2018-08-05 18:14 GMT+02:00 Thomas Morley <thomasmorle...@gmail.com>:
> Inspired by your work I come up with the attached.
Attached an improved and simplified version.
It's tested with 2/3/4-voices divisi, all in one score.
Although not tested, I see no reason why it shouldn't work with even
more voices.
HTH,
Harm
\version "2.19.82"
\pointAndClickOff
%% relies on:
%%
%% VerticalAxisGroup.details.catch-me
%% VerticalAxisGroup.details.combined
%%
%% see inline comments below
%%
%%
%% Limitations:
%% Staves can't be started/ended mid-line.
#(define (divisis divisi-groups)
;; Kill selected other Staffs, if divisi-Staffs are alive.
;; Do it separatly for every instrument-group specified by `divisi-groups`.
(lambda (grob)
;; `grob` is supposed to be `VerticalAlignment`, per default living in
;; Score-context
;;
;; Apply the procedure to every element of `divisi-groups`,
;; p.e. '("flutes" "trumpets")
(for-each
(lambda (group)
(let* (
;; Get all `VerticalAxisGroup`s from `VerticalAlignment`
;; Those are the relevant grobs to look at to make others dead
;; or not
(vags-array (ly:grob-object grob 'elements))
(vags-list
(if (null? vags-array)
'()
(ly:grob-array->list vags-array)))
;; Select only those `VerticalAxisGroup`s related to current
;; `group`
;; Done by comparing the property `details.catch-me` with `group`
(relevant-vags-list
(filter
(lambda (vag)
(equal?
group
(assoc-get 'catch-me (ly:grob-property vag 'details))))
vags-list))
;; Split them into those supposed to contain combinations and
;; others.
;; Done by reading the property `details.combined`. Which is
;; supposed to be a list, containing numbers, representing the
;; combined voices.
;; I.e. if we have 4 flutes, all combined, `details.combined`
;; should be '(1 2 3 4)
;;
(splitted
(call-with-values
(lambda ()
(partition
(lambda (vag)
(pair?
(assoc-get
'combined (ly:grob-property vag 'details) '())))
relevant-vags-list))
(lambda (x y) (list x y)))))
(if (pair? (car splitted))
(for-each
(lambda (i)
;; if divisi staves are alive, kill selected other staves
;; relying on the combined-values
(for-each
(lambda (x)
(ly:pointer-group-interface::add-grob
x 'make-dead-when (list-ref (car splitted) i)))
;; get a list of VerticalAxisGroups used with divisi-staves
(map
(lambda (index) (list-ref (cadr splitted) (1- index)))
;; get the 'combined-value from 'details, which is
;; supposed to be a list.
(assoc-get
'combined
(ly:grob-property
(list-ref (car splitted) i) 'details)
'()))))
(iota (length (car splitted)))))))
divisi-groups)))
%% Short-cuts to switch on/off Staves
%% They should be inserted at line-breaks.
switchOff = \set Staff.keepAliveInterfaces = #'()
switchOn = \unset Staff.keepAliveInterfaces
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXAMPLE
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(set-default-paper-size "a2")
#(set-global-staff-size 15)
\paper {
indent = 20
short-indent = 20
}
%%
%% the actual music
%%
fluteI = \repeat unfold 12 c''2
fluteII = \repeat unfold 12 e'2
trumpetI = \repeat unfold 6 { g'4 c'' e'' c'' }
trumpetII = \repeat unfold 6 { e'4 g' c'' g' }
trumpetIII = \repeat unfold 6 { c'4 e' g' e' }
corI = \repeat unfold 6 { c''2 c''4 c'' }
corII = \repeat unfold 6 { g'2 g'4 g' }
corIII = \repeat unfold 6 { e'2 e'4 e' }
corIV = \repeat unfold 6 { c'2 c'4 c' }
%%
%% controlling divisis
%% colors only for better viewing; ofcourse coding could be more concise
%% p.e. deleting redundant \break-commands, they should likely be part of an
%% own voice anyway; using s1*x etc
%%
%% divisi-Staffs are switched off per default, they may be switched on as wished
%%
%% flutes
combined-flutes-I-II = {
%% 1
\switchOff
s1 \break
%% 2
\switchOn
\override NoteHead.color = #green
s1 \break
%% 3
s1 \break
%% 4
\revert NoteHead.color
\switchOff
s1 \break
%% 5
