POV-Ray : Newsgroups : povray.general : index of refraction ("ior") fails to influence on _transmitted_ light Server Time
31 Jul 2024 10:24:48 EDT (-0400)
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From: chefboss
Subject: Re: index of refraction ("ior") fails to influence on _transmitted_light
Date: 18 Aug 2007 14:35:00
Message: <web.46c73aa5fe0e76b56f43f7c30@news.povray.org>
Anyhow: I (chefboss) was am the originator of the thread, and I might like
to find it fixed somehow. It still displays wrong, and I use browsers (not
newsreaders) for those pages here, with no cache and nothing like that.

Besides the suggested photon-mapping, although working better, brought me to
the next problem: speckled appearance of the transmitted light when ior
gives focal-point near the surface of the sphere, see 2 or 3 threads above,
(http://news.povray.org/povray.general/thread/%3Cweb.46c7386b86ebcca6f43f7c30%40news.povray.org%3E/)


Thorsten Froehlich <tho### [at] trfde> wrote:
> Christian Froeschlin wrote:
> > Tim Attwood wrote:
> >>> By the way: How comes that as the author of this question-page does
> >>> appear a
> >>> "Christian Froeschlin" (see http://news.povray.org/povray.general/ )?
> >>> He gave only a tiny comment, and I did author it (as it seems to me)(i'm
> >>> just asking).
> >>
> >>
> >> It's your newsreader.  The server had a few hours of downtime
> >> and lost a few messages because of a hardware problem,
> >> you need to reset your local copy of the newsgroup so you can
> >> re-download the headers.  Your message shows up correct for
> >> me.
> >
> > Well, actually it seems that the web interface of the forum
> > itself would need to update its local copies and/or overview
> > pages. Note that the overview page lists a title starting with
> > "re:", and that I have no interest in usurping your thread ;)
>
> The web interface keeps track of messages an auto-incremented index. Due to
> the crash when restoring some information those auto-counts can change in
> certain ways. For speed the web interface uses only that number (rather than
> the actual post id from the server) to sort messages*.
>
>  Thorsten, POV-Team
>
>
> * Before somebody asks: No, the date and time of a post won't work for
> sorting because they come from the posters' newsreaders and are hardly ever
> accurate (way too many people with wrong clock or timezone settings).


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From: Warp
Subject: Re: index of refraction ("ior") fails to influence on _transmitted_light
Date: 18 Aug 2007 14:53:08
Message: <46c74014@news.povray.org>
chefboss <chi### [at] manganese-bluecom> wrote:
> Besides the suggested photon-mapping, although working better, brought me to
> the next problem: speckled appearance of the transmitted light when ior
> gives focal-point near the surface of the sphere, see 2 or 3 threads above,

  Then you have to fine-tune the photon settings. Start by increasing the
photon count to see if it helps.

-- 
                                                          - Warp


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From: Simon
Subject: Re: index of refraction ("ior") fails to influence on _transmitted_light
Date: 21 Aug 2007 09:34:57
Message: <46caea01$1@news.povray.org>
just one observation - interior{I_GLASS} ?

"Warp" <war### [at] tagpovrayorg> wrote in message 
news:46c74014@news.povray.org...
> chefboss <chi### [at] manganese-bluecom> wrote:
>> Besides the suggested photon-mapping, although working better, brought me 
>> to
>> the next problem: speckled appearance of the transmitted light when ior
>> gives focal-point near the surface of the sphere, see 2 or 3 threads 
>> above,
>
>  Then you have to fine-tune the photon settings. Start by increasing the
> photon count to see if it helps.
>
> -- 
>                                                          - Warp


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