X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fmusic-functions.scm;h=e7728ec8893fa6e128b71d9be9d9b2be01b3f990;hb=8a493b7bc9aa4d34cd2970fc2223ec6920f0ed02;hp=d5a4b2478a00acce7fa6b18ca72c7dcee2a64f97;hpb=16d46fb0995cc6d078617ada1e8fea7879dffe07;p=lilypond.git diff --git a/scm/music-functions.scm b/scm/music-functions.scm index d5a4b2478a..e7728ec889 100644 --- a/scm/music-functions.scm +++ b/scm/music-functions.scm @@ -82,31 +82,33 @@ First it recurses over the children, then the function is applied to (define-public (music-filter pred? music) "Filter out music expressions that do not satisfy @var{pred?}." - (define (inner-music-filter pred? music) + (define (inner-music-filter music) "Recursive function." (let* ((es (ly:music-property music 'elements)) (e (ly:music-property music 'element)) (as (ly:music-property music 'articulations)) - (filtered-as (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) as))) + (filtered-as (filter ly:music? (map inner-music-filter as))) (filtered-e (if (ly:music? e) - (inner-music-filter pred? e) + (inner-music-filter e) e)) - (filtered-es (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) es)))) + (filtered-es (filter ly:music? (map inner-music-filter es)))) (if (not (null? e)) (set! (ly:music-property music 'element) filtered-e)) (if (not (null? es)) (set! (ly:music-property music 'elements) filtered-es)) (if (not (null? as)) (set! (ly:music-property music 'articulations) filtered-as)) - ;; if filtering emptied the expression, we remove it completely. + ;; if filtering invalidated 'element, we remove the music unless + ;; there are remaining 'elements in which case we just hope and + ;; pray. (if (or (not (pred? music)) - (and (eq? filtered-es '()) (not (ly:music? e)) - (or (not (eq? es '())) - (ly:music? e)))) + (and (null? filtered-es) + (not (ly:music? filtered-e)) + (ly:music? e))) (set! music '())) music)) - (set! music (inner-music-filter pred? music)) + (set! music (inner-music-filter music)) (if (ly:music? music) music (make-music 'Music))) ;must return music. @@ -1699,173 +1701,136 @@ on the same staff line." (cons #f (not (or (equal? acc key-acc) (and (equal? entrybn barnum) (equal? entrymp measurepos))))))))) -(define-public (set-accidentals-properties extra-natural - auto-accs auto-cauts - context) - (context-spec-music - (make-sequential-music - (append (if (boolean? extra-natural) - (list (make-property-set 'extraNatural extra-natural)) - '()) - (list (make-property-set 'autoAccidentals auto-accs) - (make-property-set 'autoCautionaries auto-cauts)))) - context)) - -(define-public (set-accidental-style style . rest) - "Set accidental style to @var{style}. Optionally take a context -argument, e.g. @code{'Staff} or @code{'Voice}. The context defaults -to @code{Staff}, except for piano styles, which use @code{GrandStaff} -as a context." - (let ((context (if (pair? rest) - (car rest) 'Staff)) - (pcontext (if (pair? rest) - (car rest) 'GrandStaff))) - (cond +(define-session-public accidental-styles + ;; An alist containing specification for all accidental styles. + ;; Each accidental style needs three entries for the context properties + ;; extraNatural, autoAccidentals and autoCautionaries. + ;; An optional fourth entry may specify a default context for the accidental + ;; style, for use with the piano styles. + `( ;; accidentals as they were common in the 18th century. - ((equal? style 'default) - (set-accidentals-properties #t - `(Staff ,(make-accidental-rule 'same-octave 0)) - '() - context)) + (default #t + (Staff ,(make-accidental-rule 'same-octave 0)) + ()) ;; accidentals from one voice do NOT get canceled in other voices - ((equal? style 'voice) - (set-accidentals-properties #t - `(Voice ,(make-accidental-rule 'same-octave 0)) - '() - context)) - ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century. - ;; This includes all the default accidentals, but accidentals also needs canceling - ;; in other octaves and in the next measure. - ((equal? style 'modern) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - '() - context)) + (voice #t + (Voice ,(make-accidental-rule 'same-octave 0)) + ()) + ;; accidentals as suggested by Kurt Stone in + ;; ‘Music Notation in the 20th century’. + ;; This includes all the default accidentals, but accidentals also need + ;; canceling in other octaves and in the next measure. + (modern #f + (Staff ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1)) + ()) ;; the