1 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3 (define-public (music-map function music)
4 "Apply @var{function} to @var{music} and all of the music it contains. "
5 (let* ((es (ly:get-mus-property music 'elements))
6 (e (ly:get-mus-property music 'element))
9 (ly:set-mus-property! music 'elements
10 (map (lambda (y) (music-map function y)) es))
12 (ly:set-mus-property! music 'element (music-map function e)))
16 (define-public (music-filter pred? music)
17 "Filter out music expressions that do not satisfy PRED."
19 (define (inner-music-filter pred? music)
21 (let* ((es (ly:get-mus-property music 'elements))
22 (e (ly:get-mus-property music 'element))
23 (as (ly:get-mus-property music 'articulations))
24 (filtered-as (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) as)))
25 (filtered-e (if (ly:music? e)
26 (inner-music-filter pred? e)
28 (filtered-es (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) es)))
31 (ly:set-mus-property! music 'element filtered-e)
32 (ly:set-mus-property! music 'elements filtered-es)
33 (ly:set-mus-property! music 'articulations filtered-as)
35 ;; if filtering emptied the expression, we remove it completely.
37 (and (eq? filtered-es '()) (not (ly:music? e))
38 (or (not (eq? es '()))
44 (set! music (inner-music-filter pred? music))
47 (make-music-by-name 'Music) ;must return music.
50 (define-public (remove-tag tag)
54 (let* ((tags (ly:get-mus-property m 'tags))
55 (res (memq tag tags)))
58 (define-public (display-music music)
59 "Display music, not done with music-map for clarity of presentation."
63 (let* ((es (ly:get-mus-property music 'elements))
64 (e (ly:get-mus-property music 'element))
67 (display (ly:get-mutable-properties music))
70 (begin (display "\nElements: {\n")
71 (map display-music es)
90 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
92 (define (shift-one-duration-log music shift dot)
93 " add SHIFT to ly:duration-log and optionally
94 a dot to any note encountered. This scales the music up by a factor
95 2^shift * (2 - (1/2)^dot)"
99 (d (ly:get-mus-property music 'duration))
103 (cp (ly:duration-factor d))
104 (nd (ly:make-duration (+ shift (ly:duration-log d))
105 (+ dot (ly:duration-dot-count d))
110 (ly:set-mus-property! music 'duration nd)
116 (define-public (shift-duration-log music shift dot)
117 (music-map (lambda (x) (shift-one-duration-log x shift dot))
121 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
124 (define-public (note-to-cluster music)
125 "Replace NoteEvents by ClusterNoteEvents."
126 (if (eq? (ly:get-mus-property music 'name) 'NoteEvent)
127 (let* ((cn (make-music-by-name 'ClusterNoteEvent)))
129 (ly:set-mus-property! cn 'pitch (ly:get-mus-property music 'pitch))
130 (ly:set-mus-property! cn 'duration (ly:get-mus-property music 'duration))
134 (define-public (notes-to-clusters music)
135 (music-map note-to-cluster music))
137 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
140 (define-public (unfold-repeats music)
142 This function replaces all repeats with unfold repeats. It was
143 written by Rune Zedeler. "
144 (let* ((es (ly:get-mus-property music 'elements))
145 (e (ly:get-mus-property music 'element))
146 (n (ly:music-name music)))
148 (if (equal? n "Repeated_music")
151 (ly:get-mus-property music 'iterator-ctor)
152 Chord_tremolo_iterator::constructor)
153 (shift-duration-log music (ly:intlog2 (ly:get-mus-property music 'repeat-count)) 0)
155 (ly:set-mus-property!
156 music 'length Repeated_music::unfolded_music_length)
157 (ly:set-mus-property!
158 music 'start-moment-function Repeated_music::first_start)
159 (ly:set-mus-property!
160 music 'iterator-ctor Unfolded_repeat_iterator::constructor)))
163 (ly:set-mus-property!
165 (map unfold-repeats es)))
168 (ly:set-mus-property!
175 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
176 ;; property setting music objs.
