[u/mrichter/AliRoot.git] / ITS / AliITSSimpleVertex.cxx

/**************************************************************************
 * Copyright(c) 1998-2003, 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 Secondary Vertex class
//           This class contains the Secondary Vertex
//           of a set of tracks
// Origin: F.Prino, Torino, prino@to.infn.it
//-----------------------------------------------------------------

#include "AliITSSimpleVertex.h"


ClassImp(AliITSSimpleVertex)

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

//--------------------------------------------------------------------------
AliITSSimpleVertex::AliITSSimpleVertex(Double_t position[3],Double_t dispersion,
		Int_t nContributors) {


  //
  // Constructor for vertex Z from pixels
  //

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

}


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

}
//--------------------------------------------------------------------------
void AliITSSimpleVertex::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 AliITSSimpleVertex::Print(Option_t* /*option*/) const {
//
// Print out information on all data members
//
  printf("Secondary 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
66e811e2	1	/**************************************************************************
	2	* Copyright(c) 1998-2003, 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 Secondary Vertex class
	18	// This class contains the Secondary Vertex
	19	// of a set of tracks
	20	// Origin: F.Prino, Torino, prino@to.infn.it
	21	//-----------------------------------------------------------------
	22
	23	#include "AliITSSimpleVertex.h"
	24
	25
	26	ClassImp(AliITSSimpleVertex)
	27
	28	//--------------------------------------------------------------------------
	29	AliITSSimpleVertex::AliITSSimpleVertex() {
	30	//
	31	// Default Constructor, set everything to 0
	32	//
	33	for(Int_t k=0;k<3;k++) fPosition[k] = 0;
	34	fSigma = 0;
	35	fNContributors=0;
	36	}
	37
	38	//--------------------------------------------------------------------------
	39	AliITSSimpleVertex::AliITSSimpleVertex(Double_t position[3],Double_t dispersion,
	40	Int_t nContributors) {
	41
	42
	43	//
	44	// Constructor for vertex Z from pixels
	45	//
	46
	47	for(Int_t k=0;k<3;k++) fPosition[k] = position[k];
	48	fSigma = dispersion;
	49	fNContributors = nContributors;
	50
	51	}
	52
	53
	54	//--------------------------------------------------------------------------
	55	AliITSSimpleVertex::~AliITSSimpleVertex() {
	56	//
	57	// Default Destructor
	58	//
	59
	60	}
	61	//--------------------------------------------------------------------------
	62	void AliITSSimpleVertex::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 AliITSSimpleVertex::Print(Option_t* /option/) const {
74	//
75	// Print out information on all data members
76	//
77	printf("Secondary 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