Method UpdateElevationMyPosition

libs/map/bookmark_manager.cpp:810–849

}

void BookmarkManager::UpdateElevationMyPosition(kml::TrackId const & trackId)
{
  CHECK_THREAD_CHECKER(m_threadChecker, ());

  static_assert(TrackSelectionMark::kInvalidDistance < 0);
  double myPositionDistance = TrackSelectionMark::kInvalidDistance;
  if (m_myPositionMark->HasPosition())
  {
    double constexpr kEps = 1e-5;
    if (m_lastElevationMyPosition.EqualDxDy(m_myPositionMark->GetPivot(), kEps))
      return;
    m_lastElevationMyPosition = m_myPositionMark->GetPivot();

    auto const snapRect =
        mercator::RectByCenterXYAndSizeInMeters(m_myPositionMark->GetPivot(), kMyPositionTrackSnapInMeters);
    auto const selectionInfo =
        FindNearestTrack(snapRect, [trackId](Track const * track) { return track->GetId() == trackId; });
    if (selectionInfo.m_trackId == trackId)
      myPositionDistance = selectionInfo.m_distFromBegM;
  }
  else
  {
    m_lastElevationMyPosition = m2::PointD::Zero();
  }

  auto const markId = GetTrackSelectionMarkId(trackId);
  if (markId == kml::kInvalidTrackId)
    return;

  auto es = GetEditSession();
  auto trackSelectionMark = GetMarkForEdit<TrackSelectionMark>(markId);

  double constexpr kEpsMeters = 1e-2;
  if (!AlmostEqualAbs(trackSelectionMark->GetMyPositionDistance(), myPositionDistance, kEpsMeters))
  {
    trackSelectionMark->SetMyPositionDistance(myPositionDistance);
    if (m_elevationMyPositionChanged)
      m_elevationMyPositionChanged();
  }
}

double BookmarkManager::GetElevationMyPosition(kml::TrackId const & trackId) const
{