St. nous apporta ses lumieres ainsi en ce 2004/05/18 14:32... :

>Can this be done with Pov? I would imagine that focal_blur could/would
>be used, but how would you produce that undulating, blurred, wavy
>effect behind your scene?
>
> Any ideas?
>
> ~Steve~
>
>
>
>  
>
I tought of a trick:
Use a serie of invisible refractive boxes with small normal variations 
and low iors (1.001 to 1.1) set at a scale that increase with the 
distance from the camera. Increase max_trace_level by double the number 
of boxes. That way, distent objects will get more distortion than close 
ones. It's obvious that it will also increase render time. The boxes 
have to be large enough to cover all the visible area and hollow if you 
have any media like some fog.

I never tested it.

Alain

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