def setUp(self):
# Two rays inside, two outside; two horizontal, two slanted.
pos = N.c_[[0., 0., 0.], [0., 0., 0.], [0., 1., 0.], [0., 1., 0.],
[0., 1., 0.], [0., 1., 0.1], [0., 0.2, -0.06], [0., 0., 0.03]]
dir = N.c_[[0., 1., 0.], [0., 1., 1.], [0.,-1., 0.], [0.,-1., 1.],
[0., -1., 0.05], [0., -1., -0.05], [0., 1., 0.2], [0., 1., 0.1]]
dir /= N.sqrt(N.sum(dir**2, axis=0))
self.bund = RayBundle(pos, dir)
self.gm = FiniteCylinder(diameter=1., height=0.1)
class TestFiniteCylinder(unittest.TestCase):
"""Just see that it throws out the right rays"""
def setUp(self):
# Two rays inside, two outside; two horizontal, two slanted.
pos = N.c_[[0., 0., 0.], [0., 0., 0.], [0., 1., 0.], [0., 1., 0.],
[0., 1., 0.], [0., 1., 0.1], [0., 0.2, -0.06],
[0., 0., 0.03]]
dir = N.c_[[0., 1., 0.], [0., 1., 1.], [0., -1., 0.], [0., -1., 1.],
[0., -1., 0.05], [0., -1., -0.05], [0., 1., 0.2],
[0., 1., 0.1]]
dir /= N.sqrt(N.sum(dir**2, axis=0))
self.bund = RayBundle(pos, dir)
self.gm = FiniteCylinder(diameter=1., height=0.1)
def test_vertical(self):
"""Finite cylinder parallel to the Z axis"""
correct_prm = N.r_[0.5, 0, 0.5, 0, 0.50062461, 1.50187383, 0.30594117,
0.]
prm = self.gm.find_intersections(N.eye(4), self.bund)
N.testing.assert_array_equal(prm[[1, 3, 7]], N.ones(3) * N.inf)
prm[[1, 3, 7]] = 0.
N.testing.assert_array_almost_equal(prm, correct_prm)
self.gm.select_rays(N.r_[0, 2])
correct_norm = N.c_[[0., -1., 0.], [0., 1., 0.]]
norm = self.gm.get_normals()
N.testing.assert_array_almost_equal(norm, correct_norm)
correct_pts = N.c_[[0., 0.5, 0.], [0., 0.5, 0.]]
pts = self.gm.get_intersection_points_global()
N.testing.assert_array_almost_equal(pts, correct_pts)
def test_rotated(self):
"""Rotate finite cylinder by 30 degrees"""
frame = rotx(N.pi / 6)
correct_prm = N.empty(8)
correct_prm.fill(N.inf)
prm = self.gm.find_intersections(frame, self.bund)
N.testing.assert_array_equal(prm, correct_prm)
def test_mesh(self):
"""Cylindrical mesh OK"""
x, y, z = self.gm.mesh(20)
self.failUnless(N.allclose(x**2 + y**2, 0.25))
class TestFiniteCylinder(unittest.TestCase):
"""Just see that it throws out the right rays"""
def setUp(self):
# Two rays inside, two outside; two horizontal, two slanted.
pos = N.c_[[0., 0., 0.], [0., 0., 0.], [0., 1., 0.], [0., 1., 0.],
[0., 1., 0.], [0., 1., 0.1], [0., 0.2, -0.06], [0., 0., 0.03]]
dir = N.c_[[0., 1., 0.], [0., 1., 1.], [0.,-1., 0.], [0.,-1., 1.],
[0., -1., 0.05], [0., -1., -0.05], [0., 1., 0.2], [0., 1., 0.1]]
dir /= N.sqrt(N.sum(dir**2, axis=0))
self.bund = RayBundle(pos, dir)
self.gm = FiniteCylinder(diameter=1., height=0.1)
def test_vertical(self):
"""Finite cylinder parallel to the Z axis"""
correct_prm = N.r_[0.5, 0, 0.5, 0, 0.50062461, 1.50187383, 0.30594117, 0.]
prm = self.gm.find_intersections(N.eye(4), self.bund)
N.testing.assert_array_equal(prm[[1,3, 7]], N.ones(3)*N.inf)
prm[[1,3, 7]] = 0.
N.testing.assert_array_almost_equal(prm, correct_prm)
self.gm.select_rays(N.r_[0, 2])
correct_norm = N.c_[[0.,-1., 0.], [0.,1., 0.]]
norm = self.gm.get_normals()
N.testing.assert_array_almost_equal(norm, correct_norm)
correct_pts = N.c_[[0., 0.5, 0.], [0., 0.5, 0.]]
pts = self.gm.get_intersection_points_global()
N.testing.assert_array_almost_equal(pts, correct_pts)
def test_rotated(self):
"""Rotate finite cylinder by 30 degrees"""
frame = rotx(N.pi/6)
correct_prm = N.empty(8)
correct_prm.fill(N.inf)
prm = self.gm.find_intersections(frame, self.bund)
N.testing.assert_array_equal(prm, correct_prm)
def test_mesh(self):
"""Cylindrical mesh OK"""
x, y, z = self.gm.mesh(20)
self.failUnless(N.allclose(x**2 + y**2, 0.25))
