CGAL users discussion list

[Andreas Fabri <>]

Hi Samuel,

Note that the Polyhedron class doesn't compute the plane equations,
but only provides storage for them.

See 
http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/Polyhedron/Chapter_main.html#Subsection_12.3.4

Best regards,

andreas


samuel kim wrote:
> Hell all,
>
> I want to know how to remove this unexpected case. When get a facet normal
> vector from Halfedge, occasionally, some normal vectors returns -1.#IND00.
> Is this meaning that no nomal vector is on the facet? If so, what is the
> condition to avoid the facet that has no normal vector? Thank you.
>
> Example)        
> Vector Norm = pHalfEdge->facet()->normal();
> Norm[0] = -1.#IND00
> Norm[1] = -1.#IND00
> Norm[2] = -1.#IND00
>
> Samuel