Dan Albert f659dc1f76 Reference point rework.
* Introduce a real type.
* Rewrite _transform_point to make use of Point.
* Add shift modifier for large (10 pixel) adjustements to reference
  points. Unmodified behavior is now single pixel.
* Use WASD for moving the second point (shift modified numpad keys don't
  seem to work).
* Add a debug option to draw transformed reference points to check for
  errors. If they don't overlap, something is wrong.
* Cleaned up all the existing reference points. Caucasus in particular
  is now *much* better.

As an added bonus, the cleanup for carrier movement projection now also
shows an invalid destination when the destination is on land.
2020-12-10 21:08:38 -08:00
..
2020-12-10 21:08:38 -08:00
2020-11-20 02:19:03 -08:00