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Retallada de sistemes

This code shows how to clip (extract) snippets from a full score.

This file needs to be run separately with -dclip-systems; the snippets page may not adequately show the results. The result will be files named ‘base-from-start-to-end[-count].eps’.

If system starts and ends are included, they include extents of the System grob, e.g., instrument names.

Grace notes at the end point of the region are not included.

Regions can span multiple systems. In this case, multiple EPS files are generated.

#(ly:set-option 'clip-systems)
#(ly:set-option 'separate-page-formats "ps")
#(define output-suffix "1")

origScore = \score {
  \relative c' {
    \new Staff \with { instrumentName = "Instrument" }
    c1
    d1
    \grace c16 e1
    \key d \major
    f1 \break
    \clef bass
    g,1
    fis1
  }
}

\book {
  \score {
    \origScore
    \layout {
      % Each clip-region is a (START . END) pair
      % where both are rhythmic-locations.

      % (make-rhythmic-locations BAR-NUMBER NUM DEN)
      % means NUM/DEN whole-notes into bar numbered BAR-NUMBER

      clip-regions = #(list
      (cons
       (make-rhythmic-location 2 0 1)
       (make-rhythmic-location 4 0 1))

      (cons
       (make-rhythmic-location 0 0 1)
       (make-rhythmic-location 4 0 1))

      (cons
       (make-rhythmic-location 0 0 1)
       (make-rhythmic-location 6 0 1))
      )
    }
  }
}

#(ly:set-option 'clip-systems #f)
#(ly:set-option 'separate-page-formats #f)
#(define output-suffix #f)

\book {
  \score { \origScore }
  \markup { \bold \fontsize #6 clips }
  \score {
    \lyrics {
      \markup { from-2.0.1-to-4.0.1-clip.eps }
      \markup {
        \epsfile #X #30.0 #(format #f "~a-1-from-2.0.1-to-4.0.1-clip.eps"
                            (ly:parser-output-name)) }
    }
  }
}