Method FindTopmostVisibleNode

Modules/Core/src/DataManagement/mitkDataStorage.cpp:623–694

}

mitk::DataNode::Pointer mitk::FindTopmostVisibleNode(const DataStorage::SetOfObjects::ConstPointer nodes,
                                                     const Point3D worldPosition,
                                                     const TimePointType timePoint,
                                                     const BaseRenderer* baseRender)
{
   if (nodes.IsNull())
  {
    return nullptr;
  }

  mitk::DataNode::Pointer topLayerNode = nullptr;
  int maxLayer = std::numeric_limits<int>::min();

  for (const auto &node : *nodes)
  {
    if (node.IsNull())
    {
      continue;
    }

    bool isHelperObject = false;
    node->GetBoolProperty("helper object", isHelperObject);
    if (isHelperObject)
    {
      continue;
    }

    auto data = node->GetData();
    if (nullptr == data)
    {
      continue;
    }

    auto geometry = data->GetGeometry();
    if (nullptr == geometry || !geometry->IsInside(worldPosition))
    {
      continue;
    }

    auto timeGeometry = data->GetUpdatedTimeGeometry();
    if (nullptr == timeGeometry)
    {
      continue;
    }

    if (!timeGeometry->IsValidTimePoint(timePoint))
    {
      continue;
    }

    int layer = 0;
    if (!node->GetIntProperty("layer", layer, baseRender))
    {
      continue;
    }

    if (layer <= maxLayer)
    {