Imported Upstream version 2.14.2

[lilypond.git] / Documentation / snippets / creating-a-sequence-of-notes-on-various-pitches.ly

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+%% 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 "2.14.0"
+
+\header {
+  lsrtags = "pitches"
+
+%% Translation of GIT committish: 70f5f30161f7b804a681cd080274bfcdc9f4fe8c
+  texidoces = "
+En una música que tenga muchas apariciones de la
+misma secuencia de notas a distintas alturas, podría ser de
+utilidad la siguiente función musical.  Admite una nota, de la que
+sólo se utiliza su altura.  Las funciones de apoyo en Scheme se
+han tomado prestadas del documento de \"Consejos y trucos\" de la
+versión 2.10 del manual.  Este ejemplo crea las duraciones
+rítmicas que se usan a todo lo largo de «Marte», de «Los Planetas»
+de Gustav Holst.
+
+"
+  doctitlees = "Crear una secuencia de notas a distintas alturas"
+
+  texidoc = "
+In music that contains many occurrences of the same sequence of notes
+at different pitches, the following music function may prove useful.
+It takes a note, of which only the pitch is used.   This example
+creates the rhythm used throughout Mars, from Gustav Holst's The
+Planets.
+
+"
+  doctitle = "Creating a sequence of notes on various pitches"
+} % begin verbatim
+
+#(define (make-note-req p d)
+   (make-music 'NoteEvent
+              'duration d
+              'pitch p))
+
+#(define (make-note p d)
+   (make-music 'EventChord
+              'elements (list (make-note-req p d))))
+
+#(define (make-triplet elt)
+   (make-music 'TimeScaledMusic
+              'denominator 3
+              'numerator 2
+              'element elt))
+
+rhythm =
+#(define-music-function (parser location note) (ly:music?)
+   "Make the rhythm in Mars (the Planets) at the given note's pitch"
+   (let ((p (ly:music-property
+             (car (ly:music-property note 'elements))
+             'pitch)))
+     (make-sequential-music
+      (list
+       (make-triplet (make-sequential-music
+                      (list
+                       (make-note p (ly:make-duration 3 0 2 3))
+                       (make-note p (ly:make-duration 3 0 2 3))
+                       (make-note p (ly:make-duration 3 0 2 3)))))
+       (make-note p (ly:make-duration 2 0))
+       (make-note p (ly:make-duration 2 0))
+       (make-note p (ly:make-duration 3 0))
+       (make-note p (ly:make-duration 3 0))
+       (make-note p (ly:make-duration 2 0))))))
+
+\new Staff {
+  \time 5/4
+  \rhythm c'
+  \rhythm c''
+  \rhythm g
+}