POV-Ray: Newsgroups: povray.general: Worley Noise?

POV-Ray : Newsgroups : povray.general : Worley Noise?		Server Time 25 Apr 2024 08:14:33 EDT (-0400)

From: Bald Eagle
Subject: Worley Noise?
Date: 23 Jan 2017 12:50:02
Message: <web.5886420fb6cdab0dc437ac910@news.povray.org>

https://en.wikipedia.org/wiki/Worley_noise

Can this be trivially implemented with the appropriate parameters for crackle,
or is it more involved?

Looks like it's a great function for use in landscapes and other scene elements:
http://procworld.blogspot.com/2011/05/hello-worley.html

https://aftbit.com/cell-noise-2/
http://www.carljohanrosen.com/share/CellNoiseAndProcessing.pdf

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From: clipka
Subject: Re: Worley Noise?
Date: 23 Jan 2017 13:21:16
Message: <5886499c$1@news.povray.org>

Am 23.01.2017 um 18:49 schrieb Bald Eagle:
> https://en.wikipedia.org/wiki/Worley_noise
> 
> Can this be trivially implemented with the appropriate parameters for crackle,
> or is it more involved?

From what I see, POV-Ray's crackle pattern essentially /is/ (3D) Worley
noise.

    crackle form <A,B,C>

will give you A*F_1(x) + B*F_2(x) + C*F_3(x).

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