Christopher James Huff <cja### [at] earthlinknet> wrote:
>> It also explains why media effects slow rendering down tremendously.

> Yes...media is done by marching the ray through the media, sampling it 
> at various points along the ray. Solving it analytically would be 
> faster, but far more limited.

  Fog in POV-Ray is calculated analytically (instead of ray-marching).
We all know how more limited fog is compared to media (and how faster as
well)...

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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