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gimp/plug-ins/script-fu/scripts/hsv-graph.scm
Michael Natterer 1bc1419e8f app/core/Makefile.am new files. 
2001-12-12  Michael Natterer  <mitch@gimp.org>

	* app/core/Makefile.am
	* app/core/gimpimage-pick-color.[ch]: new files.

	gimp_image_pick_color() doesn't set the FG or BG color and doesn't
	touch the current palettte.

	* app/tools/gimpcolorpickertool.[ch]: removed the actual picking
	code, set the user_context's FG or BG color here.

	* app/gui/palette-editor.[ch]:
	s/palette_set_active_color/palette_editor_update_color/, don't set
	the FG and BG color here. The function is still #if 0'ed.

	* app/gui/toolbox.c: fixed WM resize hints in toolbox_style_set(),
	code cleanup.

	* app/tools/gimppainttool.[ch]: some cleanup before chopping.

	* app/tools/gimpsmudgetool.c: changed accordingly.

	* tools/pdbgen/pdb/misc_tools.pdb: removed the possibility to set
	the FG or BG color or add the picked color to the active palette
	bacause it doesn't belong here. Palette PDB wrappers are on the
	TODO anyway.

	* app/pdb/misc_tools_cmds.c
	* libgimp/gimpmisctools_pdb.[ch]: regenerated.

	* plug-ins/perl/examples/image_tile
	* plug-ins/perl/examples/logulator
	* plug-ins/script-fu/scripts/hsv-graph.scm
	* plug-ins/script-fu/scripts/title-header.scm: changed accordingly.
2001-12-12 01:16:39 +00:00

