X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=Documentation%2Fsnippets%2Ftransposing-pitches-with-minimum-accidentals-smart-transpose.ly;h=88ccaff75e8a54b01fd259719df8866e386923b7;hb=b01ca49c05566b73d690ae84fda6040b24fcf73f;hp=7e9acaf9946f15e6332def74096c9a1baf514d53;hpb=f99ae4cae742b0ea3ab3c2ac5c9d8f7bf1fbdeff;p=lilypond.git diff --git a/Documentation/snippets/transposing-pitches-with-minimum-accidentals-smart-transpose.ly b/Documentation/snippets/transposing-pitches-with-minimum-accidentals-smart-transpose.ly index 7e9acaf994..88ccaff75e 100644 --- a/Documentation/snippets/transposing-pitches-with-minimum-accidentals-smart-transpose.ly +++ b/Documentation/snippets/transposing-pitches-with-minimum-accidentals-smart-transpose.ly @@ -1,11 +1,15 @@ -%% Do not edit this file; it is auto-generated from LSR http://lsr.dsi.unimi.it +%% DO NOT EDIT this file manually; it is automatically +%% generated from LSR http://lsr.dsi.unimi.it +%% Make any changes in LSR itself, or in Documentation/snippets/new/ , +%% and then run scripts/auxiliar/makelsr.py +%% %% This file is in the public domain. -\version "2.13.1" +\version "2.14.0" \header { lsrtags = "pitches" -%% Translation of GIT committish: b2d4318d6c53df8469dfa4da09b27c15a374d0ca +%% Translation of GIT committish: 70f5f30161f7b804a681cd080274bfcdc9f4fe8c doctitlees = "Transportar música con el menor número de alteraciones" texidoces = " Este ejemplo utiliza código de Scheme para forzar las @@ -36,7 +40,8 @@ naturales. " -%% Translation of GIT committish: d96023d8792c8af202c7cb8508010c0d3648899d + +%% Translation of GIT committish: 0a868be38a775ecb1ef935b079000cebbc64de40 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 @@ -66,6 +71,36 @@ Variante gewählt. " +%% Translation of GIT committish: 4ab2514496ac3d88a9f3121a76f890c97cedcf4e + texidocfr = " +Cet exemple, grâce à un peu de code Scheme, donne la priorité aux +enharmoniques afin de limiter le nombre d'altérations supplémentaires. +La règle appliquable est : + +@itemize +@item +Les altérations doubles sont supprimées + +@item +Si dièse -> Do + +@item +Mi dièse -> Fa + +@item +Do bémol -> Si + +@item +Fa bémol -> Mi + +@end itemize + +Cette façon de procéder aboutit à plus d'enharmoniques naturelles. + +" + + doctitlefr = "Transposition et réduction du nombrer d'altérations accidentelles" + texidoc = " This example uses some Scheme code to enforce enharmonic modifications for notes in order to have the minimum number of accidentals. In this @@ -86,54 +121,54 @@ C flat -> B F flat -> E -In this manner, the most natural enharmonic notes are chosen. +In this manner, the most natural enharmonic notes are chosen. " doctitle = "Transposing pitches with minimum accidentals (\"Smart\" transpose)" } % 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 - (n (ly:pitch-notename p))) - (cond - ((and (> a 1) (or (eq? n 6) (eq? n 2))) - (set! a (- a 2)) - (set! n (+ n 1))) - ((and (< a -1) (or (eq? n 0) (eq? n 3))) - (set! a (+ a 2)) - (set! n (- n 1)))) - (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)))) - (ly:make-pitch o n (/ a 4)))) + (let ((o (ly:pitch-octave p)) + (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))) + (set! a (- a 2)) + (set! n (+ n 1))) + ((and (< a -1) (or (eq? n 0) (eq? n 3))) + (set! a (+ a 2)) + (set! n (- n 1)))) + (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)))) + (ly:make-pitch o n (/ a 4)))) #(define (naturalize music) - (let ((es (ly:music-property music 'elements)) - (e (ly:music-property music 'element)) - (p (ly:music-property music 'pitch))) - (if (pair? es) - (ly:music-set-property! - music 'elements - (map (lambda (x) (naturalize x)) es))) - (if (ly:music? e) - (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))) - music)) + (let ((es (ly:music-property music 'elements)) + (e (ly:music-property music 'element)) + (p (ly:music-property music 'pitch))) + (if (pair? es) + (ly:music-set-property! + music 'elements + (map (lambda (x) (naturalize x)) es))) + (if (ly:music? e) + (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))) + music)) naturalizeMusic = #(define-music-function (parser location m) - (ly:music?) - (naturalize m)) + (ly:music?) + (naturalize m)) music = \relative c' { c4 d e g } @@ -146,3 +181,4 @@ music = \relative c' { c4 d e g } } \layout { } } +