VTK/Examples/Cxx/GeometricObjects/Quad

#include <vtkVersion.h>
#include <vtkCellArray.h>
#include <vtkPoints.h>
#include <vtkQuad.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
 
int main(int , char *[])
{
  // Create four points (must be in counter clockwise order)
  double p0[3] = {0.0, 0.0, 0.0};
  double p1[3] = {1.0, 0.0, 0.0};
  double p2[3] = {1.0, 1.0, 0.0};
  double p3[3] = {0.0, 1.0, 0.0};
 
  // Add the points to a vtkPoints object
  vtkSmartPointer<vtkPoints> points =
    vtkSmartPointer<vtkPoints>::New();
  points->InsertNextPoint(p0);
  points->InsertNextPoint(p1);
  points->InsertNextPoint(p2);
  points->InsertNextPoint(p3);
 
  // Create a quad on the four points
  vtkSmartPointer<vtkQuad> quad =
    vtkSmartPointer<vtkQuad>::New();
  quad->GetPointIds()->SetId(0,0);
  quad->GetPointIds()->SetId(1,1);
  quad->GetPointIds()->SetId(2,2);
  quad->GetPointIds()->SetId(3,3);
 
  // Create a cell array to store the quad in
  vtkSmartPointer<vtkCellArray> quads =
    vtkSmartPointer<vtkCellArray>::New();
  quads->InsertNextCell(quad);
 
  // Create a polydata to store everything in
  vtkSmartPointer<vtkPolyData> polydata =
    vtkSmartPointer<vtkPolyData>::New();
 
  // Add the points and quads to the dataset
  polydata->SetPoints(points);
  polydata->SetPolys(quads);
 
  // Setup actor and mapper
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
#if VTK_MAJOR_VERSION <= 5
  mapper->SetInput(polydata);
#else
  mapper->SetInputData(polydata);
#endif
 
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
 
  // Setup render window, renderer, 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);
  renderer->AddActor(actor);
  renderWindow->Render();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}