CbmClusteringSL.cxx

Go to the documentation of this file.

/* Copyright (C) 2012-2013 GSI/JINR-LIT, Darmstadt/Dubna
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Grigory Kozlov, Andrey Lebedev [committer] */
 
/*
 * CbmClusteringSL.cxx
 *
 *  Created on: Apr 10, 2012
 *      Author: kozlov
 */
 
#include "CbmClusteringSL.h"
 
#include "CbmClusteringGeometry.h"
#include "CbmMCTrack.h"
#include "CbmMuchDigi.h"
#include "CbmMuchGeoScheme.h"
#include "CbmMuchLayerSide.h"
#include "CbmMuchModuleGem.h"
#include "CbmMuchPad.h"
#include "CbmMuchPixelHit.h"
#include "CbmMuchPoint.h"
#include "CbmStsHit.h"
#include "CbmStsPoint.h"
#include "FairRootManager.h"
#include "TClonesArray.h"
 
#include <cassert>
#include <iostream>
 
using std::cout;
using std::endl;
 
CbmClusteringSL::CbmClusteringSL() : fS(NULL), fNumbersOfPads(NULL), fA1(NULL), fClusters(NULL)
{
  fNofPads       = 0;
  fNofActivePads = 0;
  fNofClusters   = 0;
}
 
CbmClusteringSL::CbmClusteringSL(CbmClusteringGeometry* moduleGeo)
  : fS(NULL)
  , fNumbersOfPads(NULL)
  , fA1(NULL)
  , fClusters(NULL)
{
  //Initialization
  fNofPads       = moduleGeo->GetNPads();
  fNofActivePads = moduleGeo->GetAPadsNom();
  fNofClusters   = fNofActivePads;
  fA1            = new UInt_t[fNofPads];
  fS             = new Bool_t[fNofPads];
  fClusters      = new Cluster[fNofActivePads];
  fNumbersOfPads = new Int_t[fNofPads];
  Int_t nom      = 0;
  for (Int_t iPad = 0; iPad < fNofPads; iPad++) {
    fA1[iPad]            = moduleGeo->GetPadCharge(iPad);  //Filling primary array of charges
    fS[iPad]             = 0;
    fNumbersOfPads[iPad] = 0;
    if (fA1[iPad] > 0) {
      fS[iPad] = 1;  //Filling array of states
      nom++;
      fNumbersOfPads[iPad] = nom;  //Filling array of relations Pad/Cluster
    }
  }
}
 
CbmClusteringSL::~CbmClusteringSL()
{
  delete[] fA1;
  delete[] fS;
  delete[] fNumbersOfPads;
  delete[] fClusters;
}
 
void CbmClusteringSL::SLRec1(CbmClusteringGeometry* moduleGeo, Int_t activePad)
{
  for (Int_t iPad = 0; iPad < moduleGeo->GetNeighborsNum(activePad); iPad++) {
    if (fS[moduleGeo->GetNeighbor(activePad, iPad)] == 1) {
      fNumbersOfPads[moduleGeo->GetNeighbor(activePad, iPad)] = fNumbersOfPads[activePad];
      fS[moduleGeo->GetNeighbor(activePad, iPad)]             = 0;
      SLRec1(moduleGeo, moduleGeo->GetNeighbor(activePad, iPad));
    }
  }
}
 
void CbmClusteringSL::SLRec2(CbmClusteringGeometry* moduleGeo, Int_t activePad)
{
  for (Int_t iPad = 0; iPad < moduleGeo->GetGoodNeighborsNum(activePad); iPad++) {
    if (fS[moduleGeo->GetNeighbor(activePad, iPad)] == 1) {
      fNumbersOfPads[moduleGeo->GetNeighbor(activePad, iPad)] = fNumbersOfPads[activePad];
      fS[moduleGeo->GetNeighbor(activePad, iPad)]             = 0;
      SLRec2(moduleGeo, moduleGeo->GetNeighbor(activePad, iPad));
    }
  }
}
 
