POV-Ray : Newsgroups : povray.general : Noise types in 3.5 Server Time
7 Aug 2024 03:22:03 EDT (-0400)
  Noise types in 3.5 (Message 1 to 4 of 4)  
From: Tom Melly
Subject: Noise types in 3.5
Date: 5 Dec 2001 11:54:01
Message: <3c0e5129$1@news.povray.org>
Which of the various noise types is considered "best"? - or is it a case of
horses for courses, and if so which horse for which course?

--
#macro G(D,E,F)#local I=array[3]{D,E,F}#local B=0;triangle{#while(
B<3)#while(I[B])A[mod(I[B],10)]+#local I[B]=div(I[B],10);#end<-5,-
2,9>#local B=B+1;#end}#end #local A=array[7]{x,x*2,x*4,y,y*2,y*4,z
}light_source{-x*6-z*9,1}mesh{G(105,10,146)G(105,246,10)G(105,56,
146)G(105,1256,246)G(1256,126,220)G(22156,2216,201)pigment{rgb 1}}//TM


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From: Rune
Subject: Re: Noise types in 3.5
Date: 5 Dec 2001 12:26:34
Message: <3c0e58ca@news.povray.org>
"Tom Melly" wrote:
> Which of the various noise types is considered "best"?
> - or is it a case of horses for courses, and if so which
> horse for which course?

Nr. 1 and 2 are the most random and out of those nr. 2 don't have plateaus
(sp?), so you might say that's the best one. I really don't know why nr. 3
was added...

Rune
--
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Rune's World:    http://rsj.mobilixnet.dk (updated Nov 5)
POV-Ray Users:   http://rsj.mobilixnet.dk/povrayusers/
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From: Christoph Hormann
Subject: Re: Noise types in 3.5
Date: 5 Dec 2001 12:59:34
Message: <3C0E60B1.93E710CD@gmx.de>
Rune wrote:
> 
> Nr. 1 and 2 are the most random and out of those nr. 2 don't have plateaus
> (sp?), so you might say that's the best one. I really don't know why nr. 3
> was added...
> 

Nr. 2 is just a 'roughly' fixed version of Nr. 1.  Number 3 is totally
new, but has some problems with not being very random.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: John VanSickle
Subject: Re: Noise types in 3.5
Date: 6 Dec 2001 11:47:30
Message: <3C0FA1E6.C90DC19B@hotmail.com>
Tom Melly wrote:
> 
> Which of the various noise types is considered "best"? - or is it a
> case of horses for courses, and if so which horse for which course?

Type one was used to design the texture for Rusty.  I'm staying with it.

-- 
ICQ: 46085459


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