# Offset 3d nurbs curve

## Recommended Posts

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

##### Link to post

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

##### Link to post

Here is an alternative way.

You can create a offset nurbs with the Move-node

Edited by Patrick Winkler

##### Link to post

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

##### Link to post

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

##### Link to post

Also look into this post.

You can manipulate the points on the 3d Nurb.

Go down to the network have a look.

See Attached for location of changing vertex.

HTH

Edited by Alan Woodwell

##### Link to post

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

##### Link to post

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

##### Link to post

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

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

Only 75 emoji are allowed.

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×

7150 Riverwood Drive, Columbia, Maryland 21046, USA   |   Contact Us:   410-290-5114

© 2018 Vectorworks, Inc. All Rights Reserved. Vectorworks, Inc. is part of the Nemetschek Group.

×

• KBASE
• #### MARIONETTE

×
• Create New...