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/*
pbrt source code Copyright(c) 1998-2012 Matt Pharr and Greg Humphreys.
This file is part of pbrt.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// core/spectrum.cpp*
#include "stdafx.h"
#include "spectrum.h"
// Spectrum Method Definitions
bool SpectrumSamplesSorted(const float *lambda, const float *vals, int n) {
for (int i = 0; i < n-1; ++i)
if (lambda[i] > lambda[i+1]) return false;
return true;
}
void SortSpectrumSamples(float *lambda, float *vals, int n) {
std::vector<std::pair<float, float> > sortVec;
sortVec.reserve(n);
for (int i = 0; i < n; ++i)
sortVec.push_back(std::make_pair(lambda[i], vals[i]));
std::sort(sortVec.begin(), sortVec.end());
for (int i = 0; i < n; ++i) {
lambda[i] = sortVec[i].first;
vals[i] = sortVec[i].second;
}
}
float AverageSpectrumSamples(const float *lambda, const float *vals,
int n, float lambdaStart, float lambdaEnd) {
for (int i = 0; i < n-1; ++i) Assert(lambda[i+1] > lambda[i]);
Assert(lambdaStart < lambdaEnd);
// Handle cases with out-of-bounds range or single sample only
if (lambdaEnd <= lambda[0]) return vals[0];
if (lambdaStart >= lambda[n-1]) return vals[n-1];
if (n == 1) return vals[0];
float sum = 0.f;
// Add contributions of constant segments before/after samples
if (lambdaStart < lambda[0])
sum += vals[0] * (lambda[0] - lambdaStart);
if (lambdaEnd > lambda[n-1])
sum += vals[n-1] * (lambdaEnd - lambda[n-1]);
// Advance to first relevant wavelength segment
int i = 0;
while (lambdaStart > lambda[i+1]) ++i;
Assert(i+1 < n);
// Loop over wavelength sample segments and add contributions
#define INTERP(w, i) \
Lerp(((w) - lambda[i]) / (lambda[(i)+1] - lambda[i]), \
vals[i], vals[(i)+1])
#define SEG_AVG(wl0, wl1, i) (0.5f * (INTERP(wl0, i) + INTERP(wl1, i)))
for (; i+1 < n && lambdaEnd >= lambda[i]; ++i) {
float segStart = max(lambdaStart, lambda[i]);
float segEnd = min(lambdaEnd, lambda[i+1]);
sum += SEG_AVG(segStart, segEnd, i) * (segEnd - segStart);
}
#undef INTERP
#undef SEG_AVG
return sum / (lambdaEnd - lambdaStart);
}
RGBSpectrum SampledSpectrum::ToRGBSpectrum() const {
float rgb[3];
ToRGB(rgb);
return RGBSpectrum::FromRGB(rgb);
}
SampledSpectrum SampledSpectrum::FromRGB(const float rgb[3],
SpectrumType type) {
SampledSpectrum r;
if (type == SPECTRUM_REFLECTANCE) {
// Convert reflectance spectrum to RGB
if (rgb[0] <= rgb[1] && rgb[0] <= rgb[2]) {
// Compute reflectance _SampledSpectrum_ with _rgb[0]_ as minimum
r += rgb[0] * rgbRefl2SpectWhite;
if (rgb[1] <= rgb[2]) {
r += (rgb[1] - rgb[0]) * rgbRefl2SpectCyan;
r += (rgb[2] - rgb[1]) * rgbRefl2SpectBlue;
}
else {
r += (rgb[2] - rgb[0]) * rgbRefl2SpectCyan;
r += (rgb[1] - rgb[2]) * rgbRefl2SpectGreen;
}
}
else if (rgb[1] <= rgb[0] && rgb[1] <= rgb[2]) {
// Compute reflectance _SampledSpectrum_ with _rgb[1]_ as minimum
r += rgb[1] * rgbRefl2SpectWhite;
if (rgb[0] <= rgb[2]) {
r += (rgb[0] - rgb[1]) * rgbRefl2SpectMagenta;
r += (rgb[2] - rgb[0]) * rgbRefl2SpectBlue;
}
else {
r += (rgb[2] - rgb[1]) * rgbRefl2SpectMagenta;
r += (rgb[0] - rgb[2]) * rgbRefl2SpectRed;
}
}
else {
// Compute reflectance _SampledSpectrum_ with _rgb[2]_ as minimum
r += rgb[2] * rgbRefl2SpectWhite;
if (rgb[0] <= rgb[1]) {
r += (rgb[0] - rgb[2]) * rgbRefl2SpectYellow;
r += (rgb[1] - rgb[0]) * rgbRefl2SpectGreen;
}
else {
r += (rgb[1] - rgb[2]) * rgbRefl2SpectYellow;
r += (rgb[0] - rgb[1]) * rgbRefl2SpectRed;
}
}
r *= .94;
}
else {
// Convert illuminant spectrum to RGB
if (rgb[0] <= rgb[1] && rgb[0] <= rgb[2]) {
// Compute illuminant _SampledSpectrum_ with _rgb[0]_ as minimum
r += rgb[0] * rgbIllum2SpectWhite;
if (rgb[1] <= rgb[2]) {
r += (rgb[1] - rgb[0]) * rgbIllum2SpectCyan;
r += (rgb[2] - rgb[1]) * rgbIllum2SpectBlue;
}
else {
r += (rgb[2] - rgb[0]) * rgbIllum2SpectCyan;
r += (rgb[1] - rgb[2]) * rgbIllum2SpectGreen;
}
}
else if (rgb[1] <= rgb[0] && rgb[1] <= rgb[2]) {
// Compute illuminant _SampledSpectrum_ with _rgb[1]_ as minimum
r += rgb[1] * rgbIllum2SpectWhite;
if (rgb[0] <= rgb[2]) {
r += (rgb[0] - rgb[1]) * rgbIllum2SpectMagenta;
r += (rgb[2] - rgb[0]) * rgbIllum2SpectBlue;
}
else {
r += (rgb[2] - rgb[1]) * rgbIllum2SpectMagenta;
r += (rgb[0] - rgb[2]) * rgbIllum2SpectRed;
}
}
else {
// Compute illuminant _SampledSpectrum_ with _rgb[2]_ as minimum
r += rgb[2] * rgbIllum2SpectWhite;
if (rgb[0] <= rgb[1]) {
r += (rgb[0] - rgb[2]) * rgbIllum2SpectYellow;
r += (rgb[1] - rgb[0]) * rgbIllum2SpectGreen;
}
else {
r += (rgb[1] - rgb[2]) * rgbIllum2SpectYellow;
r += (rgb[0] - rgb[1]) * rgbIllum2SpectRed;
}
}
r *= .86445f;
}
return r.Clamp();
}
SampledSpectrum::SampledSpectrum(const RGBSpectrum &r, SpectrumType t) {
float rgb[3];
r.ToRGB(rgb);
*this = SampledSpectrum::FromRGB(rgb, t);
}
