; FU_artist_crosshatch.scm
; version 2.8 [gimphelp.org]
; last modified/tested by Paul Sherman
; 02/15/2014 on GIMP-2.8.10
; 28/08/2020 on Gimp 2.10.20
;
; first edit for gimp-2.4 by paul on 1/27/2008
; "peeled" from photoeffects.scm - an scm containing several scripts
; separated to more easily update and to place more easily in menus.
;
; 02/15/2014 - work with non-rgb, merge option and install info added
;==============================================================
;
; Installation:
; This script should be placed in the user or system-wide script folder.
;
;	Windows Vista/7/8)
;	C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;	or
;	C:\Users\YOUR-NAME\.gimp-2.8\scripts
;	
;	Windows XP
;	C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;	or
;	C:\Documents and Settings\yourname\.gimp-2.8\scripts   
;    
;	Linux
;	/home/yourname/.gimp-2.8/scripts  
;	or
;	Linux system-wide
;	/usr/share/gimp/2.0/scripts
;
; ALSO NEED TO COPY:
; ev_crosshatched.txt
;
;	Windows Vista/7
;	C:\Program Files\GIMP 2\share\gimp\2.0\gimpressionist\presets
;	or
;	C:\Users\YOUR-NAME\.gimp-2.8\gimpressionist\presets
;	
;	Windows XP
;	C:\Program Files\GIMP 2\share\gimp\2.0\gimpressionist\preset
;	or
;	C:\Documents and Settings\yourname\.gimp-2.8\gimpressionist\presets  
;    
;	Linux
;	/home/yourname/.gimp-2.8/gimpressionist/presets 
;	or
;	Linux - system-wide
;	/usr/share/gimp/2.0/gimpressionist/Presets 
;==============================================================
;
; LICENSE
;
;    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 <http://www.gnu.org/licenses/>.
;
;==============================================================
; Original information 
; 
; Crosshatch image script  for GIMP 2.2
; Copyright (C) 2007 Eddy Verlinden <eddy_verlinden@hotmail.com>
;==============================================================

(define (FU-crosshatch
    img
    drawable
    inMerge
    )
    (gimp-image-undo-group-start img)
    (define indexed (car (gimp-drawable-is-indexed drawable)))
    (if (= indexed TRUE)(gimp-image-convert-rgb img))
  (let* (
            (width (car (gimp-drawable-width drawable)))
            (height (car (gimp-drawable-height drawable)))
            (old-selection (car (gimp-selection-save img)))
            (image-type (car (gimp-image-base-type img)))
            (layer-type (car (gimp-drawable-type drawable)))
            (layer-temp1 (car (gimp-layer-new img width height layer-type "temp1"  100 LAYER-MODE-NORMAL)))
            (achannel)
        ) 
        
        (if (eqv? (car (gimp-selection-is-empty img)) TRUE)
            (gimp-drawable-fill old-selection FILL-WHITE)) ; so Empty and All are the same.
        (gimp-selection-none img)
        (gimp-drawable-fill layer-temp1 FILL-TRANSPARENT)
        (gimp-image-insert-layer img layer-temp1 0 -1)
        (gimp-layer-add-alpha layer-temp1)
        (gimp-edit-copy drawable)
        (gimp-floating-sel-anchor (car (gimp-edit-paste layer-temp1 0)))
        
        ;;(plug-in-gimpressionist 1 img layer-temp1 "ev_crosshatched.txt")
        (plug-in-gimpressionist 1 img layer-temp1 "Crosshatch")
        
        (gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
        (gimp-selection-invert img)
        (if (eqv? (car (gimp-selection-is-empty img)) FALSE) ; both Empty and All are denied
            (begin
                (gimp-edit-clear layer-temp1)
            )
        )
        
        (gimp-item-set-name layer-temp1 "Crosshatch")
        (gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
        (gimp-image-remove-channel img old-selection)
        
        (set! achannel (car (gimp-image-get-active-channel img)))
        (plug-in-dilate RUN-NONINTERACTIVE img layer-temp1 1 achannel 0.99 5 0 50)
        
        (if (= inMerge TRUE)(gimp-image-merge-visible-layers img EXPAND-AS-NECESSARY))
        (gimp-image-undo-group-end img)
        (gimp-displays-flush)
  )
)

(script-fu-register
    "FU-crosshatch"
    "<Image>/Script-Fu/Artist/Crosshatched..."
    "Creates a crosshatched blur effect, based on the Gimpressionist. \nfile:FU_artist_crosshatch.scm"
    "Eddy Verlinden <eddy_verlinden@hotmail.com>"
    "Eddy Verlinden"
    "2007, juli"
    "*"
    SF-IMAGE      "Image"                           0
    SF-DRAWABLE   "Drawable"                        0
    SF-TOGGLE     "Merge layers when complete?"     FALSE
)

; end of script 