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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 | $Log$ |
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18 | Revision 1.2 1999/09/29 09:24:28 fca |
| 19 | Introduction of the Copyright and cvs Log |
| 20 | |
| 4c039060 |
21 | */ |
| 22 | |
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23 | /////////////////////////////////////////////////////////////////////////// |
| 24 | // Class AliPosition |
| 25 | // Handling of positions in various reference frames. |
| 26 | // |
| 27 | // This class is meant to serve as a base class for ALICE objects |
| 28 | // that have a unique position in 3-dimensional space. |
| 29 | // |
| 30 | // Note : |
| 31 | // ------ |
| 32 | // Positions (r), errors (e) and reference frames (f) are specified via |
| 33 | // |
| 34 | // SetPosition(Float_t* r,TString f) |
| 35 | // SetPositionErrors(Float_t* e,TString f) |
| 36 | // |
| 37 | // under the following conventions : |
| 38 | // |
| 39 | // f="car" ==> r in Cartesian coordinates (x,y,z) |
| 40 | // f="sph" ==> r in Spherical coordinates (r,theta,phi) |
| 41 | // f="cyl" ==> r in Cylindrical coordinates (rho,phi,z) |
| 42 | // |
| 43 | // All angles are in radians. |
| 44 | // |
| 45 | // Example : |
| 46 | // --------- |
| 47 | // |
| 48 | // AliPosition q; |
| 49 | // Float_t pos[3]={-1,25,7}; |
| 50 | // Float_t err[3]={0.08,1.85,0.5}; |
| 51 | // q.SetPosition(pos,"car"); |
| 52 | // q.SetPositionErrors(pos,"car"); |
| 53 | // Float_t loc[3],dloc[3]; |
| 54 | // q.GetPosition(loc,"sph"); |
| 55 | // q.GetPositionErrors(dloc,"sph"); |
| 56 | // |
| 57 | //--- Author: Nick van Eijndhoven 06-feb-1999 UU-SAP Utrecht |
| 58 | /////////////////////////////////////////////////////////////////////////// |
| 59 | |
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60 | #include "AliPosition.h" |
| 61 | |
| 62 | ClassImp(AliPosition) // Class implementation to enable ROOT I/O |
| 63 | |
| 64 | AliPosition::AliPosition() |
| 65 | { |
| 66 | // Creation of an AliPosition object and initialisation of parameters |
| 67 | } |
| 68 | /////////////////////////////////////////////////////////////////////////// |
| 69 | AliPosition::~AliPosition() |
| 70 | { |
| 71 | // Destructor to delete dynamically allocated memory |
| 72 | } |
| 73 | /////////////////////////////////////////////////////////////////////////// |
| 74 | void AliPosition::SetPosition(Double_t* r,TString f) |
| 75 | { |
| 76 | // Store position according to reference frame f |
| 77 | SetVector(r,f); |
| 78 | } |
| 79 | /////////////////////////////////////////////////////////////////////////// |
| 80 | void AliPosition::GetPosition(Double_t* r,TString f) |
| 81 | { |
| 82 | // Provide position according to reference frame f |
| 83 | GetVector(r,f); |
| 84 | } |
| 85 | /////////////////////////////////////////////////////////////////////////// |
| 86 | void AliPosition::SetPosition(Float_t* r,TString f) |
| 87 | { |
| 88 | // Store position according to reference frame f |
| 89 | SetVector(r,f); |
| 90 | } |
| 91 | /////////////////////////////////////////////////////////////////////////// |
| 92 | void AliPosition::GetPosition(Float_t* r,TString f) |
| 93 | { |
| 94 | // Provide position according to reference frame f |
| 95 | GetVector(r,f); |
| 96 | } |
| 97 | /////////////////////////////////////////////////////////////////////////// |
| 98 | AliPosition& AliPosition::GetPosition() |
| 99 | { |
| 100 | // Provide position |
| 101 | return (*this); |
| 102 | } |
| 103 | /////////////////////////////////////////////////////////////////////////// |
| 104 | void AliPosition::SetPosition(Ali3Vector& r) |
| 105 | { |
| 106 | // Set position |
| 107 | Double_t a[3]; |
| 108 | r.GetVector(a,"sph"); |
| 109 | SetVector(a,"sph"); |
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110 | r.GetErrors(a,"car"); |
| 111 | SetErrors(a,"car"); |
| 112 | } |
| 113 | /////////////////////////////////////////////////////////////////////////// |
| 114 | void AliPosition::SetPositionErrors(Double_t* r,TString f) |
| 115 | { |
| 116 | // Store position errors according to reference frame f |
| 117 | SetErrors(r,f); |
| 118 | } |
| 119 | /////////////////////////////////////////////////////////////////////////// |
| 120 | void AliPosition::GetPositionErrors(Double_t* r,TString f) |
| 121 | { |
| 122 | // Provide position errors according to reference frame f |
| 123 | GetErrors(r,f); |
| 124 | } |
| 125 | /////////////////////////////////////////////////////////////////////////// |
| 126 | void AliPosition::SetPositionErrors(Float_t* r,TString f) |
| 127 | { |
| 128 | // Store position errors according to reference frame f |
| 129 | SetErrors(r,f); |
| 130 | } |
| 131 | /////////////////////////////////////////////////////////////////////////// |
| 132 | void AliPosition::GetPositionErrors(Float_t* r,TString f) |
| 133 | { |
| 134 | // Provide position errors according to reference frame f |
| 135 | GetErrors(r,f); |
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136 | } |
| 137 | /////////////////////////////////////////////////////////////////////////// |
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