Hi, Reading the docs, the Curve.Offstet method should return an Array with more than one curve when the curve offset results in self intersections: " If the original curve had kinks or the offset curve had self intersections, you will get multiple segments in the output array.", but this is not hap…

Hi, This is a known limitation of the offset Curve command. [image] Why does Offset generate only one curve? Grasshopper Why isn’t the native Offset component creating 2 curves in this situation like the Clipper plug-in offset is doing? I have checked the API and indeed…

I made a (very messy) workaround code in python that works in R7, if anyone interested I can clean the code and pass it to a C# component. It works with nurbs but needs aditional code for almost-intersecting curves. The steps: Detect if the curve self intersects, and then trim it Find if the resu…

This is a good first cut! I’m running into the same issue, but need it to work with polycurves as well. I was hoping to get to steal your workaround while we wait for Rhino 8, but it looks like I’ll have to do some additional work: [OffsetInward] There would be an easier work around if we could ha…

Hey Cullen! I made a new version of this workaround that is compatible with polycurves too, but I need to decouple from a much larger script (it gets the distance from user strings, and offset both sides right now). [image] I’ll find some time on the weekend and post it here.

@doo.cabral Can you share your script here? Maybe i can develop it in C#

[image] R-d: Maybe Get the gist of the approach (shown inwards but the same goes for the other way) and try to do it using Polylines (the easy part). For PolyCrvs it’s a bit different mind. That said that’s not the easiest of things (but hope dies last).

Geometry.Curve.Offset returning only one curve when self-intersecting

Grasshopper Developer

magicteddy August 11, 2023, 1:12pm 2

Hi,

This is a known limitation of the offset Curve command.

It should be solved in Rhino WIP.

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Why does Offset generate only one curve? Rhino windows	2	560	September 16, 2021
Why does Offset generate only one curve? Grasshopper windows	3	968	November 30, 2022
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RhinoCommon Curve.Offset() with multiple results (limitation) Scripting	3	1436	August 15, 2023
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Geometry.Curve.Offset returning only one curve when self-intersecting

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