Issue with tween between two curves along guide curves

Grasshopper
,
1

I´m a beginner and just started out learning grasshopper. Currently I am trying to rebuild geometry that I built with classic Rhino operations previously -

I am stuck at a in my eyes rather simple task - I´ve searched through forums, youtube tutorials and all sorts without luck, so I thought I post my issue here.

I want to tween two curves along guide curves, one straight, one curved. The tween results in tilted curves instead of being parallel to my z axis.
I found a way to divide the curved guide curve, but somehow can´t fix my tween.
Did that happen to someone else before and is there a solution to this?

thanks so much in advance,
Kim

2

Post your code. Check your curve directions - might need to flip them. But post your code.

3

Ahh, of course! Here are the rhino and gh files, also showing the geometry that I am after!

tween issue_GH file.gh (10.6 KB)
tween issue_posted on forum.3dm (8.6 MB)

4

Opened your file, R8:

image
image753×620 49.1 KB

This looks wrong?

5

Hi René,
Correct - that’s wrong :smiley:
I would like my tween to move in between the constraint curves in the model, but somehow can’t manage.

Maybe tween isn’t the right command for this - and very possible there’s a better way to achieve this?

1 Like
6

Got it.
Maybe this is a temporary workaround:
tween issue_GH file.gh (16.0 KB)

image
image

Or these:
tween issue_GH fileb.gh (15.6 KB)

tween issue_GH filec.gh (16.6 KB)

image
image778×382 34.4 KB

image
image825×522 42.2 KB

7

Hi René,
amazing, thank you!! Great to see that different paths lead to the result - thanks for your time and input! in my brain file c makes most sense :sweat_smile: