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AutoColorize_flavor0_02.scm
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; GPLv3
;; This script was tested with Gimp 2.10.24
;;
;; New versions will be distributed from <http://github.com/> only
;;
;; 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>.
;;
; ;Define the function
; Auto colorize image into random number of colors of random hues
; author: Tin Tran
; date: 2015
(define (script-fu-auto-colorize-flavor0 simage slayer
hatches
rgb
flatten
)
(let*
(
(color-map 0)
(colors 0)
(image-width)
(image-height)
;(R 0.2126) ;constants for calculating luminance
;(G 0.7152)
;(B 0.0722)
;(0.299*R + 0.587*G + 0.114*B)
;(R 0.299)
;(G 0.587)
;(B 0.114)
;sqrt( 0.299*R^2 + 0.587*G^2 + 0.114*B^2 )
;(B (/ 18.0 255))
;(R (/ 54.0 255))
;(G (/ 182.0 255))
;wikipedia
(Bl 0.0722)
(Re 0.2126)
(Gr 0.7152)
;how my camera sees black and white
;(B (/ 147 479))
;(R (/ 138 479))
;(G (/ 194 479))
(r 0) ;randomly generated r g b values
(g 0)
(b 0)
(l-original 0) ;luminance original
(l-new 0)
(red 0)
(green 0)
(blue 0)
(y 0)
(hue)
(floating)
(difference)
(image)
(layer)
(try 2)
(tries 256)
(counter 1)
(loopbreak 1)
)
;(gimp-image-undo-disable image); DN = NO UNDO
(gimp-image-undo-group-start simage) ;undo-group in one step
;convert to indexed
(set! image-width (car (gimp-image-width simage)))
(set! image-height (car (gimp-image-height simage)))
;creates new image instead of working on existing one
(gimp-selection-all simage)
(gimp-edit-copy-visible simage)
(gimp-edit-copy slayer)
(set! image (car (gimp-edit-paste-as-new-image)))
(set! layer (car (gimp-image-get-active-layer image)))
;(gimp-message "ok to here 69")
(set! floating (car (gimp-layer-new image image-width image-height
RGBA-IMAGE "Colorize" 100 LAYER-MODE-NORMAL-LEGACY))) ;creates layer
;insert above current layer
;(gimp-image-insert-layer image new-layer 0 (car (gimp-image-get-item-position image layer)))
(gimp-image-insert-layer image floating 0 0) ; was 0 0
(gimp-drawable-edit-fill floating FILL-TRANSPARENT)
(gimp-display-new image)
(gimp-displays-flush)
;(set! image (car (gimp-image-new width height RGB))) ;creates new image
(gimp-image-convert-indexed image CONVERT-DITHER-NONE CONVERT-PALETTE-GENERATE hatches FALSE FALSE "unused palette name")
;grabs color map
(set! colors (vector->list (cadr (gimp-image-get-colormap image))))
(gimp-image-convert-rgb image) ;converts it to rgb before we call hatch loop
(set! y hatches) ;loop hatches number of times
;; (srand (car (gettimeofday)))
(srand (realtime))
;(gimp-message "time ok")
(gimp-context-set-sample-threshold-int 5)
(gimp-context-set-sample-criterion 0)
(while (> y 0)
;do work here
(set! red (car colors))
(set! green (cadr colors))
(set! blue (caddr colors))
;select each color
;(gimp-message (number->string r))
;(gimp-message (number->string red))
;(gimp-message (number->string b))
;(gimp-message (number->string blue))
(gimp-image-set-active-layer image layer)
(gimp-image-select-color image CHANNEL-OP-REPLACE layer (list red green blue)) ; was layer
;(set! hue (rand 360))
;(gimp-colorize layer hue 100 0)
;(gimp-message "color selected")
;(gimp-edit-copy layer)
;(set! floating (car(gimp-edit-paste layer TRUE)))
;(gimp-floating-sel-to-layer floating)
;(gimp-image-set-active-layer image floating)
;;;(set! floating (car (gimp-layer-new image image-width image-height
;;; RGBA-IMAGE "Colorize" 100 LAYER-MODE-NORMAL-LEGACY))) ;creates layer
;insert above current layer
;(gimp-image-insert-layer image new-layer 0 (car (gimp-image-get-item-position image layer)))
;;;(gimp-image-insert-layer image floating 0 1) ; was 0 0
;;;(gimp-drawable-edit-fill floating FILL-TRANSPARENT)
;set that layer to be active layer
;;;(gimp-image-set-active-layer image floating)
;;;(gimp-edit-copy layer)
;;;(set! floating (car (gimp-edit-paste layer TRUE)))
;;;(gimp-floating-sel-to-layer floating)
;;;(gimp-image-set-active-layer image floating)
(gimp-image-select-color image CHANNEL-OP-REPLACE layer (list red green blue)) ; was layer
