In article <3e23f9ed$1@news.povray.org>,
 "Tim Nikias" <tim### [at] gmxde> wrote:

> It "does things"? What does it do? Just curious.

Take a ray entering a droplet for example: it hits the droplet surface 
and gets refracted, and is now inside the droplet. The next surface it 
hits is the glass, so it gets refracted as it should when going from 
water to glass. It is now inside the glass and the droplet. When it hits 
the other droplet surface, *no refraction is done*, but it leaves the 
droplet. (I think it still computes the texture, I'm not sure it should 
though.)
Now the ray has gone through the droplet, been refracted going from 
air/water and water/glass, and is now in the glass, just as it should be.


> Though doing that with blobs is still kinda difficult...

No more so than for any other object. The difficulty is more determined 
by the object you are placing the blobs on.

-- 
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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