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|
;Rebar
;Fixed for tuplets giving inexact numbers of ticks
;Rebar-repartitions the measures, searches for under/overfull, pad with rests, by DW, trivial mods by RTS
;FIXME-currently no support for nested tuplets
;notes: (d-GetType) returns CHORD TIMESIG LILYDIRECTIVE TUPOPEN TUPCLOSE (tuplets) Appending
;Variable descriptions:
;SplitAll set to #f allows user to decide whether to split across barlines; set to a number, splits that many times.
;TupletScaleFactor: e.g. if we're inside a triplet, scale durations by 2/3
;IgnoreDurationError set if a measure is marked as having an allowable duration discrepancy, marking is done with a directive of tag "!"
(define ReBar::return #f)
(define-once CheckScore::error-position #f)
(d-TakeSnapshot)
(d-IncreaseGuard)
(let ((Input1 #f)
(Input2 #f)
(InitialTimeSig 1)
(ScanAllStaffs #f)
(TupletScaleFactor 1)
(SplitAll #f)
(IgnoreDurationError #f))
;MakeBlankRestDuration: makes a tied rest conglomerate of total duration Duration.
;IsConsecutive is set to #t when it recurses in order to make it add a dot instead of adding the next TryDuration. Externally, call it always set to #f
;externally, call with TryDuration=0 to start with trying out whole notes. Internally it will crank this up as it recurses.
(define (MakeRest Duration TryDuration Type) ;set Type to "Blank" to get blanks.
(begin
(if (not (equal? TupletScaleFactor 1))
(begin
(d-InfoDialog (_ "There are unclosed tuplets in this bar.\n Please fix - see CheckTuplets command."))
#f ;terminate
)
)
(if (and (> Duration 0) (equal? (remainder 256 (denominator Duration)) 0) ) ;check for valid Duration
(begin ;when Duration is a valid duration...
(if (<= (expt 1/2 TryDuration) Duration) ;see if we should add note of length TryDuration
(begin
(InsertRest TryDuration Type)
(set! Duration (- Duration (* (expt 1/2 TryDuration) TupletScaleFactor)));now modify true Duration by what we just added.
)
)
(if (<= TryDuration 8)
(MakeRest Duration (+ 1 TryDuration) Type)
)
)
#f
)
);let
)
(define (InsertRest Duration Type) ;inserts a rest of duration TryDuration, and makes it tied. denom of Duration must be power of 2.
(if (equal? Type "Blank") (d-InsertBlankWholeNote) (d-InsertWholeRest) ) ;Insert correct type
(if (equal? (d-GetType) "Appending") (d-MoveCursorLeft)) ;now we're on it. (Don't need to go left if we're not appending)
(while (> Duration 0) ;we keep diminishing until we got it.
(begin
(d-Diminish)
(set! Duration (- Duration 1))
)
)
;(d-MoveCursorRight)
)
;SplitIntoNext:splits a measure by inserting a barline, ending in next bar
(define (SplitIntoNext) ;custom version of SplitIntoNext used here
(if (ProbePreviousObject (lambda () (TupletOpen?)))
(d-MoveCursorLeft))
(d-SetMark)
(if (d-MeasureRight)
(begin (d-CursorLeft)
(d-Cut)
(d-CursorRight)
(d-InsertMeasureBefore)
)
(begin
(d-GoToEnd)
(d-Cut)
(d-AppendMeasure)
(d-MoveToMeasureRight)
)
)
(d-Paste) ;now, position the cursor at begin of new bar:
(d-MoveToMeasureLeft)
(d-MoveToMeasureRight)
(d-UnsetMark)
)
(define (CustomDeleteBarline)
(let ((type (d-GetType)) );don't try it if not at the end of bar
(if (or (equal? type "Appending" ) (equal? type "None" ) )
(begin (d-SetMark)
(if (d-MoveToMeasureRight) ;;we don't want to delete next bar if there isn't one!
