Utility.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 <Math/Vector3D.h>
#include <Math/Rotation3D.h>
 
namespace Belle2 {
  namespace arich {
 
    double Erf(double x);
 
 
    ROOT::Math::XYZVector Refraction(const ROOT::Math::XYZVector s,  const double n);
 
 
    int Refraction(ROOT::Math::XYZVector s, ROOT::Math::XYZVector norm, double n, ROOT::Math::XYZVector& a);
 
 
    ROOT::Math::XYZVector setThetaPhi(double theta, double fi);
 
 
    ROOT::Math::Rotation3D TransformFromFixed(ROOT::Math::XYZVector r);
 
 
    ROOT::Math::Rotation3D TransformToFixed(ROOT::Math::XYZVector r);
 
 
    double  ExpectedCherenkovAngle(double p, double mass, double refind);
 
 
    double SquareInt(double aaa, double fi, double mean, double sigma);
 
  } // namespace arich
} // namespace Belle2