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47 lines
1.0 KiB
C++
47 lines
1.0 KiB
C++
#pragma once
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#include <map>
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#include <vector>
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#include <Core/Types.h>
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namespace DB
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{
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size_t geohashEncode(Float64 longitude, Float64 latitude, uint8_t precision, char * out);
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void geohashDecode(const char * encoded_string, size_t encoded_len, Float64 * longitude, Float64 * latitude);
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std::vector<std::pair<Float64, Float64>> geohashCoverBox(
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Float64 longitude_min,
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Float64 latitude_min,
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Float64 longitude_max,
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Float64 latitude_max,
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uint8_t precision,
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UInt32 max_items = 0);
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struct GeohashesInBoxPreparedArgs
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{
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UInt64 items_count = 0;
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uint8_t precision = 0;
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Float64 longitude_min = 0.0;
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Float64 latitude_min = 0.0;
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Float64 longitude_max = 0.0;
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Float64 latitude_max = 0.0;
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Float64 longitude_step = 0.0;
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Float64 latitude_step = 0.0;
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};
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GeohashesInBoxPreparedArgs geohashesInBoxPrepare(
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const Float64 longitude_min,
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const Float64 latitude_min,
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Float64 longitude_max,
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Float64 latitude_max,
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uint8_t precision);
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UInt64 geohashesInBox(const GeohashesInBoxPreparedArgs & args, char * out);
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}
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