Basic questions on control point splines

[numan85]

I had some basic questions while working with control point splines:

1) Continuing a spline: Is there a way to continue drawing an existing spline without creating a new spline? So if I exit a spline drawing mode and want to go back to drawing the same spline later on. Right now when I create a new spline it doesn't maintain continuity with the previous spline and fusion essentially treats them as two splines which results in two faces if I extrude these splines.

2) Closing a spline: Is there a way to close the cv spline so that it doesn't end in a kink when closing the curve ? Currently I have to manually add parallel constraints on the control frames to get smooth end.

If anyone is familiar with Rhino, you will know that continuecurve is the command that solves the first problem. And sharp/close option in the curve command addresses the second problem. Wondering how to address this with fusion with a little less pain.

Thanks!

Numan

[jeff_strater · Accepted solution]

You cannot "continue" a CV spline, once it has been created.  You can, however, add more internal control points after it has been created, then drag the existing control points around to give the same effect.  You can also create a new curve, and make it tangent to the old one.  As for making a closed CV spline, the easiest way to do that is with a colinear constraint on the two control edges at the start and end of the curve:

[numan85]

Thank you Jeff. It would be great if there was a faster way to auto generate this colinear constraint to get smooth ends. For instance Alt + Left click on the end point.