/* ======================================================================== *\
!
! *
! * This file is part of MARS, the MAGIC Analysis and Reconstruction
! * Software. It is distributed to you in the hope that it can be a useful
! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
! * It is distributed WITHOUT ANY WARRANTY.
! *
! * Permission to use, copy, modify and distribute this software and its
! * documentation for any purpose is hereby granted without fee,
! * provided that the above copyright notice appear in all copies and
! * that both that copyright notice and this permission notice appear
! * in supporting documentation. It is provided "as is" without express
! * or implied warranty.
! *
!
!
!   Author(s): Wolfgang Wittek  02/2003 <wittek@mppmu.mpg.de>
!
!   Copyright: MAGIC Software Development, 2000-2003
!
!
\* ======================================================================== */

/////////////////////////////////////////////////////////////////////////////
//                                                                         //
//  MSelFinal                                                              //
//                                                                         //
//  This is a task to evaluate the Final Cuts                              //
//  (these cuts define the final sample of gammas;                         //
//   relevant for the calculation of the effective collection areas)       //
//                                                                         //
//  to be called after the calculation of the hadroness                    //
//                                                                         //
/////////////////////////////////////////////////////////////////////////////

#include "math.h"
#include "MSelFinal.h"

#include "MParList.h"

#include "MHillas.h"
#include "MHillasSrc.h"
#include "MCerPhotEvt.h"
#include "MMcEvt.hxx"
#include "MGeomCam.h"
#include "MGeomPix.h"
#include "MHadronness.h"

#include "MLog.h"
#include "MLogManip.h"

ClassImp(MSelFinal);

// --------------------------------------------------------------------------
//
// Default constructor.
//
MSelFinal::MSelFinal(const MHillas *parhil, const MHillasSrc *parhilsrc,
                           const char *name, const char *title)
{
    fName  = name  ? name  : "MSelFinal";
    fTitle = title ? title : "Task to evaluate the Final Cuts";

    fHil    = parhil;
    fHilsrc = parhilsrc;
}

// --------------------------------------------------------------------------
//
// 
// 
// 
//
Bool_t MSelFinal::PreProcess(MParList *pList)
{
    fHadronness = (MHadronness*)pList->FindObject("MHadronness");
    if (!fHadronness)
    {
      *fLog << dbginf << "MHadronness not found... aborting." << endl;
      return kFALSE;
    }


    fMcEvt = (MMcEvt*)pList->FindObject("MMcEvt");
    if (!fMcEvt)
    {
        *fLog << dbginf << "MMcEvt not found... aborting." << endl;
        return kFALSE;
    }

    fEvt = (MCerPhotEvt*)pList->FindObject("MCerPhotEvt");
    if (!fEvt)
    {
        *fLog << dbginf << "MCerPhotEvt not found... aborting." << endl;
        return kFALSE;
    }


    fCam = (MGeomCam*)pList->FindObject("MGeomCam");
    if (!fCam)
    {
        *fLog << dbginf << "MGeomCam (Camera Geometry) missing in Parameter List... aborting." << endl;
        return kFALSE;
    }
    fMm2Deg = fCam->GetConvMm2Deg();

    *fLog << "fMm2Deg = " << fMm2Deg << endl;

    memset(fErrors, 0, sizeof(fErrors));

    return kTRUE;
}

// --------------------------------------------------------------------------
//
// Evaluate final cuts
// 
// if cuts are fulfilled      : return 0
// if they are not fullfilled : skip the remaining tasks for this event
//
Bool_t MSelFinal::Process()
{
    Int_t rc = 0;

    Double_t alphacut = 20.0;

    Double_t modalpha = fabs( fHilsrc->GetAlpha() ); 
    Double_t h = fHadronness->GetHadronness();

    if ( h>0.5  ||  modalpha > alphacut )
    {
      *fLog << "MSelFinal::Process; h, alpha = " << h << ",  " 
            << fHilsrc->GetAlpha() << endl;
      rc = 1;
    }    

    fErrors[rc]++;

    return rc==0 ? kTRUE : kCONTINUE;
}

// --------------------------------------------------------------------------
//
//  Prints some statistics about the Final selections.
//
Bool_t MSelFinal::PostProcess()
{
    if (GetNumExecutions()==0)
        return kTRUE;

    *fLog << inf << endl;
    *fLog << GetDescriptor() << " execution statistics:" << endl;
    *fLog << dec << setfill(' ');
    *fLog << " " << setw(7) << fErrors[1] << " (" << setw(3) << (int)(fErrors[1]*100/GetNumExecutions()) << "%) Evts skipped due to: Final selections are not fullfilled" << endl;

    *fLog << " " << fErrors[0] << " (" << (int)(fErrors[0]*100/GetNumExecutions()) << "%) Evts survived Final selections!" << endl;
    *fLog << endl;

    return kTRUE;
}