\switchOn
\override NoteHead.color = #green
s1 \break
%% 6
s1 \break
\revert NoteHead.color
}
%% trumpets
combined-trumpets-I-II-III = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
\switchOn
\override NoteHead.color = #red
s1 \break
%% 4
\revert NoteHead.color
\switchOff
s1 \break
%% 5
s1 \break
%% 6
s1 \break
}
combined-trumpets-I-II = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
s1 \break
%% 4
\switchOn
\override NoteHead.color = #(x11-color 'orange)
s1 \break
%% 5
\revert NoteHead.color
\switchOff
s1 \break
%% 6
s1 \break
}
combined-trumpets-II-III = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
s1 \break
%% 4
s1 \break
%% 5
s1 \break
%% 6
\switchOn
\override NoteHead.color = #yellow
s1 \break
}
%% cors
combined-cors-I-II-III-IV = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
\switchOn
\override NoteHead.color = #red
s1 \break
%% 4
\revert NoteHead.color
\switchOff
s1 \break
%% 5
s1 \break
%% 6
s1 \break
}
combined-cors-I-II = {
%% 1
\switchOff
\switchOn
\override NoteHead.color = #(x11-color 'orange)
s1 \break
%% 2
\revert NoteHead.color
\switchOff
s1 \break
%% 3
s1 \break
%% 4
\switchOn
\override NoteHead.color = #(x11-color 'orange)
s1 \break
%% 5
\revert NoteHead.color
\switchOff
s1 \break
%% 6
s1 \break
}
combined-cors-II-III = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
s1 \break
%% 4
s1 \break
%% 5
s1 \break
%% 6
\switchOn
\override NoteHead.color = #yellow
s1 \break
}
combined-cors-III-IV = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
s1 \break
%% 4
\switchOn
\override NoteHead.color = #(x11-color 'orange)
s1 \break
%% 5
\revert NoteHead.color
\switchOff
s1 \break
%% 6
s1 \break
}
combined-cors-II-III-IV = {
%% 1
\switchOff
s1 \break
%% 2
s1 \break
%% 3
s1 \break
%% 4
\switchOn
\override NoteHead.color = #cyan
s1 \break
%% 5
s1 \break
%% 6
\revert NoteHead.color
\switchOff
s1 \break
}
%% For divisi instruments initiate Staff-contexts for every single instrument.
%% Set `VerticalAxisGroup.details.catch-me` and
%% `VerticalAxisGroup.details.greediness` appropiate. The latter may left unset,
%% if only two instruments participate.
%% Initiate every desired divisi-Staff.
%% Staves meant for divisi should be labed with
%% `VerticalAxisGroup.details.combined = ##t`, appropriate `catch-me` and
%% `greediness'.
%% Again, the latter may left unset, if only two instruments participate.
%% Apply \RemoveAllEmptyStaves to every divisi-Staff.
%%{
\score {
<<
%% A Staff which should not becomes part of any divisi
\new Staff = "up"
\with {
instrumentName = "Picc"
shortInstrumentName = "picc"
}
{ \repeat unfold 48 c''8 }
%% FLUTES
\new StaffGroup
\with {
\override SystemStartBracket.collapse-height = 1
instrumentName = \markup { \rotate #90 "FLUTES" \hspace #16 }
shortInstrumentName = \markup { \rotate #90 "FLUTES" \hspace #16 }
}
<<
\new Staff = "fl1"
\with {
instrumentName = "Fl 1"
shortInstrumentName = "Fl 1"
\override VerticalAxisGroup.details.catch-me = "flutes"
}
\fluteI
\new Staff = "fl2"
\with {
instrumentName = "Fl 2"
shortInstrumentName = "Fl 2"
\override VerticalAxisGroup.details.catch-me = "flutes"
}
\fluteII
\new Staff = "fl1+2"
\with {
instrumentName = "Fl 1+2"
shortInstrumentName = "Fl 1+2"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "flutes"
\override VerticalAxisGroup.details.combined = #'(1 2)
}
\new Voice
<<
\combined-flutes-I-II
\fluteI \fluteII
>>
>>
%% TRUMPETS
\new StaffGroup
\with {
\override SystemStartBracket.collapse-height = 1
instrumentName = \markup { \rotate #90 "TUMPETS" \hspace #16 }
shortInstrumentName = \markup { \rotate #90 "TRUMPETS" \hspace #16 }
}
<<
\new Staff = "tr1"
\with {
instrumentName = "Tr 1"
shortInstrumentName = "Tr 1"
\override VerticalAxisGroup.details.catch-me = "trumpets"
}
\trumpetI
\new Staff = "tr2"
\with {
