OpenMesh
ImporterT.hh
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41 
42 
43 
44 
45 //=============================================================================
46 //
47 // Implements an importer module for arbitrary OpenMesh meshes
48 //
49 //=============================================================================
50 
51 
52 #ifndef __IMPORTERT_HH__
53 #define __IMPORTERT_HH__
54 
55 
56 //=== INCLUDES ================================================================
57 
58 
59 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
60 #include <OpenMesh/Core/Utils/vector_cast.hh>
61 #include <OpenMesh/Core/Utils/color_cast.hh>
64 
65 
66 //== NAMESPACES ===============================================================
67 
68 
69 namespace OpenMesh {
70 namespace IO {
71 
72 
73 //=== IMPLEMENTATION ==========================================================
74 
75 
79 template <class Mesh>
80 class ImporterT : public BaseImporter
81 {
82 public:
83 
84  typedef typename Mesh::Point Point;
85  typedef typename Mesh::Normal Normal;
86  typedef typename Mesh::Color Color;
87  typedef typename Mesh::TexCoord2D TexCoord2D;
88  typedef typename Mesh::TexCoord3D TexCoord3D;
89  typedef std::vector<VertexHandle> VHandles;
90 
91 
92  explicit ImporterT(Mesh& _mesh) : mesh_(_mesh), halfedgeNormals_() {}
93 
94 
95  virtual VertexHandle add_vertex(const Vec3f& _point) override
96  {
97  return mesh_.add_vertex(vector_cast<Point>(_point));
98  }
99 
100  virtual VertexHandle add_vertex(const Vec3d& _point) override
101  {
102  return mesh_.add_vertex(vector_cast<Point>(_point));
103  }
104 
105  virtual VertexHandle add_vertex() override
106  {
107  return mesh_.new_vertex();
108  }
109 
110  virtual HalfedgeHandle add_edge(VertexHandle _vh0, VertexHandle _vh1) override
111  {
112  return mesh_.new_edge(_vh0, _vh1);
113  }
114 
115  virtual FaceHandle add_face(const VHandles& _indices) override
116  {
117  FaceHandle fh;
118 
119  if (_indices.size() > 2)
120  {
121  VHandles::const_iterator it, it2, end(_indices.end());
122 
123 
124  // test for valid vertex indices
125  for (it=_indices.begin(); it!=end; ++it)
126  if (! mesh_.is_valid_handle(*it))
127  {
128  omerr() << "ImporterT: Face contains invalid vertex index\n";
129  return fh;
130  }
131 
132 
133  // don't allow double vertices
134  for (it=_indices.begin(); it!=end; ++it)
135  for (it2=it+1; it2!=end; ++it2)
136  if (*it == *it2)
137  {
138  omerr() << "ImporterT: Face has equal vertices\n";
139  return fh;
140  }
141 
142 
143  // try to add face
144  fh = mesh_.add_face(_indices);
145  // separate non-manifold faces and mark them
146  if (!fh.is_valid())
147  {
148  VHandles vhandles(_indices.size());
149 
150  // double vertices
151  for (unsigned int j=0; j<_indices.size(); ++j)
152  {
153  // DO STORE p, reference may not work since vertex array
154  // may be relocated after adding a new vertex !
