CGAL users discussion list

Hello,

I want to use CGAL::Bbox_3 as an AABB tree primitive, but in order to do 
that, I
must use a class that has a bbox() method, which Bbox_3 itself does not have. 
So
I tried to use the following class as a datum myself, but for some reason it
won't compile:

template<class K>
class My_box:public CGAL::Bbox_3{
public:
CGAL::Bbox_3 bbox() const {
        return K().construct_bbox_3_object()(copy);
                }
                
My_box(typename K::Iso_cuboid_3& ic): CGAL::Bbox_3(ic.xmin(), ic.ymin(),
ic.zmin(), ic.xmax(), ic.ymax(), ic.zmax()){copy=*this;}
                My_box(){}
        };

the line "return K().construct_bbox_3_object()(copy);" produces the error:

Error   11      error C2664: 'CGAL::Bbox_3
CGAL::CartesianKernelFunctors::Construct_bbox_3<K>::operator ()(const
CGAL::Circle_3<R_> &) const' : cannot convert parameter 1 from 'const
CGAL::Bbox_3' to 'const CGAL::Circle_3<R_> &'   

Please tell me how I can inherit this class safely so it can be cast as a bbox
object, but with the extra methods.

Thanks, Amir.