Method OnLeftButtonDown

Interaction/Widgets/vtkBoxWidget.cxx:554–608

}

void vtkBoxWidget::OnLeftButtonDown()
{
  int X = this->Interactor->GetEventPosition()[0];
  int Y = this->Interactor->GetEventPosition()[1];

  // Okay, we can process this. Try to pick handles first;
  // if no handles picked, then pick the bounding box.
  if (!this->CurrentRenderer || !this->CurrentRenderer->IsInViewport(X, Y))
  {
    this->State = vtkBoxWidget::Outside;
    return;
  }

  vtkAssemblyPath* path = this->GetAssemblyPath(X, Y, 0., this->HandlePicker);

  if (path != nullptr)
  {
    this->State = vtkBoxWidget::Moving;
    this->HighlightFace(this->HighlightHandle(path->GetFirstNode()->GetViewProp()));
    this->HandlePicker->GetPickPosition(this->LastPickPosition);
    this->ValidPick = 1;
  }
  else
  {
    path = this->GetAssemblyPath(X, Y, 0., this->HexPicker);

    if (path != nullptr)
    {
      this->State = vtkBoxWidget::Moving;
      this->HexPicker->GetPickPosition(this->LastPickPosition);
      this->ValidPick = 1;
      if (!this->Interactor->GetShiftKey())
      {
        this->HighlightHandle(nullptr);
        this->HighlightFace(this->HexPicker->GetCellId());
      }
      else
      {
        this->CurrentHandle = this->Handle[6];
        this->HighlightOutline(1);
      }
    }
    else
    {
      this->HighlightFace(this->HighlightHandle(nullptr));
      this->State = vtkBoxWidget::Outside;
      return;
    }
  }

  this->EventCallbackCommand->SetAbortFlag(1);
  this->StartInteraction();
  this->InvokeEvent(vtkCommand::StartInteractionEvent, nullptr);
  this->Interactor->Render();
}

void vtkBoxWidget::OnLeftButtonUp()
{