POV-Ray : Newsgroups : povray.binaries.images : Ignorant question re: noise (5kbbu) Server Time
3 Oct 2024 19:17:37 EDT (-0400)
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From: Chris Huff
Subject: Re: Ignorant question re: noise (5kbbu)
Date: 7 Jan 2000 16:37:25
Message: <chrishuff_99-B0878B.16373507012000@news.povray.org>
In article <38765a6e@news.povray.org>, "omniVERSE" <inv### [at] aolcom> 
wrote:

> Well, you're talking to an ignoramus here anyway, so that doesn't help at
> all.
> The text spacing suffered in the translation but I guess I get you're 
> point
> anyhow.  What's perplexing is why the "x" ever changes if I'm 
> understanding
> this whatsoever.  Idea is that it gets seen together with whatever 
> equation
> then?  x=6 is also (2*x)=3 just simply sounds like division, (x/2)=3, in 
> the
> usual sense.  Maybe that's where other people are going wrong in the
> thinking.
> Oh!  Do you mean that "x" is the only thing checked in some way?  So 
> despite the resulting math it looks back at "x" alone??

Say F() is a function that takes one parameter and returns a unique 
value for every value given it.
If A=F(x) when x=6, A=F(2*x) when x=3.

If the function gives a certain result for a certain input, multiplying 
the input numbers by 2 will make it hit that result twice as soon.


> Maybe I'm catching on, but you need not try and explain further unless
> someone else is trying figuring this stuff out.

Well, I am going to have to learn how to explain this stuff sooner or 
later. I think I am getting better...:-)

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/


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From: SamuelT 
Subject: Re: Ignorant question re: noise (5kbbu)
Date: 7 Jan 2000 23:17:12
Message: <3876BC47.1AB74558@aol.com>
It's been my experience that noise3d does suffer from flat crests and
troughs (to use an analogy). I've not encountered any way to avoid it,
either. I wish there were a way around it, though.

Ron Parker wrote:

>  I don't think noise3d suffers from the same problems
> as bozo and other patterns.  Try making your bounding box larger.
>
> --
> These are my opinions.  I do NOT speak for the POV-Team.
> The superpatch: http://www2.fwi.com/~parkerr/superpatch/
> My other stuff: http://www2.fwi.com/~parkerr/traces.html

--
Samuel Benge

E-Mail: STB### [at] aolcom

Visit the still unfinished isosurface tutorial:
http://members.aol.com/stbenge


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