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Allow PolyConnectivity::delete_edge to mark an edge as deleted, if there are no faces incident.

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Added unittest.



git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@834 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Jan Möbius
2013-06-05 13:58:32 +00:00
parent c99b3fb5b2
commit 45c5dab747
2 changed files with 273 additions and 0 deletions
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12
src/OpenMesh/Core/Mesh/PolyConnectivity.cc
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@@ -464,6 +464,18 @@ void PolyConnectivity::delete_edge(EdgeHandle _eh, bool _delete_isolated_vertice
if (fh0.is_valid()) delete_face(fh0, _delete_isolated_vertices); if (fh0.is_valid()) delete_face(fh0, _delete_isolated_vertices);
if (fh1.is_valid()) delete_face(fh1, _delete_isolated_vertices); if (fh1.is_valid()) delete_face(fh1, _delete_isolated_vertices);
// mark edge deleted if the mesh has a edge status
if ( has_edge_status() )
status(_eh).set_deleted(true);
// mark corresponding halfedges as deleted
// As the deleted edge is boundary,
// all corresponding halfedges will also be deleted.
if ( has_halfedge_status() ) {
status(halfedge_handle(_eh, 0)).set_deleted(true);
status(halfedge_handle(_eh, 1)).set_deleted(true);
}
} }
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------

