sampling.h File Reference

#include "pbrt.h"
#include "geometry.h"

Go to the source code of this file.

Classes
class	Sampler
struct	Sample
class	Filter
Functions
COREDLL void	StratifiedSample1D (float *samples, int nsamples, bool jitter=true)
COREDLL void	StratifiedSample2D (float *samples, int nx, int ny, bool jitter=true)
COREDLL void	Shuffle (float *samp, int count, int dims)
COREDLL void	LatinHypercube (float *samples, int nSamples, int nDim)
double	RadicalInverse (int n, int base)
double	FoldedRadicalInverse (int n, int base)
float	VanDerCorput (u_int n, u_int scramble=0)
float	Sobol2 (u_int n, u_int scramble=0)
float	LarcherPillichshammer2 (u_int n, u_int scramble=0)
void	Sample02 (u_int n, u_int scramble[2], float sample[2])
void	LDShuffleScrambled1D (int nSamples, int nPixel, float *samples)
void	LDShuffleScrambled2D (int nSamples, int nPixel, float *samples)

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Function Documentation

double FoldedRadicalInverse	(	int	n,
		int	base
	)			[inline]

Definition at line 95 of file sampling.h.

float LarcherPillichshammer2	(	u_int	n,
		u_int	scramble = 0
	)			[inline]

Definition at line 152 of file sampling.h.

COREDLL void LatinHypercube	(	float *	samples,
		int	nSamples,
		int	nDim
	)

Definition at line 98 of file sampling.cpp.

References RandomFloat(), and RandomUInt().

Referenced by StratifiedSampler::GetNextSample(), SingleScattering::Li(), and BxDF::rho().

void LDShuffleScrambled1D	(	int	nSamples,
		int	nPixel,
		float *	samples
	)			[inline]

Definition at line 157 of file sampling.h.

References RandomUInt(), Shuffle(), and VanDerCorput().

Referenced by LDSampler::GetNextSample(), BestCandidateSampler::GetNextSample(), and IGIIntegrator::Preprocess().

void LDShuffleScrambled2D	(	int	nSamples,
		int	nPixel,
		float *	samples
	)			[inline]

Definition at line 166 of file sampling.h.

References RandomUInt(), Sample02(), and Shuffle().

Referenced by LDSampler::GetNextSample(), BestCandidateSampler::GetNextSample(), and IGIIntegrator::Preprocess().

double RadicalInverse	(	int	n,
		int	base
	)			[inline]

Definition at line 83 of file sampling.h.

Referenced by PhotonIntegrator::Preprocess(), and ExPhotonIntegrator::Preprocess().

void Sample02	(	u_int	n,
		u_int	scramble[2],
		float	sample[2]
	)			[inline]

Definition at line 132 of file sampling.h.

References Sobol2(), and VanDerCorput().

Referenced by IrradianceCache::IndirectLo(), and LDShuffleScrambled2D().

COREDLL void Shuffle	(	float *	samp,
		int	count,
		int	dims
	)

Definition at line 91 of file sampling.cpp.

References RandomUInt().

Referenced by StratifiedSampler::GetNextSample(), LDShuffleScrambled1D(), LDShuffleScrambled2D(), and StratifiedSampler::StratifiedSampler().

float Sobol2	(	u_int	n,
		u_int	scramble = 0
	)			[inline]

Definition at line 146 of file sampling.h.

Referenced by Sample02().

COREDLL void StratifiedSample1D	(	float *	samples,
		int	nsamples,
		bool	jitter = true
	)

Definition at line 72 of file sampling.cpp.

References RandomFloat().

Referenced by StratifiedSampler::GetNextSample(), BestCandidateSampler::GetNextSample(), and StratifiedSampler::StratifiedSampler().

COREDLL void StratifiedSample2D	(	float *	samples,
		int	nx,
		int	ny,
		bool	jitter = true
	)

Definition at line 80 of file sampling.cpp.

References RandomFloat().

Referenced by Checkerboard3D< T >::Evaluate(), Checkerboard2D< T >::Evaluate(), StratifiedSampler::GetNextSample(), BestCandidateSampler::GetNextSample(), and StratifiedSampler::StratifiedSampler().

float VanDerCorput	(	u_int	n,
		u_int	scramble = 0
	)			[inline]

Definition at line 137 of file sampling.h.

Referenced by LDShuffleScrambled1D(), and Sample02().