POV-Ray : Newsgroups : povray.binaries.images : help, how to smooth isosurface~ Server Time
16 Nov 2024 07:12:59 EST (-0500)
  help, how to smooth isosurface~ (Message 1 to 6 of 6)  
From: lien0n
Subject: help, how to smooth isosurface~
Date: 29 Nov 2005 07:40:00
Message: <web.438c4b1d43201a93598059850@news.povray.org>
the isosurface was created from a 32x32x32 density file(.df3), and there are
small patches on the surface, as you can see on the image. i want to get it
smoothed, but how to do?

i am on a window's machine, and i can't open Mike Williams' isosurface
tutorial webpage.

thanks~


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From: Alain
Subject: Re: help, how to smooth isosurface~
Date: 30 Nov 2005 19:46:37
Message: <438e47ed$1@news.povray.org>
lien0n nous apporta ses lumieres en ce 2005-11-29 07:36:
> the isosurface was created from a 32x32x32 density file(.df3), and there are
> small patches on the surface, as you can see on the image. i want to get it
> smoothed, but how to do?
> 
> i am on a window's machine, and i can't open Mike Williams' isosurface
> tutorial webpage.
> 
> thanks~
> 
> 
> 
> ------------------------------------------------------------------------
> 
You need a higher resolution DF3. Each voxel can be tought as a cube and there is no
interpolation 
netween them.

-- 
Alain
-------------------------------------------------
An idea is not responsible for the people who believe in it.


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From: lien0n
Subject: Re: help, how to smooth isosurface~
Date: 30 Nov 2005 21:30:00
Message: <web.438e5f8a2d5fa4bd598059850@news.povray.org>
Thanks, alain,

i tried with a df3 of 64x64x64, but still the same problem is appeared. And
it is not so easy to get higher resolution df3,

And it seems that Mike William have already done such interpolation in his
isosurface tutorial, but unfortunately, i can't open his webpage on my
machine cauze a system incompatible problem. Can anybody give me some
resources?


Alain <ele### [at] netscapenet> wrote:
> lien0n nous apporta ses lumieres en ce 2005-11-29 07:36:
> > the isosurface was created from a 32x32x32 density file(.df3), and there are
> > small patches on the surface, as you can see on the image. i want to get it
> > smoothed, but how to do?
> >
> > i am on a window's machine, and i can't open Mike Williams' isosurface
> > tutorial webpage.
> >
> > thanks~
> >
> >
> >
> > ------------------------------------------------------------------------
> >
> You need a higher resolution DF3. Each voxel can be tought as a cube and there is no
interpolation
> netween them.
>
> --
> Alain
> -------------------------------------------------
> An idea is not responsible for the people who believe in it.


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From: Mike Williams
Subject: Re: help, how to smooth isosurface~
Date: 1 Dec 2005 00:53:49
Message: <7vMdUWAA$ojDFwL5@econym.demon.co.uk>
Wasn't it lien0n who wrote:
>Thanks, alain,
>
>i tried with a df3 of 64x64x64, but still the same problem is appeared. And
>it is not so easy to get higher resolution df3,
>
>And it seems that Mike William have already done such interpolation in his
>isosurface tutorial, but unfortunately, i can't open his webpage on my
>machine cauze a system incompatible problem. Can anybody give me some
>resources?

I don't know of any way to smooth a df3 isosurface.

-- 
Mike Williams
Gentleman of Leisure


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From: lien0n
Subject: Re: help, how to smooth isosurface~
Date: 1 Dec 2005 05:50:00
Message: <web.438ed4ab2d5fa4bd598059850@news.povray.org>
oh, it's okay~~,mike~, so u do not need to reply my email,

Mike Williams <nos### [at] econymdemoncouk> wrote:
> Wasn't it lien0n who wrote:
> >Thanks, alain,
> >
> >i tried with a df3 of 64x64x64, but still the same problem is appeared. And
> >it is not so easy to get higher resolution df3,
> >
> >And it seems that Mike William have already done such interpolation in his
> >isosurface tutorial, but unfortunately, i can't open his webpage on my
> >machine cauze a system incompatible problem. Can anybody give me some
> >resources?
>
> I don't know of any way to smooth a df3 isosurface.
>
> --
> Mike Williams
> Gentleman of Leisure


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From: Marc Jacquier
Subject: Re: help, how to smooth isosurface~
Date: 2 Dec 2005 03:19:05
Message: <43900379$1@news.povray.org>

news:web.438c4b1d43201a93598059850@news.povray.org...
> the isosurface was created from a 32x32x32 density file(.df3), and there
are
> small patches on the surface, as you can see on the image. i want to get
it
> smoothed, but how to do?
>
> i am on a window's machine, and i can't open Mike Williams' isosurface
> tutorial webpage.
>
> thanks~
>
>
Not tested but
Don't you declare your .df3 as a pigment?
Can't you just interpolate this df3 as you'd do for a 2d bitmap?
As in the doc:
pigment
    {
        density_file df3 "filename.df3"
        [interpolate Type] [PIGMENT_MODIFIERS...]
    }

Marc


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