mirror of https://github.com/GNOME/gimp.git
plug-ins/script-fu/scripts/alien-glow-arrow.scm Make helper functions
2004-03-23 Simon Budig <simon@gimp.org> * plug-ins/script-fu/scripts/alien-glow-arrow.scm * plug-ins/script-fu/scripts/beveled-pattern-arrow.scm: Make helper functions local to the scripts. The better fix for bug #136868. Should also be done for a lot of other scripts, but is too likely to introduce new bugs to do this now.
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Simon Budig
Simon Budig
parent
eb7cce40e3
commit
eed77aa635
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@ -1,3 +1,11 @@
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2004-03-23 Simon Budig <simon@gimp.org>
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* plug-ins/script-fu/scripts/alien-glow-arrow.scm
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* plug-ins/script-fu/scripts/beveled-pattern-arrow.scm: Make
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helper functions local to the scripts. The better fix for
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bug #136868. Should also be done for a lot of other scripts,
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but is too likely to introduce new bugs to do this now.
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2004-03-23 Sven Neumann <sven@gimp.org>
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* INSTALL
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@ -24,51 +24,68 @@
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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(define (make-point x y)
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(cons x y))
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(define (point-x p)
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(car p))
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(define (point-y p)
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(cdr p))
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(define (point-list->double-array point-list)
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(define (convert points array pos)
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(if (not (null? points))
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(begin
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(aset array (* 2 pos) (point-x (car points)))
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(aset array (+ 1 (* 2 pos)) (point-y (car points)))
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(convert (cdr points) array (+ pos 1)))))
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(let* ((how-many (length point-list))
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(a (cons-array (* 2 how-many) 'double)))
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(convert point-list a 0)
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a))
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(define (make-arrow size
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offset)
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(list (make-point offset offset)
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(make-point (- size offset) (/ size 2))
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(make-point offset (- size offset))))
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(define (rotate-points points size orientation)
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(map (lambda (p)
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(let ((px (point-x p))
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(py (point-y p)))
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(cond ((= orientation 0) (make-point px py)) ; right
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((= orientation 1) (make-point (- size px) py)) ; left
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((= orientation 2) (make-point py (- size px))) ; up
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((= orientation 3) (make-point py px))))) ; down
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points))
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(define (script-fu-alien-glow-right-arrow size
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orientation
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glow-color
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bg-color
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flatten)
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; some local helper functions, better to not define globally,
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; since otherwise the definitions could be clobbered by other scripts.
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(define (map proc seq)
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(if (null? seq)
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'()
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(cons (proc (car seq))
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(map proc (cdr seq)))))
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(define (for-each proc seq)
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(if (not (null? seq))
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(begin
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(proc (car seq))
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(for-each proc (cdr seq)))))
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(define (make-point x y)
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(cons x y))
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(define (point-x p)
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(car p))
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(define (point-y p)
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(cdr p))
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(define (point-list->double-array point-list)
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(define (convert points array pos)
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(if (not (null? points))
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(begin
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(aset array (* 2 pos) (point-x (car points)))
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(aset array (+ 1 (* 2 pos)) (point-y (car points)))
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(convert (cdr points) array (+ pos 1)))))
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(let* ((how-many (length point-list))
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(a (cons-array (* 2 how-many) 'double)))
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(convert point-list a 0)
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a))
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(define (make-arrow size
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offset)
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(list (make-point offset offset)
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(make-point (- size offset) (/ size 2))
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(make-point offset (- size offset))))
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(define (rotate-points points size orientation)
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(map (lambda (p)
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(let ((px (point-x p))
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(py (point-y p)))
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(cond ((= orientation 0) (make-point px py)) ; right
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((= orientation 1) (make-point (- size px) py)) ; left
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((= orientation 2) (make-point py (- size px))) ; up
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((= orientation 3) (make-point py px))))) ; down
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points))
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; the main function
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(let* ((img (car (gimp-image-new size size RGB)))
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(grow-amount (/ size 12))
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(blur-radius (/ size 3))
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@ -20,61 +20,65 @@
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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(define (map proc seq)
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(if (null? seq)
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'()
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(cons (proc (car seq))
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(map proc (cdr seq)))))
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(define (for-each proc seq)
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(if (not (null? seq))
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(begin
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(proc (car seq))
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(for-each proc (cdr seq)))))
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(define (make-point x y)
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(cons x y))
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(define (point-x p)
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(car p))
