Edit Fit Point Spline tangency Weights and Angles Precisely

[u7120482]

I’m working on a sketch at the moment where I’ve joined two parallel lines with a spline using the “Blend Curves” tool. However, I want to reduce the tangency weight at each end while keeping both weights equal still, so I have that same symmetry still but have a shallower curve.

As far as I can find, the only way to edit the spline curvature is with the handles, but that lacks the precision I’m looking for. Is there a more precise tool? Or am I stuck having to eyeball it?

If there’s a workaround for this specific use case I’m open to that too, but this is not the first time I’ve run into this problem so a general solution would be appreciated.

Can’t attach screenshots right now but I will when I get home.

[Drewpan · Accepted solution]

Hi,

The only way to edit the spline is with the handles. BUT - those handles can be dimensioned and constrained like

any other line. You can set a length dimension on them, you can set a horizontal or vertical constraint on them, and

you can set up an angle dimension between the handles and another line.

I haven't tried it but since you can do all that other stuff, I can't see any reason you couldn't use the Equals

dimension on them either and refer to the other handle's dimension.

Cheers

Andrew

[TrippyLighting · Accepted solution]

What exactly are you referring to with "precision"?

Dimension one of the handles and then apply an equal constraint between the two handles.

[u7120482]

I did not know you could put constraints on handles. I have now learnt something. Thank you!