/*
 * TofDedxHCut.cpp
 *
 *  Created on: 5 apr 2011
 *      Author: Nicola Mori
 */

/*! @file TofDedxHCut.cpp The TofDedxHCut class implementation file. */

#include "TofDedxHCut.h"

const float TofDedxHCut::_S11_SA_params[] = { 1.5, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };
const float TofDedxHCut::_S12_SA_params[] = { 1.5, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };
const float TofDedxHCut::_S21_SA_params[] = { 1.6, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };
const float TofDedxHCut::_S22_SA_params[] = { 1.6, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };
const float TofDedxHCut::_S31_SA_params[] = { 1.6, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };
const float TofDedxHCut::_S32_SA_params[] = { 1.6, 1.2, -0.15, -2., 0.8, 1.6, 1.2, -0.2, 0., 0.8 };

TofDedxHCut::TofDedxHCut(const char *cutName, unsigned int layer, bool standAlone) :
  PamCut(cutName), _layer(layer), _standAlone(standAlone), _p(NULL) {

  switch (_layer) {
  case S11:
    _p = _S11_SA_params;
    break;
  case S12:
    _p = _S12_SA_params;
    break;
  case S21:
    _p = _S21_SA_params;
    break;
  case S22:
    _p = _S22_SA_params;
    break;
  case S31:
    _p = _S31_SA_params;
    break;
  case S32:
    _p = _S32_SA_params;
    break;
  default:
    _p = _S21_SA_params;
  }

}

int TofDedxHCut::Check(PamLevel2 *event) {

  static int trkSeqNo;
  if (_standAlone)
    trkSeqNo = 0;
  else {
    for (int i = 0; i < event->GetToFLevel2()->ntrk(); i++) {
      if (event->GetToFLevel2()->GetToFTrkVar(i)->trkseqno == event->GetTrack(0)->GetTrkTrack()->GetSeqNo())
        trkSeqNo = i;
    }
  }

  float beta = event->GetToFLevel2()->GetToFTrkVar(trkSeqNo)->beta[12];

  static unsigned int auxLayer;
  static float dEdx;
  static unsigned int currLayer;
  static unsigned int nLayers;

  auxLayer = _layer;
  dEdx = 0;
  currLayer = 0;
  nLayers = 0;
  while (auxLayer > 0) {
    if ((auxLayer & 0x1) == 1) {
      dEdx += event->GetToFLevel2()->GetdEdx(trkSeqNo, currLayer, 100);
      nLayers++;
    }
    currLayer++;
    auxLayer >>= 1;
  }

  dEdx /= nLayers;

  if (dEdx < 1 / (_p[0] * beta + _p[1]) + _p[2] + _p[3]*beta)
    return 0;

  if (dEdx > 1 / (_p[4] * beta + _p[5]) + _p[6] + _p[7]*beta)
    return 0;

  return CUTOK;
}