Method AddPoint

Modules/Core/src/Interactions/mitkPointSetDataInteractor.cpp:44–118

}

void mitk::PointSetDataInteractor::AddPoint(StateMachineAction *stateMachineAction, InteractionEvent *interactionEvent)
{
  unsigned int timeStep = interactionEvent->GetSender()->GetTimeStep(GetDataNode()->GetData());
  ScalarType timeInMs = interactionEvent->GetSender()->GetTime();

  // disallow adding of new points if maximum number of points is reached
  if (m_MaxNumberOfPoints > 1 && m_PointSet->GetSize(timeStep) >= m_MaxNumberOfPoints)
  {
    return;
  }
  // To add a point the minimal information is the position, this method accepts all InteractionsPositionEvents
  auto *positionEvent = dynamic_cast<InteractionPositionEvent *>(interactionEvent);
  if (positionEvent != nullptr)
  {
    mitk::Point3D itkPoint = positionEvent->GetPositionInWorld();

    if (m_Bounds.IsNotNull())
    {
      if (!m_Bounds->IsInside(itkPoint))
        return; // Disallow adding new points outside of the required bounds.
    }

    this->UnselectAll(timeStep, timeInMs);

    int lastPosition = 0;
    mitk::PointSet::PointsIterator it, end;
    it = m_PointSet->Begin(timeStep);
    end = m_PointSet->End(timeStep);
    while (it != end)
    {
      if (!m_PointSet->IndexExists(lastPosition, timeStep))
        break;
      ++it;
      ++lastPosition;
    }

    // Insert a Point to the PointSet
    // 2) Create the Operation inserting the point
	if (m_PointSet->IsEmpty()) { lastPosition = 0; }
    auto *doOp = new mitk::PointOperation(OpINSERT, timeInMs, itkPoint, lastPosition);

    // 3) If Undo is enabled, also create the inverse Operation
    if (m_UndoEnabled)
    {
      auto *undoOp = new mitk::PointOperation(OpREMOVE, timeInMs, itkPoint, lastPosition);
      // 4) Do and Undo Operations are combined in an Operation event which also contains the target of the operations
      // (here m_PointSet)
      OperationEvent *operationEvent = new OperationEvent(m_PointSet, doOp, undoOp, "Add point");
      // 5) Store the Operation in the UndoController
      OperationEvent::IncCurrObjectEventId();
      m_UndoController->SetOperationEvent(operationEvent);
    }

    // 6) Execute the Operation performs the actual insertion of the point into the PointSet
    m_PointSet->ExecuteOperation(doOp);

    // 7) If Undo is not enabled the Do-Operation is to be dropped to prevent memory leaks.
    if (!m_UndoEnabled)