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crystal-logo.scm
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2009-12-15
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8KB
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228 lines
; CRYSTAL
; Create a text effect that simulates crystal
(define (script-fu-crystal-logo chrome-factor text size font bg-img env-map)
(define (set-pt a index x y)
(begin
(aset a (* index 2) x)
(aset a (+ (* index 2) 1) y)
)
)
(define (spline1)
(let* ((a (cons-array 18 'byte)))
(set-pt a 0 0 0)
(set-pt a 1 31 235)
(set-pt a 2 63 23)
(set-pt a 3 95 230)
(set-pt a 4 127 25)
(set-pt a 5 159 210)
(set-pt a 6 191 20)
(set-pt a 7 223 240)
(set-pt a 8 255 31)
a
)
)
(define (crystal-brush brush-size)
(cond ((<= brush-size 5) "Circle (05)")
((<= brush-size 7) "Circle (07)")
((<= brush-size 9) "Circle (09)")
((<= brush-size 11) "Circle (11)")
((<= brush-size 13) "Circle (13)")
((<= brush-size 15) "Circle (15)")
((<= brush-size 17) "Circle (17)")
((> brush-size 17) "Circle Fuzzy (19)")
)
)
(define (shadows val)
(/ (* 0.96 val) 2.55)
)
(define (midtones val)
(/ val 2.55)
)
(define (highlights val)
(/ (* 1.108 val) 2.55)
)
(define (rval col)
(car col)
)
(define (gval col)
(cadr col)
)
(define (bval col)
(caddr col)
)
(define (sota-scale val scale chrome-factor)
(* (sqrt val) (* scale chrome-factor))
)
(define (copy-layer-crystal dest-image dest-drawable source-image source-drawable)
(gimp-selection-all dest-image)
(gimp-edit-clear dest-drawable)
(gimp-selection-none dest-image)
(gimp-selection-all source-image)
(gimp-edit-copy source-drawable)
(let ((floating-sel (car (gimp-edit-paste dest-drawable FALSE))))
(gimp-floating-sel-anchor floating-sel)
)
)
(let* (
(img (car (gimp-image-new 256 256 GRAY)))
(back-img (car (gimp-file-load 1 bg-img bg-img)))
(back-layer (car (gimp-image-get-active-drawable back-img)))
(banding-img (car (gimp-file-load 1 env-map env-map)))
(banding-layer (car (gimp-image-get-active-drawable banding-img)))
(banding-height (car (gimp-drawable-height banding-layer)))
(banding-width (car (gimp-drawable-width banding-layer)))
(banding-type (car (gimp-drawable-type banding-layer)))
(b-size (sota-scale size 2 chrome-factor))
(offx1 (sota-scale size 0.33 chrome-factor))
(offy1 (sota-scale size 0.25 chrome-factor))
(offx2 (sota-scale size (- 0.33) chrome-factor))
(offy2 (sota-scale size (- 0.25) chrome-factor))
(feather (sota-scale size 0.5 chrome-factor))
(blur (sota-scale size 0.5 chrome-factor))
(displace (sota-scale size 0.25 chrome-factor))
(brush-size (sota-scale size 0.5 chrome-factor))
(text-layer (car (gimp-text-fontname img -1 0 0 text b-size TRUE size PIXELS font)))
(width (car (gimp-drawable-width text-layer)))
(height (car (gimp-drawable-height text-layer)))
(tile-ret (plug-in-tile RUN-NONINTERACTIVE back-img back-layer width height TRUE))
(tile-img (car tile-ret))
(tile-layer (cadr tile-ret))
(tile-width (car (gimp-drawable-width tile-layer)))
(tile-height (car (gimp-drawable-height tile-layer)))
(tile-type (car (gimp-drawable-type tile-layer)))
(bg-layer (car (gimp-layer-new img tile-width tile-height tile-type "BG-Layer" 100 NORMAL-MODE)))
(layer1 (car (gimp-layer-new img banding-width banding-height banding-type "Layer1" 100 NORMAL-MODE)))
(layer2 (car (gimp-layer-new img width height GRAYA-IMAGE "Layer 2" 100 DIFFERENCE-MODE)))
(layer3 (car (gimp-layer-new img width height GRAYA-IMAGE "Layer 3" 100 NORMAL-MODE)))
(layer-mask 0)
(layer-mask2 0)
(disp-map 0)
)
(gimp-context-push)
(gimp-image-delete back-img)
(gimp-image-undo-disable img)
(gimp-image-resize img width height 0 0)
