CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 11/01/2012 03:41 PM, drrk wrote:
> I am reading a mesh that contains polygonal data. The mesh loads fine in
> various software such as MeshLab but when I call the is_valid() function of
> Polyhedron_3<Kernel>  where Kernel is Cartesian<double>  it returns false.
>
> What criteria have to be satisfied before is_valid( ) accepts a mesh to be
> valid.
If you simply call is_valid() with no argument, it checks only if the 
combinatorial structure is a valid (that is the embedding is not checked).

You have an error when the data you have is not manifold (3 facets 
incident to the same edge...)

If you call is_valid(true), you might get hints on the nature of the
problem.

Sebastien.

> RK
>
>
>
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