mitsuba::HemisphereSampler Class Reference

Utility data structure for hemispherical sampling and translational/rotational gradient computation. More...

#include <mitsuba/render/irrcache.h>

Inheritance diagram for mitsuba::HemisphereSampler:

Classes
struct	SampleEntry

Public Member Functions
	HemisphereSampler (uint32_t M, uint32_t N)
uint32_t	getM () const
	Return the elevational resolution. More...
uint32_t	getN () const
	Return the azimuthal resolution. More...
SampleEntry &	operator() (uint32_t j, uint32_t k)
	Access a cell by index. More...
const SampleEntry &	operator() (uint32_t j, uint32_t k) const
	Access a cell by index (const version) More...
void	generateDirections (const Intersection &its)
	Generate a set of projected solid angle-distributed directions. More...
void	process (const Intersection &its)
	Compute mean distance, gradients etc. More...
const RotationalGradient &	getRotationalGradient () const
	Return the irradiance gradient with respect to rotation. More...
const RotationalGradient &	getTranslationalGradient () const
	Return the irradiance gradient with respect to translation. More...
Float	getHarmonicMeanDistance () const
	Return the average distance over all cells (harmonic mean) More...
Float	getMinimumDistance () const
	Return the minimum distance over all cells. More...
Float	getMinimumDistanceRestricted () const
	Return the minimum distance over all cells (>10 deg in elevation) More...
const Spectrum &	getIrradiance () const
	Return the computed irradiance. More...
virtual const Class *	getClass () const
	Retrieve this object's class. More...
Public Member Functions inherited from Object
	Object ()
	Construct a new object. More...
int	getRefCount () const
	Return the current reference count. More...
void	incRef () const
	Increase the reference count of the object by one. More...
void	decRef (bool autoDeallocate=true) const
	Decrease the reference count of the object and possibly deallocate it. More...
virtual std::string	toString () const
	Return a human-readable string representation of the object's contents. More...

Static Public Attributes
static Class *	m_theClass
Static Public Attributes inherited from Object
static Class *	m_theClass
	Pointer to the object's class descriptor. More...

Protected Member Functions
virtual	~HemisphereSampler ()
	Free all memory. More...
Protected Member Functions inherited from Object
virtual	~Object ()
	Virtual private deconstructor. (Will only be called by ref) More...

Additional Inherited Members
Static Public Member Functions inherited from Object
static void	staticInitialization ()
	Initializes the built-in reference count debugger (if enabled) More...
static void	staticShutdown ()
	Free the memory taken by staticInitialization() More...

Detailed Description

Utility data structure for hemispherical sampling and translational/rotational gradient computation.

Uses the improved translational gradients proposed in the paper "Improved radiance gradient computation" by Krivanek J., Gautron P., Bouatouch K., Pattanaik S. (Proceedings of SCCG 2005)

Author

Wenzel Jakob

Constructor & Destructor Documentation

mitsuba::HemisphereSampler::HemisphereSampler	(	uint32_t	M,
		uint32_t	N
	)

Allocate storage for a hemispherical sample with M elevation and N azimuthal samples.

virtual mitsuba::HemisphereSampler::~HemisphereSampler ( )

protectedvirtual

Free all memory.

Member Function Documentation

void mitsuba::HemisphereSampler::generateDirections

(

const Intersection &

its

)

Generate a set of projected solid angle-distributed directions.

virtual const Class* mitsuba::HemisphereSampler::getClass ( ) const

virtual

Retrieve this object's class.

Reimplemented from Object.

Float mitsuba::HemisphereSampler::getHarmonicMeanDistance ( ) const

inline

Return the average distance over all cells (harmonic mean)

const Spectrum& mitsuba::HemisphereSampler::getIrradiance ( ) const

inline

Return the computed irradiance.

uint32_t mitsuba::HemisphereSampler::getM ( ) const

inline

Return the elevational resolution.

Float mitsuba::HemisphereSampler::getMinimumDistance ( ) const

inline

Return the minimum distance over all cells.

Float mitsuba::HemisphereSampler::getMinimumDistanceRestricted ( ) const

inline

Return the minimum distance over all cells (>10 deg in elevation)

uint32_t mitsuba::HemisphereSampler::getN ( ) const

inline

Return the azimuthal resolution.

const RotationalGradient& mitsuba::HemisphereSampler::getRotationalGradient ( ) const

inline

Return the irradiance gradient with respect to rotation.

const RotationalGradient& mitsuba::HemisphereSampler::getTranslationalGradient ( ) const

inline

Return the irradiance gradient with respect to translation.

SampleEntry& mitsuba::HemisphereSampler::operator() ( uint32_t  j, uint32_t  k  )

inline

Access a cell by index.

const SampleEntry& mitsuba::HemisphereSampler::operator() ( uint32_t  j, uint32_t  k  ) const

inline

Access a cell by index (const version)

void mitsuba::HemisphereSampler::process

(

const Intersection &

its

)

Compute mean distance, gradients etc.

Member Data Documentation

Class* mitsuba::HemisphereSampler::m_theClass

static

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

• include/mitsuba/render/irrcache.h