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Alain <ele### [at] netscape net> wrote:
> It's obvious why you don't see anything: you set "ambient_light 0" in your
> global_settings
and you realize it was intentional, don't you? The point was to prove that
without any ray sources at all, there's no *raytraced* images.
Anyways, I forgot raytracing works backwards, by shooting rays into the scene
and then, possibly, to light sources. Indeed, it can still work without light
rays, by just tracing rays to objects with high ambient values.
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