POV-Ray : Newsgroups : moray.binaries : Emission Media Problem Server Time
19 May 2024 18:35:53 EDT (-0400)
  Emission Media Problem (Message 1 to 4 of 4)  
From: Corey Hammer
Subject: Emission Media Problem
Date: 16 Mar 2000 21:18:09
Message: <38D1974E.EA1E0267@condor.depaul.edu>
I'm doing a lightsaber with a green blade, but I need it with a white
background.  When I run the mdl with a white background, the blade is
invisible.  However, with a black background, it works exactly right,
and, as more white is added, the blade disappears.  How can I get the
emission color work right with a white background. BTW, this also
happens when any white object is placed behind the blade.


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From: Ken
Subject: Re: Emission Media Problem
Date: 16 Mar 2000 21:57:11
Message: <38D19EDB.AD87F24C@pacbell.net>
Corey Hammer wrote:
> 
> I'm doing a lightsaber with a green blade, but I need it with a white
> background.  When I run the mdl with a white background, the blade is
> invisible.  However, with a black background, it works exactly right,
> and, as more white is added, the blade disappears.  How can I get the
> emission color work right with a white background. BTW, this also
> happens when any white object is placed behind the blade.

On Mar. 3, 1999 there was a media based lightsabre posted to this
group. You might want to take a look at it for ideas.

-- 
Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Bob Hughes
Subject: Re: Emission Media Problem
Date: 17 Mar 2000 05:18:56
Message: <38d20690@news.povray.org>
What you're needing is 'absorption <1,0,1>' or something similar to that in
order to compliment the emission so the background gets those colors removed
leaving only green.

Bob

"Ken" <tyl### [at] pacbellnet> wrote in message
news:38D19EDB.AD87F24C@pacbell.net...
|
|
| Corey Hammer wrote:
| >
| > I'm doing a lightsaber with a green blade, but I need it with a white
| > background.  When I run the mdl with a white background, the blade is
| > invisible.  However, with a black background, it works exactly right,
| > and, as more white is added, the blade disappears.  How can I get the
| > emission color work right with a white background. BTW, this also
| > happens when any white object is placed behind the blade.
|
| On Mar. 3, 1999 there was a media based lightsabre posted to this
| group. You might want to take a look at it for ideas.
|
| --
| Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
| http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: ryan constantine
Subject: Re: Emission Media Problem
Date: 17 Mar 2000 13:08:10
Message: <38D27501.42C5CBDE@yahoo.com>
yeah, what bob said

Corey Hammer wrote:

> I'm doing a lightsaber with a green blade, but I need it with a white
> background.  When I run the mdl with a white background, the blade is
> invisible.  However, with a black background, it works exactly right,
> and, as more white is added, the blade disappears.  How can I get the
> emission color work right with a white background. BTW, this also
> happens when any white object is placed behind the blade.


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