OffesetOnSrf fails in Rhino8

Grasshopper
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1

Hello,
I’m trying to use OffsetOnSrf component in GH, I’m seeing different results between Rhino7 and Rhino8. In Rhino8 the component fails to generate a valid offsetted curve, from only some sections of the original input, while in Rhino 7 the result is valid.
I tried with different offset values, please check the .gh file attached.

OffsetOnSrfBug.gh (2.3 MB)

Edit: I also tried using the RhinoCommon API in a C# plugin, the result is the same

Any suggestion?

3 Likes
2

Yes, also happens to me in Rhino 8SR9.

Rhino 7

image
image1204×666 41.7 KB

Rhino 8

image
image1519×943 134 KB

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Anyone else having this problem? Anyone found a solution?

4

Hi, thanks for reporting this. I updated the trimming algorithm in OffsetCrvOnSrf for this issue. It looks like this is causing the trim to be incorrect now in this case. I opened a new issue here.

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