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;;; hsv-graph.scm -*-scheme-*-
;;; Author: Shuji Narazaki <narazaki@InetQ.or.jp>
;;; Time-stamp: <1998/01/18 05:25:03 narazaki@InetQ.or.jp>
;;; Version: 1.2
; ************************************************************************
; Changed on Feb 4, 1999 by Piet van Oostrum <piet@cs.uu.nl>
; For use with GIMP 1.1.
; All calls to gimp-text-* have been converted to use the *-fontname form.
; The corresponding parameters have been replaced by an SF-FONT parameter.
; ************************************************************************
;;; Code:
(if (not (symbol-bound? 'script-fu-hsv-graph-scale (the-environment)))
(define script-fu-hsv-graph-scale 1))
(if (not (symbol-bound? 'script-fu-hsv-graph-opacity (the-environment)))
(define script-fu-hsv-graph-opacity 100))
(if (not (symbol-bound? 'script-fu-hsv-graph-bounds? (the-environment)))
(define script-fu-hsv-graph-bounds? TRUE))
(if (not (symbol-bound? 'script-fu-hsv-graph-left2right? (the-environment)))
(define script-fu-hsv-graph-left2right? FALSE))
(if (not (symbol-bound? 'script-fu-hsv-graph-beg-x (the-environment)))
(define script-fu-hsv-graph-beg-x 0))
(if (not (symbol-bound? 'script-fu-hsv-graph-beg-y (the-environment)))
(define script-fu-hsv-graph-beg-y 0))
(if (not (symbol-bound? 'script-fu-hsv-graph-end-x (the-environment)))
(define script-fu-hsv-graph-end-x 1))
(if (not (symbol-bound? 'script-fu-hsv-graph-end-y (the-environment)))
(define script-fu-hsv-graph-end-y 1))
(define (script-fu-hsv-graph img drawable scale opacity bounds?
left2right? beg-x beg-y end-x end-y)
(define (floor x) (- x (fmod x 1)))
(define *pos* #f)
(define (set-point! fvec index x y)
(aset fvec (* 2 index) x)
(aset fvec (+ (* 2 index) 1) y)
fvec)
(define (plot-dot img drawable x y)
(gimp-pencil drawable 1 (set-point! *pos* 0 x y)))
(define (rgb-to-hsv rgb hsv)
(let* ((red (floor (nth 0 rgb)))
(green (floor (nth 1 rgb)))
(blue (floor (nth 2 rgb)))
(h 0.0)
(s 0.0)
(minv (min red (min green blue)))
(maxv (max red (max green blue)))
(v maxv)
(delta 0))
(if (not (= 0 maxv))
(set! s (/ (* (- maxv minv) 255.0) maxv))
(set! s 0.0))
(if (= 0.0 s)
(set! h 0.0)
(begin
(set! delta (- maxv minv))
(cond ((= maxv red)
(set! h (/ (- green blue) delta)))
((= maxv green)
(set! h (+ 2.0 (/ (- blue red) delta))))
((= maxv blue)
(set! h (+ 4.0 (/ (- red green) delta)))))
(set! h (* 42.5 h))
(if (< h 0.0)
(set! h (+ h 255.0)))
(if (< 255 h)
(set! h (- h 255.0)))))
(set-car! hsv (floor h))
(set-car! (cdr hsv) (floor s))
(set-car! (cddr hsv) (floor v))))
;; segment is
;; filled-index (integer)
;; size as number of points (integer)
;; vector (which size is 2 * size)
(define (make-segment length x y)
(if (< 64 length)
(set! length 64))
(if (< length 5)
(set! length 5))
(let ((vec (cons-array (* 2 length) 'double)))
(aset vec 0 x)
(aset vec 1 y)
(list 1 length vec)))
;; accessors
(define (segment-filled-size segment) (car segment))
(define (segment-max-size segment) (cadr segment))
(define (segment-strokes segment) (caddr segment))
(define (fill-segment! segment new-x new-y)
(define (shift-segment! segment)
(let ((base 0)
(size (cadr segment))
(vec (caddr segment))
(offset 2))
(while (< base offset)
(aset vec (* 2 base)
(aref vec (* 2 (- size (- offset base)))))
(aset vec (+ (* 2 base) 1)
(aref vec (+ (* 2 (- size (- offset base))) 1)))
(set! base (+ base 1)))
(set-car! segment base)))
(let ((base (car segment))
(size (cadr segment))
(vec (caddr segment)))
(if (= base 0)
(begin
(shift-segment! segment)
(set! base (segment-filled-size segment))))
(if (and (= new-x (aref vec (* 2 (- base 1))))
(= new-y (aref vec (+ (* 2 (- base 1)) 1))))
#f
(begin
(aset vec (* 2 base) new-x)
(aset vec (+ (* 2 base) 1) new-y)
(set! base (+ base 1))
(if (= base size)
(begin
(set-car! segment 0)
#t)
(begin
(set-car! segment base)
#f))))))
(define (draw-segment img drawable segment limit rgb)
(gimp-palette-set-foreground rgb)
