FacetFitter.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <tracking/trackingUtilities/numerics/Matrix.h>
 
#include <limits>
 
namespace Belle2 {
  namespace TrackingUtilities {
    class UncertainParameterLine2D;
    class CDCFacet;
  }
  namespace TrackFindingCDC {

    class FacetFitter {
 
    public:
      static double fit(const TrackingUtilities::CDCFacet& facet,
                        int nSteps = 100,
                        double maxChi2 = std::numeric_limits<double>::infinity());

      static TrackingUtilities::UncertainParameterLine2D fit(const TrackingUtilities::CDCFacet& fromFacet,
                                                             const TrackingUtilities::CDCFacet& toFacet,
                                                             int nSteps = 100);

      static double fitChi2(const TrackingUtilities::CDCFacet& fromFacet,
                            const TrackingUtilities::CDCFacet& toFacet);

      static TrackingUtilities::UncertainParameterLine2D fit(TrackingUtilities::Matrix<double, 3, 3> xyl,
                                                             TrackingUtilities::Matrix<double, 3, 1> w,
                                                             int nSteps = 100);
    };
  }
}