Hi OSM-dev readers, I would like to introduce my Go bindings package for Mapnik.
The source code as well as some demo code is available at http://github.com/fawick/go-mapnik under a BSD-style license. So far, the functionality of the package is a small subset of Mapniks features, as it uses the mapnik C API (http://github.com/springmeyer/mapnik-c-api) and not the C++ API directly. This may change, however, as I need to explore different ways to interface C++ and Go directly without using C code and Cgo. Nevertheless, the bindings come with - a fully working Go port of OSM's own generate_tiles.py - an efficient TileServer for generating and HTTP-serving tiles based on one or more different mapnik stylesheets, - a MBTiles-1.2-compatible Sqlite DB that is currently used by the TileServer for caching the generated tiles (multiple layers can be cached, too). Especially the TileServer is pretty handy, as it allows you to easily add a on-demand tile layer to your openlayers/leafletjs application. I am using the package under Windows and Linux, but it should work just fine on MacOS as well. However, on Windows, I restricted myself to the 32-bit builds (Go windows/386), as I simply used the Windows 32 bit SDK from the Mapnik webpage http://mapnik.org/download/. The package uses an intermediate C DLL on Windows to allow linking MinGW compiled code against thre MSVC-based Mapnik SDK. I have Currently I have no plans to add more of the Mapnik API to the package, as that would require adding those API calls to the mapnik-c-api first, and the current feature set is sufficient for my present-day applications. However I plan to maintain the bindings packages and to recreated any new contributions to the Mapnik C API for go-mapnik package. Of course I am happy to receive pull requests in case you want make any contributions to the package bindings directly. Fabian _______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
