I am just working on an older project in the WIP and noticed, that a type conversion doesn’t seem to work. Changing the corner type fixes the issue, Boundary Surfaces does work also.
might be related to: Curve-surface conversion error, bug? the script worked fine before though.
2025-07-16_issueWithOffsetCurveAndConversionToSurface.gh (8.3 KB)
Hi Jannis -
Thanks for that sample.
It’s not the type conversion that fails here, it’s the offset. With this sample, the Offset Curve component generates an open curve that is self-intersecting. I’ve tried creating a similar curve from scratch but that doesn’t seem to cause this failure.
I’ve put this issue on the list as RH-88434 Grasshopper: Offset Curve Regression Sample
For the time being, you could use the Boundary Surfaces component instead to create a surface from this input.
-wim
