POV-Ray : Newsgroups : povray.general : YAGOM (Yet Another Ghost Object Method) Server Time
1 Nov 2024 21:21:42 EDT (-0400)
  YAGOM (Yet Another Ghost Object Method) (Message 1 to 5 of 5)  
From: Robert Dawson
Subject: YAGOM (Yet Another Ghost Object Method)
Date: 15 Jul 1999 13:50:18
Message: <378e1f5a@news.povray.org>
Without testing this (I have a large slow render running at the moment),
I hereby add another
plausible method to generate shadows without an apparent casting object:

    difference{
        object{MyGhostCaster}
        sphere{<0,0,0>,10 no_shadow}  /*chosen to contain the GhostCaster*/
              }

    If this works as I think it will, the sphere will completely annihilate
the object, but
be omitted from shadow calculations...  Anybody want to confirm this?

    -Robert Dawson


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From: Zeger Knaepen
Subject: Re: YAGOM (Yet Another Ghost Object Method)
Date: 15 Jul 1999 19:06:13
Message: <378e6965@news.povray.org>
Doesn't seem to work.  Too bad.
(Or I've done something wrong)

ZK


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From: Robert Dawson
Subject: Re: YAGOM (Yet Another Ghost Object Method)
Date: 16 Jul 1999 10:19:44
Message: <378f3f80@news.povray.org>
Zeger Knaepen <zeg### [at] hotmailcom> wrote in message
news:378e6965@news.povray.org...
> Doesn't seem to work.  Too bad.
> (Or I've done something wrong)

    Bother, you're right. <grin>  Well, it seemed like a good idea at the
time.

-Robert


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From: Fabien Mosen
Subject: Re: YAGOM (Yet Another Ghost Object Method)
Date: 16 Jul 1999 12:39:35
Message: <378F5FFB.45BB332B@skynet.be>
Robert Dawson wrote:
> 
> Zeger Knaepen <zeg### [at] hotmailcom> wrote in message
> news:378e6965@news.povray.org...
> > Doesn't seem to work.  Too bad.
> > (Or I've done something wrong)
> 
>     Bother, you're right. <grin>  Well, it seemed like a good idea at the
> time.
> 
> -Robert

I have another idea that might work : use the "passes-trough" feature
in Superpatch with a NEGATIVE (White*-1) light, it should do the
trick...

Fabien.


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From: Ron Parker
Subject: Re: YAGOM (Yet Another Ghost Object Method)
Date: 16 Jul 1999 12:49:01
Message: <378f627d@news.povray.org>
On Fri, 16 Jul 1999 18:38:19 +0200, Fabien Mosen wrote:
>I have another idea that might work : use the "passes-trough" feature
>in Superpatch with a NEGATIVE (White*-1) light, it should do the
>trick...

But that's cheating.  That feature was designed to produce unnatural
lighting effects.


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