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[lilypond.git] / Documentation / snippets / generating-random-notes.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 = "
+Este fragmento de código basado en Scheme genera
+24 notas aleatorias (o tantas como se necesiten), basándose en la
+hora actual (o en cualquier número pseudo-aleatorio que se
+especifique en su lugar, para obtener las mismas notas aleatorias
+cada vez): es decir, para obtener distintos patrones de notas,
+sólo tiene que modificar este número.
+
+"
+  doctitlees = "Generación de notas aleatorias"
+
+  texidoc = "
+This Scheme-based snippet generates 24 random notes (or as many as
+required), based on the current time (or any randomish number specified
+instead, in order to obtain the same random notes each time): i.e., to
+get different random note patterns, just change this number.
+
+"
+  doctitle = "Generating random notes"
+} % begin verbatim
+
+\score {
+  {
+    #(let ((random-state (seed->random-state (current-time))))
+       (ly:export
+        (make-sequential-music
+         (map (lambda (x)
+                (let ((idx (random 12 random-state)))
+                  (make-event-chord
+                   (list
+                    (make-music 'NoteEvent
+                                'duration (ly:make-duration 2 0 1 1)
+                                'pitch (ly:make-pitch
+                                        (quotient idx 7)
+                                        (remainder idx 7)
+                                        0))))))
+              (make-list 24)))))
+  }
+}