Function task3

Examples/ParallelProcessing/Generic/Cxx/task3.cxx:15–100

Task 3 for TaskParallelismWithPorts. See TaskParallelismWithPorts.cxx for more information.

// Task 3 for TaskParallelismWithPorts.
// See TaskParallelismWithPorts.cxx for more information.
void task3(double data)
{
  double extent = data;
  int iextent = static_cast<int>(data);
  // The pipeline

  // Synthetic image source.
  vtkRTAnalyticSource* source1 = vtkRTAnalyticSource::New();
  source1->SetWholeExtent(-1 * iextent, iextent, -1 * iextent, iextent, -1 * iextent, iextent);
  source1->SetCenter(0, 0, 0);
  source1->SetStandardDeviation(0.5);
  source1->SetMaximum(255.0);
  source1->SetXFreq(60);
  source1->SetXMag(10);
  source1->SetYFreq(30);
  source1->SetYMag(18);
  source1->SetZFreq(40);
  source1->SetZMag(5);
  source1->GetOutput()->SetSpacing(2.0 / extent, 2.0 / extent, 2.0 / extent);

  // Iso-surfacing.
  vtkContourFilter* contour = vtkContourFilter::New();
  contour->SetInputConnection(source1->GetOutputPort());
  contour->SetNumberOfContours(1);
  contour->SetValue(0, 220);

  // Magnitude of the gradient vector.
  vtkImageGradientMagnitude* magn = vtkImageGradientMagnitude::New();
  magn->SetDimensionality(3);
  magn->SetInputConnection(source1->GetOutputPort());

  // Probe magnitude with iso-surface.
  vtkProbeFilter* probe = vtkProbeFilter::New();
  probe->SetInputConnection(contour->GetOutputPort());
  probe->SetSource(magn->GetOutput());
  probe->SpatialMatchOn();

  // Input port
  vtkInputPort* ip = vtkInputPort::New();
  ip->SetRemoteProcessId(1);
  ip->SetTag(11);

  // Append the local and remote data
  vtkAppendPolyData* append = vtkAppendPolyData::New();
  append->AddInput(ip->GetPolyDataOutput());
  append->AddInput(probe->GetPolyDataOutput());

  // Rendering objects.
  vtkPolyDataMapper* mapper = vtkPolyDataMapper::New();
  mapper->SetInputConnection(append->GetOutputPort());
  mapper->SetScalarRange(50, 180);

  vtkActor* actor = vtkActor::New();
  actor->SetMapper(mapper);

  // Create the render objects
  vtkRenderWindow* renWin = vtkRenderWindow::New();
  renWin->SetSize(WINDOW_WIDTH, WINDOW_HEIGHT);