#include <string>
#include <iostream>

#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"

#include "JPhysics/JGeanx.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 *
 * Example program to histogram photon emission profile from showers using JPHYSICS::JGeanx.
 * \author mdejong
 */
int main(int argc, char* argv[])
{
  using namespace std;

  string  outputFile;
  int     debug;

  try {

    JParser<> zap("Example program to histogram photon emission profile from showers.");

    zap['o'] = make_field(outputFile) = "geanx.root";
    zap['d'] = make_field(debug)      = 2;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }

  using namespace JPP;


  TFile out(outputFile.c_str(), "recreate");

  TH1D h1("Probability", NULL, 1000, -1.0, +1.0);
  TH1D h2("Integral",    NULL, 1000, -1.0, +1.0);

  for(int i = 1; i <= h1.GetNbinsX(); ++i) {

    const double x = h1.GetBinCenter(i);
    
    h1.SetBinContent(i, geanx(x));
    h2.SetBinContent(i, geanx(-1.0,x));
  }

  h1.Sumw2(kFALSE);
  h2.Sumw2(kFALSE);

  out.Write();
  out.Close();
}