mirror of
https://github.com/felt/tippecanoe.git
synced 2026-10-02 16:35:40 +02:00
Erica Fischer
f7dc7faf31
* Crunch down memory required per polygon joint * *Actually* reduce the size of the structure * Update version and changelog
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
#ifndef MBTILES_HPP
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#define MBTILES_HPP
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#include <math.h>
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#include <map>
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#include "mvt.hpp"
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extern size_t max_tilestats_attributes;
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extern size_t max_tilestats_sample_values;
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extern size_t max_tilestats_values;
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struct type_and_string {
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int type = 0;
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std::string string = "";
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bool operator<(const type_and_string &o) const;
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bool operator!=(const type_and_string &o) const;
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};
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struct type_and_string_stats {
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std::vector<type_and_string> sample_values = std::vector<type_and_string>(); // sorted
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double min = INFINITY;
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double max = -INFINITY;
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int type = 0;
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};
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struct layermap_entry {
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size_t id = 0;
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std::map<std::string, type_and_string_stats> file_keys{};
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int minzoom = 0;
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int maxzoom = 0;
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std::string description = "";
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size_t points = 0;
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size_t lines = 0;
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size_t polygons = 0;
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size_t retain = 0; // keep for tilestats, even if no features directly here
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layermap_entry(size_t _id) {
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id = _id;
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}
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};
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struct metadata {
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std::string name;
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std::string description;
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int version;
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std::string type;
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std::string format;
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int minzoom;
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int maxzoom;
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double minlat, minlon, maxlat, maxlon;
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double minlat2, minlon2, maxlat2, maxlon2; // antimeridian-aware
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double center_lon, center_lat;
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int center_z;
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std::string attribution; // not written if empty
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std::string generator;
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std::string generator_options;
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std::string strategies_json; // not written if empty
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std::string vector_layers_json;
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std::string tilestats_json;
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};
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#include "tile.hpp"
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sqlite3 *mbtiles_open(char *dbname, char **argv, int forcetable);
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void mbtiles_write_tile(sqlite3 *outdb, int z, int tx, int ty, const char *data, int size);
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void mbtiles_erase_zoom(sqlite3 *outdb, int z);
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metadata make_metadata(const char *fname, int minzoom, int maxzoom, double minlat, double minlon, double maxlat, double maxlon, double minlat2, double minlon2, double maxlat2, double maxlon2, double midlat, double midlon, const char *attribution, std::map<std::string, layermap_entry> const &layermap, bool vector, const char *description, bool do_tilestats, std::map<std::string, std::string> const &attribute_descriptions, std::string const &program, std::string const &commandline, std::vector<strategy> const &strategies);
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void mbtiles_write_metadata(sqlite3 *db, const metadata &m, bool forcetable);
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void mbtiles_close(sqlite3 *outdb, const char *pgm);
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std::map<std::string, layermap_entry> merge_layermaps(std::vector<std::map<std::string, layermap_entry> > const &maps);
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std::map<std::string, layermap_entry> merge_layermaps(std::vector<std::map<std::string, layermap_entry> > const &maps, bool trunc);
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void add_to_file_keys(std::map<std::string, type_and_string_stats> &file_keys, std::string const &layername, type_and_string const &val);
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unsigned long long fnv1a(std::string const &s);
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#endif
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