VTK/Examples/Cxx/InfoVis/GraphPoints

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VTK Examples Baseline InfoVis TestGraphPoints.png

GraphPoints.cxx

#include <vtkMutableUndirectedGraph.h>
#include <vtkPoints.h>
#include <vtkSmartPointer.h>
#include <vtkGraphLayoutView.h>
#include <vtkRenderWindowInteractor.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkMutableUndirectedGraph> g =
    vtkSmartPointer<vtkMutableUndirectedGraph>::New();

  // Create 3 vertices
  vtkIdType v1 = g->AddVertex();
  vtkIdType v2 = g->AddVertex();
  vtkIdType v3 = g->AddVertex();
  g->AddEdge(v1, v2);
  g->AddEdge(v1, v3);

  vtkSmartPointer<vtkPoints> points =
    vtkSmartPointer<vtkPoints>::New();
  points->InsertNextPoint(0.0, 0.0, 0.0);
  points->InsertNextPoint(1.0, 0.0, 0.0);
  points->InsertNextPoint(0.0, 1.0, 0.0);

  g->SetPoints(points);

  std::cout << "Number of output points: " << g->GetPoints()->GetNumberOfPoints() << std::endl;

  vtkSmartPointer<vtkGraphLayoutView> graphLayoutView =
    vtkSmartPointer<vtkGraphLayoutView>::New();
  graphLayoutView->AddRepresentationFromInput(g);
  graphLayoutView->SetLayoutStrategy("Pass Through");
  graphLayoutView->ResetCamera();
  graphLayoutView->Render();
  graphLayoutView->GetInteractor()->Start();
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(GraphPoints)

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

add_executable(GraphPoints MACOSX_BUNDLE GraphPoints.cxx)

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

Download and Build GraphPoints

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

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

cd GraphPoints/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:

./GraphPoints

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.