Let the lines be printed by the new make-connected-line-procedure,
using ly:line-interface::line. The new stencil now reacts on
overrides for style and dash-period/fraction.
Not closing Hairpins created by elbowed-hairpin are possible now.
Single disadvantage: The point-list needs to have (0 . 0) first,
if a closing Hairpin is wished.
The previous used make-connected-path did that automatically and
thus was not flexible enough.
Give the final stencil proper extents.
Cleanup, more descriptive naming, extent docstring.
'(bound-details left padding)
(+ my-padding script-padding)))))))
'(bound-details left padding)
(+ my-padding script-padding)))))))
+(define-public (make-connected-line points grob)
+ "Takes a list of points, @var{points}.
+Returns a line connecting @var{points}, using @code{ly:line-interface::line},
+gets layout information from @var{grob}"
+ (define (connected-points grob ls pts)
+ (if (not (pair? (cdr pts)))
+ (reduce ly:stencil-add empty-stencil ls)
+ (connected-points
+ grob
+ (cons
+ (ly:line-interface::line
+ grob
+ (car (first pts))
+ (cdr (first pts))
+ (car (second pts))
+ (cdr (second pts)))
+ ls)
+ (cdr pts))))
+ (if (< (length points) 2)
+ (begin
+ (ly:warning
+ "´make-connected-line´ needs at least two points: ~a"
+ points)
+ empty-stencil)
+ (connected-points grob '() points)))
+
(define ((elbowed-hairpin coords mirrored?) grob)
"Create hairpin based on a list of @var{coords} in @code{(cons x y)}
form. @code{x} is the portion of the width consumed for a given line
and @code{y} is the portion of the height. For example,
(define ((elbowed-hairpin coords mirrored?) grob)
"Create hairpin based on a list of @var{coords} in @code{(cons x y)}
form. @code{x} is the portion of the width consumed for a given line
and @code{y} is the portion of the height. For example,
-@code{'((0.3 . 0.7) (0.8 . 0.9) (1.0 . 1.0))} means that at the point
+@code{'((0 . 0) (0.3 . 0.7) (0.8 . 0.9) (1.0 . 1.0))} means that at the point
where the hairpin has consumed 30% of its width, it must
be at 70% of its height. Once it is to 80% width, it
where the hairpin has consumed 30% of its width, it must
be at 70% of its height. Once it is to 80% width, it
-must be at 90% height. It finishes at
-100% width and 100% height. @var{mirrored?} indicates if the hairpin
-is mirrored over the Y-axis or if just the upper part is drawn.
+must be at 90% height. It finishes at 100% width and 100% height.
+If @var{coords} does not begin with @code{'(0 . 0)} the final hairpin may have
+an open tip. For example '(0 . 0.5) will cause an open end of 50% of the usual
+height.
+@var{mirrored?} indicates if the hairpin is mirrored over the Y-axis or if
+just the upper part is drawn.
Returns a function that accepts a hairpin grob as an argument
and draws the stencil based on its coordinates.
Returns a function that accepts a hairpin grob as an argument
and draws the stencil based on its coordinates.
@lilypond[verbatim,quote]
#(define simple-hairpin
@lilypond[verbatim,quote]
#(define simple-hairpin
- (elbowed-hairpin '((1.0 . 1.0)) #t))
+ (elbowed-hairpin '((0 . 0)(1.0 . 1.0)) #t))
\\relative c' {
\\override Hairpin #'stencil = #simple-hairpin
\\relative c' {
\\override Hairpin #'stencil = #simple-hairpin
- (define (pair-to-list pair)
- (list (car pair) (cdr pair)))
- (define (normalize-coords goods x y)
+ (define (scale-coords coords-list x y)
- (lambda (coord)
- (cons (* x (car coord)) (* y (cdr coord))))
- goods))
- (define (my-c-p-s points thick decresc?)
- (make-connected-path-stencil
- points
- thick
- (if decresc? -1.0 1.0)
- 1.0
- #f
- #f))
+ (lambda (coord) (cons (* x (car coord)) (* y (cdr coord))))
+ coords-list))
+
+ (define (hairpin::print-part points decresc? me)
+ (let ((stil (make-connected-line points me)))
+ (if decresc? (ly:stencil-scale stil -1 1) stil)))
+
;; outer let to trigger suicide
(let ((sten (ly:hairpin::print grob)))
(if (grob::is-live? grob)
(let* ((decresc? (eqv? (ly:grob-property grob 'grow-direction) LEFT))
;; outer let to trigger suicide
(let ((sten (ly:hairpin::print grob)))
(if (grob::is-live? grob)
(let* ((decresc? (eqv? (ly:grob-property grob 'grow-direction) LEFT))
- (thick (ly:grob-property grob 'thickness 0.1))
- (thick (* thick (layout-line-thickness grob)))
(xex (ly:stencil-extent sten X))
(lenx (interval-length xex))
(yex (ly:stencil-extent sten Y))
(leny (interval-length yex))
(xtrans (+ (car xex) (if decresc? lenx 0)))
(ytrans (car yex))
(xex (ly:stencil-extent sten X))
(lenx (interval-length xex))
(yex (ly:stencil-extent sten Y))
(leny (interval-length yex))
(xtrans (+ (car xex) (if decresc? lenx 0)))
(ytrans (car yex))
- (uplist (map pair-to-list
- (normalize-coords coords lenx (/ leny 2))))
- (downlist (map pair-to-list
- (normalize-coords coords lenx (/ leny -2)))))
- (ly:stencil-translate
- (ly:stencil-add
- (my-c-p-s uplist thick decresc?)
- (if mirrored? (my-c-p-s downlist thick decresc?) empty-stencil))
- (cons xtrans ytrans)))
+ (uplist (scale-coords coords lenx (/ leny 2)))
+ (downlist (scale-coords coords lenx (/ leny -2)))
+ (stil
+ (ly:stencil-aligned-to
+ (ly:stencil-translate
+ (ly:stencil-add
+ (hairpin::print-part uplist decresc? grob)
+ (if mirrored?
+ (hairpin::print-part downlist decresc? grob)
+ empty-stencil))
+ (cons xtrans ytrans))
+ Y CENTER))
+ (stil-y-extent (ly:stencil-extent stil Y)))
+ ;; Return a final stencil properly aligned in Y-axis direction and with
+ ;; proper extents. Otherwise stencil-operations like 'box-stencil' will
+ ;; return badly. Extent in X-axis direction is taken from the original,
+ ;; in Y-axis direction from the new stencil.
+ (ly:make-stencil (ly:stencil-expr stil) xex stil-y-extent))
+ ;; return empty, if no Hairpin.stencil present.
'())))
(export elbowed-hairpin)
(define-public flared-hairpin
'())))
(export elbowed-hairpin)
(define-public flared-hairpin
- (elbowed-hairpin '((0.95 . 0.4) (1.0 . 1.0)) #t))
+ (elbowed-hairpin '((0 . 0) (0.95 . 0.4) (1.0 . 1.0)) #t))
(define-public constante-hairpin
(define-public constante-hairpin
- (elbowed-hairpin '((1.0 . 0.0) (1.0 . 1.0)) #f))
+ (elbowed-hairpin '((0 . 0) (1.0 . 0.0) (1.0 . 1.0)) #f))
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;; lyrics
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;; lyrics