Why do the attached Flow curves twist so much?

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)

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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…



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

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

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