(begin (d-MeasureLeft) ;; Now we're at the beginning of that measure
(d-Cut)
(d-DeleteMeasure)
(d-Paste) )
(d-UnsetMark) ;this is to clear the mark if we set it, but were at end of staff
)))))
;MakeDuration: makes a tied note conglomerate of total duration Duration.
;set Side to "Left" to have the shorter component durations on left, "Right" for other way.
;note that using "Left will leave the rightmost note tied since we will tie into next bar.
;IsConsecutive is set to #t when it recurses in order to make it add a dot instead of adding the next TryDuration. Externally, call it always set to #f
;externally, call with TryDuration=0 to start with trying out whole notes. Internally it will crank this up as it recurses.
(define (MakeDuration Duration Side TryDuration IsConsecutive)
(let ((EffectiveDuration 0))
(set! EffectiveDuration (/ Duration TupletScaleFactor)) ;if inside a tuplet, need to
;account for that by extending the effective duration proportionately.
(if (and (> Duration 0) (equal? (remainder 256 (denominator EffectiveDuration)) 0) ) ;check for valid Duration
(begin ;when EffectiveDuration is a valid duration...
(if (<= (expt 1/2 TryDuration) EffectiveDuration) ;see if we should add note of length TryDuration
(begin
(if IsConsecutive
(begin
(if (equal? Side "Right") (d-MoveCursorLeft));b/c when adding on the Right, we moved the cursor Right already
(d-AddDot) ;if previous duration was there, just add a dot.
(if (equal? Side "Right") (d-MoveCursorRight));returning it to its former position
)
(begin ;if previous duration wasn't...
(set! IsConsecutive #t) ;so that next smaller duration will know to just add a dot if it's there
(InsertOn Side TryDuration)
)
)
(set! Duration (- Duration (* (expt 1/2 TryDuration) TupletScaleFactor)));now modify true Duration by what we just added.
(if (and (equal? Duration 0) (equal? Side "Right")) ;rightmost note entered on Side=Right, don't leave tied.
(begin
(d-MoveCursorLeft)
(d-ToggleTie)
(d-MoveCursorRight)
)
)
)
(set! IsConsecutive #f) ;when we don't add this TryDuration, set this to #f.
)
(if (<= TryDuration 8)
(MakeDuration Duration Side (+ 1 TryDuration) IsConsecutive)
)
)
#f
)
);let
)
(define (InsertOn Side Duration) ;inserts a note of duration TryDuration, and makes it tied. denom of Duration must be power of 2.
(d-Paste) ;paste, but then must get on top of the notes just pasted...
(d-MoveCursorLeft) ;now we're on it.
(d-Change0) ;start with whole,
(while (> Duration 0) ;and keep diminishing until we got it.
(begin
(d-Diminish)
(set! Duration (- Duration 1))
)
)
(d-ToggleTie)
(if (equal? Side "Right") (d-MoveCursorRight) )
)
;Here's the AuditThisStaff function, it returns #f if there is a problem in a measure in the current staff that is not fixed else returns true
(define (AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?) ;;set Pad? to #t if we should add blanks to underfull bars.
(let ( (Counter 0) (Excess 0) (LeftOver 0)(Inquiry #f))
;Counter keeps track of the duration of the notes of the bar as we proceed chord by chord.
;Debugger can be useful for bug-fixing
(define (Debugger)
(begin (d-RefreshDisplay)
(if (not (d-GetUserInput "Debug Message"
(string-append "Counter:" (number->string Counter) "\nTupletScaleFactor:" (number->string TupletScaleFactor) "\nTimeSig:" (number->string
TimeSig)
) "Hit OK when ready" ) ) (#f) )
))
(define (GetTimeSigChange)
(set! TimeSig (GetPrevailingTimesig #t))
);GetTimeSig
(define (NextBreakInMeasure) ;move to next object in measure, skipping objects of no duration, return #t if we found something with nonzero duration
(let ((GNB 0)(Moved #f))
(while
(and
(d-NextObjectInMeasure)
(set! Moved #t) ;make sure we know we moved
(equal? (GetNoteBeat) 0) ;do this so we don't run GetNoteBeat twice on same object (it could mess up counts?)
