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gimp/plug-ins/script-fu/scripts/carve-it.scm
Jehan e125c30cfd Issue #12771: (gimp-layer-new) is missing. 
The libgimp wrapper was just calling the PDB procedure. Get rid of the
wrapper and make the PDB proc public. Also reorder the name argument to
be in the second place, just like it was for the wrapper.
2025-01-20 20:55:48 +01:00

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; CARVE-IT
; Carving, embossing, & stamping
; Process taken from "The Photoshop 3 WOW! Book"
; http://www.peachpit.com
; This script requires a grayscale image containing a single layer.
; This layer is used as the mask for the carving effect
; NOTE: This script requires the image to be carved to either be an
; RGB color or grayscale image with a single layer. An indexed file
; can not be used due to the use of gimp-drawable-histogram and
; gimp-drawable-levels.
(define (carve-scale val scale)
(* (sqrt val) scale))
(define (calculate-inset-gamma img layer)
(let* ((stats (gimp-drawable-histogram layer 0 0.0 1.0))
(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 (copy-layer-carve-it dest-image dest-drawable source-image source-drawable)
(gimp-selection-all dest-image)
(gimp-drawable-edit-clear dest-drawable)
(gimp-selection-none dest-image)
(gimp-selection-all source-image)
(gimp-edit-copy (vector source-drawable))
(let* (
(pasted (car (gimp-edit-paste dest-drawable FALSE)))
(floating-sel (vector-ref pasted (- (vector-length pasted) 1)))
)
(gimp-floating-sel-anchor floating-sel)
)
)
(define (script-fu-carve-it bg-img bg-layers mask-img mask-drawable carve-white)
(let* (
(src-layer (vector-ref bg-layers 0))
(width (car (gimp-drawable-get-width mask-drawable)))
(height (car (gimp-drawable-get-height mask-drawable)))
(type (car (gimp-drawable-type src-layer)))
(img (car (gimp-image-new width height (cond ((= type RGB-IMAGE) RGB)
((= type RGBA-IMAGE) RGB)
((= type GRAY-IMAGE) GRAY)
((= type GRAYA-IMAGE) GRAY)
((= type INDEXED-IMAGE) INDEXED)
((= type INDEXEDA-IMAGE) INDEXED)))))
(size (min width height))
(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))
(brush (car (gimp-brush-new "Carve It")))
(mask (car (gimp-channel-new img "Engraving Mask" width height 50 '(0 0 0))))
(inset-gamma (calculate-inset-gamma (car (gimp-item-get-image src-layer)) src-layer))
(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)
(bg-width (car (gimp-drawable-get-width src-layer)))
(bg-height (car (gimp-drawable-get-height src-layer)))
(bg-type (car (gimp-drawable-type src-layer)))
(bg-image (car (gimp-item-get-image src-layer)))
(layer1 (car (gimp-layer-new img "Layer1" bg-width bg-height bg-type 100 LAYER-MODE-NORMAL)))
)
(gimp-context-push)
(gimp-context-set-defaults)
(gimp-image-undo-disable img)
(gimp-image-insert-layer img layer1 0 0)
(gimp-selection-all img)
(gimp-drawable-edit-clear layer1)
(gimp-selection-none img)
(copy-layer-carve-it img layer1 bg-image src-layer)
(gimp-edit-copy (vector mask-drawable))
(gimp-image-insert-channel img mask -1 0)
(plug-in-tile RUN-NONINTERACTIVE img (vector layer1) width height FALSE)
(let* (
(pasted (car (gimp-edit-paste mask FALSE)))
(floating-sel (vector-ref pasted(- (vector-length pasted) 1)))
)
(gimp-floating-sel-anchor floating-sel)
)
(if (= carve-white FALSE)
(gimp-drawable-invert mask FALSE))
(set! mask-fat (car (gimp-channel-copy mask)))
(gimp-image-insert-channel img mask-fat -1 0)
(gimp-image-select-item img CHANNEL-OP-REPLACE mask-fat)
(gimp-brush-set-shape brush BRUSH-GENERATED-CIRCLE)
(gimp-brush-set-spikes brush 2)
(gimp-brush-set-hardness brush 1.0)
(gimp-brush-set-spacing brush 25)
(gimp-brush-set-aspect-ratio brush 1)
(gimp-brush-set-angle brush 0)
(cond (<= brush-size 17) (gimp-brush-set-radius brush (\ brush-size 2))
(else gimp-brush-set-radius brush (\ 19 2)))
(gimp-context-set-brush brush)
(gimp-context-set-foreground '(255 255 255))