void Blackbody(const float *wl, int n, float temp, float *vals) {
if (temp <= 0) {
for (int i = 0; i < n; ++i) vals[i] = 0.f;
return;
}
const double C2 = 1.4388e7;
double norm = pow(555.0, 5.0) * (exp(C2/(555.0*temp)) - 1.);
for (int i = 0; i < n; ++i)
vals[i] = float(norm/(pow(double(wl[i]), 5.0)*(exp(C2/(wl[i]*temp))-1.)));
}
float InterpolateSpectrumSamples(const float *lambda, const float *vals,
int n, float l) {
for (int i = 0; i < n-1; ++i) Assert(lambda[i+1] > lambda[i]);
if (l <= lambda[0]) return vals[0];
if (l >= lambda[n-1]) return vals[n-1];
for (int i = 0; i < n-1; ++i) {
if (l >= lambda[i] && l <= lambda[i+1]) {
float t = (l - lambda[i]) / (lambda[i+1] - lambda[i]);
return Lerp(t, vals[i], vals[i+1]);
}
}
Severe("Fatal logic error in InterpolateSpectrumSamples()");
return 0.f;
}
const float CIE_X[nCIESamples] = {
// CIE X function values
0.0001299000f, 0.0001458470f, 0.0001638021f, 0.0001840037f,
0.0002066902f, 0.0002321000f, 0.0002607280f, 0.0002930750f,
0.0003293880f, 0.0003699140f, 0.0004149000f, 0.0004641587f,
0.0005189860f, 0.0005818540f, 0.0006552347f, 0.0007416000f,
0.0008450296f, 0.0009645268f, 0.001094949f, 0.001231154f,
0.001368000f, 0.001502050f, 0.001642328f, 0.001802382f,
0.001995757f, 0.002236000f, 0.002535385f, 0.002892603f,
0.003300829f, 0.003753236f, 0.004243000f, 0.004762389f,
0.005330048f, 0.005978712f, 0.006741117f, 0.007650000f,
0.008751373f, 0.01002888f, 0.01142170f, 0.01286901f,
0.01431000f, 0.01570443f, 0.01714744f, 0.01878122f,
0.02074801f, 0.02319000f, 0.02620736f, 0.02978248f,
0.03388092f, 0.03846824f, 0.04351000f, 0.04899560f,
0.05502260f, 0.06171880f, 0.06921200f, 0.07763000f,
0.08695811f, 0.09717672f, 0.1084063f, 0.1207672f,
0.1343800f, 0.1493582f, 0.1653957f, 0.1819831f,
0.1986110f, 0.2147700f, 0.2301868f, 0.2448797f,
0.2587773f, 0.2718079f, 0.2839000f, 0.2949438f,
0.3048965f, 0.3137873f, 0.3216454f, 0.3285000f,
0.3343513f, 0.3392101f, 0.3431213f, 0.3461296f,
0.3482800f, 0.3495999f, 0.3501474f, 0.3500130f,
0.3492870f, 0.3480600f, 0.3463733f, 0.3442624f,
0.3418088f, 0.3390941f, 0.3362000f, 0.3331977f,
0.3300411f, 0.3266357f, 0.3228868f, 0.3187000f,
0.3140251f, 0.3088840f, 0.3032904f, 0.2972579f,
0.2908000f, 0.2839701f, 0.2767214f, 0.2689178f,
0.2604227f, 0.2511000f, 0.2408475f, 0.2298512f,
0.2184072f, 0.2068115f, 0.1953600f, 0.1842136f,
0.1733273f, 0.1626881f, 0.1522833f, 0.1421000f,
0.1321786f, 0.1225696f, 0.1132752f, 0.1042979f,
0.09564000f, 0.08729955f, 0.07930804f, 0.07171776f,
0.06458099f, 0.05795001f, 0.05186211f, 0.04628152f,
0.04115088f, 0.03641283f, 0.03201000f, 0.02791720f,
0.02414440f, 0.02068700f, 0.01754040f, 0.01470000f,
0.01216179f, 0.009919960f, 0.007967240f, 0.006296346f,
0.004900000f, 0.003777173f, 0.002945320f, 0.002424880f,
0.002236293f, 0.002400000f, 0.002925520f, 0.003836560f,
0.005174840f, 0.006982080f, 0.009300000f, 0.01214949f,
0.01553588f, 0.01947752f, 0.02399277f, 0.02910000f,
0.03481485f, 0.04112016f, 0.04798504f, 0.05537861f,
0.06327000f, 0.07163501f, 0.08046224f, 0.08973996f,
0.09945645f, 0.1096000f, 0.1201674f, 0.1311145f,
0.1423679f, 0.1538542f, 0.1655000f, 0.1772571f,
0.1891400f, 0.2011694f, 0.2133658f, 0.2257499f,
0.2383209f, 0.2510668f, 0.2639922f, 0.2771017f,
0.2904000f, 0.3038912f, 0.3175726f, 0.3314384f,
0.3454828f, 0.3597000f, 0.3740839f, 0.3886396f,
0.4033784f, 0.4183115f, 0.4334499f, 0.4487953f,
0.4643360f, 0.4800640f, 0.4959713f, 0.5120501f,
0.5282959f, 0.5446916f, 0.5612094f, 0.5778215f,
0.5945000f, 0.6112209f, 0.6279758f, 0.6447602f,
0.6615697f, 0.6784000f, 0.6952392f, 0.7120586f,
0.7288284f, 0.7455188f, 0.7621000f, 0.7785432f,
0.7948256f, 0.8109264f, 0.8268248f, 0.8425000f,
0.8579325f, 0.8730816f, 0.8878944f, 0.9023181f,
0.9163000f, 0.9297995f, 0.9427984f, 0.9552776f,
0.9672179f, 0.9786000f, 0.9893856f, 0.9995488f,
1.0090892f, 1.0180064f, 1.0263000f, 1.0339827f,
1.0409860f, 1.0471880f, 1.0524667f, 1.0567000f,
1.0597944f, 1.0617992f, 1.0628068f, 1.0629096f,
1.0622000f, 1.0607352f, 1.0584436f, 1.0552244f,
1.0509768f, 1.0456000f, 1.0390369f, 1.0313608f,
1.0226662f, 1.0130477f, 1.0026000f, 0.9913675f,
0.9793314f, 0.9664916f, 0.9528479f, 0.9384000f,
0.9231940f, 0.9072440f, 0.8905020f, 0.8729200f,
0.8544499f, 0.8350840f, 0.8149460f, 0.7941860f,
0.7729540f, 0.7514000f, 0.7295836f, 0.7075888f,
0.6856022f, 0.6638104f, 0.6424000f, 0.6215149f,
0.6011138f, 0.5811052f, 0.5613977f, 0.5419000f,
0.5225995f, 0.5035464f, 0.4847436f, 0.4661939f,
0.4479000f, 0.4298613f, 0.4120980f, 0.3946440f,
0.3775333f, 0.3608000f, 0.3444563f, 0.3285168f,
0.3130192f, 0.2980011f, 0.2835000f, 0.2695448f,
0.2561184f, 0.2431896f, 0.2307272f, 0.2187000f,
0.2070971f, 0.1959232f, 0.1851708f, 0.1748323f,
0.1649000f, 0.1553667f, 0.1462300f, 0.1374900f,
