mirror of
https://github.com/felt/tippecanoe.git
synced 2026-10-02 08:25:40 +02:00
Danila Poyarkov
53b98d76c4
Integrate the C++ MLT encoder from maplibre-tile-spec as a submodule. Tiles are encoded by converting the existing mvt_tile to mlt::Encoder::Layer and calling the encoder library directly. New CLI flags: --output-format=mlt Encode tiles as MLT instead of MVT --pretessellate Pre-triangulate polygons (MLT only) --no-mlt-feature-sort Disable within-tile Hilbert sorting (MLT only) MLT tiles use .mlt extension in directory output and format=mlt in mbtiles metadata. Compression and all existing flags work unchanged.
83 lines
2.6 KiB
C++
83 lines
2.6 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 tilestat {
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std::vector<serial_val> sample_values = std::vector<serial_val>(); // 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, tilestat> tilestats{};
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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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std::string decisions_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, const char *tile_format, 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, int basezoom, double droprate, int retain_points_multiplier);
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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_tilestats(std::map<std::string, tilestat> &tilestats, std::string const &layername, serial_val const &val);
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std::string version_str();
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#endif
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