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d88f97cc | 1 | #ifndef ALI4VECTOR_H |
2 | #define ALI4VECTOR_H | |
3da30618 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
f531a546 | 6 | // $Id$ |
3da30618 | 7 | |
d88f97cc | 8 | #include <iostream.h> |
9 | #include <math.h> | |
10 | ||
11 | #include "Ali3Vector.h" | |
12 | ||
13 | class Ali4Vector | |
14 | { | |
15 | public: | |
16 | Ali4Vector(); // Default constructor for contravariant vector | |
17 | virtual ~Ali4Vector(); // Destructor | |
18 | virtual void SetVector(Double_t v0,Ali3Vector v); // Store contravariant vector | |
19 | virtual void SetVector(Double_t* v,TString f); // Store contravariant vector v^i in frame f | |
20 | virtual void GetVector(Double_t* v,TString f); // Provide contravariant vector v^i in frame f | |
21 | virtual void SetVector(Float_t* v,TString f); // Store contravariant vector v^i in frame f | |
22 | virtual void GetVector(Float_t* v,TString f); // Provide contravariant vector v^i in frame f | |
959fbac5 | 23 | virtual void SetScalar(Double_t v0,Double_t dv0=0); // Set the scalar part (with error) of v |
24 | virtual void SetScalarError(Double_t dv0); // Set error on the scalar part of v | |
d88f97cc | 25 | Double_t GetScalar(); // Provide the scalar part of v |
959fbac5 | 26 | virtual void Set3Vector(Ali3Vector v); // Set the 3-vector part of v |
27 | virtual void Set3Vector(Double_t* v,TString f); // Set the 3-vector part of v in frame f | |
28 | virtual void Set3Vector(Float_t* v,TString f); // Set the 3-vector part of v in frame f | |
d88f97cc | 29 | Ali3Vector Get3Vector(); // Provide the 3-vector part of v |
959fbac5 | 30 | virtual void SetInvariant(Double_t v2,Double_t dv2=0); // Set the Lorentz invariant (with error) |
31 | virtual void SetInvariantError(Double_t dv2); // Set error on the Lorentz invariant | |
32 | Double_t GetInvariant(); // Provide the Lorentz invariant | |
33 | virtual void SetErrors(Double_t* v,TString f); // Store errors of vector v^i in frame f | |
34 | virtual void GetErrors(Double_t* v,TString f); // Provide errors of vector v^i in frame f | |
35 | virtual void SetErrors(Float_t* v,TString f); // Store errors of vector v^i in frame f | |
36 | virtual void GetErrors(Float_t* v,TString f); // Provide errors of vector v^i in frame f | |
d88f97cc | 37 | virtual void Info(TString f="car"); // Print contravariant components in frame f |
38 | Double_t Dot(Ali4Vector& q); // Provide dot product v^i*q_i | |
959fbac5 | 39 | Double_t GetResultError(); // Provide error on scalar result (e.g. Dot) |
d88f97cc | 40 | Ali4Vector operator+(Ali4Vector& q); // Add contravariant vector q |
41 | Ali4Vector operator-(Ali4Vector& q); // Subtract contravariant vector q | |
42 | Ali4Vector operator*(Double_t s); // Multiply contravariant vector with scalar s | |
43 | Ali4Vector operator/(Double_t s); // Divide contravariant vector by scalar s | |
44 | Ali4Vector& operator+=(Ali4Vector& q); // Add contravariant vector q | |
45 | Ali4Vector& operator-=(Ali4Vector& q); // Subtract contravariant vector q | |
46 | Ali4Vector& operator*=(Double_t s); // Multiply with scalar s | |
47 | Ali4Vector& operator/=(Double_t s); // Divide by scalar s | |
959fbac5 | 48 | Int_t GetScalarFlag(); // Provide the fScalar flag value |
d88f97cc | 49 | |
50 | protected: | |
959fbac5 | 51 | Double_t fV2; // The Lorentz invariant (v^i*v_i) |
52 | Double_t fV0; // The scalar part | |
53 | Ali3Vector fV; // The 3-vector part | |
54 | Double_t fDv2; // The error on the Lorentz invariant | |
55 | Double_t fDv0; // The error on the scalar part | |
56 | Double_t fDresult; // The error on the scalar result of an operation (e.g. dotproduct) | |
57 | Int_t fScalar; // Flag denoting scalar mode | |
d88f97cc | 58 | |
959fbac5 | 59 | ClassDef(Ali4Vector,1) // Handling of Lorentz 4-vectors in various reference frames. |
d88f97cc | 60 | }; |
61 | #endif |