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ImporterT.hh
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48 
49 
50 //=============================================================================
51 //
52 // Implements an importer module for arbitrary OpenMesh meshes
53 //
54 //=============================================================================
55 
56 
57 #ifndef __IMPORTERT_HH__
58 #define __IMPORTERT_HH__
59 
60 
61 //=== INCLUDES ================================================================
62 
63 
64 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
65 #include <OpenMesh/Core/Utils/vector_cast.hh>
66 #include <OpenMesh/Core/Utils/color_cast.hh>
69 
70 
71 //== NAMESPACES ===============================================================
72 
73 
74 namespace OpenMesh {
75 namespace IO {
76 
77 
78 //=== IMPLEMENTATION ==========================================================
79 
80 
84 template <class Mesh>
85 class ImporterT : public BaseImporter
86 {
87 public:
88 
89  typedef typename Mesh::Point Point;
90  typedef typename Mesh::Normal Normal;
91  typedef typename Mesh::Color Color;
92  typedef typename Mesh::TexCoord2D TexCoord2D;
93  typedef std::vector<VertexHandle> VHandles;
94 
95 
96  ImporterT(Mesh& _mesh) : mesh_(_mesh), halfedgeNormals_() {}
97 
98 
99  virtual VertexHandle add_vertex(const Vec3f& _point)
100  {
101  return mesh_.add_vertex(vector_cast<Point>(_point));
102  }
103 
104  virtual VertexHandle add_vertex()
105  {
106  return mesh_.new_vertex();
107  }
108 
109  virtual FaceHandle add_face(const VHandles& _indices)
110  {
111  FaceHandle fh;
112 
113  if (_indices.size() > 2)
114  {
115  VHandles::const_iterator it, it2, end(_indices.end());
116 
117 
118  // test for valid vertex indices
119  for (it=_indices.begin(); it!=end; ++it)
120  if (! mesh_.is_valid_handle(*it))
121  {
122  omerr() << "ImporterT: Face contains invalid vertex index\n";
123  return fh;
124  }
125 
126 
127  // don't allow double vertices
128  for (it=_indices.begin(); it!=end; ++it)
129  for (it2=it+1; it2!=end; ++it2)
130  if (*it == *it2)
131  {
132  omerr() << "ImporterT: Face has equal vertices\n";
133  failed_faces_.push_back(_indices);
134  return fh;
135  }
136 
137 
138  // try to add face
139  fh = mesh_.add_face(_indices);
140  if (!fh.is_valid())
141  {
142  failed_faces_.push_back(_indices);
143  return fh;
144  }
145 
146  //write the half edge normals
147  if (mesh_.has_halfedge_normals())
148  {
149  //iterate over all incoming haldedges of the added face
150  for (typename Mesh::FaceHalfedgeIter fh_iter = mesh_.fh_begin(fh);
151  fh_iter != mesh_.fh_end(fh); ++fh_iter)
152  {
153  //and write the normals to it
154  typename Mesh::HalfedgeHandle heh = *fh_iter;
155  typename Mesh::VertexHandle vh = mesh_.to_vertex_handle(heh);
156  typename std::map<VertexHandle,Normal>::iterator it_heNs = halfedgeNormals_.find(vh);
157  if (it_heNs != halfedgeNormals_.end())
158  mesh_.set_normal(heh,it_heNs->second);
159  }
160  halfedgeNormals_.clear();
161  }
162  }
163  return fh;
164  }
165 
166  // vertex attributes
167 
168  virtual void set_point(VertexHandle _vh, const Vec3f& _point)
169  {
170  mesh_.set_point(_vh,vector_cast<Point>(_point));
171  }
172 
173  virtual void set_normal(VertexHandle _vh, const Vec3f& _normal)
174  {
175  if (mesh_.has_vertex_normals())
176  mesh_.set_normal(_vh, vector_cast<Normal>(_normal));
177 
178  //saves normals for half edges.
179  //they will be written, when the face is added
180  if (mesh_.has_halfedge_normals())
181  halfedgeNormals_[_vh] = vector_cast<Normal>(_normal);
182  }
183 
184  virtual void set_color(VertexHandle _vh, const Vec4uc& _color)
185  {
186  if (mesh_.has_vertex_colors())
187  mesh_.set_color(_vh, color_cast<Color>(_color));
188  }
189 
190  virtual void set_color(VertexHandle _vh, const Vec3uc& _color)
191  {
192  if (mesh_.has_vertex_colors())
193  mesh_.set_color(_vh, color_cast<Color>(_color));
194  }
195 
196  virtual void set_color(VertexHandle _vh, const Vec4f& _color)
197  {
198  if (mesh_.has_vertex_colors())
199  mesh_.set_color(_vh, color_cast<Color>(_color));
200  }
201 
202  virtual void set_color(VertexHandle _vh, const Vec3f& _color)
203  {
204  if (mesh_.has_vertex_colors())
205  mesh_.set_color(_vh, color_cast<Color>(_color));
206  }
207 
208  virtual void set_texcoord(VertexHandle _vh, const Vec2f& _texcoord)
209  {
210  if (mesh_.has_vertex_texcoords2D())
211  mesh_.set_texcoord2D(_vh, vector_cast<TexCoord2D>(_texcoord));
212  }
213 
214  virtual void set_texcoord(HalfedgeHandle _heh, const Vec2f& _texcoord)
215  {
216  if (mesh_.has_halfedge_texcoords2D())
217  mesh_.set_texcoord2D(_heh, vector_cast<TexCoord2D>(_texcoord));
218  }
219 
220  // edge attributes
221 
222  virtual void set_color(EdgeHandle _eh, const Vec4uc& _color)
223  {
224  if (mesh_.has_edge_colors())
225  mesh_.set_color(_eh, color_cast<Color>(_color));
226  }
227 
228  virtual void set_color(EdgeHandle _eh, const Vec3uc& _color)
229  {
230  if (mesh_.has_edge_colors())
231  mesh_.set_color(_eh, color_cast<Color>(_color));
232  }
233 
234  virtual void set_color(EdgeHandle _eh, const Vec4f& _color)
235  {
236  if (mesh_.has_edge_colors())
237  mesh_.set_color(_eh, color_cast<Color>(_color));
238  }
239 
240  virtual void set_color(EdgeHandle _eh, const Vec3f& _color)
241  {
242  if (mesh_.has_edge_colors())
243  mesh_.set_color(_eh, color_cast<Color>(_color));
244  }
245 
246  // face attributes
247 
248  virtual void set_normal(FaceHandle _fh, const Vec3f& _normal)
249  {
250  if (mesh_.has_face_normals())
251  mesh_.set_normal(_fh, vector_cast<Normal>(_normal));
252  }
253 
254  virtual void set_color(FaceHandle _fh, const Vec3uc& _color)
255  {
256  if (mesh_.has_face_colors())
257  mesh_.set_color(_fh, color_cast<Color>(_color));
258  }
259 
260  virtual void set_color(FaceHandle _fh, const Vec4uc& _color)
261  {
262  if (mesh_.has_face_colors())
263  mesh_.set_color(_fh, color_cast<Color>(_color));
264  }
265 
266  virtual void set_color(FaceHandle _fh, const Vec3f& _color)
267  {
268  if (mesh_.has_face_colors())
269  mesh_.set_color(_fh, color_cast<Color>(_color));
270  }
271 
272  virtual void set_color(FaceHandle _fh, const Vec4f& _color)
273  {
274  if (mesh_.has_face_colors())
275  mesh_.set_color(_fh, color_cast<Color>(_color));
276  }
277 
278  virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec2f>& _face_texcoords)
279  {
280  // get first halfedge handle
281  HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
282  HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
283 
284  // find start heh
285  while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
286  cur_heh = mesh_.next_halfedge_handle( cur_heh);
287 
288  for(unsigned int i=0; i<_face_texcoords.size(); ++i)
289  {
290  set_texcoord( cur_heh, _face_texcoords[i]);
291  cur_heh = mesh_.next_halfedge_handle( cur_heh);
292  }
293  }
294 
295  virtual void set_face_texindex( FaceHandle _fh, int _texId ) {
296  if ( mesh_.has_face_texture_index() ) {
297  mesh_.set_texture_index(_fh , _texId);
298  }
299  }
300 
301  virtual void add_texture_information( int _id , std::string _name ) {
303 
