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ImporterT.hh
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33 \*===========================================================================*/
34
35 /*===========================================================================*\
36 * *
37 * $Revision: 818 $ *
38 * $Date: 2013-03-04 17:36:20 +0100 (Mo, 04. Mär 2013) $ *
39 * *
40 \*===========================================================================*/
41
42
43 //=============================================================================
44 //
45 // Implements an importer module for arbitrary OpenMesh meshes
46 //
47 //=============================================================================
48
49
50 #ifndef __IMPORTERT_HH__
51 #define __IMPORTERT_HH__
52
53
54 //=== INCLUDES ================================================================
55
56
57 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
58 #include <OpenMesh/Core/Utils/vector_cast.hh>
59 #include <OpenMesh/Core/Utils/color_cast.hh>
60 #include <OpenMesh/Core/Mesh/Attributes.hh>
61 #include <OpenMesh/Core/System/omstream.hh>
62
63
64 //== NAMESPACES ===============================================================
65
66
67 namespace OpenMesh {
68 namespace IO {
69
70
71 //=== IMPLEMENTATION ==========================================================
72
73
77 template <class Mesh>
78 class ImporterT : public BaseImporter
79 {
80 public:
81
82 typedef typename Mesh::Point Point;
83 typedef typename Mesh::Normal Normal;
84 typedef typename Mesh::Color Color;
85 typedef typename Mesh::TexCoord2D TexCoord2D;
86 typedef std::vector<VertexHandle> VHandles;
87
88
89 ImporterT(Mesh& _mesh) : mesh_(_mesh), halfedgeNormals_() {}
90
91
92 virtual VertexHandle add_vertex(const Vec3f& _point)
93 {
94 return mesh_.add_vertex(vector_cast<Point>(_point));
95 }
96
97
98 virtual FaceHandle add_face(const VHandles& _indices)
99 {
100 FaceHandle fh;
101
102 if (_indices.size() > 2)
103 {
104 VHandles::const_iterator it, it2, end(_indices.end());
105
106
107 // test for valid vertex indices
108 for (it=_indices.begin(); it!=end; ++it)
109 if (! mesh_.is_valid_handle(*it))
110 {
111 omerr() << "ImporterT: Face contains invalid vertex index\n";
112 return fh;
113 }
114
115
116 // don't allow double vertices
117 for (it=_indices.begin(); it!=end; ++it)
118 for (it2=it+1; it2!=end; ++it2)
119 if (*it == *it2)
120 {
121 omerr() << "ImporterT: Face has equal vertices\n";
122 failed_faces_.push_back(_indices);
123 return fh;
124 }
125
126
127 // try to add face
128 fh = mesh_.add_face(_indices);
129 if (!fh.is_valid())
130 {
131 failed_faces_.push_back(_indices);
132 return fh;
133 }
134
135 //write the half edge normals
136 if (mesh_.has_halfedge_normals())
137 {
138 //iterate over all incoming haldedges of the added face
139 for (typename Mesh::FaceHalfedgeIter fh_iter = mesh_.fh_begin(fh);
140 fh_iter != mesh_.fh_end(fh); ++fh_iter)
141 {
142 //and write the normals to it
143 typename Mesh::HalfedgeHandle heh = fh_iter.current_halfedge_handle();
144 typename Mesh::VertexHandle vh = mesh_.to_vertex_handle(heh);
145 typename std::map<VertexHandle,Normal>::iterator it_heNs = halfedgeNormals_.find(vh);
146 if (it_heNs != halfedgeNormals_.end())
147 mesh_.set_normal(heh,it_heNs->second);
148 }
149 halfedgeNormals_.clear();
150 }
151 }
152 return fh;
153 }
154
155 // vertex attributes
156
157 virtual void set_normal(VertexHandle _vh, const Vec3f& _normal)
158 {
159 if (mesh_.has_vertex_normals())
160 mesh_.set_normal(_vh, vector_cast<Normal>(_normal));
161
162 //saves normals for half edges.
163 //they will be written, when the face is added
164 if (mesh_.has_halfedge_normals())
165 halfedgeNormals_[_vh] = vector_cast<Normal>(_normal);
166 }
167
168 virtual void set_color(VertexHandle _vh, const Vec4uc& _color)
169 {
170 if (mesh_.has_vertex_colors())
171 mesh_.set_color(_vh, color_cast<Color>(_color));
172 }
173
174 virtual void set_color(VertexHandle _vh, const Vec3uc& _color)
175 {
176 if (mesh_.has_vertex_colors())
177 mesh_.set_color(_vh, color_cast<Color>(_color));
178 }
179
180 virtual void set_color(VertexHandle _vh, const Vec4f& _color)
181 {
182 if (mesh_.has_vertex_colors())
183 mesh_.set_color(_vh, color_cast<Color>(_color));
184 }
185
186 virtual void set_color(VertexHandle _vh, const Vec3f& _color)
187 {
188 if (mesh_.has_vertex_colors())
189 mesh_.set_color(_vh, color_cast<Color>(_color));
190 }
191
192 virtual void set_texcoord(VertexHandle _vh, const Vec2f& _texcoord)
193 {
194 if (mesh_.has_vertex_texcoords2D())
195 mesh_.set_texcoord2D(_vh, vector_cast<TexCoord2D>(_texcoord));
196 }
197
198 virtual void set_texcoord(HalfedgeHandle _heh, const Vec2f& _texcoord)
199 {
200 if (mesh_.has_halfedge_texcoords2D())
201 mesh_.set_texcoord2D(_heh, vector_cast<TexCoord2D>(_texcoord));
202 }
203
204 // edge attributes
205
206 virtual void set_color(EdgeHandle _eh, const Vec4uc& _color)