accidentals that Stone adds to the old standard as cautionaries - ((equal? style 'modern-cautionary) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0)) - `(Staff ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - context)) - ;; same as modern, but accidentals different from the key signature are always - ;; typeset - unless they directly follow a note of the same pitch. - ((equal? style 'neo-modern) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule) - '() - context)) - ((equal? style 'neo-modern-cautionary) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0)) - `(Staff ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule) - context)) - ((equal? style 'neo-modern-voice) - (set-accidentals-properties #f - `(Voice ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule - Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule) - '() - context)) - ((equal? style 'neo-modern-voice-cautionary) - (set-accidentals-properties #f - `(Voice ,(make-accidental-rule 'same-octave 0)) - `(Voice ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule - Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - ,neo-modern-accidental-rule) - context)) + (modern-cautionary #f + (Staff ,(make-accidental-rule 'same-octave 0)) + (Staff ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1))) + ;; same as modern, but accidentals different from the key signature are + ;; always typeset - unless they directly follow a note of the same pitch. + (neo-modern #f + (Staff ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule) + ()) + (neo-modern-cautionary #f + (Staff ,(make-accidental-rule 'same-octave 0)) + (Staff ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule)) + (neo-modern-voice #f + (Voice ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule + Staff + ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule) + ()) + (neo-modern-voice-cautionary #f + (Voice ,(make-accidental-rule 'same-octave 0)) + (Voice ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule + Staff + ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + ,neo-modern-accidental-rule)) + ;; Accidentals as they were common in dodecaphonic music with no tonality. ;; Each note gets one accidental. - ((equal? style 'dodecaphonic) - (set-accidentals-properties #f - `(Staff ,(lambda (c p bn mp) '(#f . #t))) - '() - context)) + (dodecaphonic #f + (Staff ,(lambda (c p bn mp) '(#f . #t))) + ()) ;; As in dodecaphonic style with the exception that immediately ;; repeated notes (in the same voice) don't get an accidental - ((equal? style 'dodecaphonic-no-repeat) - (set-accidentals-properties #f - `(Staff ,dodecaphonic-no-repeat-rule) - '() - context)) + (dodecaphonic-no-repeat #f + (Staff ,dodecaphonic-no-repeat-rule) + ()) ;; Variety of the dodecaphonic style. Each note gets an accidental, ;; except notes that were already handled in the same measure. - ((equal? style 'dodecaphonic-first) - (set-accidentals-properties #f - `(Staff ,(make-accidental-dodecaphonic-rule 'same-octave 0)) - '() - context)) + (dodecaphonic-first #f + (Staff ,(make-accidental-dodecaphonic-rule 'same-octave 0)) + ()) ;; Multivoice accidentals to be read both by musicians playing one voice - ;; and musicians playing all voices. - ;; Accidentals are typeset for each voice, but they ARE canceled across voices. - ((equal? style 'modern-voice) - (set-accidentals-properties #f - `(Voice ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - '() - context)) - ;; same as modernVoiceAccidental eccept that all special accidentals are typeset - ;; as cautionaries - ((equal? style 'modern-voice-cautionary) - (set-accidentals-properties #f - `(Voice ,(make-accidental-rule 'same-octave 0)) - `(Voice ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - context)) - ;; stone's suggestions for accidentals on grand staff. - ;; Accidentals are canceled across the staves in the same grand staff as well - ((equal? style 'piano) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0) - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - GrandStaff - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - '() - pcontext)) - ((equal? style 'piano-cautionary) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0)) - `(Staff ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1) - GrandStaff - ,(make-accidental-rule 'any-octave 0) - ,(make-accidental-rule 'same-octave 1)) - pcontext)) - - ;; same as modern, but cautionary accidentals