def test_intersection_with_translation(self):
a = Node(name="A", parent=None)
b = Node(name="B", parent=a)
b.geometry = Sphere(radius=1.0)
b.translate((1.0, 0.0, 0.0))
aloc = (-2.0, 0.0, 0.0)
avec = (1.0, 0.0, 0.0)
bloc = b.point_to_node(aloc, b)
bvec = b.vector_to_node(avec, b)
intersections = b.intersections(bloc, bvec)
points = tuple(x.point for x in intersections)
assert np.allclose(points, ((-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)))
# In local frame of b sphere is at origin
intersections = a.intersections(aloc, avec)
points = np.array(tuple(x.to(a).point for x in intersections))
expected = np.array(((0.0, 0.0, 0.0), (2.0, 0.0, 0.0)))
# In frame of a everything is shifed 1 along x
assert np.allclose(points, expected)
def test_intersections(self):
a = Node(name="A", parent=None)
b = Node(name="B", parent=a)
b.geometry = Sphere(radius=1.0)
loc = (-1.0, 0.0, 0.0)
vec = (1.0, 0.0, 0.0)
intersections = b.intersections(loc, vec)
points = np.array([x.point for x in intersections])
assert np.allclose(points, ((-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)))
def test_intersection_with_translation(self):
a = Node(name="A", parent=None)
b = Node(name="B", parent=a)
b.geometry = Sphere(radius=1.0)
b.translate((1.0, 0.0, 0.0))
aloc = (-2.0, 0.0, 0.0)
avec = (1.0, 0.0, 0.0)
bloc = b.point_to_node(aloc, b)
bvec = b.vector_to_node(avec, b)
intersections = b.intersections(bloc, bvec)
points = tuple(x.point for x in intersections)
assert np.allclose(points, ((-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)))
# In local frame of b sphere is at origin
intersections = a.intersections(aloc, avec)
points = np.array(tuple(x.to(a).point for x in intersections))
expected = np.array(((0.0, 0.0, 0.0), (2.0, 0.0, 0.0)))
# In frame of a everything is shifed 1 along x
assert np.allclose(points, expected)
def test_intersections(self):
a = Node(name="A", parent=None)
b = Node(name="B", parent=a)
b.geometry = Sphere(radius=1.0)
loc = (-1.0, 0.0, 0.0)
vec = (1.0, 0.0, 0.0)
intersections = b.intersections(loc, vec)
points = np.array([x.point for x in intersections])
assert np.allclose(points, ((-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)))
def test_intersection_when_on_surface(self):
""" Make sure we return intersection points even with zero distance from ray.
"""
a = Node(name="A", parent=None)
a.geometry = Sphere(radius=1.0)
loc = (-1.0, 0.0, 0.0)
vec = (1.0, 0.0, 0.0)
intersections = a.intersections(loc, vec)
points = np.array([x.point for x in intersections])
expected = np.array([(-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)])
assert np.allclose(points, expected)
def test_intersection_when_on_surface(self):
""" Make sure we return intersection points even with zero distance from ray.
"""
a = Node(name="A", parent=None)
a.geometry = Sphere(radius=1.0)
loc = (-1.0, 0.0, 0.0)
vec = (1.0, 0.0, 0.0)
intersections = a.intersections(loc, vec)
points = np.array([x.point for x in intersections])
expected = np.array([(-1.0, 0.0, 0.0), (1.0, 0.0, 0.0)])
assert np.allclose(points, expected)
