CGAL::theta_extremal_points

#include <CGAL/global_functions_spherical_kernel_3.h>

template < class OutputIterator >
OutputIterator	theta_extremal_points ( Circle_3<SphericalKernel> c, Sphere_3<SphericalKernel> sphere, OutputIterator res)
		Copies in the output iterator the -extremal points of the circle relatively to sphere. res iterates on elements of type Circular_arc_point_3<SphericalKernel>, lexicographically sorted in the cylindrical coordinate system relative to sphere. See section 14.2 for definitions. Precondition:  c lies on sphere and is a normal circle.