A slippy map addon.
A major rework and update to https://github.com/RandomEtc/modestmaps-of.
Inspired by http://unfoldingmaps.org/.
TODO:
- Add additional tile providers.
- Refactor map into map and map controller.
- Combine Coordinate / Location Classes w/ Point2D.
- Use ofVec2d rather than Point2d.
- Break into header + implementation files.