(gimp-image-add-layer img layer3 0)
(gimp-image-add-layer img layer2 0)
(gimp-context-set-background '(255 255 255))
(gimp-selection-none img)
(gimp-edit-fill layer2 BACKGROUND-FILL)
(gimp-edit-fill layer3 BACKGROUND-FILL)
(gimp-drawable-set-visible text-layer FALSE)
(gimp-selection-layer-alpha text-layer)
(gimp-context-set-background '(0 0 0))
(gimp-selection-translate img offx1 offy1)
(gimp-selection-feather img feather)
(gimp-edit-fill layer2 BACKGROUND-FILL)
(gimp-selection-translate img (* 2 offx2) (* 2 offy2))
(gimp-edit-fill layer3 BACKGROUND-FILL)
(gimp-selection-none img)
(set! layer2 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)))
(gimp-invert layer2)
(gimp-image-add-layer img layer1 0)
(copy-layer-crystal img layer1 banding-img banding-layer)
(gimp-image-delete banding-img)
(gimp-layer-scale layer1 width height FALSE)
(plug-in-gauss-iir RUN-NONINTERACTIVE img layer1 10 TRUE TRUE)
(gimp-layer-set-opacity layer1 50)
(set! layer1 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)))
(gimp-curves-spline layer1 0 18 (spline1))
(set! layer-mask (car (gimp-layer-create-mask layer1 ADD-BLACK-MASK)))
(gimp-layer-add-mask layer1 layer-mask)
(gimp-selection-layer-alpha text-layer)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill layer-mask BACKGROUND-FILL)
(set! disp-map (car (gimp-selection-save img)))
(gimp-context-set-brush (crystal-brush brush-size))
(gimp-context-set-foreground '(0 0 0))
(gimp-edit-stroke disp-map)
(gimp-selection-none img)
(plug-in-gauss-rle RUN-NONINTERACTIVE img disp-map blur TRUE TRUE)
(gimp-levels disp-map 0 0 255 1.0 96 255)
(if (= (car (gimp-drawable-is-rgb bg-layer)) 1)
(gimp-image-convert-rgb img))
(gimp-image-add-layer img bg-layer 2)
(copy-layer-crystal img bg-layer tile-img tile-layer)
(gimp-image-delete tile-img)
(set! layer2 (car (gimp-layer-copy bg-layer TRUE)))
(gimp-image-add-layer img layer2 1)
(plug-in-displace RUN-NONINTERACTIVE img layer2 displace displace TRUE TRUE disp-map disp-map 0)
(set! layer-mask2 (car (gimp-layer-create-mask layer2 ADD-BLACK-MASK)))
(gimp-layer-add-mask layer2 layer-mask2)
(gimp-selection-layer-alpha text-layer)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill layer-mask2 BACKGROUND-FILL)
(gimp-selection-none img)
(gimp-levels layer2 0 0 200 1.5 50 255)
(gimp-layer-set-mode layer1 OVERLAY-MODE)
(plug-in-gauss-rle RUN-NONINTERACTIVE img text-layer blur TRUE TRUE)
(gimp-layer-set-lock-alpha text-layer TRUE)
(gimp-context-set-background '(0 0 0))
(gimp-edit-fill text-layer BACKGROUND-FILL)
(gimp-layer-set-mode text-layer OVERLAY-MODE)
(gimp-layer-translate text-layer offx1 offy1)
(gimp-image-remove-channel img disp-map)
(gimp-drawable-set-visible text-layer TRUE)
(gimp-drawable-set-name layer1 "Crystal")
(gimp-drawable-set-name layer2 "Interior")
(gimp-drawable-set-name bg-layer "Background")
(gimp-drawable-set-name text-layer "Shadow")
(gimp-image-undo-enable img)
(gimp-display-new img)
(gimp-context-pop)
)
)
(script-fu-register "script-fu-crystal-logo"
_"Crystal..."
_"Create a logo with a crystal/gel effect displacing the image underneath"
"Spencer Kimball"
"Spencer Kimball"
"1997"
""
SF-ADJUSTMENT _"Chrome factor" '(1.0 0.2 4 0.1 1 1 0)
SF-STRING _"Text" "Crystal"
SF-ADJUSTMENT _"Font size (pixels)" '(150 2 1000 1 10 0 1)
SF-FONT _"Font" "Engraver"
SF-FILENAME _"Background image"
(string-append gimp-data-directory
"/scripts/images/texture1.jpg")
SF-FILENAME _"Environment map"
(string-append gimp-data-directory
"/scripts/images/beavis.jpg")
)
(script-fu-menu-register "script-fu-crystal-logo"
"<Image>/File/Create/Logos")