)
)
(and Moved (not (equal? (GetNoteBeat) 0))) ;return #t if we Moved and found something with nonzero duration
)
)
(define (GetNoteBeat ) ;get duration of a note as a fraction of a whole note, e.g. dotted quarter = 3/8
(let ((note 0) (len 0 ) (DotIndex 0) (NumDots 0) (NoteBeat 0))
(begin
(if (equal? (d-GetType) "TIMESIG")
(if (equal? Counter 0) ;encountering a TimeSig change mid-measure requires user intervention
(GetTimeSigChange)
(begin
(d-InfoDialog "This time signature change is in the middle of the bar.\n
Please run the command again after you've fixed this.")
(set! NoteBeat #f) ;this should halt the script after it's returned.
)
)
)
(if (equal? (d-GetType) "LILYDIRECTIVE")
(begin
(set! NoteBeat (/ (d-GetDurationInTicks) 1536))
(set! IgnoreDurationError (d-Directive-standalone? "!"))) ;;This tag tells Denemo to ignore duration errors in this measure.
)
(if (equal? (d-GetType) "CHORD" )
(if (not (d-ToggleGrace "query=")) ;if it's not a grace, continue; otherwise, leave it as 0.
(set! NoteBeat (/ (d-GetDurationInTicks) 1536))
)
)
NoteBeat ;return NoteBeat
)
)
);GetNoteBeat
(define (R-StartTuplet TupletFactor) ;note: doesn't modify TupletScaleFactor.
(begin
(d-StartTriplet)
(if (boolean? (d-GetTuplet))
(d-MoveCursorLeft))
(d-SetTuplet (number->string TupletFactor ) )
(d-MoveCursorRight)
)
)
(define (LoopThroughBar) ;stops once we've met or surpassed the measure size, or run out of new notes.
(if (and (< Counter TimeSig) (d-NextObjectInMeasure) ) ;as long as the Counter is less than a full bar, and there's more stuff to process...
(begin
(set! Counter (+ Counter (GetNoteBeat)) ) ;we increment the Counter,
(LoopThroughBar) ;and keep going until done with the bar.
)
)
(set! CheckScore::error-position (GetPosition))
)
;here's the actual AuditThisStaff algorithm
(set! IgnoreDurationError #f)
(while (d-PrevObjectInMeasure)) ;go to beginning of measure
(set! Counter (+ Counter (GetNoteBeat)) );read the first note in to get started...NOTE: if GetNoteBeat= #f this will terminate execution.
(LoopThroughBar) ;then loop through the rest of the bar until counter equals or overshoots the measure size in TimeSig,
; or the measure's done being processed
;(disp "check Counter " Counter " and time sig " TimeSig "and " IgnoreDurationError " ok")
;;ticks have granularity of 1 so we cannot accept a 1 discrepancy as meaning anything once we have reached a certain number of ticks - how many I am not sure, but try 383, fails with septuplet, try 255
(if (and (None?) (not Pad?))
(set! Counter TimeSig))
(if (= Counter 0)
(set! Counter TimeSig));;;allow empty measures
(if (or (d-Directive-chord? "WholeMeasureRest")(d-Directive-standalone? "MultiMeasureRests"))
(begin
(d-WarningDialog (_ "Change whole measure rests and multi-measure rests to actual rests and re-run"))
#f)
(begin
(if IgnoreDurationError
(begin
(set! Counter TimeSig)))
(let ((top (numerator Counter)) (bottom (denominator Counter)))
(if (and (> top 254) (equal? TimeSig (/ (1+ top) bottom)))
(set! Counter (/ (1+ top) bottom))))
(if (< Counter TimeSig) ;if measure too small, (going back first)
(if Pad? ; and the user wants us to pad,
(begin
(if (not (or (equal? (d-GetType) "None") (equal? (d-GetType) "Appending")))
(d-MoveCursorRight) ) ;Get to end of bar, past last object.
