spectrum.h File Reference

#include "pbrt.h"
#include "parallel.h"

Go to the source code of this file.

Classes
class	CoefficientSpectrum< nSamples >
class	SampledSpectrum
class	RGBSpectrum
Enumerations
enum	SpectrumType { SPECTRUM_REFLECTANCE, SPECTRUM_ILLUMINANT }
Functions
bool	SpectrumSamplesSorted (const float *lambda, const float *vals, int n)
void	SortSpectrumSamples (float *lambda, float *vals, int n)
float	AverageSpectrumSamples (const float *lambda, const float *vals, int n, float lambdaStart, float lambdaEnd)
void	XYZToRGB (const float xyz[3], float rgb[3])
void	RGBToXYZ (const float rgb[3], float xyz[3])
void	Blackbody (const float *wl, int n, float temp, float *vals)
float	InterpolateSpectrumSamples (const float *lambda, const float *vals, int n, float l)
template<int nSamples>
CoefficientSpectrum< nSamples >	Pow (const CoefficientSpectrum< nSamples > &s, float e)
Spectrum	Lerp (float t, const Spectrum &s1, const Spectrum &s2)
Variables
static const int	sampledLambdaStart = 400
static const int	sampledLambdaEnd = 700
static const int	nSpectralSamples = 30
static const int	nCIESamples = 471
const float	CIE_X [nCIESamples]
const float	CIE_Y [nCIESamples]
const float	CIE_Z [nCIESamples]
const float	CIE_lambda [nCIESamples]
static const int	nRGB2SpectSamples = 32
const float	RGB2SpectLambda [nRGB2SpectSamples]
const float	RGBRefl2SpectWhite [nRGB2SpectSamples]
const float	RGBRefl2SpectCyan [nRGB2SpectSamples]
const float	RGBRefl2SpectMagenta [nRGB2SpectSamples]
const float	RGBRefl2SpectYellow [nRGB2SpectSamples]
const float	RGBRefl2SpectRed [nRGB2SpectSamples]
const float	RGBRefl2SpectGreen [nRGB2SpectSamples]
const float	RGBRefl2SpectBlue [nRGB2SpectSamples]
const float	RGBIllum2SpectWhite [nRGB2SpectSamples]
const float	RGBIllum2SpectCyan [nRGB2SpectSamples]
const float	RGBIllum2SpectMagenta [nRGB2SpectSamples]
const float	RGBIllum2SpectYellow [nRGB2SpectSamples]
const float	RGBIllum2SpectRed [nRGB2SpectSamples]
const float	RGBIllum2SpectGreen [nRGB2SpectSamples]
const float	RGBIllum2SpectBlue [nRGB2SpectSamples]

---

Enumeration Type Documentation

enum SpectrumType

Enumerator:

SPECTRUM_REFLECTANCE
SPECTRUM_ILLUMINANT

Definition at line 57 of file spectrum.h.

---

Function Documentation

float AverageSpectrumSamples	(	const float *	lambda,
		const float *	vals,
		int	n,
		float	lambdaStart,
		float	lambdaEnd
	)

Definition at line 50 of file spectrum.cpp.

References Assert, and SEG_AVG.

Referenced by SampledSpectrum::FromSampled(), and SampledSpectrum::Init().

void Blackbody	(	const float *	wl,
		int	n,
		float	temp,
		float *	vals
	)

Definition at line 187 of file spectrum.cpp.

Referenced by ParamSet::AddBlackbodySpectrum().

float InterpolateSpectrumSamples	(	const float *	lambda,
		const float *	vals,
		int	n,
		float	l
	)

Definition at line 199 of file spectrum.cpp.

References Assert, Lerp(), and Severe().

Referenced by RGBSpectrum::FromSampled().

Spectrum Lerp	(	float	t,
		const Spectrum &	s1,
		const Spectrum &	s2
	)			[inline]

Definition at line 457 of file spectrum.h.

template<int nSamples>

CoefficientSpectrum<nSamples> Pow	(	const CoefficientSpectrum< nSamples > &	s,
		float	e
	)			[inline]

Definition at line 448 of file spectrum.h.

References Assert, CoefficientSpectrum< nSamples >::c, and CoefficientSpectrum< nSamples >::HasNaNs().

