VTK/Examples/Broken/RectangularButtonSource

#include <vtkSmartPointer.h>
#include <vtkWeakPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkTextActor.h>
#include <vtkTextProperty.h>
#include <vtkRectangularButtonSource.h>
#include <vtkInteractorStyleTrackballActor.h>
#include <vtkObjectFactory.h>
#include <vtkProperty.h>
 
 
class MouseInteractorStyle : public vtkInteractorStyleTrackballActor
{
  public:
    static MouseInteractorStyle* New();
    vtkTypeRevisionMacro(MouseInteractorStyle,vtkInteractorStyleTrackballActor);
 
    virtual void OnLeftButtonDown() 
    {
      cout << "Pressed left mouse button." << endl;
 
      if(this->InteractionProp)
        {
        vtkActor::SafeDownCast(this->InteractionProp)->GetProperty()->SetColor(1,0,0);
        if (this->RenderWindow)
           this->RenderWindow->Render();
        }
 
      // forward events
      vtkInteractorStyleTrackballActor::OnLeftButtonDown();
    }
 
    void SetRenderWindow(vtkRenderWindow* renderWindow) {this->RenderWindow = renderWindow;}
 
  private:
    vtkWeakPointer<vtkRenderWindow> RenderWindow;
};
 
vtkCxxRevisionMacro(MouseInteractorStyle, "$Revision: 1.1 $");
vtkStandardNewMacro(MouseInteractorStyle);
 
 
int main (int argc, char* argv[])
{
 
  vtkSmartPointer<vtkRectangularButtonSource> button = 
      vtkSmartPointer<vtkRectangularButtonSource>::New();
 
  //create a mapper
  vtkSmartPointer<vtkPolyDataMapper> mapper = 
      vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInput(button->GetOutput());
 
	// create an actor
  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);
 
  vtkSmartPointer<MouseInteractorStyle> style = 
      vtkSmartPointer<MouseInteractorStyle>::New();
  renderWindowInteractor->SetInteractorStyle( style );
  style->SetRenderWindow(renderWindow);
 
  // add the actors to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(1,1,1); // Background color white
 
  //setup the text and add it to the window
  vtkSmartPointer<vtkTextActor> textActor = 
      vtkSmartPointer<vtkTextActor>::New();
  textActor->GetTextProperty()->SetFontSize ( 24 );
  textActor->SetPosition2 ( 10, 40 );
  renderer->AddActor2D ( textActor );
  textActor->SetInput ( "Hello world" );
  textActor->GetTextProperty()->SetColor ( 1.0,0.0,0.0 );
 
  // render and interact
  renderWindow->Render();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}