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edc97986 | 1 | #ifndef ALISTRLINE_H |
2 | #define ALISTRLINE_H | |
3 | /* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /////////////////////////////////////////////////////////////////// | |
7 | // // | |
8 | // A straight line is coded as a point (3 Double_t) and // | |
9 | // 3 direction cosines // | |
10 | // // | |
11 | /////////////////////////////////////////////////////////////////// | |
12 | ||
13 | ||
14 | class AliStrLine : public TObject { | |
15 | ||
16 | public: | |
17 | AliStrLine(); // default constructor | |
24a0c65f | 18 | AliStrLine(Double_t *point, Double_t *cd, Bool_t twopoints=kFALSE); // standard constructor |
2c9641ee | 19 | AliStrLine(Float_t *pointf, Float_t *cdf, Bool_t twopoints=kFALSE); |
28dc94e2 | 20 | AliStrLine(Double_t *point, Double_t *sig2point, Double_t *cd, Bool_t twopoints=kFALSE); |
21 | AliStrLine(Float_t *pointf, Float_t *sig2point, Float_t *cdf, Bool_t twopoints=kFALSE); | |
edc97986 | 22 | virtual ~AliStrLine(); // destructor |
23 | void PrintStatus() const; | |
24 | void SetP0(Double_t *point) {for(Int_t i=0;i<3;i++)fP0[i]=point[i];} | |
28dc94e2 | 25 | void SetSigma2P0(Double_t *sigsq) {for(Int_t i=0;i<3;i++)fSigma2P0[i]=sigsq[i];} |
edc97986 | 26 | void SetCd(Double_t *cd) {for(Int_t i=0;i<3;i++)fCd[i]=cd[i];} |
27 | void SetDebug(Int_t dbfl = 0){fDebug = dbfl; } | |
28 | void GetP0(Double_t *point) const {for(Int_t i=0;i<3;i++)point[i]=fP0[i];} | |
28dc94e2 | 29 | void GetSigma2P0(Double_t *sigsq) const {for(Int_t i=0;i<3;i++)sigsq[i]=fSigma2P0[i];} |
edc97986 | 30 | void GetCd(Double_t *cd) const {for(Int_t i=0;i<3;i++)cd[i]=fCd[i];} |
31 | void GetCurrentPoint(Double_t *point) const; | |
32 | Int_t IsParallelTo(AliStrLine *line) const; | |
33 | Int_t Crossrphi(AliStrLine *line); | |
34 | Int_t CrossPoints(AliStrLine *line, Double_t *point1, Double_t *point2); | |
35 | Int_t Cross(AliStrLine *line, Double_t *point); | |
2c9641ee | 36 | Double_t GetDCA(AliStrLine *line) const; |
37 | Double_t GetDistFromPoint(Double_t *point) const; | |
edc97986 | 38 | protected: |
24a0c65f | 39 | void InitDirection(Double_t *point, Double_t *cd); |
40 | void InitTwoPoints(Double_t *pA, Double_t *pB); | |
edc97986 | 41 | Double_t fP0[3]; // given point |
28dc94e2 | 42 | Double_t fSigma2P0[3]; // errors on coordinates of given point |
edc97986 | 43 | Double_t fCd[3]; // direction cosines |
44 | Double_t fTpar; //! parameter | |
45 | Int_t fDebug; //! debug flag - verbose printing if >0 | |
46 | private: | |
47 | void SetPar(Double_t par){fTpar = par;} | |
48 | ||
28dc94e2 | 49 | ClassDef(AliStrLine,2); |
edc97986 | 50 | }; |
51 | ||
52 | #endif |