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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_ohalfedge.cc
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@@ -394,6 +394,141 @@ TEST_F(OpenMeshTrimeshCirculatorVertexOHalfEdge, VertexOHalfEdgeIterCheckInvalid
}
/*
* Test CW and CCW iterators
*/
TEST_F(OpenMeshTrimeshCirculatorVertexOHalfEdge, 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] = {11, 2, 1, 6, 11};
int rev_indices[5];
std::reverse_copy(indices,indices+5,rev_indices);
//CCW
Mesh::VertexOHalfedgeCCWIter voh_ccwit = mesh_.voh_ccwbegin(vhandle[1]);
Mesh::VertexOHalfedgeCCWIter voh_ccwend = mesh_.voh_ccwend(vhandle[1]);
size_t i = 0;
for (;voh_ccwit != voh_ccwend; ++voh_ccwit, ++i)
{
EXPECT_EQ(indices[i], voh_ccwit->idx()) << "Index wrong in VertexOHalfedgeCCWIter";
}
EXPECT_FALSE(voh_ccwit.is_valid()) << "Iterator invalid in VertexOHalfedgeCCWIter at end";
EXPECT_TRUE( voh_ccwit == voh_ccwend ) << "End iterator for VertexOHalfedgeCCWIter not matching";
//constant CCW
Mesh::ConstVertexOHalfedgeCCWIter cvoh_ccwit = mesh_.cvoh_ccwbegin(vhandle[1]);
Mesh::ConstVertexOHalfedgeCCWIter cvoh_ccwend = mesh_.cvoh_ccwend(vhandle[1]);
i = 0;
for (;cvoh_ccwit != cvoh_ccwend; ++cvoh_ccwit, ++i)
{
EXPECT_EQ(indices[i], cvoh_ccwit->idx()) << "Index wrong in ConstVertexOHalfedgeCCWIter";
}
EXPECT_FALSE(cvoh_ccwit.is_valid()) << "Iterator invalid in ConstVertexOHalfedgeCCWIter at end";
EXPECT_TRUE( cvoh_ccwit == cvoh_ccwend ) << "End iterator for ConstVertexOHalfedgeCCWIter not matching";
//CW
Mesh::VertexOHalfedgeCWIter voh_cwit = mesh_.voh_cwbegin(vhandle[1]);
Mesh::VertexOHalfedgeCWIter voh_cwend = mesh_.voh_cwend(vhandle[1]);
i = 0;
for (;voh_cwit != voh_cwend; ++voh_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], voh_cwit->idx()) << "Index wrong in VertexOHalfedgeCWIter";
}
EXPECT_FALSE(voh_cwit.is_valid()) << "Iterator invalid in VertexOHalfedgeCWIter at end";
EXPECT_TRUE( voh_cwit == voh_cwend ) << "End iterator for VertexOHalfedgeCWIter not matching";
//constant CW
Mesh::ConstVertexOHalfedgeCWIter cvoh_cwit = mesh_.cvoh_cwbegin(vhandle[1]);
Mesh::ConstVertexOHalfedgeCWIter cvoh_cwend = mesh_.cvoh_cwend(vhandle[1]);
i = 0;
for (;cvoh_cwit != cvoh_cwend; ++cvoh_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], cvoh_cwit->idx()) << "Index wrong in ConstVertexOHalfedgeCWIter";
}
EXPECT_FALSE(cvoh_cwit.is_valid()) << "Iterator invalid in ConstVertexOHalfedgeCWIter at end";
EXPECT_TRUE( cvoh_cwit == cvoh_cwend ) << "End iterator for ConstVertexOHalfedgeCWIter 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::VertexOHalfedgeCWIter voh_cwIter = mesh_.voh_cwbegin(vhandle[1]);
// a)
EXPECT_TRUE( voh_cwIter == Mesh::VertexOHalfedgeCWIter(mesh_.voh_ccwbegin(vhandle[1])) ) << "ccw to cw conversion failed";
EXPECT_TRUE( Mesh::VertexOHalfedgeCCWIter(voh_cwIter) == mesh_.voh_ccwbegin(vhandle[1]) ) << "cw to ccw conversion failed";
// b)
EXPECT_EQ( voh_cwIter->idx(), Mesh::VertexOHalfedgeCCWIter(voh_cwIter)->idx()) << "iterators doesnt point on the same element";
// c)
++voh_cwIter;
voh_ccwend = mesh_.voh_ccwend(vhandle[1]);
--voh_ccwend;
EXPECT_EQ(voh_cwIter->idx(),voh_ccwend->idx()) << "iteratoes are not equal after inc/dec";
// additional conversion check
voh_ccwend = Mesh::VertexOHalfedgeCCWIter(voh_cwIter);
EXPECT_EQ(voh_cwIter->idx(),voh_ccwend->idx())<< "iterators doesnt point on the same element";
// d)
voh_cwIter = Mesh::VertexOHalfedgeCWIter(mesh_.voh_ccwend(vhandle[1]));
EXPECT_FALSE(voh_cwIter.is_valid()) << "end iterator is not invalid";
EXPECT_TRUE(Mesh::VertexOHalfedgeCCWIter(mesh_.voh_cwend(vhandle[1])) == mesh_.voh_ccwend(vhandle[1])) << "end iterators are not equal";
}
}