Extended Light

        light intensity extended radius x y z
Figure 3-5

Extended light works in much the same way as point light, except that the light source itself can be given a size (radius) and (because it has a size) the light will have "fuzzy" edges.

Figure 3-6

        /*
           extended.ray
           Extended Light Example
           Stephen Peter 14 Feb 93
        */
        eyep 11.25 -6.72 5
        lookp 5 2 1.5
        screen 300 200
        background .9 .9 .9

        light 1 extended 2  0 0 8

        ------- the remainder is the same as area.ray-------

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THE END - Notes on Rayshade - 3 - Lighting and Atmospheric Effects - Extended Light