0.1291467f, 0.1212000f, 0.1136397f, 0.1064650f,
0.09969044f, 0.09333061f, 0.08740000f, 0.08190096f,
0.07680428f, 0.07207712f, 0.06768664f, 0.06360000f,
0.05980685f, 0.05628216f, 0.05297104f, 0.04981861f,
0.04677000f, 0.04378405f, 0.04087536f, 0.03807264f,
0.03540461f, 0.03290000f, 0.03056419f, 0.02838056f,
0.02634484f, 0.02445275f, 0.02270000f, 0.02108429f,
0.01959988f, 0.01823732f, 0.01698717f, 0.01584000f,
0.01479064f, 0.01383132f, 0.01294868f, 0.01212920f,
0.01135916f, 0.01062935f, 0.009938846f, 0.009288422f,
0.008678854f, 0.008110916f, 0.007582388f, 0.007088746f,
0.006627313f, 0.006195408f, 0.005790346f, 0.005409826f,
0.005052583f, 0.004717512f, 0.004403507f, 0.004109457f,
0.003833913f, 0.003575748f, 0.003334342f, 0.003109075f,
0.002899327f, 0.002704348f, 0.002523020f, 0.002354168f,
0.002196616f, 0.002049190f, 0.001910960f, 0.001781438f,
0.001660110f, 0.001546459f, 0.001439971f, 0.001340042f,
0.001246275f, 0.001158471f, 0.001076430f, 0.0009999493f,
0.0009287358f, 0.0008624332f, 0.0008007503f, 0.0007433960f,
0.0006900786f, 0.0006405156f, 0.0005945021f, 0.0005518646f,
0.0005124290f, 0.0004760213f, 0.0004424536f, 0.0004115117f,
0.0003829814f, 0.0003566491f, 0.0003323011f, 0.0003097586f,
0.0002888871f, 0.0002695394f, 0.0002515682f, 0.0002348261f,
0.0002191710f, 0.0002045258f, 0.0001908405f, 0.0001780654f,
0.0001661505f, 0.0001550236f, 0.0001446219f, 0.0001349098f,
0.0001258520f, 0.0001174130f, 0.0001095515f, 0.0001022245f,
0.00009539445f, 0.00008902390f, 0.00008307527f, 0.00007751269f,
0.00007231304f, 0.00006745778f, 0.00006292844f, 0.00005870652f,
0.00005477028f, 0.00005109918f, 0.00004767654f, 0.00004448567f,
0.00004150994f, 0.00003873324f, 0.00003614203f, 0.00003372352f,
0.00003146487f, 0.00002935326f, 0.00002737573f, 0.00002552433f,
0.00002379376f, 0.00002217870f, 0.00002067383f, 0.00001927226f,
0.00001796640f, 0.00001674991f, 0.00001561648f, 0.00001455977f,
0.00001357387f, 0.00001265436f, 0.00001179723f, 0.00001099844f,
0.00001025398f, 0.000009559646f, 0.000008912044f, 0.000008308358f,
0.000007745769f, 0.000007221456f, 0.000006732475f, 0.000006276423f,
0.000005851304f, 0.000005455118f, 0.000005085868f, 0.000004741466f,
0.000004420236f, 0.000004120783f, 0.000003841716f, 0.000003581652f,
0.000003339127f, 0.000003112949f, 0.000002902121f, 0.000002705645f,
0.000002522525f, 0.000002351726f, 0.000002192415f, 0.000002043902f,
0.000001905497f, 0.000001776509f, 0.000001656215f, 0.000001544022f,
0.000001439440f, 0.000001341977f, 0.000001251141f
};
const float CIE_Y[nCIESamples] = {
// CIE Y function values
0.000003917000f, 0.000004393581f, 0.000004929604f, 0.000005532136f,
0.000006208245f, 0.000006965000f, 0.000007813219f, 0.000008767336f,
0.000009839844f, 0.00001104323f, 0.00001239000f, 0.00001388641f,
0.00001555728f, 0.00001744296f, 0.00001958375f, 0.00002202000f,
0.00002483965f, 0.00002804126f, 0.00003153104f, 0.00003521521f,
0.00003900000f, 0.00004282640f, 0.00004691460f, 0.00005158960f,
0.00005717640f, 0.00006400000f, 0.00007234421f, 0.00008221224f,
0.00009350816f, 0.0001061361f, 0.0001200000f, 0.0001349840f,
0.0001514920f, 0.0001702080f, 0.0001918160f, 0.0002170000f,
0.0002469067f, 0.0002812400f, 0.0003185200f, 0.0003572667f,
0.0003960000f, 0.0004337147f, 0.0004730240f, 0.0005178760f,
0.0005722187f, 0.0006400000f, 0.0007245600f, 0.0008255000f,
0.0009411600f, 0.001069880f, 0.001210000f, 0.001362091f,
0.001530752f, 0.001720368f, 0.001935323f, 0.002180000f,
0.002454800f, 0.002764000f, 0.003117800f, 0.003526400f,
0.004000000f, 0.004546240f, 0.005159320f, 0.005829280f,
0.006546160f, 0.007300000f, 0.008086507f, 0.008908720f,
0.009767680f, 0.01066443f, 0.01160000f, 0.01257317f,
0.01358272f, 0.01462968f, 0.01571509f, 0.01684000f,
0.01800736f, 0.01921448f, 0.02045392f, 0.02171824f,
0.02300000f, 0.02429461f, 0.02561024f, 0.02695857f,
0.02835125f, 0.02980000f, 0.03131083f, 0.03288368f,
0.03452112f, 0.03622571f, 0.03800000f, 0.03984667f,
0.04176800f, 0.04376600f, 0.04584267f, 0.04800000f,
0.05024368f, 0.05257304f, 0.05498056f, 0.05745872f,
0.06000000f, 0.06260197f, 0.06527752f, 0.06804208f,
0.07091109f, 0.07390000f, 0.07701600f, 0.08026640f,
0.08366680f, 0.08723280f, 0.09098000f, 0.09491755f,
0.09904584f, 0.1033674f, 0.1078846f, 0.1126000f,
0.1175320f, 0.1226744f, 0.1279928f, 0.1334528f,
0.1390200f, 0.1446764f, 0.1504693f, 0.1564619f,
0.1627177f, 0.1693000f, 0.1762431f, 0.1835581f,
0.1912735f, 0.1994180f, 0.2080200f, 0.2171199f,
0.2267345f, 0.2368571f, 0.2474812f, 0.2586000f,
0.2701849f, 0.2822939f, 0.2950505f, 0.3085780f,
0.3230000f, 0.3384021f, 0.3546858f, 0.3716986f,
0.3892875f, 0.4073000f, 0.4256299f, 0.4443096f,
0.4633944f, 0.4829395f, 0.5030000f, 0.5235693f,
0.5445120f, 0.5656900f, 0.5869653f, 0.6082000f,
0.6293456f, 0.6503068f, 0.6708752f, 0.6908424f,
