1 %% DO NOT EDIT this file manually; it is automatically
2 %% generated from LSR http://lsr.di.unimi.it
3 %% Make any changes in LSR itself, or in Documentation/snippets/new/ ,
4 %% and then run scripts/auxiliar/makelsr.py
6 %% This file is in the public domain.
10 lsrtags = "automatic-notation, really-cool, scheme-language"
13 A lilypond score internally is just a Scheme expression, generated by
14 the lilypond parser. Using scheme, one can also automatically generate
15 a score without an input file. If you have the music expression in
16 scheme, a score can be generated by simply calling (scorify-music music) on your music. This will generate a score object, for which you
17 can then set a custom layout block with (let* ((layout
18 (ly:output-def-clone $defaultlayout)))
19 ; modify the layout here, then assign it:
20 (ly:score-add-output-def! score layout)
24 Finally, all you have to do it to pass this score to lilypond for
25 typesetting. This snippet defines functions @code{(add-score
26 score)}, @code{(add-text text)} and @code{(add-music
27 music)} to pass a complete score, some markup or some music to lilypond
30 This snippet also works for typesetting scores inside a @code{\\book
31 @{...@}} block, as well as top-level scores. To achieve this, each
32 score schedulled for typesetting is appended to the list of toplevel
33 scores and the toplevel-book-handler (which is a scheme function called
34 to process a book once a @code{\\book@{..@}} block is closed) is
35 modified to inser all collected scores so far to the book.
38 doctitle = "Generating whole scores (also book parts) in scheme without using the parser"
42 #(define-public (add-score score)
43 (ly:parser-define! 'toplevel-scores
44 (cons score (ly:parser-lookup 'toplevel-scores))))
46 #(define-public (add-text text)
47 (add-score (list text)))
49 #(define-public (add-music music)
50 (collect-music-aux (lambda (score)
54 #(define-public (toplevel-book-handler book)
56 (ly:book-add-score! book score))
57 (reverse! (ly:parser-lookup 'toplevel-scores)))
58 (ly:parser-define! 'toplevel-scores (list))
59 (print-book-with-defaults book))
61 #(define-public (book-score-handler book score)
64 #(define-public (book-text-handler book text)
67 #(define-public (book-music-handler book music)
73 %% Just some example score to show how to use these functions:
74 #(define add-one-note-score #f)
76 (set! add-one-note-score
78 (let* ((music (make-music 'EventChord
79 'elements (list (make-music 'NoteEvent
80 'duration (ly:make-duration 2 0 1/1)
81 'pitch (ly:make-pitch 0 pitch 0)))))
82 (score (scorify-music music))
83 (layout (ly:output-def-clone $defaultlayout))
84 (note-name (case pitch
93 (title (markup #:large #:line ("Score with a" note-name))))
94 (ly:score-add-output-def! score layout)
97 (set! pitch (modulo (1+ pitch) 7)))))
100 #(define-music-function () ()
101 (add-one-note-score (*parser*))
102 (make-music 'Music 'void #t))
116 % Top-level scores are also handled correctly