/usr/share/gimp/2.0/scripts/alien-glow-arrow.scm is in gimp-data 2.8.16-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | ; GIMP - The GNU Image Manipulation Program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Alien Glow themed arrows for web pages
; Copyright (c) 1997 Adrian Likins
; aklikins@eos.ncsu.edu
;
;
; Based on code from
; 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 3 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, see <http://www.gnu.org/licenses/>.
(define (script-fu-alien-glow-right-arrow size
orientation
glow-color
bg-color
flatten)
; some local helper functions, better to not define globally,
; since otherwise the definitions could be clobbered by other scripts.
(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)
(define (convert points array pos)
(if (not (null? points))
(begin
(aset array (* 2 pos) (point-x (car points)))
(aset array (+ 1 (* 2 pos)) (point-y (car points)))
(convert (cdr points) array (+ pos 1))
)
)
)
(let* (
(how-many (length point-list))
(a (cons-array (* 2 how-many) 'double))
)
(convert point-list a 0)
a
)
)
(define (make-arrow size
offset)
(list (make-point offset offset)
(make-point (- size offset) (/ size 2))
(make-point offset (- size offset))
)
)
(define (rotate-points points size orientation)
(map (lambda (p)
(let ((px (point-x p))
(py (point-y p)))
(cond ((= orientation 0) (make-point px py)) ; right
((= orientation 1) (make-point (- size px) py)) ; left
((= orientation 2) (make-point py (- size px))) ; up
((= orientation 3) (make-point py px)) ; down
)
)
)
points
)
)
; the main function
(let* (
(img (car (gimp-image-new size size RGB)))
(grow-amount (/ size 12))
(blur-radius (/ size 3))
(offset (/ size 6))
(ruler-layer (car (gimp-layer-new img
size size RGBA-IMAGE
_"Arrow" 100 NORMAL-MODE)))
(glow-layer (car (gimp-layer-new img
size size RGBA-IMAGE
_"Alien Glow" 100 NORMAL-MODE)))
(bg-layer (car (gimp-layer-new img
size size RGB-IMAGE
_"Background" 100 NORMAL-MODE)))
(big-arrow (point-list->double-array
(rotate-points (make-arrow size offset)
size orientation)))
)
(gimp-context-push)
(gimp-context-set-defaults)
(gimp-image-undo-disable img)
;(gimp-image-resize img (+ length height) (+ height height) 0 0)
(gimp-image-insert-layer img bg-layer 0 1)
(gimp-image-insert-layer img glow-layer 0 -1)
(gimp-image-insert-layer img ruler-layer 0 -1)
(gimp-edit-clear glow-layer)
(gimp-edit-clear ruler-layer)
(gimp-image-select-polygon img CHANNEL-OP-REPLACE 6 big-arrow)
(gimp-context-set-foreground '(103 103 103))
(gimp-context-set-background '(0 0 0))
(gimp-edit-blend ruler-layer FG-BG-RGB-MODE NORMAL-MODE
GRADIENT-SHAPEBURST-ANGULAR 100 0 REPEAT-NONE FALSE
FALSE 0 0 TRUE
0 0 size size)
(gimp-selection-grow img grow-amount)
(gimp-context-set-foreground glow-color)
(gimp-edit-fill glow-layer FOREGROUND-FILL)
(gimp-selection-none img)
(plug-in-gauss-rle RUN-NONINTERACTIVE img glow-layer blur-radius TRUE TRUE)
(gimp-context-set-background bg-color)
(gimp-edit-fill bg-layer BACKGROUND-FILL)
(if (= flatten TRUE)
(gimp-image-flatten img)
)
(gimp-image-undo-enable img)
(gimp-display-new img)
(gimp-context-pop)
)
)
(script-fu-register "script-fu-alien-glow-right-arrow"
_"_Arrow..."
_"Create an arrow graphic with an eerie glow for web pages"
"Adrian Likins"
"Adrian Likins"
"1997"
""
SF-ADJUSTMENT _"Size" '(32 5 150 1 10 0 1)
SF-OPTION _"Orientation" '(_"Right" _"Left" _"Up" _"Down")
SF-COLOR _"Glow color" '(63 252 0)
SF-COLOR _"Background color" "black"
SF-TOGGLE _"Flatten image" TRUE
)
(script-fu-menu-register "script-fu-alien-glow-right-arrow"
"<Image>/File/Create/Web Page Themes/Alien Glow")
|