source: Sophya/trunk/SophyaLib/Samba/circle.h@ 1778

Last change on this file since 1778 was 1770, checked in by lemeur, 24 years ago

mises a jour pour ELDESTINO
File size: 3.0 KB
Line 
1// Geometry handling class
2// R. Ansari , G. Le Meur 2000
3// DAPNIA/SPP (Saclay) / CEA LAL - IN2P3/CNRS (Orsay)
4
5#ifndef CIRCLE_H_SEEN
6#define CIRCLE_H_SEEN
7
8#include <math.h>
9#include <iostream.h>
10#include "vector3d.h"
11#include "unitvector.h"
12#include "utilgeom.h"
13#include "geometry.h"
14
15namespace SOPHYA {
16
17class Circle : public Geometry
18{
19
20 public:
21
22 Circle();
23 Circle(double theta, double phi, double aperture);
24 Circle(double x, double y, double z, double aperture);
25 Circle(const Vector3d& v, double aperture=M_PI/2.);
26 Circle(const Circle& c);
27 virtual ~Circle() {}
28
29 void SetCircle(const UnitVector&, double);
30 void SetSpinAxis(double theta, double phi);
31 void SetSpinAxis(const Vector3d&);
32 void SetSpinAxis(double x, double y, double z);
33 void SetApertureAngle(double aperture);
34 void SetApertureAngle(const Circle&);
35
36 // psi contient les 4 valeurs des angles d intersection. -1 si les cercles ne se coupent pas
37 // voir la numerotation dans le .cc
38 /* psi contains 4 values of the intersection angles.
39 -1 if circles do not intersect
40 psi[0]=psi(i,j,0)
41 psi[1]=psi(i,j,1)
42 psi[2]=psi(j,i,0)
43 psi[3]=psi(j,i,1)
44 */
45
46 bool Intersection(const Circle&, double*) const;
47 bool Intersection(const Circle&) const;
48
49 // donne le UnitVector correspondant a une position donnee sur le cercle
50 /*! Return UnitVector corresponding to a given position donnee on the circle
51 */
52 UnitVector ConvToSphere(double psi) const;
53
54 // donne le UnitVector correspondant la tangente au cercle en une position donnee sur le cercle
55 /*! Return UnitVector corresponding to the tangent to the circle */
56// at given position on the circle.
57 UnitVector TanOnCircle(double psi) const;
58
59 // donne le vecteur tangent dans le plan (xy) a la sphere en une position donnee sur le cercle
60 /*! Return the vector tangent to the sphere in the plane (xy)
61 at a given position on the circle.
62 */
63 UnitVector EPhi(double psi) const;
64
65 // donne l autre vecteur tangent (orthogonal a EPhi)
66 /*! Return the other tangent vector( orthogonal to EPhi)--
67 see previous method
68 */
69 UnitVector ETheta(double psi) const;
70
71 // donne l angle de separation dans [0,2Pi] en une position donnee sur le cercle et EPhi
72 /*! Return separation angle in [0,2Pi] at a given position on the
73 circle and EPhi
74 */
75 double SepAngleTanEPhi02PI(double psi) const;
76
77 double Theta() const {return _spinaxis.Theta();}
78 double Phi() const {return _spinaxis.Phi();}
79 double ApertureAngle() const {return _angouv;}
80 Vector3d Omega() const {return _spinaxis;}
81 virtual void Print(ostream&) const;
82 Circle& operator=(const Circle&);
83 bool operator==(const Circle&) const;
84 bool operator!=(const Circle&) const;
85
86 private:
87
88 Vector3d _spinaxis;
89 UnitVector _spinunitaxis;
90 double _angouv;
91 double _theta,_phi;
92 double _x,_y,_z;
93
94 double _cangouv;
95 double _sangouv;
96 double _ctheta;
97 double _stheta;
98 double _cphi;
99 double _sphi;
100};
101
102inline ostream& operator<<(ostream& s, const Circle& c)
103{
104 c.Print(s);
105 return s;
106}
107
108} // namespace SOPHYA
109
110#endif
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