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GIMP Script-Fu Script | 2009-12-15 | 3.4 KB | 96 lines |
- ;;; grid-system.scm -*-scheme-*-
- ;;; Time-stamp: <1998/01/20 23:22:02 narazaki@InetQ.or.jp>
- ;;; This file is a part of:
- ;;; GIMP (Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis)
- ;;; Author: Shuji Narazaki (narazaki@InetQ.or.jp)
- ;;; Version 0.6
-
- ;;; Code:
- (if (not (symbol-bound? 'script-fu-grid-system-x-divides (current-environment)))
- (define script-fu-grid-system-x-divides "'(1 g 1)"))
- (if (not (symbol-bound? 'script-fu-grid-system-y-divides (current-environment)))
- (define script-fu-grid-system-y-divides "'(1 g 1)"))
-
- (define (script-fu-grid-system img drw x-divides-orig y-divides-orig)
- (define (update-segment! s x0 y0 x1 y1)
- (aset s 0 x0)
- (aset s 1 y0)
- (aset s 2 x1)
- (aset s 3 y1))
- (define (map proc seq)
- (if (null? seq)
- '()
- (cons (proc (car seq))
- (map proc (cdr seq)))))
- (define (convert-g l)
- (cond ((null? l) '())
- ((eq? (car l) 'g) (cons 1.618 (convert-g (cdr l))))
- ((eq? (car l) '1/g) (cons 0.618 (convert-g (cdr l))))
- ('else (cons (car l) (convert-g (cdr l))))))
- (define (wrap-list l)
- (define (wrap-object obj)
- (cond ((number? obj) (string-append (number->string obj) " "))
- ((eq? obj 'g) "g ")
- (eq? obj '1/g) "1/g "))
- (string-append "'(" (apply string-append (map wrap-object l)) ")"))
- (let* ((drw-width (car (gimp-drawable-width drw)))
- (drw-height (car (gimp-drawable-height drw)))
- (drw-offset-x (nth 0 (gimp-drawable-offsets drw)))
- (drw-offset-y (nth 1 (gimp-drawable-offsets drw)))
- (grid-layer #f)
- (segment (cons-array 4 'double))
- (stepped-x 0)
- (stepped-y 0)
- (temp 0)
- (total-step-x 0)
- (total-step-y 0)
- (x-divides (convert-g x-divides-orig))
- (y-divides (convert-g y-divides-orig))
- (total-step-x (apply + x-divides))
- (total-step-y (apply + y-divides)))
-
- (gimp-image-undo-group-start img)
-
- (set! grid-layer (car (gimp-layer-copy drw TRUE)))
- (gimp-image-add-layer img grid-layer 0)
- (gimp-edit-clear grid-layer)
- (gimp-drawable-set-name grid-layer "Grid Layer")
-
- (while (not (null? (cdr x-divides)))
- (set! stepped-x (+ stepped-x (car x-divides)))
- (set! temp (* drw-width (/ stepped-x total-step-x)))
- (set! x-divides (cdr x-divides))
- (update-segment! segment
- (+ drw-offset-x temp) drw-offset-y
- (+ drw-offset-x temp) (+ drw-offset-y drw-height))
- (gimp-pencil grid-layer 4 segment))
-
- (while (not (null? (cdr y-divides)))
- (set! stepped-y (+ stepped-y (car y-divides)))
- (set! temp (* drw-height (/ stepped-y total-step-y)))
- (set! y-divides (cdr y-divides))
- (update-segment! segment
- drw-offset-x (+ drw-offset-y temp)
- (+ drw-offset-x drw-width) (+ drw-offset-y temp))
- (gimp-pencil grid-layer 4 segment))
-
- (gimp-image-undo-group-end img)
-
- (set! script-fu-grid-system-x-divides (wrap-list x-divides-orig))
- (set! script-fu-grid-system-y-divides (wrap-list y-divides-orig))
- (gimp-displays-flush)))
-
- (script-fu-register "script-fu-grid-system"
- _"_Grid..."
- _"Draw a grid as specified by the lists of X and Y locations using the current brush"
- "Shuji Narazaki <narazaki@InetQ.or.jp>"
- "Shuji Narazaki"
- "1997"
- "RGB*, INDEXED*, GRAY*"
- SF-IMAGE "Image to use" 0
- SF-DRAWABLE "Drawable to draw grid" 0
- SF-VALUE _"X divisions" script-fu-grid-system-x-divides
- SF-VALUE _"Y divisions" script-fu-grid-system-y-divides
- )
-
-