def test_compute_collisions_tree_3d():
references = [[
set([18, 19, 20, 21, 22, 23, 42, 43, 44, 45, 46, 47]),
set([0, 1, 2, 3, 4, 5, 24, 25, 26, 27, 28, 29])
],
[
set([6, 7, 8, 9, 10, 11, 30, 31, 32, 33, 34, 35]),
set([12, 13, 14, 15, 16, 17, 36, 37, 38, 39, 40, 41])
]]
points = [numpy.array([0.52, 0.51, 0.3]), numpy.array([0.9, -0.9, 0.3])]
for i, point in enumerate(points):
mesh_A = UnitCubeMesh(MPI.comm_world, 2, 2, 2)
mesh_B = UnitCubeMesh(MPI.comm_world, 2, 2, 2)
bgeom = mesh_B.geometry.points
bgeom += point
tree_A = BoundingBoxTree(mesh_A, mesh_A.topology.dim)
tree_B = BoundingBoxTree(mesh_B, mesh_B.topology.dim)
entities_A, entities_B = tree_A.compute_collisions_bb(tree_B)
assert set(entities_A) == references[i][0]
assert set(entities_B) == references[i][1]
def test_compute_first_entity_collision_3d():
reference = [876, 877, 878, 879, 880, 881]
p = numpy.array([0.3, 0.3, 0.3])
mesh = UnitCubeMesh(MPI.comm_world, 8, 8, 8)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
first = tree.compute_first_entity_collision(p, mesh)
assert first in reference
def test_compute_first_entity_collision_2d():
reference = [136, 137]
p = numpy.array([0.3, 0.3, 0.0])
mesh = UnitSquareMesh(MPI.comm_world, 16, 16)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
first = tree.compute_first_entity_collision(p, mesh)
assert first in reference
def test_compute_first_entity_collision_1d():
reference = [4]
p = numpy.array([0.3, 0, 0])
mesh = UnitIntervalMesh(MPI.comm_world, 16)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
first = tree.compute_first_entity_collision(p, mesh)
assert first in reference
def test_compute_entity_collisions_3d():
reference = set([876, 877, 878, 879, 880, 881])
p = numpy.array([0.3, 0.3, 0.3])
mesh = UnitCubeMesh(MPI.comm_world, 8, 8, 8)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entities = tree.compute_entity_collisions_mesh(p, mesh)
assert set(entities) == reference
def test_compute_entity_collisions_2d():
reference = set([136, 137])
p = numpy.array([0.3, 0.3, 0.0])
mesh = UnitSquareMesh(MPI.comm_world, 16, 16)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entities = tree.compute_entity_collisions_mesh(p, mesh)
assert set(entities) == reference
def test_compute_closest_entity_3d():
reference = (0, 0.1)
p = numpy.array([0.1, 0.05, -0.1])
mesh = UnitCubeMesh(MPI.comm_world, 8, 8, 8)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entity, distance = tree.compute_closest_entity(p, mesh)
assert entity == reference[0]
assert round(distance - reference[1], 7) == 0
def test_compute_first_collision_1d():
reference = {1: [4]}
p = numpy.array([0.3, 0, 0])
mesh = UnitIntervalMesh(MPI.comm_world, 16)
for dim in range(1, 2):
tree = BoundingBoxTree(mesh, dim)
first = tree.compute_first_collision(p)
assert first in reference[dim]
def test_compute_closest_entity_2d():
reference = (1, 1.0)
p = numpy.array([-1.0, 0.01, 0.0])
mesh = UnitSquareMesh(MPI.comm_world, 16, 16)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entity, distance = tree.compute_closest_entity(p, mesh)
assert entity == reference[0]
assert round(distance - reference[1], 7) == 0
def test_compute_collisions_point_1d():
reference = {1: set([4])}
p = numpy.array([0.3, 0, 0])
mesh = UnitIntervalMesh(MPI.comm_world, 16)
for dim in range(1, 2):
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entities = tree.compute_collisions_point(p)
assert set(entities) == reference[dim]
def test_compute_entity_collisions_tree_2d():
references = [[
set([20, 21, 22, 23, 28, 29, 30, 31]),
set([0, 1, 2, 3, 8, 9, 10, 11])
], [set([6]), set([25])]]
points = [numpy.array([0.52, 0.51, 0.0]), numpy.array([0.9, -0.9, 0.0])]
for i, point in enumerate(points):
