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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_face_vertex.cc
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@@ -206,5 +206,139 @@ TEST_F(OpenMeshTrimeshCirculatorFaceVertex, FaceVertexIterCheckInvalidationAtEnd
}
/*
* Test CW and CCW iterators
*/
TEST_F(OpenMeshTrimeshCirculatorFaceVertex, 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] = {0, 1, 2, 0};
int rev_indices[4];
std::reverse_copy(indices,indices+4,rev_indices);
//CCW
Mesh::FaceVertexCCWIter fv_ccwit = mesh_.fv_ccwbegin(fh0);
Mesh::FaceVertexCCWIter fv_ccwend = mesh_.fv_ccwend(fh0);
size_t i = 0;
for (;fv_ccwit != fv_ccwend; ++fv_ccwit, ++i)
{
EXPECT_EQ(indices[i], fv_ccwit->idx()) << "Index wrong in FaceVertexCCWIter";
}
EXPECT_FALSE(fv_ccwit.is_valid()) << "Iterator invalid in FaceVertexCCWIter at end";
EXPECT_TRUE( fv_ccwit == fv_ccwend ) << "End iterator for FaceVertexCCWIter not matching";
//constant CCW
Mesh::ConstFaceVertexCCWIter cfv_ccwit = mesh_.cfv_ccwbegin(fh0);
Mesh::ConstFaceVertexCCWIter cfv_ccwend = mesh_.cfv_ccwend(fh0);
i = 0;
for (;cfv_ccwit != cfv_ccwend; ++cfv_ccwit, ++i)
{
EXPECT_EQ(indices[i], cfv_ccwit->idx()) << "Index wrong in ConstFaceVertexCCWIter";
}
EXPECT_FALSE(cfv_ccwit.is_valid()) << "Iterator invalid in ConstFaceVertexCCWIter at end";
EXPECT_TRUE( cfv_ccwit == cfv_ccwend ) << "End iterator for ConstFaceVertexCCWIter not matching";
//CW
Mesh::FaceVertexCWIter fv_cwit = mesh_.fv_cwbegin(fh0);
Mesh::FaceVertexCWIter fv_cwend = mesh_.fv_cwend(fh0);
i = 0;
for (;fv_cwit != fv_cwend; ++fv_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], fv_cwit->idx()) << "Index wrong in FaceVertexCWIter";
}
EXPECT_FALSE(fv_cwit.is_valid()) << "Iterator invalid in FaceVertexCWIter at end";
EXPECT_TRUE( fv_cwit == fv_cwend ) << "End iterator for FaceVertexCWIter not matching";
//constant CW
Mesh::ConstFaceVertexCWIter cfv_cwit = mesh_.cfv_cwbegin(fh0);
Mesh::ConstFaceVertexCWIter cfv_cwend = mesh_.cfv_cwend(fh0);
i = 0;
for (;cfv_cwit != cfv_cwend; ++cfv_cwit, ++i)
{
EXPECT_EQ(rev_indices[i], cfv_cwit->idx()) << "Index wrong in ConstFaceVertexCWIter";
}
EXPECT_FALSE(cfv_cwit.is_valid()) << "Iterator invalid in ConstFaceVertexCWIter at end";
EXPECT_TRUE( cfv_cwit == cfv_cwend ) << "End iterator for ConstFaceVertexCWIter 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::FaceVertexCWIter fv_cwIter = mesh_.fv_cwbegin(mesh_.face_handle(1));
// a)
EXPECT_TRUE( fv_cwIter == Mesh::FaceVertexCWIter(mesh_.fv_ccwbegin(mesh_.face_handle(1))) ) << "ccw to cw conversion failed";
EXPECT_TRUE( Mesh::FaceVertexCCWIter(fv_cwIter) == mesh_.fv_ccwbegin(mesh_.face_handle(1)) ) << "cw to ccw conversion failed";
// b)
EXPECT_EQ( fv_cwIter->idx(), Mesh::FaceVertexCCWIter(fv_cwIter)->idx()) << "iterators doesnt point on the same element";
// c)
++fv_cwIter;
fv_ccwend = mesh_.fv_ccwend(mesh_.face_handle(1));
--fv_ccwend;
EXPECT_EQ(fv_cwIter->idx(),fv_ccwend->idx()) << "iteratoes are not equal after inc/dec";
// additional conversion check
fv_ccwend = Mesh::FaceVertexCCWIter(fv_cwIter);
EXPECT_EQ(fv_cwIter->idx(),fv_ccwend->idx())<< "iterators doesnt point on the same element";
// d)
fv_cwIter = Mesh::FaceVertexCWIter(mesh_.fv_ccwend(mesh_.face_handle(1)));
EXPECT_FALSE(fv_cwIter.is_valid()) << "end iterator is not invalid";
EXPECT_TRUE(Mesh::FaceVertexCCWIter(mesh_.fv_cwend(mesh_.face_handle(1))) == mesh_.fv_ccwend(mesh_.face_handle(1))) << "end iterators are not equal";
}
}