The class Fuzzy_sphere<Traits> implements fuzzy $$ddimensional spheres. A fuzzy sphere with radius $$r and fuzziness value $$ has as outer approximation a sphere with radius $$r+ and as inner approximation a sphere with radius $$r.
#include <CGAL/Fuzzy_sphere.h>
Expects for the template argument a model of the concept SearchTraits, for example CGAL::Cartesian_d<double>.

 Point type. 

 Number type. 
 
Constructs a fuzzy sphere
centered at center with radius radius and fuzziness value epsilon.


 
test whether $$s contains $$p.  

 
test whether the inner sphere intersects the rectangle associated with a node of a tree.  

 
test whether the outer sphere encloses the rectangle associated with a node of a tree. 