Re: Layout of a (piano) hand indicator

[Simon Albrecht]

Hello Urs,

it’s very handy that you just came up with this thread, since I’m 
needing the very thing in a score I just do.
I wrote an event function to nicely wrap up your approach:

%%%%%%%%%%%
\version "2.19.32"

hook =
#(let ((direction? (lambda (n) (= 1 (abs n))))
       (hook-markup #{ \markup \path #0.175 #'((moveto 0 0)
                                               (rlineto -0.85 0)
                                               (rlineto 0 3)) #}))
   (define-event-function (direction on-line) (direction? boolean?)
     (let* ((self-al (if on-line 0.6 0.31))
            (self-al (if (= direction 1) (- self-al) self-al)))
       #{
         \tweak self-alignment-Y $self-al
         \tweak extra-spacing-width #'(-.5 . 0)
         \finger \markup \scale #(cons 1 direction) #hook-markup
       #})))

\layout {
  \context {
    \Voice
    fingeringOrientations = #'(left)
  }
}

{
  <c''-\hook #DOWN ##f> <d''-\hook #UP ##t>
}
%%%%%%%%%%

It’s not quite elegant with its hard-coded values, but it’s easy to use.

Thanks for the ideas,
Simon

On 24.11.2015 23:44, Urs Liska wrote:
> Am 24.11.2015 um 22:39 schrieb Simon Albrecht:
> > On 24.11.2015 18:49, Urs Liska wrote:
> > > Hi all,
> > >
> > > please consider the attached image, especially the "half-bracket" at the
> > > center. This is to indicate that this d' is to be played with the
> > > left hand.
> > >
> > > Is there anything I could improve to the proportions and placement of
> > > that sign?
> > >
> > > Any suggestions for improvement welcome. Suggestions for *not* improving
> > > it even more ;-)
> > I agree that it looks quite good, and that the vertical part should be
> > shorter. Also, the horizontal part could be longer in my eyes.
> > And I’d be very interested in how you did it :-)
> I use a very simple \path. Originally I simply added it as a \markup and
> used extra-offset to position it. But thanks to Abraham's blog post I
> changed that to use a fingering indication. However, I'm not really sure
> this is more reliable (for example against transposition):
>
> So this is what it looks like now:
>
> \set fingeringOrientations = #'(left)
> <d'' \finger
> \markup {
>    \path #0.175
>    #'((moveto 0 -2)
>       (rlineto 0 3)
>       (rlineto 0.85 0)
>       (moveto -1.5 2)) } > 8
>
> Urs
>
> > Yours, Simon

hook.preview.png
Description: PNG image