# RubberBand3D

VTKExamples/Cxx/Interaction/RubberBand3D

### Code

RubberBand3D.cxx

    #include <vtkSmartPointer.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkPolyData.h>
    #include <vtkSphereSource.h>
    #include <vtkInteractorStyleRubberBand3D.h>
    #include <vtkObjectFactory.h>

    class MyRubberBand3D : public vtkInteractorStyleRubberBand3D
    {
      public:
        static MyRubberBand3D* New();
        vtkTypeMacro(MyRubberBand3D, vtkInteractorStyleRubberBand3D);

        virtual void OnLeftButtonUp()
        {
          // Forward events
          vtkInteractorStyleRubberBand3D::OnLeftButtonUp();

          std::cout << "Start position: " << this->StartPosition[0] << " " << this->StartPosition[1] << std::endl;
          std::cout << "End position: " << this->EndPosition[0] << " " << this->EndPosition[1] << std::endl;
        }

    };
    vtkStandardNewMacro(MyRubberBand3D);

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

      // 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);

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

      // Add the actors to the scene
      renderer->AddActor(actor);
      renderer->SetBackground(1,1,1); // Background color white

      renderWindow->Render();

      vtkSmartPointer<MyRubberBand3D> style =
        vtkSmartPointer<MyRubberBand3D>::New();
      renderWindowInteractor->SetInteractorStyle( style );

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

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(RubberBand3D)

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

    add_executable(RubberBand3D MACOSX_BUNDLE RubberBand3D.cxx )

    target_link_libraries(RubberBand3D ${VTK_LIBRARIES})

### Download and Build RubberBand3D

Click here to download RubberBand3D and its CMakeLists.txt file. Once the tarball RubberBand3D.tar has been downloaded and extracted,

    cd RubberBand3D/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:

    ./RubberBand3D

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.