(ly:in-event-class? x 'note-event))
(filter f? (events vs)))
+; Return a list of note events which is sorted and stripped of
+; properties that we do not want to prevent combining parts.
+(define-method (comparable-note-events (vs <Voice-state>))
+ (define (note<? note1 note2)
+ (let ((p1 (ly:event-property note1 'pitch))
+ (p2 (ly:event-property note2 'pitch)))
+ (cond ((ly:pitch<? p1 p2) #t)
+ ((ly:pitch<? p2 p1) #f)
+ (else (ly:duration<? (ly:event-property note1 'duration)
+ (ly:event-property note2 'duration))))))
+ ;; TODO we probably should compare articulations too
+ (sort (map (lambda (x)
+ (ly:make-stream-event
+ (ly:make-event-class 'note-event)
+ (list (cons 'duration (ly:event-property x 'duration))
+ (cons 'pitch (ly:event-property x 'pitch)))))
+ (note-events vs))
+ note<?))
+
(define-method (rest-and-skip-events (vs <Voice-state>))
(define (f? x)
(or (ly:in-event-class? x 'rest-event)
(define (analyse-notes now-state)
(let* ((vs1 (car (voice-states now-state)))
(vs2 (cdr (voice-states now-state)))
- (notes1 (note-events vs1))
- (durs1 (sort (map (lambda (x) (ly:event-property x 'duration))
- notes1)
- ly:duration<?))
- (pitches1 (sort (map (lambda (x) (ly:event-property x 'pitch))
- notes1)
- ly:pitch<?))
- (notes2 (note-events vs2))
- (durs2 (sort (map (lambda (x) (ly:event-property x 'duration))
- notes2)
- ly:duration<?))
- (pitches2 (sort (map (lambda (x) (ly:event-property x 'pitch))
- notes2)
- ly:pitch<?)))
- (cond ((> (length notes1) 1) (put 'apart))
- ((> (length notes2) 1) (put 'apart))
- ((= 1 (+ (length notes2) (length notes1))) (put 'apart))
- ((and (= (length durs1) 1)
- (= (length durs2) 1)
- (not (equal? (car durs1) (car durs2))))
- (put 'apart))
- (else
- (if (and (= (length pitches1) (length pitches2)))
- (if (and (pair? pitches1)
- (pair? pitches2)
- ; Is the interval outside of chord-range?
- (let ((diff (ly:pitch-steps
- (ly:pitch-diff (car pitches1)
- (car pitches2)))))
- (or (< diff chord-min-diff)
- (> diff chord-max-diff)
- )))
- (put 'apart)
- ;; copy previous split state from spanner state
- (begin
- (if (previous-voice-state vs1)
- (copy-state-from voice-state-vec1
- (previous-voice-state vs1)))
- (if (previous-voice-state vs2)
- (copy-state-from voice-state-vec2
- (previous-voice-state vs2)))
- (if (and (null? (span-state vs1)) (null? (span-state vs2)))
- (put 'chords)))))))))
+ (notes1 (comparable-note-events vs1))
+ (notes2 (comparable-note-events vs2)))
+ (cond
+ ;; if neither part has notes, do nothing
+ ((and (not (pair? notes1)) (not (pair? notes2))))
+
+ ;; if one part has notes and the other does not
+ ((or (not (pair? notes1)) (not (pair? notes2))) (put 'apart))
+
+ ;; if either part has a chord
+ ((or (> (length notes1) 1)
+ (> (length notes2) 1))
+ (if (and (<= chord-min-diff 0) ; user requests combined unisons
+ (equal? notes1 notes2)) ; both parts have the same chord
+ (put 'chords)
+ (put 'apart)))
+
+ ;; if the durations are different
+ ;; TODO articulations too?
+ ((and (not (equal? (ly:event-property (car notes1) 'duration)
+ (ly:event-property (car notes2) 'duration))))
+ (put 'apart))
+
+ (else
+ ;; Is the interval outside of chord-range?
