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- ; The GIMP -- an image manipulation program
- ; Copyright (C) 1995 Spencer Kimball and Peter Mattis
- ;
- ; Beveled pattern arrow for web pages
- ; Copyright (C) 1997 Federico Mena Quintero
- ; federico@nuclecu.unam.mx
- ;
- ; This program is free software; you can redistribute it and/or modify
- ; it under the terms of the GNU General Public License as published by
- ; the Free Software Foundation; either version 2 of the License, or
- ; (at your option) any later version.
- ;
- ; This program is distributed in the hope that it will be useful,
- ; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ; GNU General Public License for more details.
- ;
- ; You should have received a copy of the GNU General Public License
- ; along with this program; if not, write to the Free Software
- ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
- (define (map proc seq)
- (if (null? seq)
- '()
- (cons (proc (car seq))
- (map proc (cdr seq)))))
-
- (define (for-each proc seq)
- (if (not (null? seq))
- (begin
- (proc (car seq))
- (for-each proc (cdr seq)))))
-
- (define (make-point x y)
- (cons x y))
-
- (define (point-x p)
- (car p))
-
- (define (point-y p)
- (cdr p))
-
- (define (point-list->double-array point-list)
- (let* ((how-many (length point-list))
- (a (cons-array (* 2 how-many) 'double))
- (count 0))
- (for-each (lambda (p)
- (aset a (* count 2) (point-x p))
- (aset a (+ 1 (* count 2)) (point-y p))
- (set! count (+ count 1)))
- point-list)
- a))
-
- (define (rotate-points points size orientation)
- (map (lambda (p)
- (let ((px (point-x p))
- (py (point-y p)))
- (cond ((eq? orientation 'right) (make-point px py))
- ((eq? orientation 'left) (make-point (- size px) py))
- ((eq? orientation 'up) (make-point py (- size px)))
- ((eq? orientation 'down) (make-point py px)))))
- points))
-
- (define (make-arrow size offset)
- (list (make-point offset offset)
- (make-point (- size offset) (/ size 2))
- (make-point offset (- size offset))))
-
- (define (script-fu-beveled-pattern-arrow size orientation pattern)
- (let* ((old-bg-color (car (gimp-palette-get-background)))
- (img (car (gimp-image-new size size RGB)))
- (background (car (gimp-layer-new img size size RGB_IMAGE "Arrow" 100 NORMAL)))
- (bumpmap (car (gimp-layer-new img size size RGB_IMAGE "Bumpmap" 100 NORMAL)))
- (big-arrow (point-list->double-array (rotate-points (make-arrow size 6) size orientation)))
- (med-arrow (point-list->double-array (rotate-points (make-arrow size 7) size orientation)))
- (small-arrow (point-list->double-array (rotate-points (make-arrow size 8) size orientation))))
-
- (gimp-image-disable-undo img)
- (gimp-image-add-layer img background -1)
- (gimp-image-add-layer img bumpmap -1)
-
- ; Create pattern layer
-
- (gimp-palette-set-background '(0 0 0))
- (gimp-edit-fill img background)
- (gimp-patterns-set-pattern pattern)
- (gimp-bucket-fill img background PATTERN-BUCKET-FILL NORMAL 100 0 FALSE 0 0)
-
- ; Create bumpmap layer
-
- (gimp-edit-fill img bumpmap)
-
- (gimp-palette-set-background '(127 127 127))
- (gimp-rect-select img 1 1 (- size 2) (- size 2) REPLACE FALSE 0)
- (gimp-edit-fill img bumpmap)
-
- (gimp-palette-set-background '(255 255 255))
- (gimp-rect-select img 2 2 (- size 4) (- size 4) REPLACE FALSE 0)
- (gimp-edit-fill img bumpmap)
-
- (gimp-palette-set-background '(127 127 127))
- (gimp-free-select img 6 big-arrow REPLACE TRUE FALSE 0)
- (gimp-edit-fill img bumpmap)
-
- (gimp-palette-set-background '(0 0 0))
- (gimp-free-select img 6 med-arrow REPLACE TRUE FALSE 0)
- (gimp-edit-fill img bumpmap)
-
- (gimp-selection-none img)
-
- ; Bumpmap
-
- (plug-in-bump-map 1 img background bumpmap 135 45 2 0 0 0 0 TRUE FALSE 0)
-
- ; Darken arrow
-
- (gimp-palette-set-background '(255 255 255))
- (gimp-edit-fill img bumpmap)
-
- (gimp-palette-set-background '(192 192 192))
- (gimp-free-select img 6 small-arrow REPLACE TRUE FALSE 0)
- (gimp-edit-fill img bumpmap)
-
- (gimp-selection-none img)
-
- (gimp-layer-set-mode bumpmap MULTIPLY)
-
- (gimp-image-flatten img)
-
- (gimp-palette-set-background old-bg-color)
- (gimp-image-enable-undo img)
- (gimp-display-new img)))
-
-
- (script-fu-register "script-fu-beveled-pattern-arrow"
- "<Toolbox>/Xtns/Script-Fu/Web page themes/Beveled pattern/Arrow"
- "Beveled pattern arrow"
- "Federico Mena Quintero"
- "Federico Mena Quintero"
- "July 1997"
- ""
- SF-VALUE "Size" "32"
- SF-VALUE "Orientation" "'right"
- SF-VALUE "Pattern" "\"Wood\"")
-