Re: Smoothing out RepeatTie irregularities between chords?

[Trevor Bača]

Hi David and Pierre,

Ok, it looks like both solutions will work for me, so thank you very much.

And I guess this means it's not necessary to file a bug report, either.

Thanks!

Trevor.

On Fri, Apr 17, 2015 at 6:31 AM, David Nalesnik <address@hidden> wrote:

Hi,

2015-04-16 3:36 GMT+02:00 Trevor Bača <address@hidden>:

Hi,

Using the \shape command to length repeat ties works great between notes. But weird behavior seems to arise with lengthened repeat ties between chords:

### BEGIN ###

\version "2.19.17"

\language "english"

\new Staff \with {

    \shape #'((-2 . 0) (-1 . 0) (-0.5 . 0) (0 . 0)) RepeatTie                 

    \override RepeatTie.X-extent = ##f

} {

    <c' g'>1

    <c' g'>1 \repeatTie

    <c' g'>1 \repeatTie

    <c' g'>1 \repeatTie

}

### END ###

(Image attached.)

Would anyone have any clues as to how to make the repeat ties all have the same length?

In order to use a shape-like command with repeat ties in a chord, we have to get at the individual ties organized by the RepeatTieColumn.

Here's a variant of \shapeTieColumn (at  https://github.com/openlilylib/openlilylib/tree/master/notation-snippets/shaping-bezier-curves/shape-tie-column) which achieves that.  Each tie within the chord is represented with its own list of offsets.

%%%%

\version "2.19.17"

\language "english"

shapeRepeatTieColumn =

#(define-music-function (parser location all-offsets) (list?)

   #{

     \override RepeatTieColumn #'before-line-breaking =

     #(lambda (grob)

        (let ((ties (ly:grob-array->list (ly:grob-object grob 'ties))))

          (for-each

           (lambda (tie offsets-for-tie)

             (if (number-pair-list? offsets-for-tie)

                 (set! (ly:grob-property tie 'control-points)

                       (map

                        (lambda (x y) (coord-translate x y))

                        (ly:semi-tie::calc-control-points tie) offsets-for-tie))))

           ties all-offsets)))

   #})

\new Staff \with {

  \shapeRepeatTieColumn #'(

                            ((-2 . 0) (-1 . 0) (-0.5 . 0) (0 . 0))

                            ((-2 . 0) (-1 . 0) (-0.5 . 0) (0 . 0))

                            )                

  \override RepeatTie.X-extent = ##f

} {

  <c' g'>1

  <c' g'>1 \repeatTie

  <c' g'>1 \repeatTie

  <c' g'>1 \repeatTie

}

%%%%%

HTH,

David

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Trevor Bača
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