Params.h

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#pragma once

#include <goofit/Variable.h>

#include <Minuit2/FCNBase.h>
#include <Minuit2/MnUserParameterState.h>
#include <Minuit2/MnUserParameters.h>

#include <vector>

namespace Minuit2 = ROOT::Minuit2;

namespace GooFit {

class PdfBase;
class FCN;

class Params : public Minuit2::MnUserParameters {
    friend FCN;

  protected:
    std::vector<Variable> vars_;
    PdfBase *pdf_;
    size_t num_;

    bool do_record_{false};
    std::vector<std::vector<double>> recorded_;

  public:
    using MnUserParameters::MnUserParameters;

    Params(PdfBase &pdf);

    void SetGooFitParams(const Minuit2::MnUserParameterState &input);

    size_t size() const { return vars_.size(); };

    std::vector<double> make_minuit_vector() const;

    void from_minuit_vector(const std::vector<double> &values, bool force_changed = false);

    void set_record(bool do_record = true) { do_record_ = do_record; }

    std::vector<std::vector<double>> get_recorded() const { return recorded_; }
};
} // namespace GooFit