;; jazz-part 2
;;
;; after Klaus Ignatzek, Die Jazzmethode fuer Klavier 1.
-;;
+;;
;; The idea is: split chords into
-;;
+;;
;; ROOT PREFIXES MAIN-NAME ALTERATIONS SUFFIXES ADDITIONS
;;
;; and put that through a layout routine.
-;;
-;; the split is a procedural process, with lots of set!.
+;;
+;; the split is a procedural process, with lots of set!.
;;
(if (null? ps)
#f
(if (= (- x 1) (ly:pitch-steps (car ps)))
- (car ps)
+ (car ps)
(get-step x (cdr ps)))))
(define (replace-step p ps)
(if (< (ly:pitch-steps (car ps)) (- x 1))
(remove-uptil-step x (cdr ps))
ps)))
-
+
(define name-root (ly:context-property context 'chordRootNamer))
- (define name-note
+ (define name-note
(let ((nn (ly:context-property context 'chordNoteNamer)))
(if (eq? nn '())
;; replacing the next line with name-root gives guile-error...? -rz
;; apparently sequence of defines is equivalent to let, not let* ? -hwn
- (ly:context-property context 'chordRootNamer)
+ (ly:context-property context 'chordRootNamer)
;; name-root
nn)))
(define (is-natural-alteration? p)
(= (natural-chord-alteration p) (ly:pitch-alteration p)))
-
+
(define (ignatzek-format-chord-name
root
prefix-modifiers
"Format for the given (lists of) pitches. This is actually more
work than classifying the pitches."
-
+
(define (filter-main-name p)
"The main name: don't print anything for natural 5 or 3."
(if
(list (name-step p))))
(define (glue-word-to-step word x)
- (make-line-markup
+ (make-line-markup
(list
(make-simple-markup word)
(name-step x))))
-
+
(define (suffix-modifier->markup mod)
(if (or (= 4 (pitch-step mod))
(= 2 (pitch-step mod)))
(glue-word-to-step "sus" mod)
(glue-word-to-step "huh" mod)))
-
+
(define (prefix-modifier->markup mod)
(if (and (= 3 (pitch-step mod))
(= FLAT (ly:pitch-alteration mod)))
(make-simple-markup (if lowercase-root? "" "m"))
(make-simple-markup "huh")))
-
+
(define (filter-alterations alters)
"Filter out uninteresting (natural) pitches from ALTERS."
-
+
(define (altered? p)
(not (is-natural-alteration? p)))
-
+
(if
(null? alters)
'()
(list (ly:context-property context 'majorSevenSymbol))
args)
(cons (accidental->markup (step-alteration pitch)) args))))
-
+
(make-line-markup total)))
(let* ((sep (ly:context-property context 'chordNameSeparator))
suffixes
add-markups) sep))
(base-stuff (if (ly:pitch? bass-pitch)
- (list sep (name-note bass-pitch))
+ (list sep (name-note bass-pitch #f))
'())))
(set! base-stuff
`(
,(name-root root lowercase-root?)
,exception-markup
- .
+ .
,(if (ly:pitch? bass-pitch)
(list (ly:context-property context 'chordNameSeparator)
(name-note bass-pitch #f))
inversion
bass))
(alterations '()))
-
+
(if exception
(ignatzek-format-exception root exception bass-note lowercase-root?)
-
+
(begin
;; no exception.
;; handle sus4 and sus2 suffix: if there is a 3 together with
(if (and (get-step 3 pitches)
(= (ly:pitch-alteration (get-step 3 pitches)) FLAT))
(set! prefixes (cons (get-step 3 pitches) prefixes)))
-
+
;; lazy bum. Should write loop.
(cond
((get-step 7 pitches) (set! main-name (get-step 7 pitches)))