(gimp-airbrush drawable 100 (* 2 limit) (segment-strokes segment)))
(define red-color '(255 10 10))
(define green-color '(10 255 10))
(define blue-color '(10 10 255))
(define hue-segment #f)
(define saturation-segment #f)
(define value-segment #f)
(define red-segment #f)
(define green-segment #f)
(define blue-segment #f)
(define border-size 10)
(define (fill-dot img drawable x y segment color)
(if (fill-segment! segment x y)
(begin
(gimp-palette-set-foreground color)
(draw-segment img drawable segment (segment-max-size segment) color)
#t)
#f))
(define (fill-color-band img drawable x scale x-base y-base color)
(gimp-palette-set-foreground color)
(gimp-rect-select img (+ x-base (* scale x)) 0 scale y-base REPLACE FALSE 0)
(gimp-bucket-fill drawable FG-BUCKET-FILL NORMAL 100 0 FALSE 0 0)
(gimp-selection-none img))
(define (plot-hsv img drawable x scale x-base y-base hsv)
(let ((real-x (* scale x))
(h (car hsv))
(s (cadr hsv))
(v (caddr hsv)))
(fill-dot img drawable (+ x-base real-x) (- y-base h)
hue-segment red-color)
(fill-dot img drawable (+ x-base real-x) (- y-base s)
saturation-segment green-color)
(if (fill-dot img drawable (+ x-base real-x) (- y-base v)
value-segment blue-color)
(gimp-displays-flush))))
(define (plot-rgb img drawable x scale x-base y-base hsv)
(let ((real-x (* scale x))
(h (car hsv))
(s (cadr hsv))
(v (caddr hsv)))
(fill-dot img drawable (+ x-base real-x) (- y-base h)
red-segment red-color)
(fill-dot img drawable (+ x-base real-x) (- y-base s)
green-segment green-color)
(if (fill-dot img drawable (+ x-base real-x) (- y-base v)
blue-segment blue-color)
(gimp-displays-flush))))
(define (clamp-value x minv maxv)
(if (< x minv)
(set! x minv))
(if (< maxv x)
(set! x maxv))
x)
;; start of script-fu-hsv-graph
(if (= TRUE bounds?)
(if (= TRUE (car (gimp-selection-bounds img)))
(let ((results (gimp-selection-bounds img)))
(set! beg-x (nth (if (= TRUE left2right?) 1 3) results))
(set! beg-y (nth 2 results))
(set! end-x (nth (if (= TRUE left2right?) 3 1) results))
(set! end-y (nth 4 results)))
(let ((offsets (gimp-drawable-offsets drawable)))
(set! beg-x (if (= TRUE left2right?)
(nth 0 offsets)
(- (+ (nth 0 offsets)
(car (gimp-drawable-width drawable)))
1)))
(set! beg-y (nth 1 offsets))
(set! end-x (if (= TRUE left2right?)
(- (+ (nth 0 offsets)
(car (gimp-drawable-width drawable)))
1)
(nth 0 offsets)))
(set! end-y (- (+ (nth 1 offsets)
(car (gimp-drawable-height drawable)))
1))))
(let ((offsets (gimp-drawable-offsets drawable)))
(set! beg-x (clamp-value beg-x 0
(+ (nth 0 offsets)
(car (gimp-drawable-width drawable)))))
(set! end-x (clamp-value end-x 0
(+ (nth 0 offsets)
(car (gimp-drawable-width drawable)))))
(set! beg-y (clamp-value beg-y 0
(+ (nth 1 offsets)
(car (gimp-drawable-height drawable)))))
(set! end-y (clamp-value end-y 0
(+ (nth 1 offsets)
(car (gimp-drawable-height drawable)))))))
(set! opacity (clamp-value opacity 0 100))
(let* ((x-len (- end-x beg-x))
(y-len (- end-y beg-y))
(limit (pow (+ (pow x-len 2) (pow y-len 2)) 0.5))
(gimg-width (* limit scale))
(gimg-height 256)
(gimg (car (gimp-image-new (+ (* 2 border-size) gimg-width)
(+ (* 2 border-size) gimg-height) RGB)))
(bglayer (car (gimp-layer-new gimg
(+ (* 2 border-size) gimg-width)
(+ (* 2 border-size) gimg-height)
1 "Background" 100 NORMAL)))
(hsv-layer (car (gimp-layer-new gimg
(+ (* 2 border-size) gimg-width)
(+ (* 2 border-size) gimg-height)
RGBA_IMAGE "HSV Graph" 100 NORMAL)))
(rgb-layer (car (gimp-layer-new gimg
(+ (* 2 border-size) gimg-width)
(+ (* 2 border-size) gimg-height)
RGBA_IMAGE "RGB Graph" 100 NORMAL)))
(clayer (car (gimp-layer-new gimg gimg-width 40 RGBA_IMAGE
"Color Sampled" opacity NORMAL)))
(rgb '(255 255 255))
(hsv '(254 255 255))
(x-base border-size)
(y-base (+ gimg-height border-size))
(index 0)
(old-foreground (car (gimp-palette-get-foreground)))
(old-background (car (gimp-palette-get-background)))
(old-paint-mode (car (gimp-brushes-get-paint-mode)))
(old-brush (car (gimp-brushes-get-brush)))
(old-opacity (car (gimp-brushes-get-opacity))))