0.7100000f, 0.7281852f, 0.7454636f, 0.7619694f,
0.7778368f, 0.7932000f, 0.8081104f, 0.8224962f,
0.8363068f, 0.8494916f, 0.8620000f, 0.8738108f,
0.8849624f, 0.8954936f, 0.9054432f, 0.9148501f,
0.9237348f, 0.9320924f, 0.9399226f, 0.9472252f,
0.9540000f, 0.9602561f, 0.9660074f, 0.9712606f,
0.9760225f, 0.9803000f, 0.9840924f, 0.9874812f,
0.9903128f, 0.9928116f, 0.9949501f, 0.9967108f,
0.9980983f, 0.9991120f, 0.9997482f, 1.0000000f,
0.9998567f, 0.9993046f, 0.9983255f, 0.9968987f,
0.9950000f, 0.9926005f, 0.9897426f, 0.9864444f,
0.9827241f, 0.9786000f, 0.9740837f, 0.9691712f,
0.9638568f, 0.9581349f, 0.9520000f, 0.9454504f,
0.9384992f, 0.9311628f, 0.9234576f, 0.9154000f,
0.9070064f, 0.8982772f, 0.8892048f, 0.8797816f,
0.8700000f, 0.8598613f, 0.8493920f, 0.8386220f,
0.8275813f, 0.8163000f, 0.8047947f, 0.7930820f,
0.7811920f, 0.7691547f, 0.7570000f, 0.7447541f,
0.7324224f, 0.7200036f, 0.7074965f, 0.6949000f,
0.6822192f, 0.6694716f, 0.6566744f, 0.6438448f,
0.6310000f, 0.6181555f, 0.6053144f, 0.5924756f,
0.5796379f, 0.5668000f, 0.5539611f, 0.5411372f,
0.5283528f, 0.5156323f, 0.5030000f, 0.4904688f,
0.4780304f, 0.4656776f, 0.4534032f, 0.4412000f,
0.4290800f, 0.4170360f, 0.4050320f, 0.3930320f,
0.3810000f, 0.3689184f, 0.3568272f, 0.3447768f,
0.3328176f, 0.3210000f, 0.3093381f, 0.2978504f,
0.2865936f, 0.2756245f, 0.2650000f, 0.2547632f,
0.2448896f, 0.2353344f, 0.2260528f, 0.2170000f,
0.2081616f, 0.1995488f, 0.1911552f, 0.1829744f,
0.1750000f, 0.1672235f, 0.1596464f, 0.1522776f,
0.1451259f, 0.1382000f, 0.1315003f, 0.1250248f,
0.1187792f, 0.1127691f, 0.1070000f, 0.1014762f,
0.09618864f, 0.09112296f, 0.08626485f, 0.08160000f,
0.07712064f, 0.07282552f, 0.06871008f, 0.06476976f,
0.06100000f, 0.05739621f, 0.05395504f, 0.05067376f,
0.04754965f, 0.04458000f, 0.04175872f, 0.03908496f,
0.03656384f, 0.03420048f, 0.03200000f, 0.02996261f,
0.02807664f, 0.02632936f, 0.02470805f, 0.02320000f,
0.02180077f, 0.02050112f, 0.01928108f, 0.01812069f,
0.01700000f, 0.01590379f, 0.01483718f, 0.01381068f,
0.01283478f, 0.01192000f, 0.01106831f, 0.01027339f,
0.009533311f, 0.008846157f, 0.008210000f, 0.007623781f,
0.007085424f, 0.006591476f, 0.006138485f, 0.005723000f,
0.005343059f, 0.004995796f, 0.004676404f, 0.004380075f,
0.004102000f, 0.003838453f, 0.003589099f, 0.003354219f,
0.003134093f, 0.002929000f, 0.002738139f, 0.002559876f,
0.002393244f, 0.002237275f, 0.002091000f, 0.001953587f,
0.001824580f, 0.001703580f, 0.001590187f, 0.001484000f,
0.001384496f, 0.001291268f, 0.001204092f, 0.001122744f,
0.001047000f, 0.0009765896f, 0.0009111088f, 0.0008501332f,
0.0007932384f, 0.0007400000f, 0.0006900827f, 0.0006433100f,
0.0005994960f, 0.0005584547f, 0.0005200000f, 0.0004839136f,
0.0004500528f, 0.0004183452f, 0.0003887184f, 0.0003611000f,
0.0003353835f, 0.0003114404f, 0.0002891656f, 0.0002684539f,
0.0002492000f, 0.0002313019f, 0.0002146856f, 0.0001992884f,
0.0001850475f, 0.0001719000f, 0.0001597781f, 0.0001486044f,
0.0001383016f, 0.0001287925f, 0.0001200000f, 0.0001118595f,
0.0001043224f, 0.00009733560f, 0.00009084587f, 0.00008480000f,
0.00007914667f, 0.00007385800f, 0.00006891600f, 0.00006430267f,
0.00006000000f, 0.00005598187f, 0.00005222560f, 0.00004871840f,
0.00004544747f, 0.00004240000f, 0.00003956104f, 0.00003691512f,
0.00003444868f, 0.00003214816f, 0.00003000000f, 0.00002799125f,
0.00002611356f, 0.00002436024f, 0.00002272461f, 0.00002120000f,
0.00001977855f, 0.00001845285f, 0.00001721687f, 0.00001606459f,
0.00001499000f, 0.00001398728f, 0.00001305155f, 0.00001217818f,
0.00001136254f, 0.00001060000f, 0.000009885877f, 0.000009217304f,
0.000008592362f, 0.000008009133f, 0.000007465700f, 0.000006959567f,
0.000006487995f, 0.000006048699f, 0.000005639396f, 0.000005257800f,
0.000004901771f, 0.000004569720f, 0.000004260194f, 0.000003971739f,
0.000003702900f, 0.000003452163f, 0.000003218302f, 0.000003000300f,
0.000002797139f, 0.000002607800f, 0.000002431220f, 0.000002266531f,
0.000002113013f, 0.000001969943f, 0.000001836600f, 0.000001712230f,
0.000001596228f, 0.000001488090f, 0.000001387314f, 0.000001293400f,
0.000001205820f, 0.000001124143f, 0.000001048009f, 0.0000009770578f,
0.0000009109300f, 0.0000008492513f, 0.0000007917212f, 0.0000007380904f,
0.0000006881098f, 0.0000006415300f, 0.0000005980895f, 0.0000005575746f,
0.0000005198080f, 0.0000004846123f, 0.0000004518100f
};
const float CIE_Z[nCIESamples] = {
// CIE Z function values
0.0006061000f, 0.0006808792f, 0.0007651456f, 0.0008600124f,
0.0009665928f, 0.001086000f, 0.001220586f, 0.001372729f,
0.001543579f, 0.001734286f, 0.001946000f, 0.002177777f,
0.002435809f, 0.002731953f, 0.003078064f, 0.003486000f,
0.003975227f, 0.004540880f, 0.005158320f, 0.005802907f,
0.006450001f, 0.007083216f, 0.007745488f, 0.008501152f,
