mirror of
https://codeberg.org/comaps/comaps
synced 2025-12-19 04:53:36 +00:00
105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
#pragma once
|
|
|
|
#include "geometry/latlon.hpp"
|
|
|
|
#include "geometry/point_with_altitude.hpp"
|
|
|
|
#include "base/macros.hpp"
|
|
|
|
#include <boost/container_hash/hash.hpp>
|
|
|
|
#include <cstdint>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
|
|
namespace generator
|
|
{
|
|
class SrtmTile
|
|
{
|
|
public:
|
|
SrtmTile() : m_valid(false) {}
|
|
SrtmTile(SrtmTile && rhs);
|
|
|
|
void Init(std::string const & dir, ms::LatLon const & coord);
|
|
|
|
inline bool IsValid() const { return m_valid; }
|
|
/// @return Height in meters at |coord| or kInvalidAltitude.
|
|
/// @{
|
|
/// Nearest serialized height.
|
|
geometry::Altitude GetHeight(ms::LatLon const & coord) const;
|
|
/// Height from underlying triangle (better than GetHeight).
|
|
geometry::Altitude GetTriangleHeight(ms::LatLon const & coord) const;
|
|
/// @}
|
|
|
|
using LatLonKey = std::pair<int32_t, int32_t>;
|
|
static LatLonKey GetKey(ms::LatLon const & coord);
|
|
|
|
static std::string GetBase(ms::LatLon const & coord);
|
|
static std::string GetPath(std::string const & dir, std::string const & base);
|
|
|
|
/// Used in unit tests only to prepare mock tile.
|
|
geometry::Altitude * DataForTests(size_t & sz);
|
|
|
|
private:
|
|
static ms::LatLon GetCoordInSeconds(ms::LatLon const & coord);
|
|
geometry::Altitude GetHeightRC(size_t row, size_t col) const;
|
|
|
|
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::vector<uint8_t> m_data;
|
|
bool m_valid;
|
|
|
|
DISALLOW_COPY(SrtmTile);
|
|
};
|
|
|
|
class SrtmTileManager
|
|
{
|
|
public:
|
|
explicit SrtmTileManager(std::string const & dir) : m_dir(dir) {}
|
|
|
|
SrtmTile const & GetTile(ms::LatLon const & coord);
|
|
|
|
geometry::Altitude GetHeight(ms::LatLon const & coord)
|
|
{
|
|
return GetTile(coord).GetHeight(coord);
|
|
}
|
|
|
|
geometry::Altitude GetTriangleHeight(ms::LatLon const & coord)
|
|
{
|
|
return GetTile(coord).GetTriangleHeight(coord);
|
|
}
|
|
|
|
size_t GeTilesNumber() const { return m_tiles.size(); }
|
|
|
|
void Purge();
|
|
|
|
private:
|
|
std::string m_dir;
|
|
|
|
struct Hash
|
|
{
|
|
size_t operator()(SrtmTile::LatLonKey const & key) const
|
|
{
|
|
size_t seed = 0;
|
|
boost::hash_combine(seed, key.first);
|
|
boost::hash_combine(seed, key.second);
|
|
return seed;
|
|
}
|
|
};
|
|
|
|
using MapT = std::unordered_map<SrtmTile::LatLonKey, SrtmTile, Hash>;
|
|
MapT m_tiles;
|
|
|
|
DISALLOW_COPY(SrtmTileManager);
|
|
};
|
|
} // namespace generator
|