TrLinearExtrapolator.h Source File

00001 #ifndef TRLINEAREXTRAPOLATOR_H 
00002 #define TRLINEAREXTRAPOLATOR_H 1
00003 
00004 // Include file
00005 #include "GaudiAlg/GaudiTool.h"
00006 #include "TrKernel/ITrExtrapolator.h"
00007 
00008 // Forward declaration
00009 class TrState;
00010 
00024 class TrLinearExtrapolator: public GaudiTool,
00025                             virtual public ITrExtrapolator {
00026 
00027 public:
00029   TrLinearExtrapolator(const std::string& type, 
00030                        const std::string& name, 
00031                        const IInterface* parent);
00032 
00034   virtual ~TrLinearExtrapolator();
00035 
00037   virtual StatusCode propagate( TrState* state,
00038                                 ParticleID partId = ParticleID(211) );
00039 
00041   virtual StatusCode propagate( TrState* state,
00042                                 HepPlane3D plane,
00043                                 ParticleID partId = ParticleID(211) );
00044 
00046   virtual StatusCode propagate( TrState* state,
00047                                 double zNew,
00048                                 ParticleID partId = ParticleID(211) );
00049 
00051   virtual const HepMatrix& transportMatrix() const;
00052 
00053 private:
00054 
00056   HepMatrix m_F; 
00057 
00059   void extrapolate( TrState* state) const;
00060 
00061 };
00062 
00063 #endif // TRLINEAREXTRAPOLATOR_H