0.009414544f, 0.01054999f, 0.01196580f, 0.01365587f,
0.01558805f, 0.01773015f, 0.02005001f, 0.02251136f,
0.02520288f, 0.02827972f, 0.03189704f, 0.03621000f,
0.04143771f, 0.04750372f, 0.05411988f, 0.06099803f,
0.06785001f, 0.07448632f, 0.08136156f, 0.08915364f,
0.09854048f, 0.1102000f, 0.1246133f, 0.1417017f,
0.1613035f, 0.1832568f, 0.2074000f, 0.2336921f,
0.2626114f, 0.2947746f, 0.3307985f, 0.3713000f,
0.4162091f, 0.4654642f, 0.5196948f, 0.5795303f,
0.6456000f, 0.7184838f, 0.7967133f, 0.8778459f,
0.9594390f, 1.0390501f, 1.1153673f, 1.1884971f,
1.2581233f, 1.3239296f, 1.3856000f, 1.4426352f,
1.4948035f, 1.5421903f, 1.5848807f, 1.6229600f,
1.6564048f, 1.6852959f, 1.7098745f, 1.7303821f,
1.7470600f, 1.7600446f, 1.7696233f, 1.7762637f,
1.7804334f, 1.7826000f, 1.7829682f, 1.7816998f,
1.7791982f, 1.7758671f, 1.7721100f, 1.7682589f,
1.7640390f, 1.7589438f, 1.7524663f, 1.7441000f,
1.7335595f, 1.7208581f, 1.7059369f, 1.6887372f,
1.6692000f, 1.6475287f, 1.6234127f, 1.5960223f,
1.5645280f, 1.5281000f, 1.4861114f, 1.4395215f,
1.3898799f, 1.3387362f, 1.2876400f, 1.2374223f,
1.1878243f, 1.1387611f, 1.0901480f, 1.0419000f,
0.9941976f, 0.9473473f, 0.9014531f, 0.8566193f,
0.8129501f, 0.7705173f, 0.7294448f, 0.6899136f,
0.6521049f, 0.6162000f, 0.5823286f, 0.5504162f,
0.5203376f, 0.4919673f, 0.4651800f, 0.4399246f,
0.4161836f, 0.3938822f, 0.3729459f, 0.3533000f,
0.3348578f, 0.3175521f, 0.3013375f, 0.2861686f,
0.2720000f, 0.2588171f, 0.2464838f, 0.2347718f,
0.2234533f, 0.2123000f, 0.2011692f, 0.1901196f,
0.1792254f, 0.1685608f, 0.1582000f, 0.1481383f,
0.1383758f, 0.1289942f, 0.1200751f, 0.1117000f,
0.1039048f, 0.09666748f, 0.08998272f, 0.08384531f,
0.07824999f, 0.07320899f, 0.06867816f, 0.06456784f,
0.06078835f, 0.05725001f, 0.05390435f, 0.05074664f,
0.04775276f, 0.04489859f, 0.04216000f, 0.03950728f,
0.03693564f, 0.03445836f, 0.03208872f, 0.02984000f,
0.02771181f, 0.02569444f, 0.02378716f, 0.02198925f,
0.02030000f, 0.01871805f, 0.01724036f, 0.01586364f,
0.01458461f, 0.01340000f, 0.01230723f, 0.01130188f,
0.01037792f, 0.009529306f, 0.008749999f, 0.008035200f,
0.007381600f, 0.006785400f, 0.006242800f, 0.005749999f,
0.005303600f, 0.004899800f, 0.004534200f, 0.004202400f,
0.003900000f, 0.003623200f, 0.003370600f, 0.003141400f,
0.002934800f, 0.002749999f, 0.002585200f, 0.002438600f,
0.002309400f, 0.002196800f, 0.002100000f, 0.002017733f,
0.001948200f, 0.001889800f, 0.001840933f, 0.001800000f,
0.001766267f, 0.001737800f, 0.001711200f, 0.001683067f,
0.001650001f, 0.001610133f, 0.001564400f, 0.001513600f,
0.001458533f, 0.001400000f, 0.001336667f, 0.001270000f,
0.001205000f, 0.001146667f, 0.001100000f, 0.001068800f,
0.001049400f, 0.001035600f, 0.001021200f, 0.001000000f,
0.0009686400f, 0.0009299200f, 0.0008868800f, 0.0008425600f,
0.0008000000f, 0.0007609600f, 0.0007236800f, 0.0006859200f,
0.0006454400f, 0.0006000000f, 0.0005478667f, 0.0004916000f,
0.0004354000f, 0.0003834667f, 0.0003400000f, 0.0003072533f,
0.0002831600f, 0.0002654400f, 0.0002518133f, 0.0002400000f,
0.0002295467f, 0.0002206400f, 0.0002119600f, 0.0002021867f,
0.0001900000f, 0.0001742133f, 0.0001556400f, 0.0001359600f,
0.0001168533f, 0.0001000000f, 0.00008613333f, 0.00007460000f,
0.00006500000f, 0.00005693333f, 0.00004999999f, 0.00004416000f,
0.00003948000f, 0.00003572000f, 0.00003264000f, 0.00003000000f,
0.00002765333f, 0.00002556000f, 0.00002364000f, 0.00002181333f,
0.00002000000f, 0.00001813333f, 0.00001620000f, 0.00001420000f,
0.00001213333f, 0.00001000000f, 0.000007733333f, 0.000005400000f,
0.000003200000f, 0.000001333333f, 0.000000000000f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f
};
const float CIE_lambda[nCIESamples] = {
360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373,
374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387,
388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401,
402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415,
416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429,
430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443,
444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457,
458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471,
472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485,
486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499,
500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513,
514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527,
528, 529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 540, 541,
542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555,
556, 557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569,
570, 571, 572, 573, 574, 575, 576, 577, 578, 579, 580, 581, 582, 583,
584, 585, 586, 587, 588, 589, 590, 591, 592, 593, 594, 595, 596, 597,
