[u/mrichter/AliRoot.git] / STEER / ESD / AliESDTrdTracklet.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/

///////////////////////////////////////////////////////////////////////////////
//
// ESD format for TRD tracklet from FEE used for triggering
//
// Author: Jochen Klein <jochen.klein@cern.ch>
//
///////////////////////////////////////////////////////////////////////////////

#include "AliESDTrdTracklet.h"

ClassImp(AliESDTrdTracklet)

const Float_t AliESDTrdTracklet::fgkBinWidthY   = 160e-4; // 160 um
const Float_t AliESDTrdTracklet::fgkBinWidthDy  = 140e-4; // 140 um
const Float_t AliESDTrdTracklet::fgkX0          = 2.21;
const Float_t AliESDTrdTracklet::fgkDriftLength = 3.;

AliESDTrdTracklet::AliESDTrdTracklet() :
  TObject(),
  fHCId(-1),
  fTrackletWord(0),
  fLabel(-1)
{
  // default ctor

}

AliESDTrdTracklet::AliESDTrdTracklet(UInt_t trackletWord, Short_t hcid, Int_t label) :
  TObject(),
  fHCId(hcid),
  fTrackletWord(trackletWord),
  fLabel(label)
{
  // ctor with given tracklet word (and label)
}

AliESDTrdTracklet::~AliESDTrdTracklet()
{
  // dtor
}

AliESDTrdTracklet::AliESDTrdTracklet(const AliESDTrdTracklet &trkl) :
  TObject(trkl),
  fHCId(trkl.fHCId),
  fTrackletWord(trkl.fTrackletWord),
  fLabel(trkl.fLabel)
{
  // copy ctor

}

AliESDTrdTracklet& AliESDTrdTracklet::operator=(const AliESDTrdTracklet &trkl)
{
  // assignment operator

  if (this == &trkl)
    return *this;

  TObject::operator=(trkl);
  fHCId = trkl.fHCId;
  fTrackletWord = trkl.fTrackletWord;
  fLabel = trkl.fLabel;

  return *this;
}

Int_t AliESDTrdTracklet::GetBinY() const
{
  // returns (signed) value of Y

  if (fTrackletWord & 0x1000) {
    return -((~(fTrackletWord-1)) & 0x1fff);
  }
  else {
    return (fTrackletWord & 0x1fff);
  }
}

Int_t AliESDTrdTracklet::GetBinDy() const
{
  // returns (signed) value of the deflection length

  if (fTrackletWord & (1 << 19)) {
    return -((~((fTrackletWord >> 13) - 1)) & 0x7f);
  }
  else {
    return ((fTrackletWord >> 13) & 0x7f);
  }
}

Float_t AliESDTrdTracklet::GetDyDx() const
{
  // returns the deflection over 3 cm drift length

  return GetBinDy() * fgkBinWidthDy/fgkDriftLength;
}
Commit	Line	Data
52cd0cc0	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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	//
	18	// ESD format for TRD tracklet from FEE used for triggering
	19	//
	20	// Author: Jochen Klein <jochen.klein@cern.ch>
	21	//
	22	///////////////////////////////////////////////////////////////////////////////
	23
	24	#include "AliESDTrdTracklet.h"
	25
	26	ClassImp(AliESDTrdTracklet)
	27
	28	const Float_t AliESDTrdTracklet::fgkBinWidthY = 160e-4; // 160 um
	29	const Float_t AliESDTrdTracklet::fgkBinWidthDy = 140e-4; // 140 um
	30	const Float_t AliESDTrdTracklet::fgkX0 = 2.21;
	31	const Float_t AliESDTrdTracklet::fgkDriftLength = 3.;
	32
	33	AliESDTrdTracklet::AliESDTrdTracklet() :
	34	TObject(),
	35	fHCId(-1),
	36	fTrackletWord(0),
	37	fLabel(-1)
	38	{
	39	// default ctor
	40
	41	}
	42
	43	AliESDTrdTracklet::AliESDTrdTracklet(UInt_t trackletWord, Short_t hcid, Int_t label) :
	44	TObject(),
	45	fHCId(hcid),
	46	fTrackletWord(trackletWord),
	47	fLabel(label)
	48	{
	49	// ctor with given tracklet word (and label)
	50	}
	51
	52	AliESDTrdTracklet::~AliESDTrdTracklet()
	53	{
	54	// dtor
	55	}
	56
	57	AliESDTrdTracklet::AliESDTrdTracklet(const AliESDTrdTracklet &trkl) :
	58	TObject(trkl),
	59	fHCId(trkl.fHCId),
	60	fTrackletWord(trkl.fTrackletWord),
	61	fLabel(trkl.fLabel)
	62	{
	63	// copy ctor
	64
65	}
66
67	AliESDTrdTracklet& AliESDTrdTracklet::operator=(const AliESDTrdTracklet &trkl)
68	{
69	// assignment operator
70
71	if (this == &trkl)
72	return *this;
73
74	TObject::operator=(trkl);
75	fHCId = trkl.fHCId;
76	fTrackletWord = trkl.fTrackletWord;
77	fLabel = trkl.fLabel;
78
79	return *this;
80	}
81
82	Int_t AliESDTrdTracklet::GetBinY() const
83	{
84	// returns (signed) value of Y
85
86	if (fTrackletWord & 0x1000) {
87	return -((~(fTrackletWord-1)) & 0x1fff);
88	}
89	else {
90	return (fTrackletWord & 0x1fff);
91	}
92	}
93
94	Int_t AliESDTrdTracklet::GetBinDy() const
95	{
96	// returns (signed) value of the deflection length
97
98	if (fTrackletWord & (1 << 19)) {
99	return -((~((fTrackletWord >> 13) - 1)) & 0x7f);
100	}
101	else {
102	return ((fTrackletWord >> 13) & 0x7f);
103	}
104	}
105
106	Float_t AliESDTrdTracklet::GetDyDx() const
107	{
108	// returns the deflection over 3 cm drift length
109
110	return GetBinDy() * fgkBinWidthDy/fgkDriftLength;
111	}