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import numpy as np
import meshplex
def test_circumcenters_line():
pts = [0.0, 1.0, 3.0, 4.0]
cells = [[0, 1], [1, 2], [2, 3]]
mesh = meshplex.Mesh(pts, cells)
print(mesh.cell_circumcenters)
ref = [0.5, 2.0, 3.5]
assert np.all(np.abs(mesh.cell_circumcenters - ref) < np.abs(ref) * 1.0e-13)
print(mesh.cell_circumradius)
ref = [0.5, 1.0, 0.5]
assert np.all(np.abs(mesh.cell_circumradius - ref) < np.abs(ref) * 1.0e-13)
def test_circumcenters_tri():
# two triangles in 5D
points = [
[0.0, 0.0, 0.0, 0.0, 0.0],
[1.0, 0.0, 0.0, 0.0, 0.0],
[1.0, 1.0, 0.0, 0.0, 0.0],
[0.0, 1.0, 0.0, 0.0, 0.0],
]
cells = [[0, 1, 2], [0, 3, 2]]
mesh = meshplex.Mesh(points, cells)
ref = [[0.5, 0.5, 0.0, 0.0, 0.0], [0.5, 0.5, 0.0, 0.0, 0.0]]
assert np.all(
np.abs(mesh.cell_circumcenters - ref) < np.abs(ref) * 1.0e-13 + 1.0e-13
)
print(mesh.cell_circumradius)
ref = [np.sqrt(2) / 2, np.sqrt(2) / 2]
assert np.all(np.abs(mesh.cell_circumradius - ref) < np.abs(ref) * 1.0e-13)
def test_circumcenters_tetra():
points = [
[0.0, 0.0, 0.0],
[1.0, 0.0, 0.0],
[0.0, 1.0, 0.0],
[0.0, 0.0, 1.0],
]
cells = [[0, 1, 2, 3]]
mesh = meshplex.Mesh(points, cells)
ref = [[0.5, 0.5, 0.5]]
print(mesh.cell_circumcenters)
assert np.all(np.abs(mesh.cell_circumcenters - ref) < np.abs(ref) * 1.0e-13)
print(mesh.cell_circumradius)
ref = [np.sqrt(3) / 2]
assert np.all(np.abs(mesh.cell_circumradius - ref) < np.abs(ref) * 1.0e-13)
def test_circumcenters_simplex5():
points = [
[0.0, 0.0, 0.0, 0.0],
[1.0, 0.0, 0.0, 0.0],
[0.0, 1.0, 0.0, 0.0],
[0.0, 0.0, 1.0, 0.0],
[0.0, 0.0, 0.0, 1.0],
]
cells = [[0, 1, 2, 3, 4]]
mesh = meshplex.Mesh(points, cells)
ref = [[0.5, 0.5, 0.5, 0.5]]
print(mesh.cell_circumcenters)
assert np.all(np.abs(mesh.cell_circumcenters - ref) < np.abs(ref) * 1.0e-13)
print(mesh.cell_circumradius)
ref = [1.0]
assert np.all(np.abs(mesh.cell_circumradius - ref) < np.abs(ref) * 1.0e-13)
if __name__ == "__main__":
# test_circumcenters_tri()
test_circumcenters_tetra()
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