Hi Alasdair,
Am 07.08.23 um 07:05 schrieb Alasdair McAndrew:
In fact you can just look at the snippet at
https://lsr.di.unimi.it/LSR/Item?id=848 I've set mine up slightly
differently, with letters between the lines, but the principle is the
same. But as you see from this snippet, you have to enter the notes
and values for the tablature stave, and the note durations again (with
appropriate "silent" notes) for the rhythm stave. And both these
staves have to be created independently and put together at the end.
I want to know if you can do this without having to enter the rhythm
durations and stave separately - the information in "myNotes" in the
snippet contains all the information needed. I'm hoping for a solution
where all you need to enter is "myNotes", and then both the tablature
staff and the rhythm staff would be created in one go.
Thank you again.
That's basically a matter of programmatically turning the given music
into bare (pitch-less) durations while skipping repeated durations.
Question: What should be done for actual rests in the input?
One possible approach might be:
\version "2.24.0"
%% http://lsr.di.unimi.it/LSR/Item?id=848
%LSR modified by P.P.Schneider on Feb.2014 for v2.18
% modified by L.-F. Moser in Aug. 2023
% (added \extractRhythm and \tabStaves)
%{ Tablature layout for viol music
The snippet defines a specialized group of rhythmic and
tablature staves able to handle old english viol tablature
scores.
The string tunings defaults to the most common viol in d
but other usual tunings are also available.
The rhythm part is used to provide only the pace changes,
and therefore must be provided as a supplementary voice.
%}
viol-in-d-tuning = \stringTuning <d, g, c e a' d'>
viol-in-d-scord-tuning = \stringTuning <c, g, c e a' d'>
viol-in-g-tuning = \stringTuning <g, c f a' d' g''>
ViolTabLayout = \layout {
\context {
\RhythmicStaff
\type "Engraver_group"
\name "ViolTabRhythmicStaff"
\alias "RhythmicStaff"
\description "Handles rhythm part of viol tablature."
\remove "Time_signature_engraver"
\remove "Staff_symbol_engraver"
\remove "Bar_engraver"
fontSize = #-3
\override StaffSymbol.staff-space = #(magstep -3)
\override Stem.length = #5
\override VerticalAxisGroup.staff-staff-spacing =
#'((basic-distance . 1)
(minimum-distance . 1)
(padding . 1))
% useful to merge chords noteheads
\override NoteHead.X-offset = #0
}
\context {
\TabStaff
\type "Engraver_group"
\name "ViolTabFingeringStaff"
\alias "Staff"
\description "Handles fingering part of viol tablature."
tablatureFormat = #fret-letter-tablature-format
stringTunings = #viol-in-d-tuning
% useful for tablature only scores
\revert TimeSignature.stencil
\override TimeSignature.style = #'single-digit
}
\context {
\type "Engraver_group"
\name "ViolTabStaff"
\consists "Vertical_align_engraver"
topLevelAlignment = ##f
\description "Handles viol tablature."
\defaultchild "ViolTabFingeringStaff"
\accepts "ViolTabRhythmicStaff"
\accepts "ViolTabFingeringStaff"
}
\context {
\Score
\accepts "ViolTabStaff"
}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(define rest-or-skip?
(music-type-predicate '(skip-event general-rest-event)))
extractRhythm =
#(define-music-function (mus) (ly:music?)
(make-music
'SequentialMusic
'elements
(let loop
((remaining-notes
(extract-typed-music (event-chord-reduce mus)
'rhythmic-event))
(current-duration #f))
(if
(null? remaining-notes)
'()
(let*
((note (car remaining-notes))
(duration (ly:music-property note 'duration)))
(cons
(make-music
(if (or (rest-or-skip? note)
(equal? duration current-duration))
'SkipEvent
'NoteEvent)
'duration duration)
(loop (cdr remaining-notes)
(if (rest-or-skip? note) current-duration duration))))))))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tabStaves =
#(define-music-function (mus) (ly:music?)
#{
<<
\new Staff \with { \clef bass } {
#mus
}
\new ViolTabStaff {
<<
\new ViolTabRhythmicStaff {
\extractRhythm $mus
}
\new ViolTabFingeringStaff { #mus }
>>
}
>>
#})
myNotes = \relative c {
<d, g d'>4 e f8 g a4
<d b g>2. c4
d4. e8 f4 g
r8 g g f e4 a
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\score {
\tabStaves \myNotes
\layout {
\ViolTabLayout
}
}
Lukas
