gimp/plug-ins/script-fu/scripts/swirltile.scm

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;
; Swirl-tile
; produces a (hope-fully) seamlessly tiling swirling effect
;
; Adrian Likins <aklikins@eos.ncsu.edu>
;
; http://www4.ncsu.edu/eos/users/a/aklikins/pub/gimp/
;
(define (script-fu-swirl-tile depth azimuth elevation blurRadius height width whirl-amount noise-level bg-color)
(let* ((img (car (gimp-image-new width height RGB)))
(layer-one (car (gimp-layer-new img width height RGB "TEST" 100 NORMAL)))
(cx (/ width 2))
(cy (/ height 2))
(old-bg (car (gimp-palette-get-background))))
(gimp-image-disable-undo img)
(gimp-palette-set-background bg-color)
(gimp-edit-fill layer-one)
(gimp-image-add-layer img layer-one 0)
(plug-in-noisify 1 img layer-one FALSE noise-level noise-level noise-level 1.0)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(gimp-channel-ops-offset layer-one TRUE 0 cx cy)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(plug-in-whirl-pinch 1 img layer-one whirl-amount 0.0 1.0)
(plug-in-gauss-rle 1 img layer-one blurRadius TRUE TRUE)
(plug-in-bump-map 1 img layer-one layer-one azimuth elevation depth 0 0 0 0 FALSE FALSE 0)
(gimp-display-new img)
(gimp-image-enable-undo img)))
(script-fu-register "script-fu-swirl-tile"
"<Toolbox>/Xtns/Script-Fu/Patterns/Swirl-Tile"
"Create an interesting swirled tile"
"Adrian Likins <aklikins@eos.ncsu.edu>"
"Adrian Likins"
"1997"
""
SF-ADJUSTMENT "Depth" '(10 0 64 1 1 0 0)
SF-ADJUSTMENT "Azimuth" '(135 0 360 1 10 0 0)
SF-ADJUSTMENT "Elevation" '(45 0 90 1 10 0 0)
SF-ADJUSTMENT "Blur Radius" '(3 0 128 1 10 0 0)
SF-ADJUSTMENT "Height" '(256 0 1024 1 10 0 1)
SF-ADJUSTMENT "Width" '(256 0 1024 1 10 0 1)
SF-ADJUSTMENT "Whirl Amount" '(320 0 360 1 10 0 0)
SF-ADJUSTMENT "Roughness" '(.5 0 1 .1 .01 2 1)
SF-COLOR "Backgound Color" '(255 255 255))