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I've been working hard on that, and I still didn't manage to make one.
Any ideas?
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From: Christoph Hormann
Subject: Re: Colored Neon Lights that are real light sources.
Date: 1 Oct 2001 09:59:30
Message: <3BB87778.6BD9C98D@gmx.de>
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Eitan Tal wrote:
>
> I've been working hard on that, and I still didn't manage to make one.
> Any ideas?
You will have to be a bit more specific. Maybe just post your efforts in
p.b.i. and say what you think should be different.
Maybe also read:
http://www.students.tut.fi/~warp/povVFAQ/languageVFAQ.html#visiblelightsource
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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On Mon, 01 Oct 2001 15:38:27 +0200, Eitan Tal wrote...
> I've been working hard on that, and I still didn't manage to make one.
> Any ideas?
You could use a transparent cylinder filled with emitting media of the
appropriate colour and a cylindrical density, set the media obect to
no_shadow, and put a long, thin area light inside it.
If you want Neon sign style lettering, then a sphere_sweep in POV 3.5Beta
filled with media may be what you're after, but you'd have to use an
obscene number of point lights scattered along the length of yout 'tube'
to get the lighting effect.
At least I think that would work (Disclaimer: this is off the top of my
head and is by no means guaranteed to work...)
Bye for now,
Jamie.
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From: Bill DeWitt
Subject: Re: Colored Neon Lights that are real light sources.
Date: 1 Oct 2001 14:27:03
Message: <3bb8b577@news.povray.org>
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"Jamie Davison" <jam### [at] ntlworldcom> wrote :
>
> If you want Neon sign style lettering, then a sphere_sweep in POV 3.5Beta
> filled with media may be what you're after, but you'd have to use an
> obscene number of point lights scattered along the length of yout 'tube'
> to get the lighting effect.
A properly configured area_light might work for some neon signs, as long
as the neon doesn't have to illuminate something very near the sign. In that
case you need a grid or sweep of real lights.
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I want the simple cylinder (tube) neon light.
Bill DeWitt wrote:
> "Jamie Davison" <jam### [at] ntlworldcom> wrote :
> >
> > If you want Neon sign style lettering, then a sphere_sweep in POV 3.5Beta
> > filled with media may be what you're after, but you'd have to use an
> > obscene number of point lights scattered along the length of yout 'tube'
> > to get the lighting effect.
>
> A properly configured area_light might work for some neon signs, as long
> as the neon doesn't have to illuminate something very near the sign. In that
> case you need a grid or sweep of real lights.
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How do I make the area_light?
Bill DeWitt wrote:
> "Jamie Davison" <jam### [at] ntlworldcom> wrote :
> >
> > If you want Neon sign style lettering, then a sphere_sweep in POV 3.5Beta
> > filled with media may be what you're after, but you'd have to use an
> > obscene number of point lights scattered along the length of yout 'tube'
> > to get the lighting effect.
>
> A properly configured area_light might work for some neon signs, as long
> as the neon doesn't have to illuminate something very near the sign. In that
> case you need a grid or sweep of real lights.
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From: Bill DeWitt
Subject: Re: Colored Neon Lights that are real light sources.
Date: 1 Oct 2001 16:32:21
Message: <3bb8d2d5$1@news.povray.org>
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"Eitan Tal" <eit### [at] netvisionnetil> wrote in message
news:3BB8BEF1.E6344A7D@netvision.net.il...
> I want the simple cylinder (tube) neon light.
Do you mean a white florescent light, or the red or multi-colored neon
light which may be bent into shapes and words?
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On Mon, 1 Oct 2001 16:32:15 -0400, Bill DeWitt wrote:
>
>"Eitan Tal" <eit### [at] netvisionnetil> wrote in message
>news:3BB8BEF1.E6344A7D@netvision.net.il...
>> I want the simple cylinder (tube) neon light.
>
> Do you mean a white florescent light, or the red or multi-colored neon
>light which may be bent into shapes and words?
>
>
Exactly. When I hear "neon light" I think of something like this:
--
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}
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> >> I want the simple cylinder (tube) neon light.
> >
> > Do you mean a white florescent light, or the red or multi-colored neon
> >light which may be bent into shapes and words?
> >
> >
> Exactly. When I hear "neon light" I think of something like this:
Nice :)
And I was assuming that because he said neon rather than fluorescent,
that he wanted to do the transparent glass tube full of noble gas at low
pressure with a high voltage low amperage current passed through it.
Maybe I assumed wrong. :)
Bye for now,
Jamie.
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> How do I make the area_light?
Read the docs.
Type the apropriate source code.
Click render.
:)
Bye for now,
Jamie.
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