Lilypond中的着色音符

Question

lilypond可以以任意方式using

对笔记进行着色

\override NoteHead #'color = #red c

默认颜色为黑色。但我喜欢用音高为所有音符着色，这样我的孩子就可以更容易地学会识别音符，因为c，d，e，f，...与它自己的颜色有关。上面允许我这样做，但是相当冗长。

是否有一种快捷方式，某种类型的宏，允许我按照以下方式执行某些操作：

redc greend bluee

甚至用音高覆盖每个音符的默认颜色，这样我甚至可以简单地执行：

c d e

并且他们每个人都有不同的颜色？

Answer 1

snippets中有一个例子：

%Association list of pitches to colors.
#(define color-mapping
  (list
    (cons (ly:make-pitch 0 0 0) (x11-color 'red))
    (cons (ly:make-pitch 0 0 1/2) (x11-color 'green))
    (cons (ly:make-pitch 0 1 -1/2) (x11-color 'green))
    (cons (ly:make-pitch 0 2 0) (x11-color 'red))
    (cons (ly:make-pitch 0 2 1/2) (x11-color 'green))
    (cons (ly:make-pitch 0 3 -1/2) (x11-color 'red))
    (cons (ly:make-pitch 0 3 0) (x11-color 'green))
    (cons (ly:make-pitch 0 4 1/2) (x11-color 'red))
    (cons (ly:make-pitch 0 5 0) (x11-color 'green))
    (cons (ly:make-pitch 0 5 -1/2) (x11-color 'red))
    (cons (ly:make-pitch 0 6 1/2) (x11-color 'red))
    (cons (ly:make-pitch 0 1 0) (x11-color 'blue))
    (cons (ly:make-pitch 0 3 1/2) (x11-color 'blue))
    (cons (ly:make-pitch 0 4 -1/2) (x11-color 'blue))
    (cons (ly:make-pitch 0 5 1/2) (x11-color 'blue))
    (cons (ly:make-pitch 0 6 -1/2) (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))))

#(define (pitch-to-color pitch)
  (let ((color (assoc pitch color-mapping pitch-equals?)))
    (if color
      (cdr color))))

#(define (color-notehead grob)
  (pitch-to-color
    (ly:event-property (ly:grob-property grob 'cause) 'pitch)))

\score {
  \new Staff \relative c' {
    \override NoteHead #'color = #color-notehead
    c8 b d dis ees f g aes
  }
}

Answer 2

It is possible to color note heads depending on their pitch?处有一个问题LilyPond Snippet Repository。通过单击五线谱获得the answer。

Answer 3

好的，对于我今年早些时候在剑桥买的书Kid's Keyboard Course - Book #1，我现在有了这种颜色编码：

#(define color-mapping
  (list
    (cons (ly:make-pitch 0 0 0) (x11-color 'magenta))
    (cons (ly:make-pitch 0 1 -1/2) (x11-color 'grey))
    (cons (ly:make-pitch 0 1 0) (x11-color 'grey))
    (cons (ly:make-pitch 0 1 1/2) (x11-color 'grey))
    (cons (ly:make-pitch 0 2 0) (x11-color 'red))
    (cons (ly:make-pitch 0 2 1/2) (x11-color 'red))
    (cons (ly:make-pitch 0 3 -1/2) (x11-color 'green))
    (cons (ly:make-pitch 0 3 0) (x11-color 'green))
    (cons (ly:make-pitch 0 4 -1/2) (x11-color 'blue))
    (cons (ly:make-pitch 0 4 0) (x11-color 'blue))
    (cons (ly:make-pitch 0 4 1/2) (x11-color 'blue))
    (cons (ly:make-pitch 0 5 0) (x11-color 'yellow))
    (cons (ly:make-pitch 0 5 -1/2) (x11-color 'yellow))
    (cons (ly:make-pitch 0 5 1/2) (x11-color 'yellow))
    (cons (ly:make-pitch 0 6 1/2) (x11-color 'purple))
    (cons (ly:make-pitch 0 6 0) (x11-color 'purple))
    (cons (ly:make-pitch 0 6 -1/2) (x11-color 'purple))))