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Held: Wednesday, 16 September 2009
Summary: Today we explore common ways in which to transform colors, pixels, and images.
(rgb-new red green blue)- create a new color
(image-set-pixel! image col row color)- set the color of a pixel
(image-get-pixel image col row)- get the color of a pixela
(rgb-red color)- get the red component
(rgb-green color)- get the green component
(rgb-blue color)- get the blue component
(color->rgb-list color)- get a list of the three components
(color->rgb color)- convert some representations to the RGB representation.
(define color-transform (lambda (color) (rgb-new ___ ; computation of red component ___ ; computation of green component ___ ; computation of blue component )))
(define only-blue (lambda (color) (rgb-new ___ ___ ___)))
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