2.9 KiB
Flatmap Basemap Profile
This basemap profile is based on OpenMapTiles v3.12.2. See README.md in the parent directory for instructions on how to run.
Differences from OpenMapTiles
transportation_name
layer does not abbreviate road names yetpoi
layer missing theagg_stop
tag- Paths are visible at z13 in
transportation
andtransportation_name
layers instead of z14 in OpenMapTiles, to revert this behavior set--transportation-z13-paths=false
brunnel
tag is excluded fromtransportation_name
layer to avoid breaking apart longtransportation_name
lines, to revert this behavior set--transportation-name-brunnel=true
Code Layout
Generate.java generates code in the generated package from an OpenMapTiles tag in GitHub:
- OpenMapTilesSchema contains an interface for each layer with constants for the name, attributes, and their allowed values
- Tables contains a record for each table that OpenMapTiles imposm3 configuration generates (along with the tag-filtering expression) so layers can listen on instances of those records instead of doing the tag filtering and parsing themselves
The layers package contains a port of the SQL logic to generate each layer from OpenMapTiles. Layers define how source features (or parsed imposm3 table rows) map to vector tile features, and logic for post-processing tile geometries.
BasemapProfile dispatches source features to layers and merges the results.
BasemapMain is the main driver that registers source data and output location.
Regenerating Code
To run Generate.java
, use scripts/regenerate-openmaptiles.sh script with the
OpenMapTiles release tag:
./scripts/regenerate-openmaptiles.sh v3.12.2
Then follow the instructions it prints for reformatting generated code.
License and Attribution
OpenMapTiles code is licensed under the BSD 3-Clause License, which appears at the top of any file ported from OpenMapTiles.
The OpenMapTiles schema (or "look and feel") is licensed under CC-BY 4.0, so any map derived from that schema must visibly credit OpenMapTiles . It also uses OpenStreetMap data so you must visibly credit OpenStreetMap contributors.