# ImagePlaneWidget

VTKExamples/Cxx/Widgets/ImagePlaneWidget

### Code

ImagePlaneWidget.cxx

    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkPolyData.h>
    #include <vtkSmartPointer.h>
    #include <vtkSphereSource.h>
    #include <vtkImagePlaneWidget.h>
    #include <vtkInteractorStyleTrackballActor.h>
    #include <vtkInteractorStyleTrackballCamera.h>

    int main(int, char *[])
    {
      vtkSmartPointer<vtkSphereSource> sphereSource =
        vtkSmartPointer<vtkSphereSource>::New();
      sphereSource->Update();

      // Create a mapper and actor
      vtkSmartPointer<vtkPolyDataMapper> mapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapper->SetInputConnection(sphereSource->GetOutputPort());
      vtkSmartPointer<vtkActor> actor =
        vtkSmartPointer<vtkActor>::New();
      actor->SetMapper(mapper);

      // A renderer and render window
      vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> renderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
      renderWindow->AddRenderer(renderer);
      renderer->AddActor(actor);

      // An interactor
      vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      renderWindowInteractor->SetRenderWindow(renderWindow);

      //vtkSmartPointer<vtkInteractorStyleTrackballActor> style =
        //vtkSmartPointer<vtkInteractorStyleTrackballActor>::New();
      vtkSmartPointer<vtkInteractorStyleTrackballCamera> style =
        vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();

      renderWindowInteractor->SetInteractorStyle( style );

      vtkSmartPointer<vtkImagePlaneWidget> planeWidget =
        vtkSmartPointer<vtkImagePlaneWidget>::New();
      planeWidget->SetInteractor(renderWindowInteractor);
      planeWidget->TextureVisibilityOff();

      double origin[3] = {0, 1,0};
      planeWidget->SetOrigin(origin);
      planeWidget->UpdatePlacement();

      // Render
      renderWindow->Render();

      renderWindowInteractor->Initialize();
      renderWindow->Render();
      planeWidget->On();

      // Begin mouse interaction
      renderWindowInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(ImagePlaneWidget)

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

    add_executable(ImagePlaneWidget MACOSX_BUNDLE ImagePlaneWidget.cxx )

    target_link_libraries(ImagePlaneWidget ${VTK_LIBRARIES})

### Download and Build ImagePlaneWidget

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

    cd ImagePlaneWidget/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:

    ./ImagePlaneWidget

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.