## Kernel::ComputeSquaredRadius_3

A model for this must provide:

Kernel::FT | fo.operator() ( Kernel::Sphere_3 s)
|  | returns the squared radius of s.

Kernel::FT

fo.operator() ( | Kernel::Point_3 p, Kernel::Point_3 q, Kernel::Point_3 r, Kernel::Point_3 s)

|  | returns the squared radius of the sphere passing through p, q, r and s. Precondition: p, q, r and s are not coplanar.

Kernel::FT

fo.operator() ( | Kernel::Point_3 p, Kernel::Point_3 q, Kernel::Point_3 r)

|  | returns the squared radius of the sphere passing through p, q and r, and whose center is in the plane defined by these three points.

Kernel::FT

fo.operator() ( | Kernel::Point_3 p, Kernel::Point_3 q)

|  | returns the squared radius of the smallest circle passing through p, and q, i.e. one fourth of the squared distance between p and q.

### Refines

AdaptableFunctor (with one argument)

### See Also

CGAL::Sphere_3<Kernel>
CGAL::squared_radius