ADD: generate Cartesian coordinates for the centers of small spheres from Radius values

Signed-off-by: Supin P Surendran <supinps@gmail.com>
FIX: Coordinates changed to the surface of the large sphere

Signed-off-by: Supin P Surendran <supinps@gmail.com>
ADD: File Output Interface, Sphere Modelling

Signed-off-by: Supin P Surendran <supinps@gmail.com>
FIX: Duplication removed, Coordinates changed to centers of the sphere

Signed-off-by: Supin P Surendran <supinps@gmail.com>