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More documentation for the is_boundary functions

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Unittest for is_boundary (Vertices, faces)

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@770 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Jan Möbius
2012-11-27 11:19:22 +00:00
parent 0ef541d266
commit 824ee5db29
3 changed files with 243 additions and 9 deletions
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58
src/OpenMesh/Core/Mesh/PolyConnectivity.hh
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@@ -582,32 +582,71 @@ public:
/** \name Boundary and manifold tests
*/
//@{
/** \brief Check if the halfedge is at the boundary
*
* The halfedge is at the boundary, if no face is incident to it.
*
* @param _heh HalfedgeHandle to test
* @return boundary?
*/
bool is_boundary(HalfedgeHandle _heh) const
{ return ArrayKernel::is_boundary(_heh); }
/** Is the edge _eh a boundary edge, i.e. is one of its halfedges
a boundary halfege ? */
/** \brief Is the edge a boundary edge?
*
* Checks it the edge _eh is a boundary edge, i.e. is one of its halfedges
* is a boundary halfedge.
*
* @param _eh Edge handle to test
* @return boundary?
*/
bool is_boundary(EdgeHandle _eh) const
{
return (is_boundary(halfedge_handle(_eh, 0)) ||
is_boundary(halfedge_handle(_eh, 1)));
}
/// Is vertex _vh a boundary vertex ?
/** \brief Is vertex _vh a boundary vertex ?
*
* Checks if the associated halfedge (which would on a boundary be the outside
* halfedge), is connected to a face. Which is equivalent, if the vertex is
* at the boundary of the mesh, as OpenMesh will make sure, that if there is a
* boundary halfedge at the vertex, the halfedge will be the one which is associated
* to the vertex.
*
* @param _vh VertexHandle to test
* @return boundary?
*/
bool is_boundary(VertexHandle _vh) const
{
HalfedgeHandle heh(halfedge_handle(_vh));
return (!(heh.is_valid() && face_handle(heh).is_valid()));
}
/** Is face _fh at boundary, i.e. is one of its edges (or vertices)
* a boundary edge?
* \param _fh Check this face
* \param _check_vertex If \c true, check the corner vertices of
* the face, too.
/** \brief Check if face is at the boundary
*
* Is face _fh at boundary, i.e. is one of its edges (or vertices)
* a boundary edge?
*
* @param _fh Check this face
* @param _check_vertex If \c true, check the corner vertices of the face, too.
* @return boundary?
*/
bool is_boundary(FaceHandle _fh, bool _check_vertex=false) const;
/// Is (the mesh at) vertex _vh two-manifold ?
/** \brief Is (the mesh at) vertex _vh two-manifold ?
*
* The vertex is non-manifold if more than one gap exists, i.e.
* more than one outgoing boundary halfedge. If (at least) one
* boundary halfedge exists, the vertex' halfedge must be a
* boundary halfedge.
*
* @param _vh VertexHandle to test
* @return manifold?
*/
bool is_manifold(VertexHandle _vh) const;
//@}
// --- shortcuts ---
@@ -622,6 +661,7 @@ public:
boundary halfedge whenever possible.
*/
void adjust_outgoing_halfedge(VertexHandle _vh);
/// Find halfedge from _vh0 to _vh1. Returns invalid handle if not found.
HalfedgeHandle find_halfedge(VertexHandle _start_vh, VertexHandle _end_vh) const;
/// Vertex valence

1
src/Unittests/unittests.cc
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@@ -19,6 +19,7 @@
#include "unittests_randomNumberGenerator.hh"
#include "unittests_split_copy.hh"
#include "unittests_vector_type.hh"
#include "unittests_boundary.hh"
int main(int _argc, char** _argv) {

