissandi don't seem to be the right tool anyway since in the regular staff 
>> I'd have to hide it, and when I'd need a real 'glissando' as glissando, I'd 
>> have to unhide it. I'm sure it would end up being a real mess, certainly 
>> when someone else would edit the file later on. 
>> 
>> I've already tried to find a way to achieve a regular line as sustain line, 
>> if that can be rotated or adjusted, but I only found three styles, text, 
>> bracket and mixed. Is there a way to change it in a regular line and adjust 
>> the angle?
>> Using a sustain pedal-line would be more appropriate because that I could 
>> consistently hide in the regular staff. And that is what these lines 
>> represent anyway. Guitarists, nor lutists use it in a regular staff anyway, 
>> as far as I know, so it could easily be hidden in the regular staff. 
> Hijacking piano pedals is doable. However, I went for a different approach, 
> using the Episema grob. This is much simpler as its callbacks are those from 
> the line-spanner-interface already, and it is contained in the same 
> VerticalAxisGroup as the StaffSymbol (unlike piano pedals which are spaced on 
> a different line, with all the implications to let them join specific staff 
> positions).
> 
>> -My solution for the dots does not seem to be good after all. I've added the 
>> "New_fingering_engraver" to the tabstaff and modified the strokefinger to 
>> show a dot.
>> At first it worked, but when applying it in chords, I get this error: 
>> programming error: no side-axis setting found for grob StrokeFinger.
>> 
>> When the Tabstaff is commented out, lilypond does not complain. When used on 
>> a single note (in the chord, or at a standalone note) lilypond doesn't 
>> complain either. My guess is that TabStaff can't completely handle 
>> fingering, at least not right hand fingering because normally we don't add 
>> fingeringnotation in a tabstaff. Or maybe I have to add another 'consists' 
>> that I'm not aware of?
> 
> A comment in ly/engraver-init.ly tells that Script_column_engraver must come 
> before New_fingering_engraver:
> 
> https://gitlab.com/lilypond/lilypond/-/blob/master/ly/engraver-init.ly#L251
> Thus, one has to \remove the Script_column_engraver and add it later again.
> Note that these two engravers are designed to operate in voice-like contexts, 
> not staff-like contexts.
> 
>> I've added the .ly file in attachment so everyone can see what I'm trying to 
>> achieve (I've omitted the glissando for now).
>> 
>> - This leads me to a third issue I had, but somewhat solved: the font. To 
>> get the right appearance you must have the font installed (= the 'somewhat' 
>> :-) ). It probably will             fallback to a default font if you don't 
>> have it. Today I discovered Musescore appears to have similar fonts for lute 
>> tablature. If french tablature letters can be included in lilyponds default 
>> font, maybe these might be an interesting starting point.
> I can confirm that this renders awfully over here.
> 
> If you want to make a feature request for LilyPond, the bug-lilypond list is 
> the way to go:
> 
> http://lilypond.org/contact.html
> 
> Best,
> Jean
>

Renaissance-tablature.ly
Description: Text Data

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