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adding cw and ccw circulators

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closes #2406

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@1227 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Matthias Möller
2015-02-23 16:02:40 +00:00
parent 0f9b4c2358
commit eb877fe9da
13 changed files with 1960 additions and 44 deletions
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134
src/Unittests/unittests_trimesh_circulator_vertex_edge.cc
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@@ -280,4 +280,138 @@ TEST_F(OpenMeshTrimeshCirculatorVertexEdge, VertexEdgeIterCheckInvalidationAtEnd
}
/*
* Test CW and CCW iterators
*/
TEST_F(OpenMeshTrimeshCirculatorVertexEdge, CWAndCCWCheck) {
mesh_.clear();
// Add some vertices
Mesh::VertexHandle vhandle[5];
vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
vhandle[1] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
vhandle[2] = mesh_.add_vertex(Mesh::Point(2, 1, 0));
vhandle[3] = mesh_.add_vertex(Mesh::Point(0,-1, 0));
vhandle[4] = mesh_.add_vertex(Mesh::Point(2,-1, 0));
// Add two faces
std::vector<Mesh::VertexHandle> face_vhandles;
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[2]);
Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[3]);
face_vhandles.push_back(vhandle[4]);
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[1]);
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[4]);
mesh_.add_face(face_vhandles);
/* Test setup:
0 ==== 2
|\ 0 /|
| \ / |
|2 1 3|
| / \ |
|/ 1 \|
3 ==== 4 */
int indices[5] = {5, 1, 0, 3, 5};
int rev_indices[5];
std::reverse_copy(indices,indices+5,rev_indices);
//CCW
Mesh::VertexEdgeCCWIter ve_ccwit = mesh_.ve_ccwbegin(vhandle[1]);
Mesh::VertexEdgeCCWIter ve_ccwend = mesh_.ve_ccwend(vhandle[1]);
size_t i = 0;
for (;ve_ccwit != ve_ccwend; ++ve_ccwit, ++i)
{
EXPECT_EQ(indices[i], ve_ccwit->idx()) << "Index wrong in VertexEdgeCCWIter";
}
EXPECT_FALSE(ve_ccwit.is_valid()) << "Iterator invalid in VertexEdgeCCWIter at end";
EXPECT_TRUE( ve_ccwit == ve_ccwend ) << "End iterator for VertexEdgeCCWIter not matching";
//constant CCW
Mesh::ConstVertexEdgeCCWIter cve_ccwit = mesh_.cve_ccwbegin(vhandle[1]);
Mesh::ConstVertexEdgeCCWIter cve_ccwend = mesh_.cve_ccwend(vhandle[1]);
i = 0;
for (;cve_ccwit != cve_ccwend; ++cve_ccwit, ++i)
{
EXPECT_EQ(indices[i], cve_ccwit->idx()) << "Index wrong in ConstVertexEdgeCCWIter";
}
EXPECT_FALSE(cve_ccwit.is_valid()) << "Iterator invalid in ConstVertexEdgeCCWIter at end";
EXPECT_TRUE( cve_ccwit == cve_ccwend ) << "End iterator for ConstVertexEdgeCCWIter not matching";
//CW
Mesh::VertexEdgeCWIter ve_cwit = mesh_.ve_cwbegin(vhandle[1]);
Mesh::VertexEdgeCWIter ve_cwend = mesh_.ve_cwend(vhandle[1]);
i = 0;
for (;ve_cwit != ve_cwend; ++ve_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], ve_cwit->idx()) << "Index wrong in VertexEdgeCWIter";
}
EXPECT_FALSE(ve_cwit.is_valid()) << "Iterator invalid in VertexEdgeCWIter at end";
EXPECT_TRUE( ve_cwit == ve_cwend ) << "End iterator for VertexEdgeCWIter not matching";
//constant CW
Mesh::ConstVertexEdgeCWIter cve_cwit = mesh_.cve_cwbegin(vhandle[1]);
Mesh::ConstVertexEdgeCWIter cve_cwend = mesh_.cve_cwend(vhandle[1]);
i = 0;
for (;cve_cwit != cve_cwend; ++cve_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], cve_cwit->idx()) << "Index wrong in ConstVertexEdgeCWIter";
}
EXPECT_FALSE(cve_cwit.is_valid()) << "Iterator invalid in ConstVertexEdgeCWIter at end";
EXPECT_TRUE( cve_cwit == cve_cwend ) << "End iterator for ConstVertexEdgeCWIter not matching";
/*
* conversion properties:
* a) cw_begin == CWIter(ccw_begin())
* b) cw_iter->idx() == CCWIter(cw_iter)->idx() for valid iterators
* c) --cw_iter == CWIter(++ccwIter) for valid iterators
* d) cw_end == CWIter(ccw_end()) => --cw_end != CWIter(++ccw_end()) *
*/
Mesh::VertexEdgeCWIter ve_cwIter = mesh_.ve_cwbegin(vhandle[1]);
// a)
EXPECT_TRUE( ve_cwIter == Mesh::VertexEdgeCWIter(mesh_.ve_ccwbegin(vhandle[1])) ) << "ccw to cw conversion failed";
EXPECT_TRUE( Mesh::VertexEdgeCCWIter(ve_cwIter) == mesh_.ve_ccwbegin(vhandle[1]) ) << "cw to ccw conversion failed";
// b)
EXPECT_EQ( ve_cwIter->idx(), Mesh::VertexEdgeCCWIter(ve_cwIter)->idx()) << "iterators doesnt point on the same element";
// c)
++ve_cwIter;
ve_ccwend = mesh_.ve_ccwend(vhandle[1]);
--ve_ccwend;
EXPECT_EQ(ve_cwIter->idx(),ve_ccwend->idx()) << "iteratoes are not equal after inc/dec";
// additional conversion check
ve_ccwend = Mesh::VertexEdgeCCWIter(ve_cwIter);
EXPECT_EQ(ve_cwIter->idx(),ve_ccwend->idx())<< "iterators doesnt point on the same element";
// d)
ve_cwIter = Mesh::VertexEdgeCWIter(mesh_.ve_ccwend(vhandle[1]));
EXPECT_FALSE(ve_cwIter.is_valid()) << "end iterator is not invalid";
EXPECT_TRUE(Mesh::VertexEdgeCCWIter(mesh_.ve_cwend(vhandle[1])) == mesh_.ve_ccwend(vhandle[1])) << "end iterators are not equal";
}
}