Gimp/plug-ins/script-fu/scripts/difference-clouds.scm
Jehan 5af02d292a app, pdb, plug-ins: replace (plug-in-solid-noise).
For plug-in writers reference, these are equivalent:

- (plug-in-solid-noise RUN-NONINTERACTIVE image layer FALSE TRUE seed 2 2 2)
+ (let* ((width  (cadddr (gimp-drawable-mask-intersect layer)))
+        (height (caddr (cddr (gimp-drawable-mask-intersect layer)))))
+   (gimp-drawable-merge-new-filter layer "gegl:noise-solid" 0 LAYER-MODE-REPLACE 1.0 "tileable" FALSE "turbulent" TRUE "seed" seed
+                                                                                     "detail" 2 "x-size" 2.0 "y-size" 2.0
+                                                                                     "width" width "height" height)
+ )
2024-12-17 16:24:54 +00:00

85 lines
3.6 KiB
Scheme

; Plugin for the GNU Image Manipulation Program
; Copyright (C) 2006 Martin Nordholts
;
; 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/>.
;
; Renders Difference Clouds onto a layer, i.e. solid noise merged down with the
; Difference Mode
;
(define (script-fu-difference-clouds image
drawables)
(let* ((layer (vector-ref drawables 0))
(draw-offset-x (car (gimp-drawable-get-offsets layer)))
(draw-offset-y (cadr (gimp-drawable-get-offsets layer)))
(has-sel (car (gimp-drawable-mask-intersect layer)))
(sel-offset-x (cadr (gimp-drawable-mask-intersect layer)))
(sel-offset-y (caddr (gimp-drawable-mask-intersect layer)))
(width (cadddr (gimp-drawable-mask-intersect layer)))
(height (caddr (cddr (gimp-drawable-mask-intersect layer))))
(type (car (gimp-drawable-type-with-alpha layer)))
(diff-clouds -1)
(offset-x 0)
(offset-y 0)
)
(gimp-image-undo-group-start image)
; Create the cloud layer
(set! diff-clouds (car (gimp-layer-new image width height type
"Clouds" 100 LAYER-MODE-DIFFERENCE)))
; Add the cloud layer above the current layer
(gimp-image-insert-layer image diff-clouds 0 -1)
; Clear the layer (so there are no noise in it)
(gimp-drawable-fill diff-clouds FILL-TRANSPARENT)
; Selections are relative to the drawable; adjust the final offset
(set! offset-x (+ draw-offset-x sel-offset-x))
(set! offset-y (+ draw-offset-y sel-offset-y))
; Offset the clouds layer
(if (gimp-item-id-is-layer layer)
(gimp-item-transform-translate diff-clouds offset-x offset-y))
; Show the solid noise dialog
(let* ((cloud-width (cadddr (gimp-drawable-mask-intersect diff-clouds)))
(cloud-height (caddr (cddr (gimp-drawable-mask-intersect diff-clouds)))))
(gimp-drawable-merge-new-filter diff-clouds "gegl:noise-solid" 0 LAYER-MODE-REPLACE 1.0 "tileable" FALSE "turbulent" FALSE "seed" 0
"detail" 1 "x-size" 4.0 "y-size" 4.0
"width" cloud-width "height" cloud-height)
)
; Merge the clouds layer with the layer below
(gimp-image-merge-down image diff-clouds EXPAND-AS-NECESSARY)
(gimp-image-undo-group-end image)
(gimp-displays-flush)
)
)
(script-fu-register-filter "script-fu-difference-clouds"
_"_Difference Clouds"
_"Solid noise applied with Difference layer mode"
"Martin Nordholts <enselic@hotmail.com>"
"Martin Nordholts"
"2006/10/25"
"RGB* GRAY*"
SF-ONE-OR-MORE-DRAWABLE)
(script-fu-menu-register "script-fu-difference-clouds"
"<Image>/Filters/Render/Noise")