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; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Lava effect
; Copyright (c) 1997 Adrian Likins
; aklikins@eos.ncsu.edu
;
; based on a idea by Sven Riedel <lynx@heim8.tu-clausthal.de>
; tweaked a bit by Sven Neumann <neumanns@uni-duesseldorf.de>
;
; 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 (script-fu-lava image
drawable
seed
tile_size
mask_size
gradient
keep-selection
separate-layer
current-grad)
(let* (
(type (car (gimp-drawable-type-with-alpha drawable)))
(image-width (car (gimp-image-width image)))
(image-height (car (gimp-image-height image))))
(gimp-context-push)
(gimp-image-undo-group-start image)
(gimp-layer-add-alpha drawable)
(if (= (car (gimp-selection-is-empty image)) TRUE)
(begin
(gimp-selection-layer-alpha drawable)
(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! lava-layer (car (gimp-layer-new image
select-width
select-height
type
"Lava Layer"
100
NORMAL-MODE)))
(gimp-image-add-layer image lava-layer -1)
(gimp-layer-set-offsets lava-layer select-offset-x select-offset-y)
(gimp-selection-none image)
(gimp-edit-clear lava-layer)
(gimp-selection-load active-selection)
(gimp-image-set-active-layer image lava-layer)))
(set! active-layer (car (gimp-image-get-active-layer image)))
(if (= current-grad FALSE)
(gimp-context-set-gradient gradient))
(plug-in-solid-noise 1 image active-layer FALSE TRUE seed 2 2 2)
(plug-in-cubism 1 image active-layer tile_size 2.5 0)
(plug-in-oilify 1 image active-layer mask_size 0)
(plug-in-edge 1 image active-layer 2 0 0)
(plug-in-gauss-rle 1 image active-layer 2 TRUE TRUE)
(plug-in-gradmap 1 image active-layer)
(if (= keep-selection FALSE)
(gimp-selection-none image))
(gimp-image-set-active-layer image drawable)
(gimp-image-remove-channel image active-selection)
(gimp-image-undo-group-end image)
(gimp-displays-flush)
(gimp-context-pop)))
(script-fu-register "script-fu-lava"
_"_Lava..."
"Fills the current selection with lava."
"Adrian Likins <adrian@gimp.org>"
"Adrian Likins"
"10/12/97"
"RGB* GRAY*"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-ADJUSTMENT _"Seed" '(10 1 30000 1 10 0 1)
SF-ADJUSTMENT _"Size" '(10 0 100 1 10 0 1)
SF-ADJUSTMENT _"Roughness" '(7 3 50 1 10 0 0)
SF-GRADIENT _"Gradient" "German flag smooth"
SF-TOGGLE _"Keep selection" TRUE
SF-TOGGLE _"Separate layer" TRUE
SF-TOGGLE _"Use current gradient" FALSE)
(script-fu-menu-register "script-fu-lava"
_"<Image>/Script-Fu/Render")
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