Spline Approximated Spline ApproximatedThe Spline Approximated function creates a spline curve using the snap points of wireframe entities as the control points for the spline. The spline curve passes through the control points similar to the Interpolated spline, but as an approximation with a more symmetrical result for closed curves.
Spline Approximated can also be used to create a Spline from Curves.
Spline Approximated supports the use of the snap increment when selecting the spline control points. The snap increment allows you to get precise results when using mouse selection and helps to reduce data entry modifications.
To learn more, view Snap Increment.
To open Spline Approximated, do one of the following:
In the Splines menu, click Approximated.
On the CAD toolbar,
click the down arrow and click the icon.
Right-click anywhere in the graphics area, point to CAD, Splines, and click Approximated.
The parameters display in the 
Data Entry tab
of the Data-CAM Tree Manager.
The spline is created using only mouse selection.
1 Open the function and click to select a snap point (or anywhere in the graphics area) to select the first spline control point.
You can modify the snap increment value or turn it off while selecting control points.
2 Click to select each control point in the desired order and direction to create the spline.
3 To finish the current spline entity, press Spacebar.
4 Repeat this process to create more spline entities.
5 To close the Data Entry Manager, click Cancel.