[comp.graphics] Basic questions about NFF format

yk4@cunixb.cc.columbia.edu (Yong Su Kim) (02/03/91)

I'm playing around with raytracing images using the NFF format and I
would be grateful if someone could help me with a couple of the terms.

hither - What does this affect?
Kd ( diffuse component ) - How does this affect the surface, and what
	are the units?
Ks ( specular ) - How does this affect the surface, and what are the units?
Shine ( Phong cosine power ) - What is this, and what are the units?
T ( Transmittance ) - What are the units?
index of refraction - What are the units?

Thanks.
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