Phong Emitter lobe (elPhng)

key: elPhng

type: C

  1. color: radiant exitance (W/(m^2 nm)).
  2. color: phong exponent to control emitted power.


A Phong emitter to be used in an aggregate (smAgg) material. The phong exponent gives the power distribution as a function of the angle with the surface normal. An exponent of 1 indicates a diffuse source.

Directional emission distribution

Radiant intensity is proportional to cos^e theta where e is the phong exponent.


Not applicable.