void PoldiSpectrumDomainFunction::poldiFunction1D(
const std::vector<int> &indices, const FunctionDomain1D &domain,
FunctionValues &values) const {
FunctionValues localValues(domain);
m_profileFunction->functionLocal(localValues.getPointerToCalculated(0),
domain.getPointerAt(0), domain.size());
double chopperSlitCount = static_cast<double>(m_chopperSlitOffsets.size());
for (auto index : indices) {
std::vector<double> factors(domain.size());
for (size_t i = 0; i < factors.size(); ++i) {
values.addToCalculated(i, chopperSlitCount * localValues[i] *
m_timeTransformer->detectorElementIntensity(
domain[i], static_cast<size_t>(index)));
}
}
}
void PoldiSpectrumLinearBackground::poldiFunction1D(
const std::vector<int> &indices, const FunctionDomain1D &domain,
FunctionValues &values) const {
double backgroundDetector = getParameter(0);
double wireCount = static_cast<double>(indices.size());
double distributionFactor = wireCount * wireCount *
static_cast<double>(m_timeBinCount) /
(2.0 * static_cast<double>(domain.size()));
double backgroundD = backgroundDetector * distributionFactor;
for (size_t i = 0; i < values.size(); ++i) {
values.addToCalculated(i, backgroundD);
}
}
/// Takes a d-based domain and creates a Q-based MatrixWorkspace.
MatrixWorkspace_sptr
PoldiFitPeaks2D::getQSpectrum(const FunctionDomain1D &domain,
const FunctionValues &values) const {
// Put result into workspace, based on Q
MatrixWorkspace_sptr ws1D = WorkspaceFactory::Instance().create(
"Workspace2D", 1, domain.size(), values.size());
auto &xData = ws1D->mutableX(0);
auto &yData = ws1D->mutableY(0);
size_t offset = values.size() - 1;
for (size_t i = 0; i < values.size(); ++i) {
xData[offset - i] = Conversions::dToQ(domain[i]);
yData[offset - i] = values[i];
}
ws1D->getAxis(0)->setUnit("MomentumTransfer");
return ws1D;
}
