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; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Land --- create a pattern that resembles a Topographic map
; Copyright (C) 1997 Adrian Karstan Likins
; aklikins@eos.ncsu.edu
;
;
; This script works on the current gradient you have loaded.
; Some suggested gradients:
; Land (produces a earthlike map)
; Brushed_aluminum (looks like the moon)
;
;
; Thanks to Quartic for helping me debug this thing.
;
; 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-land width height seed detail landheight seadepth xscale yscale gradient)
(let* (
(img (car (gimp-image-new width height RGB)))
(layer-one (car (gimp-layer-new img width height
RGB-IMAGE "Bottom" 100 NORMAL-MODE)))
(layer-two)
)
(gimp-context-set-gradient gradient)
(gimp-image-undo-disable img)
(gimp-image-add-layer img layer-one 0)
(plug-in-solid-noise 1 img layer-one TRUE FALSE seed detail xscale yscale)
(plug-in-c-astretch 1 img layer-one)
(set! layer-two (car (gimp-layer-copy layer-one TRUE)))
(gimp-image-add-layer img layer-two -1)
(gimp-image-set-active-layer img layer-two)
(plug-in-gradmap 1 img layer-two)
(gimp-by-color-select layer-one '(190 190 190) 55 CHANNEL-OP-REPLACE FALSE FALSE 0 FALSE)
(plug-in-bump-map 1 img layer-two layer-one 135.0 35 landheight 0 0 0 0 TRUE FALSE 0)
;(plug-in-c-astretch 1 img layer-two)
(gimp-selection-invert img)
(plug-in-bump-map 1 img layer-two layer-one 135.0 35 seadepth 0 0 0 0 TRUE FALSE 0)
;(plug-in-c-astretch 1 img layer-two)
; uncomment the next line if you want to keep a selection of the "land"
(gimp-selection-none img)
(gimp-display-new img)
(gimp-image-undo-enable img)
))
(script-fu-register "script-fu-land"
_"_Land..."
"A Topgraphic map pattern"
"Adrian Likins <aklikins@eos.ncsu.edu>"
"Adrian Likins"
"1997"
""
SF-ADJUSTMENT _"Image width" '(256 10 1000 1 10 0 1)
SF-ADJUSTMENT _"Image height" '(256 10 1000 1 10 0 1)
SF-ADJUSTMENT _"Random seed" '(32 0 15000000 1 10 0 1)
SF-ADJUSTMENT _"Detail level" '(4 1 15 1 5 0 0)
SF-ADJUSTMENT _"Land height" '(60 1 65 1 10 0 1)
SF-ADJUSTMENT _"Sea depth" '(4 1 65 1 10 0 1)
SF-ADJUSTMENT _"Scale X" '(4 0.1 16 1 5 0.1 0)
SF-ADJUSTMENT _"Scale Y" '(4 0.1 16 1 5 0.1 0)
SF-GRADIENT _"Gradient" "Land 1")
(script-fu-menu-register "script-fu-land"
_"<Toolbox>/Xtns/Script-Fu/Patterns")
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