# SideBySideRenderWindowsQt

VTKExamples/Cxx/Qt/SideBySideRenderWindowsQt

### Code

SideBySideRenderWindowsQt.cxx

    #include "SideBySideRenderWindowsQt.h"

    #include <vtkDataObjectToTable.h>
    #include <vtkElevationFilter.h>
    #include "vtkGenericOpenGLRenderWindow.h"
    #include <vtkPolyDataMapper.h>
    #include <vtkQtTableView.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindow.h>
    #include <vtkSphereSource.h>
    #include <vtkCubeSource.h>
    #include <vtkSmartPointer.h>

    // Constructor
    SideBySideRenderWindowsQt::SideBySideRenderWindowsQt()
    {
      this->setupUi(this);

      vtkNew<vtkGenericOpenGLRenderWindow> renderWindowLeft;
      this->qvtkWidgetLeft->SetRenderWindow(renderWindowLeft);

      vtkNew<vtkGenericOpenGLRenderWindow> renderWindowRight;
      this->qvtkWidgetRight->SetRenderWindow(renderWindowRight);

      // Sphere
      vtkSmartPointer<vtkSphereSource> sphereSource =
          vtkSmartPointer<vtkSphereSource>::New();
      sphereSource->Update();
      vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
          vtkSmartPointer<vtkPolyDataMapper>::New();
      sphereMapper->SetInputConnection(sphereSource->GetOutputPort());
      vtkSmartPointer<vtkActor> sphereActor =
          vtkSmartPointer<vtkActor>::New();
      sphereActor->SetMapper(sphereMapper);

      // Cube
      vtkSmartPointer<vtkCubeSource> cubeSource =
          vtkSmartPointer<vtkCubeSource>::New();
      cubeSource->Update();
      vtkSmartPointer<vtkPolyDataMapper> cubeMapper =
          vtkSmartPointer<vtkPolyDataMapper>::New();
      cubeMapper->SetInputConnection(cubeSource->GetOutputPort());
      vtkSmartPointer<vtkActor> cubeActor =
          vtkSmartPointer<vtkActor>::New();
      cubeActor->SetMapper(cubeMapper);

      // VTK Renderer
      vtkSmartPointer<vtkRenderer> leftRenderer =
          vtkSmartPointer<vtkRenderer>::New();
      leftRenderer->AddActor(sphereActor);

      vtkSmartPointer<vtkRenderer> rightRenderer =
          vtkSmartPointer<vtkRenderer>::New();

      // Add Actor to renderer
      rightRenderer->AddActor(cubeActor);

      // VTK/Qt wedded
      this->qvtkWidgetLeft->GetRenderWindow()->AddRenderer(leftRenderer);
      this->qvtkWidgetRight->GetRenderWindow()->AddRenderer(rightRenderer);

      // Set up action signals and slots
      connect(this->actionExit, SIGNAL(triggered()), this, SLOT(slotExit()));
    }

    void SideBySideRenderWindowsQt::slotExit()
    {
      qApp->exit();
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(SideBySideRenderWindowsQt)

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

    add_executable(SideBySideRenderWindowsQt MACOSX_BUNDLE SideBySideRenderWindowsQt.cxx )

    target_link_libraries(SideBySideRenderWindowsQt ${VTK_LIBRARIES})

### Download and Build SideBySideRenderWindowsQt

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

    cd SideBySideRenderWindowsQt/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:

    ./SideBySideRenderWindowsQt

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.