void ParamSet::AddSampledSpectrumFiles(const string &name, const char **names,
int nItems) {
EraseSpectrum(name);
Spectrum *s = new Spectrum[nItems];
for (int i = 0; i < nItems; ++i) {
string fn = AbsolutePath(ResolveFilename(names[i]));
if (cachedSpectra.find(fn) != cachedSpectra.end()) {
s[i] = cachedSpectra[fn];
continue;
}
vector<float> vals;
if (!ReadFloatFile(fn.c_str(), &vals)) {
Warning("Unable to read SPD file \"%s\". Using black distribution.",
fn.c_str());
s[i] = Spectrum(0.);
}
else {
if (vals.size() % 2) {
Warning("Extra value found in spectrum file \"%s\". "
"Ignoring it.", fn.c_str());
}
vector<float> wls, v;
for (uint32_t j = 0; j < vals.size() / 2; ++j) {
wls.push_back(vals[2*j]);
v.push_back(vals[2*j+1]);
}
s[i] = Spectrum::FromSampled(&wls[0], &v[0], wls.size());
}
cachedSpectra[fn] = s[i];
}
spectra.push_back(new ParamSetItem<Spectrum>(name, s, nItems));
delete[] s;
}
void ParamSet::AddRGBSpectrum(const string &name, const float *data, int nItems) {
EraseSpectrum(name);
Assert(nItems % 3 == 0);
nItems /= 3;
Spectrum *s = new Spectrum[nItems];
for (int i = 0; i < nItems; ++i)
s[i] = Spectrum::FromRGB(&data[3*i]);
spectra.push_back(new ParamSetItem<Spectrum>(name, s, nItems));
delete[] s;
}
void ParamSet::AddXYZSpectrum(const std::string &name,
std::unique_ptr<Float[]> values, int nValues) {
EraseSpectrum(name);
Assert(nValues % 3 == 0);
nValues /= 3;
std::unique_ptr<Spectrum[]> s(new Spectrum[nValues]);
for (int i = 0; i < nValues; ++i) s[i] = Spectrum::FromXYZ(&values[3 * i]);
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, std::move(s), nValues));
spectra.push_back(psi);
}
void ParamSet::AddXYZSpectrum(const std::string &name, const Float *values,
int nValues) {
EraseSpectrum(name);
Assert(nValues % 3 == 0);
nValues /= 3;
Spectrum *s = new Spectrum[nValues];
for (int i = 0; i < nValues; ++i) s[i] = Spectrum::FromXYZ(&values[3 * i]);
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, s, nValues));
spectra.push_back(psi);
delete[] s;
}
void ParamSet::AddSampledSpectrum(const string &name, const float *data,
int nItems) {
EraseSpectrum(name);
Assert(nItems % 2 == 0);
nItems /= 2;
float *wl = new float[nItems], *v = new float[nItems];
for (int i = 0; i < nItems; ++i) {
wl[i] = data[2*i];
v[i] = data[2*i+1];
}
Spectrum s = Spectrum::FromSampled(wl, v, nItems);
spectra.push_back(new ParamSetItem<Spectrum>(name, &s, 1));
}
void ParamSet::AddBlackbodySpectrum(const string &name, const float *data,
int nItems) {
EraseSpectrum(name);
Assert(nItems % 2 == 0); // temperature (K), scale, ...
nItems /= 2;
Spectrum *s = new Spectrum[nItems];
float *v = new float[nCIESamples];
for (int i = 0; i < nItems; ++i) {
Blackbody(CIE_lambda, nCIESamples, data[2*i], v);
s[i] = data[2*i+1] * Spectrum::FromSampled(CIE_lambda, v, nCIESamples);
}
spectra.push_back(new ParamSetItem<Spectrum>(name, s, nItems));
delete[] s;
delete[] v;
}
void ParamSet::AddSampledSpectrum(const std::string &name, const Float *values,
int nValues) {
EraseSpectrum(name);
Assert(nValues % 2 == 0);
nValues /= 2;
Float *wl = new Float[nValues], *v = new Float[nValues];
for (int i = 0; i < nValues; ++i) {
wl[i] = values[2 * i];
v[i] = values[2 * i + 1];
}
Spectrum s = Spectrum::FromSampled(wl, v, nValues);
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, &s, 1));
spectra.push_back(psi);
}
void ParamSet::AddBlackbodySpectrum(const std::string &name,
const Float *values, int nValues) {
EraseSpectrum(name);
Assert(nValues % 2 == 0); // temperature (K), scale, ...
nValues /= 2;
std::unique_ptr<Spectrum[]> s(new Spectrum[nValues]);
std::unique_ptr<Float[]> v(new Float[nCIESamples]);
for (int i = 0; i < nValues; ++i) {
BlackbodyNormalized(CIE_lambda, nCIESamples, values[2 * i], v.get());
s[i] = values[2 * i + 1] *
Spectrum::FromSampled(CIE_lambda, v.get(), nCIESamples);
}
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, s.get(), nValues));
spectra.push_back(psi);
}
void ParamSet::AddSampledSpectrum(const std::string &name,
std::unique_ptr<Float[]> values,
int nValues) {
EraseSpectrum(name);
Assert(nValues % 2 == 0);
nValues /= 2;
std::unique_ptr<Float[]> wl(new Float[nValues]);
std::unique_ptr<Float[]> v(new Float[nValues]);
for (int i = 0; i < nValues; ++i) {
wl[i] = values[2 * i];
v[i] = values[2 * i + 1];
}
std::unique_ptr<Spectrum[]> s(new Spectrum[1]);
s[0] = Spectrum::FromSampled(wl.get(), v.get(), nValues);
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, std::move(s), 1));
spectra.push_back(psi);
}
void ParamSet::AddSampledSpectrumFiles(const std::string &name,
const char **names, int nValues) {
EraseSpectrum(name);
std::unique_ptr<Spectrum[]> s(new Spectrum[nValues]);
for (int i = 0; i < nValues; ++i) {
std::string fn = AbsolutePath(ResolveFilename(names[i]));
if (cachedSpectra.find(fn) != cachedSpectra.end()) {
s[i] = cachedSpectra[fn];
continue;
}
std::vector<Float> vals;
if (!ReadFloatFile(fn.c_str(), &vals)) {
Warning(
"Unable to read SPD file \"%s\". Using black distribution.",
fn.c_str());
s[i] = Spectrum(0.);
} else {
if (vals.size() % 2) {
Warning(
"Extra value found in spectrum file \"%s\". "
"Ignoring it.",
fn.c_str());
}
std::vector<Float> wls, v;
for (size_t j = 0; j < vals.size() / 2; ++j) {
wls.push_back(vals[2 * j]);
v.push_back(vals[2 * j + 1]);
}
s[i] = Spectrum::FromSampled(&wls[0], &v[0], wls.size());
}
cachedSpectra[fn] = s[i];
}
std::shared_ptr<ParamSetItem<Spectrum>> psi(
new ParamSetItem<Spectrum>(name, std::move(s), nValues));
spectra.push_back(psi);
}