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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_ihalfedge.cc
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@@ -394,5 +394,139 @@ TEST_F(OpenMeshTrimeshCirculatorVertexIHalfEdge, VertexIHalfEdgeIterCheckInvalid
}
/*
* Test CW and CCW iterators
*/
TEST_F(OpenMeshTrimeshCirculatorVertexIHalfEdge, 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[4] = {14, 5, 2, 14};
int rev_indices[4];
std::reverse_copy(indices,indices+4,rev_indices);
//CCW
Mesh::VertexIHalfedgeCCWIter vih_ccwit = mesh_.vih_ccwbegin(vhandle[2]);
Mesh::VertexIHalfedgeCCWIter vih_ccwend = mesh_.vih_ccwend(vhandle[2]);
size_t i = 0;
for (;vih_ccwit != vih_ccwend; ++vih_ccwit, ++i)
{
EXPECT_EQ(indices[i], vih_ccwit->idx()) << "Index wrong in VertexIHalfedgeCCWIter";
}
EXPECT_FALSE(vih_ccwit.is_valid()) << "Iterator invalid in VertexIHalfedgeCCWIter at end";
EXPECT_TRUE( vih_ccwit == vih_ccwend ) << "End iterator for VertexIHalfedgeCCWIter not matching";
//constant CCW
Mesh::ConstVertexIHalfedgeCCWIter cvih_ccwit = mesh_.cvih_ccwbegin(vhandle[2]);
Mesh::ConstVertexIHalfedgeCCWIter cvih_ccwend = mesh_.cvih_ccwend(vhandle[2]);
i = 0;
for (;cvih_ccwit != cvih_ccwend; ++cvih_ccwit, ++i)
{
EXPECT_EQ(indices[i], cvih_ccwit->idx()) << "Index wrong in ConstVertexIHalfedgeCCWIter";
}
EXPECT_FALSE(cvih_ccwit.is_valid()) << "Iterator invalid in ConstVertexIHalfedgeCCWIter at end";
EXPECT_TRUE( cvih_ccwit == cvih_ccwend ) << "End iterator for ConstVertexIHalfedgeCCWIter not matching";
//CW
Mesh::VertexIHalfedgeCWIter vih_cwit = mesh_.vih_cwbegin(vhandle[2]);
Mesh::VertexIHalfedgeCWIter vih_cwend = mesh_.vih_cwend(vhandle[2]);
i = 0;
for (;vih_cwit != vih_cwend; ++vih_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], vih_cwit->idx()) << "Index wrong in VertexIHalfedgeCWIter";
}
EXPECT_FALSE(vih_cwit.is_valid()) << "Iterator invalid in VertexIHalfedgeCWIter at end";
EXPECT_TRUE( vih_cwit == vih_cwend ) << "End iterator for VertexIHalfedgeCWIter not matching";
//constant CW
Mesh::ConstVertexIHalfedgeCWIter cvih_cwit = mesh_.cvih_cwbegin(vhandle[2]);
Mesh::ConstVertexIHalfedgeCWIter cvih_cwend = mesh_.cvih_cwend(vhandle[2]);
i = 0;
for (;cvih_cwit != cvih_cwend; ++cvih_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], cvih_cwit->idx()) << "Index wrong in ConstVertexIHalfedgeCWIter";
}
EXPECT_FALSE(cvih_cwit.is_valid()) << "Iterator invalid in ConstVertexIHalfedgeCWIter at end";
EXPECT_TRUE( cvih_cwit == cvih_cwend ) << "End iterator for ConstVertexIHalfedgeCWIter 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::VertexIHalfedgeCWIter vih_cwIter = mesh_.vih_cwbegin(vhandle[2]);
// a)
EXPECT_TRUE( vih_cwIter == Mesh::VertexIHalfedgeCWIter(mesh_.vih_ccwbegin(vhandle[2])) ) << "ccw to cw conversion failed";
EXPECT_TRUE( Mesh::VertexIHalfedgeCCWIter(vih_cwIter) == mesh_.vih_ccwbegin(vhandle[2]) ) << "cw to ccw conversion failed";
// b)
EXPECT_EQ( vih_cwIter->idx(), Mesh::VertexIHalfedgeCCWIter(vih_cwIter)->idx()) << "iterators doesnt point on the same element";
// c)
++vih_cwIter;
vih_ccwend = mesh_.vih_ccwend(vhandle[2]);
--vih_ccwend;
EXPECT_EQ(vih_cwIter->idx(),vih_ccwend->idx()) << "iteratoes are not equal after inc/dec";
// additional conversion check
vih_ccwend = Mesh::VertexIHalfedgeCCWIter(vih_cwIter);
EXPECT_EQ(vih_cwIter->idx(),vih_ccwend->idx())<< "iterators doesnt point on the same element";
// d)
vih_cwIter = Mesh::VertexIHalfedgeCWIter(mesh_.vih_ccwend(vhandle[2]));
EXPECT_FALSE(vih_cwIter.is_valid()) << "end iterator is not invalid";
EXPECT_TRUE(Mesh::VertexIHalfedgeCCWIter(mesh_.vih_cwend(vhandle[2])) == mesh_.vih_ccwend(vhandle[2])) << "end iterators are not equal";
}
}