intersectsSphere 
  Checks whether the given @sphere intersects a plane of a #graphene_frustum_t.
Return
true if the sphere intersects the frustum
Since
1.2
Parameters
sphere
a #graphene_sphere_t
Checks whether the given @sphere intersects a plane of a #graphene_frustum_t.
true if the sphere intersects the frustum
1.2
a #graphene_sphere_t