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File indexing completed on 2025-02-21 10:00:32
0001 /***********************************************************************************\ 0002 * (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations * 0003 * * 0004 * This software is distributed under the terms of the Apache version 2 licence, * 0005 * copied verbatim in the file "LICENSE". * 0006 * * 0007 * In applying this licence, CERN does not waive the privileges and immunities * 0008 * granted to it by virtue of its status as an Intergovernmental Organization * 0009 * or submit itself to any jurisdiction. * 0010 \***********************************************************************************/ 0011 #ifndef GAUDIKERNEL_IMAGNETICFIELDSVC_H 0012 #define GAUDIKERNEL_IMAGNETICFIELDSVC_H 0013 0014 // Include files 0015 #include "GaudiKernel/IService.h" 0016 #include "GaudiKernel/StatusCode.h" 0017 0018 // Forward declarations 0019 namespace ROOT { 0020 namespace Math { 0021 class DefaultCoordinateSystemTag; 0022 0023 // from Math/Point3Dfwd.h 0024 template <class CoordSystem, class Tag> 0025 class PositionVector3D; 0026 // from Math/Vector3Dfwd.h 0027 template <class CoordSystem, class Tag> 0028 class DisplacementVector3D; 0029 // from Math/Point3Dfwd.h 0030 template <typename T> 0031 class Cartesian3D; 0032 // from Math/Point3Dfwd.h 0033 typedef PositionVector3D<Cartesian3D<double>, DefaultCoordinateSystemTag> XYZPoint; 0034 // from Math/Vector3Dfwd.h 0035 typedef DisplacementVector3D<Cartesian3D<double>, DefaultCoordinateSystemTag> XYZVector; 0036 } // namespace Math 0037 } // namespace ROOT 0038 0039 /** @class IMagneticFieldSvc IMagneticFieldSvc.h GaudiKernel/IMagneticFieldSvc.h 0040 0041 The interface to the MagneticFieldSvc 0042 0043 @author Iain Last 0044 */ 0045 class GAUDI_API IMagneticFieldSvc : virtual public IService { 0046 0047 public: 0048 /// InterfaceID 0049 DeclareInterfaceID( IMagneticFieldSvc, 2, 0 ); 0050 0051 // Get the magnetic field vector at a given point in space. 0052 // Input: XYZPoint - Point at which magnetic field vector is to be given. 0053 // Output: XYZVector - Magnetic field vector. 0054 // Return: StatusCode SUCCESS if calculation was performed. 0055 virtual StatusCode fieldVector( const ROOT::Math::XYZPoint& xyz, ROOT::Math::XYZVector& fvec ) const = 0; 0056 }; 0057 0058 #endif // GAUDIKERNEL_IMAGNETICFIELDSVC_H
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