POV-Ray : Newsgroups : povray.general : Re: Big whopping sparks : Re: Big whopping sparks Server Time
3 Aug 2024 10:22:05 EDT (-0400)
  Re: Big whopping sparks  
From: Christopher James Huff
Date: 20 May 2004 00:53:27
Message: <cjameshuff-192642.23534319052004@news.povray.org>
In article <40ac06b8$1@news.povray.org>,
 "Dave VanHorn" <dva### [at] cedarnet> wrote:

> I'm confused.
> Reading on media, everything seems to be about fog-like behaviour, and not
> about emitting light.
> 
> I need Big Whopping Sparks that emit light.
> 
> See the latest in the images group, under "Big Whopping Sparks".

Emitting media glows, rather than absorbing or scattering light. If 
radiosity is on and "media on" is used, it will take media into account 
when computing radiosity lighting, and emitting media (or brightly lit 
scattering media) will cast a glow on nearby surfaces. (Media doesn't 
take radiosity into account, though...a bright surface won't illuminate 
nearby scattering media. That would be very slow, though it may be 
possible to make it reasonably fast with something like photon mapping.)

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/


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