598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611,
612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625,
626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639,
640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651, 652, 653,
654, 655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665, 666, 667,
668, 669, 670, 671, 672, 673, 674, 675, 676, 677, 678, 679, 680, 681,
682, 683, 684, 685, 686, 687, 688, 689, 690, 691, 692, 693, 694, 695,
696, 697, 698, 699, 700, 701, 702, 703, 704, 705, 706, 707, 708, 709,
710, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 722, 723,
724, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737,
738, 739, 740, 741, 742, 743, 744, 745, 746, 747, 748, 749, 750, 751,
752, 753, 754, 755, 756, 757, 758, 759, 760, 761, 762, 763, 764, 765,
766, 767, 768, 769, 770, 771, 772, 773, 774, 775, 776, 777, 778, 779,
780, 781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792, 793,
794, 795, 796, 797, 798, 799, 800, 801, 802, 803, 804, 805, 806, 807,
808, 809, 810, 811, 812, 813, 814, 815, 816, 817, 818, 819, 820, 821,
822, 823, 824, 825, 826, 827, 828, 829, 830 };
// Spectral Data Definitions
SampledSpectrum SampledSpectrum::X;
SampledSpectrum SampledSpectrum::Y;
SampledSpectrum SampledSpectrum::Z;
SampledSpectrum SampledSpectrum::rgbRefl2SpectWhite;
SampledSpectrum SampledSpectrum::rgbRefl2SpectCyan;
SampledSpectrum SampledSpectrum::rgbRefl2SpectMagenta;
SampledSpectrum SampledSpectrum::rgbRefl2SpectYellow;
SampledSpectrum SampledSpectrum::rgbRefl2SpectRed;
SampledSpectrum SampledSpectrum::rgbRefl2SpectGreen;
SampledSpectrum SampledSpectrum::rgbRefl2SpectBlue;
SampledSpectrum SampledSpectrum::rgbIllum2SpectWhite;
SampledSpectrum SampledSpectrum::rgbIllum2SpectCyan;
SampledSpectrum SampledSpectrum::rgbIllum2SpectMagenta;
SampledSpectrum SampledSpectrum::rgbIllum2SpectYellow;
SampledSpectrum SampledSpectrum::rgbIllum2SpectRed;
SampledSpectrum SampledSpectrum::rgbIllum2SpectGreen;
SampledSpectrum SampledSpectrum::rgbIllum2SpectBlue;
const float RGB2SpectLambda[nRGB2SpectSamples] = {
380.000000, 390.967743, 401.935486, 412.903229, 423.870972, 434.838715,
445.806458, 456.774200, 467.741943, 478.709686, 489.677429, 500.645172,
511.612915, 522.580627, 533.548340, 544.516052, 555.483765, 566.451477,
577.419189, 588.386902, 599.354614, 610.322327, 621.290039, 632.257751,
643.225464, 654.193176, 665.160889, 676.128601, 687.096313, 698.064026,
709.031738, 720.000000
};
const float RGBRefl2SpectWhite[nRGB2SpectSamples] = {
1.0618958571272863e+00, 1.0615019980348779e+00,
1.0614335379927147e+00, 1.0622711654692485e+00,
1.0622036218416742e+00, 1.0625059965187085e+00,
1.0623938486985884e+00, 1.0624706448043137e+00,
1.0625048144827762e+00, 1.0624366131308856e+00,
1.0620694238892607e+00, 1.0613167586932164e+00,
1.0610334029377020e+00, 1.0613868564828413e+00,
1.0614215366116762e+00, 1.0620336151299086e+00,
1.0625497454805051e+00, 1.0624317487992085e+00,
1.0625249140554480e+00, 1.0624277664486914e+00,
1.0624749854090769e+00, 1.0625538581025402e+00,
1.0625326910104864e+00, 1.0623922312225325e+00,
1.0623650980354129e+00, 1.0625256476715284e+00,
1.0612277619533155e+00, 1.0594262608698046e+00,
1.0599810758292072e+00, 1.0602547314449409e+00,
1.0601263046243634e+00, 1.0606565756823634e+00 };
const float RGBRefl2SpectCyan[nRGB2SpectSamples] = {
1.0414628021426751e+00, 1.0328661533771188e+00,
1.0126146228964314e+00, 1.0350460524836209e+00,
1.0078661447098567e+00, 1.0422280385081280e+00,
1.0442596738499825e+00, 1.0535238290294409e+00,
1.0180776226938120e+00, 1.0442729908727713e+00,
1.0529362541920750e+00, 1.0537034271160244e+00,
1.0533901869215969e+00, 1.0537782700979574e+00,
1.0527093770467102e+00, 1.0530449040446797e+00,
1.0550554640191208e+00, 1.0553673610724821e+00,
1.0454306634683976e+00, 6.2348950639230805e-01,
1.8038071613188977e-01, -7.6303759201984539e-03,
-1.5217847035781367e-04, -7.5102257347258311e-03,
-2.1708639328491472e-03, 6.5919466602369636e-04,
1.2278815318539780e-02, -4.4669775637208031e-03,
1.7119799082865147e-02, 4.9211089759759801e-03,
5.8762925143334985e-03, 2.5259399415550079e-02 };
const float RGBRefl2SpectMagenta[nRGB2SpectSamples] = {
9.9422138151236850e-01, 9.8986937122975682e-01,
9.8293658286116958e-01, 9.9627868399859310e-01,
1.0198955019000133e+00, 1.0166395501210359e+00,
1.0220913178757398e+00, 9.9651666040682441e-01,
1.0097766178917882e+00, 1.0215422470827016e+00,
6.4031953387790963e-01, 2.5012379477078184e-03,
6.5339939555769944e-03, 2.8334080462675826e-03,
-5.1209675389074505e-11, -9.0592291646646381e-03,
3.3936718323331200e-03, -3.0638741121828406e-03,
2.2203936168286292e-01, 6.3141140024811970e-01,
9.7480985576500956e-01, 9.7209562333590571e-01,
