Hello everyone, I’m facing a challenge and would appreciate any guidance. I created a polyline from a set of coordinates representing an alignment. I would prefer not to convert the polyline into a Civil 3D alignment because the resulting stationing may not correspond exactly with the original pol…

You could get the PolyCurve of the Polyline in Dynamo and find the CoordinateSystems along this Curve. Then add a Y vector (or X, one of both is perpendicular to that point) and a distance, and you have your offset point. Negative distances are left sided. The Civil Nodes package has nodes to creat…

are you able to share the nodes connection kindly, will really appreciate, im struggling on how to make the nodes connection and how to see the LHS and RHS offsets coordinates forming, Thanks

Hola amigos buenas! amigo @oliverkisera you need the package Arkance Systems to get the node Polyline2D.Vertices, like this you will be able to check if you have same amount of vertices in the original polyline and the offset one!! [Vertices of offset curve 2] [Vertices of offset curve]

Please try the below, I’m not sure if this is quite what you’re after but hoping it would at least give you an idea of how the nodes would be assembled for something like this. [offset points]

[offsets] In theory it should be this, but unfortunately the sub-curve direction bug is still not fixed in Civil 3D. So when the curve is counter-clockwise, the segment is mirrored in the Z-direction and you get the locations on the wrong side: [image] If the offset is always the same on both s…

[image] Anton_Huizinga: So when the curve is counter-clockwise, the segment is mirrored in the Z-direction and you get the locations on the wrong side Try Curve.HorizontalFrameAtParameter instead - not sure if that addresses the issue or not though. It should maintain the XY plane perpendicul…

Hello, thanks for this, Ive tried with a polyline though my polyline has vertices but its not of circular nature, the aligment itself from the coordinates is supposed to be 4988m, but if i use this method, I get coordinates at 10m intervals but its giving me the end station as 6710, meaning more tha…

Ive used the Curve.HorizontalFrameAtParameter, what should i feed on the paramter input

Your Dynamo curve, the the list of parameters for your spacing. Assuming it is a uniform curve, the later would be easiest to build as a range in design script - something like (0..crv.Length..spacing)/crv.Length;. In this case (and usually with uniform curves) you can think of parameter as a perce…

Hola de nuevo!! Amigo @oliverkisera don’t get confuse, the parameter extendCircular in the node Polycurve.OffsetMany is not only for polylines or polycurves of circular nature, the node will create an offset of the polycurve, it will evaluates the properties of the curve and give you the best aproa…

LHS/RHS offset coordinates from polyline

Civil 3D

ISECnico May 20, 2026, 4:48am 14

@oliverkisera , I think you are confusing this thread with your other thread.

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LHS/RHS offset coordinates from polyline

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