X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fauto-beam.scm;h=610cb051f413ef7984c6f3e7eefe0283fe5b9483;hb=c750e9b0ef41267a9b6be0300c880047f48b9353;hp=0a6d94b1955bf910bd9831f2edd2ef67be6d9f3f;hpb=1b4f371fe85ccdf1a5e5670cf5626426bd05d82b;p=lilypond.git diff --git a/scm/auto-beam.scm b/scm/auto-beam.scm index 0a6d94b195..610cb051f4 100644 --- a/scm/auto-beam.scm +++ b/scm/auto-beam.scm @@ -1,10 +1,8 @@ -;;; -;;; auto-beam.scm -- Auto-beam-engraver settings -;;; -;;; source file of the GNU LilyPond music typesetter -;;; -;;; (c) 2000--2002 Jan Nieuwenhuizen -;;; +;;;; auto-beam.scm -- Auto-beam-engraver settings +;;;; +;;;; source file of the GNU LilyPond music typesetter +;;;; +;;;; (c) 2000--2006 Jan Nieuwenhuizen ;;; specify generic beam begin and end times @@ -15,70 +13,222 @@ ;;; where ;;; ;;; function = begin or end -;;; shortest-duration-in-beam = numerator denominator; eg: 1 16 -;;; time-signature = numerator denominator, eg: 4 4 +;;; shortest-duration-in-beam = numerator denominator; e.g.: 1 16 +;;; time-signature = numerator denominator, e.g.: 4 4 ;;; ;;; unspecified or wildcard entries for duration or time-signature ;;; are given by * * ;;; maybe do: '(end shortest-1 16 time-3 4) ? -;;; in 3 2 time: -;;; end beams each 1 2 note -;;; end beams with 16th notes each 1 4 note -;;; end beams with 32th notes each 1 8 note - -(define-public auto-beam-settings - `( - ((end * * 3 2) . ,(make-moment 1 2)) - ((end 1 16 3 2) . ,(make-moment 1 4)) - ((end 1 32 3 2) . ,(make-moment 1 8)) - - ((begin 1 8 3 4) . ,(make-moment 1 4)) - - ((end * * 3 4) . ,(make-moment 3 4)) - ((begin 1 16 3 4) . ,(make-moment 1 16)) - ((end 1 16 3 4) . ,(make-moment 1 4)) - ;;((begin 1 32 3 4) . ,(make-moment 1 8)) - ((end 1 32 3 4) . ,(make-moment 1 8)) - - ((begin 1 16 3 8) . ,(make-moment 1 8)) - ((end * * 3 8) . ,(make-moment 3 8)) - - ;; in common time: - ;; end beams each 1 2 note - ;; end beams with 32th notes each 1 8 note - ;; end beams with 1 8 triplets each 1 4 note - - ((end * * 4 4) . ,(make-moment 1 2)) - ((end 1 12 4 4) . ,(make-moment 1 4)) - ((end 1 16 4 4) . ,(make-moment 1 4)) - ((end 1 32 4 4) . ,(make-moment 1 8)) - - ((end * * 2 4) . ,(make-moment 1 4)) - ((end 1 12 2 4) . ,(make-moment 1 4)) - ((end 1 16 2 4) . ,(make-moment 1 4)) - ((end 1 32 2 4) . ,(make-moment 1 8)) - - ;; It seems that, because of a bug in the previous auto-beamer, - ;; we had the effect of this setting x - ;; ((end * * 2 8) . ,(make-moment 2 8)) - - ((end * * 4 8) . ,(make-moment 1 4)) - ((end 1 16 4 8) . ,(make-moment 1 4)) - ((end 1 32 4 8) . ,(make-moment 1 8)) - - ((end * * 4 16) . ,(make-moment 1 8)) - - ((end * * 6 8) . ,(make-moment 3 8)) - ((end 1 16 6 8) . ,(make-moment 3 8)) - ((end 1 32 6 8) . ,(make-moment 1 8)) - - ((end * * 9 8) . ,(make-moment 3 8)) - ((end 1 16 9 8) . ,(make-moment 3 8)) - ((end 1 32 9 8) . ,(make-moment 1 8)) - - ((end * * 12 8) . ,(make-moment 3 8)) - ((end 1 16 12 8) . ,(make-moment 3 8)) - ((end 1 32 12 8) . ,(make-moment 1 8)) - )) +(define-public default-auto-beam-settings + `( + ;; in 3 2 time: + ;; end beams each 1 2 note + ;; end beams with 16th notes each 1 4 note + ;; end beams with 32th notes each 1 8 note + + ((end * * 3 2) . ,(ly:make-moment 1 2)) + ((end * * 3 2) . ,(ly:make-moment 2 2)) + + ((end 1 16 3 2) . ,(ly:make-moment 1 4)) + ((end 1 16 3 2) . ,(ly:make-moment 1 2)) + ((end 1 16 3 2) . ,(ly:make-moment 3 4)) + ((end 1 