Charles nous apporta ses lumieres en ce 2007/09/09 09:12:
> Hello,
> 
> I've made some progress:
> 
> http://www.turingbirds.com/personal/random/wax_trial_2_render.png
> http://www.turingbirds.com/personal/random/wax_trial_2.pov
> 
> However, despite the end of the cylinder being inside the box, it is not
> getting "blurry", just darker. It looks like povray is treating the
> scattering media as a single entity, rather than a near-infinite number of
> particles which it's supposed to represent. Kasuga_Kyousuke on povray irc
> advised me that radiosity will not fix this scene, because of the same
> reason: looking at the media as a single entity. Does anyone know of a way
> to make this work?
> 
> Thanks,
> Charles
> 
> PS. Intended result: candle wax with black bead embedded
> (http://www.turingbirds.com/personal/random/wax.png)
> PS2. adding absorption does not work; it only makes everything evenly darker
> 
> 
You use:
     media {
       intervals 10
        samples 1,1
        scattering  {5, 2 eccentricity 0.0}
     }
With the default sampling method used (methode 3, adaptive), it's prety slow.
If you remove "intervals 10" and replace samples 1,1 by samples 20, you will 
gain on quality AND speed.
Method 3 require at least 3 samples and works best with only 1 intervals. You 
may supply a second samples value but it will be ignored.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you prefer bald romatic partners, 
because they're easier to model.
John VanSickle

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