I finally got around to implementing patterned light sources, here are 
the first results. The patch isn't quite finished yet, see my post in 
.unofficial.patches for details. Here is the code for these two light 
sources:
light_source {< -8, 5,-3>*2,
    pigment {onion
        color_map {
            [0 color Red]
            [0.5 color Green]
            [1 color Blue]
        }
        translate < -5, 0.5,-3>*2
    }
    color Yellow
    map_type 0
}
light_source {< 2, 5,-5>*2,
    pigment {onion
        color_map {
            [0 color Red]
            [0.5 color Green]
            [1 color Blue]
        }
        translate < 2, 5,-5>*2
    }
    color Yellow
    map_type 0
}

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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