[u/mrichter/AliRoot.git] / STEER / AliVertex.cxx

/**************************************************************************
 * Copyright(c) 2006-2008, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//-----------------------------------------------------------------
//           Implementation of the base Vertex class
//           This class contains the Secondary Vertex
//           of a set of tracks
//           And it is the base class for primary vertices
// Origin: F.Prino, Torino, prino@to.infn.it
//-----------------------------------------------------------------

#include "AliVertex.h"


ClassImp(AliVertex)

//--------------------------------------------------------------------------
AliVertex::AliVertex() : TNamed() {
//
// Default Constructor, set everything to 0
//
  for(Int_t k=0;k<3;k++) fPosition[k]   = 0;
  fSigma = 0;
  fNContributors=0;
}

//--------------------------------------------------------------------------
AliVertex::AliVertex(Double_t position[3],Double_t dispersion,
		Int_t nContributors): TNamed() {
  //
  // Standard Constructor
  //

  for(Int_t k=0;k<3;k++) fPosition[k]   = position[k];
  fSigma         = dispersion;
  fNContributors = nContributors;
  SetName("BaseVertex");

}


//--------------------------------------------------------------------------
AliVertex::~AliVertex() {
//  
// Default Destructor
//

}
//--------------------------------------------------------------------------
void AliVertex::GetXYZ(Double_t position[3]) const {
//
// Return position of the vertex in global frame
//
  position[0] = fPosition[0];
  position[1] = fPosition[1];
  position[2] = fPosition[2];

  return;
}
//--------------------------------------------------------------------------
void AliVertex::Print(Option_t* /*option*/) const {
//
// Print out information on all data members
//
  printf("Vertex position:\n");
  printf("   x = %f\n",fPosition[0]);
  printf("   y = %f\n",fPosition[1]);
  printf("   z = %f\n",fPosition[2]);
  printf(" Dispersion = %f\n",fSigma);
  printf(" # tracks = %d\n",fNContributors);

  return;
}
Commit	Line	Data
8a553be2	1	/**************************************************************************
	2	* Copyright(c) 2006-2008, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	//-----------------------------------------------------------------
	17	// Implementation of the base Vertex class
	18	// This class contains the Secondary Vertex
	19	// of a set of tracks
	20	// And it is the base class for primary vertices
	21	// Origin: F.Prino, Torino, prino@to.infn.it
	22	//-----------------------------------------------------------------
	23
	24	#include "AliVertex.h"
	25
	26
	27	ClassImp(AliVertex)
	28
	29	//--------------------------------------------------------------------------
	30	AliVertex::AliVertex() : TNamed() {
	31	//
	32	// Default Constructor, set everything to 0
	33	//
	34	for(Int_t k=0;k<3;k++) fPosition[k] = 0;
	35	fSigma = 0;
	36	fNContributors=0;
	37	}
	38
	39	//--------------------------------------------------------------------------
	40	AliVertex::AliVertex(Double_t position[3],Double_t dispersion,
	41	Int_t nContributors): TNamed() {
	42	//
	43	// Standard Constructor
	44	//
	45
	46	for(Int_t k=0;k<3;k++) fPosition[k] = position[k];
	47	fSigma = dispersion;
	48	fNContributors = nContributors;
	49	SetName("BaseVertex");
	50
	51	}
	52
	53
	54	//--------------------------------------------------------------------------
	55	AliVertex::~AliVertex() {
	56	//
	57	// Default Destructor
	58	//
	59
	60	}
	61	//--------------------------------------------------------------------------
	62	void AliVertex::GetXYZ(Double_t position[3]) const {
	63	//
	64	// Return position of the vertex in global frame
65	//
66	position[0] = fPosition[0];
67	position[1] = fPosition[1];
68	position[2] = fPosition[2];
69
70	return;
71	}
72	//--------------------------------------------------------------------------
73	void AliVertex::Print(Option_t* /option/) const {
74	//
75	// Print out information on all data members
76	//
77	printf("Vertex position:\n");
78	printf(" x = %f\n",fPosition[0]);
79	printf(" y = %f\n",fPosition[1]);
80	printf(" z = %f\n",fPosition[2]);
81	printf(" Dispersion = %f\n",fSigma);
82	printf(" # tracks = %d\n",fNContributors);
83
84	return;
85	}
86
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89