VTK/Examples/Cxx/RectilinearGrid/VisualizeRectilinearGridCells

#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkRectilinearGrid.h>
#include <vtkMath.h>
#include <vtkDataSetMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkShrinkFilter.h>
#include <vtkDoubleArray.h>
 
int main(int, char *[])
{
  // Create a grid
  vtkSmartPointer<vtkRectilinearGrid> grid = 
    vtkSmartPointer<vtkRectilinearGrid>::New();
 
  grid->SetDimensions(2,3,2);
 
  vtkSmartPointer<vtkDoubleArray> xArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  xArray->InsertNextValue(0.0);
  xArray->InsertNextValue(2.0);
 
  vtkSmartPointer<vtkDoubleArray> yArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  yArray->InsertNextValue(0.0);
  yArray->InsertNextValue(1.0);
  yArray->InsertNextValue(2.0);
 
  vtkSmartPointer<vtkDoubleArray> zArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  zArray->InsertNextValue(0.0);
  zArray->InsertNextValue(5.0);
 
  grid->SetXCoordinates(xArray);
  grid->SetYCoordinates(yArray);
  grid->SetZCoordinates(zArray);
 
  vtkSmartPointer<vtkShrinkFilter> shrinkFilter = 
    vtkSmartPointer<vtkShrinkFilter>::New();
#if VTK_MAJOR_VERSION <= 5
  shrinkFilter->SetInputConnection(grid->GetProducerPort());
#else
  shrinkFilter->SetInputData(grid);
#endif
  shrinkFilter->SetShrinkFactor(.8);
 
  // Create a mapper and actor
  vtkSmartPointer<vtkDataSetMapper> mapper = 
    vtkSmartPointer<vtkDataSetMapper>::New();
  mapper->SetInputConnection(shrinkFilter->GetOutputPort());
 
  vtkSmartPointer<vtkActor> actor = 
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
 
  // Visualize
  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;
}