#include <string>
#include <iostream>

#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"
#include "TH2D.h"

#include "JPhysics/JGeane.hh"

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


/**
 * \file
 *
 * Example program to histogram muon energy loss.
 * \author mdejong
 */
int main(int argc, char* argv[])
{
  using namespace std;
  using namespace JPP;

  string  outputFile;
  int     debug;

  try {

    JParser<> zap("Example program to histogram muon energy loss.");

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

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


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

  TH1D h1("h1", NULL, 900, -1.0, +8.0);
  TH2D h2("h2", NULL,  90, -1.0, +8.0, 100, 0.0, 5.0);

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

    const double x = h1.GetBinCenter(i);
    const double E = pow(10.0, x);
    
    h1.Fill(x, gWater(E));
  }

  for(int ix = 1; ix <= h2.GetXaxis()->GetNbins(); ++ix) {
    for(int iy = 1; iy <= h2.GetYaxis()->GetNbins(); ++iy) {

      const double x = h2.GetXaxis()->GetBinCenter(ix);
      const double y = h2.GetYaxis()->GetBinCenter(iy);

      const double E  = pow(10.0, x);
      const double dx = pow(10.0, y);
    
      h2.Fill(x, y, gWater(E, dx));
    }
  }

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