VTK/Examples/Cxx/Graphs/ConstructTree

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VTK Examples Baseline Graphs TestTree.png

Tree.cxx

#include <vtkSmartPointer.h>
 
#include <vtkGraphLayoutView.h>
#include <vtkMutableDirectedGraph.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkTree.h>
 
int main (int, char *[] )
{
 
  vtkSmartPointer<vtkMutableDirectedGraph> graph = 
    vtkSmartPointer<vtkMutableDirectedGraph>::New();
 
  vtkIdType v1 = graph->AddVertex();
  vtkIdType v2 = graph->AddChild(v1);
  graph->AddChild(v1);
  graph->AddChild(v2);
 
  /*
  //equivalent to:
 
  vtkIdType V1 = g->AddVertex();
  vtkIdType V2 = g->AddVertex();
  vtkIdType V3 = g->AddVertex();
  vtkIdType V4 = g->AddVertex();
 
  g->AddEdge ( V1, V2 );
  g->AddEdge ( V1, V3 );
  g->AddEdge ( V2, V4 );
  */
 
  vtkSmartPointer<vtkTree> tree = 
    vtkSmartPointer<vtkTree>::New();
  bool success = tree->CheckedShallowCopy(graph);
  std::cout << "Success? " << success << std::endl;
 
  vtkSmartPointer<vtkGraphLayoutView> treeLayoutView = 
    vtkSmartPointer<vtkGraphLayoutView>::New();
  treeLayoutView->AddRepresentationFromInput(tree);
  treeLayoutView->SetLayoutStrategyToTree();
  treeLayoutView->ResetCamera();
  treeLayoutView->Render();
  treeLayoutView->GetInteractor()->Start();
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

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