SpotLight Class Reference

Inheritance diagram for SpotLight:

List of all members.

Public Member Functions
	SpotLight (const Transform &light2world, const Spectrum &, float width, float fall)
Spectrum	Sample_L (const Point &p, Vector *wi, VisibilityTester *vis) const
bool	IsDeltaLight () const
float	Falloff (const Vector &w) const
Spectrum	Power (const Scene *) const
Spectrum	Sample_L (const Point &P, float u1, float u2, Vector *wo, float *pdf, VisibilityTester *visibility) const
Spectrum	Sample_L (const Scene *scene, float u1, float u2, float u3, float u4, Ray *ray, float *pdf) const
float	Pdf (const Point &, const Vector &) const
Private Attributes
float	cosTotalWidth
float	cosFalloffStart
Point	lightPos
Spectrum	Intensity

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Detailed Description

Definition at line 29 of file spot.cpp.

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Constructor & Destructor Documentation

SpotLight::SpotLight	(	const Transform &	light2world,
		const Spectrum &	intensity,
		float	width,
		float	fall
	)

Definition at line 52 of file spot.cpp.

References cosFalloffStart, cosTotalWidth, Intensity, lightPos, Light::LightToWorld, and Radians().

Referenced by CreateLight().

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Member Function Documentation

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

Implements Light.

Definition at line 60 of file spot.cpp.

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

Referenced by Sample_L().

bool SpotLight::IsDeltaLight

(

)

const [inline, virtual]

Implements Light.

Definition at line 34 of file spot.cpp.

float SpotLight::Falloff

(

const Vector &

w

)

const

Definition at line 67 of file spot.cpp.

References cosFalloffStart, cosTotalWidth, Normalize(), Light::WorldToLight, and Vector::z.

Referenced by Sample_L().

Spectrum SpotLight::Power

(

const Scene *

)

const [inline, virtual]

Implements Light.

Definition at line 36 of file spot.cpp.

References cosFalloffStart, cosTotalWidth, Intensity, and M_PI.

Spectrum SpotLight::Sample_L	(	const Point &	P,
		float	u1,
		float	u2,
		Vector *	wo,
		float *	pdf,
		VisibilityTester *	visibility
	)			const [virtual]

Implements Light.

Definition at line 79 of file spot.cpp.

References Sample_L().

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

Implements Light.

Definition at line 87 of file spot.cpp.

References cosTotalWidth, Ray::d, Falloff(), Intensity, lightPos, Light::LightToWorld, Ray::o, UniformConePdf(), and UniformSampleCone().

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

Implements Light.

Definition at line 84 of file spot.cpp.

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Member Data Documentation

float SpotLight::cosTotalWidth [private]

Definition at line 47 of file spot.cpp.

Referenced by Falloff(), Power(), Sample_L(), and SpotLight().

float SpotLight::cosFalloffStart [private]

Definition at line 47 of file spot.cpp.

Referenced by Falloff(), Power(), and SpotLight().

Point SpotLight::lightPos [private]

Definition at line 48 of file spot.cpp.

Referenced by Sample_L(), and SpotLight().

Spectrum SpotLight::Intensity [private]

Definition at line 49 of file spot.cpp.

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

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

• spot.cpp