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|
; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Weave script --- make an image look as if it were woven
; Copyright (C) 1997 Federico Mena Quintero
; federico@nuclecu.unam.mx
;
; 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.
; Copies the specified rectangle from/to the specified drawable
(define (copy-rectangle img
drawable
x1
y1
width
height
dest-x
dest-y)
(gimp-rect-select img x1 y1 width height CHANNEL-OP-REPLACE FALSE 0)
(gimp-edit-copy drawable)
(let ((floating-sel (car (gimp-edit-paste drawable FALSE))))
(gimp-layer-set-offsets floating-sel dest-x dest-y)
(gimp-floating-sel-anchor floating-sel))
(gimp-selection-none img))
; Creates a single weaving tile
(define (create-weave-tile ribbon-width
ribbon-spacing
shadow-darkness
shadow-depth)
(let* ((tile-size (+ (* 2 ribbon-width) (* 2 ribbon-spacing)))
(darkness (* 255 (/ (- 100 shadow-darkness) 100)))
(img (car (gimp-image-new tile-size tile-size RGB)))
(drawable (car (gimp-layer-new img tile-size tile-size RGB-IMAGE
"Weave tile" 100 NORMAL-MODE))))
(gimp-image-undo-disable img)
(gimp-image-add-layer img drawable 0)
(gimp-context-set-background '(0 0 0))
(gimp-edit-fill drawable BACKGROUND-FILL)
; Create main horizontal ribbon
(gimp-context-set-foreground '(255 255 255))
(gimp-context-set-background (list darkness darkness darkness))
(gimp-rect-select img
0
ribbon-spacing
(+ (* 2 ribbon-spacing) ribbon-width)
ribbon-width
CHANNEL-OP-REPLACE
FALSE
0)
(gimp-edit-blend drawable FG-BG-RGB-MODE NORMAL-MODE
GRADIENT-BILINEAR 100 (- 100 shadow-depth) REPEAT-NONE FALSE
FALSE 0 0 TRUE
(/ (+ (* 2 ribbon-spacing) ribbon-width -1) 2) 0 0 0)
; Create main vertical ribbon
(gimp-rect-select img
(+ (* 2 ribbon-spacing) ribbon-width)
0
ribbon-width
(+ (* 2 ribbon-spacing) ribbon-width)
CHANNEL-OP-REPLACE
FALSE
0)
(gimp-edit-blend drawable FG-BG-RGB-MODE NORMAL-MODE
GRADIENT-BILINEAR 100 (- 100 shadow-depth) REPEAT-NONE FALSE
FALSE 0 0 TRUE
0 (/ (+ (* 2 ribbon-spacing) ribbon-width -1) 2) 0 0)
; Create the secondary horizontal ribbon
(copy-rectangle img
drawable
0
ribbon-spacing
(+ ribbon-width ribbon-spacing)
ribbon-width
(+ ribbon-width ribbon-spacing)
(+ (* 2 ribbon-spacing) ribbon-width))
(copy-rectangle img
drawable
(+ ribbon-width ribbon-spacing)
ribbon-spacing
ribbon-spacing
ribbon-width
0
(+ (* 2 ribbon-spacing) ribbon-width))
; Create the secondary vertical ribbon
(copy-rectangle img
drawable
(+ (* 2 ribbon-spacing) ribbon-width)
0
ribbon-width
(+ ribbon-width ribbon-spacing)
ribbon-spacing
(+ ribbon-width ribbon-spacing))
(copy-rectangle img
drawable
(+ (* 2 ribbon-spacing) ribbon-width)
(+ ribbon-width ribbon-spacing)
ribbon-width
ribbon-spacing
ribbon-spacing
0)
; Done
(gimp-image-undo-enable img)
(list img drawable)))
; Creates a complete weaving mask
(define (create-weave width
height
ribbon-width
ribbon-spacing
shadow-darkness
shadow-depth)
(let* ((tile (create-weave-tile ribbon-width ribbon-spacing shadow-darkness
shadow-depth))
(tile-img (car tile))
(tile-layer (cadr tile))
(weaving (plug-in-tile 1 tile-img tile-layer width height TRUE)))
