Re: glissando

[Aaron Hill]

On 2019-04-01 11:19 pm, Gianmaria Lari wrote:
> AAron, is there any way to move the bend code outside the score part?

That's almost always possible.  Here it is wrapped up in a custom event 
function:

%%%%
\version "2.19.82"

zigzagBendAfter = #(define-event-function (steps) (number?)
  (define (zigzag-stencil grob)
    (let* ((sten (bend::print grob))
           (xex (ly:stencil-extent sten X))
          (yex (ly:stencil-extent sten Y)))
      (ly:grob-set-property! grob 'style 'zigzag)
      (ly:grob-set-property! grob 'thickness 1)
      (ly:line-interface::line grob
        (car xex) (cdr yex) (cdr xex) (car yex))))
  #{ -\tweak stencil #zigzag-stencil -\bendAfter $steps #} )

\fixed c'' { c \zigzagBendAfter #-6 d e f }
%%%%

I switched from grob-transformer to explicitly referencing bend::print.  
This is probably a little safer, since one can then override BendAfter's 
stencil to something else as needed without impacting this zigzag 
variant.


-- Aaron Hill