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20 Nov 2024 12:25:13 EST (-0500)
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From: Arne Kleinophorst
Subject: Visible reflected Light-Beam?
Date: 14 May 2003 15:46:51
Message: <3ec29d2b$1@news.povray.org>
Hello,

I'm looking for a way to make the reflection of a light beam visible? is 
it possible with media and or photons. I do get an original light beam 
from a source but i can't reflect it.

TIA

Arne


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From: Gilles Tran
Subject: Re: Visible reflected Light-Beam?
Date: 14 May 2003 16:44:32
Message: <3ec2aab0@news.povray.org>

news: 3ec29d2b$1@news.povray.org...

> I'm looking for a way to make the reflection of a light beam visible? is
> it possible with media and or photons. I do get an original light beam
> from a source but i can't reflect it.

See my post "photon problem" a few messages ago and replace the cylinder
spotlight by a regular spotlight. Tweak the radius and falloff value and it
should work.

G.


--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters


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From: Hugo Asm
Subject: Re: Visible reflected Light-Beam?
Date: 14 May 2003 16:50:48
Message: <3ec2ac28@news.povray.org>
> I'm looking for a way to make the reflection of a light beam
> visible? is it possible with media and or photons.

Media can make the beam visible like dust in the air. Photons can make
caustics through glassy materials. (These are short answers.)

> I do get an original light beam from a source
> but i can't reflect it.

Hmm. When you say "reflection" one can assume two things: You either want a
mirror effect (a very clear reflection) or you want diffuse reflections,
like a bulp that lights up a whole room and nearby rooms. I can't determine
what you're after. If you want mirror effects, try making a "visible" light
source, for example a white sphere, because light sources are actually
invisible.  :o)  If you want diffuse reflections, try radiosity. There are a
good standard include file for POV-Ray to set all the parameters of
radiosity for you.

Hope this helps?

Regards,
Hugo


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From: Arne Kleinophorst
Subject: Re: Visible reflected Light-Beam?
Date: 15 May 2003 05:25:14
Message: <3ec35cfa@news.povray.org>
Thank you, just another proof for me that you a some kind of Povray God :)

Arne

Gilles Tran wrote:

> news: 3ec29d2b$1@news.povray.org...
> 
> 
>>I'm looking for a way to make the reflection of a light beam visible? is
>>it possible with media and or photons. I do get an original light beam
>>from a source but i can't reflect it.
> 
> 
> See my post "photon problem" a few messages ago and replace the cylinder
> spotlight by a regular spotlight. Tweak the radius and falloff value and it
> should work.
> 
> G.
> 
> 
> --
> **********************
> http://www.oyonale.com
> **********************
> - Graphic experiments
> - POV-Ray and Poser computer images
> - Posters
> 
> 
>


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