def testDihedralAngles(self):
from csb.numeric import dihedral_angle
a = np.array([1, 0., 0.])
b = np.array([0, 0., 0.])
c = np.array([0, 1., 0.])
d = np.array([0, 1., -1.])
self.assertEqual(dihedral_angle(a, b, c, d), 90.0)
self.assertEqual(dihedral_angle(a, b, c, d + a), 45.0)
self.assertEqual(dihedral_angle(a, b, c, a), 0.0)
self.assertEqual(dihedral_angle(a, b, c, -d), -90.0)
def testDihedralAngles(self):
"""
r526
"""
from csb.numeric import dihedral_angle
a = np.array([2, 0., 0.])
b = np.array([0, 0., 0.])
c = np.array([0, 2., 0.])
d = np.array([0, 4., -4.])
self.assertEqual(dihedral_angle(a, b, c, d), 90.0)
self.assertEqual(dihedral_angle(a, b, c, a), 0.0)
self.assertEqual(dihedral_angle(a, b, c, -d), -90.0)
