Adding straight line extrapolation to AliExternalTrackParam (M.Masera)
[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
18 AliStrLine(Double_t *point, Double_t *cd); // standard constructor
19 virtual ~AliStrLine(); // destructor
20 void PrintStatus() const;
21 void SetP0(Double_t *point) {for(Int_t i=0;i<3;i++)fP0[i]=point[i];}
22 void SetCd(Double_t *cd) {for(Int_t i=0;i<3;i++)fCd[i]=cd[i];}
23 void SetDebug(Int_t dbfl = 0){fDebug = dbfl; }
24 void GetP0(Double_t *point) const {for(Int_t i=0;i<3;i++)point[i]=fP0[i];}
25 void GetCd(Double_t *cd) const {for(Int_t i=0;i<3;i++)cd[i]=fCd[i];}
26 void GetCurrentPoint(Double_t *point) const;
27 Int_t IsParallelTo(AliStrLine *line) const;
28 Int_t Crossrphi(AliStrLine *line);
29 Int_t CrossPoints(AliStrLine *line, Double_t *point1, Double_t *point2);
30 Int_t Cross(AliStrLine *line, Double_t *point);
31 Double_t GetDCA(AliStrLine *line);
32 protected:
33 Double_t fP0[3]; // given point
34 Double_t fCd[3]; // direction cosines
35 Double_t fTpar; //! parameter
36 Int_t fDebug; //! debug flag - verbose printing if >0
37 private:
38 void SetPar(Double_t par){fTpar = par;}
39
40 ClassDef(AliStrLine,1);
41};
42
43#endif