input/new/clip-systems.ly

   1 \version "2.11.61"
   2 \header {
   3   lsrtags = "paper-and-layout"  % a new tag like "Mixing text and music" or
   4 % "Special output" might be more adequate -jm
   5   texidoc = "
   6 This code shows how to clip (extract) snippets from a full score.
   7
   8 This file needs to be run separately with @code{-dclip-systems}; the
   9 snippets page may not adequately show the results.
  10
  11 The result will be files named
  12 @file{@var{base}-from-@var{start}-to-@var{end}[-@var{count}].eps}.
  13
  14 @itemize
  15 @item
  16 If system starts and ends are included, they include extents of the
  17 System grob, e.g., instrument names.
  18
  19 @item
  20 Grace notes at the end point of the region are not included.
  21
  22 @item
  23 Regions can span multiple systems.  In this case, multiple EPS files
  24 are generated.
  25
  26 @end itemize
  27 "
  28   doctitle = "Clip systems"
  29 }
  30
  31 #(ly:set-option 'clip-systems)
  32 #(set! output-count 1)
  33
  34 origScore = \score {
  35   \relative c' {
  36     \set Staff.instrumentName = #"bla"
  37     c1
  38     d1
  39     \grace c16 e1
  40     \key d \major
  41     f1 \break
  42     \clef bass
  43     g,1
  44     fis1
  45   }
  46 }
  47
  48 \book {
  49   \score {
  50     \origScore
  51     \layout {
  52       % Each clip-region is a (START . END) pair
  53       % where both are rhythmic-locations.
  54
  55       % (make-rhythmic-locations BAR-NUMBER NUM DEN)
  56       % means NUM/DEN whole-notes into bar numbered BAR-NUMBER
  57
  58       clip-regions = #(list
  59       (cons
  60        (make-rhythmic-location 2 0 1)
  61        (make-rhythmic-location 4 0 1))
  62
  63       (cons
  64        (make-rhythmic-location 0 0 1)
  65        (make-rhythmic-location 4 0 1))
  66
  67       (cons
  68        (make-rhythmic-location 0 0 1)
  69        (make-rhythmic-location 6 0 1))
  70       )
  71     }
  72   }
  73 }
  74
  75 #(set! output-count 0)
  76 #(ly:set-option 'clip-systems #f)
  77
  78 \book {
  79   \score { \origScore }
  80   \markup { \bold \fontsize #6 clips }
  81   \score {
  82     \lyrics {
  83       \markup { from-2.0.1-to-4.0.1-clip.eps }
  84       \markup {
  85         \epsfile #X #30.0 #(format #f "~a-1-from-2.0.1-to-4.0.1-clip.eps"
  86                             (ly:parser-output-name parser)) }
  87     }
  88   }
  89 }