Method VisualizeMwmsBordersInRect

qt/draw_widget.cpp:314–369

}

void DrawWidget::VisualizeMwmsBordersInRect(m2::RectD const & rect, bool withVertices, bool fromPackedPolygon,
                                            bool boundingBox)
{
  auto const getRegions = [&](std::string const & mwmName)
  {
    if (fromPackedPolygon)
    {
      std::vector<storage::CountryDef> countries;
      FilesContainerR reader(base::JoinPath(GetPlatform().ResourcesDir(), PACKED_POLYGONS_FILE));
      ReaderSource<ModelReaderPtr> src(reader.GetReader(PACKED_POLYGONS_INFO_TAG));
      rw::Read(src, countries);

      for (size_t id = 0; id < countries.size(); ++id)
      {
        if (countries[id].m_countryId != mwmName)
          continue;

        src = reader.GetReader(std::to_string(id));
        return borders::ReadPolygonsOfOneBorder(src);
      }

      UNREACHABLE();
    }
    else
    {
      std::string const bordersDir = base::JoinPath(GetPlatform().WritableDir(), BORDERS_DIR);
      std::string const path = base::JoinPath(bordersDir, mwmName + BORDERS_EXTENSION);

      std::vector<m2::RegionD> polygons;
      borders::LoadBorders(path, polygons);
      return polygons;
    }
  };

  auto mwmNames = m_framework.GetRegionsCountryIdByRect(rect, false /* rough */);

  for (auto & mwmName : mwmNames)
  {
    auto regions = getRegions(mwmName);
    mwmName += fromPackedPolygon ? ".bin" : ".poly";
    if (boundingBox)
    {
      std::vector<m2::RegionD> boxes;
      for (auto const & region : regions)
      {
        auto const r = region.GetRect();
        boxes.emplace_back(
            std::vector<m2::PointD>({r.LeftBottom(), r.LeftTop(), r.RightTop(), r.RightBottom(), r.LeftBottom()}));
      }

      regions = std::move(boxes);
      mwmName += ".box";
    }
    DrawMwmBorder(m_framework.GetDrapeApi(), mwmName, regions, withVertices);
  }
}

void DrawWidget::mouseReleaseEvent(QMouseEvent * e)