UncertainHelix.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 <framework/dataobjects/Helix.h>
 
#include <TMatrixDSym.h>
 
 
namespace Belle2 {
  class UncertainHelix : public Helix {
  public:
    UncertainHelix();
 
    UncertainHelix(const ROOT::Math::XYZVector& position,
                   const ROOT::Math::XYZVector& momentum,
                   const short int charge,
                   const double bZ,
                   const TMatrixDSym& cartesianCovariance,
                   const double pValue);
 
    UncertainHelix(const double& d0,
                   const double& phi0,
                   const double& omega,
                   const double& z0,
                   const double& tanLambda,
                   const TMatrixDSym& covariance,
                   const double pValue);
 
    TMatrixDSym getCartesianCovariance(const double bZ_tesla = 1.5) const;
 
    double getPValue() const
    { return m_pValue; }
 
    const TMatrixDSym& getCovariance() const
    { return m_covariance; }
 
    void reverse();
 
    double passiveMoveBy(const ROOT::Math::XYZVector& by)
    { return passiveMoveBy(by.X(), by.Y(), by.Z()); }
 
    double passiveMoveBy(const double& byX,
                         const double& byY,
                         const double& byZ);
 
  private:
    TMatrixDSym m_covariance;
 
    Double32_t m_pValue;
 
    ClassDef(UncertainHelix, 2); 
  };
}