05-24-2012 02:34 PM
I have a model that exhibits strange behavior when calling api_check_face. For some reason, the first call to api_check_face() for a subset of the surfaces is clean. If api_check_face() is immediately called a second time for any of those faces, the check_status_list has an item with a check_missing_g2_disc_info status and the api returns the error "ACIS ERROR 80022 (DEGENERATE_FACE): face is degenerate." From then on, api_check_face behaves this way for this subset of faces.
Attached is one of those surfaces (extracted from the solid). Interestingly, this SAT file doesn't render in the web based B-rep Health checker ( http://web3d.spatial.com/ACISBrepHealth.aspx ) nor does it return a B-rep Health result.
Is there something I'm missing? Is there something in the model that explains this behavior?