Container for all information related to a surface intersection. More...

#include <mitsuba/render/shape.h>

Public Member Functions
	Intersection ()

Vector	toWorld (const Vector &v) const
	Convert a local shading-space vector into world space. More...

Vector	toLocal (const Vector &v) const
	Convert a world-space vector into local shading coordinates. More...

bool	isValid () const
	Is the current intersection valid? More...

bool	isEmitter () const
	Is the intersected shape also a emitter? More...

bool	isSensor () const
	Is the intersected shape also a sensor? More...

bool	hasSubsurface () const
	Does the intersected shape have a subsurface integrator? More...

bool	isMediumTransition () const
	Does the surface mark a transition between two media? More...

const Medium *	getTargetMedium (const Vector &d) const
	Determine the target medium. More...

const Medium *	getTargetMedium (Float cosTheta) const
	Determine the target medium based on the cosine of the angle between the geometric normal and a direction. More...

const BSDF *	getBSDF (const RayDifferential &ray)
	Returns the BSDF of the intersected shape. More...

const BSDF *	getBSDF () const
	Returns the BSDF of the intersected shape. More...

Spectrum	Le (const Vector &d) const
	Returns radiance emitted into direction d. More...

Spectrum	LoSub (const Scene scene, Sampler sampler, const Vector &d, int depth=0) const
	Returns radiance from a subsurface integrator emitted into direction d. More...

void	computePartials (const RayDifferential &ray)
	Computes texture coordinate partials. More...

void	adjustTime (Float time)
	Move the intersection forward or backward through time. More...

void	getNormalDerivative (Vector &dndu, Vector &dndv, bool shadingFrame=true) const
	Calls the suitable implementation of Shape::getNormalDerivative() More...

std::string	toString () const
	Return a string representation. More...

Public Attributes
const Shape *	shape
	Pointer to the associated shape. More...

Float	t
	Distance traveled along the ray. More...

Point	p

Frame	geoFrame
	Geometry frame. More...

Frame	shFrame
	Shading frame. More...

Point2	uv
	UV surface coordinates. More...

Vector	dpdu
	Position partials wrt. the UV parameterization. More...

Vector	dpdv

Float	dudx
	UV partials wrt. changes in screen-space. More...

Float	dudy

Float	dvdx

Float	dvdy

Float	time
	Time value associated with the intersection. More...

Spectrum	color
	Interpolated vertex color. More...

Vector	wi
	Incident direction in the local shading frame. More...

bool	hasUVPartials: 1
	Have texture coordinate partials been computed. More...

uint32_t	primIndex: 31
	Primitive index, e.g. the triangle ID (if applicable) More...

const Shape *	instance
	Stores a pointer to the parent instance, if applicable. More...

Detailed Description

Container for all information related to a surface intersection.

Constructor & Destructor Documentation

mitsuba::Intersection::Intersection ( )

inline

Member Function Documentation

void Intersection::adjustTime ( Float time )

inline

Move the intersection forward or backward through time.

void mitsuba::Intersection::computePartials ( const RayDifferential & ray )

Computes texture coordinate partials.

const BSDF * Intersection::getBSDF ( const RayDifferential & ray )

inline

Returns the BSDF of the intersected shape.

The parameter ray must match the one used to create the intersection record. This function computes texture coordinate partials if this is required by the BSDF (e.g. for texture filtering).

Remarks: This function should only be called if there is a valid intersection!

const BSDF* mitsuba::Intersection::getBSDF ( ) const

inline

Returns the BSDF of the intersected shape.

void Intersection::getNormalDerivative	(	Vector &	dndu,
		Vector &	dndv,
		bool	shadingFrame = `true`
	)		const

inline

Calls the suitable implementation of Shape::getNormalDerivative()

const Medium* mitsuba::Intersection::getTargetMedium ( const Vector & d ) const

inline

Determine the target medium.

When isMediumTransition() = true, determine the medium that contains the ray (this->p, d)

const Medium* mitsuba::Intersection::getTargetMedium ( Float cosTheta ) const

inline

Determine the target medium based on the cosine of the angle between the geometric normal and a direction.

Returns the exterior medium when cosTheta > 0 and the interior medium when cosTheta <= 0.

bool Intersection::hasSubsurface ( ) const

inline

Does the intersected shape have a subsurface integrator?

bool Intersection::isEmitter ( ) const

inline

Is the intersected shape also a emitter?

bool Intersection::isMediumTransition ( ) const

inline

Does the surface mark a transition between two media?

bool Intersection::isSensor ( ) const

inline

Is the intersected shape also a sensor?

bool mitsuba::Intersection::isValid ( ) const

inline

Is the current intersection valid?

Spectrum Intersection::Le ( const Vector & d ) const

inline

Returns radiance emitted into direction d.

Remarks: This function should only be called if the intersected shape is actually an emitter.

Spectrum Intersection::LoSub	(	const Scene *	scene,
		Sampler *	sampler,
		const Vector &	d,
		int	depth = `0`
	)		const

inline

Returns radiance from a subsurface integrator emitted into direction d.

Remarks: Should only be called if the intersected shape is actually a subsurface integrator.

Vector mitsuba::Intersection::toLocal ( const Vector & v ) const

inline

Convert a world-space vector into local shading coordinates.

std::string mitsuba::Intersection::toString ( ) const

Return a string representation.

Vector mitsuba::Intersection::toWorld ( const Vector & v ) const

inline

Convert a local shading-space vector into world space.

Member Data Documentation

Spectrum mitsuba::Intersection::color

Interpolated vertex color.

Vector mitsuba::Intersection::dpdu

Position partials wrt. the UV parameterization.

Vector mitsuba::Intersection::dpdv

Float mitsuba::Intersection::dudx

UV partials wrt. changes in screen-space.

Float mitsuba::Intersection::dudy

Float mitsuba::Intersection::dvdx

Float mitsuba::Intersection::dvdy

Frame mitsuba::Intersection::geoFrame

Geometry frame.

bool mitsuba::Intersection::hasUVPartials

Have texture coordinate partials been computed.

const Shape* mitsuba::Intersection::instance

Stores a pointer to the parent instance, if applicable.

Point mitsuba::Intersection::p

uint32_t mitsuba::Intersection::primIndex

Primitive index, e.g. the triangle ID (if applicable)

const Shape* mitsuba::Intersection::shape

Pointer to the associated shape.

Frame mitsuba::Intersection::shFrame

Shading frame.

Float mitsuba::Intersection::t

Distance traveled along the ray.

Float mitsuba::Intersection::time

Time value associated with the intersection.

Point2 mitsuba::Intersection::uv

UV surface coordinates.

Vector mitsuba::Intersection::wi

Incident direction in the local shading frame.

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

include/mitsuba/render/shape.h
include/mitsuba/render/records.inl

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation