VTK/Examples/Cxx/Utilities/Animation

#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkCommand.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
 
class vtkTimerCallback2 : public vtkCommand
{
  public:
    static vtkTimerCallback2 *New()
    {
      vtkTimerCallback2 *cb = new vtkTimerCallback2;
      cb->TimerCount = 0;
      return cb;
    }
 
    virtual void Execute(vtkObject *caller, unsigned long eventId,
                         void * vtkNotUsed(callData))
    {
      if (vtkCommand::TimerEvent == eventId)
        {
        ++this->TimerCount;
        }
      std::cout << this->TimerCount << std::endl;
      actor->SetPosition(this->TimerCount, this->TimerCount,0);
      vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::SafeDownCast(caller);
      iren->GetRenderWindow()->Render();
    }
 
  private:
    int TimerCount;
  public:
    vtkActor* actor;
};
 
int main(int, char* [])
{
  // Create a sphere
  vtkSmartPointer<vtkSphereSource> sphereSource = 
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource->SetCenter(0.0, 0.0, 0.0);
  sphereSource->SetRadius(5.0);
  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);
 
  // Create a renderer, render window, and interactor
  vtkSmartPointer<vtkRenderer> renderer = 
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);
 
  // Add the actor to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(1,1,1); // Background color white
 
  // Render and interact
  renderWindow->Render();
 
  // Initialize must be called prior to creating timer events.
  renderWindowInteractor->Initialize();
 
  // Sign up to receive TimerEvent
  vtkSmartPointer<vtkTimerCallback2> cb = 
    vtkSmartPointer<vtkTimerCallback2>::New();
  cb->actor = actor;
  renderWindowInteractor->AddObserver(vtkCommand::TimerEvent, cb);
 
  int timerId = renderWindowInteractor->CreateRepeatingTimer(100);
  std::cout << "timerId: " << timerId << std::endl;
 
  // Start the interaction and timer
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}