montecarlo.cpp File Reference

#include "stdafx.h"
#include "montecarlo.h"
#include "geometry.h"
#include "shape.h"
#include "volume.h"

Go to the source code of this file.

Functions
void	StratifiedSample1D (float *samp, int nSamples, RNG &rng, bool jitter)
void	StratifiedSample2D (float *samp, int nx, int ny, RNG &rng, bool jitter)
void	LatinHypercube (float *samples, uint32_t nSamples, uint32_t nDim, RNG &rng)
int	LDPixelSampleFloatsNeeded (const Sample *sample, int nPixelSamples)
void	LDPixelSample (int xPos, int yPos, float shutterOpen, float shutterClose, int nPixelSamples, Sample *samples, float *buf, RNG &rng)
void	RejectionSampleDisk (float *x, float *y, RNG &rng)
Vector	UniformSampleHemisphere (float u1, float u2)
float	UniformHemispherePdf ()
Vector	UniformSampleSphere (float u1, float u2)
float	UniformSpherePdf ()
void	UniformSampleDisk (float u1, float u2, float *x, float *y)
void	ConcentricSampleDisk (float u1, float u2, float *dx, float *dy)
void	UniformSampleTriangle (float u1, float u2, float *u, float *v)
float	UniformConePdf (float cosThetaMax)
Vector	UniformSampleCone (float u1, float u2, float costhetamax)
Vector	UniformSampleCone (float u1, float u2, float costhetamax, const Vector &x, const Vector &y, const Vector &z)
Vector	SampleHG (const Vector &w, float g, float u1, float u2)
float	HGPdf (const Vector &w, const Vector &wp, float g)
Variables
static const int	primes []

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Function Documentation

void ConcentricSampleDisk	(	float	u1,
		float	u2,
		float *	dx,
		float *	dy
	)

Definition at line 298 of file montecarlo.cpp.

References M_PI.

Referenced by CosineSampleHemisphere(), PerspectiveCamera::GenerateRay(), OrthoCamera::GenerateRay(), PerspectiveCamera::GenerateRayDifferential(), OrthoCamera::GenerateRayDifferential(), Disk::Sample(), InfiniteAreaLight::Sample_L(), and DistantLight::Sample_L().

float HGPdf	(	const Vector &	w,
		const Vector &	wp,
		float	g
	)

Definition at line 432 of file montecarlo.cpp.

References PhaseHG().

void LatinHypercube	(	float *	samples,
		uint32_t	nSamples,
		uint32_t	nDim,
		RNG &	rng
	)

Definition at line 163 of file montecarlo.cpp.

References OneMinusEpsilon, RNG::RandomFloat(), and RNG::RandomUInt().

Referenced by StratifiedSampler::GetMoreSamples(), and HaltonSampler::GetMoreSamples().

void LDPixelSample	(	int	xPos,
		int	yPos,
		float	shutterOpen,
		float	shutterClose,
		int	nPixelSamples,
		Sample *	samples,
		float *	buf,
		RNG &	rng
	)

Definition at line 192 of file montecarlo.cpp.

References ALLOCA, CameraSample::imageX, CameraSample::imageY, LDShuffleScrambled1D(), LDShuffleScrambled2D(), CameraSample::lensU, CameraSample::lensV, Lerp(), Sample::n1D, Sample::n2D, and CameraSample::time.

Referenced by LDSampler::GetMoreSamples(), and AdaptiveSampler::GetMoreSamples().

int LDPixelSampleFloatsNeeded	(	const Sample *	sample,
		int	nPixelSamples
	)

Definition at line 182 of file montecarlo.cpp.

References Sample::n1D, and Sample::n2D.

Referenced by LDSampler::GetMoreSamples(), and AdaptiveSampler::GetMoreSamples().

void RejectionSampleDisk	(	float *	x,
		float *	y,
		RNG &	rng
	)

Definition at line 249 of file montecarlo.cpp.

References RNG::RandomFloat().

Vector SampleHG	(	const Vector &	w,
		float	g,
		float	u1,
		float	u2
	)

Definition at line 415 of file montecarlo.cpp.

References CoordinateSystem(), M_PI, and SphericalDirection().

void StratifiedSample1D	(	float *	samp,
		int	nSamples,
		RNG &	rng,
		bool	jitter
	)

Definition at line 140 of file montecarlo.cpp.

References OneMinusEpsilon, and RNG::RandomFloat().

Referenced by StratifiedSampler::GetMoreSamples().

void StratifiedSample2D	(	float *	samp,
		int	nx,
		int	ny,
		RNG &	rng,
		bool	jitter
	)

Definition at line 150 of file montecarlo.cpp.

References OneMinusEpsilon, and RNG::RandomFloat().

Referenced by StratifiedSampler::GetMoreSamples(), and BSDF::rho().

float UniformConePdf

(

float

cosThetaMax

)

Definition at line 392 of file montecarlo.cpp.

References M_PI.

Referenced by PhotonIntegrator::Li(), Sphere::Pdf(), SpotLight::Sample_L(), and ProjectionLight::Sample_L().

float UniformHemispherePdf

(

)

Definition at line 270 of file montecarlo.cpp.

References INV_TWOPI.

Referenced by Gen_UniformHemisphere().

Vector UniformSampleCone	(	float	u1,
		float	u2,
		float	costhetamax,
		const Vector &	x,
		const Vector &	y,
		const Vector &	z
	)

Definition at line 405 of file montecarlo.cpp.

References Lerp(), and M_PI.

Vector UniformSampleCone	(	float	u1,
		float	u2,
		float	costhetamax
	)

Definition at line 397 of file montecarlo.cpp.

References M_PI.

Referenced by PhotonIntegrator::Li(), Sphere::Sample(), SpotLight::Sample_L(), and ProjectionLight::Sample_L().

void UniformSampleDisk	(	float	u1,
		float	u2,
		float *	x,
		float *	y
	)

Definition at line 290 of file montecarlo.cpp.

References M_PI.

Vector UniformSampleHemisphere	(	float	u1,
		float	u2
	)

Definition at line 260 of file montecarlo.cpp.

References M_PI.

Referenced by Gen_UniformHemisphere(), and BxDF::rho().

Vector UniformSampleSphere	(	float	u1,
		float	u2
	)

Definition at line 275 of file montecarlo.cpp.

References M_PI.

Referenced by AmbientOcclusionIntegrator::Li(), CreateRadianceProbes::Render(), AggregateTest::Render(), SurfacePointTask::Run(), Sphere::Sample(), PointLight::Sample_L(), GonioPhotometricLight::Sample_L(), DiffuseAreaLight::Sample_L(), SHComputeBSDFMatrix(), SHComputeDiffuseTransfer(), SHComputeTransferMatrix(), and SHProjectIncidentIndirectRadiance().

void UniformSampleTriangle	(	float	u1,
		float	u2,
		float *	u,
		float *	v
	)

Definition at line 343 of file montecarlo.cpp.

Referenced by Triangle::Sample().

float UniformSpherePdf

(

)

Definition at line 285 of file montecarlo.cpp.

References M_PI.

Referenced by PointLight::Sample_L(), GonioPhotometricLight::Sample_L(), SHComputeBSDFMatrix(), SHComputeDiffuseTransfer(), SHComputeTransferMatrix(), and SHProjectIncidentIndirectRadiance().

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Variable Documentation

const int primes[] [static]

Definition at line 33 of file montecarlo.cpp.

Referenced by PermutedHalton::PermutedHalton().