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> enlight tex (norm, uv) = RGB (c * Vec.vec (norm `dot` toGPU (0:.0:.1:.()))) > where RGB c = sample (Sampler Linear Wrap) tex uv

light_source {<-2, +3, -5>, colour rgb 1} pigment {colour rgb <1, 0, 0>}

(RGB v) <- runIL $ readImage f runIL $ writeImage ("flip-"++f) (RGB rotated)

...e named colors, or colors represented by [http://en.wikipedia.org/wiki/RGB RGB triple], such as "red", "yellow", or "#FFFFFF", etc; and we are going to tr ...a tuple with the closest RGB values provided by the hardware and the exact RGB values, both encoded in a

...lor (in RGB). Light intensity can be controlled by scaling up the color's rgb values (they don't need to lie between 0 and 1). :Color library. Colors are records of three floats in RGB format. There's nothing surprising or particularly clever here.

...rate random hex color strings. The range of colors can be restricted using RGB min/max value or HSV saturation and value.