instrumentName = "Tr 2"
shortInstrumentName = "Tr 2"
\override VerticalAxisGroup.details.catch-me = "trumpets"
}
\trumpetII
\new Staff = "tr3"
\with {
instrumentName = "Tr 3"
shortInstrumentName = "Tr 3"
\override VerticalAxisGroup.details.catch-me = "trumpets"
}
\trumpetIII
\new Staff = "tr1+2+3"
\with {
instrumentName = "Tr 1+2+3"
shortInstrumentName = "Tr 1+2+3"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.combined = #'(1 2 3)
\override VerticalAxisGroup.details.catch-me = "trumpets"
}
\new Voice
<<
\combined-trumpets-I-II-III
\trumpetI \trumpetII \trumpetIII
>>
\new Staff = "tr1+2"
\with {
instrumentName = "Tr 1+2"
shortInstrumentName = "Tr 1+2"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "trumpets"
\override VerticalAxisGroup.details.combined = #'(1 2)
alignAboveContext = "tr3"
}
\new Voice
<<
\combined-trumpets-I-II
\trumpetI \trumpetII
>>
\new Staff = "tr2+3"
\with {
instrumentName = "Tr 2+3"
shortInstrumentName = "Tr 2+3"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "trumpets"
\override VerticalAxisGroup.details.combined = #'(2 3)
alignBelowContext = "tr1+2"
}
\new Voice
<<
\combined-trumpets-II-III
\trumpetII \trumpetIII
>>
>>
%% CORS
\new StaffGroup
\with {
\override SystemStartBracket.collapse-height = 1
instrumentName = \markup { \rotate #90 "CORS" \hspace #16 }
shortInstrumentName = \markup { \rotate #90 "CORS" \hspace #16 }
}
<<
\new Staff = "c1"
\with {
instrumentName = "Cor 1"
shortInstrumentName = "Cor 1"
\override VerticalAxisGroup.details.catch-me = "cors"
}
\corI
\new Staff = "c2"
\with {
instrumentName = "Cor 2"
shortInstrumentName = "Cor 2"
\override VerticalAxisGroup.details.catch-me = "cors"
}
\corII
\new Staff = "c3"
\with {
instrumentName = "Cor 3"
shortInstrumentName = "Cor 3"
\override VerticalAxisGroup.details.catch-me = "cors"
}
\corIII
\new Staff = "c4"
\with {
instrumentName = "Cor 4"
shortInstrumentName = "Cor 4"
\override VerticalAxisGroup.details.catch-me = "cors"
}
\corIV
\new Staff = "c1+2+3+4"
\with {
instrumentName = "Cors 1+2+3+4"
shortInstrumentName = "Cors 1+2+3+4"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.combined = #'(1 2 3 4)
\override VerticalAxisGroup.details.catch-me = "cors"
}
\new Voice
<<
\combined-cors-I-II-III-IV
\corI \corII \corIII \corIV
>>
\new Staff = "c1+2"
\with {
instrumentName = "Cors 1+2"
shortInstrumentName = "Cors 1+2"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "cors"
\override VerticalAxisGroup.details.combined = #'(1 2)
alignAboveContext = "c3"
}
\new Voice
<<
\combined-cors-I-II
\corI \corII
>>
\new Staff = "c2+3"
\with {
instrumentName = "Cors 2+3"
shortInstrumentName = "Cors 2+3"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "cors"
\override VerticalAxisGroup.details.combined = #'(2 3)
alignAboveContext = "c4"
}
\new Voice
<<
\combined-cors-II-III
\corII \corIII
>>
\new Staff = "c3+4"
\with {
instrumentName = "Cors 3+4"
shortInstrumentName = "Cors 3+4"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "cors"
\override VerticalAxisGroup.details.combined = #'(3 4)
alignBelowContext = "c1+2"
}
\new Voice
<<
\combined-cors-III-IV
\corIII \corIV
>>
\new Staff = "c2+3+4"
\with {
instrumentName = "Cors 2+3+4"
shortInstrumentName = "Cors 2+3+4"
\RemoveAllEmptyStaves
\override VerticalAxisGroup.details.catch-me = "cors"
\override VerticalAxisGroup.details.combined = #'(2 3 4)
alignBelowContext = "c1"
}
\new Voice
<<
\combined-cors-II-III-IV
\corII \corIII \corIV
>>
>>
%% A Staff which should not becomes part of any divisi
\new Staff = "bass"
\with {
instrumentName = "Bass"
shortInstrumentName = "Bass"
}
{ \clef bass \repeat unfold 6 c1 }
>>
\layout {
\context {
\Score
\override VerticalAlignment.before-line-breaking =
#(divisis '("flutes" "trumpets" "cors"))
}
}
}
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