side_of_oriented_sphere ( Point_3<Kernel> p,
Point_3<Kernel> q,
Point_3<Kernel> r,
Point_3<Kernel> s,
Point_3<Kernel> test)
returns the relative position of point test to the oriented sphere defined by p, q, r and s. The order of the points p, q, r, and s is important, since it determines the orientation of the implicitly constructed sphere. If the points p, q, r and s are positive oriented, positive side is the bounded interior of the sphere.
Precondition: p, q, r and s are not coplanar.

See Also