178 (define-public (make-grob-property-set grob gprop val)
180 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
181 i.e. this is not an override"
183 (let* ((m (make-music-by-name 'OverrideProperty)))
184 (ly:set-mus-property! m 'symbol grob)
185 (ly:set-mus-property! m 'grob-property gprop)
186 (ly:set-mus-property! m 'grob-value val)
187 (ly:set-mus-property! m 'pop-first #t)
192 (define-public (make-grob-property-override grob gprop val)
194 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
195 i.e. this is not an override"
197 (let* ((m (make-music-by-name 'OverrideProperty)))
198 (ly:set-mus-property! m 'symbol grob)
199 (ly:set-mus-property! m 'grob-property gprop)
200 (ly:set-mus-property! m 'grob-value val)
207 (define-public (make-grob-property-revert grob gprop)
208 "Revert the grob property GPROP for GROB."
209 (let* ((m (make-music-by-name 'OverrideProperty)))
210 (ly:set-mus-property! m 'symbol grob)
211 (ly:set-mus-property! m 'grob-property gprop)
217 (define direction-polyphonic-grobs
218 '(Tie Slur Script TextScript Stem Dots DotColumn))
220 (define-public (make-voice-props-set n)
221 (make-sequential-music
223 (map (lambda (x) (make-grob-property-set x 'direction
225 direction-polyphonic-grobs)
227 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
228 (make-grob-property-set 'MultiMeasureRest 'staff-position
236 (define-public (make-voice-props-revert)
237 (make-sequential-music
239 (map (lambda (x) (make-grob-property-revert x 'direction))
240 direction-polyphonic-grobs)
242 (list (make-grob-property-revert 'NoteColumn 'horizontal-shift))
247 (define-public (context-spec-music m context . rest)
248 "Add \\context CONTEXT = foo to M. "
250 (let* ((cm (make-music-by-name 'ContextSpeccedMusic)))
251 (ly:set-mus-property! cm 'element m)
252 (ly:set-mus-property! cm 'context-type context)
253 (if (and (pair? rest) (string? (car rest)))
254 (ly:set-mus-property! cm 'context-id (car rest))
259 (define-public (make-apply-context func)
261 ((m (make-music-by-name 'ApplyContext)))
263 (ly:set-mus-property! m 'procedure func)
267 (define-public (make-sequential-music elts)
268 (let* ((m (make-music-by-name 'SequentialMusic)))
269 (ly:set-mus-property! m 'elements elts)
273 (define-public (make-simultaneous-music elts)
274 (let* ((m (make-music-by-name 'SimultaneousMusic)))
275 (ly:set-mus-property! m 'elements elts)
279 (define-public (make-event-chord elts)
280 (let* ((m (make-music-by-name 'EventChord)))
281 (ly:set-mus-property! m 'elements elts)
286 (define-public (make-nonevent-skip dur)
287 (let* ((m (make-music-by-name 'NonEventSkip)))
288 (ly:set-mus-property! m 'duration dur)
295 (define-public (make-multi-measure-rest duration location)
298 (start (make-music-by-name 'MultiMeasureRestEvent))
299 (stop (make-music-by-name 'MultiMeasureRestEvent))
300 (skip ( make-music-by-name 'SkipEvent))
301 (ch (make-music-by-name 'BarCheck))
302 (ch2 (make-music-by-name 'BarCheck))
303 (seq (make-music-by-name 'MultiMeasureRestMusicGroup))
306 (map (lambda (x) (ly:set-mus-property! x 'origin location))
307 (list start stop skip ch ch2 seq))
308 (ly:set-mus-property! start 'span-direction START)
309 (ly:set-mus-property! stop 'span-direction STOP)
310 (ly:set-mus-property! skip 'duration duration)
311 (ly:set-mus-property! seq 'elements
314 (make-event-chord (list start))
315 (make-event-chord (list skip))
316 (make-event-chord (list stop))
323 (define-public (glue-mm-rest-texts music)
324 "Check if we have R1*4-\\markup { .. }, and if applicable convert to
325 a property set for MultiMeasureRestNumber."
