; FU_artist_angled-strokes.scm
; version 2.9 [gimphelp.org] 
; last modified/tested by Paul Sherman
; 02/15/2014 on GIMP-2.8.10
;
; 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.
;
; 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 10
;   C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;   or
;   C:\Users\YOUR-NAME\.gimp-2.10\scripts
;   or
;   C:\Users\YOUR-NAME\AppData\Roaming\GIMP\2.10\scripts
;   
;   
;	Linux
;	/home/yourname/.gimp-2.8/scripts  
;	or
;	Linux system-wide
;	/usr/share/gimp/2.0/scripts
;
; ALSO NEED TO PUT:
; ev_angledstrokes.txt
;
;	Windows 10 plus
;	C:\Program Files\GIMP 2\share\gimp\2.0\gimpressionist\presets
;	or
;	C:\Users\YOUR-NAME\.gimp-2.10\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 
; 
; Angled Strokes image script  for GIMP 2.2
; Copyright (C) 2007 Eddy Verlinden <eddy_verlinden@hotmail.com>
;==============================================================

(define (FU-angled-strokes
            img
            drawable
            inMerge
    )
    
    (gimp-image-undo-group-start img)
    
    (define indexed (car (gimp-drawable-is-indexed drawable)))
    
    (if (= indexed TRUE)
        (begin
            (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)))
        ) 
        
    (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_angledstrokes")
    (plug-in-gimpressionist 1 img layer-temp1 "Line-art-2")
    (plug-in-unsharp-mask 1 img layer-temp1 5.0 1.0 0) 
    
    (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 "Angled strokes")
    (gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
    (gimp-image-remove-channel img old-selection)
    
    (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-angled-strokes"
    "<Toolbox>/Script-Fu/Artist/Angled strokes"
    "Creates a drawing effect, based on the Gimpressionist. \nfile: FU_artist_angled-strokes.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