def coords_for_computations(self):
        """
        Return the coordinates from the center of the star for each element
        (either centers or vertices depending on the setting in the mesh).
        """

        # TODO: need to subtract the position offset if a Mesh (in orbit)
        if self._compute_at_vertices:
            if self.pvertices is not None:
                return self.pvertices - self._pos_center
            else:
                return self.vertices - self._pos_center
        else:
            return self.centers - self._pos_center