//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Straight line pattern recognition using a 2-dim
//      Projection. Internally, a Hough Transform is used.
//      
//
// Environment:
//      Software developed for the PANDA Detector at FAIR.
//
// Author List:
//      Felix Boehmer           TUM      (original author)  
//
//-----------------------------------------------------------

#ifndef TPCSLRPRTASK_H
#define TPCSLRPRTASK_H

//Base class
#include "FairTask.h"

#include "TClonesArray.h"
#include "TString.h"
#include "TF1.h"




// Collaborating Class Declarations ------------------------

class PndTpcCluster;
class Hough2DNode;
class PndTpcDigiPar;

class PndTpcSLPatternRecoTask : public FairTask {

 public:
  
  // Constructor ----------------------------------------------
  
  PndTpcSLPatternRecoTask();
  ~PndTpcSLPatternRecoTask();
  
  virtual InitStatus Init();	 
  virtual void Exec(Option_t* opt);
  
  
  // Setters --------------------------------------------------
  
  void SetPersistence(Bool_t opt=kTRUE) {fPersistence=opt;} 
  void SetClusterBranchName(TString cln) {fClusterBranchName=cln;}
  void SetTrackBranchName(TString tn) {fTrackBranchName=tn;}

  void SetSecondarySuppression(Bool_t opt=kTRUE) {fSecondarySupp=opt;}

  void SetParameterSpace(double* mins, double* maxs);
  void SetParameterSpace(double min1, double min2, double max1, double max2);

  void SetDepth(int depth) {fDepth=depth;}
  void SetThresh(int thresh) {fThresh=thresh;}
  void SetMinCandHits(int min) {fMin=min;}

  void SetProjectionXZ() {fXZ=true;fZY=false;} //find lines in X-Z projection 
  void SetProjectionZY() {fZY=true;fXZ=false;} //find lines in Z-Y projection (cosmics)
  
  
 private:

  double fMins[2];
  double fMaxs[2];

  unsigned int fDepth;    //termination depth of the FHT search
  unsigned int fThresh;   //STATIC threshold of the FTH search 
  unsigned int fMin;      //minimum track candidate size
  
  Bool_t fPersistence;
  Bool_t fSecondarySupp;
  Bool_t fDistSorting;
  Bool_t fXZ;
  Bool_t fZY;
  
  
  TString fClusterBranchName;
  TString fTrackBranchName;
  
  TClonesArray* fClusterArray;
  TClonesArray* fTrackArray;
  
  PndTpcDigiPar* fPar;
  TF1* fRep; //Hough space representation

  int counter;

  // Private methods -----------------------------------------
  //bool compareNodes (Hough2DNode* n1, Hough2DNode* n2); 

  
 public:
  ClassDef(PndTpcSLPatternRecoTask,1)
	
};

#endif