POV-Ray : Newsgroups : povray.binaries.images : Noise3d and Megapov 0.5 : Re: Noise3d and Megapov 0.5 Server Time
4 Nov 2024 15:00:41 EST (-0500)
  Re: Noise3d and Megapov 0.5  
From: Mick Hazelgrove
Date: 20 Jun 2000 12:15:52
Message: <394f98b8@news.povray.org>
I think this clearly shows why clouds in paticular modeled in MP05 are too
soft. Someone suggested a colour map fix for density which helped. I shall
have to look up the message.

Mick

"Jerome" <ber### [at] inamecom> wrote in message
news:394F4E3B.17BA4A12@iname.com...
> As you all know, Nathan fixed noise3d in megapov 0.5 to get
> rid of the plateau effect. But his fix makes for radically
> different scenes (unless you modify your source to
> compensate). I'm suggesting another way to fix it that makes
> for much less difference in existing code.
>
> Pros:
> - the results are very similar to those of the old noise3d
> making for easier adaptation (in particular, any scene made
> with the original should render nearly the same unless it
> relied on the plateau effect).
>
> Cons:
> - it's slightly slower
> - the statistical distribution is heavily distorted (who
> cares?)
>
> Attached are 3 pics:
> * noise3d isosurface rendered with megapov 0.4
> * the same rendered with my modified version of megapov 0.4
> * the same rendered with megapov 0.5
>
> What do you think?
>
> Jerome
> --

> * Doctor Jekyll had something * mailto:ber### [at] inamecom
> * to Hyde...                  * http://www.enst.fr/~jberger
> *******************************


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