-;;;; stenicil.scm --
+;;;; stencil.scm --
;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2003--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; (c) 2003--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
(define-public (stack-stencils axis dir padding stils)
"Stack stencils STILS in direction AXIS, DIR, using PADDING."
- (if (null? stils)
- '()
- (if (pair? stils)
- (ly:stencil-combine-at-edge
- (car stils) axis dir (stack-stencils axis dir padding (cdr stils))
- padding))))
+ (cond
+ ((null? stils) empty-stencil)
+ ((null? (cdr stils)) (car stils))
+ (else (ly:stencil-combine-at-edge
+ (car stils) axis dir (stack-stencils axis dir padding (cdr stils))
+ padding))))
+
+(define-public (stack-stencils-padding-list axis dir padding stils)
+ "Stack stencils STILS in direction AXIS, DIR, using a list of PADDING."
+ (cond
+ ((null? stils) empty-stencil)
+ ((null? (cdr stils)) (car stils))
+ (else (ly:stencil-combine-at-edge
+ (car stils) axis dir (stack-stencils-padding-list axis dir (cdr padding) (cdr stils))
+ (car padding)))))
+
+(define-public (centered-stencil stencil)
+ "Center stencil @var{stencil} in both the X and Y directions"
+ (ly:stencil-aligned-to (ly:stencil-aligned-to stencil X CENTER) Y CENTER))
(define-public (stack-lines dir padding baseline stils)
"Stack vertically with a baseline-skip."
(if (null? stils)
- '()
+ empty-stencil
(if (null? (cdr stils))
(car stils)
(ly:stencil-combine-at-edge
"Make a filled box."
(ly:make-stencil
- (list 'filledbox (- (car xext)) (cdr xext)
- (- (car yext)) (cdr yext))
+ (list 'round-filled-box (- (car xext)) (cdr xext)
+ (- (car yext)) (cdr yext) 0.0)
xext yext))
+(define-public (make-circle-stencil radius thickness fill)
+ "Make a circle of radius @var{radius} and thickness @var{thickness}"
+ (ly:make-stencil
+ (list 'circle radius thickness fill)
+ (cons (- radius) radius)
+ (cons (- radius) radius)))
(define-public (box-grob-stencil grob)
"Make a box of exactly the extents of the grob. The box precisely
(let* ((xext (ly:grob-extent grob grob 0))
(yext (ly:grob-extent grob grob 1))
(thick 0.1))
-
+
(ly:stencil-add
(make-filled-box-stencil xext (cons (- (car yext) thick) (car yext)))
- (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
+ (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
(make-filled-box-stencil (cons (cdr xext) (+ (cdr xext) thick)) yext)
(make-filled-box-stencil (cons (- (car xext) thick) (car xext)) yext))))
;; TODO merge this and prev function.
-(define-public (box-stencil stil thick padding)
- "Add a box around STIL, producing a new stencil."
- (let* ((x-ext (interval-widen (ly:stencil-extent stil 0) padding))
- (y-ext (interval-widen (ly:stencil-extent stil 1) padding))
- (y-rule (make-filled-box-stencil (cons 0 thick) y-ext))
- (x-rule (make-filled-box-stencil (interval-widen x-ext thick)
- (cons 0 thick))))
-
- (set! stil (ly:stencil-combine-at-edge stil X 1 y-rule padding))
- (set! stil (ly:stencil-combine-at-edge stil X -1 y-rule padding))
- (set! stil (ly:stencil-combine-at-edge stil Y 1 x-rule 0.0))
- (set! stil (ly:stencil-combine-at-edge stil Y -1 x-rule 0.0))
-
- stil))
+(define-public (box-stencil stencil thickness padding)
+ "Add a box around STENCIL, producing a new stencil."
