SideBySideGraphs

VTKExamples/Cxx/Graphs/SideBySideGraphs


Description

This currently crashes - still trying to decide how to best display these graphs.

Code

SideBySideGraphs.cxx

#include <vtkSmartPointer.h>
#include <vtkGraphToPolyData.h>
#include <vtkDataSetAttributes.h>
#include <vtkMutableUndirectedGraph.h>
#include <vtkGraphLayoutView.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main(int, char *[])
{
  // Create the first graph
  vtkSmartPointer<vtkMutableUndirectedGraph> g0 = 
    vtkSmartPointer<vtkMutableUndirectedGraph>::New();
  {
  vtkIdType v1 = g0->AddVertex();
  vtkIdType v2 = g0->AddVertex();
  vtkIdType v3 = g0->AddVertex();

  g0->AddEdge(v1, v2);
  g0->AddEdge(v2, v3);
  g0->AddEdge(v1, v3);

  // Create points
  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);

  // Add the coordinates of the points to the graph
  g0->SetPoints(points);
  }

  // Create the second graph
  vtkSmartPointer<vtkMutableUndirectedGraph> g1 = 
    vtkSmartPointer<vtkMutableUndirectedGraph>::New();

  vtkIdType v1 = g1->AddVertex();
  vtkIdType v2 = g1->AddVertex();

  g1->AddEdge(v1, v2);

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

  // Add the coordinates of the points to the graph
  g1->SetPoints(points);

  // There will be one render window
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetSize(600, 300);

  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();

  // Define viewport ranges
  // (xmin, ymin, xmax, ymax)
  double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
  double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};

  vtkSmartPointer<vtkGraphLayoutView> graphLayoutView0 = 
    vtkSmartPointer<vtkGraphLayoutView>::New();
  graphLayoutView0->SetRenderWindow(renderWindow);
  graphLayoutView0->SetInteractor(renderWindowInteractor);
  graphLayoutView0->GetRenderer()->SetViewport(leftViewport);
  graphLayoutView0->AddRepresentationFromInput(g0);
  graphLayoutView0->ResetCamera();
  graphLayoutView0->Render();

  vtkSmartPointer<vtkGraphLayoutView> graphLayoutView1 = 
    vtkSmartPointer<vtkGraphLayoutView>::New();
  graphLayoutView1->SetRenderWindow(renderWindow);
  graphLayoutView1->SetInteractor(renderWindowInteractor);
  graphLayoutView1->GetRenderer()->SetViewport(rightViewport);
  graphLayoutView1->AddRepresentationFromInput(g1);
  graphLayoutView1->ResetCamera();
  graphLayoutView1->Render();

  //graphLayoutView0->GetInteractor()->Start();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(SideBySideGraphs)

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

add_executable(SideBySideGraphs MACOSX_BUNDLE SideBySideGraphs.cxx )

target_link_libraries(SideBySideGraphs ${VTK_LIBRARIES})

Download and Build SideBySideGraphs

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

cd SideBySideGraphs/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:

./SideBySideGraphs

WINDOWS USERS

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