1 files changed, 122 insertions, 0 deletions
diff --git a/plug-ins/script-fu/scripts/distress-selection.scm b/plug-ins/script-fu/scripts/distress-selection.scm
new file mode 100644
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+++ b/plug-ins/script-fu/scripts/distress-selection.scm
@@ -0,0 +1,122 @@
+;
+; distress selection
+;
+;
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+; Define the function:
+
+(define (script-fu-distress-selection inImage
+                                      inDrawable
+                                      inThreshold
+                                      inSpread
+                                      inGranu
+                                      inSmooth
+                                      inSmoothH
+                                      inSmoothV)
+
+  (let (
+       (theImage inImage)
+       (theWidth (car (gimp-image-width inImage)))
+       (theHeight (car (gimp-image-height inImage)))
+       (theLayer 0)
+       (theMode (car (gimp-image-base-type inImage)))
+       (prevLayer (car (gimp-image-get-active-layer inImage)))
+       )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-image-undo-group-start theImage)
+
+    (if (= theMode GRAY)
+      (set! theMode GRAYA-IMAGE)
+      (set! theMode RGBA-IMAGE)
+    )
+    (set! theLayer (car (gimp-layer-new theImage
+                                        theWidth
+                                        theHeight
+                                        theMode
+                                        "Distress Scratch Layer"
+                                        100
+                                        LAYER-MODE-NORMAL)))
+
+    (gimp-image-insert-layer theImage theLayer 0 0)
+
+    (if (= FALSE (car (gimp-selection-is-empty theImage)))
+        (gimp-drawable-edit-fill theLayer FILL-BACKGROUND)
+    )
+
+    (gimp-selection-invert theImage)
+
+    (if (= FALSE (car (gimp-selection-is-empty theImage)))
+        (gimp-drawable-edit-clear theLayer)
+    )
+
+    (gimp-selection-invert theImage)
+    (gimp-selection-none inImage)
+
+    (gimp-layer-scale theLayer
+                      (/ theWidth inGranu)
+                      (/ theHeight inGranu)
+                      TRUE)
+
+    (plug-in-spread RUN-NONINTERACTIVE
+                    theImage
+                    theLayer
+                    inSpread
+                    inSpread)
+
+    (plug-in-gauss-iir RUN-NONINTERACTIVE
+           theImage theLayer inSmooth inSmoothH inSmoothV)
+    (gimp-layer-scale theLayer theWidth theHeight TRUE)
+    (plug-in-threshold-alpha RUN-NONINTERACTIVE theImage theLayer inThreshold)
+    (plug-in-gauss-iir RUN-NONINTERACTIVE theImage theLayer 1 TRUE TRUE)
+    (gimp-image-select-item inImage CHANNEL-OP-REPLACE theLayer)
+    (gimp-image-remove-layer theImage theLayer)
+    (if (and (= (car (gimp-item-is-channel inDrawable)) TRUE)
+             (= (car (gimp-item-is-layer-mask inDrawable)) FALSE))
+      (gimp-image-set-active-channel theImage inDrawable)
+      )
+    (gimp-image-undo-group-end theImage)
+
+    (gimp-image-set-active-layer theImage prevLayer)
+
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+
+(script-fu-register "script-fu-distress-selection"
+  _"_Distort..."
+  _"Distress the selection"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "23rd April 1998"
+  "RGB*,GRAY*"
+  SF-IMAGE       "The image"              0
+  SF-DRAWABLE    "The layer"              0
+  SF-ADJUSTMENT _"_Threshold (bigger 1<-->254 smaller)" '(127 1 254 1 10 0 0)
+  SF-ADJUSTMENT _"_Spread"                 '(8 0 1000 1 10 0 1)
+  SF-ADJUSTMENT _"_Granularity (1 is low)" '(4 1 25 1 10 0 1)
+  SF-ADJUSTMENT _"S_mooth"                 '(2 1 150 1 10 0 1)
+  SF-TOGGLE     _"Smooth hor_izontally"    TRUE
+  SF-TOGGLE     _"Smooth _vertically"      TRUE
+)
+
+(script-fu-menu-register "script-fu-distress-selection"
+                         "<Image>/Select/Modify")