Hi all, openstreetmap-carto is a project to re-implement the standard OpenStreetMap mapnik style, in CartoCSS[1]. At the OpenStreetMap Hack Weekend in London last Sunday I released v1.0 of project, and went to the pub before telling anyone!
Version 1.0 is the complete re-implementation of the entire style in CartoCSS, including all the features of the original layer. It is pretty much pixel-for-pixel identical to the original style, with only a couple of noticeable differences around vertical text spacing and stacking of overlapping landcover polygons. I've spent a long time comparing the output with that of the current mapnik stylesheets and tracking down mistakes in the conversion, which you can see in the run-up to the release. There might be some more mistakes that are found later, in which case I'll release more versions in the v1.x series. It's been a huge amount of effort, but it's entirely worth it to see it all working in TileMill! Playing around with the style is now much easier, and much more fun. As per the roadmap, the next stage is to simplify the stylesheets to make them "easier to wrangle". I've already started this, with converting a couple of key colours into variables (so now you can change the colour of all the water features with a one-liner) and refactoring the style rules to make compilation times much faster (and the output XML around 23% of the size of v1.0). So today marks the release of v2.0, the first release of the refactoring work. I intend to continue work on the refactoring, and I've started make notes (in the form of github issues) to give you an idea of what the upcoming work is likely to involve. I want to be cautious about making the stylesheet "too clever", so if you've got an ideas for major refactoring, lets discuss them! If you have any questions, or if you have any successes or problems trying to use the stylesheets, let me know! Cheers, Andy [1] https://github.com/gravitystorm/openstreetmap-carto _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
