def test_get_triangles_and_vertices_per_node(self):
"""test_get_triangles_and_vertices_per_node -
Test that tuples of triangle, vertex can be extracted
from inverted triangles structure
"""
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
#bac, bce, ecf, dbe, daf, dae
triangles = num.array([[1,0,2], [1,2,4], [4,2,5], [3,1,4]])
domain = General_mesh(nodes, triangles)
# One node
L = domain.get_triangles_and_vertices_per_node(node=2)
assert num.allclose(L[0], [0, 2])
assert num.allclose(L[1], [1, 1])
assert num.allclose(L[2], [2, 1])
# All nodes
ALL = domain.get_triangles_and_vertices_per_node()
assert len(ALL) == 6
for i, Lref in enumerate(ALL):
L = domain.get_triangles_and_vertices_per_node(node=i)
assert num.allclose(L, Lref)
def test_get_triangles_and_vertices_per_node(self):
"""test_get_triangles_and_vertices_per_node -
Test that tuples of triangle, vertex can be extracted
from inverted triangles structure
"""
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
#bac, bce, ecf, dbe, daf, dae
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
domain = General_mesh(nodes, triangles)
# One node
L = domain.get_triangles_and_vertices_per_node(node=2)
assert num.allclose(L[0], [0, 2])
assert num.allclose(L[1], [1, 1])
assert num.allclose(L[2], [2, 1])
# All nodes
ALL = domain.get_triangles_and_vertices_per_node()
assert len(ALL) == 6
for i, Lref in enumerate(ALL):
L = domain.get_triangles_and_vertices_per_node(node=i)
assert num.allclose(L, Lref)
def test_get_vertex_coordinates_with_geo_ref(self):
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1,0,2], [1,2,4], [4,2,5], [3,1,4]], num.int)
domain = General_mesh(nodes, triangles, geo_reference=geo)
verts = domain.get_vertex_coordinates(triangle_id=0) # bac
msg = ("num.array([b,a,c])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([b,a,c])), str(verts)))
self.assertTrue(num.allclose(num.array([b,a,c]), verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0)
msg = ("num.array([b,a,c])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([b,a,c])), str(verts)))
self.assert_(num.allclose(num.array([b,a,c]), verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0, absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([nodes_absolute[1],
nodes_absolute[0],
nodes_absolute[2]])),
str(verts)))
self.assert_(num.allclose(num.array([nodes_absolute[1],
nodes_absolute[0],
nodes_absolute[2]]),
verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0,
absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([nodes_absolute[1],
nodes_absolute[0],
nodes_absolute[2]])),
str(verts)))
self.assert_(num.allclose(num.array([nodes_absolute[1],
nodes_absolute[0],
nodes_absolute[2]]),
verts), msg)
def test_vertex_value_indices(self):
"""Check that structures are correct.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
#bac, bce, ecf, dbe, daf, dae
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
domain1 = General_mesh(nodes, triangles)
#Create larger mesh
nodes, triangles, _ = rectangular(3, 6)
domain2 = General_mesh(nodes, triangles)
# Test both meshes
for domain in [domain1, domain2]:
assert sum(domain.number_of_triangles_per_node) ==\
len(domain.vertex_value_indices)
# Check number of triangles per node
count = [0] * domain.number_of_nodes
for triangle in domain.triangles:
for i in triangle:
count[i] += 1
#print count
#
assert num.allclose(count, domain.number_of_triangles_per_node)
# Check indices
current_node = 0
k = 0 # Track triangles touching on node
for index in domain.vertex_value_indices:
k += 1
triangle = old_div(index, 3)
vertex = index % 3
assert domain.triangles[triangle, vertex] == current_node
if domain.number_of_triangles_per_node[current_node] == k:
# Move on to next node
k = 0
current_node += 1
def test_get_unique_vertex_values(self):
"""
get unique_vertex based on triangle lists.