+ (if (let ((diff (ly:pitch-steps
+ (ly:pitch-diff
+ (ly:event-property (car notes1) 'pitch)
+ (ly:event-property (car notes2) 'pitch)))))
+ (or (< diff chord-min-diff)
+ (> diff chord-max-diff)
+ ))
+ (put 'apart)
+ ;; copy previous split state from spanner state
+ (begin
+ (if (previous-voice-state vs1)
+ (copy-state-from voice-state-vec1
+ (previous-voice-state vs1)))
+ (if (previous-voice-state vs2)
+ (copy-state-from voice-state-vec2
+ (previous-voice-state vs2)))
+ (if (and (null? (span-state vs1)) (null? (span-state vs2)))
+ (put 'chords))))))))
(if (< result-idx (vector-length result))
(let* ((now-state (vector-ref result result-idx))
)))
(if (or vs1 vs2)
- (let ((notes1 (if vs1 (note-events vs1) '()))
- (notes2 (if vs2 (note-events vs2) '())))
- ; Todo: What about a2 chords, e.g. string multi-stops?
- ; Sort and compare notes1 and notes2?
+ (let ((notes1 (if vs1 (comparable-note-events vs1) '()))
+ (notes2 (if vs2 (comparable-note-events vs2) '())))
(cond ((and (equal? (configuration now-state) 'chords)
- (= 1 (length notes1))
- (= 1 (length notes2))
- (equal? (ly:event-property (car notes1) 'pitch)
- (ly:event-property (car notes2) 'pitch)))
+ (pair? notes1)
+ (equal? notes1 notes2))
(set! (configuration now-state) 'unisono))
((synced? now-state)
(display result))
result))
+(define-public default-part-combine-mark-state-machine
+ ;; (current-state . ((split-state-event .
+ ;; (output-voice output-event next-state)) ...))
+ '((Initial . ((solo1 . (solo SoloOneEvent Solo1))
+ (solo2 . (solo SoloTwoEvent Solo2))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Solo1 . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo2 . (solo SoloTwoEvent Solo2))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Solo2 . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo1 . (solo SoloOneEvent Solo1))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Unisono . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo1 . (solo SoloOneEvent Solo1))
+ (solo2 . (solo SoloTwoEvent Solo2))))))
+
+(define-public (make-part-combine-marks state-machine split-list)
+ "Generate a sequence of part combiner events from a split list"
+
+ (define (get-state state-name)
+ (assq-ref state-machine state-name))
+
+ (let ((full-seq '()) ; sequence of { \context Voice = "x" {} ... }
+ (segment '()) ; sequence within \context Voice = "x" {...}
+ (prev-moment ZERO-MOMENT)
+ (prev-voice #f)
+ (state (get-state 'Initial)))
+
+ (define (commit-segment)
+ "Add the current segment to the full sequence and begin another."
+ (if (pair? segment)
+ (set! full-seq
+ (cons (make-music 'ContextSpeccedMusic
+ 'context-id (symbol->string prev-voice)
+ 'context-type 'Voice
+ 'element (make-sequential-music (reverse! segment)))
+ full-seq)))
+ (set! segment '()))
+
+ (define (handle-split split)
+ (let* ((moment (car split))
+ (action (assq-ref state (cdr split))))
+ (if action
+ (let ((voice (car action))
+ (part-combine-event (cadr action))
+ (next-state-name (caddr action)))
+ (if part-combine-event
+ (let ((dur (ly:moment-sub moment prev-moment)))
+ ;; start a new segment when the voice changes
+ (if (not (eq? voice prev-voice))
+ (begin
+ (commit-segment)
+ (set! prev-voice voice)))
+ (if (not (equal? dur ZERO-MOMENT))
+ (set! segment (cons (make-music 'SkipEvent
+ 'duration (make-duration-of-length dur)) segment)))
+ (set! segment (cons (make-music part-combine-event) segment))
+
+ (set! prev-moment moment)))
+ (set! state (get-state next-state-name))))))
+
+ (for-each handle-split split-list)
+ (commit-segment)
+ (make-sequential-music (reverse! full-seq))))
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projects / lilypond.git / blobdiff