-;;;;
;;;; slur.scm -- Slur scheme stuff
;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
-;;;;
-
-(define (attached-to-stem slur dir)
- (let* ((note-columns (ly:get-grob-property slur 'note-columns))
- (col (if (= dir 1) (car note-columns) (car (reverse note-columns))))
- (stem (ly:get-grob-property col 'stem)))
- (and
- (eq? col (ly:get-spanner-bound slur dir))
- stem
- (ly:get-grob-property stem 'heads))))
-
-
-;; Slur-extremity-rules is a list of rules. Each rule is a pair
-;; (fuction . attachment), where function takes two arguments,
-;; the slur and the direction of the attachment.
-;;
-;; The rules are tried starting from the car of this list. If the
-;; function part (car) evaluates to #t, the corresponding
-;; attachment (cdr) is used for the slur's dir. Otherwise, the next
-;; rule is tried.
-;;
-;; Currently, we have attachments:
-;;
-;; 'head 'along-side-stem 'stem 'loose-end
-;;
-
-(define default-slur-extremity-rules
- (list
-
- ;; (cons (lambda (slur dir) (begin (display "before sanity check") (newline))#f) #f)
-
- ;; urg: don't crash on a slur without note-columns
- (cons (lambda (slur dir)
- (< (length (ly:get-grob-property slur 'note-columns)) 1)) 'head)
-
- ;; (cons (lambda (slur dir) (begin (display "before loose-end") (newline))#f) #f)
- (cons (lambda (slur dir) (not (attached-to-stem slur dir))) 'loose-end)
-
- ;; (cons (lambda (slur dir) (begin (display "before head") (newline))#f) #f)
-
- (cons (lambda (slur dir)
- ;; urg, code dup
- (let* ((note-columns (ly:get-grob-property slur 'note-columns))
- (col (car (if (= dir 1) note-columns (reverse note-columns))))
- (stem (ly:get-grob-property col 'stem)))
-
- (and stem
- (not (equal? (ly:get-grob-property slur 'direction)
- (ly:get-grob-property stem 'direction)))))) 'head)
-
- ;; (cons (lambda (slur dir) (begin (display "before stem") (newline))#f) #f)
-
- (cons (lambda (slur dir)
- ;; if attached-to-stem
- (and (attached-to-stem slur dir)
- ;; and got beam
- ;; urg, code dup
- (let* ((note-columns (ly:get-grob-property slur 'note-columns))
- (col (if (= dir 1) (car note-columns) (car (reverse note-columns))))
- (stem (ly:get-grob-property col 'stem)))
- (and stem
- (ly:get-grob-property stem 'beam)
- ;; and beam on same side as slur
- (let ((beaming (ly:get-grob-property stem 'beaming)))
- ;; (display "beaming (") (display dir) (display "): ") (write beaming) (newline)
- (if (pair? beaming)
- (>= (length (if (= dir -1) (cdr beaming) (car beaming)))
- 1)
- #f))))))
- 'stem)
-
- ;; (cons (lambda (slur dir) (begin (display "before loose-end") (newline))#f) #f)
- (cons (lambda (slur dir) (not (attached-to-stem slur dir))) 'loose-end)
- ;; (cons (lambda (slur dir) (begin (display "after loose-end") (newline))#f) #f)
-
- ;; default case, attach to head
- (cons (lambda (x y) #t) 'head)
- ))
-
-
-;; This list defines the offsets for each type of attachment.
-;; The format of each element is
-;; (attachment stem-dir*dir slur-dir*dir)
-;; Different attachments have different default points:
-;;
-;; head: Default position is centered in X, on outer side of head Y
-;; along-side-stem: Default position is on stem X, on outer side of head Y
-;; stem: Default position is on stem X, at stem end Y
-(define default-slur-extremity-offset-alist
- '(
- ((head 1 1) . (-0.25 . 0.75))
- ((head 1 -1) . (-0.25 . 0.75))
- ((head -1 1) . (-0.25 . 0.75))
- ((head -1 -1) . (-0.85 . 0.75))
-
- ((stem 1 1) . (-0.125 . 0.5))
- ((stem -1 -1) . (-0.125 . 0.5))
-
- ((loose-end 1 1) . (-0.4 . 0))
- ((loose-end 1 -1) . (-0.4 . 0))
- ((loose-end -1 -1) . (-4 . 0))
- ((loose-end -1 1) . (-4 . 0))
- ))
-
-;; This is a bit of a hack: slurs and phrasing slurs
-;; attaching at the same note must not collide.
-;; However, slurs (and phrasing slurs) should look
-;; at scripts and eachother.
-(define default-phrasing-slur-extremity-offset-alist
- '(
- ((head 1 1) . (-0.25 . 1.25))
- ((head 1 -1) . (-0.25 . 1.25))
- ((head -1 1) . (-0.25 . 1.25))
- ((head -1 -1) . (-0.85 . 1.25))
-
- ((stem 1 1) . (-0.25 . 1.5))
- ((stem -1 -1) . (-0.25 . 1.5))
-
- ((loose-end 1 1) . (-0.4 . 0))
- ((loose-end 1 -1) . (-0.4 . 0))
- ((loose-end -1 -1) . (-4 . 0))
- ((loose-end -1 1) . (-4 . 0))
+;;;; (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ ;
+; this is put into the slur-details property of Slur and PhrasingSlur
+(define default-slur-details
+ '((region-size . 4)
+ (head-encompass-penalty . 1000.0)
+ (stem-encompass-penalty . 30.0)
+ (closeness-factor . 10)
+ (edge-attraction-factor . 4)
+ (same-slope-penalty . 20)
+ (steeper-slope-factor . 50)
+ (non-horizontal-penalty . 15)
+ (max-slope . 1.1)
+ (max-slope-factor . 10)
+ (free-head-distance . 0.3)
+ (free-slur-distance . 0.8)
+ (extra-object-collision . 50)
+ (accidental-collision . 3)
+ (extra-encompass-free-distance . 0.3)
+ (head-slur-distance-max-ratio . 3)
+ (head-slur-distance-factor . 10)
+ (absolute-closeness-measure . 0.3)
+ (edge-slope-exponent . 1.7)
))
-
-
projects / lilypond.git / blobdiff