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.
* Clip before dealing with multiplier or filters in overzoom
* Be more careful to retry when the feature count is exceeded
* Adjust the estimated total feature count for the multiplier too
* Fix the feature count estimates, I think
* Pass build info into the version string
* Report the actual max zoom of any tiles as the metadata maxzoom
* Revert unneeded renaming to make the diff more readable
* Clean up the adjustments to tile sizes and feature counts
* Update version and changelog
* Dropping a feature into a multiplier cluster still effectively drops it
* Update changelog
* Rethink the changelog description
* Don't try to truncate zooms if we are still tiling at z18
* Add a way to run tippecanoe single-threaded for profiling
* Do less work when the tilestats sample values list is already full
* Save a copy when retrieving the attribute key
* Fewer atomic operations
* Move string hashing from mbtiles to text
* Only do approximate attribute deduplication when writing tiles
* Feature dropping tests are sensitive to exact tile size
* All tile creators now create a string pool for the tile
* Features clipped away to nothing should not participate in that tile
* Revert "Only do approximate attribute deduplication when writing tiles"
This reverts commit c42b34b498.
* Also revert the related test changes
* Revert "Revert "Only do approximate attribute deduplication when writing tiles""
This reverts commit 18509876c3.
* Be more specific about the string hash function
* Use fnv1a instead of std::hash for everything
* Reduce the chance of hash collisions
* Stick a hash search on the front of the tree search in addpool
* Eliminate repeated hashing of the same string
* Switch instead of ifs in json parsing
* A few more cases to populate the hash in addpool
* Store the hash in the tree instead of recalculating
* Add explanatory comment for mysterious argument
* Fewer copies in attribute stringification
* Clean up ancient weirdness in JSON attribute stringification
* More serial_val cleanup
* Pass a serial_feature to rewrite instead of many broken-down arguments
* Get rid of the multiple geometries within `partial`
* Revert "Pass a serial_feature to rewrite instead of many broken-down arguments"
This reverts commit 6f4ab9b725.
* Goodbye, struct coalesce
* Revert "Features clipped away to nothing should not participate in that tile"
This reverts commit 124462fbdc.
* Migrating fields from partial to serial_feature
* Name reconciliation between serial_feature and partial
* Replace struct partial with an augmented serial_feature
* Fix some overzealous search-and-replace renaming
* Don't say struct so often
* Remove more of the former partial construction
* Commenting and cleaning up
* Trying again to avoid all these arguments to rewrite
* I swear I did this same thing before and it didn't work.
* More rewrite cleanup
* Exile --detect-shared-borders to its own file
* Add missing headers
* More commenting and cleanup
* More comments
* Sprinkle consts around
* Emplacing and std::moving
* More cleanup
* That shouldn't have worked after a std::move
* Don't need to allocate memory to compare keys
* Reduce use of the global string pool in tiling
* Another avoidable mvt_value construction
* Further reduction to explicit string pool passing
* These reverses are no longer optimizations
* These layernames can all be references
* Don't drag an unused layername string around with every feature
* Heed a compiler warning about potential buffer overflow
* Fix my confusion about which feature's string pool is relevant
* Avoid some unnecessary allocations in attribute accumulation
* Maybe faster serialization?
* Eliminate a comparison
* Do the same here
* Save a couple of allocations when parsing numbers in JSON
* Immediately assign features to layers instead of subdividing later
* Maintain tilestats for tippecanoe:retain_points_multiplier_sequence
* Crunch out more duplicate attribute values when writing out the tile
* Do tilestats for tippecanoe:retain_points_multiplier_first too
* Shell filters need to be real threads, even if nothing else does
* Simplify tippecanoe_minzoom/maxzoom representation
* Update version and changelog
* Get rid of the type_and_string near-synonym for serial_val
* Rename file_keys to the more familiar tilestats
* "tas" (type_and_string) => "sv" (serial_val)
* "fk" (tile_keys) => "ts" (tilestats)
* Revert ""tas" (type_and_string) => "sv" (serial_val)"
This reverts commit 4854c57e22.