(gimp-image-delete tile-img)
weaving))
; Creates a single tile for masking
(define (create-mask-tile ribbon-width
ribbon-spacing
r1-x1
r1-y1
r1-width
r1-height
r2-x1
r2-y1
r2-width
r2-height
r3-x1
r3-y1
r3-width
r3-height)
(let* ((tile-size (+ (* 2 ribbon-width) (* 2 ribbon-spacing)))
(img (car (gimp-image-new tile-size tile-size RGB)))
(drawable (car (gimp-layer-new img tile-size tile-size RGB-IMAGE
"Mask" 100 NORMAL-MODE))))
(gimp-image-undo-disable img)
(gimp-image-add-layer img drawable 0)
(gimp-context-set-background '(0 0 0))
(gimp-edit-fill drawable BACKGROUND-FILL)
(gimp-rect-select img r1-x1 r1-y1 r1-width r1-height CHANNEL-OP-REPLACE FALSE 0)
(gimp-rect-select img r2-x1 r2-y1 r2-width r2-height CHANNEL-OP-ADD FALSE 0)
(gimp-rect-select img r3-x1 r3-y1 r3-width r3-height CHANNEL-OP-ADD FALSE 0)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill drawable BACKGROUND-FILL)
(gimp-selection-none img)
(gimp-image-undo-enable img)
(list img drawable)))
; Creates a complete mask image
(define (create-mask final-width
final-height
ribbon-width
ribbon-spacing
r1-x1
r1-y1
r1-width
r1-height
r2-x1
r2-y1
r2-width
r2-height
r3-x1
r3-y1
r3-width
r3-height)
(let* ((tile (create-mask-tile ribbon-width ribbon-spacing
r1-x1 r1-y1 r1-width r1-height
r2-x1 r2-y1 r2-width r2-height
r3-x1 r3-y1 r3-width r3-height))
(tile-img (car tile))
(tile-layer (cadr tile))
(mask (plug-in-tile 1 tile-img tile-layer final-width final-height
TRUE)))
(gimp-image-delete tile-img)
mask))
; Creates the mask for horizontal ribbons
(define (create-horizontal-mask ribbon-width
ribbon-spacing
final-width
final-height)
(create-mask final-width
final-height
ribbon-width
ribbon-spacing
0
ribbon-spacing
(+ (* 2 ribbon-spacing) ribbon-width)
ribbon-width
0
(+ (* 2 ribbon-spacing) ribbon-width)
ribbon-spacing
ribbon-width
(+ ribbon-width ribbon-spacing)
(+ (* 2 ribbon-spacing) ribbon-width)
(+ ribbon-width ribbon-spacing)
ribbon-width))
; Creates the mask for vertical ribbons
(define (create-vertical-mask ribbon-width
ribbon-spacing
final-width
final-height)
(create-mask final-width
final-height
ribbon-width
ribbon-spacing
(+ (* 2 ribbon-spacing) ribbon-width)
0
ribbon-width
(+ (* 2 ribbon-spacing) ribbon-width)
ribbon-spacing
0
ribbon-width
ribbon-spacing
ribbon-spacing
(+ ribbon-width ribbon-spacing)
ribbon-width
(+ ribbon-width ribbon-spacing)))
; Adds a threads layer at a certain orientation to the specified image
(define (create-threads-layer img
width
height
length
density
orientation)
(let* ((drawable (car (gimp-layer-new img width height RGBA-IMAGE
"Threads" 100 NORMAL-MODE)))
(dense (/ density 100.0)))
(gimp-image-add-layer img drawable -1)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill drawable BACKGROUND-FILL)
(plug-in-noisify 1 img drawable FALSE dense dense dense dense)
(plug-in-c-astretch 1 img drawable)
(cond ((eq? orientation 'horizontal)
(plug-in-gauss-rle 1 img drawable length TRUE FALSE))
((eq? orientation 'vertical)
(plug-in-gauss-rle 1 img drawable length FALSE TRUE)))
(plug-in-c-astretch 1 img drawable)
drawable))
(define (create-complete-weave width
height
