'Returns the transformation equations obtained from translation
vector. Translation vector is defined as a linking vector of
origins of two coordinate systems.'

def _translation_trans_equations(self, inverse=False):

    if inverse:
        sign = (-1)
    else:
        sign = 1
    if (self._parent is None):
        return self.base_scalars()
    else:
        vec_component = self._origin.position_wrt(self._parent).components
        vec_norm_projections = []
        for i in self._parent.base_vectors():
            try:
                vec_norm_projections.append((sign * vec_component[i]))
            except:
                vec_norm_projections.append(0)
        return tuple([sum(i) for i in zip(vec_norm_projections, self.base_scalars())])
