Pierre Perol-Schneider wrote
> Thanks Paul, your code is much better than the one I was going to put.
> Looks like a Christmas tree :)
Thanks Pierre, and thanks for figuring out how to do the note heads in the
first place! That was a clever solution.
I've made the changes you suggested, and made it so that it's possible to
assign different colors to sharp, flat, double-sharp, and double-flat
alterations, if you want. It's more verbose this way, but also more
flexible. See below...
-Paul
%%%%%%%%%%%%%%%%%
\version "2.17.28"
coloredNoteHeads =
#(lambda (grob)
(let* ((fsz (ly:grob-property grob 'font-size 0.0))
(mult (magstep fsz))
(stl '())
(dur-log (ly:grob-property grob 'duration-log))
(pch (ly:event-property (event-cause grob) 'pitch))
(nnm (ly:pitch-notename pch))
(alt (ly:pitch-alteration pch))
(clr (case nnm
((0) (case alt
((-1) red) ;; Cbb
((-1/2) red) ;; Cb
((0) red) ;; C
((1/2) red) ;; C#
((1) red) ;; C##
(else black)))
((1) (case alt
((-1) green) ;; Dbb
((-1/2) green) ;; Db
((0) green) ;; D
((1/2) green) ;; D#
((1) green) ;; D##
(else black)))
((2) (case alt
((-1) blue) ;; Ebb
((-1/2) blue) ;; Eb
((0) blue) ;; E
((1/2) blue) ;; E#
((1) blue) ;; E##
(else black)))
((3) (case alt
((-1) red) ;; Fbb
((-1/2) red) ;; Fb
((0) red) ;; F
((1/2) red) ;; F#
((1) red) ;; F##
(else black)))
((4) (case alt
((-1) green) ;; Gbb
((-1/2) green) ;; Gb
((0) green) ;; G
((1/2) green) ;; G#
((1) green) ;; G##
(else black)))
((5) (case alt
((-1) blue) ;; Abb
((-1/2) blue) ;; Ab
((0) blue) ;; A
((1/2) blue) ;; A#
((1) blue) ;; A##
(else black)))
((6) (case alt
((-1) yellow) ;; Bbb
((-1/2) yellow) ;; Bb
((0) yellow) ;; B
((1/2) yellow) ;; B#
((1) yellow) ;; B##
(else black)))
(else black))))
;; just for dev work
;; (display dur-log) (newline)
;; (display nnm) (newline)
;; (display alt) (newline)
(set! stl
(cond
;; quarter notes and smaller
((> dur-log 1)
(grob-interpret-markup grob
#{ \markup {
\combine
\musicglyph #"noteheads.s2"
\translate-scaled #'(0.05 . 0)
\scale #'(1.03 . 0.98)
\rotate #'3
\magnify # 0.9 \with-color #clr
\musicglyph #"noteheads.s2"
} #}
))
;; half notes
((= dur-log 1)
(grob-interpret-markup grob
#{ \markup {
\combine
\translate-scaled #'(0.11 . -0.01)
\scale #'(1 . 0.82)
\rotate #'7
\magnify # 0.85
\musicglyph #"noteheads.s1"
\combine
\musicglyph #"noteheads.s1"
\translate-scaled #'(0.07 . 0)
\scale #'(1.02 . 0.98)
\rotate #'2
\magnify # 0.9 \with-color #clr
\musicglyph #"noteheads.s1"
} #}
))
;; whole notes
((< dur-log 1)
(grob-interpret-markup grob
#{ \markup {
\combine
\translate-scaled #'(0.2 . 0)
\magnify # 0.8
\musicglyph #"noteheads.s0"
\combine
\musicglyph #"noteheads.s0"
\translate-scaled #'(0.08 . 0)
\scale #'(1.03 . 1)
\magnify # 0.9 \with-color #clr
\musicglyph #"noteheads.s0"
} #}
))))
(set! (ly:grob-property grob 'stencil)
(ly:stencil-scale stl mult mult))))
music =
\relative f' {
c4 d e f g a b c d e f g a b c d
c,,2 d e f g a b c d e f g a b c d
c,,1 d e f g a b c d e f g a b c
}
\new Staff \with {
\override NoteHead.layer = #2
\override NoteHead.before-line-breaking = \coloredNoteHeads
}
{ \music }
--
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