Apparently NURBS Python converts NURBS geometry to triangle meshes on export to OBJ.
This implicit conversion is nowhere mentioned in the documentation. There should be a big warning box added.

Wavefront OBJ supports (trimmed) NURBS geometry. See e.g. a copy of the format description at Paul Bourke's website.

Software that can read (and write) such

The Point#d, Vector#d and Direction#d modules were recently optimized in the coordinate-systems branch to avoid unnecessary object allocations and function calls, but this also meant most functions got more verbose and therefore more prone to typos. It would be very useful to add some more fuzz and/or hardcoded tests for the various functions in these modules, following the patterns in the

The test suite contains a set of points to fit without indicating where those numbers came from. Plotting them in Excel suggests that the 3rd value (y = 21.119) may be a typo (instead of y = 2.119).

The value added by a test suite is only as good as the tests are meaningful. Does anyone know where these data came from? Were they measured from some physical process? Were they generated by a