ForVrtClose.h

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef _TrkVKalVrtCore_ForVrtClose_H
#define _TrkVKalVrtCore_ForVrtClose_H
 
#include "TrkVKalVrtCore/CommonPars.h"
 
namespace Trk {
 
//
// Structure needed for "passing near other vertex" constraint
//  Vertex+cov.matrix+Charge themselves are also here
//   (previously were in ForCFT structure!!!)
//
//  Constraint usage is controlled by "passNearVertex" and "passWithTrkCov" flags
//          in VKVertex object itself.
//--------------------------------------------------------------------------------
 
  struct ForVrtClose{
    long int Charge;          // Charge of summary track for propagation
    double vrt[3], covvrt[6];
    double dcovf[21];         // XYZPxPyPz covariance matrix
                              // for constraint calculation.
                  // Its dependance on vertex position is small,
                  // so it is calculated on previous iteration and
                  // not touched during PostFit
    double ywgt[3], rv0[2];
    double cvder[12];                 /* was [2][6] */
    double dcv[6*(vkalNTrkM*3+3)];    /* was [6][903] */
 
    ForVrtClose(){
      Charge=0;  vrt[0]=vrt[1]=vrt[2]=0.;
      for(int i=0; i<2*6; i++)cvder[i]=0.;
      for(int i=0; i<21;  i++)dcovf[i]=0.;
      dcovf[0]=dcovf[2]=dcovf[5]=dcovf[9]=dcovf[14]=dcovf[20]=10.;
    };
  };
 
}
 
#endif