"""
#Create basic mesh
points, vertices, boundary = rectangular(1, 3)
domain = General_mesh(points, vertices)
assert domain.get_unique_vertices() == [0, 1, 2, 3, 4, 5, 6, 7]
unique_vertices = domain.get_unique_vertices([0, 1, 4])
assert unique_vertices == [0, 1, 2, 4, 5, 6, 7]
unique_vertices = domain.get_unique_vertices([0, 4])
assert unique_vertices == [0, 2, 4, 5, 6, 7]
def test_get_node(self):
"""test_get_triangles_and_vertices_per_node -
Test that tuples of triangle, vertex can be extracted
from inverted triangles structure
"""
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1,0,2], [1,2,4], [4,2,5], [3,1,4]])
domain = General_mesh(nodes, triangles, geo_reference = geo)
node = domain.get_node(2)
msg = ('\nc=%s\nnode=%s' % (str(c), str(node)))
self.assertTrue(num.alltrue(c == node), msg)
# repeat get_node(), see if result same
node = domain.get_node(2)
msg = ('\nc=%s\nnode=%s' % (str(c), str(node)))
self.assertTrue(num.alltrue(c == node), msg)
node = domain.get_node(2, absolute=True)
msg = ('\nnodes_absolute[2]=%s\nnode=%s'
% (str(nodes_absolute[2]), str(node)))
self.assertTrue(num.alltrue(nodes_absolute[2] == node), msg)
# repeat get_node(2, absolute=True), see if result same
node = domain.get_node(2, absolute=True)
msg = ('\nnodes_absolute[2]=%s\nnode=%s'
% (str(nodes_absolute[2]), str(node)))
self.assertTrue(num.alltrue(nodes_absolute[2] == node), msg)
def test_get_unique_vertex_values(self):
"""
get unique_vertex based on triangle lists.
"""
#Create basic mesh
points, vertices, boundary = rectangular(1, 3)
domain = General_mesh(points, vertices)
assert domain.get_unique_vertices() == [0,1,2,3,4,5,6,7]
unique_vertices = domain.get_unique_vertices([0,1,4])
unique_vertices.sort()
assert unique_vertices == [0,1,2,4,5,6,7]
unique_vertices = domain.get_unique_vertices([0,4])
unique_vertices.sort()
assert unique_vertices == [0,2,4,5,6,7]
def test_get_vertex_coordinates(self):
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
V = domain.get_vertex_coordinates()
assert V.shape[0] == 3 * M
for i in range(M):
for j in range(3):
k = triangles[i, j] #Index of vertex j in triangle i
assert num.allclose(V[3 * i + j, :], nodes[k])
def test_get_edge_midpoint_coordinates_with_geo_ref(self):
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = num.array([0.0, 0.0])
b = num.array([0.0, 2.0])
c = num.array([2.0, 0.0])
d = num.array([0.0, 4.0])
e = num.array([2.0, 2.0])
f = num.array([4.0, 0.0])
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]],
num.int)
domain = General_mesh(nodes, triangles, geo_reference=geo)
verts = domain.get_edge_midpoint_coordinates(triangle_id=0) # bac
msg = (
"num.array(1/2[a+c,b+c,a+b])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([0.5 * (a + c), 0.5 * (b + c), 0.5 *
(a + b)])), str(verts)))
self.assertTrue(
num.allclose(
num.array([0.5 * (a + c), 0.5 * (b + c), 0.5 * (a + b)]),
verts), msg)
verts = domain.get_edge_midpoint_coordinates(triangle_id=0,
absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s" %
(str(0.5 * num.array([
nodes_absolute[0] + nodes_absolute[2], nodes_absolute[1] +
nodes_absolute[2], nodes_absolute[1] + nodes_absolute[0]
])), str(verts)))
self.assertTrue(
num.allclose(
0.5 * num.array([
nodes_absolute[0] + nodes_absolute[2], nodes_absolute[1] +
nodes_absolute[2], nodes_absolute[1] + nodes_absolute[0]
