alaCarte is a tile renderer for OpenStreetMap data written in C++11, using Cairo for rendering and Boost-Spirit for MapCSS parsing.

The rendered tiles are served over HTTP using the Slippy map tilename convention.

To compute which data is needed for rendering a tile, alaCarte uses a variant of a kd-Tree.

alaCarte was designed with medium dataset size in mind. On a typical machine with at leat 8GB RAM, alaCarte can handle a unfiltered export from the federal state of Baden-Wuerttemberg (Germany).

alaCarte was developed as part of a lab course student software project at KIT. For the old project files (mostly in German) see the old project repository.

• easy to use
• most MapCSS attributes are implemented
• no need to filter OSM exports, you have full access to all attributes at runtime
• stylesheets are updated at runtime (changes are detected automatically)
• tiles can be rendered in groups ("meta tile") to speed up rendering (not in 0.2)

mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make

• Cairo (>=1.12.0), Cairomm
• Boost (Spriti)
• SigC++
• libpng

(from build directory)

./alacarte-importer osm_export.osm data.carte
./alacarte-server -g data.carte -s ../data/mapcss

You can use the test Leaftlet-Page located in tests/html/Leaflet/index.html to view the rendered tiles.

You can download fresh OSM exports from Geofabrik.

(as root)

make install

The config-file is located in /etc/alacarte.conf. You should make sure the user running alacarte has permissions to write to the specified directories for caching and logging.

• Real database backend
• Better font rendering (Pango?)
• Unicode support
• Bette label placement (e.g. above icons)
• Implement MapCSS-include
• Better caching of fonts and icons
• Option to "tune" imported data for specific stylesheets
• Speed up tree generation