in Snippets - LilyPond

Editorial annotations 151
A tiny e
A big c
Changing the appearance of a slur from solid to dotted or
dashed
The appearance of slurs may be changed from solid to dotted or dashed.
\relative c' {
c4( d e c)
\slurDotted
c4( d e c)
\slurSolid
c4( d e c)
\slurDashed
c4( d e c)
\slurSolid
c4( d e c)
}
Coloring notes depending on their pitch
It is possible to color note heads depending on their pitch and/or their names: the function used
in this example even makes it possible to distinguish enharmonics.
%Association list of pitches to colors.
#(define color-mapping
(list
(cons (ly:make-pitch 0 0 NATURAL) (x11-color 'red))
(cons (ly:make-pitch 0 0 SHARP) (x11-color 'green))
(cons (ly:make-pitch 0 1 FLAT) (x11-color 'green))
(cons (ly:make-pitch 0 2 NATURAL) (x11-color 'red))
(cons (ly:make-pitch 0 2 SHARP) (x11-color 'green))
(cons (ly:make-pitch 0 3 FLAT) (x11-color 'red))
(cons (ly:make-pitch 0 3 NATURAL) (x11-color 'green))
(cons (ly:make-pitch 0 4 SHARP) (x11-color 'red))
(cons (ly:make-pitch 0 5 NATURAL) (x11-color 'green))
(cons (ly:make-pitch 0 5 FLAT) (x11-color 'red))
(cons (ly:make-pitch 0 6 SHARP) (x11-color 'red))
(cons (ly:make-pitch 0 1 NATURAL) (x11-color 'blue))
(cons (ly:make-pitch 0 3 SHARP) (x11-color 'blue))
(cons (ly:make-pitch 0 4 FLAT) (x11-color 'blue))
(cons (ly:make-pitch 0 5 SHARP) (x11-color 'blue))
(cons (ly:make-pitch 0 6 FLAT) (x11-color 'blue))))
%Compare pitch and alteration (not octave).
#(define (pitch-equals? p1 p2)
(and
(= (ly:pitch-alteration p1) (ly:pitch-alteration p2))
(= (ly:pitch-notename p1) (ly:pitch-notename p2))))