- coordinateSystem, cylindricalCS, sphericalCS:
get copy with name constructor
- cylindricalCS, sphericalCS:
can switch off default degrees
- dropped cartesianCS class (already covered by coordinateSystem) and just
always use coordinateSystem directly.
The dictionary runtime selection still accepts type "cartesian" as an alias,
to provide the least surprises.
- dropped runtime selection based on origin/axis/direction (not used), but
left runtime selection based on origin/coordinateRotation as still being
potentially useful.
