The flipping problem is due to a property of curves. A parametric curve's normal always points in the direction of concavity at a given location. The normal will flip where the curve transitions from concave to convex (and vice versa), such as at the mid-section of an "S" curve. Tools will often apply a "Frenet" frame which is an added layer of math that walks along the curve and unifies the normal direction by applying local rotations to buffer the flipping, but Maya doesn't appear to be using one.
Specifying a linear quantity such as an up vector will not resolve the issue as you need a correction along the flow of the curve, not a fixed point or direction in a linear coordinate space. Matt Date: Tue, 22 Aug 2017 17:25:02 +0200 (CEST) From: Morten Bartholdy <x...@colorshopvfx.dk> Subject: Re: Otish - is there a Maya equivalent of XSI's Deform by Curve? To: "Official Softimage Users Mailing List. I have just tried all the options for World Up Type - they just produce different types of flipping. I will try lattice on curve and see how it goes. MB ------ Softimage Mailing List. To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with "unsubscribe" in the subject, and reply to confirm.
