# VectorOfActors

VTKExamples/Cxx/Visualization/VectorOfActors

### Description

This example creates multiple actors and stores them in a vector. The resulting image is 10 spheres in a line.

### Code

VectorOfActors.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 <vtkInteractorStyleTrackballCamera.h>
    #include <vtkInteractorStyleTrackball.h>

    #include <vector>

    int main(int, char *[])
    {
      std::vector<vtkSmartPointer<vtkActor> > actors;

      for(unsigned int i = 0; i < 10; i++)
      {
        vtkSmartPointer<vtkSphereSource> sphereSource =
          vtkSmartPointer<vtkSphereSource>::New();
        sphereSource->SetCenter(i, 0.0, 0.0);
        sphereSource->SetRadius(.2);

        vtkSmartPointer<vtkPolyDataMapper> mapper =
          vtkSmartPointer<vtkPolyDataMapper>::New();
        mapper->SetInputConnection(sphereSource->GetOutputPort());

        vtkSmartPointer<vtkActor> actor =
          vtkSmartPointer<vtkActor>::New();
        actor->SetMapper(mapper);

        actors.push_back(actor);
      }

      // 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
      for(unsigned int i = 0; i < actors.size(); i++)
      {
        renderer->AddActor(actors[i]);
      }

      renderer->SetBackground(1,1,1); // Background color white

      // Render
      renderWindow->Render();

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

      renderWindowInteractor->SetInteractorStyle( style );

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

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(VectorOfActors)

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

    add_executable(VectorOfActors MACOSX_BUNDLE VectorOfActors.cxx )

    target_link_libraries(VectorOfActors ${VTK_LIBRARIES})

### Download and Build VectorOfActors

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

    cd VectorOfActors/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:

    ./VectorOfActors

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.