+ (let* ((x-ext (interval-widen (ly:stencil-extent stencil 0) padding))
+ (y-ext (interval-widen (ly:stencil-extent stencil 1) padding))
+ (y-rule (make-filled-box-stencil (cons 0 thickness) y-ext))
+ (x-rule (make-filled-box-stencil
+ (interval-widen x-ext thickness) (cons 0 thickness))))
+ (set! stencil (ly:stencil-combine-at-edge stencil X 1 y-rule padding))
+ (set! stencil (ly:stencil-combine-at-edge stencil X -1 y-rule padding))
+ (set! stencil (ly:stencil-combine-at-edge stencil Y 1 x-rule 0.0))
+ (set! stencil (ly:stencil-combine-at-edge stencil Y -1 x-rule 0.0))
+ stencil))
+
+(define-public (circle-stencil stencil thickness padding)
+ "Add a circle around STENCIL, producing a new stencil."
+ (let* ((x-ext (ly:stencil-extent stencil 0))
+ (y-ext (ly:stencil-extent stencil 1))
+ (diameter (max (- (cdr x-ext) (car x-ext))
+ (- (cdr y-ext) (car y-ext))))
+ (radius (+ (/ diameter 2) padding thickness)))
+ (ly:stencil-add
+ (centered-stencil stencil) (make-circle-stencil radius thickness #f))))
(define-public (fontify-text font-metric text)
"Set TEXT with font FONT-METRIC, returning a stencil."
- (let* ((b (ly:text-dimension font-metric text)))
+ (let* ((b (ly:text-dimension font-metric text)))
(ly:make-stencil
`(text ,font-metric ,text) (car b) (cdr b))))
+
+(define-public (fontify-text-white scale font-metric text)
+ "Set TEXT with scale factor s"
+ (let* ((b (ly:text-dimension font-metric text))
+ ;;urg -- workaround for using ps font
+ (c `(white-text ,(* 2 scale) ,text)))
+ ;;urg -- extent is not from ps font, but we hope it's close
+ (ly:make-stencil c (car b) (cdr b))))
+
+(define-public (dimension-arrows destination)
+ "Draw twosided arrow from here to @var{destination}"
+
+ (let*
+ ((e_x 1+0i)
+ (e_y 0+1i)
+ (rotate (lambda (z ang)
+ (* (make-polar 1 ang)
+ z)))
+ (complex-to-offset (lambda (z)
+ (list (real-part z) (imag-part z))))
+
+ (z-dest (+ (* e_x (car destination)) (* e_y (cdr destination))))
+ (e_z (/ z-dest (magnitude z-dest)))
+ (triangle-points '(-1+0.25i
+ 0
+ -1-0.25i))
+ (p1s (map (lambda (z)
+ (+ z-dest (rotate z (angle z-dest))))
+ triangle-points))
+ (p2s (map (lambda (z)
+ (rotate z (angle (- z-dest))))
+ triangle-points))
+ (null (cons 0 0))
+ (arrow-1
+ (ly:make-stencil
+ `(polygon (quote ,(concatenate (map complex-to-offset p1s)))
+ 0.0
+ #t) null null))
+ (arrow-2
+ (ly:make-stencil
+ `(polygon (quote ,(concatenate (map complex-to-offset p2s)))
+ 0.0
+ #t) null null ) )
+ (thickness 0.1)
+ (shorten-line 0.5)
+ (start (complex-to-offset (/ (* e_z shorten-line) 2)))
+ (end (complex-to-offset (- z-dest (/ (* e_z shorten-line) 2))))
+
+ (line (ly:make-stencil
+ `(draw-line ,thickness
+ ,(car start) ,(cadr start)
+ ,(car end) ,(cadr end)
+ )
+ (cons (min 0 (car destination))
+ (min 0 (cdr destination)))
+ (cons (max 0 (car destination))
+ (max 0 (cdr destination)))))
+
+ (result (ly:stencil-add arrow-2 arrow-1 line)))
+
+ result))
projects / lilypond.git / blobdiff