Polygon stores v2 #191
Description
The new polygon stores format will solve these problems:
- Less file sizes, for lite dataset expect 4~5MB without using any other compress method(polygon, zip, gzip, etc)
- Keep original geometry relationships between polygons, which means it will solve Fix polygon simplify #183 issue
- Improve performance, because of using simplified polygons, some areas are not covered by polygons, thus some coords shifting are required to look up nearby points, as a result query speed reduce a lot
Changes to tzf-repos:
- The new format will only change how data saved in disk. In-memory lookup will not geometry.
- I hope no breaking changes to current tzf repos(tzf/tzf-rs/tzfpy/tzf-swift/tzf-wasm). If breaking changes are necessary, all repos will bump to v2.x.y to indicate breaking changes. Potential breaking changes:
- Current data format will not be published after new version is completely ready
- To handle new data format, finder’s
New{XXX}method need some breaking changes.