Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

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generator/srtm_parser.hpp

@@ -0,0 +1,75 @@
+#pragma once
+
+#include "geometry/latlon.hpp"
+
+#include "indexer/feature_altitude.hpp"
+
+#include "geometry/point_with_altitude.hpp"
+
+#include "base/macros.hpp"
+
+#include <cstdint>
+#include <string>
+#include <unordered_map>
+
+namespace generator
+{
+class SrtmTile
+{
+public:
+  SrtmTile();
+  SrtmTile(SrtmTile && rhs);
+
+  void Init(std::string const & dir, ms::LatLon const & coord);
+
+  inline bool IsValid() const { return m_valid; }
+  // Returns height in meters at |coord| or kInvalidAltitude.
+  geometry::Altitude GetHeight(ms::LatLon const & coord) const;
+
+  static std::string GetBase(ms::LatLon const & coord);
+  static ms::LatLon GetCenter(ms::LatLon const & coord);
+  static std::string GetPath(std::string const & dir, std::string const & base);
+
+private:
+  inline geometry::Altitude const * Data() const
+  {
+    return reinterpret_cast<geometry::Altitude const *>(m_data.data());
+  };
+
+  inline size_t Size() const { return m_data.size() / sizeof(geometry::Altitude); }
+  void Invalidate();
+
+  std::string m_data;
+  bool m_valid;
+
+  DISALLOW_COPY(SrtmTile);
+};
+
+class SrtmTileManager
+{
+public:
+  explicit SrtmTileManager(std::string const & dir);
+
+  geometry::Altitude GetHeight(ms::LatLon const & coord);
+
+  SrtmTile const & GetTile(ms::LatLon const & coord);
+
+private:
+  using LatLonKey = std::pair<int32_t, int32_t>;
+  static LatLonKey GetKey(ms::LatLon const & coord);
+
+  std::string m_dir;
+
+  struct Hash
+  {
+    size_t operator()(LatLonKey const & key) const
+    {
+      return (static_cast<size_t>(key.first) << 32u) | static_cast<size_t>(key.second);
+    }
+  };
+
+  std::unordered_map<LatLonKey, SrtmTile, Hash> m_tiles;
+
+  DISALLOW_COPY(SrtmTileManager);
+};
+}  // namespace generator