Create a curve between two curves

[bigjimslade]

I have two coplanar curves (Red and Purple). Is there a simple way to create a curve halfway between the two curves (as iI have sketched roughly in black)? I’ve tried TweenCurves but that creates bizarreness here,

Problem Bisect.3dm (3.0 MB)

[jeff_hammond]

tweenCurves works.
you just have to make the two corresponding end points match up. (this step is a little bit confusing to see during the command since the two curves are touching.

after you select the two curves, put the cursor on the intersection of red&purple then click.

then complete the command.

[clement]

@bigjimslade,

when _TweenCurves fails you might try making a _Loft surface between the two curves using refit value of eg. 0.00001 feet. Then extract an isocurve using _ExtractIsocurve in the V-Direction and click on your point. The extracted isocurve can be improved by using _FitCrv, eg. with a value of 0.01.

Problem Bisect.3dm (36.7 KB)

c.

[MarcusStrube]

You can also do this: Problem Bisect_re.3dm (37.1 KB)

[Zsimon]

Hi Marcus
If I try to open your file with the latest WIP Rhino, I get the following error message

The file was created with a newer version of Rhinoceros.
This file can not be read by Rhino 5.0
@dan @pascal EDIT: Solved … was a Wip file RH6

[wim (Wim Dekeyser)]

That’s a RH6 WIP file.
Here it is as a RH5 format…
Problem Bisect_re-RH5.3dm (41.0 KB)

[Zsimon]

Thank you Wim

[bigjimslade]

Thanks. That worked.