CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Can you please try with Exact_predicates_exact_constructions_kernel and 
tell us whether you still observe the problem?

(this may be an floating point arithmetic problem)

Thanks.

S.

Benoît Presles wrote:
> Hello Everybody,
>
> I use the latest version of CGAL and I think a bug could be present in 
> the function "find_optimal_alpha" of the class "Alpha_shape_2".
> - First, I use the function "find_optimal_alpha" to find the best alpha 
> to get 1 connected component.
> - Second, I set this alpha.
> - Third, I use the function "number_of_solid_components" to get the 
> number of solid components of A.
>
> Sometimes, the program gives me 2 connected components instead of 1.
>
> Attached, you can fine the c++ code (basically the same as in the 
> example) and a list of points for which the program doesn't work as 
> expected.
>
>
> Thank you for your help,
> Best Regards,
> Ben_P