X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=input%2Flsr%2Ftransposing-pitches-with-minimum-accidentals-smart-transpose.ly;h=d6b7695aa4ac4db12e17f627620190e26f62bcfb;hb=5b2bdf8c532aa1b4aa8626f6847938f2ef4ba1be;hp=45e08d8f9337016ae7df5c074b2bc248d0f857ec;hpb=24d7a2abc788061a4f7a81ee3c2a9f330ddca93f;p=lilypond.git diff --git a/input/lsr/transposing-pitches-with-minimum-accidentals-smart-transpose.ly b/input/lsr/transposing-pitches-with-minimum-accidentals-smart-transpose.ly index 45e08d8f93..d6b7695aa4 100644 --- a/input/lsr/transposing-pitches-with-minimum-accidentals-smart-transpose.ly +++ b/input/lsr/transposing-pitches-with-minimum-accidentals-smart-transpose.ly @@ -1,11 +1,71 @@ %% Do not edit this file; it is auto-generated from input/new %% This file is in the public domain. -\version "2.11.38" +\version "2.12.0" \header { +doctitlees = "Transportar música con el menor número de alteraciones" +texidoces = " +Este ejemplo utiliza código de Scheme para forzar las +modificaciones enarmónicas de las notas, y así tener el menor +número de alteraciones accidentales. En este caso se aplican las +siguientes reglas: + +@itemize +@item +Se quitan las dobles alteraciones + +@item +Si sostenido -> Do + +@item +Mi sistenido -> Fa + +@item +Do bemol -> Si + +@item +Fa bemol -> Mi + +@end itemize + +De esta forma se selecciona el mayor número de notas enarmónicas +naturales. + +" + +doctitlede = "Noten mit minimaler Anzahl an Versetzungszeichen transponieren." + +texidocde = "Dieses Beispiel benutzt Scheme-Code, um enharmonische +Verwechslungen für Noten zu erzwingen, damit nur eine minimale Anzahl +an Versetzungszeichen ausgegeben wird. In diesem Fall gelten die +folgenden Regeln: + +@itemize +@item +Doppelte Versetzungszeichen sollen entfernt werden + +@item +His -> C + +@item +Eis -> F + +@item +Ces -> B + +@item +Fes -> E + +@end itemize + +Auf diese Art werden am meisten natürliche Tonhöhen als enharmonische +Variante gewählt. +" + + lsrtags = "pitches" - texidoc = "This example uses some Scheme code to enforce enharmonic modifications for -notes in order to have the minimum number of accidentals. In this -case, the following rules apply: + texidoc = "This example uses some Scheme code to enforce enharmonic +modifications for notes in order to have the minimum number of +accidentals. In this case, the following rules apply: @itemize @item @@ -30,10 +90,12 @@ In this manner, the most natural enharmonic notes are chosen. doctitle = "Transposing music with minimum accidentals" } % begin verbatim + #(define (naturalize-pitch p) (let* ((o (ly:pitch-octave p)) - (a (* 4 (ly:pitch-alteration p))) - ; alteration, a, in quarter tone steps, for historical reasons + (a (* 4 (ly:pitch-alteration p))) + ; alteration, a, in quarter tone steps, + ; for historical reasons (n (ly:pitch-notename p))) (cond ((and (> a 1) (or (eq? n 6) (eq? n 2))) @@ -45,8 +107,8 @@ In this manner, the most natural enharmonic notes are chosen. (cond ((> a 2) (set! a (- a 4)) (set! n (+ n 1))) ((< a -2) (set! a (+ a 4)) (set! n (- n 1)))) - (if (< n 0) (begin (set! o (- o 1)) (set! n (+ n 7)))) - (if (> n 6) (begin (set! o (+ o 1)) (set! n (- n 7)))) + (if (< n 0) (begin (set! o (- o 1)) (set! n (+ n 7)))) + (if (> n 6) (begin (set! o (+ o 1)) (set! n (- n 7)))) (ly:make-pitch o n (/ a 4)))) #(define (naturalize music) @@ -54,32 +116,32 @@ In this manner, the most natural enharmonic notes are chosen. (e (ly:music-property music 'element)) (p (ly:music-property music 'pitch))) (if (pair? es) - (ly:music-set-property! + (ly:music-set-property! music 'elements (map (lambda (x) (naturalize x)) es))) (if (ly:music? e) - (ly:music-set-property! + (ly:music-set-property! music 'element (naturalize e))) (if (ly:pitch? p) - (begin - (set! p (naturalize-pitch p)) - (ly:music-set-property! music 'pitch p))) + (begin + (set! p (naturalize-pitch p)) + (ly:music-set-property! music 'pitch p))) music)) naturalizeMusic = #(define-music-function (parser location m) - (ly:music?) - (naturalize m)) + (ly:music?) + (naturalize m)) -music = \relative c' { c4 d e g } +music = \relative c' { c4 d e g } \score { \new Staff { - \transpose c ais \music - \naturalizeMusic \transpose c ais \music - \transpose c deses \music - \naturalizeMusic \transpose c deses \music + \transpose c ais { \music } + \naturalizeMusic \transpose c ais { \music } + \transpose c deses { \music } + \naturalizeMusic \transpose c deses { \music } } - \layout { ragged-right = ##t } + \layout { } }