Method OnLeftButtonDown

Interaction/Widgets/vtkPointWidget.cxx:292–324

}

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

  // Okay, make sure that the pick is in the current renderer
  if (!this->CurrentRenderer || !this->CurrentRenderer->IsInViewport(X, Y))
  {
    this->State = vtkPointWidget::Outside;
    return;
  }

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

  if (path != nullptr)
  {
    this->State = vtkPointWidget::Moving;
    this->Highlight(1);
    this->ConstraintAxis = this->DetermineConstraintAxis(-1, nullptr);
  }
  else
  {
    this->State = vtkPointWidget::Outside;
    this->Highlight(0);
    this->ConstraintAxis = -1;
    return;
  }

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

void vtkPointWidget::OnLeftButtonUp()
{