CDCBFieldUtil.h

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2014 - Belle II Collaboration                             *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Oliver Frost                                             *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#pragma once
 
#include <tracking/trackFindingCDC/numerics/ERotation.h>
#include <tracking/trackFindingCDC/numerics/ESign.h>
 
namespace Belle2 {
  namespace TrackFindingCDC {
    class Vector3D;
    class Vector2D;
 
    class CDCBFieldUtil {
    public:
      static bool isOff();
 
      static ESign getBFieldZSign();
 
      static double getBFieldZ();
 
      static double getBFieldZ(const Vector2D& pos2D);
 
      static double getBFieldZ(const Vector3D& pos3D);
 
      static double getAlphaFromBField(double bField);
 
      static double getAlphaZ(const Vector2D& pos2D);
 
      static double getAlphaZ(const Vector3D& 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 Vector2D& pos2D);
 
      static double absMom2DToBendRadius(double absMom2D,
                                         const Vector3D& pos3D);
 
      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        double bZ);
 
      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        const Vector2D& pos2D);
 
      static double absMom2DToCurvature(double absMom2D,
                                        double charge,
                                        const Vector3D& pos3D);
 
      static double curvatureToAbsMom2D(double curvature,
                                        double bZ);
 
      static double curvatureToAbsMom2D(double curvature,
                                        const Vector2D& pos2D);
 
      static double curvatureToAbsMom2D(double curvature,
                                        const Vector3D& pos3D);
    };
  }
}