// -------------------------------------------------------------------------
// -----                  CbmTrackExtrapolator header file               -----
// -----                  Created 16/07/07  by A. Lebedev               -----
// -------------------------------------------------------------------------


/** CbmTrackExtrapolator.h
 *@author A.Lebedev <alebedev@jinr.ru>
 **
 **  Interface class for track extrapolation algorithms
 **/  

#include "CbmRootManager.h"

#ifndef CbmTrackExtrapolatorH
#define CbmTrackExtrapolatorH

class CbmTrackParam;

class CbmTrackExtrapolator {

public:

   //Constructors
   CbmTrackExtrapolator();

   //Destructors
   virtual ~CbmTrackExtrapolator();

   // Init for magnetic field
   virtual void Init();
   
   // Pure virtual functions for track parameters extrapolation
   virtual void Extrapolate( const CbmTrackParam *pParamIn,
                                   CbmTrackParam *pParamOut,
                                   Double_t zOut) = 0;
                                 
   virtual void Extrapolate( CbmTrackParam *pParam, 
                             Double_t zOut ) = 0;              

   ClassDef(CbmTrackExtrapolator,1)
};

#endif