/data/refman/pasoursint/CMSSW_4_1_8_patch12/src/RecoLocalMuon/DTSegment/src/DTSegmentExtendedCand.cc

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/******* \class DTSegmentExtendedCand *******
 *
 * Description:
 *  
 *  detailed description
 *
 * \author : Stefano Lacaprara - INFN LNL <stefano.lacaprara@pd.infn.it>
 * $date   : 15/05/2008 17:50:32 CEST $
 *
 * Modification:
 *
 *********************************/

/* This Class Header */
#include "RecoLocalMuon/DTSegment/src/DTSegmentExtendedCand.h"

/* Collaborating Class Header */

/* C++ Headers */
#include <iostream>
using namespace std;

/* ====================================================================== */

/* Constructor */ 

/* Destructor */ 

/* Operations */ 
bool DTSegmentExtendedCand::isCompatible(const DTSegmentExtendedCand::DTSLRecClusterForFit& clus) {
  LocalPoint posAtSL =
    position()+direction()*(clus.pos.z()-position().z())/cos(direction().theta());
  // cout << "pos :" << clus.pos << " posAtSL " << posAtSL << endl;
  static float errScaleFact=10.;
  static float minError=25.; // (cm)
  // cout << "clus.err.xx() " << clus.err << endl;
  return fabs((posAtSL-clus.pos).x())<max(errScaleFact*sqrt(clus.err.xx()), minError);
}

unsigned int DTSegmentExtendedCand::nHits() const {
  return DTSegmentCand::nHits()+theClus.size();
}

bool DTSegmentExtendedCand::good() const {
  if (superLayer()->id().superLayer()==2) 
     return DTSegmentCand::nHits()>=nHitsMin && chi2()/NDOF() < chi2max*2.;
  return DTSegmentCand::nHits()>=nHitsMin && chi2()/NDOF() < chi2max ;
}