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lilydrum/lib/musical_functions.ily

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% ================================================= %
% Musical Functions %
% ================================================= %
% Part of lilydrum
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eighthBeaming = {
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\set baseMoment = #(ly:make-moment 1/8)
\set beatStructure = #'( 2 2 2 2)
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}
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eighthReelBeaming = {
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\set baseMoment = #(ly:make-moment 1/8)
\set beatStructure = #'( 4 4 4 4)
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}
eighthCompoundBeaming = {
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\set baseMoment = #(ly:make-moment 1/8)
\set beatStructure = #'( 3 3 3 3)
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}
sixteenthBeaming = {
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\set baseMoment = #(ly:make-moment 1/16)
\set beatStructure = #'( 4 4 4 4)
}
sixteenthReelBeaming = {
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\set baseMoment = #(ly:make-moment 1/16)
\set beatStructure = #'( 8 8 8 8)
}
sixteenthCompoundBeaming = {
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\set baseMoment = #(ly:make-moment 1/16)
\set beatStructure = #'( 6 6 6 6)
}
% triplet
triplet = #(define-music-function (parser location music) (ly:music?) #{ \tuplet 3/2 { $music } #})
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quintuplet = #(define-music-function (parser location music) (ly:music?) #{ \tuplet 5/2 { $music } #})
sextuplet = #(define-music-function (parser location music) (ly:music?) #{ \tuplet 6/4 { $music } #})
% dynamics
v = #(define-event-function (parser location) () #{ \upbow #})
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#(define (text-spanner-start-stop mus)
(let ((elts (ly:music-property mus 'elements)))
(make-music 'SequentialMusic 'elements
(append
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(list (make-music 'TextSpanEvent 'span-direction -1))
(reverse (cdr (reverse elts)))
(list (make-music 'TextSpanEvent 'span-direction 1))
(list (last elts))
)
)
)
)
% dynamics with extended lines
dynLine = #(define-music-function
(parser location text)
(markup?)
#{
\once \override TextSpanner.style = #'line
\once \override TextSpanner.bound-details.left.text = \markup {
\combine
\draw-line #'(0 . -1)
\draw-line #'(1 . 0)
\dynamic #text
}
\once \override TextSpanner.bound-details.right.text = \markup { \draw-line #'(0 . -1) }
#})
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% unison brackets
% TODO: a little 'u'
% TODO: open ended brackets(\odr,\ofr)
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%unisonbracket = {
% \once \override TextSpanner.style = #'line
% \once \override TextSpanner #'to-barline = ##t
% \once \override TextSpanner.bound-details.left.text = \markup {
% \combine
% \combine
% \draw-line #'(0 . -1)
% \draw-line #'(1 . 0)
% \translate #'(1 . -0.5 ) \whiteout \box "u"
% }
% \once \override TextSpanner.bound-details.right.text = \markup { \draw-line #'(0 . -1) }
% \once \override TextSpanner.bound-details.right.attach-dir = #RIGHT
%}
%dr = { \unisonbracket <>\="unison"\startTextSpan }
%fr = { <>\="unison"\stopTextSpan }
%odr = { \unisonbracket <>\="unison"\startTextSpan }
%ofr = { <>\="unison"\stopTextSpan }
dr = #(define-event-function (parser location) () #{ -\tag #'tutti \startGroup #})
fr = #(define-event-function (parser location) () #{ -\tag #'tutti \stopGroup #})
odr = #(define-event-function (parser location) () #{ -\tag #'tutti \startGroup #})
ofr = #(define-event-function (parser location) () #{ -\tag #'tutti \stopGroup #})
rn = #(define-event-function (parser location) () #{ -\tag #'tutti ^\markup \path #0.1 #'((moveto 0 0)(rlineto 0 1)(rlineto 4 0)(rlineto 0 -1)) #})
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#(define (allbutlastnote mus)
"Reverse the elements, Pop of (cdr) the first element, Reverse again, put it in a SequentialMusic"
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(let ((elts (ly:music-property mus 'elements)))
(make-music 'SequentialMusic 'elements (reverse (cdr (reverse elts))))
)
)
#(define (lastnote mus)
"Get the last element, make it a list, put it in a SequentialMusic"
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(let ((elts (ly:music-property mus 'elements)))
(make-music 'SequentialMusic 'elements (list (last elts)))
)
)
tutti =
#(define-music-function (myMusic) (ly:music?)
(define (grace-music-filter event)
(let ((eventname (ly:music-property event 'name)))
(not (eq? eventname 'GraceMusic))))
(let*
(
(music-copy (ly:music-deep-copy myMusic))
(es (extract-typed-music (music-filter grace-music-filter music-copy) 'note-event))
)
(if (> (length es) 1)
#{% multiple notes
\once \override HorizontalBracket.to-barline = ##t
\override HorizontalBracket.connect-to-neighbor = #'(#t #t)
<>\dr
#(allbutlastnote myMusic)
<>\fr
#(lastnote myMusic)
\revert HorizontalBracket.connect-to-neighbor
#}
#{% single note
<>\rn
#myMusic
#}
)
)
)