Addons for loading openstreetmaps

Hey!

I’m assisting in the development of an installation, where the base is a kind of interactive map. We want to render a map based on data from openstreetmaps (or something similar) and then visualize some kind of GeoJson on top of this.

I’ve tried ofxMaps and ofxGeoJson, but with mixed luck. Ideally an OFX version of this http://bl.ocks.org/ninjaPixel/7f244063ca7171fc9a67 would form a good base for the project.

How would you go about this or do you have any suggestions for repositories to look at?

Best regards,
Frederik