POV-Ray: Newsgroups: povray.general: Photons, mirrors and spotlights

POV-Ray : Newsgroups : povray.general : Photons, mirrors and spotlights		Server Time 31 Oct 2024 10:20:33 EDT (-0400)

From: Reynald
Subject: Photons, mirrors and spotlights
Date: 3 Nov 2005 16:35:01
Message: <web.436a80de7ffc336a4102b4e50@news.povray.org>

Hi, I have a scene with a light beam reflected in a mirror. The beam is made
visible in a media. See details and code here ("Question 3" in the middle of
the page): http://weblog.sitewww.ch/index.php?start_from=45

Everything is OK except when I use spotlights instead of cylinderlights. In
that case the beam disappears after being reflected in the mirror.
Any explanation/suggestion would be a great help since I'm working on it
since weeks... Thanks in advance.

Reynald
[http://weblog.sitewww.ch]

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From: Reynald
Subject: Re: Photons, mirrors and spotlights
Date: 4 Nov 2005 16:35:00
Message: <web.436bd3ea11838d443783f8c20@news.povray.org>

OK, it's solved thanks to Greg...
Clearly photons do not like the "looks_like" statement in the light source
block.

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From: Warp
Subject: Re: Photons, mirrors and spotlights
Date: 5 Nov 2005 03:14:01
Message: <436c69c9@news.povray.org>

Reynald <rpa### [at] bluewinch> wrote:
> OK, it's solved thanks to Greg...
> Clearly photons do not like the "looks_like" statement in the light source
> block.

  Did you try adding a "photons { pass_through }" to the object in the
looks_like block?

-- 
                                                          - Warp

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From: Reynald
Subject: Re: Photons, mirrors and spotlights
Date: 6 Nov 2005 16:05:01
Message: <web.436e6e1211838d448a80dddc0@news.povray.org>

>   Did you try adding a "photons { pass_through }" to the object in the
> looks_like block?
>

Yes, but in this case "photons { pass_through }" do not change anything!

Ah...Youpiii... that's it: add "holow" to the object in the looks_like
block.

Reynald

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