void CbmClusteringSL::MainClusteringSL(CbmClusteringGeometry* moduleGeo, Int_t algVersion)
{
  //algVersion == 1 -> all neighbors
  //algVersion == 2 -> only good neighbors
  //First step of clustering algorithm: Creating relationships between objects
  for (Int_t iPad = 0; iPad < fNofPads; iPad++) {
    if ((fA1[iPad] > 0) && (fS[iPad] == 1)) {
      if (algVersion == 1) {
        SLRec1(moduleGeo, iPad);
      }
      if (algVersion == 2) {
        SLRec2(moduleGeo, iPad);
      }
      if ((algVersion != 1) && (algVersion != 2)) {
        std::cout << " - CbmClusteringSL: Error! Unsupported version of the "
                     "algorithm.\n";
      }
    }
  }
  for (Int_t iPad = 0; iPad < fNofPads; iPad++) {
    if (fA1[iPad] > 0) {
      fS[iPad] = 1;
    }
  }
  for (Int_t iPad = 0; iPad < fNofActivePads; iPad++)  //All clusters are empty
  {
    //fClusters[iPad].nofCluster = 0;
    fClusters[iPad].fNofPads = 0;
    fClusters[iPad].fCharge  = 0;
    fClusters[iPad].fX       = 0;
    fClusters[iPad].fY       = 0;
  }
 
  //Second step of clustering algorithm: Creating clusters by relationships
  Int_t nomCl   = 0;
  Int_t Replase = 0;
  for (Int_t iPad = 0; iPad < fNofPads; iPad++) {
    if ((fA1[iPad] != 0) && (fS[iPad] == 1))
    //if(activePad1[iPad] != 0)
    {
      Replase = fNumbersOfPads[iPad];
      nomCl++;
      Int_t padInCluster = 0;
      for (Int_t nPad = 0; nPad < fNofPads; nPad++) {
 
        if ((fNumbersOfPads[nPad] == Replase) && (moduleGeo->GetPadCharge(nPad) > 0) && (fS[nPad] == 1)) {
          fNumbersOfPads[nPad] = nomCl;
          fS[nPad]             = 0;
          //Filling clusters
          fClusters[nomCl - 1].fX += (moduleGeo->GetX0(nPad) * moduleGeo->GetPadCharge(nPad));
          fClusters[nomCl - 1].fY += (moduleGeo->GetY0(nPad) * moduleGeo->GetPadCharge(nPad));
          fClusters[nomCl - 1].fCharge += moduleGeo->GetPadCharge(nPad);
          fClusters[nomCl - 1].fPadsInCluster.push_back(moduleGeo->GetDigiNum(nPad));
          padInCluster++;
          fClusters[nomCl - 1].fNofPads = padInCluster;
        }
      }
    }
  }
  //Hits calculation
  for (Int_t iCl = 0; iCl < nomCl; iCl++) {
    if (fClusters[iCl].fCharge == 0) {
      cout << " - MainClusteringA1: Warning! DIVISION ON ZERO!";
      break;
    }
    fClusters[iCl].fX = fClusters[iCl].fX / fClusters[iCl].fCharge;
    fClusters[iCl].fY = fClusters[iCl].fY / fClusters[iCl].fCharge;
  }
  fNofClusters = nomCl;
}
 
/*Int_t CbmClusteringSL::GetCluster(Int_t iCluster)
{
        return fClusters[iCluster].nofCluster;
}*/
Float_t CbmClusteringSL::GetX0(Int_t iCluster) { return fClusters[iCluster].fX; }
Float_t CbmClusteringSL::GetY0(Int_t iCluster) { return fClusters[iCluster].fY; }
UInt_t CbmClusteringSL::GetClCharge(Int_t iCluster) { return fClusters[iCluster].fCharge; }
Int_t CbmClusteringSL::GetNofPads(Int_t iCluster) { return fClusters[iCluster].fNofPads; }
Int_t CbmClusteringSL::GetPadInCluster(Int_t iCluster, Int_t iPad) { return fClusters[iCluster].fPadsInCluster[iPad]; }