input/new/broken-crescendo-hairpin.ly

   1 \version "2.11.38"
   2
   3 \header {
   4   lsrtags = "expressive-marks"
   5   texidoc = "
   6 In order to make parts of a crescendo hairpin invisible, the following
   7 method is used: A white rectangle is drawn on top of the respective
   8 part of the crescendo hairpin, making it invisible.  The rectangle is
   9 defined as postscript code within a text markup.
  10
  11 To fine-tune the position and size of the markup, the number
  12 preceding @code{setgray} in the postscript definition can be set to a
  13 value less than one, making it grey.  The two numbers before @code{scale}
  14 in the postscript code are responsible for the width and height of the
  15 rectangle, the two numbers before @code{translate} change the x- and
  16 y-origin of the rectangle.
  17
  18 Make sure to put the hairpin in a lower layer than the text markup to
  19 draw the rectangle over the hairpin.
  20 "
  21   doctitle = "Broken crescendo hairpin"
  22 }
  23
  24 \relative c' {
  25   << {
  26     \dynamicUp
  27     \override DynamicLineSpanner #'staff-padding = #4
  28     r2 r16 c'8.\pp r4
  29   }
  30   \\
  31   {
  32     \override DynamicLineSpanner #'layer = #0
  33     des,2\mf\< ~
  34     \override TextScript #'layer = #2
  35     des16_\markup {
  36       \postscript #"1.9 -8 translate 5 4 scale 1 setgray 0 0 moveto 0 1
  37         lineto 1 1 lineto 1 0 lineto 0 0 lineto fill"
  38     }
  39     r8. des4 ~ des16->\sff
  40   } >>
  41 }