327 (define (script-to-mmrest-text script-music)
328 "Extract 'direction and 'text from SCRIPT-MUSIC, and transform into property sets."
332 (text (ly:get-mus-property script-music 'text))
333 (dir (ly:get-mus-property script-music 'direction))
334 (p (make-music-by-name 'MultiMeasureTextEvent))
338 (ly:set-mus-property! p 'direction dir))
339 (ly:set-mus-property! p 'text text)
343 (if (eq? (ly:get-mus-property music 'name) 'MultiMeasureRestMusicGroup)
346 (text? (lambda (x) (memq 'script-event (ly:get-mus-property x 'types))))
347 (es (ly:get-mus-property music 'elements))
348 (texts (map script-to-mmrest-text (filter text? es)))
349 (others (remove text? es))
352 (ly:set-mus-property!
354 (cons (make-event-chord texts) others)
361 (define-public (make-property-set sym val)
364 (m (make-music-by-name 'PropertySet))
366 (ly:set-mus-property! m 'symbol sym)
367 (ly:set-mus-property! m 'value val)
373 (define-public (make-ottava-set octavation)
375 ((m (make-music-by-name 'ApplyContext)))
378 (define (ottava-modify context)
379 "Either reset centralCPosition to the stored original, or remember
380 old centralCPosition, add OCTAVATION to centralCPosition, and set
381 OTTAVATION to `8va', or whatever appropriate."
383 (if (number? (ly:get-context-property context 'centralCPosition))
387 ((where (ly:context-property-where-defined context 'centralCPosition))
388 (oc0 (ly:get-context-property context 'originalCentralCPosition)))
390 (ly:set-context-property! context 'centralCPosition oc0)
391 (ly:unset-context-property where 'originalCentralCPosition)
392 (ly:unset-context-property where 'ottavation))
395 ((where (ly:context-property-where-defined context 'centralCPosition))
396 (c0 (ly:get-context-property context 'centralCPosition))
397 (new-c0 (+ c0 (* -7 octavation)))
399 (assoc octavation '((2 . "15ma")
403 (-2 . "15ma bassa"))))))
405 (ly:set-context-property! context 'centralCPosition new-c0)
406 (ly:set-context-property! context 'originalCentralCPosition c0)
407 (ly:set-context-property! context 'ottavation string)
411 (ly:set-mus-property! m 'procedure ottava-modify)
412 (context-spec-music m 'Staff)
415 (define-public (set-octavation ottavation)
416 (ly:export (make-ottava-set ottavation)))
418 (define-public (make-time-signature-set num den . rest)
419 " Set properties for time signature NUM/DEN.
420 Rest can contain a list of beat groupings
426 (set1 (make-property-set 'timeSignatureFraction (cons num den) ))
427 (beat (ly:make-moment 1 den))
428 (len (ly:make-moment num den))
429 (set2 (make-property-set 'beatLength beat))
430 (set3 (make-property-set 'measureLength len))
431 (set4 (make-property-set 'beatGrouping (if (pair? rest)
434 (basic (list set1 set2 set3 set4)))
437 (make-sequential-music basic) 'Timing)))
439 (define-public (make-mark-set label)
440 "make the music for the \\mark command."
443 ((set (if (integer? label)
444 (context-spec-music (make-property-set 'rehearsalMark label)
447 (ev (make-music-by-name 'MarkEvent))
448 (ch (make-event-chord (list ev)))
453 (make-sequential-music (list set ch))
455 (ly:set-mus-property! ev 'label label)
460 (define-public (set-time-signature num den . rest)
461 (ly:export (apply make-time-signature-set `(,num ,den . ,rest))))
463 (define-public (make-penalty-music pen)
465 ((m (make-music-by-name 'BreakEvent)))
466 (ly:set-mus-property! m 'penalty pen)
469 (define-public (make-articulation name)
471 (m (make-music-by-name 'ArticulationEvent))
473 (ly:set-mus-property! m 'articulation-type name)
477 (define-public (make-lyric-event string duration)
478 (let* ((m (make-music-by-name 'LyricEvent)))
480 (ly:set-mus-property! m 'duration duration)
481 (ly:set-mus-property! m 'text string)
484 (define-public (make-span-event type spandir)
486 (m (make-music-by-name type))
488 (ly:set-mus-property! m 'span-direction spandir)
492 (define-public (set-mus-properties! m alist)
493 "Set all of ALIST as properties of M."
