Method UpdateSelectionInfo

libs/map/track.cpp:122–151

}

void Track::UpdateSelectionInfo(m2::RectD const & touchRect, TrackSelectionInfo & info) const
{
  if (m_interactionData && !m_interactionData->m_limitRect.IsIntersect(touchRect))
    return;

  for (size_t lineIndex = 0; lineIndex < m_data.m_geometry.m_lines.size(); ++lineIndex)
  {
    auto const & line = m_data.m_geometry.m_lines[lineIndex];
    for (size_t ptIndex = 0; ptIndex + 1 < line.size(); ++ptIndex)
    {
      auto pt1 = line[ptIndex].GetPoint();
      auto pt2 = line[ptIndex + 1].GetPoint();
      if (!m2::Intersect(touchRect, pt1, pt2))
        continue;

      m2::ParametrizedSegment<m2::PointD> seg(pt1, pt2);
      auto const closestPoint = seg.ClosestPointTo(touchRect.Center());
      auto const squaredDist = closestPoint.SquaredLength(touchRect.Center());
      if (squaredDist >= info.m_squareDist)
        continue;

      info.m_squareDist = squaredDist;
      info.m_trackId = m_data.m_id;
      info.m_trackPoint = closestPoint;

      auto const segDistInMeters = mercator::DistanceOnEarth(line[ptIndex].GetPoint(), closestPoint);
      info.m_distFromBegM = segDistInMeters + GetLengthMetersImpl(lineIndex, ptIndex);
    }
  }
}

df::DepthLayer Track::GetDepthLayer() const
{