foam_demopers.C: This simple macro demonstrates persistency of FOAM object.

//
// This simple macro demonstrates persistency of FOAM object.
// First run macro foam_demo.C to create file foam_demo.root with FOAM object.
//
// Next type root -l foam_demopers.C from shell command line
//

Int_t foam_demopers()
{
  gSystem->Load("libFoam.so");
  gROOT->ProcessLine(".L foam_demo.C+");
  //******************************************
  cout<<"====================== TestVector ================================"<<endl;
  TFile fileA("foam_demo.root");
  fileA.cd();
  cout<<"------------------------------------------------------------------"<<endl;
  fileA.ls();
  cout<<"------------------------------------------------------------------"<<endl;
  fileA.Map();
  cout<<"------------------------------------------------------------------"<<endl;
  fileA.ShowStreamerInfo();
  cout<<"------------------------------------------------------------------"<<endl;
  fileA.GetListOfKeys()->Print();
  cout<<"------------------------------------------------------------------"<<endl;
  //*******************************************
  TFoam  *FoamX = (TFoam*)fileA.Get("FoamX");
  //*******************************************
//  FoamX->PrintCells();
  FoamX->CheckAll(1);

 Double_t *MCvect =new Double_t[2]; // 2-dim vector generated in the MC run

 for(long loop=0; loop<50000; loop++){
    FoamX->MakeEvent();            // generate MC event
    FoamX->GetMCvect( MCvect);     // get generated vector (x,y)
    Double_t x=MCvect[0];
    Double_t y=MCvect[1];
    if(loop<10) cout<<"(x,y) =  ( "<< x <<", "<< y <<" )"<<endl;
    }// loop
  //
  Double_t IntNorm, Errel;
  FoamX->Finalize(   IntNorm, Errel);     // final printout
  Double_t MCresult, MCerror;
  FoamX->GetIntegMC( MCresult, MCerror);  // get MC integral, should be one
  cout << " MCresult= " << MCresult << " +- " << MCerror <<endl;
  cout<<"===================== TestPers FINISHED ======================="<<endl;
  return 0;
}
//_____________________________________________________________________________
//