#include <generalizedbsdf.h>

Public Member Functions
virtual bool	SampleDirection (const GeneralizedBSDFSampleQuery &query, const SurfaceGeometry &geom, GeneralizedBSDFSampleResult &result) const =0

virtual Math::Vec3	SampleAndEstimateDirection (const GeneralizedBSDFSampleQuery &query, const SurfaceGeometry &geom, GeneralizedBSDFSampleResult &result) const =0

virtual bool	SampleAndEstimateDirectionBidir (const GeneralizedBSDFSampleQuery &query, const SurfaceGeometry &geom, GeneralizedBSDFSampleBidirResult &result) const =0

virtual Math::Vec3	EvaluateDirection (const GeneralizedBSDFEvaluateQuery &query, const SurfaceGeometry &geom) const =0

virtual Math::PDFEval	EvaluateDirectionPDF (const GeneralizedBSDFEvaluateQuery &query, const SurfaceGeometry &geom) const =0

virtual int	BSDFTypes () const =0

Public Member Functions inherited from Asset
virtual bool	Load (const ConfigNode &node, const Assets &assets)=0

LM_PUBLIC_API std::string	ID () const

LM_HIDDEN_API void	SetID (const std::string &id)

Public Member Functions inherited from Component
virtual std::string	ComponentInterfaceTypeName () const =0

virtual std::string	ComponentImplTypeName () const =0

Public Member Functions inherited from SIMDAlignedType
void *	operator new (std::size_t size) throw (std::bad_alloc)

void	operator delete (void *p)

Detailed Description

Generalized BSDF. Offers interfaces for direction sampling and evaluation. Thanks to the class BSDF and direction component of light and camera can be sampled in the similar way.

Inheritance diagram for GeneralizedBSDF:

Member Function Documentation

virtual int GeneralizedBSDF::BSDFTypes ( ) const

pure virtual

Check if generalized BSDF is directionally degenerated. e.g. specular BSDFs or directional light

Return values

true	The BSDF is directionally degenerated.
false	The BSDF is not directionally degenerated.

Get generalized BSDF type. If the generalized BSDF has multiple types, e.g. SpecularReflection and SpecularReflection, a bitmask of these types are returned.

Returns: Types.

Implemented in DiffuseMirrorMixBSDF, TestBSDF, AreaLight, PerspectiveCamera, DiffuseBSDF, ThinLensCamera, ConstantEnvironmentLight, DielectricBSDF, PerfectMirrorBSDF, and StubBSDF.

virtual Math::Vec3 GeneralizedBSDF::EvaluateDirection	(	const GeneralizedBSDFEvaluateQuery &	query,
		const SurfaceGeometry &	geom
	)		const

pure virtual

Evaluate generalized BSDF.

Parameters

query	Query structure.
geom	Surface geometry.

Returns: Evaluated contribution.

Implemented in DiffuseMirrorMixBSDF, TestBSDF, AreaLight, PerspectiveCamera, DiffuseBSDF, ConstantEnvironmentLight, ThinLensCamera, DielectricBSDF, PerfectMirrorBSDF, and StubBSDF.

virtual Math::PDFEval GeneralizedBSDF::EvaluateDirectionPDF	(	const GeneralizedBSDFEvaluateQuery &	query,
		const SurfaceGeometry &	geom
	)		const

pure virtual

Evaluate directional PDF.

Parameters

query	Query structure.
geom	Surface geometry.

Returns: Evaluated PDF.

Implemented in DiffuseMirrorMixBSDF, TestBSDF, AreaLight, PerspectiveCamera, DiffuseBSDF, ConstantEnvironmentLight, ThinLensCamera, DielectricBSDF, PerfectMirrorBSDF, and StubBSDF.

virtual Math::Vec3 GeneralizedBSDF::SampleAndEstimateDirection	(	const GeneralizedBSDFSampleQuery &	query,
		const SurfaceGeometry &	geom,
		GeneralizedBSDFSampleResult &	result
	)		const

pure virtual

Sample and estimate direction. Computes f_s / p_{^}.

Parameters

query	Query structure.
geom	Surface geometry.
result	Sampled result.

Returns: Estimate.

Implemented in DiffuseMirrorMixBSDF, TestBSDF, AreaLight, PerspectiveCamera, DiffuseBSDF, ConstantEnvironmentLight, ThinLensCamera, DielectricBSDF, PerfectMirrorBSDF, and StubBSDF.

virtual bool GeneralizedBSDF::SampleAndEstimateDirectionBidir	(	const GeneralizedBSDFSampleQuery &	query,
		const SurfaceGeometry &	geom,
		GeneralizedBSDFSampleBidirResult &	result
	)		const

pure virtual

Sample and estimate direction bidirectionally. In addition to SampleAndEstimateDirection, this function calculates values in the opposite direction. This function is introduced in order to avoid nasty precision problem with specular BSDFs.

Parameters

query	Query structure.
geom	Surface geometry.
weights	Estimate.
results	Sampled results.

Return values

true	Succeeded to sample.
false	Failed to sample.

Implemented in DiffuseMirrorMixBSDF, TestBSDF, AreaLight, PerspectiveCamera, DiffuseBSDF, ConstantEnvironmentLight, ThinLensCamera, DielectricBSDF, PerfectMirrorBSDF, and StubBSDF.

virtual bool GeneralizedBSDF::SampleDirection	(	const GeneralizedBSDFSampleQuery &	query,
		const SurfaceGeometry &	geom,
		GeneralizedBSDFSampleResult &	result
	)		const

pure virtual

Sample outgoing vector. Given the input direction originated from the point on the surface #wi, the function samples outgoing vector #wo from the suited distribution in the solid angle measure.

Parameters

query	Query structure.
geom	Surface geometry.
result	Sampled result.

Return values

true	Succeeded to sample #wo.
false	Failed to sample #wo.

Implemented in AreaLight, PerspectiveCamera, DiffuseMirrorMixBSDF, DiffuseBSDF, ConstantEnvironmentLight, ThinLensCamera, DielectricBSDF, PerfectMirrorBSDF, TestBSDF, and StubBSDF.

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

/home/travis/build/hi2p-perim/lightmetrica/include/lightmetrica/generalizedbsdf.h

Public Member Functions

Detailed Description

Member Function Documentation