Developer Documentation
unittests_add_face.cc
1 #include <gtest/gtest.h>
2 #include <Unittests/unittests_common.hh>
3 #include <iostream>
4 
5 namespace {
6 
7 class OpenMeshAddFaceTriangleMesh : public OpenMeshBase {
8 
9  protected:
10 
11  // This function is called before each test is run
12  virtual void SetUp() {
13 
14  // Do some initial stuff with the member data here...
15  }
16 
17  // This function is called after all tests are through
18  virtual void TearDown() {
19 
20  // Do some final stuff with the member data here...
21  }
22 
23  // Member already defined in OpenMeshBase
24  //Mesh mesh_;
25 };
26 
27 class OpenMeshAddFacePolyMesh : public OpenMeshBasePoly {
28 
29  protected:
30 
31  // This function is called before each test is run
32  virtual void SetUp() {
33 
34  // Do some initial stuff with the member data here...
35  }
36 
37  // This function is called after all tests are through
38  virtual void TearDown() {
39 
40  // Do some final stuff with the member data here...
41  }
42 
43  // Member already defined in OpenMeshBase
44  //Mesh mesh_;
45 };
46 
47 /*
48  * ====================================================================
49  * Define tests below
50  * ====================================================================
51  */
52 
53 /* Adds two triangles to a tri mesh
54  */
55 TEST_F(OpenMeshAddFaceTriangleMesh, AddTrianglesToTrimesh) {
56 
57  mesh_.clear();
58 
59  // Add some vertices
60  Mesh::VertexHandle vhandle[4];
61 
62  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
63  vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
64  vhandle[2] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
65  vhandle[3] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
66 
67  // Add two faces
68  std::vector<Mesh::VertexHandle> face_vhandles;
69 
70  face_vhandles.push_back(vhandle[2]);
71  face_vhandles.push_back(vhandle[1]);
72  face_vhandles.push_back(vhandle[0]);
73 
74  mesh_.add_face(face_vhandles);
75 
76  face_vhandles.clear();
77 
78  face_vhandles.push_back(vhandle[2]);
79  face_vhandles.push_back(vhandle[0]);
80  face_vhandles.push_back(vhandle[3]);
81  mesh_.add_face(face_vhandles);
82 
83  // Test setup:
84  // 1 === 2
85  // | / |
86  // | / |
87  // | / |
88  // 0 === 3
89 
90  // Check setup
91  EXPECT_EQ(4u, mesh_.n_vertices() ) << "Wrong number of vertices";
92  EXPECT_EQ(2u, mesh_.n_faces() ) << "Wrong number of faces";
93 
94 }
95 
96 /* Adds a quad to a trimesh (should be triangulated afterwards)
97  */
98 TEST_F(OpenMeshAddFaceTriangleMesh, AddQuadToTrimesh) {
99 
100  mesh_.clear();
101 
102  // Add some vertices
103  Mesh::VertexHandle vhandle[4];
104 
105  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
106  vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
107  vhandle[2] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
108  vhandle[3] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
109 
110  // Add two faces
111  std::vector<Mesh::VertexHandle> face_vhandles;
112 
113  face_vhandles.push_back(vhandle[0]);
114  face_vhandles.push_back(vhandle[1]);
115  face_vhandles.push_back(vhandle[2]);
116  face_vhandles.push_back(vhandle[3]);
117 
118  mesh_.add_face(face_vhandles);