155  Point p = mesh_.point(_indices[j]);
156  vhandles[j] = mesh_.add_vertex(p);
157 
158  // Mark vertices of failed face as non-manifold
159  if (mesh_.has_vertex_status()) {
160  mesh_.status(vhandles[j]).set_fixed_nonmanifold(true);
161  }
162  }
163 
164  // add face
165  fh = mesh_.add_face(vhandles);
166 
167  // Mark failed face as non-manifold
168  if (mesh_.has_face_status())
169  mesh_.status(fh).set_fixed_nonmanifold(true);
170 
171  // Mark edges of failed face as non-two-manifold
172  if (mesh_.has_edge_status()) {
173  typename Mesh::FaceEdgeIter fe_it = mesh_.fe_iter(fh);
174  for(; fe_it.is_valid(); ++fe_it) {
175  mesh_.status(*fe_it).set_fixed_nonmanifold(true);
176  }
177  }
178  }
179 
180  //write the half edge normals
181  if (mesh_.has_halfedge_normals())
182  {
183  //iterate over all incoming haldedges of the added face
184  for (typename Mesh::FaceHalfedgeIter fh_iter = mesh_.fh_begin(fh);
185  fh_iter != mesh_.fh_end(fh); ++fh_iter)
186  {
187  //and write the normals to it
188  typename Mesh::HalfedgeHandle heh = *fh_iter;
189  typename Mesh::VertexHandle vh = mesh_.to_vertex_handle(heh);
190  typename std::map<VertexHandle,Normal>::iterator it_heNs = halfedgeNormals_.find(vh);
191  if (it_heNs != halfedgeNormals_.end())
192  mesh_.set_normal(heh,it_heNs->second);
193  }
194  halfedgeNormals_.clear();
195  }
196  }
197  return fh;
198  }
199 
200  virtual FaceHandle add_face(HalfedgeHandle _heh) override
201  {
202  auto fh = mesh_.new_face();
203  mesh_.set_halfedge_handle(fh, _heh);
204  return fh;
205  }
206 
207  // vertex attributes
208 
209  virtual void set_point(VertexHandle _vh, const Vec3f& _point) override
210  {
211  mesh_.set_point(_vh,vector_cast<Point>(_point));
212  }
213 
214  virtual void set_halfedge(VertexHandle _vh, HalfedgeHandle _heh) override
215  {
216  mesh_.set_halfedge_handle(_vh, _heh);
217  }
218 
219  virtual void set_normal(VertexHandle _vh, const Vec3f& _normal) override
220  {
221  if (mesh_.has_vertex_normals())
222  mesh_.set_normal(_vh, vector_cast<Normal>(_normal));
223 
224  //saves normals for half edges.
225  //they will be written, when the face is added
226  if (mesh_.has_halfedge_normals())
227  halfedgeNormals_[_vh] = vector_cast<Normal>(_normal);
228  }
229 
230  virtual void set_normal(VertexHandle _vh, const Vec3d& _normal) override
231  {
232  if (mesh_.has_vertex_normals())
233  mesh_.set_normal(_vh, vector_cast<Normal>(_normal));
234 
235  //saves normals for half edges.
236  //they will be written, when the face is added
237  if (mesh_.has_halfedge_normals())
238  halfedgeNormals_[_vh] = vector_cast<Normal>(_normal);
239  }
240 
241  virtual void set_color(VertexHandle _vh, const Vec4uc& _color) override
242  {
243  if (mesh_.has_vertex_colors())
244  mesh_.set_color(_vh, color_cast<Color>(_color));
245  }
246 
247  virtual void set_color(VertexHandle _vh, const Vec3uc& _color) override
248  {
249  if (mesh_.has_vertex_colors())
250  mesh_.set_color(_vh, color_cast<Color>(_color));
251  }
252 
253  virtual void set_color(VertexHandle _vh, const Vec4f& _color) override
254  {
255  if (mesh_.has_vertex_colors())
256  mesh_.set_color(_vh, color_cast<Color>(_color));
257  }
258 
259  virtual void set_color(VertexHandle _vh, const Vec3f& _color) override
260  {
261  if (mesh_.has_vertex_colors())
262  mesh_.set_color(_vh, color_cast<Color>(_color));
263  }
264 
265  virtual void set_texcoord(VertexHandle _vh, const Vec2f& _texcoord) override
266  {
267  if (mesh_.has_vertex_texcoords2D())
268  mesh_.set_texcoord2D(_vh, vector_cast<TexCoord2D>(_texcoord));
269  }
270 
271  virtual void set_status(VertexHandle _vh, const OpenMesh::Attributes::StatusInfo& _status) override
272  {
273  if (!mesh_.has_vertex_status())
274  mesh_.request_vertex_status();
275  mesh_.status(_vh) = _status;
276  }
277 
278  virtual void set_next(HalfedgeHandle _heh, HalfedgeHandle _next) override
279  {
280  mesh_.set_next_halfedge_handle(_heh, _next);
281  }
282 
283  virtual void set_face(HalfedgeHandle _heh, FaceHandle _fh) override
