In article <39a59c03@news.povray.org>, "ZeroBlue" <zer### [at] swipnetse> 
wrote:

> Does Povray offer the correct model of light, intersecting a transparent
> surface, where it divides into one refracted beam and one reflected beam,
> whose strenght are varied depending on the incoming angle?
> 
> If this is an available feature, how do I set "correct" values? ie.
> realworld values for different materials.

It depends on what you mean by "correct"...there is no such thing as a 
perfect simulation of light. POV does not simulate polarization, 
interference, diffraction, etc. When it hits an object which is partly 
transparent and partly reflective, it traces a reflective ray and a 
refracted ray, whose directions and intensities depend on the 
characteristics of the texture at the intersection point.

If you are asking about angle-dependant reflection: standard POV does 
not support this (yet), but MegaPOV, an unofficial version, does include 
it. MegaPOV is available here: http://nathan.kopp.com/patched.htm
The documentation covers this feature, you should read it for an 
explanation of the new reflection features.

POV-Ray 3.5 (which should be released sometime this year) will support 
many of the new MegaPOV features, possibly including angle-dependant 
reflection.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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