119 
120  // Test setup:
121  // 1 === 2
122  // | / |
123  // | / |
124  // | / |
125  // 0 === 3
126 
127  // Check setup
128  EXPECT_EQ(4u, mesh_.n_vertices() ) << "Wrong number of vertices";
129  EXPECT_EQ(2u, mesh_.n_faces() ) << "Wrong number of faces";
130 
131 }
132 
133 /* Adds a cube to a trimesh
134  */
135 TEST_F(OpenMeshAddFaceTriangleMesh, CreateTriangleMeshCube) {
136 
137  mesh_.clear();
138 
139  // Add some vertices
140  Mesh::VertexHandle vhandle[8];
141  vhandle[0] = mesh_.add_vertex(Mesh::Point(-1, -1, 1));
142  vhandle[1] = mesh_.add_vertex(Mesh::Point( 1, -1, 1));
143  vhandle[2] = mesh_.add_vertex(Mesh::Point( 1, 1, 1));
144  vhandle[3] = mesh_.add_vertex(Mesh::Point(-1, 1, 1));
145  vhandle[4] = mesh_.add_vertex(Mesh::Point(-1, -1, -1));
146  vhandle[5] = mesh_.add_vertex(Mesh::Point( 1, -1, -1));
147  vhandle[6] = mesh_.add_vertex(Mesh::Point( 1, 1, -1));
148  vhandle[7] = mesh_.add_vertex(Mesh::Point(-1, 1, -1));
149 
150  // Add six faces to form a cube
151  std::vector<Mesh::VertexHandle> face_vhandles;
152 
153  face_vhandles.clear();
154  face_vhandles.push_back(vhandle[0]);
155  face_vhandles.push_back(vhandle[1]);
156  face_vhandles.push_back(vhandle[3]);
157  mesh_.add_face(face_vhandles);
158 
159  face_vhandles.clear();
160  face_vhandles.push_back(vhandle[1]);
161  face_vhandles.push_back(vhandle[2]);
162  face_vhandles.push_back(vhandle[3]);
163  mesh_.add_face(face_vhandles);
164 
165  //=======================
166 
167  face_vhandles.clear();
168  face_vhandles.push_back(vhandle[7]);
169  face_vhandles.push_back(vhandle[6]);
170  face_vhandles.push_back(vhandle[5]);
171  mesh_.add_face(face_vhandles);
172 
173  face_vhandles.clear();
174  face_vhandles.push_back(vhandle[7]);
175  face_vhandles.push_back(vhandle[5]);
176  face_vhandles.push_back(vhandle[4]);
177  mesh_.add_face(face_vhandles);
178 
179  //=======================
180 
181  face_vhandles.clear();
182  face_vhandles.push_back(vhandle[1]);
183  face_vhandles.push_back(vhandle[0]);
184  face_vhandles.push_back(vhandle[4]);
185  mesh_.add_face(face_vhandles);
186 
187  face_vhandles.clear();
188  face_vhandles.push_back(vhandle[1]);
189  face_vhandles.push_back(vhandle[4]);
190  face_vhandles.push_back(vhandle[5]);
191  mesh_.add_face(face_vhandles);
192 
193  //=======================
194 
195  face_vhandles.clear();
196  face_vhandles.push_back(vhandle[2]);
197  face_vhandles.push_back(vhandle[1]);
198  face_vhandles.push_back(vhandle[5]);
199  mesh_.add_face(face_vhandles);
200 
201  face_vhandles.clear();
202  face_vhandles.push_back(vhandle[2]);
203  face_vhandles.push_back(vhandle[5]);
204  face_vhandles.push_back(vhandle[6]);
205  mesh_.add_face(face_vhandles);
206 
207 
208  //=======================
209 
210  face_vhandles.clear();
211  face_vhandles.push_back(vhandle[3]);
212  face_vhandles.push_back(vhandle[2]);
213  face_vhandles.push_back(vhandle[6]);
214  mesh_.add_face(face_vhandles);
215 
216  face_vhandles.clear();
217  face_vhandles.push_back(vhandle[3]);
218  face_vhandles.push_back(vhandle[6]);
219  face_vhandles.push_back(vhandle[7]);
220  mesh_.add_face(face_vhandles);
221 
222  //=======================
223 
