FresnelEffect.h

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#pragma once
 
#include "Math/Color/Spectrum.h"
 
#include <Common/primitive_type.h>
 
namespace ph
{
 
class FresnelEffect
{
public:
    virtual ~FresnelEffect() = default;
 
    virtual math::Spectrum calcReflectance(real cosThetaIncident) const = 0;
 
    math::Spectrum calcTransmittance(real cosThetaIncident) const;
};
 
inline math::Spectrum FresnelEffect::calcTransmittance(const real cosThetaIncident) const
{
    return calcReflectance(cosThetaIncident).complement();
}
 
}// end namespace ph