]), verts), msg)
def test_get_vertex_values(self):
"""Get connectivity based on triangle lists.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
msg = ("domain.get_triangles()=\n%s\nshould be the same as "
"'triangles'=\n%s"
% (str(domain.get_triangles()), str(triangles)))
assert num.allclose(domain.get_triangles(), triangles), msg
msg = ("domain.get_triangles([0,4])=\n%s\nshould be the same as "
"'[triangles[0], triangles[4]]' which is\n%s"
% (str(domain.get_triangles([0,4])),
str([triangles[0], triangles[4]])))
assert num.allclose(domain.get_triangles([0,4]),
[triangles[0], triangles[4]]), msg
def test_get_vertex_coordinates(self):
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
V = domain.get_vertex_coordinates()
assert V.shape[0] == 3*M
for i in range(M):
for j in range(3):
k = triangles[i,j] #Index of vertex j in triangle i
assert num.allclose(V[3*i+j,:], nodes[k])
def test_get_vertex_coordinates_triangle_id(self):
"""test_get_vertex_coordinates_triangle_id
Test that vertices for one triangle can be returned.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
for i in range(M):
V = domain.get_vertex_coordinates(triangle_id=i)
assert V.shape[0] == 3
for j in range(3):
k = triangles[i, j] #Index of vertex j in triangle i
assert num.allclose(V[j, :], nodes[k])
def test_get_edge_midpoint_coordinates_triangle_id(self):
"""test_get_vertex_coordinates_triangle_id
Test that vertices for one triangle can be returned.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
for i in range(M):
E = domain.get_edge_midpoint_coordinates(triangle_id=i)
assert E.shape[0] == 3
k0 = triangles[i, 0] #Index of vertex 0 in triangle i
k1 = triangles[i, 1] #Index of vertex 0 in triangle i
k2 = triangles[i, 2] #Index of vertex 0 in triangle i
assert num.allclose(E[0, :], 0.5 * (nodes[k1] + nodes[k2]))
assert num.allclose(E[1, :], 0.5 * (nodes[k0] + nodes[k2]))
assert num.allclose(E[2, :], 0.5 * (nodes[k1] + nodes[k0]))
E0 = domain.get_edge_midpoint_coordinate(i, 0)
E1 = domain.get_edge_midpoint_coordinate(i, 1)
E2 = domain.get_edge_midpoint_coordinate(i, 2)
assert num.allclose(E0, 0.5 * (nodes[k1] + nodes[k2]))
assert num.allclose(E1, 0.5 * (nodes[k0] + nodes[k2]))
assert num.allclose(E2, 0.5 * (nodes[k1] + nodes[k0]))
def test_get_edge_midpoint_coordinates(self):
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
E = domain.get_edge_midpoint_coordinates()
assert E.shape[0] == 3 * M
for i in range(M):
k0 = triangles[i, 0] #Index of vertex 0 in triangle i
k1 = triangles[i, 1] #Index of vertex 1 in triangle i
k2 = triangles[i, 2] #Index of vertex 2 in triangle i
assert num.allclose(E[3 * i + 0, :], 0.5 * (nodes[k1] + nodes[k2]))
assert num.allclose(E[3 * i + 1, :], 0.5 * (nodes[k0] + nodes[k2]))
assert num.allclose(E[3 * i + 2, :], 0.5 * (nodes[k1] + nodes[k0]))
def test_get_vertex_coordinates_triangle_id(self):
"""test_get_vertex_coordinates_triangle_id
Test that vertices for one triangle can be returned.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
for i in range(M):
V = domain.get_vertex_coordinates(triangle_id=i)
assert V.shape[0] == 3
for j in range(3):
k = triangles[i,j] #Index of vertex j in triangle i
assert num.allclose(V[j,:], nodes[k])
def test_assert_index_in_nodes(self):
"""test_assert_index_in_nodes -
Test that node indices in triangles are within nodes array.
