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# -*- coding: utf-8 -*-
# Licensed under a 3-clause BSD style license - see LICENSE.rst
from __future__ import (absolute_import, unicode_literals, division,
print_function)
from ..matrix_utilities import (rotation_matrix,
matrix_product, matrix_transpose)
from ..baseframe import frame_transform_graph
from ..transformations import StaticMatrixTransform
from .galactic import Galactic
from .supergalactic import Supergalactic
@frame_transform_graph.transform(StaticMatrixTransform, Galactic, Supergalactic)
def gal_to_supergal():
mat1 = rotation_matrix(90, 'z')
mat2 = rotation_matrix(90 - Supergalactic._nsgp_gal.b.degree, 'y')
mat3 = rotation_matrix(Supergalactic._nsgp_gal.l.degree, 'z')
return matrix_product(mat1, mat2, mat3)
@frame_transform_graph.transform(StaticMatrixTransform, Supergalactic, Galactic)
def supergal_to_gal():
return matrix_transpose(gal_to_supergal())
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