590c4d0b9f
2006-10-20 Kevin Cozens <kcozens@cvs.gnome.org> * plug-ins/script-fu/scheme-wrapper.c: Moved the MIN and MAX entries for image size and resolution to script_constants structureas they are not deprecated constants. * plug-ins/script-fu/scripts/script-fu.init: Removed CR in line endings. * plug-ins/script-fu/scripts/*.scm: Fixed a number of regressions that snuck in during the last big update of the scripts. This update reduces the number of differences to the original scripts (other than formatting). Some additional formatting changes in a few scripts. Updates to use colour names in register block where possible. Fixed a bug in burn-in-anim.scm. Minor cleanup of font-map.scm. Simplified the bug fix in tile-blur.scm.
203 lines
7.6 KiB
Scheme
203 lines
7.6 KiB
Scheme
; The GIMP -- an image manipulation program
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; Copyright (C) 1995 Spencer Kimball and Peter Mattis
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;
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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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;
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;
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; perspective-shadow.scm version 1.2 2000/11/08
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;
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; Copyright (C) 1997-2000 Sven Neumann <sven@gimp.org>
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;
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;
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; Adds a perspective shadow of the current selection or alpha-channel
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; as a layer below the active layer
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;
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(define (script-fu-perspective-shadow image
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drawable
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alpha
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rel-distance
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rel-length
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shadow-blur
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shadow-color
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shadow-opacity
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interpolation
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allow-resize)
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(let* (
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(shadow-blur (max shadow-blur 0))
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(shadow-opacity (min shadow-opacity 100))
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(shadow-opacity (max shadow-opacity 0))
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(rel-length (abs rel-length))
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(alpha (* (/ alpha 180) *pi*))
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(type (car (gimp-drawable-type-with-alpha drawable)))
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(image-width (car (gimp-image-width image)))
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(image-height (car (gimp-image-height image)))
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(from-selection 0)
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(active-selection 0)
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(shadow-layer 0)
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)
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(gimp-context-push)
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(if (= rel-distance 0) (set! rel-distance 999999))
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(gimp-image-undo-group-start image)
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(gimp-layer-add-alpha drawable)
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(if (= (car (gimp-selection-is-empty image)) TRUE)
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(begin
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(gimp-selection-layer-alpha drawable)
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(set! from-selection FALSE))
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(begin
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(set! from-selection TRUE)
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(set! active-selection (car (gimp-selection-save image)))))
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(let* ((selection-bounds (gimp-selection-bounds image))
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(select-offset-x (cadr selection-bounds))
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(select-offset-y (caddr selection-bounds))
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(select-width (- (cadr (cddr selection-bounds)) select-offset-x))
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(select-height (- (caddr (cddr selection-bounds)) select-offset-y))
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(abs-length (* rel-length select-height))
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(abs-distance (* rel-distance select-height))
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(half-bottom-width (/ select-width 2))
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(half-top-width (* half-bottom-width
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(/ (- rel-distance rel-length) rel-distance)))
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(x0 (+ select-offset-x (+ (- half-bottom-width half-top-width)
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(* (cos alpha) abs-length))))
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(y0 (+ select-offset-y (- select-height
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(* (sin alpha) abs-length))))
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(x1 (+ x0 (* 2 half-top-width)))
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(y1 y0)
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(x2 select-offset-x)
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(y2 (+ select-offset-y select-height))
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(x3 (+ x2 select-width))
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(y3 y2)
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(shadow-width (+ (- (max x1 x3) (min x0 x2)) (* 2 shadow-blur)))
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(shadow-height (+ (- (max y1 y3) (min y0 y2)) (* 2 shadow-blur)))
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(shadow-offset-x (- (min x0 x2) shadow-blur))
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(shadow-offset-y (- (min y0 y2) shadow-blur)))
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(set! shadow-layer (car (gimp-layer-new image
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select-width
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select-height
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type
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"Perspective Shadow"
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shadow-opacity
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NORMAL-MODE)))
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(gimp-image-add-layer image shadow-layer -1)
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(gimp-layer-set-offsets shadow-layer select-offset-x select-offset-y)
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(gimp-drawable-fill shadow-layer TRANSPARENT-FILL)
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(gimp-context-set-background shadow-color)
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(gimp-edit-fill shadow-layer BACKGROUND-FILL)
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(gimp-selection-none image)
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(if (= allow-resize TRUE)
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(let* ((new-image-width image-width)
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(new-image-height image-height)
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(image-offset-x 0)
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(image-offset-y 0))
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(if (< shadow-offset-x 0)
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(begin
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(set! image-offset-x (- 0 shadow-offset-x))
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(set! new-image-width (- new-image-width image-offset-x))))
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(if (< shadow-offset-y 0)
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(begin
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(set! image-offset-y (- 0 shadow-offset-y))
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(set! new-image-height (- new-image-height image-offset-y))))
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(if (> (+ shadow-width shadow-offset-x) new-image-width)
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(set! new-image-width (+ shadow-width shadow-offset-x)))
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(if (> (+ shadow-height shadow-offset-y) new-image-height)
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(set! new-image-height (+ shadow-height shadow-offset-y)))
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(gimp-image-resize image
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new-image-width
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new-image-height
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image-offset-x
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image-offset-y)))
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(gimp-drawable-transform-perspective shadow-layer
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x0 y0
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x1 y1
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x2 y2
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x3 y3
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TRANSFORM-FORWARD
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interpolation
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TRUE 3 FALSE)
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(if (>= shadow-blur 1.0)
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(begin
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(gimp-layer-set-lock-alpha shadow-layer FALSE)
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(gimp-layer-resize shadow-layer
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shadow-width
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shadow-height
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shadow-blur
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shadow-blur)
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(plug-in-gauss-rle 1
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image
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shadow-layer
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shadow-blur
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TRUE
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TRUE))))
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(if (= from-selection TRUE)
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(begin
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(gimp-selection-load active-selection)
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(gimp-edit-clear shadow-layer)
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(gimp-image-remove-channel image active-selection)))
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(if (and
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(= (car (gimp-layer-is-floating-sel drawable)) 0)
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(= from-selection FALSE))
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(gimp-image-raise-layer image drawable))
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(gimp-image-set-active-layer image drawable)
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(gimp-image-undo-group-end image)
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(gimp-displays-flush)
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(gimp-context-pop)
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)
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)
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(script-fu-register "script-fu-perspective-shadow"
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_"_Perspective..."
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_"Add a perspective shadow to the selected region (or alpha)"
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"Sven Neumann <sven@gimp.org>"
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"Sven Neumann"
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"2000/11/08"
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"RGB* GRAY*"
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SF-IMAGE "Image" 0
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SF-DRAWABLE "Drawable" 0
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SF-ADJUSTMENT _"Angle" '(45 0 180 1 10 1 0)
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SF-ADJUSTMENT _"Relative distance of horizon" '(5 0 24 .1 1 1 1)
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SF-ADJUSTMENT _"Relative length of shadow" '(1 0 24 .1 1 1 1)
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SF-ADJUSTMENT _"Blur radius" '(3 0 1024 1 10 0 0)
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SF-COLOR _"Color" '(0 0 0)
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SF-ADJUSTMENT _"Opacity" '(80 0 100 1 10 0 0)
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SF-ENUM _"Interpolation" '("InterpolationType" "linear")
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SF-TOGGLE _"Allow resizing" FALSE
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)
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(script-fu-menu-register "script-fu-perspective-shadow"
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"<Image>/Filters/Light and Shadow/Shadow")
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