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Diffstat (limited to '')
| -rw-r--r-- | plug-ins/script-fu/scripts/chrome-it.scm | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/plug-ins/script-fu/scripts/chrome-it.scm b/plug-ins/script-fu/scripts/chrome-it.scm new file mode 100644 index 0000000..761ac47 --- /dev/null +++ b/plug-ins/script-fu/scripts/chrome-it.scm @@ -0,0 +1,252 @@ +; CHROME-IT +; State of the art chrome effect for user-specified mask +; This script requires a grayscale image containing a single layer. +; This layer is used as the mask for the SOTA chrome effect + +(define (script-fu-sota-chrome-it mask-img mask-drawable chrome-saturation + chrome-lightness chrome-factor env-map hc cc carve-white) + + (define (set-pt a index x y) + (begin + (aset a (* index 2) x) + (aset a (+ (* index 2) 1) y) + ) + ) + + (define (spline-chrome-it) + (let* ((a (cons-array 18 'double))) + (set-pt a 0 0.0 0.0) + (set-pt a 1 0.125 0.9216) + (set-pt a 2 0.25 0.0902) + (set-pt a 3 0.375 0.9020) + (set-pt a 4 0.5 0.0989) + (set-pt a 5 0.625 0.9549) + (set-pt a 6 0.75 00784) + (set-pt a 7 0.875 0.9412) + (set-pt a 8 1.0 0.1216) + a + ) + ) + + + (define (shadows val) + (/ (* 0.96 val) 2.55) + ) + + (define (midtones val) + (/ val 2.55) + ) + + (define (highlights val) + ; The result is used as "gimp-drawable-color-balance" color parameter + ; and thus must be restricted to -100.0 <= highlights <= 100.0. + (min (/ (* 1.108 val) 2.55) 100.0) + ) + + (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-chrome-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 source-drawable) + (let ( + (floating-sel (car (gimp-edit-paste dest-drawable FALSE))) + ) + (gimp-floating-sel-anchor floating-sel) + ) + ) + + (let* ( + (banding-img (car (gimp-file-load RUN-NONINTERACTIVE 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))) + (width (car (gimp-drawable-width mask-drawable))) + (height (car (gimp-drawable-height mask-drawable))) + (img (car (gimp-image-new width height GRAY))) + (size (min width height)) + (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)) + (brush-size (sota-scale size 0.5 chrome-factor)) + (brush-name (car (gimp-brush-new "Chrome It"))) + (mask (car (gimp-channel-new img width height "Chrome Stencil" 50 '(0 0 0)))) + (bg-layer (car (gimp-layer-new img width height GRAY-IMAGE _"Background" 100 LAYER-MODE-NORMAL))) + (layer1 (car (gimp-layer-new img banding-width banding-height banding-type _"Layer 1" 100 LAYER-MODE-NORMAL))) + (layer2 (car (gimp-layer-new img width height GRAYA-IMAGE _"Layer 2" 100 LAYER-MODE-DIFFERENCE))) + (layer3 (car (gimp-layer-new img width height GRAYA-IMAGE _"Layer 3" 100 LAYER-MODE-NORMAL))) + (shadow (car (gimp-layer-new img width height GRAYA-IMAGE _"Drop Shadow" 100 LAYER-MODE-NORMAL))) + (mask-fs 0) + (layer-mask 0) + ) + + (gimp-context-push) + (gimp-context-set-defaults) + + (gimp-image-undo-disable img) + + (gimp-image-insert-channel img mask -1 0) + (gimp-image-insert-layer img bg-layer 0 0) + (gimp-image-insert-layer img shadow 0 0) + (gimp-image-insert-layer img layer3 0 0) + (gimp-image-insert-layer img layer2 0 0) + + (gimp-edit-copy mask-drawable) + (set! mask-fs (car (gimp-edit-paste mask FALSE))) + (gimp-floating-sel-anchor mask-fs) + (if (= carve-white FALSE) + (gimp-drawable-invert mask FALSE) + ) + + (gimp-context-set-background '(255 255 255)) + (gimp-selection-none img) + (gimp-drawable-edit-fill layer2 FILL-BACKGROUND) + (gimp-drawable-edit-fill layer3 FILL-BACKGROUND) + (gimp-drawable-edit-clear shadow) + + (gimp-item-set-visible bg-layer FALSE) + (gimp-item-set-visible shadow FALSE) + + (gimp-image-select-item img CHANNEL-OP-REPLACE mask) + (gimp-context-set-background '(0 0 0)) + (gimp-selection-translate img offx1 offy1) + (gimp-selection-feather img