1.0173770302868150e+00, 9.9875194322734129e-01,
9.4701725739602238e-01, 8.5258623154354796e-01,
9.4897798581660842e-01, 9.4751876096521492e-01,
9.9598944191059791e-01, 8.6301351503809076e-01,
8.9150987853523145e-01, 8.4866492652845082e-01 };
const float RGBRefl2SpectYellow[nRGB2SpectSamples] = {
5.5740622924920873e-03, -4.7982831631446787e-03,
-5.2536564298613798e-03, -6.4571480044499710e-03,
-5.9693514658007013e-03, -2.1836716037686721e-03,
1.6781120601055327e-02, 9.6096355429062641e-02,
2.1217357081986446e-01, 3.6169133290685068e-01,
5.3961011543232529e-01, 7.4408810492171507e-01,
9.2209571148394054e-01, 1.0460304298411225e+00,
1.0513824989063714e+00, 1.0511991822135085e+00,
1.0510530911991052e+00, 1.0517397230360510e+00,
1.0516043086790485e+00, 1.0511944032061460e+00,
1.0511590325868068e+00, 1.0516612465483031e+00,
1.0514038526836869e+00, 1.0515941029228475e+00,
1.0511460436960840e+00, 1.0515123758830476e+00,
1.0508871369510702e+00, 1.0508923708102380e+00,
1.0477492815668303e+00, 1.0493272144017338e+00,
1.0435963333422726e+00, 1.0392280772051465e+00 };
const float RGBRefl2SpectRed[nRGB2SpectSamples] = {
1.6575604867086180e-01, 1.1846442802747797e-01,
1.2408293329637447e-01, 1.1371272058349924e-01,
7.8992434518899132e-02, 3.2205603593106549e-02,
-1.0798365407877875e-02, 1.8051975516730392e-02,
5.3407196598730527e-03, 1.3654918729501336e-02,
-5.9564213545642841e-03, -1.8444365067353252e-03,
-1.0571884361529504e-02, -2.9375521078000011e-03,
-1.0790476271835936e-02, -8.0224306697503633e-03,
-2.2669167702495940e-03, 7.0200240494706634e-03,
-8.1528469000299308e-03, 6.0772866969252792e-01,
9.8831560865432400e-01, 9.9391691044078823e-01,
1.0039338994753197e+00, 9.9234499861167125e-01,
9.9926530858855522e-01, 1.0084621557617270e+00,
9.8358296827441216e-01, 1.0085023660099048e+00,
9.7451138326568698e-01, 9.8543269570059944e-01,
9.3495763980962043e-01, 9.8713907792319400e-01 };
const float RGBRefl2SpectGreen[nRGB2SpectSamples] = {
2.6494153587602255e-03, -5.0175013429732242e-03,
-1.2547236272489583e-02, -9.4554964308388671e-03,
-1.2526086181600525e-02, -7.9170697760437767e-03,
-7.9955735204175690e-03, -9.3559433444469070e-03,
6.5468611982999303e-02, 3.9572875517634137e-01,
7.5244022299886659e-01, 9.6376478690218559e-01,
9.9854433855162328e-01, 9.9992977025287921e-01,
9.9939086751140449e-01, 9.9994372267071396e-01,
9.9939121813418674e-01, 9.9911237310424483e-01,
9.6019584878271580e-01, 6.3186279338432438e-01,
2.5797401028763473e-01, 9.4014888527335638e-03,
-3.0798345608649747e-03, -4.5230367033685034e-03,
-6.8933410388274038e-03, -9.0352195539015398e-03,
-8.5913667165340209e-03, -8.3690869120289398e-03,
-7.8685832338754313e-03, -8.3657578711085132e-06,
5.4301225442817177e-03, -2.7745589759259194e-03 };
const float RGBRefl2SpectBlue[nRGB2SpectSamples] = {
9.9209771469720676e-01, 9.8876426059369127e-01,
9.9539040744505636e-01, 9.9529317353008218e-01,
9.9181447411633950e-01, 1.0002584039673432e+00,
9.9968478437342512e-01, 9.9988120766657174e-01,
9.8504012146370434e-01, 7.9029849053031276e-01,
5.6082198617463974e-01, 3.3133458513996528e-01,
1.3692410840839175e-01, 1.8914906559664151e-02,
-5.1129770932550889e-06, -4.2395493167891873e-04,
-4.1934593101534273e-04, 1.7473028136486615e-03,
3.7999160177631316e-03, -5.5101474906588642e-04,
-4.3716662898480967e-05, 7.5874501748732798e-03,
2.5795650780554021e-02, 3.8168376532500548e-02,
4.9489586408030833e-02, 4.9595992290102905e-02,
4.9814819505812249e-02, 3.9840911064978023e-02,
3.0501024937233868e-02, 2.1243054765241080e-02,
6.9596532104356399e-03, 4.1733649330980525e-03 };
const float RGBIllum2SpectWhite[nRGB2SpectSamples] = {
1.1565232050369776e+00, 1.1567225000119139e+00,
1.1566203150243823e+00, 1.1555782088080084e+00,
1.1562175509215700e+00, 1.1567674012207332e+00,
1.1568023194808630e+00, 1.1567677445485520e+00,
1.1563563182952830e+00, 1.1567054702510189e+00,
1.1565134139372772e+00, 1.1564336176499312e+00,
1.1568023181530034e+00, 1.1473147688514642e+00,
1.1339317140561065e+00, 1.1293876490671435e+00,
1.1290515328639648e+00, 1.0504864823782283e+00,
1.0459696042230884e+00, 9.9366687168595691e-01,
9.5601669265393940e-01, 9.2467482033511805e-01,
9.1499944702051761e-01, 8.9939467658453465e-01,
8.9542520751331112e-01, 8.8870566693814745e-01,
8.8222843814228114e-01, 8.7998311373826676e-01,
8.7635244612244578e-01, 8.8000368331709111e-01,
8.8065665428441120e-01, 8.8304706460276905e-01 };
const float RGBIllum2SpectCyan[nRGB2SpectSamples] = {
1.1334479663682135e+00, 1.1266762330194116e+00,
1.1346827504710164e+00, 1.1357395805744794e+00,
1.1356371830149636e+00, 1.1361152989346193e+00,
1.1362179057706772e+00, 1.1364819652587022e+00,
1.1355107110714324e+00, 1.1364060941199556e+00,
