CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

You have either degenerate faces (0-area facets) or facets that are
made of more than 3 points that do not *exactly* lie in a plane.

Sebastien.


On 06/11/2012 03:40 PM, Luis wrote:
> Hi,
>
> I am trying to convert polydrons from off files into nef-polydrons.
> When I am compiling I get the following errors:
>
> Error !!!!!!!!!!!!!!!!!!!!!!!
> CGAL error: assertion violation!
> Expression : pe_prev->is_border() || !
> internal::Plane_constructor<Plane>::get_pl
> ane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_3\polyhedron_3_to_nef_3.
> h
> Line       : 252
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__1919.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__42.off
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> CGAL error: assertion violation!
> Expression : pe_prev->is_border() || !
> internal::Plane_constructor<Plane>::get_pl
> ane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_3\polyhedron_3_to_nef_3.
> h
> Line       : 252
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__484.off
> Error !!!!!!!!!!!!!!!!!!!!!!!
> Error !!!!!!!!!!!!!!!!!!!!!!!
> CGAL error: assertion violation!
> Expression : pe_prev->is_border() || !
> internal::Plane_constructor<Plane>::get_pl
> ane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_3\polyhedron_3_to_nef_3.
> h
> Line       : 252
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__563.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__570.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__572.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__573.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__603.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__605.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__646.off
> CGAL error: assertion violation!
> Expression : e->incident_sface() != SFace_const_handle()
> File       : c:\program files\cgal-3.9\include\cgal
> \nef_s2\sm_const_decorator.h
> Line       : 319
> Explanation:
> Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html
> found an exception! BldgElem__649.off
>
> I believe the problem is when changing from polyhedron to nef-polyhedron, any
> help works great, thank you.
>
> Luis Rodriguez