Developer Documentation
unittests_trimesh_others.cc
1 #include <gtest/gtest.h>
2 #include <Unittests/unittests_common.hh>
3 
4 #include <iostream>
5 
6 namespace {
7 
8 class OpenMeshOthers : public OpenMeshBase {
9 
10  protected:
11 
12  // This function is called before each test is run
13  virtual void SetUp() {
14  }
15 
16  // This function is called after all tests are through
17  virtual void TearDown() {
18 
19  // Do some final stuff with the member data here...
20  }
21 
22  // Member already defined in OpenMeshBase
23  //Mesh mesh_;
24 };
25 
26 /*
27  * ====================================================================
28  * Define tests below
29  * ====================================================================
30  */
31 
32 /*
33  * Checking for feature edges based on angle
34  */
35 TEST_F(OpenMeshOthers, IsEstimatedFeatureEdge) {
36 
37  mesh_.clear();
38 
39  // Add some vertices
40  Mesh::VertexHandle vhandle[4];
41 
42  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
43  vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
44  vhandle[2] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
45  vhandle[3] = mesh_.add_vertex(Mesh::Point(0, 0, 1));
46 
47  // Add four faces
48  std::vector<Mesh::VertexHandle> face_vhandles;
49 
50  face_vhandles.push_back(vhandle[0]);
51  face_vhandles.push_back(vhandle[1]);
52  face_vhandles.push_back(vhandle[2]);
53  mesh_.add_face(face_vhandles);
54 
55  face_vhandles.clear();
56 
57  face_vhandles.push_back(vhandle[0]);
58  face_vhandles.push_back(vhandle[2]);
59  face_vhandles.push_back(vhandle[3]);
60  mesh_.add_face(face_vhandles);
61 
62  face_vhandles.clear();
63 
64  face_vhandles.push_back(vhandle[2]);
65  face_vhandles.push_back(vhandle[1]);
66  face_vhandles.push_back(vhandle[3]);
67  mesh_.add_face(face_vhandles);
68 
69  face_vhandles.clear();
70 
71  face_vhandles.push_back(vhandle[3]);
72  face_vhandles.push_back(vhandle[1]);
73  face_vhandles.push_back(vhandle[0]);
74  mesh_.add_face(face_vhandles);
75 
76  // ===============================================
77  // Setup complete
78  // ===============================================
79 
80 
81  // Check one Request only vertex normals
82  // Face normals are required for vertex and halfedge normals, so
83  // that prevent access to non existing properties are in place
84 
85  mesh_.request_vertex_normals();
86  mesh_.request_halfedge_normals();
87  mesh_.request_face_normals();
88 
89  // Automatically compute all normals
90  // As only vertex normals are requested and no face normals, this will compute nothing.
91  mesh_.update_normals();
92 
93  Mesh::HalfedgeIter he_it = mesh_.halfedges_begin();
94 
95  EXPECT_TRUE(mesh_.is_estimated_feature_edge(*he_it,0.0)) << "Wrong feature edge detection 0.0";
96 
97  EXPECT_TRUE(mesh_.is_estimated_feature_edge(*he_it,0.125 * M_PI)) << "Wrong feature edge detection 0.125";
98 
99  EXPECT_TRUE(mesh_.is_estimated_feature_edge(*he_it,0.25 * M_PI)) << "Wrong feature edge detection 0.25";
100 
101  EXPECT_TRUE(mesh_.is_estimated_feature_edge(*he_it,0.375 * M_PI)) << "Wrong feature edge detection 0.375";
102 
103  EXPECT_TRUE(mesh_.is_estimated_feature_edge(*he_it,0.5 * M_PI)) << "Wrong feature edge detection 0.5";
104 
105  EXPECT_FALSE(mesh_.is_estimated_feature_edge(*he_it,0.625 * M_PI))<< "Wrong feature edge detection 0.625";
106 
107  EXPECT_FALSE(mesh_.is_estimated_feature_edge(*he_it,0.75 * M_PI)) << "Wrong feature edge detection 0.75";
108 
109  EXPECT_FALSE(mesh_.is_estimated_feature_edge(*he_it,0.875 * M_PI))<< "Wrong feature edge detection 0.875";
110 
111  EXPECT_FALSE(mesh_.is_estimated_feature_edge(*he_it,1.0 * M_PI)) << "Wrong feature edge detection 1.0";
112 
113 }
114 
115 /*
116  * Checking for feature edges based on angle
117  */
118 TEST_F(OpenMeshOthers, CalcDihedralAngre ) {
119 
120  mesh_.clear();
121 
122  /* Test setup:
123  *
124  * 1 -- 2
125  * | / |
126  * | / |
127  * 0 -- 3
128  */
129 
130  // Add some vertices
131  Mesh::VertexHandle vhandle[4];
132 
133  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
134  vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
135  vhandle[2] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
136  vhandle[3] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
137 
138  // Add four faces
139  std::vector<Mesh::VertexHandle> face_vhandles;
140 
141  face_vhandles.push_back(vhandle[0]);
142  face_vhandles.push_back(vhandle[1]);
143  face_vhandles.push_back(vhandle[2]);
144  mesh_.add_face(face_vhandles);
145 
146  face_vhandles.clear();
147 
148  face_vhandles.push_back(vhandle[0]);
149  face_vhandles.push_back(vhandle[2]);
150  face_vhandles.push_back(vhandle[3]);
151  mesh_.add_face(face_vhandles);
152 
153  // ===============================================
154  // Setup complete
155  // ===============================================
156 
157  Mesh::HalfedgeHandle he = mesh_.halfedge_handle(4);
158 
159  EXPECT_EQ( 0 , mesh_.to_vertex_handle(he).idx() ) << "Wrong halfedge!" << std::endl;
160  EXPECT_EQ( 2 , mesh_.from_vertex_handle(he).idx() ) << "Wrong halfedge!" << std::endl;
161  EXPECT_EQ( 2 , mesh_.edge_handle(he).idx() ) << "Wrong Edge!" << std::endl;
162 
163  Mesh::EdgeHandle eh = mesh_.edge_handle(he);
164  EXPECT_EQ( 0.0 , mesh_.calc_dihedral_angle(eh) ) << "Wrong Dihedral angle!" << std::endl;
165 
166  // Modify point
167  Mesh::Point tmp = ( Mesh::Point(0.0, 0.0, -1.0) + Mesh::Point(1.0, 1.0, -1.0) ) * 0.5;
168  mesh_.point(vhandle[2]) = tmp;
169 
170  double difference = fabs( 1.36944 - mesh_.calc_dihedral_angle(eh) );
171 
172  EXPECT_LT(difference, 0.00001) << "Wrong Dihedral angle, Difference is to big!" << std::endl;
173 
174 }
175 }
void update_normals()
Compute normals for all primitives.
Definition: PolyMeshT.cc:241
bool is_estimated_feature_edge(HalfedgeHandle _heh, const double _feature_angle) const
Definition: PolyMeshT.cc:342
Kernel::VertexHandle VertexHandle
Handle for referencing the corresponding item.
Definition: PolyMeshT.hh:139
VertexHandle add_vertex(const Point &_p)
Alias for new_vertex(const Point&).
Definition: PolyMeshT.hh:236
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:115