Splining curves

Splining smoothes curves to give tangency continuity on selected points. Tangent continuity is a smooth change in tangent direction as you move across the curve. The positions of the selected points are changed during this operation.

To spline a curve:

1. Select a curve.

   

2. Select the points on the curve to be splined (smoothed) :

   

   At least two points must be selected on the curve. On open curves, the start or end points must not be selected.

3. Click Manage tab > Modify panel > Spline to display the Spline Curve dialog:

   

   Tip: If you have not selected points, or the current selection of curve points is not correct, you can select different curve points while the dialog is raised.
4. Use the options on the dialog to spline the points on the curve:
   • Spline along both directions — Select this option to apply the spline in both directions around the selected points.
   • Position new points near to original location — Select this option to position the points near their original locations on the splined curve:

   

   Otherwise, they are evenly distributed along the splined curve:

   

5. If you are not sure how to position the points, click the Preview button to see what the curve will look like.
6. Click OK to apply the spline and close the dialog.