message: functionality added to GMPhysicalTrackModel
diff: @@ -82,6 +82,8 @@ class AliHLTTPCGMPhysicalTrackModel
  GPUd() void Print() const;
  + GPUd() float GetMirroredY( float Bz ) const ;
  +
  private:
  // physical parameters of the trajectory
  @@ -167,4 +169,11 @@ GPUd() inline void AliHLTTPCGMPhysicalTrackModel::UpdateValues()
  fQPt = fQ*pti;
  }
  +GPUd() inline float AliHLTTPCGMPhysicalTrackModel::GetMirroredY( float Bz ) const
  +{
  + // get Y of the point which has the same X, but located on the other side of trajectory
  + if( fabs(Bz)<1.e-8 ) Bz = 1.e-8;
  + return fY - 2.f*fQ*fPx/Bz;
  +}
  +
  #endif
  