AsciiNeutronReader Class Reference

#include <AsciiNeutronReader.h>

Inheritance diagram for AsciiNeutronReader:

Public Member Functions
	AsciiNeutronReader (std::string fileNameBase)
virtual void	readNextEvent (int chamberType, edm::PSimHitContainer &result)
Public Member Functions inherited from NeutronReader
	NeutronReader ()
virtual	~NeutronReader ()

Private Member Functions
int	read_nhits (std::ifstream &fin, int chamberType)
void	resetStreampos (std::ifstream &fin, int chamberType)

Private Attributes
std::string	theFileNameBase
std::vector< std::streampos >	theStreamPos

Detailed Description

This reads patterns of neutron hits in muon chambers from an ASCII database, so they can be superimposed onto signal events. It reads the events sequentially, and loops back to the beginning when it reaches EOF

Definition at line 17 of file AsciiNeutronReader.h.

Constructor & Destructor Documentation

AsciiNeutronReader::AsciiNeutronReader

(

std::string

fileNameBase

)

Definition at line 10 of file AsciiNeutronReader.cc.

                                                          :
  theFileNameBase(fileNameBase),
  //theStreamPos(nChamberTypes+1, 0) //TODO WON"T WORK!  replace with a map 
  theStreamPos(11,0)
{
}

Member Function Documentation

int AsciiNeutronReader::read_nhits ( std::ifstream &  fin, int  chamberType  )

private

Definition at line 45 of file AsciiNeutronReader.cc.

References LogDebug, nhits, resetStreampos(), and theStreamPos.

Referenced by readNextEvent().

                                                                  {
  int nhits = 0;
    // go to the last saved place
  fin.seekg(theStreamPos[chamberType]);
  if(fin.eof()) {
    resetStreampos(fin, chamberType);
  }
  LogDebug("NeutronReader") << "starting from pos " << theStreamPos[chamberType] 
                  << " EOF " << fin.eof();
  fin >> nhits;
  if(fin.eof()) {
    resetStreampos(fin, chamberType);
    fin >> nhits;
  }
  LogDebug("NeutronReader") << "returning nhits " << nhits;
  return nhits;
}

void AsciiNeutronReader::readNextEvent ( int  chamberType, edm::PSimHitContainer &  result  )

virtual

Implements NeutronReader.

Definition at line 18 of file AsciiNeutronReader.cc.

References edm::hlt::Exception, cmsRelvalreport::exit, MillePedeFileConverter_cfg::fileName, groupFilesInBlocks::fin, recoMuon::in, nhits, AlCaHLTBitMon_ParallelJobs::p, phi, read_nhits(), theFileNameBase, theStreamPos, and theta().

                                                                                    {
  stringstream fileName;
  fileName << theFileNameBase << chamberType;
  ifstream fin(fileName.str().c_str(), ios::in);
  if(!fin.is_open()) {
    throw cms::Exception("NeutronReader") 
      << "Muon neutron noise file missing " << fileName.str();
  }

  int nhits = read_nhits(fin, chamberType);
  for(int ihit = 0; ihit < nhits; ++ihit) {
    float entryX, entryY, entryZ, exitX, exitY, exitZ;
    float p, tof, eloss, theta, phi;
    int type, layer, track;

    fin >> entryX >> entryY >> entryZ
        >> exitX  >> exitY  >> exitZ
        >> p >> tof >> eloss >> type >> layer >> track >> theta >> phi;
    LocalPoint entry(entryX, entryY, entryZ);
    LocalPoint exit (exitX,  exitY,  exitZ);
    PSimHit phit(entry, exit, p, tof, eloss, type, layer, track, theta, phi);
    result.push_back(phit);
  }
  theStreamPos[chamberType] = fin.tellg();
}

void AsciiNeutronReader::resetStreampos ( std::ifstream &  fin, int  chamberType  )

private

Definition at line 64 of file AsciiNeutronReader.cc.

References LogDebug, and theStreamPos.

Referenced by read_nhits().

                                                                       {
  LogDebug("NeutronReader") << "reached EOF, resetting streampos ";
  theStreamPos[chamberType] = 0;
  fin.clear();
  fin.seekg(0, ios::beg);
}

Member Data Documentation

std::string AsciiNeutronReader::theFileNameBase

private

Definition at line 29 of file AsciiNeutronReader.h.

Referenced by readNextEvent().

std::vector<std::streampos> AsciiNeutronReader::theStreamPos

private

Definition at line 30 of file AsciiNeutronReader.h.

Referenced by read_nhits(), readNextEvent(), and resetStreampos().