Method vtkSphereWidget

Interaction/Widgets/vtkSphereWidget.cxx:27–87

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//------------------------------------------------------------------------------
vtkSphereWidget::vtkSphereWidget()
{
  this->State = vtkSphereWidget::Start;
  this->EventCallbackCommand->SetCallback(vtkSphereWidget::ProcessEvents);

  this->Representation = VTK_SPHERE_WIREFRAME;

  // Build the representation of the widget
  // Represent the sphere
  this->SphereSource = vtkSphereSource::New();
  this->SphereSource->SetThetaResolution(16);
  this->SphereSource->SetPhiResolution(8);
  this->SphereSource->LatLongTessellationOn();
  this->SphereMapper = vtkPolyDataMapper::New();
  this->SphereMapper->SetInputConnection(this->SphereSource->GetOutputPort());
  this->SphereActor = vtkActor::New();
  this->SphereActor->SetMapper(this->SphereMapper);

  // controls
  this->Translation = 1;
  this->Scale = 1;

  // handles
  this->HandleVisibility = 0;
  this->HandleDirection[0] = 1.0;
  this->HandleDirection[1] = 0.0;
  this->HandleDirection[2] = 0.0;
  this->HandleSource = vtkSphereSource::New();
  this->HandleSource->SetThetaResolution(16);
  this->HandleSource->SetPhiResolution(8);
  this->HandleMapper = vtkPolyDataMapper::New();
  this->HandleMapper->SetInputConnection(this->HandleSource->GetOutputPort());
  this->HandleActor = vtkActor::New();
  this->HandleActor->SetMapper(this->HandleMapper);

  // Define the point coordinates
  double bounds[6];
  bounds[0] = -0.5;
  bounds[1] = 0.5;
  bounds[2] = -0.5;
  bounds[3] = 0.5;
  bounds[4] = -0.5;
  bounds[5] = 0.5;

  // Initial creation of the widget, serves to initialize it
  this->PlaceWidget(bounds);

  // Manage the picking stuff
  this->Picker = vtkCellPicker::New();
  this->Picker->SetTolerance(0.005); // need some fluff
  this->Picker->AddPickList(this->SphereActor);
  this->Picker->AddPickList(this->HandleActor);
  this->Picker->PickFromListOn();

  // Set up the initial properties
  this->SphereProperty = nullptr;
  this->SelectedSphereProperty = nullptr;
  this->HandleProperty = nullptr;