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TrackballNode.hh
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48 \*===========================================================================*/
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51
52
53 //=============================================================================
54 //
55 // CLASS TrackballNode
56 //
57 //=============================================================================
58
59
60 #ifndef ACG_TRACKBALL_NODE_HH
61 #define ACG_TRACKBALL_NODE_HH
62
63
64 //== INCLUDES =================================================================
65
66 // GMU
67 #include "BaseNode.hh"
68 #include "TransformNode.hh"
69
70 #include <vector>
71
72 // Qt
73 #include <QEvent>
74 #include <QMouseEvent>
75
76 #ifdef max
77 # undef max
78 #endif
79
80 #ifdef min
81 # undef min
82 #endif
83
84
85
86 //== NAMESPACES ===============================================================
87
88
89 namespace ACG {
90 namespace SceneGraph {
91
92
93 //== CLASS DEFINITION =========================================================
94
95
104 class ACGDLLEXPORT TrackballNode : public TransformNode
105 {
106 public:
107
108
110 TrackballNode( BaseNode* _parent=0,
111 const std::string& _name="<TrackballNode>" )
112 : TransformNode(_parent, _name),
113 drawTrackball_(false),
114 drawAxes_(false),
115 radius_(1.0),
116 xAxis_(1.0, 0.0, 0.0),
117 yAxis_(0.0, 1.0, 0.0),
118 zAxis_(0.0, 0.0, 1.0)
119 {}
120
121
123 ~TrackballNode() {}
124
125
127 ACG_CLASSNAME(TrackballNode);
128
129
130 //
131 // METHODS
132 //
133
134
136 void set_radius(double _r) { radius_ = _r; }
138 double radius() const { return radius_; }
139
140
142 virtual void setIdentity() {
143 Vec3d vec (1.0, 1.0, 1.0);
144
145 vec = scale ().transform_point(vec);
146 radius_ *= vec.max ();
147 TransformNode::setIdentity();
148 }
149
150
152 void set_draw_trackball(bool _b) { drawTrackball_ = _b; }
154 bool draw_trackball() const { return drawTrackball_; }
155
156
158 void set_draw_axes(bool _b) { drawAxes_ = _b; }
160 bool draw_axes() const { return drawAxes_; }
161
162
164 void draw(GLState& _state, const DrawModes::DrawMode& _drawMode);
165
166
168 virtual void mouseEvent(GLState& _state, QMouseEvent* _event);
169
170
171 private:
172
174 bool mapToSphere(GLState& _state, const Vec2i& _v2, Vec3d& _v3);
175
176
177 // ELEMENTS
178 bool drawTrackball_,
179 drawAxes_;
180 double radius_;
181 Vec3d xAxis_, yAxis_, zAxis_;
182 Vec2i oldPoint2D_;
183 };
184
185
186 //=============================================================================
187 } // namespace SceneGraph
188 } // namespace ACG
189 //=============================================================================
190 #endif // ACG_TRACKBALL_NODE_HH defined
191 //=============================================================================
192
ACG::SceneGraph::TrackballNode::radius
double radius() const
Get trackball radius.
Definition: TrackballNode.hh:138
ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ACG::SceneGraph::BaseNode
Definition: BaseNode.hh:135
ACG::SceneGraph::TrackballNode::set_draw_axes
void set_draw_axes(bool _b)
Turn drawing the axes on/off.
Definition: TrackballNode.hh:158
ACG::GLState
Definition: GLState.hh:220
ACG::SceneGraph::TrackballNode::set_draw_trackball
void set_draw_trackball(bool _b)
Turn on/off drawing of the trackball.
Definition: TrackballNode.hh:152
ACG::SceneGraph::DrawModes::DrawMode
Specifies a DrawMode.
Definition: DrawModes.hh:294
ACG::SceneGraph::TrackballNode::setIdentity
virtual void setIdentity()
override TransformNode::setIdentity() (update radius_)
Definition: TrackballNode.hh:142
OpenMesh::VectorT
Definition: Vector11T.hh:83
ACG::SceneGraph::TrackballNode::set_radius
void set_radius(double _r)
Set trackball radius.
Definition: TrackballNode.hh:136
ACG::SceneGraph::TrackballNode
Definition: TrackballNode.hh:104
ACG::SceneGraph::TrackballNode::draw_trackball
bool draw_trackball() const
Is trackball-drawing on?
Definition: TrackballNode.hh:154
ACG::SceneGraph::TransformNode
Definition: TransformNode.hh:95
ACG::SceneGraph::TrackballNode::~TrackballNode
~TrackballNode()
Destructor.
Definition: TrackballNode.hh:123
ACG::SceneGraph::TransformNode::setIdentity
virtual void setIdentity()
Definition: TransformNode.cc:118
ACG::SceneGraph::TrackballNode::draw_axes
bool draw_axes() const
Is axes-drawing on?
Definition: TrackballNode.hh:160
ACG::SceneGraph::TrackballNode::TrackballNode
TrackballNode(BaseNode *_parent=0, const std::string &_name="<TrackballNode>")
Default constructor.
Definition: TrackballNode.hh:110