Hello Yoann,
Maybe starting this way:
\version "2.19.83"
{
% initial shared music
c'1 e |
% the two alternatives
\override Staff.StaffSymbol.line-count = 0
\stopStaff \startStaff
\hide Staff.BarLine
<<
\new Staff {
\hide Staff.Clef
\hide Staff.KeySignature
\hide Staff.TimeSignature
d' a' d'' |
}
\new Staff {
\hide Staff.Clef
\hide Staff.KeySignature
\hide Staff.TimeSignature
g' b' e'' |
}
>>
\override Staff.StaffSymbol.line-count = 5
\stopStaff \startStaff
\undo\hide Staff.BarLine
% next shared music
ais' bes' |
}
and then force a barline at the end of measure 2, move the two alternative
staves fragments higher, and remove the dangling lines at the left of the two
alternatives?
JM
> Le 19 nov. 2019 à 03:45, Yoann LE BARS <yo...@le-bars.net> a écrit :
>
>
> Hello everybody out there!
>
> I must write a score for several instruments. In this score, interprets
> must several times choose between two alternatives. To symbolize these
> choices, the staff is split in two, every staff being linked to the
> other with an opening angle bracket (“<”). At the beginning of a new
> line, staffs are also linked with an angle opening bracket. The end of
> alternative is symbolized with a closing angle bracket (“>”). I have
> created a hand-made example (without notes) you can see here:
>
> https://cloud.le-bars.net/index.php/s/zIIqGlcSa3XCdi4
>
> I am quite certain it can be done with Lilypond, but I do not have a
> clue how to do it. Therefore, I have prepared some code available here:
>
> http://lilybin.com/tjc9ai/3
>
> I have also copied this code at the end of this message.
>
> There are two instruments in this example, a flute and a clarinet
> (clarinet is written in French, i.e. “clarinette”, in variable names).
> For this two instruments, there is four section A, B, C and D. In
> section B and C, they have two choices: Ba and Bb as well as Ca and Cb.
> Therefore, fluteBa must be superposed over fluteBb, as well as fluteCa
> over fluteCb, clarinetteBa over clarinetteBb and clarinetteCa over
> clarinetteCb in the way presented in my hand-made example.
>
> Well, I hope this is understandable. Does anyone have an idea how to do
> this?
>
> Best regards.
>
> \version "2.18.2"
>
> #(define (chiffr-triche grob)
> (grob-interpret-markup grob
> (markup #:override '(baseline-skip . 0)
> (#:line ((#:center-column (#:number "9" #:number "8")))))))
>
> \paper {
> indent = 3\cm
> short-indent = 1.5\cm
> }
>
> \layout {
> \context {
> \Score
> \remove "Timing_translator"
> \remove "Default_bar_line_engraver"
> }
> \context {
> \Staff \RemoveEmptyStaves
> \consists "Timing_translator"
> \consists "Default_bar_line_engraver"
> }
> }
>
> fluteA = {
> \time 4/4
> \relative c' {
> \repeat unfold 12 {c8 d e f}
> }
> }
>
> fluteBa = {
> \bar "||"
> \once \override Staff.TimeSignature.stencil = #chiffr-triche
> \time 3/4
> \relative c' {
> \repeat unfold 12 {c8*2/3[d e]}
> }
> }
>
> fluteBb = {
> \bar "||"
> \once \override Staff.TimeSignature.stencil = #chiffr-triche
> \time 3/4
> \relative c' {
> \repeat unfold 12 {e8*2/3[d c]}
> }
> }
>
> fluteCa = {
> \bar "||"
> \time 4/4
> \relative c' {
> \repeat unfold 12 {c8 d e f}
> }
> }
>
> fluteCb = {
> \bar "||"
> \time 4/4
> \relative c' {
> %f8 e d c \bar "" \break
> \repeat unfold 12 {f8 e d c}
> }
> }
>
> fluteD = {
> \relative c' {
> c8 d e f e d c4~ c1 \bar "|."
> }
> }
>
> clarinetteA = {
> \time 4/4
> \relative c' {
> \repeat unfold 16 {e8 f g a}
> }
> }
>
> clarinetteBa = {
> \bar "||"
> \once \override Staff.TimeSignature.stencil = #chiffr-triche
> \time 3/4
> \relative c' {
> e8*2/3[f g] \bar "" \break
> \repeat unfold 11 {e[f g]}
> }
> }
>
> clarinetteBb = {
> \bar "||"
> \once \override Staff.TimeSignature.stencil = #chiffr-triche
> \time 3/4
> \relative c' {
> g'8*2/3[f e] \bar "" \break
> \repeat unfold 11 {g[f e]}
> }
> }
>
> clarinetteCa = {
> \bar "||"
> \time 4/4
> \relative c' {
> \repeat unfold 8 {a'8 g f e}
> }
> }
>
> clarinetteCb = {
> \bar "||"
> \time 4/4
> \relative c' {
> \repeat unfold 8 {e8 f g a}
> }
> }
>
> clarinetteD = {
> \relative c' {
> f8 g a b a g f4~ f1 \bar "|."
> }
> }
>
> \score {
> <<
> \accidentalStyle Score.modern-cautionary
> \new Staff \with {
> instrumentName = #"Flûte"
> shortInstrumentName = #"Fl."
> }
> {
> \fluteA
> \fluteBa
> \fluteCa
> \fluteD
> }
>
> \new Staff \with {
> instrumentName = \markup {\concat {"Clarinette en Si" \flat}}
> shortInstrumentName = \markup {\concat {"Clar. Si" \flat}}
> }
> {
> \clarinetteA
> \clarinetteBa
> \clarinetteCa
> \clarinetteD
> }
>>>
> }
>
> --
> Yoann LE BARS
> http://le-bars.net/yoann/
> Diaspora* : yleb...@framasphere.org
>
