def METHOD_NAME(self, verts):
    verts = np.array(verts)
    if self.orientation == 'XY':
        us, vs = verts[:,0], verts[:,1]
    elif self.orientation == 'YZ':
        us, vs = verts[:,1], verts[:,2]
    else: # XZ
        us, vs = verts[:,0], verts[:,2]
    return us, vs