Re: Shorten one end of a trill spanner manually?

[Trevor Bača]

On 1/8/07, Trevor Bača <address@hidden> wrote:
> On 1/8/07, Han-Wen Nienhuys <address@hidden> wrote:
> > Trevor Bača escreveu:
> > > Hi,
> > >
> > > Is there any way to shoren one end (the right end) of a trill spanner by
> > > hand?
> > >
> > > Something like ...
> > >
> > >  \once \override TrillSpanner #'shorten-pair = #'(0 . 2)
> > >
> > > ... would be ideal.
> >
> > the easiest I can think of is to shorten the spanner with bound-padding,
> > and shift it a bit to the left.
>
> Playing with bound-padding, it looks like bound-padding has the
> unfortunate effect of creating a gap at the *left* end of the trill
> spanner (opening up space between the "tr" and the beginning of the
> trill line) rather than at the *right* end (which is where the
> whitespace needs to open up instead).
>
> %%% BEGIN BOUND PADDING %%%
>
> \version "2.11.7"
>
> \new Staff {
>    \once \override TrillSpanner #'bound-padding = #4
>    \once \override TrillSpanner #'extra-offset = #'(-4 . 0)
>    c'4 \startTrillSpan
>    c'4 \stopTrillSpan \startTrillSpan
>    c'4 \stopTrillSpan
>    c'4
> }
>
> %%% END %%%

Beginning in 2.11.14 there is now an explicit solution to this problem
of shortening left or right ends of spanners precisely.

The property in question is bound-details and many of the different
spanner grobs (such as TrillSpanner, TextSpanner and Glissando)
implement it.

%%% BEGIN BOUND-PADDING EX %%%

\version "2.11.14"

\new Staff {
 \override TrillSpanner #'bound-details #'right #'padding = #2
 c'4 \startTrillSpan
 \revert TrillSpanner #'bound-details #'right
 c'4 \stopTrillSpan \startTrillSpan
 c'4 \stopTrillSpan
 c'4
}

%%% END %%%


This puts an end to the need to use the multiplication-scaled skip
hack to shorten the right end of hairpins and the like.

(Note also four arguments to override instead of the usual three.)

Some other example bound-details subproperties appear in the 2.11 NEWS file.


--
Trevor Bača
address@hidden