* 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
* Speed up mvt_value comparison
* Converting repetitive ifs to cases
* More conversions from ifs to cases
* Optimize the always-true filter case
* Don't convert types of attributes without accumulators
* Unordered map seems to be faster than map
* Add missing header
* Fix some warnings
* Fix the warnings better
* Avoid an int->string->int conversion
* Lazily initialize layer key and values maps when actually needed
* More switches from maps to unordered_maps
* Sure, I'll take the microoptimization
* More emplacement
* Save some copies
* Emplaces and moves
* Lazy linear scan of attributes instead of building a map
* Extra printfs, missing header
* Avoid clipping if the input and output tiles are the same
* But do clip if the tile extent is being reduced
* Make sure I'm not constructing std::strings here at runtime
* More worrying about runtime string construction
* A couple more std::moves
* Const references!
* More const references
* Another std::move
* Make the string_value of mvt_value std::optional
* Reserve storage when decoding
* Provision for different mvt_values to share a string pool
* Use the string pool when decoding
* Avoid another string construction
* Try limiting the depth of the search for duplicate attributes
* Revert "Try limiting the depth of the search for duplicate attributes"
This reverts commit 9ec94a15ff.
* Update changelog
* Fix typo noticed during code review
* Starting to factor out attribute accumulation into its own file
* Continuing to factor out attribute accumulation
* Reduce duplicate code
* Plumbing the accumulate-attribute option around
* Call the attribute accumulator
* Test that accumulation works
* Add missing #includes
* Don't sort within individual multiplier clusters
Doing so throws off the spatial distribution of the low zooms
* Docs and changelog
* Add comments
Erica Fischer