VTK/Examples/Cxx/Graphs/RemoveIsolatedVertices

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RemoveIsolatedVertices.cxx

#include <vtkSmartPointer.h>
 
#include <vtkMutableUndirectedGraph.h>
#include <vtkPoints.h>
#include <vtkRemoveIsolatedVertices.h>
 
int main(int, char *[])
{
  vtkSmartPointer<vtkMutableUndirectedGraph> g = 
      vtkSmartPointer<vtkMutableUndirectedGraph>::New();
 
  // Create 3 vertices
  vtkIdType v1 = g->AddVertex();
  vtkIdType v2 = g->AddVertex();
  g->AddVertex();
 
  g->AddEdge ( v1, v2 );
 
  std::cout << "Graph has "
            << g->GetNumberOfVertices()
            << " vertices and " 
            << g->GetNumberOfEdges() << " edge before." << std::endl;
 
  vtkSmartPointer<vtkRemoveIsolatedVertices> filter = 
    vtkSmartPointer<vtkRemoveIsolatedVertices>::New();
  filter->SetInputConnection(g->GetProducerPort());
  filter->Update();
 
  std::cout << "Graph has "
            << filter->GetOutput()->GetNumberOfVertices() 
            << " vertices and "
            << filter->GetOutput()->GetNumberOfEdges()
            << " edge after." << std::endl;
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(RemoveIsolatedVertices)
 
FIND_PACKAGE(VTK REQUIRED)
INCLUDE(${VTK_USE_FILE})
 
ADD_EXECUTABLE(RemoveIsolatedVertices RemoveIsolatedVertices.cxx)
TARGET_LINK_LIBRARIES(RemoveIsolatedVertices vtkHybrid vtkInfovis)
Retrieved from "http://www.vtk.org/Wiki/VTK/Examples/Cxx/Graphs/RemoveIsolatedVertices"
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