ribbon-width
ribbon-spacing
shadow-darkness
shadow-depth
thread-length
thread-density
thread-intensity)
(let* ((weave (create-weave width height ribbon-width ribbon-spacing
shadow-darkness shadow-depth))
(w-img (car weave))
(w-layer (cadr weave))
(h-layer (create-threads-layer w-img width height thread-length
thread-density 'horizontal))
(h-mask (car (gimp-layer-create-mask h-layer ADD-WHITE-MASK)))
(v-layer (create-threads-layer w-img width height thread-length
thread-density 'vertical))
(v-mask (car (gimp-layer-create-mask v-layer ADD-WHITE-MASK)))
(hmask (create-horizontal-mask ribbon-width ribbon-spacing
width height))
(hm-img (car hmask))
(hm-layer (cadr hmask))
(vmask (create-vertical-mask ribbon-width ribbon-spacing width height))
(vm-img (car vmask))
(vm-layer (cadr vmask)))
(gimp-layer-add-mask h-layer h-mask)
(gimp-selection-all hm-img)
(gimp-edit-copy hm-layer)
(gimp-image-delete hm-img)
(gimp-floating-sel-anchor (car (gimp-edit-paste h-mask FALSE)))
(gimp-layer-set-opacity h-layer thread-intensity)
(gimp-layer-set-mode h-layer MULTIPLY-MODE)
(gimp-layer-add-mask v-layer v-mask)
(gimp-selection-all vm-img)
(gimp-edit-copy vm-layer)
(gimp-image-delete vm-img)
(gimp-floating-sel-anchor (car (gimp-edit-paste v-mask FALSE)))
(gimp-layer-set-opacity v-layer thread-intensity)
(gimp-layer-set-mode v-layer MULTIPLY-MODE)
; Uncomment this if you want to keep the weaving mask image
; (gimp-display-new (car (gimp-image-duplicate w-img)))
(list w-img
(car (gimp-image-flatten w-img)))))
; The main weave function
(define (script-fu-weave img
drawable
ribbon-width
ribbon-spacing
shadow-darkness
shadow-depth
thread-length
thread-density
thread-intensity)
(let* ((d-img (car (gimp-drawable-get-image drawable)))
(d-width (car (gimp-drawable-width drawable)))
(d-height (car (gimp-drawable-height drawable)))
(d-offsets (gimp-drawable-offsets drawable))
(weaving (create-complete-weave d-width
d-height
ribbon-width
ribbon-spacing
shadow-darkness
shadow-depth
thread-length
thread-density
thread-intensity))
(w-img (car weaving))
(w-layer (cadr weaving)))
(gimp-context-push)
(gimp-selection-all w-img)
(gimp-edit-copy w-layer)
(gimp-image-delete w-img)
(let ((floating-sel (car (gimp-edit-paste drawable FALSE))))
(gimp-layer-set-offsets floating-sel
(car d-offsets)
(cadr d-offsets))
(gimp-layer-set-mode floating-sel MULTIPLY-MODE)
(gimp-floating-sel-to-layer floating-sel))
(gimp-displays-flush)
(gimp-context-pop)))
(script-fu-register "script-fu-weave"
_"_Weave..."
"Weave effect like Alien Skin"
"Federico Mena Quintero"
"Federico Mena Quintero"
"June 1997"
"RGB* GRAY*"
SF-IMAGE "Image to Weave" 0
SF-DRAWABLE "Drawable to Weave" 0
SF-ADJUSTMENT _"Ribbon width" '(30 0 256 1 10 1 1)
SF-ADJUSTMENT _"Ribbon spacing" '(10 0 256 1 10 1 1)
SF-ADJUSTMENT _"Shadow darkness" '(75 0 100 1 10 1 1)
SF-ADJUSTMENT _"Shadow depth" '(75 0 100 1 10 1 1)
SF-ADJUSTMENT _"Thread length" '(200 0 256 1 10 1 1)
SF-ADJUSTMENT _"Thread density" '(50 0 100 1 10 1 1)
SF-ADJUSTMENT _"Thread intensity" '(100 0 100 1 10 1 1))
(script-fu-menu-register "script-fu-weave"
_"<Image>/Script-Fu/Alchemy")
|
