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"Slime" <slm### [at] slimeland com> wrote in message
news:3dab967d@news.povray.org...
> > On the topic of lighting, here's an idea for something to include in the
> > next version: Negative Lighting.
>
>
> light_source {
> Position,
> rgb -1
> }
>
> Try it. Make sure to have some positive light sources, or full ambient
> lighting.
Nope, sorry, doesn't work exactly right unfortunately. Shadows aren't
correct. This just came to my attention recently and before that I had never
noticed a problem using negative light source colors. So, I don't know if
something changed or I just had not seen a shadow of one under the right
circumstances. I've used positive and negative lights in v3.1 media without
any apparent problem, although I can't remember what shadows there might
have been from them.
That would mean a reworking of light sources to correct this problem (which
isn't one, being outside the usual usage).
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