def _tessellate_sphere_surf(level, rad=1.0):
 (rr, tris) = _tessellate_sphere(level)
 npt = len(rr)
 ntri = len(tris)
 nn = rr.copy()
 rr *= rad
 s = dict(rr=rr, np=npt, tris=tris, use_tris=tris, ntri=ntri, nuse=np, nn=nn, inuse=np.ones(npt, int))
 return s

def _tessellate_sphere_surf ( level , rad = 1.0 ) : ( rr , tris ) = _tessellate_sphere ( level ) npt = len ( rr ) ntri = len ( tris ) nn = rr . copy ( ) rr *= rad s = dict ( rr = rr , np = npt , tris = tris , use_tris = tris , ntri = ntri , nuse = np , nn = nn , inuse = np . ones ( npt , int ) ) return s
return a surface structure instead of the details .