(continued...)Constructing arbitrary sweep surfacesGeomFill algorithms considered in the previous posts internally use Approx_SweepFunction subclasses that define particular techniques to calculate cross-sections.You can create your own subclass to model a particular sweep surface. Approx_SweepFunction has a few pure virtual methods which your subclass must redefine. For instance, in ACIS-SAT import for CAD Exchanger I use it to generate variable-radius surfaces. In ACIS, such surfaces...
