# SceneBounds

VTKExamples/Cxx/Visualization/SceneBounds

### Code

SceneBounds.cxx

    #include <vtkSmartPointer.h>
    #include <vtkTransform.h>
    #include <vtkCubeSource.h>
    #include <vtkProperty.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkAssembly.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkPolyData.h>
    #include <vtkSphereSource.h>
    #include <vtkOrientationMarkerWidget.h>
    #include <vtkAxesActor.h>
    #include <vtkPropAssembly.h>

    int main(int, char *[])
    {
      // Create a 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);

      // Create a cube
      vtkSmartPointer<vtkCubeSource> cubeSource =
        vtkSmartPointer<vtkCubeSource>::New();
      cubeSource->SetCenter(5.0, 0.0, 0.0);
      cubeSource->Update();

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

      // Visualization
      vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> renderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
      renderWindow->AddRenderer(renderer);

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

      renderer->AddActor(sphereActor);
      renderer->AddActor(cubeActor);
      renderer->SetBackground(.3, .4, .5);

      renderer->ResetCamera();
      double bounds[6];
      renderer->ComputeVisiblePropBounds(bounds);
      std::cout << bounds[0] << " "
                << bounds[1] << " "
                << bounds[2] << " "
                << bounds[3] << " "
                << bounds[4] << " "
                << bounds[5] << std::endl;
      renderWindow->Render();

      renderWindowInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(SceneBounds)

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

    add_executable(SceneBounds MACOSX_BUNDLE SceneBounds.cxx )

    target_link_libraries(SceneBounds ${VTK_LIBRARIES})

### Download and Build SceneBounds

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

    cd SceneBounds/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:

    ./SceneBounds

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.