VTK/Examples/Cxx/RectilinearGrid/RectilinearGrid

#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkRectilinearGrid.h>
#include <vtkMath.h>
#include <vtkDoubleArray.h>
#include <vtkDataSetMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
 
int main(int, char *[])
{
  // Create a grid
  vtkSmartPointer<vtkRectilinearGrid> grid =
    vtkSmartPointer<vtkRectilinearGrid>::New();
 
  grid->SetDimensions(2,3,1);
 
  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);
 
  grid->SetXCoordinates(xArray);
  grid->SetYCoordinates(yArray);
  grid->SetZCoordinates(zArray);
 
  std::cout << "There are " << grid->GetNumberOfPoints() 
            << " points." << std::endl;
  std::cout << "There are " << grid->GetNumberOfCells() 
            << " cells." << std::endl;
 
  for(vtkIdType id = 0; id < grid->GetNumberOfPoints(); id++)
    {
    double p[3];
    grid->GetPoint(id, p);
    std::cout << "Point " << id 
              << " : (" << p[0] << " , " << p[1] << " , " << p[2] << ")" << std::endl;
    }
 
  // Create a mapper and actor
  vtkSmartPointer<vtkDataSetMapper> mapper =
    vtkSmartPointer<vtkDataSetMapper>::New();
#if VTK_MAJOR_VERSION <= 5
  mapper->SetInputConnection(grid->GetProducerPort());
#else
  mapper->SetInputData(grid);
#endif
 
  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);
  renderer->SetBackground(.3, .6, .3); // Background color green
 
  renderWindow->Render();
  renderWindowInteractor->Start();
 
  return EXIT_SUCCESS;
}