Why do the attached Flow curves twist so much?

Rhino Rhino for Windows
1

In the attached, try Flow from the red line to any of the purple curves… They all twist terribly… Why? Any way to remedy that?

Thanks, --Mitch

FlowTwist.3dm (680.1 KB)

1 Like
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Hi Mitch - this happens when the twist is vertical to the world - I’m not sure how to describe it other than that - If you RemapCPlane all the purple guys to Front, so they are all sideways, it all works better. I’ll add this example to the heap…

thanks for sending it…

http://mcneel.myjetbrains.com/youtrack/issue/RH-32184

-Pascal

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Ouch… OK, now I vaguely remember seeing this in the past… Not a great thing if one currently needs to make vertical columns…

Thanks, --Mitch

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It’s not a bug, it’s a feature! Think of all the twisty things you could create, it’s so fun! :joy:

muchwow.jpg831×531 283 KB

But really, this has anything to do with curve “torsion”?
I would like to know more about it, and how to control it…