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(define (point-y p)
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(cdr p))
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(define (point-list->double-array point-list)
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(let* ((how-many (length point-list))
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(a (cons-array (* 2 how-many) 'double))
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(count 0))
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(for-each (lambda (p)
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(aset a (* count 2) (point-x p))
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(aset a (+ 1 (* count 2)) (point-y p))
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(set! count (+ count 1)))
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point-list)
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a))
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(define (rotate-points points size orientation)
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(map (lambda (p)
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(let ((px (point-x p))
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(py (point-y p)))
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(cond ((= orientation 0) (make-point px py)) ; right
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((= orientation 1) (make-point (- size px) py)) ; left
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((= orientation 2) (make-point py (- size px))) ; up
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((= orientation 3) (make-point py px))))) ; down
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points))
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(define (make-arrow size offset)
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(list (make-point offset offset)
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(make-point (- size offset) (/ size 2))
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(make-point offset (- size offset))))
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(define (script-fu-beveled-pattern-arrow size orientation pattern)
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; define some local helper functions
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(define (map proc seq)
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(if (null? seq)
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'()
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(cons (proc (car seq))
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(map proc (cdr seq)))))
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(define (for-each proc seq)
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(if (not (null? seq))
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(begin
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(proc (car seq))
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(for-each proc (cdr seq)))))
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(define (make-point x y)
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(cons x y))
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(define (point-x p)
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(car p))
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(define (point-y p)
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(cdr p))
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(define (point-list->double-array point-list)
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(let* ((how-many (length point-list))
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(a (cons-array (* 2 how-many) 'double))
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(count 0))
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(for-each (lambda (p)
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(aset a (* count 2) (point-x p))
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(aset a (+ 1 (* count 2)) (point-y p))
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(set! count (+ count 1)))
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point-list)
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a))
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(define (rotate-points points size orientation)
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(map (lambda (p)
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(let ((px (point-x p))
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(py (point-y p)))
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(cond ((= orientation 0) (make-point px py)) ; right
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((= orientation 1) (make-point (- size px) py)) ; left
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((= orientation 2) (make-point py (- size px))) ; up
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((= orientation 3) (make-point py px))))) ; down
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points))
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(define (make-arrow size offset)
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(list (make-point offset offset)
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(make-point (- size offset) (/ size 2))
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(make-point offset (- size offset))))
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; the main function
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(let* ((old-bg-color (car (gimp-palette-get-background)))
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(img (car (gimp-image-new size size RGB)))
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(background (car (gimp-layer-new img size size RGB-IMAGE "Arrow" 100 NORMAL-MODE)))
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(bumpmap (car (gimp-layer-new img size size RGB-IMAGE "Bumpmap" 100 NORMAL-MODE)))
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(big-arrow (point-list->double-array (rotate-points (make-arrow size 6) size orientation)))
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(med-arrow (point-list->double-array (rotate-points (make-arrow size 7) size orientation)))
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(small-arrow (point-list->double-array (rotate-points (make-arrow size 8) size orientation))))
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(img (car (gimp-image-new size size RGB)))
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(background (car (gimp-layer-new img size size RGB-IMAGE "Arrow" 100 NORMAL-MODE)))
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(bumpmap (car (gimp-layer-new img size size RGB-IMAGE "Bumpmap" 100 NORMAL-MODE)))
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(big-arrow (point-list->double-array (rotate-points (make-arrow size 6) size orientation)))
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(med-arrow (point-list->double-array (rotate-points (make-arrow size 7) size orientation)))
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(small-arrow (point-list->double-array (rotate-points (make-arrow size 8) size orientation))))
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(gimp-image-undo-disable img)
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(gimp-image-add-layer img background -1)
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@ -134,15 +138,15 @@
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(script-fu-register "script-fu-beveled-pattern-arrow"
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_"<Toolbox>/Xtns/Script-Fu/Web Page Themes/Beveled Pattern/_Arrow..."
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"Beveled pattern arrow"
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"Federico Mena Quintero"
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"Federico Mena Quintero"
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"July 1997"
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""
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SF-ADJUSTMENT _"Size" '(32 5 150 1 10 0 1)
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SF-OPTION _"Orientation" '(_"Right"
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_"Left"
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_"Up"
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_"Down")
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SF-PATTERN _"Pattern" "Wood")
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_"<Toolbox>/Xtns/Script-Fu/Web Page Themes/Beveled Pattern/_Arrow..."
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"Beveled pattern arrow"
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"Federico Mena Quintero"
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"Federico Mena Quintero"
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"July 1997"
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""
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SF-ADJUSTMENT _"Size" '(32 5 150 1 10 0 1)
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SF-OPTION _"Orientation" '(_"Right"
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_"Left"
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_"Up"
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_"Down")
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SF-PATTERN _"Pattern" "Wood")
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