RhoVector3Err.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

#ifndef RHOVECTORERR_H
#define RHOVECTORERR_H
//                                                                      //
// RhoVectorErr                                                         //
//                                                                      //
// Vector w/ error class                                                //
//                                                                      //
// Author: Marcel Kunze, RUB, Nov. 99                                   //
// Copyright (C) 1999-2001, Ruhr-University Bochum.                     //
// Ralf Kliemt, HIM/GSI Feb.2013 (Cleanup & Restructuring)              //
//                                                                      //

#include <iostream>

#include "RhoError.h"
#include "TRotation.h"

class RhoVector3Err : public TVector3 {

 public:
  // polar coordinates
  enum PolarCoordinateIndex { Rho = 0, Theta = 1, Phi = 2, NUM_PCOORDINATES = 3 };

  enum CylindricalCoordinateIndex { C_Rho = 0, C_Zeta = 1, C_Phi = 2, NUM_CCOORDINATES = 3 };
  // argumentless constructor:
  RhoVector3Err();

  // auto casting constructor
  RhoVector3Err(const TVector3 &p);
  RhoVector3Err(const TVector3 &p, const RhoError &covMat);

  // copy constructor:
  RhoVector3Err(const RhoVector3Err &v);

  // destructor MAY be needed later
  virtual ~RhoVector3Err(){};

  // assignment operator:
  RhoVector3Err &operator=(const RhoVector3Err &v);

  RhoVector3Err &operator-();

  RhoVector3Err &operator+=(const RhoVector3Err &v);

  RhoVector3Err &operator-=(const RhoVector3Err &v);

  RhoVector3Err &Transform(const TRotation &rot);

  Double_t DetermineChisq(const TVector3 &refVector);
  // returns Chisquare
  // refVector refers to the same origin as the TVector3 of this
  // ie refVector is not relative to this Vector

  inline const RhoError &CovMatrix() const { return fCovMatrix; }

  // TError CovRTPMatrix() const;
  // returns the covariance Matrix in spherical coordinate
  // use   PolarCoordinateIndex enum to get the components

  // TError CovRZPMatrix() const;
  // returns the covariance Matrix in cylindrical coordinate
  // use   CylindricalCoordinateIndex enum to get the components

  inline void SetCovMatrix(const RhoError &v) { fCovMatrix = v; }

  //  void printOn( std::ostream& o=std::cout ) const;

 private:
  RhoError fCovMatrix; 

 public:
  ClassDef(RhoVector3Err, 1) // Add errors to a vector
};

RhoVector3Err operator+(const RhoVector3Err &, const RhoVector3Err &);

RhoVector3Err operator-(const RhoVector3Err &, const RhoVector3Err &);

std::ostream &operator<<(std::ostream &stream, const RhoVector3Err &verr);
std::istream &operator>>(std::istream &stream, RhoVector3Err &verr);

#endif