Add MLT (MapLibre Tile) output format

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.
This commit is contained in:
Danila Poyarkov
2026-07-02 17:29:24 +03:00
parent 7fc82a1796
commit 53b98d76c4
15 changed files with 309 additions and 16 deletions
+1 -1
View File
@@ -6,7 +6,7 @@
#ifndef DIRTILES_HPP
#define DIRTILES_HPP
void dir_write_tile(const char *outdir, int z, int tx, int ty, std::string const &pbf);
void dir_write_tile(const char *outdir, int z, int tx, int ty, std::string const &pbf, const char *ext = ".pbf");
void dir_erase_zoom(const char *outdir, int z);
void dir_write_metadata(const char *outdir, const metadata &m);