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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Sim/Fitting/IterationInfo.h
//! @brief Defines class IterationInfo.
//!
//! @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)
//
// ************************************************************************************************
#ifndef BORNAGAIN_SIM_FITTING_ITERATIONINFO_H
#define BORNAGAIN_SIM_FITTING_ITERATIONINFO_H
#include "Fit/Param/Parameters.h"
#include <map>
#include <string>
//! Stores fit iteration info to track fit flow from various observers.
//! Used in context of FitObjective.
class IterationInfo {
public:
IterationInfo();
void update(const mumufit::Parameters& params, double chi2);
//! Returns current number of minimizer iterations.
unsigned iterationCount() const { return m_iteration_count; }
double chi2() const { return m_chi2; }
mumufit::Parameters parameters() const { return m_current_parameters; }
//! Returns map of fit parameter names and its current values.
std::map<std::string, double> parameterMap() const;
private:
double m_chi2;
mumufit::Parameters m_current_parameters;
unsigned m_iteration_count;
};
#endif // BORNAGAIN_SIM_FITTING_ITERATIONINFO_H
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