16 3 2) . ,(ly:make-moment 5 4)) + + ((end 1 32 3 2) . ,(ly:make-moment 1 8)) + ((end 1 32 3 2) . ,(ly:make-moment 1 4)) + ((end 1 32 3 2) . ,(ly:make-moment 3 8)) + ((end 1 32 3 2) . ,(ly:make-moment 1 2)) + ((end 1 32 3 2) . ,(ly:make-moment 5 8)) + ((end 1 32 3 2) . ,(ly:make-moment 3 4)) + ((end 1 32 3 2) . ,(ly:make-moment 9 8)) + ((end 1 32 3 2) . ,(ly:make-moment 5 4)) + ((end 1 32 3 2) . ,(ly:make-moment 11 8)) + + ((end * * 3 4) . ,(ly:make-moment 3 4)) + + ((end 1 16 3 4) . ,(ly:make-moment 1 4)) + ((end 1 16 3 4) . ,(ly:make-moment 1 2)) + + ((end 1 32 3 4) . ,(ly:make-moment 1 8)) + ((end 1 32 3 4) . ,(ly:make-moment 1 4)) + ((end 1 32 3 4) . ,(ly:make-moment 3 8)) + ((end 1 32 3 4) . ,(ly:make-moment 1 2)) + ((end 1 32 3 4) . ,(ly:make-moment 5 8)) + + ((end * * 3 8) . ,(ly:make-moment 3 8)) + + ;; in common time: + ;; end beams each 1 2 note + ;; end beams with 32th notes each 1 8 note + ;; end beams with 1 8 triplets each 1 4 note + + ((end * * 4 4) . ,(ly:make-moment 1 2)) + ((end 1 12 4 4) . ,(ly:make-moment 1 4)) + ((end 1 12 4 4) . ,(ly:make-moment 3 4)) + + ((end 1 16 4 4) . ,(ly:make-moment 1 4)) + ((end 1 16 4 4) . ,(ly:make-moment 3 4)) + + ((end 1 32 4 4) . ,(ly:make-moment 1 8)) + ((end 1 32 4 4) . ,(ly:make-moment 1 4)) + ((end 1 32 4 4) . ,(ly:make-moment 3 8)) + ((end 1 32 4 4) . ,(ly:make-moment 5 8)) + ((end 1 32 4 4) . ,(ly:make-moment 3 4)) + ((end 1 32 4 4) . ,(ly:make-moment 7 8)) + + ((end * * 2 4) . #f) ;; switch-off at-any-beat feature + ((end * * 2 4) . ,(ly:make-moment 1 4)) + ((end 1 32 2 4) . ,(ly:make-moment 1 8)) + ((end 1 32 2 4) . ,(ly:make-moment 3 8)) + + ((end * * 4 8) . #f) ;; switch-off at-any-beat feature + ((end * * 4 8) . ,(ly:make-moment 1 4)) + ((end 1 32 4 8) . ,(ly:make-moment 1 8)) + ((end 1 32 4 8) . ,(ly:make-moment 3 8)) + + ((end * * 4 16) . #f) ;; switch-off at-any-beat feature + ((end * * 4 16) . ,(ly:make-moment 1 8)) + + ((end * * 6 8) . #f) ;; switch-off at-any-beat feature + ((end * * 6 8) . ,(ly:make-moment 3 8)) + ((end 1 32 6 8) . ,(ly:make-moment 1 8)) + ((end 1 32 6 8) . ,(ly:make-moment 1 4)) + ((end 1 32 6 8) . ,(ly:make-moment 1 2)) + ((end 1 32 6 8) . ,(ly:make-moment 5 8)) + + ((end * * 9 8) . #f) ;; switch-off at-any-beat feature + ((end * * 9 8) . ,(ly:make-moment 3 8)) + ((end * * 9 8) . ,(ly:make-moment 3 4)) + ((end 1 32 9 8) . ,(ly:make-moment 1 8)) + ((end 1 32 9 8) . ,(ly:make-moment 1 4)) + ((end 1 32 9 8) . ,(ly:make-moment 1 2)) + ((end 1 32 9 8) . ,(ly:make-moment 5 8)) + ((end 1 32 9 8) . ,(ly:make-moment 7 8)) + ((end 1 32 9 8) . ,(ly:make-moment 1 1)) + ((end 1 32 9 8) . ,(ly:make-moment 9 8)) + + ((end * * 12 8) . #f) ;; switch-off at-every-beat + ((end * * 12 8) . ,(ly:make-moment 3 8)) + ((end * * 12 8) . ,(ly:make-moment 3 4)) + ((end * * 12 8) . ,(ly:make-moment 9 8)) + ((end * * 12 8) . ,(ly:make-moment 2 1)) + ((end 1 32 12 8) . ,(ly:make-moment 1 8)) + )) + +(define (override-property-setting context property setting value) + "Like the C++ code that executes \\override, but without type +checking. " + (ly:context-set-property! + context property + (cons (cons setting value) (ly:context-property context property)))) + +(define (revert-property-setting context property setting) + "Like the C++ code that executes \revert, but without type +checking. " + + (define (revert-member alist entry new) + "Return ALIST, with ENTRY removed. ALIST is not modified, instead +a fresh copy of the list-head is made." + (cond + ((null? alist) new) + ((equal? (car alist) entry) (revert-member (cdr alist) entry new)) + (else (revert-member (cdr alist) entry (cons (car alist) new))))) + + (ly:context-set-property! + context property + (revert-member (ly:context-property context property) setting '()))) + +(define-public (override-auto-beam-setting setting num den . rest) + (ly:export + (context-spec-music + (make-apply-context (lambda (c) + (override-property-setting + c 'autoBeamSettings + setting (ly:make-moment num den)))) + (if (and (pair? rest) (symbol? (car rest))) + (car rest) + 'Voice)))) + +(define-public (score-override-auto-beam-setting setting num den) + (override-auto-beam-setting setting num den 'Score)) + +(define-public (revert-auto-beam-setting setting num den . rest) + (ly:export + (context-spec-music + (make-apply-context (lambda (c) + (revert-property-setting + c 'autoBeamSettings + (cons setting (ly:make-moment num den))))) + (if (and (pair? rest) (symbol? (car rest))) + (car rest) + 'Voice)))) + +;; Determine end moment for auto beaming (or begin moment, but mostly +;; 0== anywhere). In order of decreasing priority: +;; +;; 1. end * * +;; 2. end * * * +;; 3. end +;; 4. end * +;; 5. if 1-4 not specified: begin anywhere, end at every beat +;; +;; Rationale: +;; +;; [user override] +;; 1. override for specific duration type +;; 2. generic override +;; +;; [to be defined in config file] +;; 3. exceptions for specific time signature, for specific duration type +;; 4. exceptions for specific time signature +;; 5. easy catch-all rule for non-specified measure types + +(define-public (default-auto-beam-check context dir test) + (define (get name default) + (let ((value (ly:context-property context name))) + (if (not (null? value)) value default))) + + ;; Don't start auto beams on grace notes + (if (and (!= (ly:moment-grace-numerator (ly:context-now context)) 0) + (= dir START)) + #f + (let* ((beat-length (get 'beatLength (ly:make-moment 1 1))) + (measure-length (get 'measureLength (ly:make-moment 1 1))) + (measure-pos (get 'measurePosition ZERO-MOMENT)) + (settings (get 'autoBeamSettings '())) + (function (list (if (= dir START) 'begin 'end))) + (num-mom (ly:moment-div measure-length beat-length)) + (num (inexact->exact + (round (/ (ly:moment-main-numerator num-mom) + (ly:moment-main-denominator num-mom))))) + (den (ly:moment-main-denominator beat-length)) + (time (list num den)) + (type (list (ly:moment-main-numerator test) + (ly:moment-main-denominator test))) + (pos (if (>= (ly:moment-main-numerator measure-pos) 0) + measure-pos + (ly:moment-add measure-length measure-pos))) + (lst (list + ;; Hmm, should junk user-override feature, + ;; or split this in user-override and config section? + (append function type '(* *)) + (append function '(* * * *)) + (append function type time) + (append function '(* *) time)))) + + (if (or + ;; always begin or end beams at beginning/ending of measure + (= (ly:moment-main-numerator pos) 0) + (first-member (map (lambda (x) (cons x pos)) lst) settings)) + #t + (if (= dir START) + ;; if no entry matches our function + time or type, + ;; start anywhere + (not (first-assoc lst settings)) + ;; if no entry matches our function + time or type, + ;; end at any beat + (and (not (first-assoc lst settings)) + (= (ly:moment-main-denominator + (ly:moment-div pos beat-length)) 1)))))))