(gimp-image-undo-disable gimg)
(gimp-image-add-layer gimg bglayer -1)
(gimp-selection-all gimg)
(gimp-palette-set-background '(255 255 255))
(gimp-edit-fill bglayer BG-IMAGE-FILL)
(gimp-image-add-layer gimg hsv-layer -1)
(gimp-edit-clear hsv-layer)
(gimp-image-add-layer gimg rgb-layer -1)
(gimp-layer-set-visible rgb-layer FALSE)
(gimp-edit-clear rgb-layer)
(gimp-image-add-layer gimg clayer -1)
(gimp-edit-clear clayer)
(gimp-layer-translate clayer border-size 0)
(gimp-selection-none gimg)
(set! red-segment (make-segment 64 x-base y-base))
(set! green-segment (make-segment 64 x-base y-base))
(set! blue-segment (make-segment 64 x-base y-base))
(set! hue-segment (make-segment 64 x-base y-base))
(set! saturation-segment (make-segment 64 x-base y-base))
(set! value-segment (make-segment 64 x-base y-base))
(gimp-brushes-set-brush "Circle (01)")
(gimp-brushes-set-paint-mode NORMAL)
(gimp-brushes-set-opacity 70)
(gimp-display-new gimg)
(while (< index limit)
(set! rgb (car (gimp-color-picker img drawable
(+ beg-x (* x-len (/ index limit)))
(+ beg-y (* y-len (/ index limit)))
TRUE FALSE 0)))
(fill-color-band gimg clayer index scale x-base 40 rgb)
(rgb-to-hsv rgb hsv)
(plot-hsv gimg hsv-layer index scale x-base y-base hsv)
(plot-rgb gimg rgb-layer index scale x-base y-base rgb)
(set! index (+ index 1)))
(mapcar
(lambda (segment color)
(if (< 1 (segment-filled-size segment))
(begin
(gimp-palette-set-foreground color)
(draw-segment gimg hsv-layer segment (segment-filled-size segment)
color))))
(list hue-segment saturation-segment value-segment)
(list red-color green-color blue-color))
(mapcar
(lambda (segment color)
(if (< 1 (segment-filled-size segment))
(begin
(gimp-palette-set-foreground color)
(draw-segment gimg rgb-layer segment (segment-filled-size segment)
color))))
(list red-segment green-segment blue-segment)
(list red-color green-color blue-color))
(gimp-palette-set-foreground '(255 255 255))
(let ((text-layer (car (gimp-text-fontname gimg -1 0 0
"Red: Hue, Green: Sat, Blue: Val"
1 1 12 PIXELS
"-*-helvetica-*-r-*-*-12-*-*-*-p-*-*-*")))
(offset-y (- y-base (car (gimp-drawable-height clayer)))))
(gimp-layer-set-mode text-layer DIFFERENCE)
(gimp-layer-translate clayer 0 offset-y)
(gimp-layer-translate text-layer border-size (+ offset-y 15)))
(gimp-image-set-active-layer gimg bglayer)
(gimp-image-clean-all gimg)
;; return back the state
(gimp-palette-set-foreground old-foreground)
(gimp-palette-set-foreground old-background)
(gimp-brushes-set-brush old-brush)
(gimp-brushes-set-paint-mode old-paint-mode)
(gimp-brushes-set-opacity old-opacity)
(gimp-image-undo-enable gimg)
(set! script-fu-hsv-graph-scale scale)
(set! script-fu-hsv-graph-opacity opacity)
(set! script-fu-hsv-graph-bounds? bounds?)
(set! script-fu-hsv-graph-left2right? left2right?)
(set! script-fu-hsv-graph-beg-x beg-x)
(set! script-fu-hsv-graph-beg-y beg-y)
(set! script-fu-hsv-graph-end-x end-x)
(set! script-fu-hsv-graph-end-y end-y)
(gimp-displays-flush)))
(script-fu-register
"script-fu-hsv-graph"
_"<Image>/Script-Fu/Utils/Draw HSV Graph..."
"Draph the graph of H/S/V values on the drawable"
"Shuji Narazaki <narazaki@InetQ.or.jp>"
"Shuji Narazaki"
"1997"
"RGB*"
SF-IMAGE "Image to analyze" 0
SF-DRAWABLE "Drawable to analyze" 0
SF-ADJUSTMENT _"Graph Scale" (cons script-fu-hsv-graph-scale '(0.1 5 0.1 1 1 1))
SF-ADJUSTMENT _"BG Opacity" (cons script-fu-hsv-graph-opacity '(0 100 1 10 0 1))
SF-TOGGLE _"Use Selection Bounds Instead of Belows" script-fu-hsv-graph-bounds?
SF-TOGGLE _"From Top-Left to Bottom-Right" script-fu-hsv-graph-left2right?
SF-ADJUSTMENT _"Start X" (cons script-fu-hsv-graph-beg-x '(0 5000 1 10 0 1))
SF-ADJUSTMENT _"Start Y" (cons script-fu-hsv-graph-beg-y '(0 5000 1 10 0 1))
SF-ADJUSTMENT _"End X" (cons script-fu-hsv-graph-end-x '(0 5000 1 10 0 1))
SF-ADJUSTMENT _"End Y" (cons script-fu-hsv-graph-end-y '(0 5000 1 10 0 1))
)
;;; hsv-graph.scm ends here
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