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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Sim/Background/ConstantBackground.cpp
//! @brief Implements class ConstantBackground.
//!
//! @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 "Sim/Background/ConstantBackground.h"
#include "Base/Util/Assert.h"
ConstantBackground::ConstantBackground(const std::vector<double> P)
: IBackground(P)
, m_background_value(m_P[0])
{
validateOrThrow();
}
ConstantBackground::ConstantBackground(double background_value)
: ConstantBackground(std::vector<double>{background_value})
{
}
ConstantBackground* ConstantBackground::clone() const
{
return new ConstantBackground(m_background_value);
}
double ConstantBackground::addBackground(double intensity) const
{
ASSERT(m_validated);
return intensity + m_background_value;
}
std::string ConstantBackground::validate() const
{
std::vector<std::string> errs;
requestGe0(errs, m_background_value, "background_value");
if (!errs.empty())
return jointError(errs);
m_validated = true;
return "";
}
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