224  face_vhandles.clear();
225  face_vhandles.push_back(vhandle[0]);
226  face_vhandles.push_back(vhandle[3]);
227  face_vhandles.push_back(vhandle[7]);
228  mesh_.add_face(face_vhandles);
229 
230  face_vhandles.clear();
231  face_vhandles.push_back(vhandle[0]);
232  face_vhandles.push_back(vhandle[7]);
233  face_vhandles.push_back(vhandle[4]);
234  mesh_.add_face(face_vhandles);
235 
236 
237  // Test setup:
238  //
239  //
240  // 3 ======== 2
241  // / /|
242  // / / | z
243  // 0 ======== 1 | |
244  // | | | | y
245  // | 7 | 6 | /
246  // | | / | /
247  // | |/ |/
248  // 4 ======== 5 -------> x
249  //
250 
251  // Check setup
252  EXPECT_EQ(18u, mesh_.n_edges() ) << "Wrong number of Edges";
253  EXPECT_EQ(36u, mesh_.n_halfedges() ) << "Wrong number of HalfEdges";
254  EXPECT_EQ(8u, mesh_.n_vertices() ) << "Wrong number of vertices";
255  EXPECT_EQ(12u, mesh_.n_faces() ) << "Wrong number of faces";
256 
257 
258 }
259 
260 /* Adds a quite strange configuration to the mesh
261  */
262 TEST_F(OpenMeshAddFaceTriangleMesh, CreateStrangeConfig) {
263 
264 
265  Mesh::VertexHandle vh[7];
266 
267  //
268  // 2 x-----------x 1
269  // \ /
270  // \ /
271  // \ /
272  // \ /
273  // \ /
274  // 0 x ---x 6
275  // /|\ |
276  // / | \ |
277  // / | \ |
278  // / | \|
279  // x----x x
280  // 3 4 5
281  //
282  //
283  //
284 
285  // Add vertices
286  vh[0] = mesh_.add_vertex (Mesh::Point (0, 0, 0));
287  vh[1] = mesh_.add_vertex (Mesh::Point (1, 1, 1));
288  vh[2] = mesh_.add_vertex (Mesh::Point (2, 2, 2));
289  vh[3] = mesh_.add_vertex (Mesh::Point (3, 3, 3));
290  vh[4] = mesh_.add_vertex (Mesh::Point (4, 4, 4));
291  vh[5] = mesh_.add_vertex (Mesh::Point (5, 5, 5));
292  vh[6] = mesh_.add_vertex (Mesh::Point (6, 6, 6));
293 
294  mesh_.add_face( vh[0], vh[1], vh[2] );
295  mesh_.add_face( vh[0], vh[3], vh[4] );
296  mesh_.add_face( vh[0], vh[5], vh[6] );
297 
298  // non-manifold!
299  Mesh::FaceHandle invalidFH = mesh_.add_face( vh[3], vh[0], vh[4] );
300 
301  // Check setup
302  EXPECT_EQ(7u, mesh_.n_vertices() ) << "Wrong number of vertices";
303  EXPECT_EQ(3u, mesh_.n_faces() ) << "Wrong number of faces";
304  EXPECT_EQ(invalidFH, Mesh::InvalidFaceHandle ) << "non manifold face is valid";
305 
306 }
307 
308 
309 /* Adds a quad to a polymesh (should be a quad afterwards)
310  */
311 TEST_F(OpenMeshAddFacePolyMesh, AddQuadToPolymesh) {
312 
313  mesh_.clear();
314 
315  // Add some vertices
316  Mesh::VertexHandle vhandle[4];
317 
318  vhandle[0] = mesh_.add_vertex(PolyMesh::Point(0, 0, 0));
319  vhandle[1] = mesh_.add_vertex(PolyMesh::Point(0, 1, 0));
320  vhandle[2] = mesh_.add_vertex(PolyMesh::Point(1, 1, 0));
321  vhandle[3] = mesh_.add_vertex(PolyMesh::Point(1, 0, 0));
322 
323  // Add two faces
324  std::vector<Mesh::VertexHandle> face_vhandles;
325 
326  face_vhandles.push_back(vhandle[0]);
327  face_vhandles.push_back(vhandle[1]);
328  face_vhandles.push_back(vhandle[2]);
329  face_vhandles.push_back(vhandle[3]);
330 
331  mesh_.add_face(face_vhandles);
332 
333  // Test setup:
334  // 1 === 2
335  // | |
336  // | |
337  // | |
338  // 0 === 3
339 
340  // Check setup
341  EXPECT_EQ(4u, mesh_.n_vertices() ) << "Wrong number of vertices";
