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List:       lilypond-user
Subject:    Re: Layout of a (piano) hand indicator
From:       Simon Albrecht <simon.albrecht () mail ! de>
Date:       2015-11-30 23:28:41
Message-ID: 565CDBA9.8040400 () mail ! de
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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" (image/png)]

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