284  {
285  mesh_.set_face_handle(_heh, _fh);
286  }
287 
288 
289  virtual void set_texcoord(HalfedgeHandle _heh, const Vec2f& _texcoord) override
290  {
291  if (mesh_.has_halfedge_texcoords2D())
292  mesh_.set_texcoord2D(_heh, vector_cast<TexCoord2D>(_texcoord));
293  }
294 
295  virtual void set_texcoord(VertexHandle _vh, const Vec3f& _texcoord) override
296  {
297  if (mesh_.has_vertex_texcoords3D())
298  mesh_.set_texcoord3D(_vh, vector_cast<TexCoord3D>(_texcoord));
299  }
300 
301  virtual void set_texcoord(HalfedgeHandle _heh, const Vec3f& _texcoord) override
302  {
303  if (mesh_.has_halfedge_texcoords3D())
304  mesh_.set_texcoord3D(_heh, vector_cast<TexCoord3D>(_texcoord));
305  }
306 
307  virtual void set_status(HalfedgeHandle _heh, const OpenMesh::Attributes::StatusInfo& _status) override
308  {
309  if (!mesh_.has_halfedge_status())
310  mesh_.request_halfedge_status();
311  mesh_.status(_heh) = _status;
312  }
313 
314  // edge attributes
315 
316  virtual void set_color(EdgeHandle _eh, const Vec4uc& _color) override
317  {
318  if (mesh_.has_edge_colors())
319  mesh_.set_color(_eh, color_cast<Color>(_color));
320  }
321 
322  virtual void set_color(EdgeHandle _eh, const Vec3uc& _color) override
323  {
324  if (mesh_.has_edge_colors())
325  mesh_.set_color(_eh, color_cast<Color>(_color));
326  }
327 
328  virtual void set_color(EdgeHandle _eh, const Vec4f& _color) override
329  {
330  if (mesh_.has_edge_colors())
331  mesh_.set_color(_eh, color_cast<Color>(_color));
332  }
333 
334  virtual void set_color(EdgeHandle _eh, const Vec3f& _color) override
335  {
336  if (mesh_.has_edge_colors())
337  mesh_.set_color(_eh, color_cast<Color>(_color));
338  }
339 
340  virtual void set_status(EdgeHandle _eh, const OpenMesh::Attributes::StatusInfo& _status) override
341  {
342  if (!mesh_.has_edge_status())
343  mesh_.request_edge_status();
344  mesh_.status(_eh) = _status;
345  }
346 
347  // face attributes
348 
349  virtual void set_normal(FaceHandle _fh, const Vec3f& _normal) override
350  {
351  if (mesh_.has_face_normals())
352  mesh_.set_normal(_fh, vector_cast<Normal>(_normal));
353  }
354 
355  virtual void set_normal(FaceHandle _fh, const Vec3d& _normal) override
356  {
357  if (mesh_.has_face_normals())
358  mesh_.set_normal(_fh, vector_cast<Normal>(_normal));
359  }
360 
361  virtual void set_color(FaceHandle _fh, const Vec3uc& _color) override
362  {
363  if (mesh_.has_face_colors())
364  mesh_.set_color(_fh, color_cast<Color>(_color));
365  }
366 
367  virtual void set_color(FaceHandle _fh, const Vec4uc& _color) override
368  {
369  if (mesh_.has_face_colors())
370  mesh_.set_color(_fh, color_cast<Color>(_color));
371  }
372 
373  virtual void set_color(FaceHandle _fh, const Vec3f& _color) override
374  {
375  if (mesh_.has_face_colors())
376  mesh_.set_color(_fh, color_cast<Color>(_color));
377  }
378 
379  virtual void set_color(FaceHandle _fh, const Vec4f& _color) override
380  {
381  if (mesh_.has_face_colors())
382  mesh_.set_color(_fh, color_cast<Color>(_color));
383  }
384 
385  virtual void set_status(FaceHandle _fh, const OpenMesh::Attributes::StatusInfo& _status) override
386  {
387  if (!mesh_.has_face_status())
388  mesh_.request_face_status();
389  mesh_.status(_fh) = _status;
390  }
391 
392  virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec2f>& _face_texcoords) override
393  {
394  // get first halfedge handle
395  HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
396  HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
397 
398  // find start heh
399  while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
400  cur_heh = mesh_.next_halfedge_handle( cur_heh);
401 
402  for(unsigned int i=0; i<_face_texcoords.size(); ++i)
403  {
404  set_texcoord( cur_heh, _face_texcoords[i]);
405  cur_heh = mesh_.next_halfedge_handle( cur_heh);
406  }
407  }
408 
409  virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec3f>& _face_texcoords) override
410  {
411  // get first halfedge handle
