106 lines
3.0 KiB
Scheme
106 lines
3.0 KiB
Scheme
;
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; distress selection
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;
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;
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; Chris Gutteridge (cjg@ecs.soton.ac.uk)
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; At ECS Dept, University of Southampton, England.
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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; Define the function:
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(define (script-fu-distress-selection inImage
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inLayer
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inThreshold
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inSpread
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inGranu
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inSmooth
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inSmoothH
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inSmoothV
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)
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(set! theImage inImage)
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(set! theWidth (car (gimp-image-width inImage)))
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(set! theHeight (car (gimp-image-height inImage)))
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(gimp-image-undo-disable theImage)
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(set! theLayer (car (gimp-layer-new theImage
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theWidth
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theHeight
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RGBA_IMAGE
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"Distress Scratch Layer"
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100
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NORMAL
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) ) )
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(gimp-image-add-layer theImage theLayer 0)
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(if (= TRUE (car (gimp-selection-is-empty theImage)))
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()
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(gimp-edit-fill theLayer)
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)
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(gimp-selection-invert theImage)
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(if (= TRUE (car (gimp-selection-is-empty theImage)))
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()
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(gimp-edit-clear theLayer)
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)
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(gimp-selection-invert theImage)
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(gimp-selection-none inImage)
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(gimp-layer-scale theLayer
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(/ theWidth inGranu)
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(/ theHeight inGranu)
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TRUE
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)
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(plug-in-spread TRUE
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theImage
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theLayer
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inSpread
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inSpread
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)
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(plug-in-gauss-iir TRUE theImage theLayer inSmooth inSmoothH inSmoothV)
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; (plug-in-gauss-iir TRUE theImage theLayer 2 TRUE TRUE)
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(gimp-layer-scale theLayer theWidth theHeight TRUE)
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(plug-in-threshold-alpha TRUE theImage theLayer inThreshold)
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(plug-in-gauss-iir TRUE theImage theLayer 1 TRUE TRUE)
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(gimp-selection-layer-alpha theLayer)
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(gimp-image-remove-layer theImage theLayer)
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; (gimp-layer-delete theLayer)
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(gimp-image-undo-enable theImage)
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(gimp-displays-flush)
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)
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; Register the function with the GIMP:
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(script-fu-register
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"script-fu-distress-selection"
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"<Image>/Script-Fu/Selection/Distress Selection..."
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"foo"
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"Chris Gutteridge"
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"1998, Chris Gutteridge / ECS dept, University of Southampton, England."
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"23rd April 1998"
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"RGB RGBA"
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SF-IMAGE "The Image" 0
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SF-DRAWABLE "The Layer" 0
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SF-VALUE "Threshold (bigger 1<-->255 smaller)" "127"
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SF-VALUE "Spread" "8"
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SF-VALUE "Granularity (1 is low)" "4"
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SF-VALUE "Smooth" "2"
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SF-TOGGLE "Smooth Horizontally?" TRUE
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SF-TOGGLE "Smooth Vertically?" TRUE
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)
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