POV-Ray : Newsgroups : povray.general : Scattering media on a white background? : Re: Scattering media on a white background? Server Time
5 Aug 2024 06:17:05 EDT (-0400)
  Re: Scattering media on a white background?  
From: Christopher James Huff
Date: 11 Nov 2002 16:04:14
Message: <chrishuff-A702A5.16035811112002@netplex.aussie.org>
In article <aj40tu8q8v3thkvjdoivmvqe9g8t18e6e2@4ax.com>,
 Peter Popov <pet### [at] vipbg> wrote:

> No, that's not true. The absorbed color should be the opposite in hue,
> but the same in brightness as the emitted one. Your suggestion would
> add less absorption for brighter emission and vice versa, which is not
> what is generally wanted.

There isn't really a "right" and "wrong" way...just rules of thumb that 
usually work. "Hue" is an artificial way of specifying an attribute of 
colors, there is no physical reason for emitting gasses to absorb light 
of the opposite hue. The colors being absorbed don't always match the 
color being emitted.

Actually, there is a "right" way, but it would require patching POV to 
addjust the dynamic range. The beams of light are brighter than the 
background, but the background is "white".


> There, we're even now :)

Heh, OK...

-- 
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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