193
src/Unittests/unittests_boundary.hh Normal file
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@@ -0,0 +1,193 @@
#ifndef INCLUDE_UNITTESTS_BOUNDARY_HH
#define INCLUDE_UNITTESTS_BOUNDARY_HH
#include <gtest/gtest.h>
#include <Unittests/unittests_common.hh>
#include <iostream>
class OpenMeshBoundaryTriangleMesh : public OpenMeshBase {
protected:
// This function is called before each test is run
virtual void SetUp() {
// Do some initial stuff with the member data here...
}
// This function is called after all tests are through
virtual void TearDown() {
// Do some final stuff with the member data here...
}
// Member already defined in OpenMeshBase
//Mesh mesh_;
};
/*
* ====================================================================
* Define tests below
* ====================================================================
*/
/* Checks vertices, if they are boundary vertices
*/
TEST_F(OpenMeshBoundaryTriangleMesh, TestBoundaryVertex) {
mesh_.clear();
// Add some vertices
Mesh::VertexHandle vhandle[7];
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));
vhandle[5] = mesh_.add_vertex(Mesh::Point(3, 0, 0));
// Single point
vhandle[6] = mesh_.add_vertex(Mesh::Point(0,-2, 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_.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);
face_vhandles.clear();
face_vhandles.push_back(vhandle[5]);
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[4]);
mesh_.add_face(face_vhandles);
/* Test setup:
0 ==== 2
|\ 0 /|\
| \ / | \
|2 1 3|4 5
| / \ | /
|/ 1 \|/
3 ==== 4
Vertex 6 single
*/
// Check for boundary vertices
EXPECT_TRUE ( mesh_.is_boundary( vhandle[0] ) ) << "Vertex 0 is not boundary!";
EXPECT_FALSE( mesh_.is_boundary( vhandle[1] ) ) << "Vertex 1 is boundary!";
EXPECT_TRUE ( mesh_.is_boundary( vhandle[2] ) ) << "Vertex 2 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( vhandle[3] ) ) << "Vertex 3 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( vhandle[4] ) ) << "Vertex 4 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( vhandle[5] ) ) << "Vertex 5 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( vhandle[6] ) ) << "Singular Vertex 6 is not boundary!";
}
/* Checks faces, if they are boundary faces
*/
TEST_F(OpenMeshBoundaryTriangleMesh, TestBoundaryFace) {
mesh_.clear();
// Add some vertices
Mesh::VertexHandle vhandle[7];
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));
vhandle[5] = mesh_.add_vertex(Mesh::Point(3, 0, 0));
// Single point
vhandle[6] = mesh_.add_vertex(Mesh::Point(0,-2, 0));
// Add two faces
std::vector<Mesh::VertexHandle> face_vhandles;
std::vector<Mesh::FaceHandle> face_handles;
face_vhandles.push_back(vhandle[0]);
face_vhandles.push_back(vhandle[1]);
face_vhandles.push_back(vhandle[2]);
face_handles.push_back(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]);
face_handles.push_back(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]);
face_handles.push_back(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]);
face_handles.push_back(mesh_.add_face(face_vhandles));
face_vhandles.clear();
face_vhandles.push_back(vhandle[5]);
face_vhandles.push_back(vhandle[2]);
face_vhandles.push_back(vhandle[4]);
face_handles.push_back(mesh_.add_face(face_vhandles));
/* Test setup:
0 ==== 2
|\ 0 /|\
| \ / | \
|2 1 3|4 5
| / \ | /
|/ 1 \|/
3 ==== 4
Vertex 6 single
*/
// Check the boundary faces
EXPECT_TRUE ( mesh_.is_boundary( face_handles[0] ) ) << "Face 0 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( face_handles[1] ) ) << "Face 1 is not boundary!";
EXPECT_TRUE ( mesh_.is_boundary( face_handles[2] ) ) << "Face 2 is not boundary!";
EXPECT_FALSE( mesh_.is_boundary( face_handles[3] ) ) << "Face 3 is boundary!";
EXPECT_TRUE ( mesh_.is_boundary( face_handles[4] ) ) << "Face 4 is not boundary!";
}
#endif // INCLUDE GUARD