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;;; unsharp-mask.scm
;;; Time-stamp: <1998/11/17 13:18:39 narazaki@gimp.org>
;;; Author: Narazaki Shuji <narazaki@gimp.org>
;;; Version 0.8
; This script-fu-unsharp-mask is not in the menus.
; There is an equivalent GEGL filter at Filters>Enhance>Sharpen (Unsharp).
; This might be kept for compatibility and used by third party scripts.
; Seems not used by any script in the repo.
; FUTURE move to gimp-data-extras or to scripts/test
; and maintain it with low priority.
; unsharp-mask is a filter AND renderer, creating a new, visible, dirty image
; from the given image.
(define (script-fu-unsharp-mask img drws mask-size mask-opacity)
(let* (
(drw (vector-ref drws 0))
(drawable-width (car (gimp-drawable-get-width drw)))
(drawable-height (car (gimp-drawable-get-height drw)))
(new-image (car (gimp-image-new drawable-width drawable-height RGB)))
(original-layer (car (gimp-layer-new new-image "Original"
drawable-width drawable-height
RGB-IMAGE
100 LAYER-MODE-NORMAL)))
(original-layer-for-darker 0)
(original-layer-for-lighter 0)
(blurred-layer-for-darker 0)
(blurred-layer-for-lighter 0)
(darker-layer 0)
(lighter-layer 0)
)
(gimp-selection-all img)
(gimp-edit-copy (vector drw))
(gimp-image-undo-disable new-image)
(gimp-image-insert-layer new-image original-layer 0 0)
(let* (
(pasted (car (gimp-edit-paste original-layer FALSE)))
(num-pasted (vector-length pasted))
(floating-sel (vector-ref pasted (- num-pasted 1)))
)
(gimp-floating-sel-anchor floating-sel)
)
(set! original-layer-for-darker (car (gimp-layer-copy original-layer)))
(gimp-layer-add-alpha original-layer-for-darker)
(set! original-layer-for-lighter (car (gimp-layer-copy original-layer)))
(gimp-layer-add-alpha original-layer-for-lighter)
(set! blurred-layer-for-darker (car (gimp-layer-copy original-layer)))
(gimp-layer-add-alpha blurred-layer-for-darker)
(gimp-item-set-visible original-layer FALSE)
(gimp-display-new new-image)
;; make darker mask
(gimp-image-insert-layer new-image blurred-layer-for-darker 0 -1)
(gimp-drawable-merge-new-filter blurred-layer-for-darker "gegl:gaussian-blur" 0 LAYER-MODE-REPLACE 1.0 "std-dev-x" (* 0.32 mask-size) "std-dev-y" (* 0.32 mask-size) "filter" "auto")
(set! blurred-layer-for-lighter
(car (gimp-layer-copy blurred-layer-for-darker)))
(gimp-layer-add-alpha blurred-layer-for-lighter)
(gimp-image-insert-layer new-image original-layer-for-darker 0 -1)
(gimp-layer-set-mode original-layer-for-darker LAYER-MODE-SUBTRACT)
(set! darker-layer
(car (gimp-image-merge-visible-layers new-image CLIP-TO-IMAGE)))
(gimp-item-set-name darker-layer "darker mask")
(gimp-item-set-visible darker-layer FALSE)
;; make lighter mask
(gimp-image-insert-layer new-image original-layer-for-lighter 0 -1)
(gimp-image-insert-layer new-image blurred-layer-for-lighter 0 -1)
(gimp-layer-set-mode blurred-layer-for-lighter LAYER-MODE-SUBTRACT)
(set! lighter-layer
(car (gimp-image-merge-visible-layers new-image CLIP-TO-IMAGE)))
(gimp-item-set-name lighter-layer "lighter mask")
;; combine them
(gimp-item-set-visible original-layer TRUE)
(gimp-layer-set-mode darker-layer LAYER-MODE-SUBTRACT)
(gimp-layer-set-opacity darker-layer mask-opacity)
(gimp-item-set-visible darker-layer TRUE)
(gimp-layer-set-mode lighter-layer LAYER-MODE-ADDITION)
(gimp-layer-set-opacity lighter-layer mask-opacity)
(gimp-item-set-visible lighter-layer TRUE)
(gimp-image-undo-enable new-image)
(gimp-displays-flush)
)
)
(script-fu-register-filter "script-fu-unsharp-mask"
"Unsharp Mask..."
"Make a new image from the current layer by applying the unsharp mask method"
"Shuji Narazaki <narazaki@gimp.org>"
"Shuji Narazaki"
"1997,1998"
"*"
SF-ONE-OR-MORE-DRAWABLE
SF-ADJUSTMENT _"Mask size" '(5 1 100 1 1 0 1)
SF-ADJUSTMENT _"Mask opacity" '(50 0 100 1 1 0 1)
)
|
