SharkD wrote:
> I would like to request the addition of speed of the light rays. This would
> allow one to explore things like doppler effects, as well as the difference
> between the geometric versus apparent positions of the sun, moon and planets.

You'd get interesting effects with long renders; light that had reached 
the camera plane on line 1 would be different from the light that 
reaches line 200, four hours later...

*snicker*

-- 
Tim Cook
http://empyrean.digitalartsuk.com

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