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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Base/Axis/Bin.cpp
//! @brief Implements class Bin1D.
//!
//! @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 "Base/Axis/Bin.h"
#include "Base/Util/Assert.h"
#include <sstream>
#include <stdexcept>
Bin1D Bin1D::FromTo(double lower, double upper)
{
return {lower, upper};
}
Bin1D Bin1D::At(double center)
{
return {center, center};
}
Bin1D Bin1D::At(double center, double halfwidth)
{
return {center - halfwidth, center + halfwidth};
}
Bin1D::Bin1D(double lower, double upper)
: m_lower(lower)
, m_upper(upper)
{
if (lower > upper) {
std::stringstream s;
s << "Bin1D constructor called with lower=" << lower << ", upper=" << upper;
throw std::runtime_error(s.str());
}
}
double Bin1D::atFraction(double fraction) const
{
return m_lower * (1 - fraction) + m_upper * fraction;
}
std::optional<Bin1D> Bin1D::clipped_or_nil(double lower, double upper) const
{
ASSERT(lower <= upper);
if (upper < m_lower || m_upper < lower)
return {};
return Bin1D(std::max(lower, m_lower), std::min(upper, m_upper));
}
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