CDCBFieldUtil.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/ERotation.h>
#include <tracking/trackingUtilities/numerics/ESign.h>
 
#include <Math/Vector3D.h>
#include <Math/Vector2D.h>
 
namespace Belle2 {
  namespace TrackingUtilities {

    class CDCBFieldUtil {
    public:
      static bool isOff();

      static ESign getBFieldZSign();

      static double getBFieldZ();

      static double getBFieldZ(const ROOT::Math::XYVector& pos2D);

      static double getBFieldZ(const ROOT::Math::XYZVector& pos3D);

      static double getAlphaFromBField(double bField);

      static double getAlphaZ(const ROOT::Math::XYVector& pos2D);

      static double getAlphaZ(const ROOT::Math::XYZVector& pos3D);

      static ESign ccwInfoToChargeSign(ERotation ccwInfo);

      static ERotation chargeSignToERotation(ESign chargeSign);

      static ERotation chargeToERotation(double charge);

      static double absMom2DToBendRadius(double absMom2D,
                                         double bZ);

      static double absMom2DToBendRadius(double absMom2D,
                                         const ROOT::Math::XYVector& pos2D);

      static double absMom2DToBendRadius(double absMom2D,
                                         const ROOT::Math::XYZVector& pos3D);

      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        double bZ);

      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        const ROOT::Math::XYVector& pos2D);

      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        const ROOT::Math::XYZVector& pos3D);

      static double curvatureToAbsMom2D(double curvature,
                                        double bZ);

      static double curvatureToAbsMom2D(double curvature,
                                        const ROOT::Math::XYVector& pos2D);

      static double curvatureToAbsMom2D(double curvature,
                                        const ROOT::Math::XYZVector& pos3D);
    };
  }
}