feather) + (gimp-drawable-edit-fill layer2 FILL-BACKGROUND) + (gimp-selection-translate img (* 2 offx2) (* 2 offy2)) + (gimp-drawable-edit-fill layer3 FILL-BACKGROUND) + (gimp-selection-none img) + (set! layer2 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE))) + (gimp-drawable-invert layer2 FALSE) + + (gimp-image-insert-layer img layer1 0 0) + (copy-layer-chrome-it 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-drawable-curves-spline layer1 HISTOGRAM-VALUE 18 (spline-chrome-it)) + + (set! layer-mask (car (gimp-layer-create-mask layer1 ADD-MASK-BLACK))) + (gimp-layer-add-mask layer1 layer-mask) + (gimp-image-select-item img CHANNEL-OP-REPLACE mask) + (gimp-context-set-background '(255 255 255)) + (gimp-drawable-edit-fill layer-mask FILL-BACKGROUND) + + (set! layer2 (car (gimp-layer-copy layer1 TRUE))) + (gimp-image-insert-layer img layer2 0 0) + + (gimp-brush-set-shape brush-name BRUSH-GENERATED-CIRCLE) + (gimp-brush-set-spikes brush-name 2) + (gimp-brush-set-hardness brush-name 1.0) + (gimp-brush-set-spacing brush-name 25) + (gimp-brush-set-aspect-ratio brush-name 1) + (gimp-brush-set-angle brush-name 0) + (cond (<= brush-size 17) (gimp-brush-set-radius brush-name (\ brush-size 2)) + (else gimp-brush-set-radius brush-name (\ 19 2))) + (gimp-context-set-brush brush-name) + + (gimp-context-set-foreground '(255 255 255)) + (gimp-drawable-edit-stroke-selection layer-mask) + + (gimp-context-set-background '(0 0 0)) + (gimp-selection-feather img (* feather 1.5)) + (gimp-selection-translate img (* 2.5 offx1) (* 2.5 offy1)) + (gimp-drawable-edit-fill shadow FILL-BACKGROUND) + + (gimp-selection-all img) + (gimp-context-set-pattern "Marble #1") + (gimp-drawable-edit-fill bg-layer FILL-PATTERN) + (gimp-selection-none img) + + (gimp-image-convert-rgb img) + + (gimp-drawable-color-balance layer1 TRANSFER-SHADOWS TRUE + (shadows (rval hc)) + (shadows (gval hc)) + (shadows (bval hc))) + (gimp-drawable-color-balance layer1 TRANSFER-MIDTONES TRUE + (midtones (rval hc)) + (midtones (gval hc)) + (midtones (bval hc))) + (gimp-drawable-color-balance layer1 TRANSFER-HIGHLIGHTS TRUE + (highlights (rval hc)) + (highlights (gval hc)) + (highlights (bval hc))) + + (gimp-drawable-color-balance layer2 TRANSFER-SHADOWS TRUE + (shadows (rval cc)) + (shadows (gval cc)) + (shadows (bval cc))) + (gimp-drawable-color-balance layer2 TRANSFER-MIDTONES TRUE + (midtones (rval cc)) + (midtones (gval cc)) + (midtones (bval cc))) + (gimp-drawable-color-balance layer2 TRANSFER-HIGHLIGHTS TRUE + (highlights (rval cc)) + (highlights (gval cc)) + (highlights (bval cc))) + (gimp-drawable-hue-saturation layer2 HUE-RANGE-ALL + 0.0 + chrome-lightness + chrome-saturation + 0.0) + + (gimp-item-set-visible shadow TRUE) + (gimp-item-set-visible bg-layer TRUE) + + (gimp-item-set-name layer2 _"Chrome") + (gimp-item-set-name layer1 _"Highlight") + + (gimp-image-remove-channel img mask) + + (gimp-brush-delete brush-name) + + (gimp-display-new img) + (gimp-image-undo-enable img) + + (gimp-context-pop) + ) +) + +(script-fu-register "script-fu-sota-chrome-it" + _"Stencil C_hrome..." + _"Add a chrome effect to the selected region (or alpha) using a specified (grayscale) stencil" + "Spencer Kimball" + "Spencer Kimball" + "1997" + "GRAY" + SF-IMAGE "Chrome image" 0 + SF-DRAWABLE "Chrome mask" 0 + SF-ADJUSTMENT _"Chrome saturation" '(-80 -100 100 1 10 0 0) + SF-ADJUSTMENT _"Chrome lightness" '(-47 -100 100 1 10 0 0) + SF-ADJUSTMENT _"Chrome factor" '(0.75 0 1 0.1 0.01 2 0) + SF-FILENAME _"Environment map" + (string-append gimp-data-directory + "/scripts/images/beavis.jpg") + SF-COLOR _"Highlight balance" '(211 95 0) + SF-COLOR _"Chrome balance" "black" + SF-TOGGLE _"Chrome white areas" TRUE +) + +(script-fu-menu-register "script-fu-sota-chrome-it" + "<Image>/Filters/Decor") |