Developer Documentation
OBJNode.hh
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50 
51 
52 //=============================================================================
53 //
54 // CLASS FastMesh
55 //
56 //=============================================================================
57 
58 
59 #ifndef ACG_OBJ_NODE_HH
60 #define ACG_OBJ_NODE_HH
61 
62 
63 //== INCLUDES =================================================================
64 
65 #include "BaseNode.hh"
66 #include "DrawModes.hh"
67 #include "../Math/VectorT.hh"
68 #include <string>
69 #include <vector>
70 
71 
72 //== FORWARD DECLARATION ======================================================
73 
74 
75 //== NAMESPACES ===============================================================
76 
77 
78 namespace ACG {
79 namespace SceneGraph {
80 
81 
82 //== CLASS DEFINITION =========================================================
83 
84 
85 class ACGDLLEXPORT OBJNode : public BaseNode
86 {
87 
88 public:
89 
91  OBJNode( BaseNode* _parent=0,
92  std::string _name="<OBJNode>" )
93  : BaseNode(_parent, _name)
94  {}
95 
96 
98  virtual ~OBJNode() {}
99 
100 
101  ACG_CLASSNAME(OBJNode);
102 
103 
105  DrawModes::DrawMode availableDrawModes() const;
106 
108  void boundingBox(Vec3d& _bbMin, Vec3d& _bbMax);
109 
111  void draw(GLState& _state, const DrawModes::DrawMode& _drawMode);
112 
114  void pick(GLState& _state, PickTarget _target);
115 
116 
117  struct Face
118  {
119  Face(int _i0=-1, int _i1=-1, int _i2=-1,
120  int _t0=-1, int _t1=-1, int _t2=-1)
121  : i0(_i0), i1(_i1), i2(_i2),
122  t0(_t0), t1(_t1), t2(_t2) {}
123  int i0, i1, i2, t0, t1, t2;
124  };
125 
126 
128  size_t n_vertices() const { return vertices_.size(); }
130  size_t n_faces() const { return faces_.size(); }
132  size_t n_normals() const { return normals_.size(); }
134  size_t n_texcoords() const { return texCoords_.size(); }
135 
136 
138  void clear()
139  {
140  vertices_.clear();
141  faces_.clear();
142  normals_.clear();
143  texCoords_.clear();
144  }
145 
146 
148  size_t add_vertex(const Vec3f& _v)
149  {
150  vertices_.push_back(_v);
151  return vertices_.size()-1;
152  }
153 
154 
156  size_t add_face(const Face& _f)
157  {
158  faces_.push_back(_f);
159  return faces_.size()-1;
160  }
161 
163  size_t add_face(unsigned int _i0,
164  unsigned int _i1,
165  unsigned int _i2)
166  {
167  faces_.push_back(Face(_i0, _i1, _i2));
168  return faces_.size()-1;
169  }
170 
171 
173  Vec3f& vertex(unsigned int _i)
174  {
175  assert(_i < n_vertices());
176  return vertices_[_i];
177  }
179  const Vec3f& vertex(unsigned int _i) const
180  {
181  assert(_i < n_vertices());
182  return vertices_[_i];
183  }
184 
185 
187  const Face& face(unsigned int _i) const
188  {
189  assert(_i < n_faces());
190  return faces_[_i];
191  }
193  Face& face(unsigned int _i)
194  {
195  assert(_i < n_faces());
196  return faces_[_i];
197  }
198 
199 
201  const Vec3f& normal(unsigned int _i) const
202  {
203  assert(_i < n_normals());
204  return normals_[_i];
205  }
207  Vec3f& normal(unsigned int _i)
208  {
209  assert(_i < n_normals());
210  return normals_[_i];
211  }
212 
213 
215  bool read(const std::string& _filename);
216 
217 
219  void update_face_normals();
220 
221 
222 private:
223 
224  void draw_obj() const;
225  void draw_obj_tex() const;
226 
227  std::vector<Vec3f> vertices_;
228  std::vector<Vec3f> normals_;
229  std::vector<Vec2f> texCoords_;
230  std::vector<Face> faces_;
231 };
232 
233 
234 //=============================================================================
235 } // namespace SceneGraph
236 } // namespace ACG
237 //=============================================================================
238 #endif // ACG_OBJ_NODE_HH
239 //=============================================================================
size_t n_faces() const
number of faces
Definition: OBJNode.hh:130
size_t n_vertices() const
number of vertices
Definition: OBJNode.hh:128
const Vec3f & vertex(unsigned int _i) const
get i&#39;th vertex
Definition: OBJNode.hh:179
void clear()
clear the node
Definition: OBJNode.hh:138
size_t add_face(unsigned int _i0, unsigned int _i1, unsigned int _i2)
add triangle
Definition: OBJNode.hh:163
PickTarget
What target to use for picking.
Definition: BaseNode.hh:99
size_t add_vertex(const Vec3f &_v)
add vertex
Definition: OBJNode.hh:148
Face & face(unsigned int _i)
get i&#39;th face
Definition: OBJNode.hh:193
const Face & face(unsigned int _i) const
get i&#39;th face
Definition: OBJNode.hh:187
size_t n_texcoords() const
number of texcoords
Definition: OBJNode.hh:134
virtual ~OBJNode()
destructor
Definition: OBJNode.hh:98
OBJNode(BaseNode *_parent=0, std::string _name="<OBJNode>")
Default constructor.
Definition: OBJNode.hh:91
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
Vec3f & normal(unsigned int _i)
get i&#39;th normal
Definition: OBJNode.hh:207
size_t add_face(const Face &_f)
add triangle
Definition: OBJNode.hh:156
const Vec3f & normal(unsigned int _i) const
get i&#39;th normal
Definition: OBJNode.hh:201
Vec3f & vertex(unsigned int _i)
get i&#39;th vertex
Definition: OBJNode.hh:173
size_t n_normals() const
number of normals
Definition: OBJNode.hh:132