This was only a temporary workaround for problems that no longer exist.

The previous solution assumed that some sections consisted of a single
face on the coarse grid

This allows us to return a GlobalFriction and thus hide some information

Also changes the [Output]

Solve until the binary comparison terminates
Re-enable fastQuadratic

The original coordinates are used and then rotated

This also reveals that the left angle is closer to 15.1 degrees than to
15; new calculations thus yield slightly different results

Note: the angle is not 15 but rather 15.1 degrees!