This selects which waveform is used to create scallops. The default is a sine wave.
Note that the Ramp Up, Ramp Down, and Square waveforms may cause excessively thin radial walls. The same warning applies to pulse waveforms that lack sufficient slew.
To create pinwheel shapes, use a Triangular Pulse with a Pulse Width of one, and skew the triangle via Slew.