-(define (sign x)
- (if (= x 0)
- 1
- (if (< x 0) -1 1)))
-
-;;;; AsciiScript as
-(define (as-scm action-name)
-
- (define (beam width slope thick)
- (string-append
- (func "set-line-char" "#")
- (func "rline-to" width (* width slope))
- ))
-
- ; simple flat slurs
- (define (bezier-sandwich l thick)
- (let (
- (c0 (cadddr l))
- (c1 (cadr l))
- (c3 (caddr l)))
- (let* ((x (car c0))
- (dx (- (car c3) x))
- (dy (- (cdr c3) (cdr c0)))
- (rc (/ dy dx))
- (c1-dx (- (car c1) x))
- (c1-line-y (+ (cdr c0) (* c1-dx rc)))
- (dir (if (< c1-line-y (cdr c1)) 1 -1))
- (y (+ -1 (* dir (max (* dir (cdr c0)) (* dir (cdr c3)))))))
- (string-append
- (func "rmove-to" x y)
- (func "put" (if (< 0 dir) "/" "\\\\"))
- (func "rmove-to" 1 (if (< 0 dir) 1 0))
- (func "set-line-char" "_")
- (func "h-line" (- dx 1))
- (func "rmove-to" (- dx 1) (if (< 0 dir) -1 0))
- (func "put" (if (< 0 dir) "\\\\" "/"))))))
-
- (define (bracket arch_angle arch_width arch_height width height arch_thick thick)
- (string-append
- (func "rmove-to" (+ width 1) (- (/ height -2) 1))
- (func "put" "\\\\")
- (func "set-line-char" "|")
- (func "rmove-to" 0 1)
- (func "v-line" (+ height 1))
- (func "rmove-to" 0 (+ height 1))
- (func "put" "/")
- ))
-
- (define (char i)
- (func "char" i))
-
- (define (define-origin a b c ) "")
-
- (define (end-output)
- (func "end-output"))
-
- (define (experimental-on)
- "")
-
- (define (filledbox breapth width depth height)
- (let ((dx (+ width breapth))
- (dy (+ depth height)))
- (string-append
- (func "rmove-to" (* -1 breapth) (* -1 depth))
- (if (< dx dy)
- (string-append
- (func "set-line-char"
- (if (<= dx 1) "|" "#"))
- (func "v-line" dy))
- (string-append
- (func "set-line-char"
- (if (<= dy 1) "-" "="))
- (func "h-line" dx))))))
-
- (define (font-load-command name-mag command)
- (func "load-font" (car name-mag) (magstep (cdr name-mag))))
-
- (define (header creator generate)
- (func "header" creator generate))
-
- (define (header-end)
- (func "header-end"))
-
- ;; urg: this is good for half of as2text's execution time
- (define (xlily-def key val)
- (string-append "(define " key " " (arg->string val) ")\n"))
-
- (define (lily-def key val)
- (if
- (or (equal? key "mudelapaperlinewidth")
- (equal? key "mudelapaperstaffheight"))
- (string-append "(define " key " " (arg->string val) ")\n")
- ""))
-
- (define (no-origin) "")
-
- (define (placebox x y s)
- (let ((ey (inexact->exact y)))
- (string-append "(move-to " (number->string (inexact->exact x)) " "
- (if (= 0.5 (- (abs y) (abs ey)))
- (number->string y)
- (number->string ey))
- ")\n" s)))
-
- (define (select-font font-name-symbol)
- (let* ((c (assoc font-name-symbol font-name-alist)))
- (if (eq? c #f)
- (begin
- (ly-warn
- (string-append
- "Programming error: No such font known "
- (car font-name-symbol)))
- "") ; issue no command
- (func "select-font" (car font-name-symbol)))))
-
- (define (start-line height)
- (func "start-line" height))
-
- (define (stop-line)
- (func "stop-line"))
-
- (define (text s)
- (func "text" s))
-
- (define (tuplet ht gap dx dy thick dir) "")