496 (ly:set-mus-property! m (caar alist) (cdar alist))
497 (set-mus-properties! m (cdr alist)))
502 (define-public (music-separator? m)
504 (let* ((ts (ly:get-mus-property m 'types )))
509 ;;; splitting chords into voices.
511 (define (voicify-list lst number)
512 "Make a list of Musics.
514 voicify-list :: [ [Music ] ] -> number -> [Music]
515 LST is a list music-lists.
519 (cons (context-spec-music
520 (make-sequential-music
522 (make-voice-props-set number)
523 (make-simultaneous-music (car lst))))
525 'Voice (number->string number))
526 (voicify-list (cdr lst) (+ number 1))
530 (define (voicify-chord ch)
531 "Split the parts of a chord into different Voices using separator"
532 (let* ((es (ly:get-mus-property ch 'elements)))
534 (ly:set-mus-property! ch 'elements
535 (voicify-list (split-list es music-separator?) 0))
539 (define (voicify-music m)
540 "Recursively split chords that are separated with \\ "
542 (if (not (ly:music? m))
544 (error "not music!"))
547 ((es (ly:get-mus-property m 'elements))
548 (e (ly:get-mus-property m 'element))
551 (ly:set-mus-property! m 'elements (map voicify-music es)))
553 (ly:set-mus-property! m 'element (voicify-music e)))
555 (and (equal? (ly:music-name m) "Simultaneous_music")
556 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
563 (define-public (empty-music)
564 (ly:export (make-music-by-name 'Music))
568 ; Make a function that checks score element for being of a specific type.
569 (define-public (make-type-checker symbol)
572 ;;(eq? #t (ly:get-grob-property elt symbol))
573 (not (eq? #f (memq symbol (ly:get-grob-property elt 'interfaces))))))
575 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
577 (ly:set-grob-property! grob sym val)))
580 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
583 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
588 ((meta (ly:get-grob-property grob 'meta)))
590 (if (equal? (cdr (assoc 'name meta)) grob-name)
591 (ly:set-grob-property! grob symbol val)
596 (define-public (smart-bar-check n)
597 "Make a bar check that checks for a specific bar number.
601 (m (make-music-by-name 'ApplyContext))
605 (let* ((bn (ly:get-context-property tr 'currentBarNumber)))
609 (format "Bar check failed, we should have reached ~a, instead at ~a\n"
613 (ly:set-mus-property! m 'procedure checker)
617 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
618 ;; warn for bare chords at start.
620 (define (has-request-chord elts)
621 (reduce (lambda (x y) (or x y)) #f (map (lambda (x) (equal? (ly:music-name x)
622 "Request_chord")) elts)
625 (define (ly:music-message music msg)
628 (ip (ly:get-mus-property music 'origin))
631 (if (ly:input-location? ip)
632 (ly:input-message ip msg)
636 (define (check-start-chords music)
637 "Check music expression for a Simultaneous_music containing notes\n(ie. Request_chords), without context specification. Called from parser."
640 ((es (ly:get-mus-property music 'elements))
641 (e (ly:get-mus-property music 'element))
642 (name (ly:music-name music))
646 ((equal? name "Context_specced_music") #t)
647 ((equal? name "Simultaneous_music")
649 (if (has-request-chord es)
650 (ly:music-message music "Starting score with a chord.\nPlease insert an explicit \\context before chord")
651 (map check-start-chords es)))
653 ((equal? name "Sequential_music")
655 (check-start-chords (car es))))
656 (else (if (ly:music? e) (check-start-chords e )))
664 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
666 ;; setting stuff for grace context.
669 (define (vector-extend v x)
670 "Make a new vector consisting of V, with X added to the end."
