Mike Williams napsal(a):
> Wasn't it Woody who wrote:
>> Is there anyway to change how a gradient density fades off?
>>
>> The following scene has a density that's a linear gradient. That is it 
>> falls off
>> in a linear fashion. Is there any way to change this so the density 
>> falls off
>> say at a geometric or exponential rate? Maybe instead of a linear 
>> decreasing
>> density, something where the density is sinosoidal?
> 
> You can use a function as the density pattern, like this:
> 
> http://www.econym.demon.co.uk/isotut/patterns.htm#density
> 
or you can add a grayscale color map (I assume you want a colourless 
gas) or a waveform.

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