lux::SpotLight Class Reference

#include <spot.h>

Inheritance diagram for lux::SpotLight:

Collaboration diagram for lux::SpotLight:

Public Member Functions
	SpotLight (const Transform &light2world, const boost::shared_ptr< Texture< SWCSpectrum > > L, float gain, float width, float fall)
virtual	~SpotLight ()
virtual bool	IsDeltaLight () const
virtual bool	IsEnvironmental () const
float	Falloff (const Vector &w) const
virtual SWCSpectrum	Power (const TsPack tspack, const Scene ) const
virtual SWCSpectrum	Sample_L (const TsPack tspack, const Point &P, float u1, float u2, float u3, Vector wo, float pdf, VisibilityTester visibility) const
virtual SWCSpectrum	Sample_L (const TsPack tspack, const Scene scene, float u1, float u2, float u3, float u4, Ray ray, float pdf) const
virtual float	Pdf (const Point &, const Vector &) const
virtual float	Pdf (const Point &p, const Normal &n, const Point &po, const Normal &ns) const
virtual bool	Sample_L (const TsPack tspack, const Scene scene, float u1, float u2, float u3, BSDF *bsdf, float pdf, SWCSpectrum *Le) const
virtual bool	Sample_L (const TsPack tspack, const Scene scene, const Point &p, const Normal &n, float u1, float u2, float u3, BSDF *bsdf, float pdf, float pdfDirect, VisibilityTester visibility, SWCSpectrum *Le) const
virtual SWCSpectrum	Le (const TsPack tspack, const Scene scene, const Ray &r, const Normal &n, BSDF *bsdf, float pdf, float *pdfDirect) const
Static Public Member Functions
static Light *	CreateLight (const Transform &light2world, const ParamSet &paramSet, const TextureParams &tp)
Private Attributes
float	cosTotalWidth
float	cosFalloffStart
Point	lightPos
boost::shared_ptr< Texture < SWCSpectrum > >	Lbase
DifferentialGeometry	dummydg
float	gain

Detailed Description

Definition at line 32 of file spot.h.

Constructor & Destructor Documentation

SpotLight::SpotLight	(	const Transform &	light2world,
		const boost::shared_ptr< Texture< SWCSpectrum > >	L,
		float	gain,
		float	width,
		float	fall
	)

Definition at line 72 of file spot.cpp.

References cosFalloffStart, cosTotalWidth, gain, Lbase, lightPos, lux::Light::LightToWorld, and Radians().

Referenced by CreateLight().

SpotLight::~SpotLight ( ) [virtual]

Definition at line 85 of file spot.cpp.

Member Function Documentation

Light * SpotLight::CreateLight	(	const Transform &	light2world,
		const ParamSet &	paramSet,
		const TextureParams &	tp
	)			`[static]`

Definition at line 148 of file spot.cpp.

References lux::CoordinateSystem(), lux::ParamSet::FindOneFloat(), lux::ParamSet::FindOnePoint(), blender::g, lux::Transform::GetInverse(), lux::TextureParams::GetSWCSpectrumTexture(), lux::Normalize(), SpotLight(), lux::Translate(), lux::Point::x, lux::Vector::x, lux::Point::y, lux::Vector::y, lux::Point::z, and lux::Vector::z.

float SpotLight::Falloff ( const Vector & w ) const

Definition at line 86 of file spot.cpp.

References cosFalloffStart, cosTotalWidth, LocalFalloff(), lux::Normalize(), and lux::Light::WorldToLight.

Referenced by Sample_L().

virtual bool lux::SpotLight::IsDeltaLight ( ) const [inline, virtual]

Implements lux::Light.

Definition at line 38 of file spot.h.

virtual bool lux::SpotLight::IsEnvironmental ( ) const [inline, virtual]

Implements lux::Light.

Definition at line 39 of file spot.h.

SWCSpectrum SpotLight::Le	(	const TsPack *	tspack,
		const Scene *	scene,
		const Ray &	r,
		const Normal &	n,
		BSDF **	bsdf,
		float *	pdf,
		float *	pdfDirect
	)			const `[virtual]`

Reimplemented from lux::Light.

Definition at line 143 of file spot.cpp.

float SpotLight::Pdf	(	const Point &	p,
		const Normal &	n,
		const Point &	po,
		const Normal &	ns
	)			const `[virtual]`

Implements lux::Light.

Definition at line 100 of file spot.cpp.

References lux::AbsDot(), lux::DistanceSquared(), and lux::Normalize().

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

Implements lux::Light.

Definition at line 97 of file spot.cpp.

virtual SWCSpectrum lux::SpotLight::Power	(	const TsPack *	tspack,
		const Scene *
	)			const `[inline, virtual]`

Implements lux::Light.

Definition at line 41 of file spot.h.

References cosFalloffStart, cosTotalWidth, dummydg, Lbase, and M_PI.

bool SpotLight::Sample_L	(	const TsPack *	tspack,
		const Scene *	scene,
		const Point &	p,
		const Normal &	n,
		float	u1,
		float	u2,
		float	u3,
		BSDF **	bsdf,
		float *	pdf,
		float *	pdfDirect,
		VisibilityTester *	visibility,
		SWCSpectrum *	Le
	)			const `[virtual]`

Reimplemented from lux::Light.

Definition at line 126 of file spot.cpp.

References BSDF_ALLOC, lux::CoordinateSystem(), cosFalloffStart, cosTotalWidth, dummydg, gain, Lbase, lux::Vector::LengthSquared(), lightPos, lux::Light::LightToWorld, lux::VisibilityTester::SetSegment(), and lux::TsPack::time.

bool SpotLight::Sample_L	(	const TsPack *	tspack,
		const Scene *	scene,
		float	u1,
		float	u2,
		float	u3,
		BSDF **	bsdf,
		float *	pdf,
		SWCSpectrum *	Le
	)			const `[virtual]`

Reimplemented from lux::Light.

Definition at line 114 of file spot.cpp.

References BSDF_ALLOC, lux::CoordinateSystem(), cosFalloffStart, cosTotalWidth, dummydg, gain, Lbase, lightPos, and lux::Light::LightToWorld.

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

Implements lux::Light.

Definition at line 105 of file spot.cpp.

References cosTotalWidth, lux::Ray::d, dummydg, Falloff(), gain, Lbase, lightPos, lux::Light::LightToWorld, lux::Ray::o, lux::UniformConePdf(), and lux::UniformSampleCone().

SWCSpectrum SpotLight::Sample_L	(	const TsPack *	tspack,
		const Point &	P,
		float	u1,
		float	u2,
		float	u3,
		Vector *	wo,
		float *	pdf,
		VisibilityTester *	visibility
	)			const `[virtual]`