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


/** CbmTrackExtrapolator.h
 *@author A.Lebedev <alebedev@jinr.ru>
 **
 **  Base class for track extrapolation algorithms.
 **  Extrapolation algorithm do not have to take into account material.
 **  
 **/  

#ifndef CBMTRACKEXTRAPOLATOR_H
#define CBMTRACKEXTRAPOLATOR_H

#include "CbmTool.h"

class CbmTrackParam;

class CbmTrackExtrapolator : public CbmTool {

public:

   //Constructors
   CbmTrackExtrapolator();
   CbmTrackExtrapolator(const std::string& name);   

   //Destructors
   virtual ~CbmTrackExtrapolator();

   // 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