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carved-logo.scm
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2009-12-15
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; CARVE-TEXT
; Carving, embossing, & stamping
; Process taken from "The Photoshop 3 WOW! Book"
; http://www.peachpit.com
(define (carve-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 (19)")))
(define (carve-scale val scale)
(* (sqrt val) scale))
(define (calculate-inset-gamma img layer)
(let* ((stats (gimp-histogram layer 0 0 255))
(mean (car stats)))
(cond ((< mean 127) (+ 1.0 (* 0.5 (/ (- 127 mean) 127.0))))
((>= mean 127) (- 1.0 (* 0.5 (/ (- mean 127) 127.0)))))))
(define (script-fu-carved-logo text size font bg-img carve-raised padding)
(let* (
(img (car (gimp-file-load 1 bg-img bg-img)))
(offx (carve-scale size 0.33))
(offy (carve-scale size 0.25))
(feather (carve-scale size 0.3))
(brush-size (carve-scale size 0.3))
(b-size (+ (carve-scale size 0.5) padding))
(layer1 (car (gimp-image-get-active-drawable img)))
(mask-layer (car (gimp-text-fontname img -1 0 0 text b-size TRUE size PIXELS font)))
(width (car (gimp-drawable-width mask-layer)))
(height (car (gimp-drawable-height mask-layer)))
(mask-fs 0)
(mask (car (gimp-channel-new img width height "Engraving Mask" 50 '(0 0 0))))
(inset-gamma (calculate-inset-gamma img layer1))
(mask-fat 0)
(mask-emboss 0)
(mask-highlight 0)
(mask-shadow 0)
(shadow-layer 0)
(highlight-layer 0)
(cast-shadow-layer 0)
(csl-mask 0)
(inset-layer 0)
(il-mask 0)
)
(gimp-context-push)
(gimp-image-undo-disable img)
(gimp-image-set-filename img "")
(gimp-image-add-channel img mask 0)
(gimp-layer-set-lock-alpha mask-layer TRUE)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill mask-layer BACKGROUND-FILL)
(gimp-context-set-background '(0 0 0))
(gimp-edit-fill mask BACKGROUND-FILL)
(plug-in-tile RUN-NONINTERACTIVE img layer1 width height FALSE)
(gimp-edit-copy mask-layer)
(set! mask-fs (car (gimp-edit-paste mask FALSE)))
(gimp-floating-sel-anchor mask-fs)
(if (= carve-raised TRUE)
(gimp-invert mask)
)
(gimp-image-remove-layer img mask-layer)
(set! mask-fat (car (gimp-channel-copy mask)))
(gimp-image-add-channel img mask-fat 0)
(gimp-selection-load mask-fat)
(gimp-context-set-brush (carve-brush brush-size))
(gimp-context-set-foreground '(255 255 255))
(gimp-edit-stroke mask-fat)
(gimp-selection-none img)
(set! mask-emboss (car (gimp-channel-copy mask-fat)))
(gimp-image-add-channel img mask-emboss 0)
(plug-in-gauss-rle RUN-NONINTERACTIVE img mask-emboss feather TRUE TRUE)
(plug-in-emboss RUN-NONINTERACTIVE img mask-emboss 315.0 45.0 7 TRUE)
(gimp-context-set-background '(180 180 180))
(gimp-selection-load mask-fat)
(gimp-selection-invert img)
(gimp-edit-fill mask-emboss BACKGROUND-FILL)
(gimp-selection-load mask)
(gimp-edit-fill mask-emboss BACKGROUND-FILL)
(gimp-selection-none img)
(set! mask-highlight (car (gimp-channel-copy mask-emboss)))
(gimp-image-add-channel img mask-highlight 0)
(gimp-levels mask-highlight 0 180 255 1.0 0 255)
(set! mask-shadow mask-emboss)
(gimp-levels mask-shadow 0 0 180 1.0 0 255)
(gimp-edit-copy mask-shadow)
(set! shadow-layer (car (gimp-edit-paste layer1 FALSE)))
(gimp-floating-sel-to-layer shadow-layer)
(gimp-layer-set-mode shadow-layer MULTIPLY-MODE)
(gimp-edit-copy mask-highlight)
(set! highlight-layer (car (gimp-edit-paste shadow-layer FALSE)))
(gimp-floating-sel-to-layer highlight-layer)
(gimp-layer-set-mode highlight-layer SCREEN-MODE)
(gimp-edit-copy mask)
(set! cast-shadow-layer (car (gimp-edit-paste highlight-layer FALSE)))
(gimp-floating-sel-to-layer cast-shadow-layer)
(gimp-layer-set-mode cast-shadow-layer MULTIPLY-MODE)
(gimp-layer-set-opacity cast-shadow-layer 75)
(plug-in-gauss-rle RUN-NONINTERACTIVE img cast-shadow-layer feather TRUE TRUE)
(gimp-layer-translate cast-shadow-layer offx offy)
(set! csl-mask (car (gimp-layer-create-mask cast-shadow-layer ADD-BLACK-MASK)))
(gimp-layer-add-mask cast-shadow-layer csl-mask)
(gimp-selection-load mask)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill csl-mask BACKGROUND-FILL)
(set! inset-layer (car (gimp-layer-copy layer1 TRUE)))
(gimp-image-add-layer img inset-layer 1)
(set! il-mask (car (gimp-layer-create-mask inset-layer ADD-BLACK-MASK)))
(gimp-layer-add-mask inset-layer il-mask)
(gimp-selection-load mask)
(gimp-context-set-background '(255 255 255))
(gimp-edit-fill il-mask BACKGROUND-FILL)
(gimp-selection-none img)
(gimp-levels inset-layer 0 0 255 inset-gamma 0 255)
(gimp-image-remove-channel img mask)
(gimp-image-remove-channel img mask-fat)
(gimp-image-remove-channel img mask-highlight)
(gimp-image-remove-channel img mask-shadow)
(gimp-drawable-set-name layer1 "Carved Surface")
(gimp-drawable-set-name shadow-layer "Bevel Shadow")
(gimp-drawable-set-name highlight-layer "Bevel Highlight")
(gimp-drawable-set-name cast-shadow-layer "Cast Shadow")
(gimp-drawable-set-name inset-layer "Inset")
(gimp-display-new img)
(gimp-image-undo-enable img)
(gimp-context-pop)
)
)
(script-fu-register "script-fu-carved-logo"
_"Carved..."
_"Create a logo with text raised above or carved in to the specified background image"
"Spencer Kimball"
"Spencer Kimball"
"1997"
""
SF-STRING _"Text" "Marble"
SF-ADJUSTMENT _"Font size (pixels)" '(100 2 1000 1 10 0 1)
SF-FONT _"Font" "Engraver"
SF-FILENAME _"Background Image"
(string-append gimp-data-directory
"/scripts/images/texture3.jpg")
SF-TOGGLE _"Carve raised text" FALSE
SF-ADJUSTMENT _"Padding around text" '(10 0 1000 1 10 0 1)
)
(script-fu-menu-register "script-fu-carved-logo"
"<Image>/File/Create/Logos")