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Ingy döt Net 2013-04-10 16:19:29 -07:00
parent e5e8880e41
commit 518da4a923
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Task/Bitmap/Scheme/bitmap-2.ss Normal file
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(define (make-image columns rows)
(if (= rows 0)
(list)
(cons (make-list columns (list)) (make-image columns (- rows 1)))))
(define (image-fill! image colour)
(if (not (null? image))
(begin (list-fill! (car image) colour) (image-fill! (cdr image) colour))))
(define (image-set! image column row colour)
(list-set! (list-get image row) column colour))
(define (image-get image column row)
(list-get (list-get image row) column))