261
src/Unittests/unittests_trimesh_iterators.hh
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@@ -427,6 +427,267 @@ TEST_F(OpenMeshIterators, HalfedgeIterSkipping) {
EXPECT_TRUE( ok_5 ) << "Non-skipping iterator missed deleted halfedge 5"; EXPECT_TRUE( ok_5 ) << "Non-skipping iterator missed deleted halfedge 5";
} }
/* Adds a cube to a trimesh and runs over all halfedges
*/
TEST_F(OpenMeshIterators, HalfedgeIterSkippingLowLevel) {
mesh_.clear();
// Add some vertices
Mesh::VertexHandle vhandle[8];
vhandle[0] = mesh_.add_vertex(Mesh::Point(-1, -1, 1));
vhandle[1] = mesh_.add_vertex(Mesh::Point( 1, -1, 1));
vhandle[2] = mesh_.add_vertex(Mesh::Point( 1, 1, 1));
vhandle[3] = mesh_.add_vertex(Mesh::Point(-1, 1, 1));
vhandle[4] = mesh_.add_vertex(Mesh::Point(-1, -1, -1));
vhandle[5] = mesh_.add_vertex(Mesh::Point( 1, -1, -1));
vhandle[6] = mesh_.add_vertex(Mesh::Point( 1, 1, -1));
vhandle[7] = mesh_.add_vertex(Mesh::Point(-1, 1, -1));
// Add six faces to form a cube
std::vector<Mesh::VertexHandle> face_vhandles;
face_vhandles.clear();
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[3]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[3]);
mesh_.add_face(face_vhandles);
//=======================
face_vhandles.clear();
face_vhandles.push_back(vhandle[7]);
face_vhandles.push_back(vhandle[6]);
face_vhandles.push_back(vhandle[5]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[7]);
face_vhandles.push_back(vhandle[5]);
face_vhandles.push_back(vhandle[4]);
mesh_.add_face(face_vhandles);
//=======================
face_vhandles.clear();
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[4]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[4]);
face_vhandles.push_back(vhandle[5]);
mesh_.add_face(face_vhandles);
//=======================
face_vhandles.clear();
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[5]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[5]);
face_vhandles.push_back(vhandle[6]);
mesh_.add_face(face_vhandles);
//=======================
face_vhandles.clear();
face_vhandles.push_back(vhandle[3]);
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[6]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[3]);
face_vhandles.push_back(vhandle[6]);
face_vhandles.push_back(vhandle[7]);
mesh_.add_face(face_vhandles);
//=======================
face_vhandles.clear();
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[3]);
face_vhandles.push_back(vhandle[7]);
mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[7]);
face_vhandles.push_back(vhandle[4]);
mesh_.add_face(face_vhandles);
// Test setup:
//
//
// 3 ======== 2
// / /|
// / / | z
// 0 ======== 1 | |
// | | | | y
// | 7 | 6 | /
// | | / | /
// | |/ |/
// 4 ======== 5 -------> x
//
// Check setup
EXPECT_EQ(18u, mesh_.n_edges() ) << "Wrong number of Edges";
EXPECT_EQ(36u, mesh_.n_halfedges() ) << "Wrong number of HalfEdges";
EXPECT_EQ(8u, mesh_.n_vertices() ) << "Wrong number of vertices";
EXPECT_EQ(12u, mesh_.n_faces() ) << "Wrong number of faces";
// Run over all halfedges
unsigned int heCounter = 0;
mesh_.request_face_status();
mesh_.request_vertex_status();
mesh_.request_halfedge_status();
// Get second edge
Mesh::EdgeHandle eh = mesh_.edge_handle(2);
// Check setup ( No garbage collection, so nothing should change!)
EXPECT_EQ(18u, mesh_.n_edges() ) << "Wrong number of Edges after delete";
EXPECT_EQ(36u, mesh_.n_halfedges() ) << "Wrong number of HalfEdges after delete";
EXPECT_EQ(8u, mesh_.n_vertices() ) << "Wrong number of vertices after delete";
EXPECT_EQ(12u, mesh_.n_faces() ) << "Wrong number of faces after delete";
Mesh::HalfedgeIter he_it = mesh_.halfedges_sbegin();
Mesh::HalfedgeIter he_end = mesh_.halfedges_end();
EXPECT_EQ(0, he_it.handle().idx()) << "Wrong start index in halfedge iterator";
EXPECT_EQ(36, he_end.handle().idx()) << "Wrong end index in halfedge iterator";
// =====================================================
// Try to add low level edge with invalid incidents and
// check skipping iterator
// =====================================================
// Add a low level edge without handles
Mesh::EdgeHandle eh_test = mesh_.edge_handle(mesh_.new_edge(Mesh::VertexHandle(),Mesh::VertexHandle()));
he_it = mesh_.halfedges_sbegin();
he_end = mesh_.halfedges_end();
unsigned int count = 0;
bool found_36 = false;
bool found_37 = false;
while (he_it != he_end) {
if ( he_it.handle().idx() == 36 )
found_36 = true;
if ( he_it.handle().idx() == 37 )
found_37 = true;
++he_it;
++count;
}
EXPECT_EQ(38u,count) << "Skipping iterator count error";
EXPECT_TRUE( found_36 ) << "Skipping iterator missed halfedge 36";
EXPECT_TRUE( found_37 ) << "Skipping iterator missed halfedge 37";
// =====================================================
// Try to delete one edge with valid incidents and
// check skipping iterator
// =====================================================
// delete one edge and recheck (Halfedges 4 and 5)
mesh_.delete_edge(eh);
he_it = mesh_.halfedges_sbegin();
he_end = mesh_.halfedges_end();
count = 0;
bool found_4 = false;
bool found_5 = false;
found_36 = false;
found_37 = false;
while (he_it != he_end) {
if ( he_it.handle().idx() == 4 )
found_4 = true;
if ( he_it.handle().idx() == 5 )
found_5 = true;
if ( he_it.handle().idx() == 36 )
found_36 = true;
if ( he_it.handle().idx() == 37 )
found_37 = true;
++he_it;
++count;
}
EXPECT_EQ(36u,count) << "Deleted valid: Skipping iterator count error";
EXPECT_FALSE( found_4 ) << "Deleted valid: Skipping iterator hit deleted halfedge 4";
EXPECT_FALSE( found_5 ) << "Deleted valid: Skipping iterator hit deleted halfedge 5";
EXPECT_TRUE( found_36 ) << "Deleted valid: Skipping iterator missed halfedge 36";
EXPECT_TRUE( found_37 ) << "Deleted valid: Skipping iterator missed halfedge 37";
// =====================================================
// Try to delete one edge with invalid incidents and
// check skipping iterator
// =====================================================
// delete one edge and recheck (Halfedges 4 and 5)
mesh_.delete_edge(eh_test);
he_it = mesh_.halfedges_sbegin();
he_end = mesh_.halfedges_end();
count = 0;
found_4 = false;
found_5 = false;
found_36 = false;
found_37 = false;
while (he_it != he_end) {
if ( he_it.handle().idx() == 4 )
found_4 = true;
if ( he_it.handle().idx() == 5 )
found_5 = true;
if ( he_it.handle().idx() == 36 )
found_36 = true;
if ( he_it.handle().idx() == 37 )
found_37 = true;
++he_it;
++count;
}
EXPECT_EQ(34u,count) << "Deleted invalid: Skipping iterator count error";
EXPECT_FALSE( found_4 ) << "Deleted invalid: Skipping iterator hit deleted halfedge 4";
EXPECT_FALSE( found_5 ) << "Deleted invalid: Skipping iterator hit deleted halfedge 5";
EXPECT_FALSE( found_36 ) << "Deleted invalid: Skipping iterator hit deleted halfedge 36";
EXPECT_FALSE( found_37 ) << "Deleted invalid: Skipping iterator hit deleted halfedge 37";
}
/* /*
* Test with a mesh with one deleted face * Test with a mesh with one deleted face
*/ */