PTC has improved how Style deals with closed curves. Users can now create closed curves as periodic or nonperiodic curves. A new option is available to toggle between the different states of the closed curve, however, all newly created closed curves are defined as periodic by default. Periodic curves have no tangency control on endpoints, enabling start and end point continuity. This will result in creating better quality surfaces. Nonperiodic curves are split in two halves during regeneration to support downstream creation of sketch-based features. Periodic curves will now be supported as b-splines inside Sketcher
