ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Core/QuadEdgeMesh/ExtractVertexOnMeshBoundaries/Code.cxx
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
int
main(int argc, char * argv[])
{
if (argc != 2)
{
std::cerr << "Usage: " << argv[0] << " <InputFileName>" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 3;
using CoordType = double;
using VTKReaderType = itk::VTKPolyDataReader<MeshType>;
VTKReaderType::Pointer reader = VTKReaderType::New();
reader->SetFileName(argv[1]);
try
{
reader->Update();
}
catch (itk::ExceptionObject & e)
{
std::cerr << e.what() << std::endl;
return EXIT_FAILURE;
}
MeshType::Pointer mesh = reader->GetOutput();
BoundaryExtractorType::Pointer extractor = BoundaryExtractorType::New();
using MeshPointIdentifier = MeshType::PointIdentifier;
using MeshQEType = MeshType::QEType;
using MeshIteratorGeom = MeshQEType::IteratorGeom;
using EdgeListType = MeshType::EdgeListType;
using EdgeListPointer = MeshType::EdgeListPointerType;
using EdgeListIterator = EdgeListType::iterator;
EdgeListPointer list = extractor->Evaluate(*mesh);
if (list->empty())
{
std::cerr << "There is no border on this mesh" << std::endl;
return EXIT_FAILURE;
}
std::cout << "There are " << list->size() << " borders on this mesh" << std::endl;
auto it = list->begin();
const EdgeListIterator end = list->end();
size_t i = 0;
while (it != end)
{
std::cout << i << ": ";
MeshIteratorGeom eIt = (*it)->BeginGeomLnext();
const MeshIteratorGeom eEnd = (*it)->EndGeomLnext();
MeshPointIdentifier id = MeshType::m_NoPoint;
while (eIt != eEnd)
{
MeshQEType * qe = eIt.Value();
if (qe->GetOrigin() != id)
{
std::cout << qe->GetOrigin();
}
id = qe->GetDestination();
std::cout << " -> " << id;
++eIt;
}
std::cout << std::endl;
++it;
}
return EXIT_SUCCESS;
}
itk::QuadEdgeMeshBoundaryEdgesMeshFunction
Build a list of references to edges (as GeometricalQuadEdge::RawPointer) each one representing a diff...
Definition: itkQuadEdgeMeshBoundaryEdgesMeshFunction.h:37
itkVTKPolyDataReader.h
itk::QuadEdgeMesh
Mesh class for 2D manifolds embedded in ND space.
Definition: itkQuadEdgeMesh.h:53
itkQuadEdgeMesh.h
itkQuadEdgeMeshBoundaryEdgesMeshFunction.h
itk::Math::e
static constexpr double e
Definition: itkMath.h:54
itk::VTKPolyDataReader
Reads a vtkPolyData file and create an itkMesh.
Definition: itkVTKPolyDataReader.h:45
itk::GTest::TypedefsAndConstructors::Dimension2::Dimension
constexpr unsigned int Dimension
Definition: itkGTestTypedefsAndConstructors.h:44