;;;(gimp-displays-flush)
;;;(gimp-message "quit now")
;;;(quit)
;(set! hue (rand 360))
;(gimp-colorize floating hue 100 0)
;sqrt( 0.299*R^2 + 0.587*G^2 + 0.114*B^2 )
;(set! l-original (sqrt(+ (pow(* red R) 2) (pow (* green G) 2) (pow (* blue B) 2))))
(set! l-original (+ (* red Re) (* green Gr) (* blue Bl)))
(set! difference 10)
;just randomly pick a color until we find a color of similar luminance
;absolutely not the ideal way of getting a color
(set! loopbreak 1)
(while (and (> difference 1) (< loopbreak 550))
(if (< l-original 10)
(begin
(set! r (rand 21))
(set! g (rand 21))
(set! b (rand 21))
)
(begin
(if (> l-original 245)
(begin
(set! r (+ (rand 20) 234))
(set! g (+ (rand 20) 234))
(set! b (+ (rand 20) 234))
)
(begin
(set! r (rand 254)) ; was 256
(set! g (rand 254)) ; was 256
(set! b (rand 254)) ; was 256
)
)
)
)
(if (= rgb 1)
(begin
;;(gimp-message "rgb=1")
(if (< l-original 85)
(begin
(while (or (< b r) (< b g))
(if (< l-original 10)
(begin
(set! r (rand 21))
(set! g (rand 21))
(set! b (rand 21))
)
(begin
(if (> l-original 245)
(begin
(set! r (+ (rand 30) 224))
(set! g (+ (rand 30) 224))
(set! b (+ (rand 30) 224)) ; was rand 20 and 234
)
(begin
(set! r (rand 254)) ;was 256
(set! g (rand 254)) ; was 256
(set! b (rand 254)) ; was 256
)
)
)
)
)
)
(begin
(if (> l-original (* 85 2))
(begin
(while (or (< g r) (< g b))
(if (< l-original 10)
(begin
(set! r (rand 21))
(set! g (rand 21))
(set! b (rand 21))
)
(begin
(if (> l-original 245)
(begin
(set! r (+ (rand 20) 234))
(set! g (+ (rand 20) 234))
(set! b (+ (rand 20) 234))
)
(begin
(set! r (rand 254)) ; was 256
(set! g (rand 254)) ; was 256
(set! b (rand 254)) ; was 256
)
)
)
)
)
)
(begin
(while(or (< r g) (< r b))
(if (< l-original 10)
(begin
(set! r (rand 21))
(set! g (rand 21))
(set! b (rand 21))
)
(begin
(if (> l-original 245)
(begin
(set! r (+ (rand 20) 234))
(set! g (+ (rand 20) 234))
(set! b (+ (rand 20) 234))
)
(begin
(set! r (rand 254)) ; was 256
(set! g (rand 254)) ; was 256
(set! b (rand 254)) ; was 256
)
)
)
)
)
)
)
)
)
)
(begin
;;(gimp-message "rgb=0")
;;(gimp-message "inside here")
)
)
(set! loopbreak (+ loopbreak 1))
;(set! l-new (sqrt(+ (pow(* r R) 2) (pow (* g G) 2) (pow (* b B) 2))))
(set! l-new (+ (* r Re) (* g Gr) (* b Bl)))
(set! difference (abs (- l-new l-original)))
)
;;(gimp-message "ready to color")
;(gimp-message (number->string difference))
;(gimp-message (number->string r))
;(gimp-message (number->string red))
;(script-fu-colorize image floating (list r g b) 100)
;(gimp-message "ready to color2")
(gimp-image-set-active-layer image layer)
(gimp-image-select-color image CHANNEL-OP-REPLACE layer (list red green blue))
(gimp-image-set-active-layer image floating)
;(gimp-context-set-foreground '(123 0 240))
(gimp-context-set-foreground (list r g b))
(gimp-drawable-edit-fill floating FILL-FOREGROUND) ;; was image-edit-fill
;;;(gimp-selection-none image)
(if (> y 1) ;if y is still valid we set colors to the next colors
(begin
(set! colors (cdddr colors))
)
)
;loop control
(set! y (- y 1))
;(gimp-message "flushing and while looping")
;(gimp-displays-flush)
);end of while
(gimp-selection-none image)
(if (= flatten TRUE)
(begin
(gimp-image-flatten image)
)
(begin)
)
;(gimp-image-undo-enable image) ;DN = NO UNDO
(gimp-image-undo-group-end simage) ;undo group in one step
(gimp-displays-flush)
(gc)
)
) ;end of define
(script-fu-register
"script-fu-auto-colorize-flavor0" ;function name
"<Image>/Script-Fu2/Create from Image/Auto Colorize flavour0..." ;menu register
"Randomly colorize image with specified number of colors. \nfile:AutoColorize_flavor0_02.scm" ;description
"Tin Tran" ;author name
"copyright info and description" ;copyright info or description
"2015" ;date
"RGB*, GRAY*" ;mode
SF-IMAGE "Image" 0
SF-DRAWABLE "Layer" 0
SF-ADJUSTMENT "Number of colors" '(5 2 255 1 10 0 0)
SF-OPTION "Colorize with" '("Random colors" "RGB variations")
SF-TOGGLE "Flatten newly created image" FALSE
)
;;-----------------------------