Re: Can an augmentation dot be parenthesized?

[Lukas-Fabian Moser]

Hi Robert,

 

I would tather like to parenthesize these added augmenation dots but I've not found a way to do that.

I don't know how to parenthesize them, but here is a solution yielding brackets around them:

\version "2.19.44"

#(define (special-bracketify original-stencil len thick protusion padding)

  (let* (

         (left-bracket (ly:bracket Y (cons (- len) len) thick (- protusion)))

         (right-bracket (ly:bracket Y (cons (- len) len) thick protusion)))

    (set! original-stencil

 (ly:stencil-combine-at-edge original-stencil X RIGHT right-bracket (- -0.73 padding)))

    (set! original-stencil

(ly:stencil-combine-at-edge original-stencil X RIGHT left-bracket padding))

    original-stencil))

bracketDot = \once \override Dots.stencil = #(lambda (grob)

    (special-bracketify (ly:dots::print grob) 0.4 0.1 0.2 0)) 

% first number (0.4): bracket length

% second number (0.1): thickness

% third number (0.2): protrusion

% fourth number (0.1): space between dot and brackets

 {

  c''4.

  r8

  \bracketDot

  a'4.

  r8

} 

Question to the experts: If I unterstand my own code correctly :-), the right-hand edge of the dot stencil (used by stencil-combine-at-edge) is the right-most part of the dot itself, while the left-hand edge seems to be the right-most part of the note the dot is attached to.

For this reason I took (for the left bracket) the *right* hand edge of the dot and added offsets with trial-and-error, which should be fine since I assume the dot will have the same size wherever it occurs. But nevertheless there must be a more conceptual way?

Best

Lukas