in Snippets - LilyPond

Editorial annotations 164
String number extender lines
Make an extender line for string number indications, showing that a series of notes is supposed
to be played all on the same string.
stringNumberSpanner =
#(define-music-function (parser location StringNumber) (string?)
#{
\override TextSpanner #'style = #'solid
\override TextSpanner #'font-size = #-5
\override TextSpanner #'(bound-details left stencil-align-dir-y) = #CENTER
\override TextSpanner #'(bound-details left text) = \markup { \circle \number #StringNum
#})
\relative c {
\clef "treble_8"
\stringNumberSpanner "5"
\textSpannerDown
a8\startTextSpan
b c d e f\stopTextSpan
\stringNumberSpanner "4"
g\startTextSpan a
bes4 a g2\stopTextSpan
}
8
5
4
Using PostScript to generate special note head shapes
When a note head with a special shape cannot easily be generated with graphic markup, Post-
Script code can be used to generate the shape. This example shows how a parallelogram-shaped
note head is generated.
parallelogram =
#(ly:make-stencil (list 'embedded-ps
"gsave
currentpoint translate
newpath
0 0.25 moveto
1.3125 0.75 lineto
1.3125 -0.25 lineto
0 -0.75 lineto
closepath
fill
grestore" )
(cons 0 1.3125)
(cons -.75 .75))
myNoteHeads = \override NoteHead #'stencil = \parallelogram
normalNoteHeads = \revert NoteHead #'stencil