POV-Ray : Newsgroups : povray.newusers : Re: brick texture causes "patterns" Server Time
4 Nov 2024 19:14:47 EST (-0500)
  Re: brick texture causes "patterns" (Message 1 to 4 of 4)  
From: hughes, b 
Subject: Re: brick texture causes "patterns"
Date: 10 Feb 2003 15:06:18
Message: <3e48063a$1@news.povray.org>
"Philipp Fuerholz" <fue### [at] gmxch> wrote in message
news:3e47fed9@news.povray.org...
> when rendering this image with the brick-textured block it produces some
> ugly pattern (best seen on the right one), does someone know how to avoid
> this
> I rendered it with Antialising set at 0.3

Was not easy for me to realize what you were asking about. That gray mortar
is very obscure, making it difficult to see.

What's happening is that the default antialiasing cannot discern such fine
lined patterns. Also that the rays being traced eventually have a limitation
at a small scale. What you can do to improve it is use more ray depth, +r4
or more will help. And you should probably use +a0.2 or less too. Read the
documentation section on antialiasing, 5.2.6.4 Anti-aliasing Options for
more concise information.


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From: Christoph Hormann
Subject: Re: brick texture causes "patterns"
Date: 10 Feb 2003 15:11:33
Message: <3E480775.6C9FD40B@gmx.de>
Philipp Fuerholz wrote:
> 
>  [Image]

This is a non-binary group, please don't post binary attachments here. 
For further information read the posings in
povray.announce.frequently-asked-questions

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 31 Dec. 2002 _____./\/^>_*_<^\/\.______


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From: Ib Rasmussen
Subject: Re: brick texture causes "patterns"
Date: 10 Feb 2003 15:15:32
Message: <3E4808AC.5090400@ibras.dk>
Philipp Fuerholz wrote:

> when rendering this image with the brick-textured block it produces some
> ugly pattern (best seen on the right one), does someone know how to avoid
> this
> I rendered it with Antialising set at 0.3


0.3, that is not antialiasing, that is test rendering :)

I use +aa0.01 +r6 when I do brick buildings, and I get some moire anyway.

/Ib


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From: Warp
Subject: Re: brick texture causes "patterns"
Date: 11 Feb 2003 05:47:13
Message: <3e48d4b0@news.povray.org>
Ib Rasmussen <ib### [at] ibrasdk> wrote:
> I use +aa0.01 +r6 when I do brick buildings, and I get some moire anyway.

  To get the best antialiasing, use "+a0.0 +am2".
  This is, naturally, quite slow. For a bit less-quality but faster
antialiasing use something like "+a0.1 +am2".

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -


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