BoostBreadthFirstSearchTree

#include <vtkBoostBreadthFirstSearchTree.h>
#include <vtkDataSetAttributes.h>
#include <vtkDoubleArray.h>
#include <vtkGraphLayoutView.h>
#include <vtkIntArray.h>
#include <vtkMutableUndirectedGraph.h>
#include <vtkNew.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkTree.h>

int main(int, char*[])
{
  vtkNew<vtkMutableUndirectedGraph> g;

  // Create 5 vertices
  vtkIdType v1 = g->AddVertex();
  vtkIdType v2 = g->AddVertex();
  vtkIdType v3 = g->AddVertex();
  vtkIdType v4 = g->AddVertex();
  vtkIdType v5 = g->AddVertex();

  // Create a graph
  g->AddEdge(v1, v2);
  g->AddEdge(v1, v3);
  g->AddEdge(v2, v4);
  g->AddEdge(v4, v5);

  vtkNew<vtkBoostBreadthFirstSearchTree> bfsTree;
  bfsTree->SetOriginVertex(v5);
  bfsTree->SetInput(g);
  bfsTree->Update();

  {
    // Original graph
    vtkNew<vtkGraphLayoutView> graphLayoutView;
    graphLayoutView->AddRepresentationFromInput(g);
    graphLayoutView->SetLayoutStrategyToTree();
    graphLayoutView->ResetCamera();
    graphLayoutView->Render();
    graphLayoutView->GetInteractor()->Start();
  }

  {
    // BFS tree
    vtkNew<vtkGraphLayoutView> graphLayoutView;
    graphLayoutView->SetLayoutStrategyToTree();
    graphLayoutView->AddRepresentationFromInput(bfsTree->GetOutput());
    graphLayoutView->ResetCamera();
    graphLayoutView->Render();
    graphLayoutView->GetInteractor()->Start();
  }

  return EXIT_SUCCESS;
}

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(BoostBreadthFirstSearchTree)

find_package(VTK COMPONENTS 
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "BoostBreadthFirstSearchTree: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(BoostBreadthFirstSearchTree MACOSX_BUNDLE BoostBreadthFirstSearchTree.cxx )
  target_link_libraries(BoostBreadthFirstSearchTree PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS BoostBreadthFirstSearchTree
  MODULES ${VTK_LIBRARIES}
)

cd BoostBreadthFirstSearchTree/build

cmake ..

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

make

./BoostBreadthFirstSearchTree