1.1360363621722465e+00, 1.1360122641141395e+00,
1.1354266882467030e+00, 1.1363099407179136e+00,
1.1355450412632506e+00, 1.1353732327376378e+00,
1.1349496420726002e+00, 1.1111113947168556e+00,
9.0598740429727143e-01, 6.1160780787465330e-01,
2.9539752170999634e-01, 9.5954200671150097e-02,
-1.1650792030826267e-02, -1.2144633073395025e-02,
-1.1148167569748318e-02, -1.1997606668458151e-02,
-5.0506855475394852e-03, -7.9982745819542154e-03,
-9.4722817708236418e-03, -5.5329541006658815e-03,
-4.5428914028274488e-03, -1.2541015360921132e-02 };
const float RGBIllum2SpectMagenta[nRGB2SpectSamples] = {
1.0371892935878366e+00, 1.0587542891035364e+00,
1.0767271213688903e+00, 1.0762706844110288e+00,
1.0795289105258212e+00, 1.0743644742950074e+00,
1.0727028691194342e+00, 1.0732447452056488e+00,
1.0823760816041414e+00, 1.0840545681409282e+00,
9.5607567526306658e-01, 5.5197896855064665e-01,
8.4191094887247575e-02, 8.7940070557041006e-05,
-2.3086408335071251e-03, -1.1248136628651192e-03,
-7.7297612754989586e-11, -2.7270769006770834e-04,
1.4466473094035592e-02, 2.5883116027169478e-01,
5.2907999827566732e-01, 9.0966624097105164e-01,
1.0690571327307956e+00, 1.0887326064796272e+00,
1.0637622289511852e+00, 1.0201812918094260e+00,
1.0262196688979945e+00, 1.0783085560613190e+00,
9.8333849623218872e-01, 1.0707246342802621e+00,
1.0634247770423768e+00, 1.0150875475729566e+00 };
const float RGBIllum2SpectYellow[nRGB2SpectSamples] = {
2.7756958965811972e-03, 3.9673820990646612e-03,
-1.4606936788606750e-04, 3.6198394557748065e-04,
-2.5819258699309733e-04, -5.0133191628082274e-05,
-2.4437242866157116e-04, -7.8061419948038946e-05,
4.9690301207540921e-02, 4.8515973574763166e-01,
1.0295725854360589e+00, 1.0333210878457741e+00,
1.0368102644026933e+00, 1.0364884018886333e+00,
1.0365427939411784e+00, 1.0368595402854539e+00,
1.0365645405660555e+00, 1.0363938240707142e+00,
1.0367205578770746e+00, 1.0365239329446050e+00,
1.0361531226427443e+00, 1.0348785007827348e+00,
1.0042729660717318e+00, 8.4218486432354278e-01,
7.3759394894801567e-01, 6.5853154500294642e-01,
6.0531682444066282e-01, 5.9549794132420741e-01,
5.9419261278443136e-01, 5.6517682326634266e-01,
5.6061186014968556e-01, 5.8228610381018719e-01 };
const float RGBIllum2SpectRed[nRGB2SpectSamples] = {
5.4711187157291841e-02, 5.5609066498303397e-02,
6.0755873790918236e-02, 5.6232948615962369e-02,
4.6169940535708678e-02, 3.8012808167818095e-02,
2.4424225756670338e-02, 3.8983580581592181e-03,
-5.6082252172734437e-04, 9.6493871255194652e-04,
3.7341198051510371e-04, -4.3367389093135200e-04,
-9.3533962256892034e-05, -1.2354967412842033e-04,
-1.4524548081687461e-04, -2.0047691915543731e-04,
-4.9938587694693670e-04, 2.7255083540032476e-02,
1.6067405906297061e-01, 3.5069788873150953e-01,
5.7357465538418961e-01, 7.6392091890718949e-01,
8.9144466740381523e-01, 9.6394609909574891e-01,
9.8879464276016282e-01, 9.9897449966227203e-01,
9.8605140403564162e-01, 9.9532502805345202e-01,
9.7433478377305371e-01, 9.9134364616871407e-01,
9.8866287772174755e-01, 9.9713856089735531e-01 };
const float RGBIllum2SpectGreen[nRGB2SpectSamples] = {
2.5168388755514630e-02, 3.9427438169423720e-02,
6.2059571596425793e-03, 7.1120859807429554e-03,
2.1760044649139429e-04, 7.3271839984290210e-12,
-2.1623066217181700e-02, 1.5670209409407512e-02,
2.8019603188636222e-03, 3.2494773799897647e-01,
1.0164917292316602e+00, 1.0329476657890369e+00,
1.0321586962991549e+00, 1.0358667411948619e+00,
1.0151235476834941e+00, 1.0338076690093119e+00,
1.0371372378155013e+00, 1.0361377027692558e+00,
1.0229822432557210e+00, 9.6910327335652324e-01,
-5.1785923899878572e-03, 1.1131261971061429e-03,
6.6675503033011771e-03, 7.4024315686001957e-04,
2.1591567633473925e-02, 5.1481620056217231e-03,
1.4561928645728216e-03, 1.6414511045291513e-04,
-6.4630764968453287e-03, 1.0250854718507939e-02,
4.2387394733956134e-02, 2.1252716926861620e-02 };
const float RGBIllum2SpectBlue[nRGB2SpectSamples] = {
1.0570490759328752e+00, 1.0538466912851301e+00,
1.0550494258140670e+00, 1.0530407754701832e+00,
1.0579930596460185e+00, 1.0578439494812371e+00,
1.0583132387180239e+00, 1.0579712943137616e+00,
1.0561884233578465e+00, 1.0571399285426490e+00,
1.0425795187752152e+00, 3.2603084374056102e-01,
-1.9255628442412243e-03, -1.2959221137046478e-03,
-1.4357356276938696e-03, -1.2963697250337886e-03,
-1.9227081162373899e-03, 1.2621152526221778e-03,
-1.6095249003578276e-03, -1.3029983817879568e-03,
-1.7666600873954916e-03, -1.2325281140280050e-03,
1.0316809673254932e-02, 3.1284512648354357e-02,
8.8773879881746481e-02, 1.3873621740236541e-01,
1.5535067531939065e-01, 1.4878477178237029e-01,
1.6624255403475907e-01, 1.6997613960634927e-01,
1.5769743995852967e-01, 1.9069090525482305e-01 };