are printed for all sharp or flat - ;; tones specified by the key signature. - ((equal? style 'teaching) - (set-accidentals-properties #f - `(Staff ,(make-accidental-rule 'same-octave 0)) - `(Staff ,(make-accidental-rule 'same-octave 1) - ,teaching-accidental-rule) - context)) + ;; and musicians playing all voices. Accidentals are typeset for each + ;; voice, but they ARE canceled across voices. + (modern-voice #f + (Voice ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + Staff + ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1)) + ()) + ;; same as modernVoiceAccidental except that all special accidentals + ;; are typeset as cautionaries + (modern-voice-cautionary #f + (Voice ,(make-accidental-rule 'same-octave 0)) + (Voice ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + Staff + ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1))) + + ;; Stone's suggestions for accidentals on grand staff. + ;; Accidentals are canceled across the staves + ;; in the same grand staff as well + (piano #f + (Staff ,(make-accidental-rule 'same-octave 0) + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + GrandStaff + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1)) + () + GrandStaff) + (piano-cautionary #f + (Staff ,(make-accidental-rule 'same-octave 0)) + (Staff ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1) + GrandStaff + ,(make-accidental-rule 'any-octave 0) + ,(make-accidental-rule 'same-octave 1)) + GrandStaff) + + ;; same as modern, but cautionary accidentals are printed for all + ;; non-natural tones specified by the key signature. + (teaching #f + (Staff ,(make-accidental-rule 'same-octave 0)) + (Staff ,(make-accidental-rule 'same-octave 1) + ,teaching-accidental-rule)) ;; do not set localAlterations when a note alterated differently from ;; localAlterations is found. @@ -1873,22 +1838,41 @@ as a context." ;; remembered for the duration of a measure. ;; accidentals not being remembered, causing accidentals always to ;; be typeset relative to the time signature - ((equal? style 'forget) - (set-accidentals-properties '() - `(Staff ,(make-accidental-rule 'same-octave -1)) - '() - context)) + (forget () + (Staff ,(make-accidental-rule 'same-octave -1)) + ()) ;; Do not reset the key at the start of a measure. Accidentals will be ;; printed only once and are in effect until overridden, possibly many ;; measures later. - ((equal? style 'no-reset) - (set-accidentals-properties '() - `(Staff ,(make-accidental-rule 'same-octave #t)) - '() - context)) - (else - (ly:warning (_ "unknown accidental style: ~S") style) - (make-sequential-music '()))))) + (no-reset () + (Staff ,(make-accidental-rule 'same-octave #t)) + ()) + )) + +(define-public (set-accidental-style style . rest) + "Set accidental style to @var{style}. Optionally take a context +argument, e.g. @code{'Staff} or @code{'Voice}. The context defaults +to @code{Staff}, except for piano styles, which use @code{GrandStaff} +as a context." + (let ((spec (assoc-get style accidental-styles))) + (if spec + (let ((extra-natural (first spec)) + (auto-accs (second spec)) + (auto-cauts (third spec)) + (context (cond ((pair? rest) (car rest)) + ((= 4 (length spec)) (fourth spec)) + (else 'Staff)))) + (context-spec-music + (make-sequential-music + (append (if (boolean? extra-natural) + (list (make-property-set 'extraNatural extra-natural)) + '()) + (list (make-property-set 'autoAccidentals auto-accs) + (make-property-set 'autoCautionaries auto-cauts)))) + context)) + (begin + (ly:warning (_ "unknown accidental style: ~S") style) + (make-sequential-music '()))))) (define-public (invalidate-alterations context) "Invalidate alterations in @var{context}. @@ -2073,6 +2057,21 @@ are expanded using the default settings of the parser." (map (lambda (x) (ly:music-property x 'pitch)) (event-chord-notes event-chord))) +(define-public (music-pitches music) + "Return a list of all pitches from @var{music}." + ;; Opencoded for efficiency. + (reverse! + (let loop ((music music) (pitches '())) + (let ((p (ly:music-property music 'pitch))) + (if (ly:pitch? p) + (cons p pitches) + (let ((elt (ly:music-property music 'element))) + (fold loop + (if (ly:music? elt) + (loop elt pitches) + pitches) + (ly:music-property music 'elements)))))))) + (define-public (event-chord-reduce music) "Reduces event chords in @var{music} to their first note event, retaining only the chord articulations. Returns the modified music."