672 ((n (vector-length v))
673 (nv (make-vector (+ n 1) '())))
676 (vector-move-left! v 0 n nv 0)
681 (define (vector-map f v)
682 "Map F over V. This function returns nothing."
684 ((n (vector-length v))
688 (f (vector-ref v i))))
690 (define (vector-reverse-map f v)
691 "Map F over V, N to 0 order. This function returns nothing."
693 ((i (- (vector-length v) 1) (- i 1)))
696 (f (vector-ref v i))))
698 ;; TODO: make a remove-grace-property too.
699 (define-public (add-grace-property context-name grob sym val)
700 "Set SYM=VAL for GROB in CONTEXT-NAME. "
701 (define (set-prop context)
703 ((where (ly:context-property-where-defined context 'graceSettings))
704 (current (ly:get-context-property where 'graceSettings))
705 (new-settings (vector-extend current (list context-name grob sym val)))
707 (ly:set-context-property! where 'graceSettings new-settings)))
709 (ly:export (context-spec-music (make-apply-context set-prop) 'Voice)))
712 (define-public (set-start-grace-properties context)
713 (define (execute-1 x)
715 ((tr (ly:translator-find context (car x))))
718 (ly:context-pushpop-property tr (cadr x) (caddr x) (cadddr x))
722 ((props (ly:get-context-property context 'graceSettings)))
724 (vector-map execute-1 props))))
726 (define-public (set-stop-grace-properties context)
727 (define (execute-1 x)
729 ((tr (ly:translator-find context (car x))))
731 (ly:context-pushpop-property tr (cadr x) (caddr x))
735 ((props (ly:get-context-property context 'graceSettings)))
737 (vector-reverse-map execute-1 props))))
739 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
740 ;; switch it on here, so parsing and init isn't checked (too slow!)
742 ;; automatic music transformations.
744 (define (switch-on-debugging m)
745 (set-debug-cell-accesses! 15000)
748 (define-public toplevel-music-functions
750 ;; check-start-chords ; ; no longer needed with chord syntax.
752 (lambda (x) (music-map glue-mm-rest-texts x))
753 ; switch-on-debugging
762 (define (apply-durations lyric-music durations)
763 (define (apply-duration music)
764 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
765 (ly:duration? (ly:get-mus-property music 'duration)))
767 (ly:set-mus-property! music 'duration (car durations))
768 (set! durations (cdr durations))
771 (music-map apply-duration lyric-music))
774 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
778 (define-public ((add-balloon-text object-name text off) grob orig-context cur-context)
779 "Usage: see input/regression/balloon.ly "
781 ((meta (ly:get-grob-property grob 'meta))
782 (nm (if (pair? meta) (cdr (assoc 'name meta)) "nonexistant"))
783 (cb (ly:get-grob-property grob 'molecule-callback)))
785 (if (equal? nm object-name)
787 (ly:set-grob-property! grob 'molecule-callback Balloon_interface::brew_molecule)
788 (ly:set-grob-property! grob 'balloon-original-callback cb)
789 (ly:set-grob-property! grob 'balloon-text text)
790 (ly:set-grob-property! grob 'balloon-text-offset off)
791 (ly:set-grob-property! grob 'balloon-text-props '((font-family . roman)))
796 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
802 (define part-combine-listener '())
803 (define-public (set-part-combine-listener x)
804 (set! part-combine-listener x))
806 (define-public (notice-the-events-for-pc context lst)
807 (set! noticed (acons (ly:context-id context) lst noticed)))
809 (define-public (make-new-part-combine-music music-list)
811 ((m (make-music-by-name 'NewPartCombineMusic))
812 (m1 (context-spec-music (car music-list) 'Voice "one"))
813 (m2 (context-spec-music (cadr music-list) 'Voice "two"))
814 (props '((denies Thread)
815 (consists Rest_engraver)
816 (consists Note_heads_engraver)
819 (ly:set-mus-property! m 'elements (list m1 m2))
820 (ly:set-mus-property! m1 'property-operations props)
821 (ly:set-mus-property! m2 'property-operations props)
822 (ly:run-translator m2 part-combine-listener)
823 (ly:run-translator m1 part-combine-listener)
824 (ly:set-mus-property! m 'split-list
825 (determine-split-list (reverse (cdr (assoc "one" noticed)))
826 (reverse (cdr (assoc "two" noticed)))))
834 ;; due to a bug in the GUILE evaluator,
835 ;; stack traces result in core dumps.
