It's strange what things can inspire you when your brain's been
operpoved.

Being the type of person who thinks sunlight is just an annoying glare
in the window, I recently nailed blankeds on the windows  of my room.
(curtains have a transmit of about 0.4 and that's way too much.) This
morning, while I was reading posts, a perky sunray somehow broke in
and lit up the room with soft, indirect, diffusely interreflected,
hard-to-model light. Moreover, some of it hit the top of the
indescribable plastic thing sitting on my monitor (along with an
wooden model of A'Tuin) and produced some really nice caustics on the
oscilloscope gathering dust at the top shelf, then some of it bounced
off again from the oscilloscope screen and produced some really nice
caustics on the ceiling that flickered gently as I was clicking the
keyboard. The other part of the ray hit the side of the aforementioned
plastic thing (which is actually the case of a small mechanical
counter saying " '95: wasted; repairable") and pierced the aquarium
right through the stream of bubbles, and the beauty of the spectral
caustics resulting in this rendered any attemped description
incomplete. The fun really began when I moved my hand (probably to rub
my eyes :) ) and the ray bounced off it and lit half the room! I never
knew that human skin was so much diffusely reflective. The mere two or
three square inches of my palm that were lit by the sun acted as a
real light source, progucing nice shadows (kinda too sharp to be real
:) ), specular reflections in the heating pipes and even caustics off
my recently polished guitar deck that gleamed on the painting on the
wall. Impressive what a 1  x 30 in light ray can do :)

Now the question is, how the heck do I model all that in just a
lifetime? And how many Cray supercomputers will I need to render it?

Any help appreciated.

--Peter

P.S. Based on the still going "Where are you..." thread, most of you
guys are Americans, so I did some conversions to spare the majority
the trouble to do so. 1 in = 2.5402 cm  1 cm =  0.3937 in :)

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Peter Popov schrieb in Nachricht <36cd1c53.13142319@news.povray.org>...

>Moreover, some of it hit the top of the
>indescribable plastic thing sitting on my monitor (along with an
>wooden model of A'Tuin)

You have a wooden model of A'Tuin? Where did you get that? BTW do you know
of anyone who tried to model the Discworld in POV-Ray?

--
Rudy Velthuis

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Rudy Velthuis wrote in message <36ce862e.0@news.povray.org>...
>
>You have a wooden model of A'Tuin? Where did you get that? BTW do you know
>of anyone who tried to model the Discworld in POV-Ray?


If you mean an image with a Pratchett theme, there was one in the "magic"
round of the IRTC. I don't know of any images of the entire Discworld,
though. Maybe somebdy will risk copyright infringement again and does it for
this round...

Margus

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Margus Ramst schrieb in Nachricht <36ceba21.0@news.povray.org>...

>If you mean an image with a Pratchett theme, there was one in the "magic"
>round of the IRTC. I don't know of any images of the entire Discworld,
>though. Maybe somebdy will risk copyright infringement again and does it
for
>this round...

What exactly do you mean by "copyright infringement _again_"?

--
Rudy Velthuis

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Rudy Velthuis wrote in message <36cf10c2.0@news.povray.org>...
>
>What exactly do you mean by "copyright infringement _again_"?
>
I mean _risk_ again. Like putting Mickey Mouse or Coke in your image. If you
haven't done so, check out "usage of commercial logos" thread in
irtc.general.

Margus

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Let me just say that you may want to check out my photon mapping patch once
I make a public beta available.

-Nathan Kopp

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I don't think there's a POVer alive who wouldn't want to check it out. Now
stop teasing!

Margus

Nathan Kopp wrote in message <36CF1BDD.6F08F75C@Kopp.com>...
>Let me just say that you may want to check out my photon mapping patch once
>I make a public beta available.
>
>-Nathan Kopp

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I've always used a cupped palm to focus dim light into a spot I needed
to see, don't know where I got this from but it's like placing your hand
above your eyes in bright light to shade your eyes as a reflex almost.
Similar thing occurs when you block a light from a shadowy place your
trying to see to adjust your eyes to the darkness there.
Sorry, I wouldn't be much help with that much of a "capture reality"
rendering, especially if you think it might take a lifetime and a cray.
And, hey, I'm both American and *semi*-metric, if that counts for
anything.


Peter Popov wrote:
> 
> The fun really began when I moved my hand (probably to rub
> my eyes :) ) and the ray bounced off it and lit half the room! I never
> knew that human skin was so much diffusely reflective. The mere two or
> three square inches of my palm that were lit by the sun acted as a
> real light source, producing nice shadows
> 
> Now the question is, how the heck do I model all that in just a
> lifetime? And how many Cray supercomputers will I need to render it?
> 
> Any help appreciated.
> 
> --Peter
> 
> P.S. Based on the still going "Where are you..." thread, most of you
> guys are Americans, so I did some conversions to spare the majority
> the trouble to do so. 1 in = 2.5402 cm  1 cm =  0.3937 in :)

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/POVring.htm
 mailto:inv### [at] aolcom?PoV

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Bob Hughes wrote:

> And, hey, I'm both American and *semi*-metric, if that counts for anything.

I got a set of them "metric" wrenches once. That metric company needs
to improve their product. The darn things were just too sloppy and
rounded the corners on the hex nuts. Your not assiociated with them
by any chance are you ? I want my money back !

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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On Sat, 20 Feb 1999 15:32:29 -0500, Nathan Kopp <Nat### [at] Koppcom>
wrote:

>Let me just say that you may want to check out my photon mapping patch once
>I make a public beta available.
>
>-Nathan Kopp

Of course I will! After all, it was because you beat me to it that I
gave up doing my virtual light sources patch. You mentioned once that
you implemented faked (not using real wavelengths, of coz) dispersion
in your patch. That's nice. Now the question is, what amound of
photons do I have to shoot from the sun so that a reasonable number of
them passes through a 1 inch wide slit, hits my palm and illuminates
the room with radiosity, caustics and dispersion at that? Maybe you
should incorporate some way to explicitly specify higher concentration
of the photons where they are needed.

Peter
---------
Peter Popov
ICQ: 15002700

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