Hmm... the code:
{
\override Tie.after-line-breaking =
#(lambda (grob)
(display (ly:grob-property grob 'control-points))
(newline))
c'1~ c'1
}
doesn't work for me. I see no control points (nor the numbers).
Meanwhile, I've found this:
===========
#(define
(make-cross-stencil coords)
(ly:stencil-add
(make-line-stencil 0.1
(-
(car coords) 0.2
)
(-
(cdr coords) 0.2)
(+
(car coords) 0.2)
(+
(cdr coords) 0.2))
(make-line-stencil 0.1
(-
(car coords) 0.2)
(+
(cdr coords) 0.2)
(+
(car coords) 0.2)
(-
(cdr coords) 0.2))))
#(define
(display-control-points line)
(lambda
(grob)
(let
((stencil
(ly:tie::print grob))
(cps
(ly:grob-property grob 'control-points)))
(ly:stencil-add stencil
(ly:stencil-in-color
(make-cross-stencil
(second cps)) 1 0 0)
(ly:stencil-in-color
(make-cross-stencil
(third cps)) 1 0 0)
(if
(eq? line #t)
(make-line-stencil 0.05
(car
(second cps))
(cdr
(second cps))
(car
(third cps))
(cdr
(third cps))) empty-stencil)))))
{
\override Tie #'stencil = #(display-control-points #t)
}
===========
... but it shows only the points, not the x,y_numbers.
Dnia 20-10-2013 o godz. 1:56 David Nalesnik napisał(a):
Karol,
On Sat, Oct 19, 2013 at 6:22 PM, Karol Majewski <karo...@wp.pl> wrote:
Thank you, David, it works indeed! I know that this is not exactly what I asked for but it is a good starting point.
Â
Now the question: is it possible for LilyPond to show control_point_values of ties?
 Let's say I have something like:Â
=====
\version "2.17.28"
{
c'1~ c'1
}Â
=====
Â
and want LilyPond to show me all control points of that tie.
Â
Is this viable?
Sure. Â You'll notice that the function I sent works with the control points of each tie in the column, Â Displaying them is straightforward:{
\override Tie.after-line-breaking =
#(lambda (grob)
 (display (ly:grob-property grob 'control-points))
 (newline))
 c'1~ c'1
}
Â
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