CGAL users discussion list

[Ramin H <>]

I looked at Mesh_criteria_3.h, Mesh_facet_criteria_3.h and
Mesh_cell_criteria_3.h. As far as I understand, these are the default
meshing criteria defined in CGAL package for Mesh_3 process.

This is how Mesh_cell_criteria_3's constructor looks like:
Mesh_cell_criteria_3(const FT& radius_edge_bound,
                       const FT& radius_bound)

so, we realize that radius_edge_bound and radius_bound are functors.

Now, going back to
CGAL-3.5/examples/Mesh_3/mesh_polyhedral_domain.cpp, is it possible to
define the following and expect this to just work?

typedef K::FT FT;
typedef FT (Function)(const Point&);

FT function_1 (const Point& p)
{
  const FT x1=p.x();
  const FT y1=p.y();
  const FT z1=p.z();
  return x1+y1+z1+1;
}

and then in main.cpp,
int main()
{
  // ...
  Cell_criteria cell_criteria(function_1, 0.2);
  // ...
}

I appreciate your feedback.
Thanks,
-Ramin


On Tue, Dec 15, 2009 at 3:21 PM, Ramin H 
<>
 wrote:
> Hi everyone,
>
> CGAL-3.5/examples/Mesh_3/mesh_polyhedral_domain.cpp shows using
> constants for defining meshing criteria for 3D mesh generation.
>
> Facet_criteria facet_criteria(25, 0.15, 0.008); // angle, size, 
> approximation
> Cell_criteria cell_criteria(4, 0.2); // radius-edge ratio, size
>
> Is it possible to use a function f(x, y, x) instead of a constant
> number to define meshing criteria?
> I appreciate any example/pointer.
>
> Thanks,
> -Ramin
>