ITK  5.0.0
Insight Segmentation and Registration Toolkit
SphinxExamples/src/Core/QuadEdgeMesh/ExtractVertexOnMeshBoundaries/Code.cxx
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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();
}
{
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;
}