"Woody" <nomail@nomail> wrote in message 
news:web.486afea135de7638f45a716c0@news.povray.org...
> I'm trying to cast a light on a black surface such as
> ...
> But I can't do that because I need to create a white object, such as
>
> sphere{10*x,3 pigment{color White}}
>
> However, in order to have that visible I would need to have an additional 
> white
> light somewhere in the scene, which would illuminate the true pigment of 
> the
> wall I'm trying to make look black.
>
> Any ideas?
>

A third idea is to illuminate the white object with a directional light (a 
spotlight), so that each object has its own light.
For the 'black' object you could then make it white or grey with 'finish 
{ambient 0}', so that only the illuminated bit showed up.

Regards,
Chris B.

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