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Chapter 8. Creating Polylines and Splines > Controlling Splines with SPLINEDIT

Controlling Splines with SPLINEDIT

The SPLINEDIT command enables you to edit a spline’s control points and, if present, fit-data points. When you draw a spline, you pick fit-data points, which AutoCAD uses to calculate the location of the spline’s control points. You can add additional control or fit-data points or move existing ones. You can change the weight or influence of control points, as well as the tolerance of the spline. You also can close or open a spline and adjust the tangent information of the start and endpoints.

Control points usually are not located on the spline curve (except at the start and endpoints), but they control the shape of the spline. AutoCAD uses the fit-data points to calculate the position of the control points. After AutoCAD determines the control points, it no longer needs the fit-data points. If you remove the fit-data from a spline, however, you cannot use any of the fit-data editing options of the SPLINEDIT command to further edit the shape of the spline.


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