mirror of https://github.com/GNOME/gimp.git
164 lines
5.5 KiB
Scheme
164 lines
5.5 KiB
Scheme
; The GIMP -- an image manipulation program
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; Copyright (C) 1995 Spencer Kimball and Peter Mattis
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;
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;
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; Truchet - a script to create Truchet patterns
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; by Adrian Likins <aklikins@eos.ncsu.edu>
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; http://www4.ncsu.edu/~aklikins/
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; version about .8 give or take
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;
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; Lots of thanks to Quartic for his help.
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;
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;
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; The utility of this script is left as an exercise for the reader.
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(define (center-ellipse img cx cy rx ry op aa feather frad)
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(gimp-ellipse-select img (- cx rx) (- cy ry) (+ rx rx ) (+ ry ry ) op aa feather frad))
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(define (use-tiles img drawable height width img2 drawable2 xoffset yoffset)
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(gimp-edit-copy drawable2)
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(let ((floating-sel (car (gimp-edit-paste drawable FALSE))))
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(gimp-layer-set-offsets floating-sel xoffset yoffset)
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(gimp-floating-sel-anchor floating-sel)
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)
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)
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(define (create-tiles img drawable1 drawable2 size thickness backcolor forecolor)
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(let* (
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(half-thickness (/ thickness 2))
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(outer-radius (+ (/ size 2) half-thickness))
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(inner-radius (- (/ size 2) half-thickness))
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)
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(gimp-selection-all img)
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(gimp-palette-set-background backcolor)
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(gimp-edit-fill drawable1 BACKGROUND-FILL)
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(let* (
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(tempSize (* size 3))
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(temp-img (car (gimp-image-new tempSize tempSize RGB)))
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(temp-draw (car (gimp-layer-new temp-img tempSize tempSize RGB-IMAGE "Jabar" 100 NORMAL-MODE)))
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)
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(gimp-image-undo-disable temp-img)
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(gimp-image-add-layer temp-img temp-draw 0)
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(gimp-palette-set-background backcolor)
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(gimp-edit-fill temp-draw BACKGROUND-FILL)
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(center-ellipse temp-img size size outer-radius outer-radius CHANNEL-OP-REPLACE TRUE FALSE 0)
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(center-ellipse temp-img size size inner-radius inner-radius CHANNEL-OP-SUBTRACT TRUE FALSE 0)
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(center-ellipse temp-img (* size 2) (* size 2) outer-radius outer-radius CHANNEL-OP-ADD TRUE FALSE 0)
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(center-ellipse temp-img (* size 2) (* size 2) inner-radius inner-radius CHANNEL-OP-SUBTRACT TRUE FALSE 0)
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(gimp-palette-set-background forecolor)
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(gimp-edit-fill temp-draw BACKGROUND-FILL)
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(gimp-selection-none temp-img)
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(gimp-image-resize temp-img size size (- size) (- size))
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; woo hoo it works....finally...
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(gimp-selection-all temp-img)
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(gimp-edit-copy temp-draw)
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(let ((floating-sel (car (gimp-edit-paste drawable2 FALSE))))
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(gimp-floating-sel-anchor floating-sel))
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(let ((floating-sel (car (gimp-edit-paste drawable1 FALSE))))
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(gimp-floating-sel-anchor floating-sel))
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(let ((drawble (car (gimp-flip drawable1 1)))))
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;(gimp-display-new temp-img)
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(gimp-image-delete temp-img)
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)
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)
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)
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(define (script-fu-truchet size thickness backcolor forecolor xtiles ytiles)
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(let* (
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(width (* size xtiles))
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(height (* size ytiles))
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(img (car (gimp-image-new width height RGB)))
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(tile (car (gimp-image-new size size RGB)))
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(layer-one (car (gimp-layer-new img width height
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RGB-IMAGE "Rambis" 100 NORMAL-MODE)))
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(tiledraw1 (car (gimp-layer-new tile size size
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RGB-IMAGE "Johnson" 100 NORMAL-MODE)))
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(tiledraw2 (car (gimp-layer-new tile size size
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RGB-IMAGE "Cooper" 100 NORMAL-MODE)))
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(Xindex 0)
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(Yindex 0)
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(old-bg (car (gimp-palette-get-background)))
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)
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(gimp-image-undo-disable img)
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(gimp-image-undo-disable tile)
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(gimp-image-add-layer img layer-one 0)
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(gimp-image-add-layer tile tiledraw1 0)
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(gimp-image-add-layer tile tiledraw2 0)
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;just to look a little better
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(gimp-selection-all img)
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(gimp-palette-set-background backcolor)
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(gimp-edit-fill layer-one BACKGROUND-FILL)
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(gimp-selection-none img)
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(create-tiles tile tiledraw1 tiledraw2 size thickness backcolor forecolor)
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(while (<= Xindex xtiles)
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(while (<= Yindex ytiles)
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(if (= (rand 2) 0)
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(use-tiles img layer-one height width tile tiledraw1 (* Xindex size) (* Yindex size))
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(use-tiles img layer-one height width tile tiledraw2 (* Xindex size) (* Yindex size))
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)
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(set! Yindex (+ Yindex 1))
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)
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(set! Yindex 0)
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(set! Xindex (+ Xindex 1))
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)
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(gimp-image-delete tile)
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(gimp-palette-set-background old-bg)
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(gimp-image-undo-enable img)
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(gimp-display-new img)
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)
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)
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(script-fu-register "script-fu-truchet"
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_"<Toolbox>/Xtns/Script-Fu/Patterns/T_ruchet..."
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"Create a Truchet pattern \n\nWorks best with even sized thicknesses"
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"Adrian Likins <aklikins@eos.ncsu.edu>"
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"Adrian Likins"
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"1997"
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""
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SF-ADJUSTMENT _"Block size" '(32 2 512 1 10 1 1)
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SF-ADJUSTMENT _"Thickness" '(2 1 512 1 10 1 1)
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SF-COLOR _"Background color" '(255 255 255)
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SF-COLOR _"Foreground color" '(0 0 0)
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SF-ADJUSTMENT _"Number of X tiles" '(5 1 512 1 10 1 1)
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SF-ADJUSTMENT _"Number of Y tiles" '(5 1 512 1 10 1 1)
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)
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