Am 10.03.2013 19:07, schrieb Brad:
>
>>
>> This comment was made in the other thread (from 2002) as well I think, but I
>> don't quite understand it. If you look at this example from the POVRAY
>> documentation: http://www.povray.org/documentation/view/3.6.2/99/, there is this
>> tornado effect which is visible in front of a white background. Could this
>> tornado not have been made red? If so, that seems similar to what I want to do.
>
> Okay, 'smoke' not tornado. Maybe this is fundamentally different, but is what
> gave me the idea that absorptive media could be used effectively in front of a
> white background.

Absorbing media - yes. Scattering media - no.

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