VTK/Examples/Cxx/Visualization/LabeledDataMapper

#include <vtkSmartPointer.h>
#include <vtkPointSource.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkLabeledDataMapper.h>
#include <vtkProperty.h>
#include <vtkActor.h>
#include <vtkActor2D.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
 
int main(int, char *[])
{
  // Create a point set
  vtkSmartPointer<vtkPointSource> pointSource = 
    vtkSmartPointer<vtkPointSource>::New();
  pointSource->SetNumberOfPoints(10);
  pointSource->Update();
 
  // Create a mapper and actor
  vtkSmartPointer<vtkPolyDataMapper> pointMapper = 
    vtkSmartPointer<vtkPolyDataMapper>::New();
  pointMapper->SetInputConnection(pointSource->GetOutputPort());
 
  vtkSmartPointer<vtkActor> pointActor = 
    vtkSmartPointer<vtkActor>::New();
  pointActor->SetMapper(pointMapper);
  pointActor->GetProperty()->SetPointSize(10);
  pointActor->GetProperty()->SetColor(1, 1, .4);
 
  vtkSmartPointer<vtkLabeledDataMapper> labelMapper = 
    vtkSmartPointer<vtkLabeledDataMapper>::New();
  labelMapper->SetInputConnection(pointSource->GetOutputPort());
  vtkSmartPointer<vtkActor2D> labelActor = 
    vtkSmartPointer<vtkActor2D>::New();
  labelActor->SetMapper(labelMapper);
 
  // 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(pointActor);
  renderer->AddActor(labelActor);
 
  renderer->SetBackground(.1, .3, .2); // Background color green
 
  // Render and interact
  renderWindow->Render();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}