Referenced by ImageTexture< Tmemory, Treturn >::convertIn().

void RGBToXYZ	(	const float	rgb[3],
		float	xyz[3]
	)			[inline]

Definition at line 50 of file spectrum.h.

Referenced by RGBSpectrum::ToXYZ().

void SortSpectrumSamples	(	float *	lambda,
		float *	vals,
		int	n
	)

Definition at line 37 of file spectrum.cpp.

Referenced by RGBSpectrum::FromSampled(), and SampledSpectrum::FromSampled().

bool SpectrumSamplesSorted	(	const float *	lambda,
		const float *	vals,
		int	n
	)

Definition at line 30 of file spectrum.cpp.

Referenced by RGBSpectrum::FromSampled(), and SampledSpectrum::FromSampled().

void XYZToRGB	(	const float	xyz[3],
		float	rgb[3]
	)			[inline]

Definition at line 43 of file spectrum.h.

Referenced by RGBSpectrum::FromXYZ(), SampledSpectrum::FromXYZ(), SampledSpectrum::ToRGB(), ImageFilm::UpdateDisplay(), and ImageFilm::WriteImage().

---

Variable Documentation

const float CIE_lambda[nCIESamples]

Definition at line 584 of file spectrum.cpp.

Referenced by ParamSet::AddBlackbodySpectrum(), RGBSpectrum::FromSampled(), and SampledSpectrum::Init().

const float CIE_X[nCIESamples]

Definition at line 215 of file spectrum.cpp.

Referenced by RGBSpectrum::FromSampled(), and SampledSpectrum::Init().

const float CIE_Y[nCIESamples]

Definition at line 338 of file spectrum.cpp.

Referenced by RGBSpectrum::FromSampled(), and SampledSpectrum::Init().

const float CIE_Z[nCIESamples]

Definition at line 461 of file spectrum.cpp.

Referenced by RGBSpectrum::FromSampled(), and SampledSpectrum::Init().

const int nCIESamples = 471 [static]

Definition at line 63 of file spectrum.h.

Referenced by ParamSet::AddBlackbodySpectrum(), RGBSpectrum::FromSampled(), and SampledSpectrum::Init().

const int nRGB2SpectSamples = 32 [static]

Definition at line 68 of file spectrum.h.

Referenced by SampledSpectrum::Init().

const int nSpectralSamples = 30 [static]

Definition at line 38 of file spectrum.h.

Referenced by SampledSpectrum::FromSampled(), SampledSpectrum::Init(), SampledSpectrum::SampledSpectrum(), SampledSpectrum::ToXYZ(), and SampledSpectrum::y().

const float RGB2SpectLambda[nRGB2SpectSamples]

Definition at line 639 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectBlue[nRGB2SpectSamples]

Definition at line 883 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectCyan[nRGB2SpectSamples]

Definition at line 793 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectGreen[nRGB2SpectSamples]

Definition at line 865 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectMagenta[nRGB2SpectSamples]

Definition at line 811 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectRed[nRGB2SpectSamples]

Definition at line 847 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectWhite[nRGB2SpectSamples]

Definition at line 775 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBIllum2SpectYellow[nRGB2SpectSamples]

Definition at line 829 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectBlue[nRGB2SpectSamples]

Definition at line 758 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectCyan[nRGB2SpectSamples]

Definition at line 668 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectGreen[nRGB2SpectSamples]

Definition at line 740 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectMagenta[nRGB2SpectSamples]

Definition at line 686 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectRed[nRGB2SpectSamples]

Definition at line 722 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectWhite[nRGB2SpectSamples]

Definition at line 650 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const float RGBRefl2SpectYellow[nRGB2SpectSamples]

Definition at line 704 of file spectrum.cpp.

Referenced by SampledSpectrum::Init().

const int sampledLambdaEnd = 700 [static]

Definition at line 37 of file spectrum.h.

Referenced by SampledSpectrum::FromSampled(), and SampledSpectrum::Init().

const int sampledLambdaStart = 400 [static]

Definition at line 36 of file spectrum.h.

Referenced by SampledSpectrum::FromSampled(), and SampledSpectrum::Init().