"""
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# max index is 5, use 5, expect success
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
General_mesh(nodes, triangles, geo_reference=geo)
# should fail with negative area
triangles = num.array([[0, 1, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
self.assertRaises(AssertionError,
General_mesh,
nodes,
triangles,
geo_reference=geo)
# max index is 5, use 6, expect assert failure
triangles = num.array([[1, 6, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
self.assertRaises(AssertionError,
General_mesh,
nodes,
triangles,
geo_reference=geo)
# max index is 5, use 10, expect assert failure
triangles = num.array([[1, 10, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
self.assertRaises(AssertionError,
General_mesh,
nodes,
triangles,
geo_reference=geo)
def test_get_edge_midpoint_coordinates(self):
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
E = domain.get_edge_midpoint_coordinates()
assert E.shape[0] == 3*M
for i in range(M):
k0 = triangles[i,0] #Index of vertex 0 in triangle i
k1 = triangles[i,1] #Index of vertex 1 in triangle i
k2 = triangles[i,2] #Index of vertex 2 in triangle i
assert num.allclose(E[3*i+0,:], 0.5*(nodes[k1]+nodes[k2]) )
assert num.allclose(E[3*i+1,:], 0.5*(nodes[k0]+nodes[k2]) )
assert num.allclose(E[3*i+2,:], 0.5*(nodes[k1]+nodes[k0]) )
def test_get_edge_midpoint_coordinates_triangle_id(self):
"""test_get_vertex_coordinates_triangle_id
Test that vertices for one triangle can be returned.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
assert num.allclose(domain.get_nodes(), nodes)
M = domain.number_of_triangles
for i in range(M):
E = domain.get_edge_midpoint_coordinates(triangle_id=i)
assert E.shape[0] == 3
k0 = triangles[i,0] #Index of vertex 0 in triangle i
k1 = triangles[i,1] #Index of vertex 0 in triangle i
k2 = triangles[i,2] #Index of vertex 0 in triangle i
assert num.allclose(E[0,:], 0.5*(nodes[k1]+nodes[k2]))
assert num.allclose(E[1,:], 0.5*(nodes[k0]+nodes[k2]))
assert num.allclose(E[2,:], 0.5*(nodes[k1]+nodes[k0]))
E0 = domain.get_edge_midpoint_coordinate(i, 0 )
E1 = domain.get_edge_midpoint_coordinate(i, 1 )
E2 = domain.get_edge_midpoint_coordinate(i, 2 )
assert num.allclose(E0, 0.5*(nodes[k1]+nodes[k2]))
assert num.allclose(E1, 0.5*(nodes[k0]+nodes[k2]))
assert num.allclose(E2, 0.5*(nodes[k1]+nodes[k0]))
def test_get_edge_midpoint_coordinates_with_geo_ref(self):
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = num.array([0.0, 0.0])
b = num.array([0.0, 2.0])
c = num.array([2.0, 0.0])
d = num.array([0.0, 4.0])
e = num.array([2.0, 2.0])
f = num.array([4.0, 0.0])
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1,0,2], [1,2,4], [4,2,5], [3,1,4]], num.int)
domain = General_mesh(nodes, triangles, geo_reference=geo)
verts = domain.get_edge_midpoint_coordinates(triangle_id=0) # bac
msg = ("num.array(1/2[a+c,b+c,a+b])=\n%s\nshould be close to 'verts'=\n%s"
% (str(num.array([0.5*(a+c),0.5*(b+c),0.5*(a+b)])), str(verts)))
self.assertTrue(num.allclose(num.array([0.5*(a+c),0.5*(b+c),0.5*(a+b)]), verts), msg)
verts = domain.get_edge_midpoint_coordinates(triangle_id=0, absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s"
% (str(0.5*num.array([nodes_absolute[0]+nodes_absolute[2],
nodes_absolute[1]+nodes_absolute[2],
nodes_absolute[1]+nodes_absolute[0]])),
str(verts)))
self.assert_(num.allclose(0.5*num.array([nodes_absolute[0]+nodes_absolute[2],
nodes_absolute[1]+nodes_absolute[2],
nodes_absolute[1]+nodes_absolute[0]]),
verts), msg)
def test_get_vertex_coordinates_with_geo_ref(self):
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]],
num.int)
domain = General_mesh(nodes, triangles, geo_reference=geo)
verts = domain.get_vertex_coordinates(triangle_id=0) # bac
