JProject3D.cc

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#include <string>
#include <iostream>
#include <iomanip>
#include <vector>
#include <cmath>
 
#include "TROOT.h"
#include "TFile.h"
#include "TKey.h"
#include "TH3.h"
#include "TProfile3D.h"
#include "TString.h"
#include "TRegexp.h"
 
#include "JGizmo/JRootObjectID.hh"
#include "JGizmo/JGizmoToolkit.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
#include "Jeep/JPrint.hh"
 
 
/**
 * \file
 * Auxiliary program to project 3D histograms.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  vector<JRootObjectID> inputFile;
  string                outputFile;
  char                  project;
  int                   debug;
 
  try {
 
    JParser<> zap("Auxiliary program to project 3D histograms.");
 
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['P'] = make_field(project,    "projection")                  = ' ', 'x', 'X', 'y', 'Y', 'z', 'Z';
    zap['o'] = make_field(outputFile, "ROOT file with histogram(s)") = "project.root";
    zap['d'] = make_field(debug)      = 1;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
  const bool px = (project == 'x' || project == 'X');  // projection on x-axis
  const bool py = (project == 'y' || project == 'Y');  // projection on y-axis
  const bool pz = (project == 'z' || project == 'Z');  // projection on z-axis
 
  if ((px ? 1 : 0) +
      (py ? 1 : 0) +
      (pz ? 1 : 0) != 1) {
    FATAL("Invalid operation: "
          << (px ? "" : "no") << " X projection " << " and " 
          << (py ? "" : "no") << " Y projection " << " and " 
          << (pz ? "" : "no") << " Z projection " << endl);
  }
  
  vector<TObject*> listOfObjects;
 
  for (vector<JRootObjectID>::const_iterator input = inputFile.begin(); input != inputFile.end(); ++input) {
    
    DEBUG("Input: " << *input << endl);
    
    TDirectory* dir = getDirectory(*input);
 
    if (dir == NULL) {
      ERROR("File: " << input->getFullFilename() << " not opened." << endl);
      continue;
    }
 
    const TRegexp regexp(input->getObjectName());
 
    TIter iter(dir->GetListOfKeys());
 
    for (TKey* key; (key = (TKey*) iter.Next()) != NULL; ) {
 
      const TString tag(key->GetName());
      
      DEBUG("Key: " << tag << " match = " << tag.Contains(regexp) << endl);
 
      // option match
 
      if (tag.Contains(regexp) && isTObject(key)) {
        
        TH3* h3 = dynamic_cast<TH3*>(key->ReadObj());
 
        if (h3 != NULL) {
          
          if      (px) 
            listOfObjects.push_back(h3->ProjectionX(MAKE_CSTRING(h3->GetName() << "_px")));
          else if (py)
            listOfObjects.push_back(h3->ProjectionY(MAKE_CSTRING(h3->GetName() << "_py")));
          else if (pz)
            listOfObjects.push_back(h3->ProjectionZ(MAKE_CSTRING(h3->GetName() << "_pz")));
        }
      }
    }
  }
 
  if (!listOfObjects.empty()) {
 
    TFile out(outputFile.c_str(), "recreate");
    
    for (vector<TObject*>::const_iterator i = listOfObjects.begin(); i != listOfObjects.end(); ++i) {
      (*i)->Write();
    }
      
    out.Write();
    out.Close();
  }
}