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RuudB

Offset 3d nurbs curve

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Hello all,

I want to offset a nurbs curve, but with the "Offset Nurbs" I'm not getting result. Probably because the nurbs curve is 3d, so the tool needs input for an offset direction. Does anybody know how to set the offset direction, so I'm getting result?

I know I can make an offset surface with "Path Extrude", but than I have no idea how to extract an specific outer curve from it.

Ruud

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Hello RuudB,

when I use a 3d Point as offsetvalue im getting a error message.

It runs correctly when a integer value is used a offset input.

regards

edit:

The Nurbs used for my test was only 2d.

With a 3d Nurbs Im also getting no result.

Edited by Patrick Winkler

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He Patrick,

Thanks a lot for thinking with me! But moving the object, won't make it an offset. When having a curve, the inner offset is a smaller curve, not a copy. I also still trying to find a solution, it should be possible!

Ruud

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Hi,

I Don't believe that this node "Offset Nurbs" works, hopefully will get clarification on it soon.

This network offsets a circle.

HTH

Edited by Alan Woodwell

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Hi,

Copy Offset and Scale.

Finally got this to work after studying Luis M Ruiz Example WT-31-How_to_sequence_volumes.

But can’t get rid of the first line but that's for another day.

Sorted it by changing the start scale to 1. I had 0.

I used the get symbol node because it has a 2D origin input where a simple polygon was harder to provide an origin to move by.

HTH

Edited by Alan Woodwell

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He Alan,

Thanks a lot for making this model! Scaling a curve will bring it close to an offset. But unfortunately it isn't a real offset. Still it is interesting! I will try to do something with manipulating all the points on the 3d curve. I guess this should be the start for a real offset.

Ruud

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Hi,

So what you are after is take a polyline and bisect each angle between each connecting segment and move each node the same distance along the bisect line all to the same side.

There's something to sleep on.

LOL

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