; The GIMP -- an image manipulation program ; Copyright (C) 1995 Spencer Kimball and Peter Mattis ; ; add-bevel.scm version 1.04 ; Time-stamp: <2004-02-09 17:07:06 simon> ; ; 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 2 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, write to the Free Software ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ; ; Copyright (C) 1997 Andrew Donkin (ard@cs.waikato.ac.nz) ; Contains code from add-shadow.scm by Sven Neumann ; (neumanns@uni-duesseldorf.de) (thanks Sven). ; ; Adds a bevel to an image. See http://www.cs.waikato.ac.nz/~ard/gimp/ ; ; If there is a selection, it is bevelled. ; Otherwise if there is an alpha channel, the selection is taken from it ; and bevelled. ; Otherwise the whole image is bevelled. ; ; The selection is set on exit, so Select->Invert then Edit->Clear will ; leave a cut-out. Then use Sven's add-shadow for that ; floating-bumpmapped-texture cliche. ; ; 1.01: now works on offset layers. ; 1.02: has crop-pixel-border option to trim one pixel off each edge of the ; bevelled image. Bumpmapping leaves edge pixels unchanged, which ; looks bad. Oddly, this is not apparant in the GIMP - you have to ; save the image and load it into another viewer. First noticed in ; Nutscrape. ; Changed path (removed "filters/"). ; 1.03: adds one-pixel border before bumpmapping, and removes it after. ; Got rid of the crop-pixel-border option (no longer reqd). ; 1.04: Fixed undo handling, ensure that bumpmap is big enough, ; (instead of resizing the image). Removed references to outdated ; bumpmap plugin. (Simon) ; (define (script-fu-add-bevel img drawable thickness work-on-copy keep-bump-layer) (let* ((index 0) (bevelling-whole-image FALSE) (greyness 0) (thickness (abs thickness)) (type (car (gimp-drawable-type-with-alpha drawable))) (image (if (= work-on-copy TRUE) (car (gimp-image-duplicate img)) img)) (pic-layer (car (gimp-image-get-active-drawable image))) (offsets (gimp-drawable-offsets pic-layer)) (width (car (gimp-drawable-width pic-layer))) (height (car (gimp-drawable-height pic-layer))) (old-bg (car (gimp-palette-get-background))) ; Bumpmap has a one pixel border on each side (bump-layer (car (gimp-layer-new image (+ width 2) (+ height 2) GRAY "Bumpmap" 100 NORMAL-MODE))) ) ; If the layer we're bevelling is offset from the image's origin, we ; have to do the same to the bumpmap (gimp-layer-set-offsets bump-layer (- (car offsets) 1) (- (cadr offsets) 1)) ; disable undo on copy, start group otherwise (if (= work-on-copy TRUE) (gimp-image-undo-disable image) (gimp-image-undo-group-start image) ) ;------------------------------------------------------------ ; ; Set the selection to the area we want to bevel. ; (if (eq? 0 (car (gimp-selection-bounds image))) (begin (set! bevelling-whole-image TRUE) ; ...so we can restore things properly, and crop. (if (car (gimp-drawable-has-alpha pic-layer)) (gimp-selection-layer-alpha pic-layer) (gimp-selection-all image) ) ) ) ; Store it for later. (set! select (car (gimp-selection-save image))) ; Try to lose the jaggies (gimp-selection-feather image 2) ;------------------------------------------------------------ ; ; Initialise our bumpmap ; (gimp-palette-set-background '(0 0 0)) (gimp-drawable-fill bump-layer BACKGROUND-FILL) (set! index 1) (while (< index thickness) (set! greyness (/ (* index 255) thickness)) (gimp-palette-set-background (list greyness greyness greyness)) ;(gimp-selection-feather image 1) ;Stop the slopey jaggies? (gimp-edit-bucket-fill bump-layer BG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0) (gimp-selection-shrink image 1) (set! index (+ index 1)) ) ; Now the white interior (gimp-palette-set-background '(255 255 255)) (gimp-edit-bucket-fill bump-layer BG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0) ;------------------------------------------------------------ ; ; Do the bump. ; (gimp-selection-none image) ; To further lessen jaggies? ;(plug-in-gauss-rle 1 image bump-layer thickness TRUE TRUE) ; ; BUMPMAP INVOCATION: ; (plug-in-bump-map 1 image pic-layer bump-layer 125 45 3 0 0 0 0 TRUE FALSE 1) ;------------------------------------------------------------ ; ; Restore things ; (gimp-palette-set-background old-bg) (if (= bevelling-whole-image TRUE) (gimp-selection-none image) ; No selection to start with (gimp-selection-load select) ) ; If they started with a selection, they can Select->Invert then ; Edit->Clear for a cutout. ; clean up (gimp-image-remove-channel image select) (if (= keep-bump-layer TRUE) (begin (gimp-image-add-layer image bump-layer 1) (gimp-drawable-set-visible bump-layer 0)) (gimp-drawable-delete bump-layer) ) (gimp-image-set-active-layer image pic-layer) ; enable undo / end undo group (if (= work-on-copy TRUE) (begin (gimp-display-new image) (gimp-image-undo-enable image) ) (gimp-image-undo-group-end image) ) (gimp-displays-flush) ) ) (script-fu-register "script-fu-add-bevel" _"/Script-Fu/Decor/Add B_evel..." "Add a bevel to an image" "Andrew Donkin " "Andrew Donkin" "1997/11/06" "RGB* GRAY*" SF-IMAGE "Image" 0 SF-DRAWABLE "Drawable" 0 SF-ADJUSTMENT _"Thickness" '(5 0 30 1 2 0 0) SF-TOGGLE _"Work on Copy" TRUE SF-TOGGLE _"Keep Bump Layer" FALSE )