304  if ( !mesh_.get_property_handle(property,"TextureMapping") ) {
305  mesh_.add_property(property,"TextureMapping");
306  }
307 
308  if ( mesh_.property(property).find( _id ) == mesh_.property(property).end() )
309  mesh_.property(property)[_id] = _name;
310  }
311 
312  // low-level access to mesh
313 
314  virtual BaseKernel* kernel() { return &mesh_; }
315 
316  bool is_triangle_mesh() const
317  { return Mesh::is_triangles(); }
318 
319  void reserve(unsigned int nV, unsigned int nE, unsigned int nF)
320  {
321  mesh_.reserve(nV, nE, nF);
322  }
323 
324  // query number of faces, vertices, normals, texcoords
325  size_t n_vertices() const { return mesh_.n_vertices(); }
326  size_t n_faces() const { return mesh_.n_faces(); }
327  size_t n_edges() const { return mesh_.n_edges(); }
328 
329 
330  void prepare() { failed_faces_.clear(); }
331 
332 
333  void finish()
334  {
335  if (!failed_faces_.empty())
336  {
337  omerr() << failed_faces_.size()
338  << " faces failed, adding them as isolated faces\n";
339 
340  for (unsigned int i=0; i<failed_faces_.size(); ++i)
341  {
342  VHandles& vhandles = failed_faces_[i];
343 
344  // double vertices
345  for (unsigned int j=0; j<vhandles.size(); ++j)
346  {
347  Point p = mesh_.point(vhandles[j]);
348  vhandles[j] = mesh_.add_vertex(p);
349  // DO STORE p, reference may not work since vertex array
350  // may be relocated after adding a new vertex !
351 
352  // Mark vertices of failed face as non-manifold
353  if (mesh_.has_vertex_status()) {
354  mesh_.status(vhandles[j]).set_fixed_nonmanifold(true);
355  }
356  }
357 
358  // add face
359  FaceHandle fh = mesh_.add_face(vhandles);
360 
361  // Mark failed face as non-manifold
362  if (mesh_.has_face_status())
363  mesh_.status(fh).set_fixed_nonmanifold(true);
364 
365  // Mark edges of failed face as non-two-manifold
366  if (mesh_.has_edge_status()) {
367  typename Mesh::FaceEdgeIter fe_it = mesh_.fe_iter(fh);
368  for(; fe_it.is_valid(); ++fe_it) {
369  mesh_.status(*fe_it).set_fixed_nonmanifold(true);
370  }
371  }
372  }
373 
374  failed_faces_.clear();
375  }
376  }
377 
378 
379 
380 private:
381 
382  Mesh& mesh_;
383  std::vector<VHandles> failed_faces_;
384  // stores normals for halfedges of the next face
385  std::map<VertexHandle,Normal> halfedgeNormals_;
386 };
387 
388 
389 //=============================================================================
390 } // namespace IO
391 } // namespace OpenMesh
392 //=============================================================================
393 #endif
394 //=============================================================================
Add normals to mesh item (vertices/faces)
Definition: Attributes.hh:87
This class template provides an importer module for OpenMesh meshes.
Definition: ImporterT.hh:85
Handle representing a mesh property.
Definition: Property.hh:543
This class provides the basic property management like adding/removing properties and access to prope...
Definition: BaseKernel.hh:99
bool is_valid() const
The handle is valid iff the index is not equal to -1.
Definition: Handles.hh:77
Add 2D texture coordinates (vertices, halfedges)
Definition: Attributes.hh:92
This file provides the streams omlog, omout, and omerr.
Handle for a edge entity.
Definition: Handles.hh:137
Handle for a vertex entity.
Definition: Handles.hh:123
This file provides some macros containing attribute usage.
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64
Add colors to mesh item (vertices/faces/edges)
Definition: Attributes.hh:88
Base class for importer modules.
Definition: BaseImporter.hh:88
Handle for a halfedge entity.
Definition: Handles.hh:130
Handle for a face entity.
Definition: Handles.hh:144

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