graphene:sphere-init-from-vectors (sphere vectors center)

sphere -- a graphene:sphere-t instance to initialize
vectors -- a list of graphene:vec3-t instances
center -- a graphne:point3d-t instance with the center of the sphere, or nil

The initialized graphene:sphere-t instance.

Initializes the given sphere using the given list of 3D coordinates so that the sphere includes them. The center of the sphere can either be specified, or will be center of the 3D volume that encompasses all vectors.