@spiceErrorCheck<EOL>def pl2nvp(plane):
assert (isinstance(plane, stypes.Plane))<EOL>normal = stypes.emptyDoubleVector(<NUM_LIT:3>)<EOL>point = stypes.emptyDoubleVector(<NUM_LIT:3>)<EOL>libspice.pl2nvp_c(ctypes.byref(plane), normal, point)<EOL>return stypes.cVectorToPython(normal), stypes.cVectorToPython(point)<EOL>
Return a unit normal vector and point that define a specified plane.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/pl2nvp_c.html


:param plane: A SPICE plane.
:type plane: supporttypes.Plane
:return: A unit normal vector and point that define plane.
:rtype: tuple