input/new/positioning-multi--measure-rests.ly

   1 \version "2.11.42"
   2 \header {
   3   lsrtags = "rhythms,tweaks-and-overrides"
   4   texidoc = "
   5 Unlike ordinary rests, there is no predefined command
   6 to change the vertical position on the staff of a multi-measure
   7 rest symbol of either form by attaching it to a note.  However,
   8 in polyphonic music multi-measure rests in odd-numbered and
   9 even-numbered voices are vertically separated.  The positioning
  10 of multi-measure rests can be controlled as follows:
  11  "
  12   doctitle = "Positioning multi-measure rests"
  13 }
  14
  15 \relative c'' {
  16   % Multi-measure rests by default are set under the second line
  17   R1
  18   % They can be moved with an override
  19   \override MultiMeasureRest #'staff-position = #-2
  20   R1
  21   % A value of 0 is the default position;
  22   % the following trick moves the rest to the center line
  23   \override MultiMeasureRest #'staff-position = #-0.01
  24   R1
  25   % Multi-measure rests in odd-numbered voices are under the top line
  26   << { R1 } \\ { a1 } >>
  27   % Multi-measure rests in even-numbered voices are under the bottom line
  28   << { c1 } \\ { R1 } >>
  29   % They remain separated even in empty measures
  30   << { R1 } \\ { R1 } >>
  31   % This brings them together even though there are two voices
  32   \compressFullBarRests
  33   <<
  34     \revert MultiMeasureRest #'staff-position
  35     { R1*3 }
  36     \\
  37     \revert MultiMeasureRest #'staff-position
  38     { R1*3 }
  39   >>
  40 }