Menu : CURVE

Command: Direction:Revolve

Shortcut : None

This command sets the start point of a closed curve or curve set to a new location. The start points can be displayed with the command CurveÞDirection:Show. For each curve, point and click with the left mouse button to indicate the location of the new start point. The control points of the curve determine the possible start points. The new start point will be located as near as possible to the point indicated with the mouse.

This is particularly important with section curves, as to avoid twists when building surfaces, the start points need to be aligned. To align the start points select the cross section curve-set and issue the command. Depending on the geometry of the sections, it may not be possible to align the start points exactly. Since the actual position of the start-point of closed cross-sections is rarely important (it is the alignment that is important), you may try repeating this command and choosing a different location for the start point.