RandomGraphSource

VTKExamples/Cxx/Graphs/RandomGraphSource


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See (Python)

Code

RandomGraphSource.cxx

#include <vtkSmartPointer.h>

#include <vtkGraphLayoutView.h>
#include <vtkGraphWriter.h>
#include <vtkRandomGraphSource.h>
#include <vtkRenderWindowInteractor.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkRandomGraphSource> randomGraphSource = 
    vtkSmartPointer<vtkRandomGraphSource>::New();
  randomGraphSource->SetNumberOfVertices(5);
  randomGraphSource->SetNumberOfEdges(4);
  randomGraphSource->SetSeed(0); // This ensures repeatable results for testing. Turn this off for real use.
  randomGraphSource->Update();

  vtkSmartPointer<vtkGraphLayoutView> graphLayoutView = 
    vtkSmartPointer<vtkGraphLayoutView>::New();
  graphLayoutView->AddRepresentationFromInput(
    randomGraphSource->GetOutput());
  graphLayoutView->ResetCamera();
  graphLayoutView->Render();
  graphLayoutView->GetInteractor()->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(RandomGraphSource)

find_package(VTK COMPONENTS 
  vtkCommonCore
  vtkIOLegacy
  vtkInfovisCore
  vtkInteractionStyle
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingOpenGL2
  vtkViewsInfovis QUIET)
if (NOT VTK_FOUND)
  message("Skipping RandomGraphSource: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(RandomGraphSource MACOSX_BUNDLE RandomGraphSource.cxx )
  target_link_libraries(RandomGraphSource PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(RandomGraphSource MACOSX_BUNDLE RandomGraphSource.cxx )
  target_link_libraries(RandomGraphSource PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS RandomGraphSource
    MODULES ${VTK_LIBRARIES}
    )
endif () 

Download and Build RandomGraphSource

Click here to download RandomGraphSource and its CMakeLists.txt file. Once the tarball RandomGraphSource.tar has been downloaded and extracted,

cd RandomGraphSource/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:

./RandomGraphSource

WINDOWS USERS

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