207 {
208 if (mesh_.has_edge_colors())
209 mesh_.set_color(_eh, color_cast<Color>(_color));
210 }
211
212 virtual void set_color(EdgeHandle _eh, const Vec3uc& _color)
213 {
214 if (mesh_.has_edge_colors())
215 mesh_.set_color(_eh, color_cast<Color>(_color));
216 }
217
218 virtual void set_color(EdgeHandle _eh, const Vec4f& _color)
219 {
220 if (mesh_.has_edge_colors())
221 mesh_.set_color(_eh, color_cast<Color>(_color));
222 }
223
224 virtual void set_color(EdgeHandle _eh, const Vec3f& _color)
225 {
226 if (mesh_.has_edge_colors())
227 mesh_.set_color(_eh, color_cast<Color>(_color));
228 }
229
230 // face attributes
231
232 virtual void set_normal(FaceHandle _fh, const Vec3f& _normal)
233 {
234 if (mesh_.has_face_normals())
235 mesh_.set_normal(_fh, vector_cast<Normal>(_normal));
236 }
237
238 virtual void set_color(FaceHandle _fh, const Vec3uc& _color)
239 {
240 if (mesh_.has_face_colors())
241 mesh_.set_color(_fh, color_cast<Color>(_color));
242 }
243
244 virtual void set_color(FaceHandle _fh, const Vec4uc& _color)
245 {
246 if (mesh_.has_face_colors())
247 mesh_.set_color(_fh, color_cast<Color>(_color));
248 }
249
250 virtual void set_color(FaceHandle _fh, const Vec3f& _color)
251 {
252 if (mesh_.has_face_colors())
253 mesh_.set_color(_fh, color_cast<Color>(_color));
254 }
255
256 virtual void set_color(FaceHandle _fh, const Vec4f& _color)
257 {
258 if (mesh_.has_face_colors())
259 mesh_.set_color(_fh, color_cast<Color>(_color));
260 }
261
262 virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec2f>& _face_texcoords)
263 {
264 // get first halfedge handle
265 HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
266 HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
267
268 // find start heh
269 while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
270 cur_heh = mesh_.next_halfedge_handle( cur_heh);
271
272 for(unsigned int i=0; i<_face_texcoords.size(); ++i)
273 {
274 set_texcoord( cur_heh, _face_texcoords[i]);
275 cur_heh = mesh_.next_halfedge_handle( cur_heh);
276 }
277 }
278
279 virtual void set_face_texindex( FaceHandle _fh, int _texId ) {
280 if ( mesh_.has_face_texture_index() ) {
281 mesh_.set_texture_index(_fh , _texId);
282 }
283 }
284
285 virtual void add_texture_information( int _id , std::string _name ) {
286 OpenMesh::MPropHandleT< std::map< int, std::string > > property;
287
288 if ( !mesh_.get_property_handle(property,"TextureMapping") ) {
289 mesh_.add_property(property,"TextureMapping");
290 }
291
292 if ( mesh_.property(property).find( _id ) == mesh_.property(property).end() )
293 mesh_.property(property)[_id] = _name;
294 }
295
296 // low-level access to mesh
297
298 virtual BaseKernel* kernel() { return &mesh_; }
299
300 bool is_triangle_mesh() const
301 { return Mesh::is_triangles(); }
302
303 void reserve(unsigned int nV, unsigned int nE, unsigned int nF)
304 {
305 mesh_.reserve(nV, nE, nF);
306 }
307
308 // query number of faces, vertices, normals, texcoords
309 size_t n_vertices() const { return mesh_.n_vertices(); }
310 size_t n_faces() const { return mesh_.n_faces(); }
311 size_t n_edges() const { return mesh_.n_edges(); }
312
313
314 void prepare() { failed_faces_.clear(); }
315
316
317 void finish()
318 {
319 if (!failed_faces_.empty())
320 {
321 omerr() << failed_faces_.size()
322 << " faces failed, adding them as isolated faces\n";
323
324 for (unsigned int i=0; i<failed_faces_.size(); ++i)
325 {
326 VHandles& vhandles = failed_faces_[i];
327
328 // double vertices
329 for (unsigned int j=0; j<vhandles.size(); ++j)
330 {
331 Point p = mesh_.point(vhandles[j]);
332 vhandles[j] = mesh_.add_vertex(p);
333 // DO STORE p, reference may not work since vertex array
334 // may be relocated after adding a new vertex !
335
336 // Mark vertices of failed face as non-manifold
337 if (mesh_.has_vertex_status()) {
338 mesh_.status(vhandles[j]).set_fixed_nonmanifold(true);
339 }
340 }
341
342 // add face
343 FaceHandle fh = mesh_.add_face(vhandles);
344
345 // Mark failed face as non-manifold
346 if (mesh_.has_face_status())
347 mesh_.status(fh).set_fixed_nonmanifold(true);
348
349 // Mark edges of failed face as non-two-manifold
350 if (mesh_.has_edge_status()) {
351 typename Mesh::FaceEdgeIter fe_it = mesh_.fe_iter(fh);
352 for(; fe_it; ++fe_it) {
353 mesh_.status(fe_it).set_fixed_nonmanifold(true);
354 }
355 }
356 }
357
358 failed_faces_.clear();
359 }
360 }
361
362
363
364 private:
365
366 Mesh& mesh_;
367 std::vector<VHandles> failed_faces_;
368 // stores normals for halfedges of the next face
369 std::map<VertexHandle,Normal> halfedgeNormals_;
370 };
371
372
373 //=============================================================================
374 } // namespace IO
375 } // namespace OpenMesh
376 //=============================================================================
377 #endif
378 //=============================================================================