Reproject keeps straight lines straight regardless of destination CRS

[astrojuanlu]

Reprojecting a straight line (or a rectangle) to a different projection will almost always bend the line into a curve. However, GeoVector.reproject does not have this notion:

In [3]: ANTIMERIDIAN = tl.GeoVector.line(((180, -89.999), (180, 89.999)), WGS84_CRS)

In [4]: new_crs = CRS({'units': 'm', 'proj': 'aeqd', 'ellps': 'WGS84', 'datum': 'WGS84', 'lat_0': 70.0, 'lon_0': 25.0})

In [5]: print(ANTIMERIDIAN.reproject(azeq_p0)._shape)
LINESTRING (383.4218956436899 -17771047.68159337, 48.17610439830184 2233086.230624789)

In this particular case, it's only reprojecting the two end points, therefore producing the wrong result when plotting. On the contrary, Cartopy knows how to do it properly:

https://gist.github.com/Juanlu001/a01e396e2364274a4a50af61eb15f6ce

I think we would need some "resolution" parameter (like Shapely buffer) that inserts intermediate points in straight lines and reprojects each of those to produce a proper curve.