Method IsFencedOff

libs/routing/index_router.cpp:1181–1213

static

// static
bool IndexRouter::PointsOnEdgesSnapping::IsFencedOff(m2::PointD const & point, EdgeProjectionT const & edgeProjection,
                                                     vector<RoadInfoT> const & fences)
{
  auto const & edge = edgeProjection.first;
  auto const & projPoint = edgeProjection.second.GetPoint();

  for (auto const & fence : fences)
  {
    auto const & featureGeom = fence.m_roadInfo.m_junctions;
    for (size_t i = 1; i < featureGeom.size(); ++i)
    {
      auto const & fencePointFrom = featureGeom[i - 1];
      auto const & fencePointTo = featureGeom[i];
      if (IsTheSameSegments(fencePointFrom.GetPoint(), fencePointTo.GetPoint(), edge.GetStartPoint(),
                            edge.GetEndPoint()))
      {
        continue;
      }

      // If two segment are connected with its ends it's also considered as an
      // intersection according to m2::SegmentsIntersect(). On the other hand
      // it's possible that |projPoint| is an end point of |edge| and |edge|
      // is connected with other edges. To prevent fencing off such edges with their
      // neighboring edges the condition !m2::IsPointOnSegment() is added.
      if (m2::SegmentsIntersect(point, projPoint, fencePointFrom.GetPoint(), fencePointTo.GetPoint()) &&
          !m2::IsPointOnSegment(projPoint, fencePointFrom.GetPoint(), fencePointTo.GetPoint()))
      {
        return true;
      }
    }
  }
  return false;
}

// static
void IndexRouter::PointsOnEdgesSnapping::RoadsToNearestEdges(m2::PointD const & point, vector<RoadInfoT> const & roads,