On Sat, 21 Sep 2002 06:00:59 -0400, Rafal 'Raf256' Maj quoth:

> Mark Wagner <mar### [at] gtenet> wrote in
> news:pan### [at] gtenet
> 
>>>>Hi,
>>>>when data for photons and/or media can NOT be safle loaded ? I ques
>>>>that camera moving/rotation is alwys safe, and any other changes is
>>>>scene (objects or lights) is not safe - is this correct ?
>>>Moving the camera is always safe.  Moving lights that do not cast
>>>photons
> 
> This is NOT true for radiosity - camera can NOT see any surfaces that
> where hidden during saving radiosity. For this surfaces there is no
> radiosity data. Or - yes, the data can be loaded, but more radiosity
> data must be gathered (due to presense of new surfaces)

The original question was dealing with photons, for which it IS true.

-- 
Mark

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