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From: hutch@fps.com (Jim Hutchison)
Newsgroups: comp.graphics
Subject: Re: Turbulence functions
Message-ID: <631@celit.fps.com>
Date: 15 Sep 89 23:54:33 GMT
References: <QZ3Y6tm00WB_01TGQw@andrew.cmu.edu>
Sender: daemon@fps.com
Reply-To: hutch@fps.com (Jim Hutchison)
Organization: FPS Computing
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In article <QZ3Y6tm00WB_01TGQw@andrew.cmu.edu> po0o+@andrew.cmu.edu (Paul Andrew Olbrich) writes:
>Could someone please post an example of a turbulence function, or
>provide pointers to one?

x,y,z in [0,1]

simple ones:
    f(x,y,z) = x^2 + y^2 + z^2
    f(x,y,z) = sin(x * 100 * pi) + sin(y * 100 * pi) + sin(z * 100 * pi)

or did you mean a turbulence function in terms of a function which is
"random" in its output, but for values spatially close together yield
outputs which are "near" to each other?

/*    Jim Hutchison   		{dcdwest,ucbvax}!ucsd!celerity!hutch  */
/*    Disclaimer:  I am not an official spokesman for FPS computing   */