Wolfgang Wieser wrote:
> After reading Christoph Hormann's c't article about computer 
> generated landscapes using POVRay, I had the following idea: 
> 
> What about a distance dependent isosurface accuracy?
> 
> I mean: in the foreground (near to the camera), high accuracy 
> is needed while in the background, lower accuracy could IMHO be 
> used without noticable difference but for faster rendering. 

As you probably can imagine you are not the first one to have this idea. 
  :-) I did not try it actually but the advantages could be quite 
limited, the speed of isosurfaces does not depend that much on the 
accuracy setting and low values tend to lead to artefacts.  See also:

Subject: Re: erosion structures (77k)
Date: Thu, 25 Oct 2001 20:26:15 +0900
Newsgroups: povray.binaries.images
From: "R. Suzuki" <r-s### [at] aistgojp>
news://news.povray.org/3bd7f6e8$1@news.povray.org
http://news.povray.org/3bd7f6e8$1@news.povray.org


Christoph

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