celeritas::optical::SmearRoughnessSampler Class Reference

Sample a facet normal from a smear roughness model. More...

#include <SmearRoughnessSampler.hh>

Public Member Functions
CELER_FUNCTION	SmearRoughnessSampler (Real3 const &normal, real_type roughness)
	Construct from roughness and global normal.
template<class Engine >
CELER_FUNCTION Real3	operator() (Engine &rng) const
	Sample a facet normal via the smear roughness model.

Detailed Description

Sample a facet normal from a smear roughness model.

The smear roughness model is parameterized by a single roughness value in [0,1] where:

• 0 roughness is polished (specular spike reflection)
• 1 roughness is rough (diffuse reflection)

A smear direction is uniformly sampled within a sphere of radius 1, which is then scaled by the roughness parameter and added to the global normal.

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The documentation for this class was generated from the following file:

• SmearRoughnessSampler.hh