(gimp-drawable-edit-stroke-selection mask-fat)
(gimp-selection-none img)
(set! mask-emboss (car (gimp-channel-copy mask-fat)))
(gimp-image-insert-channel img mask-emboss -1 0)
(gimp-drawable-merge-new-filter mask-emboss "gegl:gaussian-blur" 0 LAYER-MODE-REPLACE 1.0 "std-dev-x" (* 0.32 feather) "std-dev-y" (* 0.32 feather) "filter" "auto")
(gimp-drawable-merge-new-filter mask-emboss "gegl:emboss" 0 LAYER-MODE-REPLACE 1.0 "azimuth" 315.0 "elevation" 45.0 "depth" 7 "type" "emboss")
(gimp-context-set-background '(180 180 180))
(gimp-image-select-item img CHANNEL-OP-REPLACE mask-fat)
(gimp-selection-invert img)
(gimp-drawable-edit-fill mask-emboss FILL-BACKGROUND)
(gimp-image-select-item img CHANNEL-OP-REPLACE mask)
(gimp-drawable-edit-fill mask-emboss FILL-BACKGROUND)
(gimp-selection-none img)
(set! mask-highlight (car (gimp-channel-copy mask-emboss)))
(gimp-image-insert-channel img mask-highlight -1 0)
(gimp-drawable-levels mask-highlight 0
0.7056 1.0 TRUE
1.0
0.0 1.0 TRUE)
(set! mask-shadow mask-emboss)
(gimp-drawable-levels mask-shadow 0
0.0 0.70586 TRUE
1.0
0.0 1.0 TRUE)
(gimp-edit-copy (vector mask-shadow))
(let* (
(pasted (car (gimp-edit-paste layer1 FALSE)))
(floating-sel (vector-ref pasted (- (vector-length pasted) 1)))
)
(set! shadow-layer floating-sel)
(gimp-floating-sel-to-layer shadow-layer)
)
(gimp-layer-set-mode shadow-layer LAYER-MODE-MULTIPLY)
(gimp-edit-copy (vector mask-highlight))
(let* (
(pasted (car (gimp-edit-paste shadow-layer FALSE)))
(floating-sel (vector-ref pasted (- (vector-length pasted) 1)))
)
(set! highlight-layer floating-sel)
(gimp-floating-sel-to-layer highlight-layer)
)
(gimp-layer-set-mode highlight-layer LAYER-MODE-SCREEN)
(gimp-edit-copy (vector mask))
(let* (
(pasted (car (gimp-edit-paste highlight-layer FALSE)))
(floating-sel (vector-ref pasted (- (vector-length pasted) 1)))
)
(set! cast-shadow-layer floating-sel)
(gimp-floating-sel-to-layer cast-shadow-layer)
)
(gimp-layer-set-mode cast-shadow-layer LAYER-MODE-MULTIPLY)
(gimp-layer-set-opacity cast-shadow-layer 75)
(gimp-drawable-merge-new-filter cast-shadow-layer "gegl:gaussian-blur" 0 LAYER-MODE-REPLACE 1.0 "std-dev-x" (* 0.32 feather) "std-dev-y" (* 0.32 feather) "filter" "auto")
(gimp-item-transform-translate cast-shadow-layer offx offy)
(set! csl-mask (car (gimp-layer-create-mask cast-shadow-layer ADD-MASK-BLACK)))
(gimp-layer-add-mask cast-shadow-layer csl-mask)
(gimp-image-select-item img CHANNEL-OP-REPLACE mask)
(gimp-context-set-background '(255 255 255))
(gimp-drawable-edit-fill csl-mask FILL-BACKGROUND)
(set! inset-layer (car (gimp-layer-copy layer1 TRUE)))
(gimp-image-insert-layer img inset-layer 0 1)
(set! il-mask (car (gimp-layer-create-mask inset-layer ADD-MASK-BLACK)))
(gimp-layer-add-mask inset-layer il-mask)
(gimp-image-select-item img CHANNEL-OP-REPLACE mask)
(gimp-context-set-background '(255 255 255))
(gimp-drawable-edit-fill il-mask FILL-BACKGROUND)
(gimp-selection-none img)
(gimp-selection-none bg-image)
(gimp-drawable-levels inset-layer 0 0.0 1.0 TRUE inset-gamma 0.0 1.0 TRUE)
(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-item-set-name layer1 _"Carved Surface")
(gimp-item-set-name shadow-layer _"Bevel Shadow")
(gimp-item-set-name highlight-layer _"Bevel Highlight")
(gimp-item-set-name cast-shadow-layer _"Cast Shadow")
(gimp-item-set-name inset-layer _"Inset")
(gimp-resource-delete brush)
(gimp-display-new img)
(gimp-image-undo-enable img)
(gimp-context-pop)
)
)
(script-fu-register-filter "script-fu-carve-it"
_"Stencil C_arve..."
_"Use the specified drawable as a stencil to carve from the specified image."
"Spencer Kimball"
"Spencer Kimball"
"1997"
"GRAY"
SF-ONE-OR-MORE-DRAWABLE
SF-IMAGE "Mask image" 0
SF-DRAWABLE _"Mask drawable" 0
SF-TOGGLE _"Carve white areas" TRUE
)
(script-fu-menu-register "script-fu-carve-it"
"<Image>/Filters/Decor")
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