Light Class Reference

#include <light.h>

Inheritance diagram for Light:

List of all members.

Public Member Functions
virtual	~Light ()
	Light (const Transform &l2w, int ns=1)
virtual Spectrum	Sample_L (const Point &p, Vector *wi, VisibilityTester *vis) const =0
virtual Spectrum	Power (const Scene *) const =0
virtual bool	IsDeltaLight () const =0
virtual Spectrum	Le (const RayDifferential &r) const
virtual Spectrum	Sample_L (const Point &p, float u1, float u2, Vector *wi, float *pdf, VisibilityTester *vis) const =0
virtual float	Pdf (const Point &p, const Vector &wi) const =0
virtual Spectrum	Sample_L (const Point &p, const Normal &n, float u1, float u2, Vector *wi, float *pdf, VisibilityTester *visibility) const
virtual float	Pdf (const Point &p, const Normal &n, const Vector &wi) const
virtual Spectrum	Sample_L (const Scene *scene, float u1, float u2, float u3, float u4, Ray *ray, float *pdf) const =0
Public Attributes
const int	nSamples
Protected Attributes
const Transform	LightToWorld
const Transform	WorldToLight

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Detailed Description

Definition at line 34 of file light.h.

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Constructor & Destructor Documentation

Light::~Light

(

)

[virtual]

Definition at line 28 of file light.cpp.

Light::Light	(	const Transform &	l2w,
		int	ns = 1
	)			[inline]

Definition at line 38 of file light.h.

References Warning().

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Member Function Documentation

virtual Spectrum Light::Sample_L	(	const Point &	p,
		Vector *	wi,
		VisibilityTester *	vis
	)			const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

Referenced by EstimateDirect(), SingleScattering::Li(), PhotonIntegrator::Preprocess(), IGIIntegrator::Preprocess(), and ExPhotonIntegrator::Preprocess().

virtual Spectrum Light::Power

(

const Scene *

)

const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

virtual bool Light::IsDeltaLight

(

)

const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

Referenced by EstimateDirect().

Spectrum Light::Le

(

const RayDifferential &

r

)

const [virtual]

Reimplemented in InfiniteAreaLight, and InfiniteAreaLightIS.

Definition at line 41 of file light.cpp.

Referenced by EstimateDirect().

virtual Spectrum Light::Sample_L	(	const Point &	p,
		float	u1,
		float	u2,
		Vector *	wi,
		float *	pdf,
		VisibilityTester *	vis
	)			const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

virtual float Light::Pdf	(	const Point &	p,
		const Vector &	wi
	)			const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

Referenced by EstimateDirect().

virtual Spectrum Light::Sample_L	(	const Point &	p,
		const Normal &	n,
		float	u1,
		float	u2,
		Vector *	wi,
		float *	pdf,
		VisibilityTester *	visibility
	)			const [inline, virtual]

Reimplemented in AreaLight, and InfiniteAreaLight.

Definition at line 58 of file light.h.

virtual float Light::Pdf	(	const Point &	p,
		const Normal &	n,
		const Vector &	wi
	)			const [inline, virtual]

Reimplemented in AreaLight, and InfiniteAreaLight.

Definition at line 63 of file light.h.

virtual Spectrum Light::Sample_L	(	const Scene *	scene,
		float	u1,
		float	u2,
		float	u3,
		float	u4,
		Ray *	ray,
		float *	pdf
	)			const [pure virtual]

Implemented in AreaLight, DistantLight, GonioPhotometricLight, InfiniteAreaLight, InfiniteAreaLightIS, PointLight, ProjectionLight, and SpotLight.

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Member Data Documentation

const int Light::nSamples

Definition at line 71 of file light.h.

Referenced by CreateAreaLight(), CreateLight(), PhotonIntegrator::RequestSamples(), IrradianceCache::RequestSamples(), IGIIntegrator::RequestSamples(), ExPhotonIntegrator::RequestSamples(), and DirectLighting::RequestSamples().

const Transform Light::LightToWorld [protected]

Definition at line 74 of file light.h.

Referenced by DistantLight::DistantLight(), GonioPhotometricLight::GonioPhotometricLight(), PointLight::PointLight(), ProjectionLight::ProjectionLight(), SpotLight::Sample_L(), ProjectionLight::Sample_L(), InfiniteAreaLightIS::Sample_L(), and SpotLight::SpotLight().

const Transform Light::WorldToLight [protected]

Definition at line 74 of file light.h.

Referenced by SpotLight::Falloff(), InfiniteAreaLightIS::Le(), InfiniteAreaLight::Le(), InfiniteAreaLightIS::Pdf(), ProjectionLight::Projection(), and GonioPhotometricLight::Scale().

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

• light.h
• light.cpp