Le 2010-06-27 11:58, SharkD a écrit :
> On 6/26/2010 1:59 PM, Alain wrote:
>> Not for the presure.
>> As the air in the center may, under some conditions, rotate slightly
>> faster than the station, the presure *will* diminishes from the surface
>> toward the center.
>> BUT, as the radius is /only/ 1 Km and quite probably a rim gravity less
>> than Earth's gravity, the presure gradient will be relatively small,
>> possibly small enough to be neglected. Maybe in the order of 2% or 3%.
>> After all, you realy don't need a full Earth gravity, something between
>> 0.5G and 0.7G should be enough.
>>
>>
>> Alain
>
> If I remove the density map, will rendering times change? Also, how
> should I specify the media's density when the pattern is absent?
>
>

You may not need as many samples, whitch will make things go faster.
NEVER use intervals and only use samples. It's MUCH faster.
Set your media base density. The density from the map get multiplied 
with it.
scattering{1, rgb 0.01,.....}
Change the rgb value.



Alain

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