Re: Shape the angle of a broken hairpin's first part

[Urs Liska]

Hi Harm,

thanks for this, which gives me a handle to the first part of the 
hairpin at least.

But my problem is not solved with the 'height property.


Am 17.09.2018 um 11:49 schrieb Thomas Morley:
> 2018-09-17 8:43 GMT+02:00 Urs Liska <address@hidden>:
> > I have a broken hairpin whose first part is pretty short. As a consequence
> > its internal angle looks too wide for my taste (see attached PNG). I would
> > like to have the two lines wider apart with a narrower angle to more
> > adequately reflect the overall length of the hairpin, similar to the second
> > attached image from the corresponding music without line break.
> >
> > I would only know about the "height" property of a hairpin, but that's not
> > what I need, and it doesn't help me towards tweaking the first part only ...
> >
> > I'd be glad about any suggestions or solution.
> >
> > Thanks
> > Urs
> Hi Urs,
>
> iiuc, you will need to tackle the stencil of the first part. Going
> directly for 'height doesn't work for me. Iirc there are some
> procedures setting the heights of broken hairpins, without the
> possibility to customize it.
>
> But you can set the desired 'height for the selected hairpin-part and
> call the default stencil afterwards . Leading to:
>
> {
>      \override Hairpin.stencil =
>      #(lambda (grob)
>        (let* ((orig (ly:grob-original grob))
>               (siblings (if (ly:grob? orig)
>                             (ly:spanner-broken-into orig) '() )))
>          (if (and (pair? siblings) (equal? grob (car siblings)))
>              (ly:grob-set-property! grob 'height 5))
>          ly:hairpin::print))
>      c'1\<
>      \break
>      s4
>      c'2.\!
> }
> The value 5 is ofcourse only for the show. Adjust as you wish.


See my updated example (only the line with the start of the hairpin is 
changed):

{
    \override Hairpin.stencil =
    #(lambda (grob)
      (let* ((orig (ly:grob-original grob))
             (siblings (if (ly:grob? orig)
                           (ly:spanner-broken-into orig) '() )))
        (if (and (pair? siblings) (equal? grob (car siblings)))
            (ly:grob-set-property! grob 'height 5))
        ly:hairpin::print))
    c'2.... c'32\>
    \break
    s4
    c'2.\!
}

Here you can see nicely how the angles of the first hairpin are too 
steep, it looks like the hairpin would be closed shortly after the 
barline. Is there any way to modify either the angle of that sibling's 
line or for example the "height" at the point where the hairpin is cut off?

Thanks
Urs

> HTH,
>    Harm