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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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135
src/Unittests/unittests_trimesh_circulator_vertex_face.cc
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@@ -451,4 +451,139 @@ TEST_F(OpenMeshTrimeshCirculatorVertexFace, VertexFaceIterWithoutHolesDecrement)
}
/*
* Test CW and CCW iterators
*/
TEST_F(OpenMeshTrimeshCirculatorVertexFace, 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] = {3, 0, 2, 1, 3};
int rev_indices[5];
std::reverse_copy(indices,indices+5,rev_indices);
//CCW
Mesh::VertexFaceCCWIter vf_ccwit = mesh_.vf_ccwbegin(vhandle[1]);
Mesh::VertexFaceCCWIter vf_ccwend = mesh_.vf_ccwend(vhandle[1]);
size_t i = 0;
for (;vf_ccwit != vf_ccwend; ++vf_ccwit, ++i)
{
EXPECT_EQ(indices[i], vf_ccwit->idx()) << "Index wrong in VertexFaceCCWIter";
}
EXPECT_FALSE(vf_ccwit.is_valid()) << "Iterator invalid in VertexFaceCCWIter at end";
EXPECT_TRUE( vf_ccwit == vf_ccwend ) << "End iterator for VertexFaceCCWIter not matching";
//constant CCW
Mesh::ConstVertexFaceCCWIter cvf_ccwit = mesh_.cvf_ccwbegin(vhandle[1]);
Mesh::ConstVertexFaceCCWIter cvf_ccwend = mesh_.cvf_ccwend(vhandle[1]);
i = 0;
for (;cvf_ccwit != cvf_ccwend; ++cvf_ccwit, ++i)
{
EXPECT_EQ(indices[i], cvf_ccwit->idx()) << "Index wrong in ConstVertexFaceCCWIter";
}
EXPECT_FALSE(cvf_ccwit.is_valid()) << "Iterator invalid in ConstVertexFaceCCWIter at end";
EXPECT_TRUE( cvf_ccwit == cvf_ccwend ) << "End iterator for ConstVertexFaceCCWIter not matching";
//CW
Mesh::VertexFaceCWIter vf_cwit = mesh_.vf_cwbegin(vhandle[1]);
Mesh::VertexFaceCWIter vf_cwend = mesh_.vf_cwend(vhandle[1]);
i = 0;
for (;vf_cwit != vf_cwend; ++vf_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], vf_cwit->idx()) << "Index wrong in VertexFaceCWIter";
}
EXPECT_FALSE(vf_cwit.is_valid()) << "Iterator invalid in VertexFaceCWIter at end";
EXPECT_TRUE( vf_cwit == vf_cwend ) << "End iterator for VertexFaceCWIter not matching";
//constant CW
Mesh::ConstVertexFaceCWIter cvf_cwit = mesh_.cvf_cwbegin(vhandle[1]);
Mesh::ConstVertexFaceCWIter cvf_cwend = mesh_.cvf_cwend(vhandle[1]);
i = 0;
for (;cvf_cwit != cvf_cwend; ++cvf_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], cvf_cwit->idx()) << "Index wrong in ConstVertexFaceCWIter";
}
EXPECT_FALSE(cvf_cwit.is_valid()) << "Iterator invalid in ConstVertexFaceCWIter at end";
EXPECT_TRUE( cvf_cwit == cvf_cwend ) << "End iterator for ConstVertexFaceCWIter 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::VertexFaceCWIter vf_cwIter = mesh_.vf_cwbegin(vhandle[1]);
// a)
EXPECT_TRUE( vf_cwIter == Mesh::VertexFaceCWIter(mesh_.vf_ccwbegin(vhandle[1])) ) << "ccw to cw conversion failed";
EXPECT_TRUE( Mesh::VertexFaceCCWIter(vf_cwIter) == mesh_.vf_ccwbegin(vhandle[1]) ) << "cw to ccw conversion failed";
// b)
EXPECT_EQ( vf_cwIter->idx(), Mesh::VertexFaceCCWIter(vf_cwIter)->idx()) << "iterators doesnt point on the same element";
// c)
++vf_cwIter;
vf_ccwend = mesh_.vf_ccwend(vhandle[1]);
--vf_ccwend;
EXPECT_EQ(vf_cwIter->idx(),vf_ccwend->idx()) << "iteratoes are not equal after inc/dec";
// additional conversion check
vf_ccwend = Mesh::VertexFaceCCWIter(vf_cwIter);
EXPECT_EQ(vf_cwIter->idx(),vf_ccwend->idx())<< "iterators doesnt point on the same element";
// d)
vf_cwIter = Mesh::VertexFaceCWIter(mesh_.vf_ccwend(vhandle[1]));
EXPECT_FALSE(vf_cwIter.is_valid()) << "end iterator is not invalid";
EXPECT_TRUE(Mesh::VertexFaceCCWIter(mesh_.vf_cwend(vhandle[1])) == mesh_.vf_ccwend(vhandle[1])) << "end iterators are not equal";
}
}