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; GIMP - The GNU Image Manipulation Program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Circuit board effect
; Copyright (c) 1997 Adrian Likins
;
; Generates what looks a little like the back of an old circuit board.
; Looks even better when gradient-mapp'ed with a suitable gradient.
;
; 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 <https://www.gnu.org/licenses/>.
(define (script-fu-circuit image
drawables
mask-size
seed
remove-bg
keep-selection
separate-layer)
(let* (
(layer (vector-ref drawables 0))
(type (car (gimp-drawable-type-with-alpha layer)))
(image-width (car (gimp-image-get-width image)))
(image-height (car (gimp-image-get-height image)))
(active-selection 0)
(from-selection 0)
(selection-bounds 0)
(select-offset-x 0)
(select-offset-y 0)
(select-width 0)
(select-height 0)
(effect-layer 0)
(active-layer 0)
)
(gimp-context-push)
(gimp-context-set-defaults)
(gimp-image-undo-group-start image)
(gimp-layer-add-alpha layer)
(if (= (car (gimp-selection-is-empty image)) TRUE)
(begin
(gimp-image-select-item image CHANNEL-OP-REPLACE layer)
(set! active-selection (car (gimp-selection-save image)))
(set! from-selection FALSE))
(begin
(set! from-selection TRUE)
(set! active-selection (car (gimp-selection-save image)))))
(set! selection-bounds (gimp-selection-bounds image))
(set! select-offset-x (cadr selection-bounds))
(set! select-offset-y (caddr selection-bounds))
(set! select-width (- (cadr (cddr selection-bounds)) select-offset-x))
(set! select-height (- (caddr (cddr selection-bounds)) select-offset-y))
(if (= separate-layer TRUE)
(begin
(set! effect-layer (car (gimp-layer-new image
_"Effect layer"
select-width
select-height
type
100
LAYER-MODE-NORMAL)))
(gimp-image-insert-layer image effect-layer 0 -1)
(gimp-layer-set-offsets effect-layer select-offset-x select-offset-y)
(gimp-selection-none image)
(gimp-drawable-edit-clear effect-layer)
(gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
(gimp-edit-copy (vector layer))
(let* (
(pasted (car (gimp-edit-paste effect-layer FALSE)))
(num-pasted (vector-length pasted))
(floating-sel (vector-ref pasted (- num-pasted 1)))
)
(gimp-floating-sel-anchor floating-sel)
)
(gimp-image-set-selected-layers image (vector effect-layer)))
(set! effect-layer layer)
)
(set! active-layer effect-layer)
(if (= remove-bg TRUE)
(gimp-context-set-foreground '(0 0 0))
(gimp-context-set-foreground '(14 14 14))
)
(gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
(gimp-drawable-merge-new-filter active-layer "gegl:maze" 0 LAYER-MODE-REPLACE 1.0 "x" 5 "y" 5 "tileable" TRUE "algorithm-type" "depth-first"
"seed" seed
"fg-color" (car (gimp-context-get-foreground))
"bg-color" (car (gimp-context-get-background)))
(gimp-drawable-merge-new-filter active-layer "gegl:oilify" 0 LAYER-MODE-REPLACE 1.0 "mask-radius" (max 1 (/ mask-size 2)) "use-inten" FALSE)
(gimp-drawable-merge-new-filter active-layer "gegl:edge" 0 LAYER-MODE-REPLACE 1.0 "amount" 2.0 "border-behavior" "loop" "algorithm" "sobel")
(if (= type RGBA-IMAGE)
(gimp-drawable-desaturate active-layer DESATURATE-LIGHTNESS))
(if (and
(= remove-bg TRUE)
(= separate-layer TRUE))
(begin
(gimp-image-select-color image CHANNEL-OP-REPLACE active-layer '(0 0 0))
(gimp-drawable-edit-clear active-layer)))
(if (= keep-selection FALSE)
(gimp-selection-none image))
(gimp-image-remove-channel image active-selection)
(gimp-image-set-selected-layers image (vector layer))
(gimp-image-undo-group-end image)
(gimp-displays-flush)
(gimp-context-pop)
)
)
(script-fu-register-filter "script-fu-circuit"
_"_Circuit..."
_"Fill the selected region (or alpha) with traces like those on a circuit board"
"Adrian Likins <adrian@gimp.org>"
"Adrian Likins"
"10/17/97"
"RGB* GRAY*"
SF-ONE-OR-MORE-DRAWABLE
SF-ADJUSTMENT _"Oilify mask size" '(17 3 50 1 10 0 1)
SF-ADJUSTMENT _"Circuit seed" '(3 1 3000000 1 10 0 1)
SF-TOGGLE _"No background (only for separate layer)" FALSE
SF-TOGGLE _"Keep selection" TRUE
SF-TOGGLE _"Separate layer" TRUE
)
(script-fu-menu-register "script-fu-circuit"
"<Image>/Filters/Render")
|
