Method SubclassHoverAction

Interaction/Widgets/vtkBalloonWidget.cxx:292–322

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//------------------------------------------------------------------------------
int vtkBalloonWidget::SubclassHoverAction()
{
  double e[2];
  e[0] = static_cast<double>(this->Interactor->GetEventPosition()[0]);
  e[1] = static_cast<double>(this->Interactor->GetEventPosition()[1]);
  if (this->CurrentProp)
  {
    this->CurrentProp->UnRegister(this);
    this->CurrentProp = nullptr;
  }

  vtkAssemblyPath* path = this->GetAssemblyPath(e[0], e[1], 0., this->Picker);

  if (path != nullptr)
  {
    vtkPropMapIterator iter = this->PropMap->find(path->GetFirstNode()->GetViewProp());
    if (iter != this->PropMap->end())
    {
      this->CurrentProp = (*iter).first;
      this->CurrentProp->Register(this);
      reinterpret_cast<vtkBalloonRepresentation*>(this->WidgetRep)
        ->SetBalloonText((*iter).second.Text.c_str());
      reinterpret_cast<vtkBalloonRepresentation*>(this->WidgetRep)
        ->SetBalloonImage((*iter).second.Image);
      this->WidgetRep->StartWidgetInteraction(e);
      this->Render();
    }
  }

  return 1;
}

//------------------------------------------------------------------------------
int vtkBalloonWidget::SubclassEndHoverAction()