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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Resample/Slice/SliceStack.cpp
//! @brief Implements class SliceStack.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "Resample/Slice/SliceStack.h"
#include "Base/Util/Assert.h"
#include <algorithm>
void SliceStack::addTopSlice(double zbottom, const Material& material)
{
this->emplace_back(Slice(ZLimits(zbottom, ZLimits::inf), material, {}, nullptr, 0.0));
}
void SliceStack::addSlice(double thickness, const Material& material,
const Roughness* const roughness, double rms)
{
ASSERT(!this->empty());
double top = this->back().low();
ASSERT(thickness >= 0);
std::unique_ptr<ZLimits> zRange;
if (thickness == 0)
zRange = std::make_unique<ZLimits>(-ZLimits::inf, top);
else
zRange = std::make_unique<ZLimits>(top - thickness, top);
this->emplace_back(Slice(*zRange, material, {}, roughness, rms));
}
//! Adds n times the same slice to the stack.
void SliceStack::addNSlices(size_t n, double thickness, const Material& material,
const Roughness* const roughness, double rms)
{
ASSERT(thickness > 0);
ASSERT(n > 0);
const double slice_thickness = thickness / n;
addSlice(slice_thickness, material, roughness, rms);
for (size_t i = 1; i < n; ++i)
addSlice(slice_thickness, material);
}
SliceStack SliceStack::setBField(const R3& externalField)
{
// Temporary forbid non-zero magnetization in fronting medium (see issue #654)
if (this->at(0).material().magnetization() != R3())
throw std::runtime_error("Processing fronting magnetization is not implemented yet.");
// Temporary forbid non-zero external field (see issue #654)
if (externalField != R3())
throw std::runtime_error("Processing external field is not implemented yet.");
if (this->empty())
return *this;
const double M_z0 = this->at(0).material().magnetization().z();
const double H_z = externalField.z() + M_z0;
for (Slice& slice : *this)
slice.initBField(externalField, H_z);
return *this;
}
const Roughness* SliceStack::bottomRoughness(size_t i_slice) const
{
if (i_slice + 1 < size())
return (*this)[i_slice + 1].topRoughness();
return nullptr;
}
double SliceStack::bottomRMS(size_t i_slice) const
{
if (i_slice + 1 < size())
return (*this)[i_slice + 1].topRMS();
return 0.0;
}
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