VTK/Examples/Cxx/Widgets/Spline

#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkSplineWidget2.h>
 
int main(int, char *[])
{
  // 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<vtkSplineWidget2> splineWidget = 
    vtkSmartPointer<vtkSplineWidget2>::New();
  splineWidget->SetInteractor(renderWindowInteractor);
 
  renderWindowInteractor->Initialize();
  renderWindow->Render();
  splineWidget->On();
  renderer->ResetCamera();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}