Re: Analysis brackets

[Pierre Perol-Schneider]

Hi Michael,

That may work, e.g.:

\version "2.20.0"

#(define-markup-command (lcb layout props arg)
   (number?)
  "Draw a curly bracket with a variable length."
     (interpret-markup layout props
       (markup
         (#:override (cons (quote filled) #t)
          (#:path 0 `(
           (moveto   -0.8   0.0)
           (curveto  -0.2   0.4  -0.3  0.7 -0.3  1.5)
           (lineto   -0.3   ,arg)
           (curveto  -0.4   ,(+ arg 1.3) 0.5 ,(+ arg 2.8) 0.7 ,(+ arg 2.8))
           (curveto   0.6   ,(+ arg 2.5) 0.1 ,(+ arg 2)   0.1 ,arg)
           (lineto    0.1   1.5)
           (curveto   0.1   0.7   0.1   0.0  -0.8   0.0)
           (closepath)
           (curveto  -0.2  -0.4  -0.3  -0.7  -0.3  -1.5)
           (lineto   -0.3   ,(* arg -1))
           (curveto  -0.4   ,(* (+ arg 1.3) -1) 0.5 ,(* (+ arg 2.8) -1) 0.7 ,(* (+ arg 2.8) -1))
           (curveto   0.6   ,(* (+ arg 2.5) -1) 0.1 ,(* (+ arg 2) -1)   0.1 ,(* arg -1))
           (lineto    0.1  -1.5)
           (curveto   0.1  -0.7   0.1   0.0  -0.8   0.0)
           (closepath)))))))


\relative c'' {
  c4 _\markup {
    \with-dimensions-from \null
      \left-align {
        \override #'(baseline-skip . 0)
        \center-column {
          "a" \vspace #-.1
          \rotate #90 \lcb #3
          \vspace #.1 "b"
        }
      }
    } d e
  -\tweak extra-offset #'(0 . -5)
   _\markup {
    \with-dimensions-from \null
      \left-align {
        \override #'(baseline-skip . 0)
        \center-column {
          "a" \vspace #-.1
          \rotate #90 \lcb #5
          \vspace #.1 "b"
        }
      }
    }d c
  b
  -\tweak extra-offset #'(.5 . 3)
  ^\markup {
    \with-dimensions-from \null
      \left-align {
        \override #'(baseline-skip . 0)
        \center-column {
          "a" \vspace #.1
          \rotate #-90 \lcb #6
          \vspace #-.1 "b"
        }
      }
    } a g f e d c
}

HTH,

Cheers,

Pierre

Le jeu. 9 avr. 2020 à 17:27, Michael Taylor <address@hidden> a écrit :

Dear David,

Many thanks for this. I was curious about the curly analysis brackets when I saw this in Snippets http://lsr.di.unimi.it/LSR/Search?q=curly but couldn't figure out how (or if) these 

shapes could be used for what I wanted. The only application I could find was to group an 

ensemble within a larger instrumental contingent.

With best wishes

Michael

On Tue, 7 Apr 2020 at 23:00, David Nalesnik <address@hidden> wrote:

On Tue, Apr 7, 2020 at 11:07 AM Michael Taylor
<address@hidden> wrote:
> Would it be possible in a future version to have the option of placing text within analysis brackets as well as the default above? MT

HorizontalBracketText.direction with a little more tweaking than
should be necessary.

\layout {
  \context {
    \Voice
    \consists "Horizontal_bracket_engraver"
    \override HorizontalBracket.direction = #UP
  }
}

{
  \once\override HorizontalBracketText.direction = #DOWN
  \once\override HorizontalBracketText.text = "a"
  \once\override HorizontalBracketText.padding = #-0.5
  \once\override HorizontalBracket.padding = 1
  c''\startGroup d''\stopGroup
}