msg = ("num.array([b,a,c])=\n%s\nshould be close to 'verts'=\n%s" %
(str(num.array([b, a, c])), str(verts)))
self.assertTrue(num.allclose(num.array([b, a, c]), verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0)
msg = ("num.array([b,a,c])=\n%s\nshould be close to 'verts'=\n%s" %
(str(num.array([b, a, c])), str(verts)))
self.assertTrue(num.allclose(num.array([b, a, c]), verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0, absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s" % (str(
num.array([
nodes_absolute[1], nodes_absolute[0], nodes_absolute[2]
])), str(verts)))
self.assertTrue(
num.allclose(
num.array(
[nodes_absolute[1], nodes_absolute[0], nodes_absolute[2]]),
verts), msg)
verts = domain.get_vertex_coordinates(triangle_id=0, absolute=True)
msg = ("num.array([...])=\n%s\nshould be close to 'verts'=\n%s" % (str(
num.array([
nodes_absolute[1], nodes_absolute[0], nodes_absolute[2]
])), str(verts)))
self.assertTrue(
num.allclose(
num.array(
[nodes_absolute[1], nodes_absolute[0], nodes_absolute[2]]),
verts), msg)
def test_two_degenerate_triangles(self):
a = num.array([1.0, 1.0])
b = num.array([0.0, 2.0])
c = num.array([2.0, 0.0])
d = num.array([1.0, 2.0])
e = num.array([2.0, 2.0])
f = num.array([4.0, 0.0])
nodes = num.array([a, b, c, d, e, f])
# bac, bce, ecf, dbe
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]],
num.int)
try:
domain = General_mesh(nodes, triangles)
except AssertionError:
#print 'excepted assertion error'
pass
def test_get_node(self):
"""test_get_triangles_and_vertices_per_node -
Test that tuples of triangle, vertex can be extracted
from inverted triangles structure
"""
x0 = 314036.58727982
y0 = 6224951.2960092
geo = Geo_reference(56, x0, y0)
a = [0.0, 0.0]
b = [0.0, 2.0]
c = [2.0, 0.0]
d = [0.0, 4.0]
e = [2.0, 2.0]
f = [4.0, 0.0]
nodes = num.array([a, b, c, d, e, f])
nodes_absolute = geo.get_absolute(nodes)
# bac, bce, ecf, dbe
triangles = num.array([[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]])
domain = General_mesh(nodes, triangles, geo_reference=geo)
node = domain.get_node(2)
msg = ('\nc=%s\nnode=%s' % (str(c), str(node)))
self.assertTrue(num.alltrue(c == node), msg)
# repeat get_node(), see if result same
node = domain.get_node(2)
msg = ('\nc=%s\nnode=%s' % (str(c), str(node)))
self.assertTrue(num.alltrue(c == node), msg)
node = domain.get_node(2, absolute=True)
msg = ('\nnodes_absolute[2]=%s\nnode=%s' %
(str(nodes_absolute[2]), str(node)))
self.assertTrue(num.alltrue(nodes_absolute[2] == node), msg)
# repeat get_node(2, absolute=True), see if result same
node = domain.get_node(2, absolute=True)
msg = ('\nnodes_absolute[2]=%s\nnode=%s' %
(str(nodes_absolute[2]), str(node)))
self.assertTrue(num.alltrue(nodes_absolute[2] == node), msg)
def test_get_vertex_values(self):
"""Get connectivity based on triangle lists.
"""
from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular
#Create basic mesh
nodes, triangles, _ = rectangular(1, 3)
domain = General_mesh(nodes, triangles)
msg = ("domain.get_triangles()=\n%s\nshould be the same as "
"'triangles'=\n%s" %
(str(domain.get_triangles()), str(triangles)))
assert num.allclose(domain.get_triangles(), triangles), msg
msg = ("domain.get_triangles([0,4])=\n%s\nshould be the same as "
"'[triangles[0], triangles[4]]' which is\n%s" %
(str(domain.get_triangles(
[0, 4])), str([triangles[0], triangles[4]])))
assert num.allclose(domain.get_triangles([0, 4]),
[triangles[0], triangles[4]]), msg
def test_areas(self):
#Create basic mesh
points, vertices, boundary = rectangular(1, 3)
domain = General_mesh(points, vertices)
assert domain.get_area() == 1.0
def test_areas(self):
#Create basic mesh
points, vertices, boundary = rectangular(1, 3)
domain = General_mesh(points, vertices)
assert domain.get_area() == 1.0