836 ;; therefore we retain debugging code.
838 (define-public (determine-split-list evl1 evl2)
839 "EVL1 and EVL2 should be ascending"
841 (define ev1 (list->vector evl1))
842 (define ev2 (list->vector evl2))
844 (car (vector-ref v i)))
846 (cdr (vector-ref v i)))
848 (define chord-threshold 8)
855 (merge (map car evl1) (map car evl2) ly:moment<?)))))
857 (define (analyse-events i1 i2 ri
861 (define (analyse-span-events active evs)
862 (define (analyse-span-event active ev)
864 ((name (ly:get-mus-property ev 'name))
866 ((equal? name 'SlurEvent) 'slur)
867 ((equal? name 'PhrasingSlurEvent) 'tie)
868 ((equal? name 'Beam) 'beam)
870 (sp (ly:get-mus-property ev 'span-direction)))
872 (if (and (symbol? key) (ly:dir? sp))
873 ((if (= sp STOP) delete! cons) key active)
879 (analyse-span-event active (car evs))
884 (define (get-note-evs v i)
886 (equal? (ly:get-mus-property x 'name) 'NoteEvent))
887 (filter f? (map car (what v i))))
889 (define (put x . index)
890 (set-cdr! (vector-ref result (if (pair? index)
891 (car index) ri)) x) )
893 ; (display (list i1 i2 ri active1 active2 (vector-length ev1) (vector-length ev2) (vector-length result) "\n"))
895 ((= ri (vector-length result)) '())
896 ((= i1 (vector-length ev1)) (put 'apart))
897 ((= i2 (vector-length ev2)) (put 'apart))
901 ; (x (display (list "\nelse" (= i1 (vector-length ev1)) i2 (vector-length ev2) (= i2 (vector-length ev2)))))
904 ; (x (display "oked"))
907 (analyse-span-events active1 (map car (what ev1 i1)))
910 (sort (analyse-span-events active2 (map car (what ev2 i2)))
913 (if (not (or (equal? m1 (when result ri))
914 (equal? m2 (when result ri))))
917 (list "<? M1,M2 != result :"
918 m1 m2 (when result ri)))
924 (if (> ri 0) (put 'apart (1- ri)))
925 (analyse-events (1+ i1) i2 (1+ ri) new-active1 new-active2))
928 (if (> ri 0) (put 'apart (1- ri)))
929 (analyse-events i1 (1+ i2) (1+ ri) new-active1 new-active2))
931 (if (or (not (equal? active1 active2)) (not (equal? new-active2 new-active1)))
935 ((notes1 (get-note-evs ev1 i1))
937 (map (lambda (x) (ly:get-mus-property x 'pitch)) notes1) ly:pitch<?))
938 (notes2 (get-note-evs ev2 i2))
940 (map (lambda (x) (ly:get-mus-property x 'pitch)) notes2) ly:pitch<?))
943 ((equal? pitches1 pitches2) (put 'unisono))
944 ((= (length notes1) 0) (put 'solo2))
945 ((= (length notes2) 0) (put 'solo1))
946 ((> (length notes1) 1) (put 'apart))
947 ((> (length notes2) 1) (put 'apart))
950 ; (bla (display (list (length pitches1) (length pitches2))))
951 (diff (ly:pitch-diff (car pitches1) (car pitches2))))
952 (if (< (ly:pitch-steps diff) chord-threshold)
957 (analyse-events (1+ i1) (1+ i2) (1+ ri) new-active1 new-active2))
961 (analyse-events 0 0 0 '() '())
962 (vector->list result))
966 ; (determine-split-list '((1 . 2) (3 . 4)) '((1 . 2) (3 . 4)))