code: def make_gradients(dims=DEFAULT_DIMS):
      
      return np.meshgrid(
          np.linspace(0.0, 1.0, dims[0]),
          np.linspace(0.0, 1.0, dims[1])
      )
docs: Makes a pair of gradients to generate textures from numpy primitives.
  
      Args:
          dims (pair): the dimensions of the surface to create
  
      Returns:
          pair: A pair of surfaces.