(if Blank?
(MakeRest (- TimeSig Counter) 0 "Blank") ;fill 'er up
(MakeRest (- TimeSig Counter) 0 "" )
)
(if (d-MoveToMeasureRight)
(AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?) ;if not done, move on and go from there.
#t ;otherwise return true
)
)
(if MergeAndSplit? ;if user wants to merge/split,
(if (d-MoveToMeasureRight) ;we see if there is a next measure; if so we want to merge the two and redo this measure.
(begin
(d-MoveCursorLeft) ;move onto the barline
(CustomDeleteBarline) ;delete it
(AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?);now do the measure again
)
#t ;return true if there's no more, we're done with staff.
)
;if NOT supposed to merge/split...
(if (d-MoveToMeasureRight) ;see if at end of staff.
(begin ;if not at end of staff...
(d-MoveToMeasureLeft)
#f ;if we're not supposed to pad or merge/split, stop here. This measure had prob's
)
#t ;otherwise, staff is good.
)))
;if it wasn't too small...
(if (and (not IgnoreDurationError) (equal? Counter TimeSig)) ; and if measure is exactly full now (and not just because we are ignoring the duration error)
(if (NextBreakInMeasure) ;see if there's extra stuff that has duration,
(if MergeAndSplit? ;if there IS and we're supposed to merge/split...
(begin
(if (not (= TupletScaleFactor 1)) (d-EndTuplet)) ;if need be, end the tuplet in this bar, then restart it in next
(SplitIntoNext) ;cut off extra stuff (ending up in next bar)
(if (not (= TupletScaleFactor 1)) (R-StartTuplet TupletScaleFactor)) ;restart the tuplet in following bar if needed
(AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?) ; rebar from that point onward.
)
#f ;if user doesn't want us to split,return false.
; this bar is over-full, user will fix.
)
(begin ;if there's NOT extra stuff in this measure...
(if (not (None?))
(d-MoveCursorRight))
(if (not (= TupletScaleFactor 1)) (d-EndTuplet)) ;if need be, end the tuplet in this bar, then restart it in next
(if (d-MoveToMeasureRight) ;if there's another measure...
(begin
(if (not (= TupletScaleFactor 1)) (R-StartTuplet TupletScaleFactor)) ;restart the tuplet in following bar if needed
(AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?);having gone on to next measure, rebar again.
)
#t ;make sure we return true-done with staff.
)
)
)
;;;measure not exact or we are ignoring the duration error
(if (and MergeAndSplit? (> Counter TimeSig)) ; if the measure is overfull, see if want to split.
(begin
(set! Excess (- Counter TimeSig)) ;this is how much of that note to put in next measure,
(if (equal? (remainder 256 (denominator (/ Excess TupletScaleFactor))) 0) ;if we don't have to start a tuplet, we're good.
(begin
;query the user: should we split the note, or let him/her do it?
(if (not SplitAll) (set! Inquiry (d-GetOption (string-append (_ "Split This Note") stop (_ "Split All") stop (_ "Stop Here") stop))) )
;need to stop if we hit cancel
(if (equal? Inquiry (_ "Split All")) (set! SplitAll 1000))
(if (or SplitAll (equal? Inquiry (_ "Split This Note")) (equal? Inquiry (_ "Split All")))
(begin ;we're going to split across the barline and march on.
(if SplitAll
(begin
(set! SplitAll (1- SplitAll))
(if (zero? SplitAll)
(set! SplitAll #f))))
(set! LeftOver (- (GetNoteBeat) Excess)) ;duration that stays in left measure.
