Tiling Module

The Earth module contains

1. The LatLong class. Specifies a point in terms of latitude and longitude.
2. Classes for collections, lines and polygons specified in LatLongs.
3. Transformation of these classes into their equivalents in 3D distance space, 2D distance space and 2D scalar geometric spaces.
4. Some basic terrain polygons for the Earth, intended as a development aid rather for polished professional looking applications.