Documentation/snippets/changing-time-signatures-inside-a-polymetric-section-using--scaledurations.ly

   1 %% Do not edit this file; it is automatically
   2 %% generated from LSR http://lsr.dsi.unimi.it
   3 %% This file is in the public domain.
   4 \version "2.13.29"
   5
   6 \header {
   7   lsrtags = "rhythms, contexts-and-engravers"
   8
   9 %% Translation of GIT committish: 0b55335aeca1de539bf1125b717e0c21bb6fa31b
  10   texidoces = "
  11 La propiedad @code{measureLength}, junto con
  12 @code{measurePosition}, determina cuándo es necesario dibujar una
  13 línea divisoria.  Sin embargo, al utilizar
  14 @code{\\scaleDurations}, el escalado proporcional de las
  15 duraciones hace difícil introducir cambios de compás.  En este
  16 caso se debe establecer manualmente el valor de
  17 @code{measureLength} utilizando la función @code{ly:make-moment}.
  18 El segundo argumento debe ser el mismo que el segundo argumento de
  19 @code{\\scaleDurations}.
  20
  21 "
  22   doctitlees = "Modificar el compás dentro de una sección polimétrica utilizando @code{\\scaleDurations}"
  23
  24   texidoc = "
  25 The @code{measureLength} property, together with
  26 @code{measurePosition}, determines when a bar line is needed.  However,
  27 when using @code{\\scaleDurations}, the scaling of durations makes it
  28 difficult to change time signatures.  In this case,
  29 @code{measureLength} should be set manually, using the
  30 @code{ly:make-moment} callback.  The second argument must be the same
  31 as the second argument of @code{\\scaleDurations}.
  32
  33 "
  34   doctitle = "Changing time signatures inside a polymetric section using \\scaleDurations"
  35 } % begin verbatim
  36
  37 \layout {
  38   \context {
  39     \Score
  40     \remove "Timing_translator"
  41     \remove "Default_bar_line_engraver"
  42   }
  43   \context {
  44     \Staff
  45     \consists "Timing_translator"
  46     \consists "Default_bar_line_engraver"
  47   }
  48 }
  49
  50 <<
  51   \new Staff {
  52     \scaleDurations #'(8 . 5) {
  53       \time 6/8
  54       \set Timing.measureLength = #(ly:make-moment 6 5)
  55       b8 b b b b b
  56       \time 2/4
  57       \set Timing.measureLength = #(ly:make-moment 4 5)
  58       b4 b
  59     }
  60   }
  61   \new Staff {
  62     \clef bass
  63     \time 2/4
  64     c2 d e f
  65   }
  66 >>