/** CbmMuchDigiMatch.cxx
 **@author  M.Ryzhinskiy <m.ryzhinskiy@gsi.de>
 **@since   23.03.07
 **@version 1.0
 **
 ** Data class for matching CbmMuchDigi with CbmMuchPoint. Up to three
 ** matches are possible.
 ** The indizes of CbmMuchDigi and CbmMuchDigiMatch correspond in their
 ** respective arrays.
 ** The class holds the indices of all MuchPoints corresponding to
 ** the MuchDigi.
 **/


#include <iostream>
using std::cout;
using std::endl;

#include "CbmMuchDigiMatch.h"


// -----   Default onstructor   --------------------------------------------
CbmMuchDigiMatch::CbmMuchDigiMatch() {
  fRefIndex[0] = fRefIndex[1] = fRefIndex[2] = -1;
};

// -------------------------------------------------------------------------



// -----   Standard constructor   ------------------------------------------
CbmMuchDigiMatch::CbmMuchDigiMatch(Int_t iPoint) { 
  if ( iPoint < 0 ) {
    cout << "-W- CbmMuchDigiMatch: Illegal MuchPoint index " 
	 << iPoint << endl;
    fRefIndex[0] = -1;
  }
  else fRefIndex[0] = iPoint;
  fRefIndex[1] = fRefIndex[2] = -1;
};
// -------------------------------------------------------------------------



// -----   Destructor   ----------------------------------------------------
CbmMuchDigiMatch::~CbmMuchDigiMatch() { };
// -------------------------------------------------------------------------



// -----   Public method AddPoint   ----------------------------------------
Int_t CbmMuchDigiMatch::AddPoint(Int_t iPoint) {
  if ( iPoint < 0 ) {
    cout << "-W- CbmMuchDigiMatch::AddPoint: Illegal MuchPoint index " 
	 << iPoint << endl;
    return 0;
  }
  for (Int_t i=0; i<3; i++) {
    if (fRefIndex[i] == iPoint) return i+1; // the point already added
    if ( fRefIndex[i] == -1 ) {
      fRefIndex[i] = iPoint;
      return i+1;
    }
  }
  return 4;
}
// -------------------------------------------------------------------------

  

// -----   Public method GetRefIndex   -------------------------------------
Int_t CbmMuchDigiMatch::GetRefIndex(Int_t i) const {
  if ( i<0 || i>2 ) {
    cout << "-W- CbmMuchDigiMatch::GetRefIndex: Illegal index number "
	 << i << endl;
    return -1;
  }
  return fRefIndex[i];
}
// -------------------------------------------------------------------------



ClassImp(CbmMuchDigiMatch)