GeometryChi2.h

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#ifndef _MdGeometryFitterAG_GeometryChi2_h_
#define _MdGeometryFitterAG_GeometryChi2_h_

#include <Minuit2/FCNBase.h>

#include "TimeData.h"

namespace MdGeometryFitterAG {

  class GeometryChi2 : public ROOT::Minuit2::FCNBase {

      public:

        GeometryChi2(const std::vector<TimeData>& data): timeData(data) {}
        double Up() const { return 1; }   // error definition corresponding to a chi2 
        double operator()(const std::vector<double>&) const; 

      private:
        std::vector<TimeData> timeData;

  };

} // end namespace MdGeometryFitterAG

#endif