Adding upstream version 2.10.34.upstream/2.10.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 217 insertions, 0 deletions

diff --git a/plug-ins/script-fu/scripts/perspective-shadow.scm b/plug-ins/script-fu/scripts/perspective-shadow.scm
new file mode 100644
index 0000000..1eb40e3
--- /dev/null
+++ b/plug-ins/script-fu/scripts/perspective-shadow.scm
@@ -0,0 +1,217 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; 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/>.
+;
+;
+; perspective-shadow.scm   version 1.2   2000/11/08
+;
+; Copyright (C) 1997-2000 Sven Neumann <sven@gimp.org>
+;
+;
+; Adds a perspective shadow of the current selection or alpha-channel
+; as a layer below the active layer
+;
+
+(define (script-fu-perspective-shadow image
+                                      drawable
+                                      alpha
+                                      rel-distance
+                                      rel-length
+                                      shadow-blur
+                                      shadow-color
+                                      shadow-opacity
+                                      interpolation
+                                      allow-resize)
+  (let* (
+        (shadow-blur (max shadow-blur 0))
+        (shadow-opacity (min shadow-opacity 100))
+        (shadow-opacity (max shadow-opacity 0))
+        (rel-length (abs rel-length))
+        (alpha (* (/ alpha 180) *pi*))
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (from-selection 0)
+        (active-selection 0)
+        (shadow-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (if (> rel-distance 24) (set! rel-distance 999999))
+    (if (= rel-distance rel-length) (set! rel-distance (+ rel-distance 0.01)))
+
+    (gimp-image-undo-group-start image)
+
+    (gimp-layer-add-alpha drawable)
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! from-selection FALSE))
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))))
+
+    (let* ((selection-bounds (gimp-selection-bounds image))
+           (select-offset-x (cadr selection-bounds))
+           (select-offset-y (caddr selection-bounds))
+           (select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+           (select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+           (abs-length (* rel-length select-height))
+           (abs-distance (* rel-distance select-height))
+           (half-bottom-width (/ select-width 2))
+           (half-top-width (* half-bottom-width
+                            (/ (- rel-distance rel-length) rel-distance)))
+
+           (x0 (+ select-offset-x (+ (- half-bottom-width half-top-width)
+                                   (* (cos alpha) abs-length))))
+           (y0 (+ select-offset-y (- select-height
+                                   (* (sin alpha) abs-length))))
+           (x1 (+ x0 (* 2 half-top-width)))
+           (y1 y0)
+           (x2 select-offset-x)
+           (y2 (+ select-offset-y select-height))
+           (x3 (+ x2 select-width))
+           (y3 y2)
+
+           (shadow-width (+ (- (max x1 x3) (min x0 x2)) (* 2 shadow-blur)))
+           (shadow-height (+ (- (max y1 y3) (min y0 y2)) (* 2 shadow-blur)))
+           (shadow-offset-x (- (min x0 x2) shadow-blur))
+           (shadow-offset-y (- (min y0 y2) shadow-blur)))
+
+
+      (set! shadow-layer (car (gimp-layer-new image
+                                              select-width
+                                              select-height
+                                              type
+                                              "Perspective Shadow"
+                                              shadow-opacity
+                                              LAYER-MODE-NORMAL)))
+
+
+      (gimp-image-insert-layer image shadow-layer 0 -1)
+      (gimp-layer-set-offsets shadow-layer select-offset-x select-offset-y)
+      (gimp-drawable-fill shadow-layer FILL-TRANSPARENT)
+      (gimp-context-set-background shadow-color)
+      (gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
+      (gimp-selection-none image)
+
+      (if (= allow-resize TRUE)
+          (let* ((new-image-width image-width)
+                 (new-image-height image-height)
+                 (image-offset-x 0)
+                 (image-offset-y 0))
+
+            (if (< shadow-offset-x 0)
+                (begin
+                  (set! image-offset-x (abs shadow-offset-x))
+                  (set! new-image-width (+ new-image-width image-offset-x))
+                  ; adjust to new coordinate system
+                  (set! x0 (+ x0 image-offset-x))
+                  (set! x1 (+ x1 image-offset-x))
+                  (set! x2 (+ x2 image-offset-x))
+                  (set! x3 (+ x3 image-offset-x))
+                ))
+
+            (if (< shadow-offset-y 0)
+                (begin
+                  (set! image-offset-y (abs shadow-offset-y))
+                  (set! new-image-height (+ new-image-height image-offset-y))
+                  ; adjust to new coordinate system
+                  (set! y0 (+ y0 image-offset-y))
+                  (set! y1 (+ y1 image-offset-y))
+                  (set! y2 (+ y2 image-offset-y))
+                  (set! y3 (+ y3 image-offset-y))
+                ))
+
+            (if (> (+ shadow-width shadow-offset-x) new-image-width)
+                (set! new-image-width (+ shadow-width shadow-offset-x)))
+
+            (if (> (+ shadow-height shadow-offset-y) new-image-height)
+                (set! new-image-height (+ shadow-height shadow-offset-y)))
+            (gimp-image-resize image
+                               new-image-width
+                               new-image-height
+                               image-offset-x
+                               image-offset-y)))
+
+      (gimp-context-set-transform-direction TRANSFORM-FORWARD)
+      (gimp-context-set-interpolation interpolation)
+      (gimp-context-set-transform-recursion 3)
+      (gimp-context-set-transform-resize TRANSFORM-RESIZE-ADJUST)
+
+      (gimp-item-transform-perspective shadow-layer
+                        x0 y0
+                        x1 y1
+                        x2 y2
+                        x3 y3)
+
+      (if (>= shadow-blur 1.0)
+          (begin
+            (gimp-layer-set-lock-alpha shadow-layer FALSE)
+            (gimp-layer-resize shadow-layer
+                               shadow-width
+                               shadow-height
+                               shadow-blur
+                               shadow-blur)
+            (plug-in-gauss-rle RUN-NONINTERACTIVE
+                               image
+                               shadow-layer
+                               shadow-blur
+                               TRUE
+                               TRUE))))
+
+    (if (= from-selection TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+          (gimp-drawable-edit-clear shadow-layer)
+          (gimp-image-remove-channel image active-selection)))
+
+    (if (and
+          (= (car (gimp-layer-is-floating-sel drawable)) 0)
+          (= from-selection FALSE))
+      (gimp-image-raise-item image drawable))
+
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-perspective-shadow"
+  _"_Perspective..."
+  _"Add a perspective shadow to the selected region (or alpha)"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "2000/11/08"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image"                        0
+  SF-DRAWABLE    "Drawable"                     0
+  SF-ADJUSTMENT _"Angle"                        '(45 0 180 1 10 1 0)
+  SF-ADJUSTMENT _"Relative distance of horizon" '(5 0.1 24.1 0.1 1 1 1)
+  SF-ADJUSTMENT _"Relative length of shadow"    '(1 0.1 24   0.1 1 1 1)
+  SF-ADJUSTMENT _"Blur radius"                  '(3 0 1024 1 10 0 0)
+  SF-COLOR      _"Color"                        '(0 0 0)
+  SF-ADJUSTMENT _"Opacity"                      '(80 0 100 1 10 0 0)
+  SF-ENUM       _"Interpolation"                '("InterpolationType" "linear")
+  SF-TOGGLE     _"Allow resizing"               FALSE
+)
+
+(script-fu-menu-register "script-fu-perspective-shadow"
+                         "<Image>/Filters/Light and Shadow/Shadow")