ProjectionLight Class Reference

#include <projection.h>

Inheritance diagram for ProjectionLight:

List of all members.

Public Member Functions
	ProjectionLight (const Transform &light2world, const Spectrum &intensity, const string &texname, float fov)
	~ProjectionLight ()
Spectrum	Sample_L (const Point &p, float pEpsilon, const LightSample &ls, float time, Vector *wi, float *pdf, VisibilityTester *vis) const
bool	IsDeltaLight () const
Spectrum	Projection (const Vector &w) const
Spectrum	Power (const Scene *) const
Spectrum	Sample_L (const Scene *scene, const LightSample &ls, float u1, float u2, float time, Ray *ray, Normal *Ns, float *pdf) const
float	Pdf (const Point &, const Vector &) const
Private Attributes
MIPMap< RGBSpectrum > *	projectionMap
Point	lightPos
Spectrum	Intensity
Transform	lightProjection
float	hither
float	yon
float	screenX0
float	screenX1
float	screenY0
float	screenY1
float	cosTotalWidth

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Detailed Description

Definition at line 38 of file projection.h.

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Constructor & Destructor Documentation

ProjectionLight::ProjectionLight	(	const Transform &	light2world,
		const Spectrum &	intensity,
		const string &	texname,
		float	fov
	)

Definition at line 33 of file projection.cpp.

References cosTotalWidth, hither, Intensity, lightPos, lightProjection, Light::LightToWorld, Perspective(), projectionMap, Radians(), ReadImage(), screenX0, screenX1, screenY0, screenY1, and yon.

ProjectionLight::~ProjectionLight

(

)

Definition at line 69 of file projection.cpp.

References projectionMap.

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Member Function Documentation

bool ProjectionLight::IsDeltaLight

(

)

const [inline, virtual]

Implements Light.

Definition at line 46 of file projection.h.

float ProjectionLight::Pdf	(	const Point &	,
		const Vector &
	)			const [virtual]

Implements Light.

Definition at line 124 of file projection.cpp.

Spectrum ProjectionLight::Power

(

const Scene *

)

const [virtual]

Implements Light.

Definition at line 97 of file projection.cpp.

References cosTotalWidth, Intensity, MIPMap< T >::Lookup(), M_PI, projectionMap, and SPECTRUM_ILLUMINANT.

Spectrum ProjectionLight::Projection

(

const Vector &

w

)

const

Definition at line 81 of file projection.cpp.

References hither, lightProjection, MIPMap< T >::Lookup(), projectionMap, screenX0, screenX1, screenY0, screenY1, SPECTRUM_ILLUMINANT, Light::WorldToLight, Point::x, Vector::x, Point::y, Vector::y, and Vector::z.

Referenced by Sample_L().

Spectrum ProjectionLight::Sample_L	(	const Scene *	scene,
		const LightSample &	ls,
		float	u1,
		float	u2,
		float	time,
		Ray *	ray,
		Normal *	Ns,
		float *	pdf
	)			const [virtual]

Implements Light.

Definition at line 114 of file projection.cpp.

References cosTotalWidth, Ray::d, INFINITY, Intensity, lightPos, Light::LightToWorld, Projection(), UniformConePdf(), UniformSampleCone(), and LightSample::uPos.

Spectrum ProjectionLight::Sample_L	(	const Point &	p,
		float	pEpsilon,
		const LightSample &	ls,
		float	time,
		Vector *	wi,
		float *	pdf,
		VisibilityTester *	vis
	)			const [virtual]

Implements Light.

Definition at line 70 of file projection.cpp.

References DistanceSquared(), Intensity, lightPos, Normalize(), Projection(), and VisibilityTester::SetSegment().

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Member Data Documentation

float ProjectionLight::cosTotalWidth [private]

Definition at line 60 of file projection.h.

Referenced by Power(), ProjectionLight(), and Sample_L().

float ProjectionLight::hither [private]

Definition at line 58 of file projection.h.

Referenced by Projection(), and ProjectionLight().

Spectrum ProjectionLight::Intensity [private]

Definition at line 56 of file projection.h.

Referenced by Power(), ProjectionLight(), and Sample_L().

Point ProjectionLight::lightPos [private]

Definition at line 55 of file projection.h.

Referenced by ProjectionLight(), and Sample_L().

Transform ProjectionLight::lightProjection [private]

Definition at line 57 of file projection.h.

Referenced by Projection(), and ProjectionLight().

MIPMap<RGBSpectrum>* ProjectionLight::projectionMap [private]

Definition at line 54 of file projection.h.

Referenced by Power(), Projection(), ProjectionLight(), and ~ProjectionLight().

float ProjectionLight::screenX0 [private]

Definition at line 59 of file projection.h.

Referenced by Projection(), and ProjectionLight().

float ProjectionLight::screenX1 [private]

Definition at line 59 of file projection.h.

Referenced by Projection(), and ProjectionLight().

float ProjectionLight::screenY0 [private]

Definition at line 59 of file projection.h.

Referenced by Projection(), and ProjectionLight().

float ProjectionLight::screenY1 [private]

Definition at line 59 of file projection.h.

Referenced by Projection(), and ProjectionLight().

float ProjectionLight::yon [private]

Definition at line 58 of file projection.h.

Referenced by ProjectionLight().

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

• projection.h
• projection.cpp