;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; Copyright (C) 2004--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; Copyright (C) 2004--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
;; for define-safe-public when byte-compiling using Guile V2
-(use-modules (scm safe-utility-defs))
+(use-modules (scm safe-utility-defs) (ice-9 receive))
(define-public (construct-chord-elements root duration modifications)
"Build a chord on root using modifiers in @var{modifications}.
(else (interpret-removals chord mods))))
(define (pitch-octavated-strictly-below p root)
- "return P, but octavated, so it is below ROOT"
+ "return P, but octavated, so it is below ROOT"
(ly:make-pitch (+ (ly:pitch-octave root)
(if (> (ly:pitch-notename root)
(ly:pitch-notename p))
(define (make-chord-elements pitches bass duration inversion original-inv-pitch)
"Make EventChord with notes corresponding to PITCHES, BASS and
-DURATION, and INVERSION."
- (define (make-note-ev pitch)
- (make-music 'NoteEvent
- 'duration duration
- 'pitch pitch))
- (let ((nots (map make-note-ev pitches))
- (bass-note (if bass (make-note-ev bass) #f))
- (inv-note (if inversion (make-note-ev inversion) #f)))
- (if bass-note
- (begin
- (set! (ly:music-property bass-note 'bass) #t)
- (set! nots (cons bass-note nots))))
- (if inv-note
- (begin
- (set! (ly:music-property inv-note 'inversion) #t)
- (set! (ly:music-property inv-note 'octavation)
- (- (ly:pitch-octave inversion)
- (ly:pitch-octave original-inv-pitch)))
- (set! nots (cons inv-note nots))))
- nots))
+DURATION, and INVERSION. Notes above INVERSION are transposed downward
+along with the inversion as long as they end up below at least one
+non-inverted note."
+ (define (make-note-ev pitch . rest)
+ (apply make-music 'NoteEvent
+ 'duration duration
+ 'pitch pitch
+ rest))
+ (cond (inversion
+ (let* ((octavation (- (ly:pitch-octave inversion)
+ (ly:pitch-octave original-inv-pitch)))
+ (down (ly:make-pitch octavation 0 0)))
+ (define (invert p) (ly:pitch-transpose down p))
+ (define (make-inverted p . rest)
+ (apply make-note-ev (invert p) 'octavation octavation rest))
+ (receive (uninverted high)
+ (span (lambda (p) (ly:pitch<? p original-inv-pitch))
+ pitches)
+ (receive (invertible rest)
+ (if (null? uninverted)
+ ;; The following line caters for
+ ;; inversions "on the root", turning
+ ;; f/f into <f a' c''> rather than <f a c'>
+ ;; or <f' a' c''>
+ (values '() high)
+ (span (lambda (p)
+ (ly:pitch<? (invert p) (car uninverted)))
+ high))
+ (cons (make-inverted original-inv-pitch 'inversion #t)
+ (append (if bass (list (make-note-ev bass 'bass #t)) '())
+ (map make-inverted invertible)
+ (map make-note-ev uninverted)
+ (map make-note-ev rest)))))))
+ (bass (cons (make-note-ev bass 'bass #t)
+ (map make-note-ev pitches)))
+ (else (map make-note-ev pitches))))
;;;;;;;;;;;;;;;;
- ; chord modifiers change the pitch list.
+;; chord modifiers change the pitch list.
(define (aug-modifier pitches)
(set! pitches (replace-step (ly:make-pitch 0 4 SHARP) pitches))