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I lost a lot of POV scenes whilst formatting my drive (well, duh!!), but
I did have a copy of an old one I did involving reflecting photons. I
was bored last night and decided to work on it. You will notice that
there are a few artifacts here, not from compression, but more from the
way MPOV handles photons ( I am guessing). Specifically, check out the
rays at the last mirror, where they become vertical, I know the banding
effect _should_ not happen, but it is cool none the less. Are there
plans either in pov 3.5 or mpov v0.7 (?) to allow photons to work with
cylindrical lights? I Find that using a spotlight was ok, but the beam
gets broader due to magnification of the small cone angle etc....
Anywho,I ramble, enjoy!
-paul
--
-------------------------------------------#
Paul Daniel Jones
120 Chandlee Laboratory
Penn State University
814-865-2090
pdj### [at] psu edu
http://research.chem.psu.edu/glassgrp/paul
--------------------------------------------#
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Attachments:
Download 'optic.jpg' (94 KB)
Preview of image 'optic.jpg'
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in <3A6D8C61.E10252D7@psu.edu> Paul Daniel Jones wrote:
>....
>I Find that using a spotlight was ok, but the beam
>gets broader due to magnification of the small cone angle etc....
>
You could create a paralel bundle of photons by creating a lens and put a
lightsource in its focal point.
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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cool , would you post the source?
--
Rick
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It is curious that the banding effect seems to start and stop on the
bounderies where the walls meet the floor.
Great scene though. Takes me back to when I dabbled in homeade holography. I
love optics.
Jay
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HI,
Paul Daniel Jones schrieb:
>
> I lost a lot of POV scenes whilst formatting my drive (well, duh!!), but
Be happy, you are not alone - I did the same 2 month ago :)
Stefan
--
http://home.t-online.de/home/StefanWz/
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I was thinking the same thing.
"Jay Raney" <jay### [at] igilesnet> wrote in message
news:3A6CE3FB.70C11FBB@igiles.net...
> It is curious that the banding effect seems to start and stop on the
> bounderies where the walls meet the floor.
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Bill Bill Bill Bill
Bill Nye the Science Guy
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David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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Paul Daniel Jones wrote:
> I lost a lot of POV scenes whilst formatting my drive (well, duh!!), but
> I did have a copy of an old one I did involving reflecting photons. I
> was bored last night and decided to work on it. You will notice that
> there are a few artifacts here, not from compression, but more from the
> way MPOV handles photons ( I am guessing). Specifically, check out the
> rays at the last mirror, where they become vertical, I know the banding
> effect _should_ not happen, but it is cool none the less.
My bet is that the banding comes from the way media is sampled (you're
using method 2 or 3 aren't you?). You can probably remove it by adding a
transparent hollow cylinder around the light or a properly placed plane
to increase the number of samples taken near the light beam...
Jerome
--
* Abandon the search for truth, * mailto:ber### [at] inamecom
* Settle for a good fantasy. * http://www.enst.fr/~jberger
*********************************
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