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Added SrtmTileManager::GetTriangleHeight.

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Signed-off-by: Viktor Govako <viktor.govako@gmail.com>
This commit is contained in:
Viktor Govako
2023-07-31 21:25:52 -03:00
committed by Konstantin Pastbin
parent 58ea819936
commit c05b668e38
10 changed files with 531 additions and 155 deletions
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38
generator/srtm_parser.hpp
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@@ -17,29 +17,40 @@ namespace generator
class SrtmTile
{
public:
SrtmTile();
SrtmTile() : m_valid(false) {}
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.
/// @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;
/// @}
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);
/// 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::string m_data;
std::vector<uint8_t> m_data;
bool m_valid;
DISALLOW_COPY(SrtmTile);
@@ -48,12 +59,22 @@ private:
class SrtmTileManager
{
public:
explicit SrtmTileManager(std::string const & dir);
geometry::Altitude GetHeight(ms::LatLon const & coord);
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);
}
void Purge();
private:
using LatLonKey = std::pair<int32_t, int32_t>;
static LatLonKey GetKey(ms::LatLon const & coord);
@@ -68,7 +89,8 @@ private:
}
};
std::unordered_map<LatLonKey, SrtmTile, Hash> m_tiles;
using MapT = std::unordered_map<LatLonKey, SrtmTile, Hash>;
MapT m_tiles;
DISALLOW_COPY(SrtmTileManager);
};