Re: Triplets

[J Martin Rushton]

On 14/01/17 20:46, Noeck wrote:
> tupletBracketToSlur = {
>   % Use slur-stencil
>   \override TupletBracket.stencil = #ly:slur::print
>   %% Use 'thickness from Slur
>   \override TupletBracket.thickness = #1.2
>   %% 'control-points need to be set
>   \override TupletBracket.control-points =
>     #(lambda (grob)
>       (let* ((x-pos (ly:grob-property grob 'X-positions))
>              (pos (ly:grob-property grob 'positions))
>              (x-ln (interval-length x-pos))
>              (dir (ly:grob-property grob 'direction))
>              ;; read out the height of the TupletBracket, may be
>              ;; negative!
>              (height (- (cdr pos) (car pos)))
>              ;; height-corr is introduced because sometimes the shape
>              ;; of the slur needs to be adjusted.
>              ;; It is used in the 2nd/3rd control-point.
>              ;; The value of 0.3 is found by trial and error
>              (height-corr (* 0.3 dir height))
>              (edge-height (ly:grob-property grob 'edge-height
>                            '(0.7 . 0.7)))
>              (pad 1.0))
>         (list
>           ;; first cp
>           (cons
>             (+ (car x-pos) 0.5)
>             (- (+ (* dir pad) (+ (car pos) (* -1 dir
>                      (car edge-height))))
>               (if (= dir -1)
>                   (if (> height 3)
>                     (/ dir 2.0)
>                     0.0)
>                   (if (< height -3)
>                     (/ dir 2.0)
>                     0.0))))
>           ;; second cp
>           (cons
>             (+ (car x-pos) (* x-ln 1/4))
>             (+ (* dir pad) (+ (car pos) (* dir (+ 0.5 height-corr)))))
>           ;; third cp
>           (cons
>             (+ (car x-pos) (* x-ln 3/4))
>             (+ (* dir pad) (+ (cdr pos) (* dir (- 0.5 height-corr)))))
>           ;; fourth cp
>           (cons
>             (- (cdr x-pos) 0.5)
>             (+ (* dir pad) (+ (cdr pos) (* -1 dir (cdr edge-height)))))
>         )))
>   \override TupletBracket.staff-padding = #'()
>   #(define (invert-direction x) (if (eq? UP
> (ly:tuplet-bracket::calc-direction x)) DOWN UP))
> \override TupletBracket.direction = #invert-direction
> }

I'm afraid that fails identically to the one Richard provided, please
see my response to him.
Thanks,
Martin

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