Andrew,
On Tuesday, November 22, 2016, Andrew Bernard <andrew.bern...@gmail.com>
wrote:
> Greetings All,
>
>
>
> With the reasonably complex contemporary music that I engrave for my
> colleague, I often come across situations where lilypond spaces note stems
> in a beamed group unevenly, but we would like them to be equally spaced.
> Lilypond is certainly doing the right thing, but we particularly want an
> optically even spacing rather than the probably technically correct
> engraving practice that lilypond produces.
>
>
>
> I use proportional spacing in my actual scores, but have not included that
> in the MWE, as it makes no difference. The MWE here shows the uneven
> spacing of the stems in the grace note figures. It would be excellent if I
> could shift the note columns around to even this up visually. I am not
> saying this is a bug – just an effect I would like to have control over.
>
>
>
> A function would be nice, as I have hundreds of these cases. Is this
> possible by any stretch of the imagination?
>
>
>
> [Sorry this is a bit unminimal but I need to illustrate the matter
> exactly, and I wanted to show two examples of this, from an actual score.]
>
>
>
> Andrew
>
>
>
> == snip
>
>
>
> \version "2.19.50"
>
>
>
> treble = {
>
> \clef treble
>
> \time 1/4
>
>
>
> c'4
>
> <g' bes'>16 <fis' bes'>16. <b' dis''>16
>
> <fis' g'>32
>
> c'4
>
> }
>
>
>
> bass = {
>
> \clef treble
>
> \time 1/4
>
>
>
> c'4
>
>
>
> \override Beam.positions = #'(5 . 5)
>
> \grace {
>
> \set tieWaitForNote = ##t
>
> b8[ _~ c' _~ d' ^~ ees' ^~
>
> \change Staff = treble \stemDown
>
> g']
>
> \change Staff = bass \stemUp
>
> }
>
> \once \override Beam.positions = #'(4 . 4)
>
>
>
> <b c' d' ees'>8..[
>
> \grace {
>
> \set tieWaitForNote = ##t
>
> a8[ _~ c' _~ des' _~ e' ^~
>
> \change Staff = treble \stemDown
>
> fis']
>
> \change Staff = bass \stemUp
>
> }
>
> <a c' des' e'>32] |
>
>
>
> c'4
>
> }
>
>
>
> \score {
>
>
>
> \new PianoStaff
>
> <<
>
> \new Staff = "treble" \treble
>
> \new Staff = "bass" \bass
>
> >>
>
>
>
> \layout {
>
> \context {
>
> \Score
>
> \accidentalStyle Score.dodecaphonic
>
> }
>
> }
>
> }
>
> == snip
>
Have a look in the IR at the grob SpacingSpanner. It's properties control
all the optical spacing functionality. You can turn off/on the optical
properties whenever you want.
HTH,
Abraham
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