CbmPrimaryVertexFinder.h

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// -------------------------------------------------------------------------
// -----                CbmPrimaryVertexFinder header file             -----
// -----                  Created 28/11/05  by V. Friese               -----
// -------------------------------------------------------------------------
 
/** CbmPrimaryVertexFinder
 *@author V.Friese ,v.friese@gsi.de>
 **
 ** Abstract base class for primary vertex finder algorithms. Each derived
 ** class must implement the method FindPrimaryVertex. The input is the
 ** array of CbmStsTracks (later to be replaced by CbmGlobalTracks), the
 ** output is one object of type CbmVertex.
 **/
 
#ifndef CBMPRIMARYVERTEXFINDER_H
#define CBMPRIMARYVERTEXFINDER_H 1
 
#include "TObject.h"
 
class TClonesArray;
class CbmVertex;
 
class CbmPrimaryVertexFinder : public TObject
{
 
  public:
    /** Default constructor **/
    CbmPrimaryVertexFinder() {};
 
    /** Destructor **/
    virtual ~CbmPrimaryVertexFinder() {};
 
    /** Initialisation (virtual). If needed, to be implemented in the
     ** derived class. Else no action.
     **/
    virtual void Init() {};
 
    /** Execution of PV finding (abstract). To be implemented in
     ** the derived class. Task: Take the track array and find the vertex.
     ** Set the vertex parameters of the object vertex with its SetVertex
     ** method.
     *@param tracks   TClonesArray of CbmStsTracks
     *@param vertex   Primary vertex (output)
     **/
    virtual Int_t FindPrimaryVertex(TClonesArray* tracks, CbmVertex* vertex) = 0;
 
    ClassDef(CbmPrimaryVertexFinder, 1);
};
 
#endif