-
- (define (volta h w thick vert-start vert-end)
- ;; urg
- (string-append
- (func "set-line-char" "|")
- (func "rmove-to" 0 -4)
- ;; definition strange-way around
- (if (= 0 vert-start)
- (func "v-line" h)
- "")
- (func "rmove-to" 1 h)
- (func "set-line-char" "_")
- (func "h-line" (- w 1))
- (func "set-line-char" "|")
- (if (= 0 vert-end)
- (string-append
- (func "rmove-to" (- w 1) (* -1 h))
- (func "v-line" (* -1 h)))
- "")))
-
- (cond ((eq? action-name 'all-definitions)
- `(begin
- (define beam ,beam)
- (define bracket ,bracket)
- (define char ,char)
- (define define-origin ,define-origin)
- ;;(define crescendo ,crescendo)
- (define bezier-sandwich ,bezier-sandwich)
- ;;(define dashed-slur ,dashed-slur)
- ;;(define decrescendo ,decrescendo)
- (define end-output ,end-output)
- (define experimental-on ,experimental-on)
- (define filledbox ,filledbox)
- ;;(define font-def ,font-def)
- (define font-load-command ,font-load-command)
- ;;(define font-switch ,font-switch)
- (define header ,header)
- (define header-end ,header-end)
- (define lily-def ,lily-def)
- ;;(define invoke-char ,invoke-char)
- ;;(define invoke-dim1 ,invoke-dim1)
- (define no-origin ,no-origin)
- (define placebox ,placebox)
- (define select-font ,select-font)
- (define start-line ,start-line)
- ;;(define stem ,stem)
- (define stop-line ,stop-line)
- (define stop-last-line ,stop-line)
- (define text ,text)
- (define tuplet ,tuplet)
- (define volta ,volta)
- ))
- ((eq? action-name 'tuplet) tuplet)
- ;;((eq? action-name 'beam) beam)
- ;;((eq? action-name 'bezier-sandwich) bezier-sandwich)
- ;;((eq? action-name 'bracket) bracket)
- ((eq? action-name 'char) char)
- ;;((eq? action-name 'crescendo) crescendo)
- ;;((eq? action-name 'dashed-slur) dashed-slur)
- ;;((eq? action-name 'decrescendo) decrescendo)
- ;;((eq? action-name 'experimental-on) experimental-on)
- ((eq? action-name 'filledbox) filledbox)
- ((eq? action-name 'select-font) select-font)
- ;;((eq? action-name 'volta) volta)
- (else (error "unknown tag -- MUSA-SCM " action-name))
- )
- )
-
-
-(define (gulp-file name)
- (let* ((port (open-file name "r"))
- (content (let loop ((text ""))
- (let ((line (read-line port)))
- (if (or (eof-object? line)
- (not line))
- text
- (loop (string-append text line "\n")))))))
- (close port)
- content))
-
-;; urg: Use when standalone, do:
-;; (define ly-gulp-file scm-gulp-file)
-(define (scm-gulp-file name)
- (set! %load-path
- (cons (string-append (getenv 'LILYPONDPREFIX) "/ly")
- (cons (string-append (getenv 'LILYPONDPREFIX) "/ps")
- %load-path)))
- (let ((path (%search-load-path name)))
- (if path
- (gulp-file path)
- (gulp-file name))))
-
-(define (scm-tex-output)
- (ly-eval (tex-scm 'all-definitions)))
-
-(define (scm-ps-output)
- (ly-eval (ps-scm 'all-definitions)))
-
-(define (scm-as-output)
- (ly-eval (as-scm 'all-definitions)))
-
-(define (index-cell cell dir)
- (if (equal? dir 1)
- (cdr cell)
- (car cell)))
-
-(define major-scale
- '(
- (0 . 0)
- (1 . 0)
- (2 . 0)
- (3 . 0)
- (4 . 0)
- (5 . 0)
- (6 . 0)
- )
- )