* More carefully this time: "tas" (type_and_string) => "sv" (serial_val)
* Add an option to retain N times as many points as usual at each zoom
* Tests for point multipler with specified and guessed maxzooms
* Work in progress on inverse spatial ordering
* Fix inverse spatial feature order
* --reorder was depending on a feature index that wasn't being preserved
* Separate ordering by feature_minzoom from ordering inverse-spatially
* Add a test for the inverse spatial ordering
* Store the basezoom/droprate/multiplier decisions in tileset metadata
* Progress on adding filters to tippecanoe-overzoom
* Type promotion for comparison
* Look up the attribute value for ordering
* Add test of thinning and ordering features
* Plumb tippecanoe_decisions metadata through pmtiles
* Be careful not to put infinities in JSON
* Fix accidental dropping in what is meant to preserve sparse points
* Start distinguishing true, false, and null in expressions
* Most of the type conversions
* Add boolean conversions
* Literals and conjunctions
* Add filtering to tippecanoe-overzoom
* Add a test of filtering in overzoom
* Fix boolean conjunctions
* Handle the combination of cluster size and filtering
* Rework dot dropping to reconcile density threshold and multiplier
* Revert "Rework dot dropping to reconcile density threshold and multiplier"
This reverts commit f253a66382.
* Retain points by multiplier within each tile, not in global probability
* Test that intends to verify that the multiplier is reversible
* Get the test to detect the discrepancy
* Mark the start of multiplier clusters with a magic attribute
* Add string-contains
* Add in and ni operators
* Revert "Look up the attribute value for ordering"
This reverts commit 56bc73e49a.
* Revert "Type promotion for comparison"
This reverts commit 6f3256f5af.
* Make number formatting in tippecanoe_decisions consistent
* Revert "Add a test for the inverse spatial ordering"
This reverts commit c8047de9ab.
* Revert "Separate ordering by feature_minzoom from ordering inverse-spatially"
This reverts commit 35b19a223c.
* Revert "Fix inverse spatial feature order"
This reverts commit 5978ecdb44.
* Revert "Work in progress on inverse spatial ordering"
This reverts commit fdf230f632.
* Somehow missed the tests associated with that last revert
* Round-robin assign attributes to partials from across the multiplier
* Count the multiplier separately in each layer
* Fix distribution of accumulated attribute across multiplier features
* Update changelog, version, and docs
* Add "is null" and "isnt null" expressions
* Update interpretation of FSL expressions to pass the tests
* Test to assert that polygons are unaffected by the multiplier
* Clean up and comment
* Remove accidental unused case
* Calculate a new antimeridian-adjusted bounding box
* Add antimeridian bounding box to pmtiles, dirtiles, and tile-join
* Don't take out-of-bounds latitudes into account in the adjusted bbox
* Update changelog
* Forgot to adjust tests after the last change
* add pmtiles.hpp from github.com/protomaps/PMTiles [#10]
* tippecanoe main writes pmtiles output. [#10]
* detect output format using suffix
* after mbtiles is done writing, replace with pmtiles based on map/image tables.
* add method to write_json for writing json sub-object.
* tippecanoe-decode reads pmtiles input. [#10]
* tile-join reads and writes pmtiles. [#10]
* pmtiles test suite for decode and tile-join [#10]
* add base GitHub CI action for compiling and test suite.
* update pmtiles.hpp with z>15 fix
* Fix some ordering problems with pmtiles decode
* Pmtiles should also pass the raw tiles tests
* Eradicate spaces from tileset metadata JSON fields
* Eradicate spaces from more test fixtures
* Update more tests
* Pmtiles tests pass now too
* Remove unnecessary sort (and make indent)
* Update changelog
* The allow-existing test for pmtiles needs -o, not -e
* Declare --allow-existing to be unsupported for pmtiles.
It was always a bad idea even for mbtiles.
Co-authored-by: Brandon Liu <bdon@bdon.org>
* Progress toward making a tileset metadata structure
* Write metadata from structure to mbtiles
* Write dirtiles metadata.json from metadata structure
* Update changelog
* Working on eliminating preflighting
* Adjust for the map/images schema change
* Avoid generating duplicate tiles with the detail reduction strategy
* Do error checking if tiles in a directory can't be written
* Update changelog and version
* Revert unintentional code reordering
* Neglected to add the exit on error here
* Handle points too when dropping or coalescing the "smallest" features.
* Add statistics of tile size reduction strategies to tileset metadata
* Update changelog and version
* Update documentation
Danila Poyarkov