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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 | |
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16 | // $Id$ |
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17 | |
| 18 | /////////////////////////////////////////////////////////////////////////// |
| 19 | // Class AliPositionObj |
| 20 | // Handling of positions in various reference frames. |
| 21 | // |
| 22 | // This class is meant to provide an AliPosition object which is derived |
| 23 | // from TObject such that it can be stored in e.g. TObjArray etc... |
| 24 | // and that it can be written out using the ROOT I/O machinery. |
| 25 | // |
| 26 | // Example : |
| 27 | // ========= |
| 28 | // |
| 29 | // Float_t a[3]={1,2,3}; |
| 30 | // Float_t ea[3]={0.01,0.02,0.03}; |
| 31 | // Float_t b[3]={4,5,6}; |
| 32 | // Float_t eb[3]={0.04,0.05,0.06}; |
| 33 | // |
| 34 | // AliPosition r1,r2; |
| 35 | // |
| 36 | // r1.SetPosition(a,"car"); |
| 37 | // r1.SetPositionErrors(ea,"car"); |
| 38 | // r2.SetPosition(b,"car"); |
| 39 | // r2.SetPositionErrors(eb,"car"); |
| 40 | // |
| 41 | // Ali3Vector sum=r1+r2; |
| 42 | // Ali3Vector rel=r1-r2; |
| 43 | // |
| 44 | // AliPositionObj rr1(r1); |
| 45 | // AliPositionObj rr2; |
| 46 | // rr2.Load(r2); |
| 47 | // AliPositionObj ssum(r1+r2); |
| 48 | // |
| 49 | // rr1.Info(); |
| 50 | // rr2.Info(); |
| 51 | // ssum.Info(); |
| 52 | // |
| 53 | //--- Author: Nick van Eijndhoven 18-oct-1999 UU-SAP Utrecht |
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54 | //- Modified: NvE $Date$ UU-SAP Utrecht |
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55 | /////////////////////////////////////////////////////////////////////////// |
| 56 | |
| 57 | #include "AliPositionObj.h" |
| 58 | |
| 59 | ClassImp(AliPositionObj) // Class implementation to enable ROOT I/O |
| 60 | |
| 61 | AliPositionObj::AliPositionObj() |
| 62 | { |
| 63 | // Creation of an AliPositionObj object and initialisation of parameters. |
| 64 | // All attributes initialised to 0. |
| 65 | } |
| 66 | /////////////////////////////////////////////////////////////////////////// |
| 67 | AliPositionObj::AliPositionObj(Ali3Vector& q) |
| 68 | { |
| 69 | // Creation of an AliPositionObj object and initialisation of parameters. |
| 70 | // All attributes are initialised to the values of the input Ali3Vector. |
| 71 | Load(q); |
| 72 | } |
| 73 | /////////////////////////////////////////////////////////////////////////// |
| 74 | AliPositionObj::~AliPositionObj() |
| 75 | { |
| 76 | // Destructor to delete dynamically allocated memory. |
| 77 | } |
| 78 | /////////////////////////////////////////////////////////////////////////// |
| 79 | void AliPositionObj::Load(Ali3Vector& q) |
| 80 | { |
| 81 | // Load all attributes of the input Ali3Vector into this AliPositionObj object. |
| 82 | Double_t temp=q.GetResultError(); |
| 83 | Double_t a[3]; |
| 84 | q.GetVector(a,"sph"); |
| 85 | SetPosition(a,"sph"); |
| 86 | q.GetErrors(a,"car"); |
| 87 | SetPositionErrors(a,"car"); |
| 88 | fDresult=temp; |
| 89 | } |
| 90 | /////////////////////////////////////////////////////////////////////////// |
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