Kernel::OrientedSide_3

Oriented_side	fo.operator() ( Kernel::Plane_3 h, Kernel::Point_3 p)
		returns ON_ORIENTED_BOUNDARY, ON_NEGATIVE_SIDE, or the constant ON_POSITIVE_SIDE, depending on the position of $$p relative to the oriented plane $$h.
Oriented_side	fo.operator() ( Kernel::Tetrahedron_3 t, Kernel::Point_3 p)
		returns ON_ORIENTED_BOUNDARY, ON_NEGATIVE_SIDE, or the constant ON_POSITIVE_SIDE, depending on the position of $$p relative to the oriented tetrahedron $$t.
Oriented_side	fo.operator() ( Kernel::Sphere_3 s, Kernel::Point_3 p)
		returns ON_ORIENTED_BOUNDARY, ON_NEGATIVE_SIDE, or the ON_POSITIVE_SIDE, depending on the position of p relative to the oriented sphere s.

Refines

See Also