mesh_A = UnitSquareMesh(MPI.comm_world, 4, 4)
mesh_B = UnitSquareMesh(MPI.comm_world, 4, 4)
bgeom = mesh_B.geometry.points
bgeom += point
tree_A = BoundingBoxTree(mesh_A, mesh_A.topology.dim)
tree_B = BoundingBoxTree(mesh_B, mesh_B.topology.dim)
entities_A, entities_B = tree_A.compute_entity_collisions_bb_mesh(
tree_B, mesh_A, mesh_B)
assert set(entities_A) == references[i][0]
assert set(entities_B) == references[i][1]
def test_compute_collisions_tree_1d():
references = [[
set([8, 9, 10, 11, 12, 13, 14, 15]),
set([0, 1, 2, 3, 4, 5, 6, 7])
], [set([14, 15]), set([0, 1])]]
points = [numpy.array([0.52, 0, 0]), numpy.array([0.9, 0, 0])]
for i, point in enumerate(points):
mesh_A = UnitIntervalMesh(MPI.comm_world, 16)
mesh_B = UnitIntervalMesh(MPI.comm_world, 16)
bgeom = mesh_B.geometry.points
bgeom += point[0]
tree_A = BoundingBoxTree(mesh_A, mesh_A.topology.dim)
tree_B = BoundingBoxTree(mesh_B, mesh_B.topology.dim)
entities_A, entities_B = tree_A.compute_collisions_bb(tree_B)
assert set(entities_A) == references[i][0]
assert set(entities_B) == references[i][1]
def test_compute_first_collision_2d():
# FIXME: This test should not use facet indices as there are no
# guarantees on how DOLFIN numbers facets
reference = {1: [226], 2: [136, 137]}
p = numpy.array([0.3, 0.3, 0.0])
mesh = UnitSquareMesh(MPI.comm_world, 16, 16)
for dim in range(1, 3):
tree = BoundingBoxTree(mesh, dim)
first = tree.compute_first_collision(p)
# FIXME: Facet test is excluded because it mistakenly relies in
# the facet indices
if dim != mesh.topology.dim - 1:
assert first in reference[dim]
def test_compute_collisions_point_2d():
# reference = {1: set([226]),
# 2: set([136, 137])}
p = numpy.array([0.3, 0.3, 0.0])
mesh = UnitSquareMesh(MPI.comm_world, 16, 16)
for dim in range(1, 3):
tree = BoundingBoxTree(mesh, mesh.topology.dim)
entities = tree.compute_collisions_point(p)
for e in entities:
ent = MeshEntity(mesh, dim, e)
mp = ent.midpoint()
x = (mp[0], mp[1])
print("test: {}".format(x))
def test_manifold_point_search():
# Simple two-triangle surface in 3d
vertices = [(0.0, 0.0, 1.0), (1.0, 1.0, 1.0), (1.0, 0.0, 0.0),
(0.0, 1.0, 0.0)]
cells = [(0, 1, 2), (0, 1, 3)]
mesh = Mesh(MPI.comm_world, CellType.triangle,
numpy.array(vertices, dtype=numpy.float64),
numpy.array(cells, dtype=numpy.int32), [],
cpp.mesh.GhostMode.none)
bb = BoundingBoxTree(mesh, mesh.topology.dim)
p = numpy.array([0.5, 0.25, 0.75])
assert bb.compute_first_entity_collision(p, mesh) == 0
p = numpy.array([0.25, 0.5, 0.75])
assert bb.compute_first_entity_collision(p, mesh) == 1
def test_compute_collisions_point_3d():
reference = {
1: set([1364]),
2: set([1967, 1968, 1970, 1972, 1974, 1976]),
3: set([876, 877, 878, 879, 880, 881])
}
p = numpy.array([0.3, 0.3, 0.3])
mesh = UnitCubeMesh(MPI.comm_world, 8, 8, 8)
tree = BoundingBoxTree(mesh, mesh.topology.dim)
for dim in range(1, 4):
entities = tree.compute_collisions_point(p)
# FIXME: Face and edges tests are excluded because test
# mistakingly relies on the face and edge indices
tdim = mesh.topology.dim
if dim != tdim - 1 and dim != tdim - 2:
assert set(entities) == reference[dim]
def test_compute_first_collision_3d():
# FIXME: This test should not use facet indices as there are no
# guarantees on how DOLFIN numbers facets
reference = {
1: [1364],
2: [1967, 1968, 1970, 1972, 1974, 1976],
3: [876, 877, 878, 879, 880, 881]
}
p = numpy.array([0.3, 0.3, 0.3])
mesh = UnitCubeMesh(MPI.comm_world, 8, 8, 8)
for dim in range(1, 4):
tree = BoundingBoxTree(mesh, dim)
first = tree.compute_first_collision(p)
# FIXME: Face and test is excluded because it mistakenly relies
# in the facet indices
tdim = mesh.topology.dim
if dim != tdim - 1 and dim != tdim - 2:
assert first in reference[dim]