OpenNurbs Brep Loop Definition

Hi. I’m trying to use OpenNurbs to read 3dm brep geometries and triangulate them by my own geometry core. However, this brep shown below (A nurbs surface boundeded by two edges) confused me a lot. Its loop seems not correct.
Is that a legal definition in OpenNurbs? Or is there something wrong in my code?


Hi @shushenrui1996,

Can you post the file containing the Brep?


– Dale