Added Unittest for modified butterfly
This commit is contained in:
Jan Möbius
@@ -1,6 +1,7 @@
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#include <gtest/gtest.h>
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#include <Unittests/unittests_common.hh>
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#include <OpenMesh/Tools/Subdivider/Uniform/ModifiedButterFlyT.hh>
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#include <OpenMesh/Tools/Subdivider/Uniform/CatmullClarkT.hh>
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#include <OpenMesh/Tools/Subdivider/Uniform/LoopT.hh>
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#include <OpenMesh/Tools/Subdivider/Uniform/Sqrt3T.hh>
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@@ -550,4 +551,226 @@ TEST_F(OpenMeshSubdividerUniform_Poly, Midpoint) {
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EXPECT_EQ(26u, mesh_.n_faces()) << "Wrong number of faces";
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}
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TEST_F(OpenMeshSubdividerUniform_Triangle, Modified_Butterfly) {
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mesh_.clear();
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// Add some vertices
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Mesh::VertexHandle vhandle[9];
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vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
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vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
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vhandle[2] = mesh_.add_vertex(Mesh::Point(0, 2, 0));
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vhandle[3] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
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vhandle[4] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
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vhandle[5] = mesh_.add_vertex(Mesh::Point(1, 2, 0));
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vhandle[6] = mesh_.add_vertex(Mesh::Point(2, 0, 0));
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vhandle[7] = mesh_.add_vertex(Mesh::Point(2, 1, 0));
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vhandle[8] = mesh_.add_vertex(Mesh::Point(2, 2, 0));
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// Add eight faces
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std::vector<Mesh::VertexHandle> face_vhandles;
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face_vhandles.push_back(vhandle[0]);
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[3]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[0]);
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face_vhandles.push_back(vhandle[1]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[1]);
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face_vhandles.push_back(vhandle[2]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[2]);
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face_vhandles.push_back(vhandle[5]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[3]);
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face_vhandles.push_back(vhandle[7]);
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face_vhandles.push_back(vhandle[6]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[3]);
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[7]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[8]);
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face_vhandles.push_back(vhandle[7]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[5]);
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face_vhandles.push_back(vhandle[8]);
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mesh_.add_face(face_vhandles);
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// Test setup:
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// 6 === 7 === 8
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// | / | / |
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// | / | / |
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// | / | / |
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// 3 === 4 === 5
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// | / | \ |
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// | / | \ |
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// | / | \ |
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// 0 === 1 === 2
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// Initialize subdivider
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OpenMesh::Subdivider::Uniform::ModifiedButterflyT<Mesh> butter;
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// Check setup
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EXPECT_EQ(9u, mesh_.n_vertices() ) << "Wrong number of vertices";
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EXPECT_EQ(8u, mesh_.n_faces() ) << "Wrong number of faces";
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// Execute 3 subdivision steps
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butter.attach(mesh_);
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butter( 3 );
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butter.detach();
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// Check setup
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EXPECT_EQ(289u, mesh_.n_vertices() ) << "Wrong number of vertices after subdivision with loop";
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EXPECT_EQ(512u, mesh_.n_faces() ) << "Wrong number of faces after subdivision with loop";
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}
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TEST_F(OpenMeshSubdividerUniform_Triangle, Modified_Butterfly_delete_vertex) {
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mesh_.clear();
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// Request status flags to use delete and garbage collection
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mesh_.request_vertex_status();
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mesh_.request_halfedge_status();
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mesh_.request_edge_status();
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mesh_.request_face_status();
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// Add some vertices
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Mesh::VertexHandle vhandle[9];
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vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
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vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
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vhandle[2] = mesh_.add_vertex(Mesh::Point(0, 2, 0));
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vhandle[3] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
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vhandle[4] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
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vhandle[5] = mesh_.add_vertex(Mesh::Point(1, 2, 0));
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vhandle[6] = mesh_.add_vertex(Mesh::Point(2, 0, 0));
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vhandle[7] = mesh_.add_vertex(Mesh::Point(2, 1, 0));
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vhandle[8] = mesh_.add_vertex(Mesh::Point(2, 2, 0));
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// Add eight faces
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std::vector<Mesh::VertexHandle> face_vhandles;
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face_vhandles.push_back(vhandle[0]);
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[3]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[0]);
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face_vhandles.push_back(vhandle[1]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[1]);
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face_vhandles.push_back(vhandle[2]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[2]);
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face_vhandles.push_back(vhandle[5]);
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face_vhandles.push_back(vhandle[4]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[3]);
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face_vhandles.push_back(vhandle[7]);
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face_vhandles.push_back(vhandle[6]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[3]);
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[7]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[8]);
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face_vhandles.push_back(vhandle[7]);
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mesh_.add_face(face_vhandles);
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face_vhandles.clear();
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face_vhandles.push_back(vhandle[4]);
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face_vhandles.push_back(vhandle[5]);
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face_vhandles.push_back(vhandle[8]);
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mesh_.add_face(face_vhandles);
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// Test setup:
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// 6 === 7 === 8
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// | / | / |
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// | / | / |
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// | / | / |
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// 3 === 4 === 5
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// | / | \ |
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// | / | \ |
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// | / | \ |
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// 0 === 1 === 2
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// Delete one vertex
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mesh_.delete_vertex(vhandle[1]);
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mesh_.garbage_collection();
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// Initialize subdivider
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OpenMesh::Subdivider::Uniform::ModifiedButterflyT<Mesh> butter;
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// Check setup
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EXPECT_EQ(8u, mesh_.n_vertices() ) << "Wrong number of vertices";
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EXPECT_EQ(6u, mesh_.n_faces() ) << "Wrong number of faces";
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// Execute 3 subdivision steps
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butter.attach(mesh_);
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butter( 3 );
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butter.detach();
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// Check setup
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EXPECT_EQ(225u, mesh_.n_vertices() ) << "Wrong number of vertices after subdivision with butter";
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EXPECT_EQ(384u, mesh_.n_faces() ) << "Wrong number of faces after subdivision with butter";
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}
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}
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