(if (d-NextObjectInMeasure) ;if there're more stuff after the current stuff, chop it off to deal with it next bar
(begin
(SplitIntoNext)
;now go back onto the note that should be split by barline.
(d-MoveToMeasureLeft)
(d-MoveToMeasureRight)
(d-MoveCursorLeft) ;now on barline.
(d-MoveCursorLeft) ;now we're back on the last note of that bar.
)
)
;now we gotta get a copy of the note to split.
(d-SetMark)
(d-Cut) ;now the right note's cut onto the clipboard...
(MakeDuration LeftOver "Left" 0 #f) ;syntax to add custom duration to each measure, shortest durations to left.
(if (not (= TupletScaleFactor 1)) ;end the tuplets in this bar if need be, restart in next...
(begin (d-MoveCursorRight) (d-EndTuplet)) )
(if (not (d-MoveToMeasureRight)) (d-InsertMeasureAfter)) ;need to add a new measure if it ain't there.
(if (not (= TupletScaleFactor 1)) ;start the tuplets in next bar if need be.
(R-StartTuplet TupletScaleFactor) )
(MakeDuration Excess "Right" 0 #f) ;add with shortest durations on right
(AuditThisStaff TimeSig Pad? Blank? MergeAndSplit?) ;continue
)
#f ;if user cancelled or Stopped Here, return false
)
)
(begin
(d-InfoDialog (_ "This measure's discrepancy requires a tuplet.\nPlease adjust manually and run this script again."))
#f ;return false
)
)
)
;;; measure is not exact and merging is not asked for
IgnoreDurationError ;just return #f as they don't want to Merge/Split, unless it is to be ignored
))))))) ;define AuditThisStaff
;now actually do it:
(let ((Pad #f) (Blank #f)(MergeAndSplit #f))
(set! Input1 (d-GetOption (string-append
(_ "Rebar-Merge underfull, split overfull bars") stop
(_ "Pad underfull bars with rests") stop
(_ "Pad underfull bars with blank rests") stop)))
(set! Blank (equal? Input1 (_ "Pad underfull bars with blank rests")))
(set! Pad (or (equal? Input1 (_ "Pad underfull bars with rests"))(equal? Input1 (_ "Pad underfull bars with blank rests") )))
(set! MergeAndSplit (equal? Input1 (_ "Rebar-Merge underfull, split overfull bars")))
(if Input1 (set! Input2 (d-GetOption (string-append (_ "Entire Staff") stop (_ "This Point Onwards") stop (_ "Entire Movement") stop ))) )
(if (and Input1 Input2) ;don't go if user cancelled
(let ((position #f)(spillover (d-GetBooleanPref "spillover")))
(d-SetPrefs "<spillover>0</spillover>")
(if (equal? Input2 (_ "Entire Movement")) (set! ScanAllStaffs #t))
(set! position (GetPosition)) ;let's try to return cursor to here when done.
(if ScanAllStaffs (while (d-MoveToStaffUp))) ;Start at top staff, top voice
(if (not (equal? Input2 (_ "This Point Onwards"))) (d-MoveToBeginning))
(set! InitialTimeSig (GetPrevailingTimesig #t))
(let ((AllOK #t))
(if (not (AuditThisStaff InitialTimeSig Pad Blank MergeAndSplit)) (set! AllOK #f))
(while (and ScanAllStaffs AllOK (or (d-MoveToVoiceDown) (d-MoveToStaffDown))) ;RebarAll if appropriate.
(begin
(d-MoveToBeginning)
(if (not (AuditThisStaff InitialTimeSig Pad Blank MergeAndSplit) ) (set! AllOK #f)) ;if AuditThisStaff returns #f, need to stop.
)
)
(set! ReBar::return AllOK)
(if AllOK
(apply d-GoToPosition position) ;end where we began, unless there were problems.
))
(if spillover (d-SetPrefs "<spillover>1</spillover>"))))))
(d-DecreaseGuard)
|
