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1 | #ifndef ALI3VECTOR_H | |
2 | #define ALI3VECTOR_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | // $Id$ | |
7 | ||
8 | #include <math.h> | |
9 | ||
10 | #include "TObject.h" | |
11 | #include "TString.h" | |
12 | #include "TRotMatrix.h" | |
13 | ||
14 | class Ali3Vector | |
15 | { | |
16 | public: | |
17 | Ali3Vector(); // Default constructor | |
18 | virtual ~Ali3Vector(); // Destructor | |
19 | Ali3Vector(const Ali3Vector& v); // Copy constructor | |
20 | virtual void Load(Ali3Vector& q); // Load all attributes of input Ali3Vector | |
21 | virtual void SetZero(); // (Re)set all attributes to zero. | |
22 | void SetVector(Double_t* v,TString f,TString u="rad"); // Store vector v in frame f with ang units u | |
23 | void GetVector(Double_t* v,TString f,TString u="rad") const; // Provide vector v in frame f in ang units u | |
24 | void SetVector(Float_t* v,TString f,TString u="rad"); // Store vector v in frame f with ang units u | |
25 | void GetVector(Float_t* v,TString f,TString u="rad") const; // Provide vector v in frame f in ang units u | |
26 | void SetErrors(Double_t* e,TString f,TString u="rad"); // Store errors of vector in frame f with ang units u | |
27 | void GetErrors(Double_t* e,TString f,TString u="rad") const; // Provide errors of vector in frame f in ang units u | |
28 | void SetErrors(Float_t* e,TString f,TString u="rad"); // Store errors of vector in frame f with ang units u | |
29 | void GetErrors(Float_t* e,TString f,TString u="rad") const; // Provide errors of vector in frame f in ang units u | |
30 | virtual void Data(TString f="car",TString u="rad") const; // Print vector components in frame f in ang units u | |
31 | Double_t GetNorm(); // Provide norm of the vector | |
32 | Double_t Dot(Ali3Vector& q); // Provide dot product with q | |
33 | Double_t GetPseudoRapidity(); // Provide the pseudorapidity w.r.t z-axis | |
34 | Double_t GetResultError() const; // Provide error on scalar result (e.g. norm) | |
35 | Ali3Vector Cross(Ali3Vector& q) const; // Provide cross product with q | |
36 | Ali3Vector operator+(Ali3Vector& q) const; // Add vector q | |
37 | Ali3Vector operator-(Ali3Vector& q) const; // Subtract vector q | |
38 | Ali3Vector operator*(Double_t s) const; // Multiply vector with scalar s | |
39 | Ali3Vector operator/(Double_t s) const; // Divide vector by scalar s | |
40 | Ali3Vector& operator+=(Ali3Vector& q); // Add vector q | |
41 | Ali3Vector& operator-=(Ali3Vector& q); // Subtract vector q | |
42 | Ali3Vector& operator*=(Double_t s); // Multiply with scalar s | |
43 | Ali3Vector& operator/=(Double_t s); // Divide by scalar s | |
44 | Ali3Vector GetVecTrans() const; // Provide transverse vector w.r.t. z-axis | |
45 | Ali3Vector GetVecLong() const; // Provide longitudinal vector w.r.t. z-axis | |
46 | Ali3Vector GetPrimed(TRotMatrix* m) const; // Provide vector components in a rotated frame | |
47 | Ali3Vector GetUnprimed(TRotMatrix* m) const; // Provide original vector components from a rotated one | |
48 | Double_t GetX(Int_t i,TString f,TString u="rad"); // Provide i-th vector component in frame f in units u | |
49 | virtual Double_t GetOpeningAngle(Ali3Vector& q,TString u="rad"); // Provide opening angle with q in units u | |
50 | ||
51 | protected: | |
52 | Double_t fV,fTheta,fPhi; // Vector in spherical coordinates | |
53 | Double_t fDx,fDy,fDz; // Errors on Cartesian coordinates | |
54 | Double_t fDresult; // Error on scalar result (e.g. norm or dotproduct) | |
55 | ||
56 | ClassDef(Ali3Vector,10) // Handling of 3-vectors in various reference frames. | |
57 | }; | |
58 | #endif |