Adding the femtoscopy package in the PWG2 compilation
[u/mrichter/AliRoot.git] / STEER / AliStrLine.h
CommitLineData
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
14class 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