Repo created

libs/storage/country_info_reader_light.cpp

@@ -0,0 +1,81 @@
+#include "storage/country_info_reader_light.hpp"
+
+#include "storage/country_decl.hpp"
+
+#include "platform/platform.hpp"
+#include "platform/preferred_languages.hpp"
+
+#include "coding/file_reader.hpp"
+#include "coding/geometry_coding.hpp"
+#include "coding/read_write_utils.hpp"
+
+#include "geometry/region2d.hpp"
+
+#include "base/file_name_utils.hpp"
+#include "base/logging.hpp"
+#include "base/string_utils.hpp"
+
+#include <chrono>
+#include <utility>
+#include <vector>
+
+#include "defines.hpp"
+
+namespace lightweight
+{
+CountryInfoReader::CountryInfoReader()
+{
+  try
+  {
+    m_reader = std::make_unique<FilesContainerR>(GetPlatform().GetReader(PACKED_POLYGONS_FILE));
+    ReaderSource<ModelReaderPtr> src(m_reader->GetReader(PACKED_POLYGONS_INFO_TAG));
+    rw::Read(src, m_countries);
+  }
+  catch (FileReader::Exception const & exception)
+  {
+    LOG(LERROR, ("Exception while reading file:", PACKED_POLYGONS_FILE, "reason:", exception.what()));
+
+    m_reader.reset();
+    m_countries.clear();
+  }
+
+  m_nameGetter.SetLocale(languages::GetCurrentTwine());
+}
+
+void CountryInfoReader::LoadRegionsFromDisk(size_t id, std::vector<m2::RegionD> & regions) const
+{
+  regions.clear();
+  ReaderSource<ModelReaderPtr> src(m_reader->GetReader(strings::to_string(id)));
+
+  uint32_t const count = ReadVarUint<uint32_t>(src);
+  for (size_t i = 0; i < count; ++i)
+  {
+    std::vector<m2::PointD> points;
+    serial::LoadOuterPath(src, serial::GeometryCodingParams(), points);
+    regions.emplace_back(std::move(points));
+  }
+}
+
+bool CountryInfoReader::BelongsToRegion(m2::PointD const & pt, size_t id) const
+{
+  if (!m_countries[id].m_rect.IsPointInside(pt))
+    return false;
+
+  std::vector<m2::RegionD> regions;
+  LoadRegionsFromDisk(id, regions);
+
+  for (auto const & region : regions)
+    if (region.Contains(pt))
+      return true;
+
+  return false;
+}
+
+CountryInfoReader::Info CountryInfoReader::GetMwmInfo(m2::PointD const & pt) const
+{
+  Info info;
+  info.m_id = GetRegionCountryId(pt);
+  info.m_name = m_nameGetter(info.m_id);
+  return info;
+}
+}  // namespace lightweight