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Twisting Splines
#6
Hello,

     Once again thanks for the fast response.

     Ok, spline CPs not being able to rotate beyond 180 degrees accounts for part of what I was encountering. I have imported the scene you posted and have set the swirl type to Anchor Group Abs to assure a constant rotation rate. From your (very helpful) explanation, it certainly does look like Swirl combined with Anchors will do exactly what I need and I appreciate your assistance with this.

     I am out of time today and will look at the tutorial you suggested tomorrow along with trying this out in my project. Now I have a path forward and I will get back to you with the results. Smile


-thanks







(05-10-2024, 01:36 PM)_Aka_ Wrote: Hi,

Rotating a Control Point to induce a spline twist works only up to 180°. Anything beyond needs the Swirl feature.

Every CP in the spline is part of an Orientation Anchor Group. A group is limited by two Orientation Anchors. By default, a spline has only one group, and the anchors are the first and last CPs.
To visually distinguish Orientation Anchors, make sure to set the right visualization settings, and look for the anchor icons


Swirl settings are available only to orientation anchors. When you set a swirl, you can choose to apply it to a segment, or to a whole group.
To set a CP as an Orientation Anchor, tick the Orientation Anchor setting in its inspector.

I attached a scene that does what I understood you need. The second cube is place just at the end of the swirling group. Since it has a spline controller, its orientation is defined by the splines'. In other words: Swirl -> change spline orientation -> change cube orientation.

To learn more about spline orientation, here is a link to this tutorial. It is old now, so the settings shown in the video have a bit changed since, but you can get the global idea I believe:
https://www.youtube.com/watch?v=hHLdW_FRtfw

Please let me know if this helped or not.
Have a nice day.
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Messages In This Thread
Twisting Splines - by ZiggZagg - 05-09-2024, 06:26 AM
RE: Twisting Splines - by _Aka_ - 05-09-2024, 03:22 PM
RE: Twisting Splines - by ZiggZagg - 05-10-2024, 04:56 AM
RE: Twisting Splines - by _Aka_ - 05-10-2024, 01:36 PM
RE: Twisting Splines - by ZiggZagg - 05-11-2024, 05:53 AM
RE: Twisting Splines - by _Aka_ - 05-10-2024, 01:37 PM
RE: Twisting Splines - by _Aka_ - 05-14-2024, 04:48 PM

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