This is the cleaned up function - I hope Thunderbird does a better job
then Outlook.
\version "2.19.15"
%
-------------------------------------------------------------------------------------------------
%
% P Gentry (peter.gen...@sunscales.co.uk) 29 May 2015
%
%Function to color any notes outside the nominal range of the instrument
%
%The nominal ranges are particualr performers ranges rather than actual
instrument range
%
% include function file
C:/Users/Peter/LilyPool/Includes/ranges/instrument_ranges.ly'
% usuage include --> \include "./ranges/instrument_ranges.ly"
% usuage call --> \naturalizeInstrumentRange "instrument" music
%
% Note the ranges refer to music transposed for each instrument not the
true pitches.
% use % for comment outside scheme function - use ; inside scheme functions
%
-------------------------------------------------------------------------------------------------
#(define (naturalize-instrument-range p instrument )
(let ((o (ly:pitch-octave p))
(a (* 4 (ly:pitch-alteration p)))
;; alteration, a, in quarter tone steps, for historical reasons
(n (ly:pitch-notename p)))
;; clarinet range e, to f' -1 2 0 to 1 3 0
(cond
((equal? instrument "clarinet" )
(if (<= o -1) (begin (set! o -1 )))
(if (>= o 3) (begin (set! o 2 )))
(cond
( (and (= o -1) (<= a 2) (<= n 1)) (set! o 0))
( (and (= o 2) (> n 3)) (set! o 1))
( (and (= o 2) (<= n 3)) (set! o 2)) )
(if (> o 2) (begin (set! o 2 ))))
;; bass clarinet eb range eb, to f' -1 1 2 (-1 2 -2) to 1 3 0
((equal? instrument "bass clarinet eb" )
(if (<= o -1) (begin (set! o -1 )))
(if (>= o 3) (begin (set! o 2 )))
(cond
( (and (= o -1) (<= a 2) (<= n 1)) (set! o 0))
( (and (= o 2) (> n 3)) (set! o 1))
( (and (= o 2) (<= n 3)) (set! o 2)) )
(if (> o 2) (begin (set! o 2 ))))
;; bass clarinet c range c, to f' -1 0 0 to 1 3 0
((equal? instrument "bass clarinet c" )
(if (<= o -1) (begin (set! o -1 )))
(if (>= o 3) (begin (set! o 2 )))
(cond
( (and (= o -1) (< a 0) (<= n 0)) (set! o 0))
( (and (= o 2) (> n 3)) (set! o 1))
( (and (= o 2) (<= n 3)) (set! o 2)) )
(if (> o 2) (begin (set! o 2 ))))
;; flute range c to f' 1 0 0 to 1 3 0
((equal? instrument "flute")
(if (< o 0) (begin (set! o 0 )))
(cond
( (and (= o 0) (< a 0) (= n 0)) (set! o 1))
( (and (= o 2) (> n 3)) (set! o 1))
( (and (= o 2) (<= n 3)) (set! o 2)) )
(if (> o 2) (begin (set! o 2 ))))
;; alto range c to f' 1 0 0 to 1 3 0
((equal? instrument "alto")
(if (< o 0) (begin (set! o 0 )))
(cond
( (and (= o 0) (< a 0) (= n 0)) (set! o 1))
( (and (= o 2) (> n 3)) (set! o 1))
( (and (= o 2) (<= n 3)) (set! o 2)) )
(if (> o 2) (begin (set! o 2 )))) )
(ly:make-pitch o n (/ a 4))
))
%
-------------------------------------------------------------------------------------------------
% a variable for the notehaed color on pitch change
%
-------------------------------------------------------------------------------------------------
my-color = #(x11-color 'red)
%
-------------------------------------------------------------------------------------------------
% this function rebuilds the music object optionally changing pitch and
notehead color
%
-------------------------------------------------------------------------------------------------
#(define (instrumentrange music instrument )
( ly:music? string? )
; extract the various portions of the music object
(let ((es (ly:music-property music 'elements))
(e (ly:music-property music 'element))
(p (ly:music-property music 'pitch)))
; rebuild any 'elements unchanged
(if (pair? es)
(ly:music-set-property! music 'elements
(map (lambda (x) (instrumentrange x instrument)) es)))
; rebuild any 'element unchanged
(if (ly:music? e) (ly:music-set-property! music 'element
(instrumentrange e instrument )))
;rebuild the pitch and if a changed pitch add the color tweak
(if (ly:pitch? p)
(let ((new-pitch (naturalize-instrument-range p instrument)))
(ly:music-set-property! music 'pitch new-pitch)
(if (and (not (equal? p new-pitch)) (color? my-color))
(ly:music-set-property! music 'tweaks
(acons
'color my-color
(ly:music-property music 'tweaks))))))
music))
%
------------------------------------------------------------------------------------------------------------------------------------
% the Lily file calling function \naturalizeInstrumentRange "instrument
string" followed by a sequential music object
%
------------------------------------------------------------------------------------------------------------------------------------
naturalizeInstrumentRange =
#(define-music-function (parser location instrument m )
( string? ly:music? )
(instrumentrange m instrument ))
\score {
\naturalizeInstrumentRange "bass clarinet eb"
\new Staff \relative c' {
c,8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b
bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
}
}
\score {
\new Staff \relative c' {
c,8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b
bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
c8 cis des d dis ees e eis fes f fis ges g gis aes a ais bes b bis ces
}
}
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