def _do_surface_dots_subset(intrad, rsurf, rmags, rref, refl, lsurf, rlens, this_nn, cosmags, ws, volume, lut, n_fact, ch_type, idx):
 products = _fast_sphere_dot_r0(intrad, rsurf, rmags, lsurf, rlens, this_nn, cosmags, None, ws, volume, lut, n_fact, ch_type).T
 if (rref is not None):
  raise NotImplementedError
 return products

def _do_surface_dots_subset ( intrad , rsurf , rmags , rref , refl , lsurf , rlens , this_nn , cosmags , ws , volume , lut , n_fact , ch_type , idx ) : products = _fast_sphere_dot_r0 ( intrad , rsurf , rmags , lsurf , rlens , this_nn , cosmags , None , ws , volume , lut , n_fact , ch_type ) . T if ( rref is not None ) : raise NotImplementedError return products
helper for parallelization .