; Scale 524 is a script for The GIMP
;
; Description: scales the image down to 525x393 and applies unsharp mask in two steps
;
; Copyright (C) 2004 Dr. Martin Rogge <marogge@onlinehome.de>
; Modified by Yop Nono from scaling 25% to 50%
; and Tanked Up Underwater Imaging add scaling to 524 x 393
;
; 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.

; Only tested on v2.2.11

; define script name and variables
(define (script-scale524 img draw)

	; start an undo for rescale
	(gimp-image-undo-group-start img)

	; flatten image
	(gimp-image-flatten img)

	; set the width and height scaling, in this case 2 which is divide by 2 (50%)
	(set! width  (/ (car (gimp-image-width  img)) 2))
	(set! height (/ (car (gimp-image-height img)) 2))

	; scale the image to 50%
	(gimp-image-scale img width height)

	; end the undo for rescale
	(gimp-image-undo-group-end img)

	; set image to action
	(set! draw (car (gimp-image-get-active-drawable img)))

	; unsharp mask image to Radius 1.0 Amount 0.3 Threshold 0
	(plug-in-unsharp-mask 1 img draw 1.0 0.3 0)

	; start an undo for rescale
	(gimp-image-undo-group-start img)

	; flatten image
	(gimp-image-flatten img)

	; scale the image to desired size, in this case width 524 and height 393
	(gimp-image-scale img 524 393)

	; end the undo for rescale
	(gimp-image-undo-group-end img)

	; set image to action
	(set! draw (car (gimp-image-get-active-drawable img)))

	; unsharp mask image to Radius 1.0 Amount 0.3 Threshold 0
	(plug-in-unsharp-mask 1 img draw 1.0 0.3 0)

	; clean
	(gimp-displays-flush)
)

(script-fu-register "script-scale524"
		_"<Image>/Script-F_u/_Underwater Photos/Scale _524x393"
		"Scale 2xxx width image to 524x393 and unsharp mask (Radius 1.0 Amount 0.3 Threshold 0) in two steps"
		"www.tankedup-imaging.com"
		"Tanked Up Underwater Imaging"
		"08 July 2006"
		"RGB*"
		SF-IMAGE "Image" 0
		SF-DRAWABLE "Drawable" 0
)