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+--- Thread: Ab4d.OpenCascade - Lost curves from loaded step file (/showthread.php?tid=4501)
Ab4d.OpenCascade - Lost curves from loaded step file - Artipo - 10-30-2025
Hi,
First of all thank you for your amazing work.
We are trying to use your library Ab4d.OpenCascade to load a sample '.stp' file our customer has provided.
This file contains multiple PRODUCT(...) whose geometries are curves.
From what I understood reading the file I think the geometries are contained in 'GEOMETRICALLY_BOUNDED_SURFACE_SHAPE_REPRESENTATION' rows.
I've tried loading the file in the Ab4d.CadImported sample project, but I wasn't unable to see the lines.
As a comparison I've loaded the same file in FreeCAD successfully, which from my knowledge uses OpenCascade as well.
So my question is, are curve lines supported by your library? Should I be tweaking something to be able to load them?
Thank you for your time.
F. Rossi - AlmaItalia