412  HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
413  HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
414 
415  // find start heh
416  while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
417  cur_heh = mesh_.next_halfedge_handle( cur_heh);
418 
419  for(unsigned int i=0; i<_face_texcoords.size(); ++i)
420  {
421  set_texcoord( cur_heh, _face_texcoords[i]);
422  cur_heh = mesh_.next_halfedge_handle( cur_heh);
423  }
424  }
425 
426  virtual void set_face_texindex( FaceHandle _fh, int _texId ) override
427  {
428  if ( mesh_.has_face_texture_index() ) {
429  mesh_.set_texture_index(_fh , _texId);
430  }
431  }
432 
433  virtual void add_texture_information( int _id , std::string _name ) override
434  {
436 
437  if ( !mesh_.get_property_handle(property,"TextureMapping") ) {
438  mesh_.add_property(property,"TextureMapping");
439  }
440 
441  if ( mesh_.property(property).find( _id ) == mesh_.property(property).end() )
442  mesh_.property(property)[_id] = _name;
443  }
444 
445  // low-level access to mesh
446 
447  virtual BaseKernel* kernel() override { return &mesh_; }
448 
449  bool is_triangle_mesh() const override
450  { return Mesh::is_triangles(); }
451 
452  void reserve(unsigned int nV, unsigned int nE, unsigned int nF) override
453  {
454  mesh_.reserve(nV, nE, nF);
455  }
456 
457  // query number of faces, vertices, normals, texcoords
458  size_t n_vertices() const override { return mesh_.n_vertices(); }
459  size_t n_faces() const override { return mesh_.n_faces(); }
460  size_t n_edges() const override { return mesh_.n_edges(); }
461 
462 
463  void prepare() override{ }
464 
465 
466  void finish() override { }
467 
468 
469 private:
470 
471  Mesh& mesh_;
472  // stores normals for halfedges of the next face
473  std::map<VertexHandle,Normal> halfedgeNormals_;
474 };
475 
476 
477 //=============================================================================
478 } // namespace IO
479 } // namespace OpenMesh
480 //=============================================================================
481 #endif
482 //=============================================================================
Handle for a face entity.
Definition: Handles.hh:141
Polygonal mesh based on the ArrayKernel.
Definition: PolyMesh_ArrayKernelT.hh:94
SmartVertexHandle new_vertex()
Uses default copy and assignment operator.
Definition: PolyMeshT.hh:201
Kernel::TexCoord2D TexCoord2D
TexCoord2D type.
Definition: PolyMeshT.hh:120
This class template provides an importer module for OpenMesh meshes.
Definition: ImporterT.hh:80
bool is_valid() const
The handle is valid iff the index is not negative.
Definition: Handles.hh:72
Handle for a vertex entity.
Definition: Handles.hh:120
This file provides some macros containing attribute usage.
Kernel::Normal Normal
Normal type.
Definition: PolyMeshT.hh:114
Kernel::TexCoord3D TexCoord3D
TexCoord3D type.
Definition: PolyMeshT.hh:122
Kernel::FaceHalfedgeIter FaceHalfedgeIter
Circulator.
Definition: PolyMeshT.hh:168
SmartVertexHandle add_vertex(const Point &_p)
Alias for new_vertex(const Point&).
Definition: PolyMeshT.hh:235
This file provides the streams omlog, omout, and omerr.
Kernel::FaceEdgeIter FaceEdgeIter
Circulator.
Definition: PolyMeshT.hh:169
Base class for importer modules.
Definition: BaseImporter.hh:83
Handle for a edge entity.
Definition: Handles.hh:134
Handle representing a mesh property.
Definition: Property.hh:544
Add status information to a base class.
Definition: Status.hh:94
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:112
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
Handle for a halfedge entity.
Definition: Handles.hh:127
Kernel::VertexHandle VertexHandle
Handle for referencing the corresponding item.
Definition: PolyMeshT.hh:136
This class provides low-level property management like adding/removing properties and access to prope...
Definition: BaseKernel.hh:97
Kernel::Color Color
Color type.
Definition: PolyMeshT.hh:116

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