Developer Documentation
GLTrackball.hh
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50 
51 //=============================================================================
52 //
53 // CLASS GLTrackball
54 //
55 //=============================================================================
56 
57 
58 #ifndef ACG_GLTRACKBALL_HH
59 #define ACG_GLTRACKBALL_HH
60 
61 
62 //== INCLUDES =================================================================
63 
64 
65 #include "GLState.hh"
66 #include "../Math/VectorT.hh"
67 
68 
69 //== NAMESPACES ===============================================================
70 
71 
72 namespace ACG {
73 
74 
75 //== CLASS DEFINITION =========================================================
76 
77 
78 
79 class ACGDLLEXPORT GLTrackball
80 {
81 public:
82 
83  GLTrackball(GLState& _state);
84  ~GLTrackball() {}
85 
86  void set_center(const Vec3f& _center) { center_ = _center; }
87 
88  void mouse_press(int button, int x, int y);
89  void mouse_move(int x, int y);
90  void mouse_release(int button, int x, int y);
91 
92 
93 private:
94 
95  void rotation(int x, int y);
96  void translation(int x, int y);
97  void zoom(int x, int y);
98 
99  bool map_to_sphere(const Vec2i& _point, Vec3f& _result);
100 
101 
102  GLState& glstate_;
103  ACG::Vec3d center_;
104 
105  Vec2i last_point_2D_;
106  Vec3f last_point_3D_;
107  bool last_point_ok_;
108 
109  enum { ROTATION, TRANSLATION, ZOOM } action_;
110  bool button_down_[10];
111 };
112 
113 
114 //=============================================================================
115 } // namespace ACG
116 //=============================================================================
117 #endif // ACG_GLTRACKBALL_HH defined
118 //=============================================================================
119 
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51