342  EXPECT_EQ(1u, mesh_.n_faces() ) << "Wrong number of faces";
343 
344 }
345 
346 /* Adds a cube to a polymesh
347  */
348 TEST_F(OpenMeshAddFacePolyMesh, CreatePolyMeshCube) {
349 
350  mesh_.clear();
351 
352  // Add some vertices
353  Mesh::VertexHandle vhandle[8];
354  vhandle[0] = mesh_.add_vertex(PolyMesh::Point(-1, -1, 1));
355  vhandle[1] = mesh_.add_vertex(PolyMesh::Point( 1, -1, 1));
356  vhandle[2] = mesh_.add_vertex(PolyMesh::Point( 1, 1, 1));
357  vhandle[3] = mesh_.add_vertex(PolyMesh::Point(-1, 1, 1));
358  vhandle[4] = mesh_.add_vertex(PolyMesh::Point(-1, -1, -1));
359  vhandle[5] = mesh_.add_vertex(PolyMesh::Point( 1, -1, -1));
360  vhandle[6] = mesh_.add_vertex(PolyMesh::Point( 1, 1, -1));
361  vhandle[7] = mesh_.add_vertex(PolyMesh::Point(-1, 1, -1));
362 
363  // Add six faces to form a cube
364  std::vector<Mesh::VertexHandle> face_vhandles;
365 
366  face_vhandles.clear();
367  face_vhandles.push_back(vhandle[0]);
368  face_vhandles.push_back(vhandle[1]);
369  face_vhandles.push_back(vhandle[2]);
370  face_vhandles.push_back(vhandle[3]);
371  mesh_.add_face(face_vhandles);
372 
373  face_vhandles.clear();
374  face_vhandles.push_back(vhandle[7]);
375  face_vhandles.push_back(vhandle[6]);
376  face_vhandles.push_back(vhandle[5]);
377  face_vhandles.push_back(vhandle[4]);
378  mesh_.add_face(face_vhandles);
379 
380  face_vhandles.clear();
381  face_vhandles.push_back(vhandle[1]);
382  face_vhandles.push_back(vhandle[0]);
383  face_vhandles.push_back(vhandle[4]);
384  face_vhandles.push_back(vhandle[5]);
385  mesh_.add_face(face_vhandles);
386 
387  face_vhandles.clear();
388  face_vhandles.push_back(vhandle[2]);
389  face_vhandles.push_back(vhandle[1]);
390  face_vhandles.push_back(vhandle[5]);
391  face_vhandles.push_back(vhandle[6]);
392  mesh_.add_face(face_vhandles);
393 
394  face_vhandles.clear();
395  face_vhandles.push_back(vhandle[3]);
396  face_vhandles.push_back(vhandle[2]);
397  face_vhandles.push_back(vhandle[6]);
398  face_vhandles.push_back(vhandle[7]);
399  mesh_.add_face(face_vhandles);
400 
401  face_vhandles.clear();
402  face_vhandles.push_back(vhandle[0]);
403  face_vhandles.push_back(vhandle[3]);
404  face_vhandles.push_back(vhandle[7]);
405  face_vhandles.push_back(vhandle[4]);
406  mesh_.add_face(face_vhandles);
407 
408 
409  // Test setup:
410  //
411  //
412  // 3 ======== 2
413  // / /|
414  // / / | z
415  // 0 ======== 1 | |
416  // | | | | y
417  // | 7 | 6 | /
418  // | | / | /
419  // | |/ |/
420  // 4 ======== 5 -------> x
421  //
422 
423  // Check setup
424  EXPECT_EQ(12u, mesh_.n_edges() ) << "Wrong number of Edges";
425  EXPECT_EQ(24u, mesh_.n_halfedges() ) << "Wrong number of HalfEdges";
426  EXPECT_EQ(8u, mesh_.n_vertices() ) << "Wrong number of vertices";
427  EXPECT_EQ(6u, mesh_.n_faces() ) << "Wrong number of faces";
428 
429 }
430 
431 }
OpenMesh::PolyMeshT::VertexHandle
Kernel::VertexHandle VertexHandle
Handle for referencing the corresponding item.
Definition: PolyMeshT.hh:139
OpenMesh::PolyMeshT::add_vertex
VertexHandle add_vertex(const Point &_p)
Alias for new_vertex(const Point&).
Definition: PolyMeshT.hh:236
OpenMesh::PolyMeshT::Point
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:115