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18 Nov 2024 08:14:46 EST (-0500)
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From:
Subject: isosurface like sor example
Date: 2 May 2002 08:16:09
Message: <ota2du8co9fknf78fqabrm55aqruu2jopc@4ax.com>
Nothing amazing in this picture. In fact the same picture can be obtained with
/scenes/objects/sor1.pov script. Only one difference - it is completly made
with isosurfaces instead of sor object.

Related posts:
http://news.povray.org/20p1du0a7ts1bcl84ikoae1ksfnksob9bg%404ax.com
http://news.povray.org/4mp1du4obelntvstdua4foq43q6n1tjgeu%404ax.com

ABX


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ic_sor.png


 

From: Hugo
Subject: Re: isosurface like sor example
Date: 2 May 2002 16:37:35
Message: <3cd1a38f$1@news.povray.org>
It seems these are very complex functions, so that's impressive. If they are
parametric isosurfaces, I guess the render time hits the roof? But a nice
addition to include in toturials, maybe even the Pov3.5 example files.
Together with Ingo's parametric mesh macro, these sor's could be superior to
the old sor keyword, because these will never have holes / errors when they
render.

Regards,
Hugo


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From: Mike Williams
Subject: Re: isosurface like sor example
Date: 2 May 2002 17:47:25
Message: <HpLaHDA6Lb08Ew6I@econym.demon.co.uk>
Wasn't it Hugo who wrote:
>It seems these are very complex functions, so that's impressive. If they are
>parametric isosurfaces, I guess the render time hits the roof? But a nice
>addition to include in toturials, maybe even the Pov3.5 example files.
>Together with Ingo's parametric mesh macro, these sor's could be superior to
>the old sor keyword, because these will never have holes / errors when they
>render.

I've had an example of a parametric technique to achieve this sort of
effect on my isosurface tutorial page for quite a while
<http://www.econym.demon.co.uk/isotut/splines.htm>

-- 
Mike Williams
Gentleman of Leisure


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From:
Subject: Re: isosurface like sor example
Date: 6 May 2002 05:59:17
Message: <htkcdu8e63t3cbgisrpstam5lutu0srgtq@4ax.com>
On Thu, 2 May 2002 22:41:57 +0200, "Hugo" <hua### [at] post3teledk> wrote:
> It seems these are very complex functions, so that's impressive. If they are
> parametric isosurfaces, I guess the render time hits the roof?

No, that's regular isosurfaces, not parametric{}. Render time is is
reasonably. Slower than traditional sor{}. IIRC this set of six objects took
two hours on my PII 233 with a lot of tasks. Note there is more than one
light_sources so it increase render time.

> But a nice
> addition to include in toturials, maybe even the Pov3.5 example files.
> Together with Ingo's parametric mesh macro, these sor's could be superior to
> the old sor keyword, because these will never have holes / errors when they
> render.

It was mainly designed for iso_csg library. Main adventage is that like other
isosurfaces it can be simple displaced.

ABX


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