Documentation/snippets/broken-crescendo-hairpin.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 "2.17.6"

\header {
  lsrtags = "contemporary-notation, expressive-marks, symbols-and-glyphs"

  texidoc = "
In order to make parts of a crescendo hairpin invisible, the following
method is used: A white rectangle is drawn on top of the respective
part of the crescendo hairpin, making it invisible.  The rectangle is
defined as postscript code within a text markup.

To fine-tune the position and size of the markup, the number preceding
@code{setgray} in the postscript definition can be set to a value less
than one, making it grey.  The two numbers before @code{scale} in the
postscript code are responsible for the width and height of the
rectangle, the two numbers before @code{translate} change the x- and
y-origin of the rectangle.


Make sure to put the hairpin in a lower layer than the text markup to
draw the rectangle over the hairpin.

"
  doctitle = "Broken Crescendo Hairpin"
} % begin verbatim


\relative c' {
  <<
    {
      \dynamicUp
      \override DynamicLineSpanner.staff-padding = #4
      r2 r16 c'8.\pp r4
    }
    \\
    {
      \override DynamicLineSpanner.layer = #0
      des,2\mf\< ~
      \override TextScript.layer = #2
      des16_\markup {
        \postscript #"
          1.9 -8 translate
          5 4 scale
          1 setgray
          0 0 moveto
          0 1 lineto
          1 1 lineto
          1 0 lineto
          0 0 lineto
          fill"
      }
      r8. des4 ~ des16->\sff
    }
  >>
}