GFGeant4Field.h

/**************************************************************************
 * Belle II detector background library                                   *
 * Copyright(C) 2011  Belle II Collaboration                              *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Andreas Moll, Martin Heck                                *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#pragma once
#include <framework/geometry/BFieldManager.h>
#include <framework/gearbox/Unit.h>
#include <genfit/AbsBField.h>
 
class GFGeant4Field : public genfit::AbsBField {
public:
  GFGeant4Field(): genfit::AbsBField() {}
 
  TVector3 get(const TVector3& position) const override
  {
    static double conversion{1. / Belle2::Unit::kGauss};
    return Belle2::BFieldManager::getField(position) * conversion;
  }
};