Function CreateData

Examples/ImageProcessing/Cxx/ImageBenchmark.cxx:930–1011

create the source data

// create the source data
static vtkImageData* CreateData(
  const std::string& sourceName, const int scalarType, const int size[3])
{
  vtkImageData* output = nullptr;

  if (sourceName == "gaussian")
  {
    vtkSmartPointer<vtkImageGaussianSource> source = vtkSmartPointer<vtkImageGaussianSource>::New();
    source->SetWholeExtent(0, size[0] - 1, 0, size[1] - 1, 0, size[2] - 1);
    source->SetCenter(0.5 * (size[0] - 1), 0.5 * (size[1] - 1), 0.5 * (size[2] - 1));
    int maxdim = (size[0] > size[1] ? size[0] : size[1]);
    maxdim = (maxdim > size[2] ? maxdim : size[2]);
    source->SetStandardDeviation(0.25 * (maxdim - 1));
    source->SetMaximum(255.0);

    vtkSmartPointer<vtkImageCast> cast = vtkSmartPointer<vtkImageCast>::New();
    cast->SetInputConnection(source->GetOutputPort());
    cast->SetOutputScalarType(scalarType);
    cast->Update();

    output = cast->GetOutput();
    output->Register(nullptr);
  }
  else if (sourceName == "noise")
  {
    vtkSmartPointer<vtkImageNoiseSource> source = vtkSmartPointer<vtkImageNoiseSource>::New();
    source->SetMinimum(0.0);
    source->SetMinimum(255.0);
    source->SetWholeExtent(0, size[0] - 1, 0, size[1] - 1, 0, size[2] - 1);

    vtkSmartPointer<vtkImageCast> cast = vtkSmartPointer<vtkImageCast>::New();
    cast->SetInputConnection(source->GetOutputPort());
    cast->SetOutputScalarType(scalarType);
    cast->Update();

    output = cast->GetOutput();
    output->Register(nullptr);
  }
  else if (sourceName == "mandelbrot")
  {
    vtkSmartPointer<vtkImageMandelbrotSource> source =
      vtkSmartPointer<vtkImageMandelbrotSource>::New();
    source->SetWholeExtent(0, size[0] - 1, 0, size[1] - 1, 0, size[2] - 1);

    vtkSmartPointer<vtkImageCast> cast = vtkSmartPointer<vtkImageCast>::New();
    cast->SetInputConnection(source->GetOutputPort());
    cast->SetOutputScalarType(scalarType);
    cast->Update();

    output = cast->GetOutput();
    output->Register(nullptr);
  }
  else if (sourceName == "grid")
  {
    vtkSmartPointer<vtkImageGridSource> source = vtkSmartPointer<vtkImageGridSource>::New();
    source->SetDataExtent(0, size[0] - 1, 0, size[1] - 1, 0, size[2] - 1);
    source->SetLineValue(255.0);
    source->SetFillValue(0.0);