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RandomGraphSource

Repository source: RandomGraphSource

Other languages

See (Python), (PythonicAPI), (Java)

Question

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Code

RandomGraphSource.cxx

#include <vtkForceDirectedLayoutStrategy.h>
#include <vtkGraphLayoutView.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkRandomGraphSource.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main(int, char*[])
{
  vtkNew<vtkNamedColors> colors;

  vtkNew<vtkRandomGraphSource> randomGraphSource;
  randomGraphSource->SetNumberOfVertices(5);
  randomGraphSource->SetNumberOfEdges(4);
  // This ensures repeatable results for testing. Turn this off for real use.
  randomGraphSource->SetSeed(123);
  randomGraphSource->Update();

  vtkNew<vtkForceDirectedLayoutStrategy> forceDirected;

  vtkNew<vtkGraphLayoutView> graphLayoutView;
  graphLayoutView->AddRepresentationFromInput(randomGraphSource->GetOutput());
  // If we create a layout object directly, just set the pointer to this method.
  // graphLayoutView->SetLayoutStrategy(forceDirected);
  graphLayoutView->SetLayoutStrategyToForceDirected();
  graphLayoutView->GetRenderer()->SetBackground(
      colors->GetColor3d("Navy").GetData());
  graphLayoutView->GetRenderer()->SetBackground2(
      colors->GetColor3d("MidnightBlue").GetData());
  graphLayoutView->GetRenderWindow()->SetWindowName("RandomGraphSource");
  graphLayoutView->Render();
  graphLayoutView->ResetCamera();
  graphLayoutView->GetInteractor()->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(RandomGraphSource)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  InfovisCore
  InfovisLayout
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
  ViewsInfovis
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "RandomGraphSource: 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(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}
)

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.