ph::DielectricFresnel Class Reference

Dielectric-dielectric interface Fresnel effect. More...

#include <DielectricFresnel.h>

Inheritance diagram for ph::DielectricFresnel:

Public Member Functions
	DielectricFresnel (real iorOuter, real iorInner)
math::Spectrum	calcReflectance (real cosThetaIncident) const override=0
std::optional< math::Vector3R >	calcRefractDir (const math::Vector3R &I, const math::Vector3R &N) const
	Calculates the normalized refraction direction.
std::optional< real >	calcRefractCos (const math::Vector3R &I, const math::Vector3R &N) const
	Calculates the cosine (signed) of refraction direction. This method is similar to calcRefractDir(), but is slightly more efficient as it returns the cosine of refraction direction only.
real	getIorOuter () const
real	getIorInner () const
Public Member Functions inherited from ph::FresnelEffect
virtual	~FresnelEffect ()=default
math::Spectrum	calcTransmittance (real cosThetaIncident) const

Protected Attributes
real	m_iorOuter
real	m_iorInner

Detailed Description

Dielectric-dielectric interface Fresnel effect.

Fresnel effect where both inner and outer sides are dielectric.

Constructor & Destructor Documentation

DielectricFresnel()

ph::DielectricFresnel::DielectricFresnel	(	real	iorOuter,
		real	iorInner )

Member Function Documentation

calcReflectance()

math::Spectrum ph::DielectricFresnel::calcReflectance ( real cosThetaIncident ) const

overridepure virtual

Parameters

cosThetaIncident

Cosine of the incident angle.

Returns

The reflectance of the interface on the specified angle.

Note

cosThetaIncident is signed, so inner and outer sides can be determined.

Implements ph::FresnelEffect.

Implemented in ph::ExactDielectricFresnel, and ph::SchlickApproxDielectricFresnel.

calcRefractCos()

std::optional< real > ph::DielectricFresnel::calcRefractCos	(	const math::Vector3R &	I,
		const math::Vector3R &	N ) const

Calculates the cosine (signed) of refraction direction. This method is similar to calcRefractDir(), but is slightly more efficient as it returns the cosine of refraction direction only.

Parameters

I	The normalized incident direction. Pointing away from the interface.
N	The normalized normal. Pointing to the outer side of the interface.

Returns

The cosine of the angle between refraction direction and N. May be empty if refraction is not possible, e.g., due to TIR.

calcRefractDir()

std::optional< math::Vector3R > ph::DielectricFresnel::calcRefractDir	(	const math::Vector3R &	I,
		const math::Vector3R &	N ) const

Calculates the normalized refraction direction.

Parameters

I	The normalized incident direction. Pointing away from the interface.
N	The normalized normal. Pointing to the outer side of the interface.

Returns

The normalized refraction direction. May be empty if refraction is not possible, e.g., due to TIR.

getIorInner()

real ph::DielectricFresnel::getIorInner ( ) const

inline

getIorOuter()

real ph::DielectricFresnel::getIorOuter ( ) const

inline

Member Data Documentation

m_iorInner

real ph::DielectricFresnel::m_iorInner

protected

m_iorOuter

real ph::DielectricFresnel::m_iorOuter

protected

---

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

• Source/Core/SurfaceBehavior/Property/DielectricFresnel.h
• Source/Core/SurfaceBehavior/Property/DielectricFresnel.cpp