2011

When a spline-fit curve is fit to a polyline, the spline-fit curve's frame is stored
so that it can be recalled by a subsequent decurving. You can turn a spline-fit
curve back into its frame polyline by using the PEDIT Decurve option. This
option works on fit curves in the same manner as it does on splines.
Most editing commands act the same when applied to spline-fit polylines or
fit curves.
■ MOVE, ERASE, COPY, MIRROR, ROTATE, and SCALE operate on both the
spline curve and its frame, whether the frame is visible or not.
■ EXTEND changes the frame by adding a new vertex where the initial or
final line of the frame intersects the boundary geometry.
■ BREAK and TRIM generate a polyline with only the fit spline, which is
consistent with fit curves, where the curve fitting is permanent.
■ EXPLODE deletes the frame and generates lines and arcs to approximate
the spline-fit polyline.
■ OFFSET generates a polyline with only the fit spline, which is consistent
with its behavior with fit curves.
■ DIVIDE, MEASURE, and the Object option of AREA and HATCH see only
the fit spline, not the frame.
■ STRETCH refits the spline to the stretched frame after a spline is stretched.
The Join option of PEDIT decurves the spline and discards the spline
information of the original and any added polylines. Once the Join operation
is complete, you can fit a new spline to the resulting polyline.
The Edit Vertex options of PEDIT have the following effect:
■ The Next and Previous options move the X marker only to points on the
frame of the spline, whether visible or not.
■ The Break option discards the spline.
■ The Insert, Move, Straighten, and Width options automatically refit the
spline.
■ The Tangent option has no effect on splines.
Object snap uses only the spline-fit curve itself, not the frame. If you want to
snap to the frame control points, use PEDIT to recall the polyline frame first.
2D Polyline Selection (PEDIT) | 775