VTK/Examples/Cxx/Graphs/EdgeListIterator

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EdgeListIterator.cxx

#include <vtkMutableUndirectedGraph.h>
#include <vtkSmartPointer.h>
#include <vtkEdgeListIterator.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkMutableUndirectedGraph> g = 
    vtkSmartPointer<vtkMutableUndirectedGraph>::New();
  
  // Create a graph
  vtkIdType v0 = g->AddVertex();
  vtkIdType v1 = g->AddVertex();
  vtkIdType v2 = g->AddVertex();
  
  g->AddEdge(v0, v1);
  g->AddEdge(v1, v2);
  g->AddEdge(v0, v2);
  
  vtkSmartPointer<vtkEdgeListIterator> edgeListIterator = 
      vtkSmartPointer<vtkEdgeListIterator>::New();
  g->GetEdges(edgeListIterator);
  
  while(edgeListIterator->HasNext())
    {
    vtkEdgeType edge = edgeListIterator->Next();
    std::cout << "Edge: " << edge.Id << " is from "
	      << "Source: " << edge.Source << " to Target: " << edge.Target << std::endl;
    }
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(EdgeListIterator)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(EdgeListIterator MACOSX_BUNDLE EdgeListIterator.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(EdgeListIterator ${VTK_LIBRARIES})
else()
  target_link_libraries(EdgeListIterator vtkHybrid vtkWidgets)
endif()

Download and Build EdgeListIterator

Click here to download EdgeListIterator. and its CMakeLists.txt file.

Once the tarball EdgeListIterator.tar has been downloaded and extracted,

cd EdgeListIterator/build 
  • If VTK is installed:
cmake ..
  • If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./EdgeListIterator

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.