| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | #FIXME: Seperate the tests for mesh and general_mesh |
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| 4 | |
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| 5 | import unittest |
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| 6 | from math import sqrt |
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| 7 | |
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| 8 | from mesh import * |
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| 9 | from mesh_factory import rectangular |
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| 10 | from config import epsilon |
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| 11 | from Numeric import allclose, array |
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| 12 | |
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| 13 | def distance(x, y): |
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| 14 | return sqrt( sum( (array(x)-array(y))**2 )) |
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| 15 | |
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| 16 | class TestCase(unittest.TestCase): |
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| 17 | def setUp(self): |
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| 18 | pass |
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| 19 | |
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| 20 | def tearDown(self): |
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| 21 | pass |
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| 22 | |
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| 23 | def test_triangle_inputs(self): |
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| 24 | points = [[0.0, 0.0], [4.0, 0.0], [0.0, 3.0]] |
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| 25 | vertices = [0,1,2] #Wrong |
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| 26 | |
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| 27 | try: |
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| 28 | mesh = Mesh(points, vertices) |
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| 29 | except: |
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| 30 | pass |
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| 31 | else: |
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| 32 | msg = 'Should have raised exception' |
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| 33 | raise msg |
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| 34 | |
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| 35 | |
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| 36 | def test_basic_triangle(self): |
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| 37 | |
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| 38 | a = [0.0, 0.0] |
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| 39 | b = [4.0, 0.0] |
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| 40 | c = [0.0, 3.0] |
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| 41 | |
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| 42 | points = [a, b, c] |
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| 43 | vertices = [[0,1,2]] |
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| 44 | mesh = Mesh(points, vertices) |
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| 45 | |
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| 46 | #Centroid |
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| 47 | centroid = mesh.centroid_coordinates[0] |
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| 48 | assert centroid[0] == 4.0/3 |
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| 49 | assert centroid[1] == 1.0 |
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| 50 | |
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| 51 | #Area |
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| 52 | assert mesh.areas[0] == 6.0,\ |
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| 53 | 'Area was %f, should have been 6.0' %mesh.areas[0] |
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| 54 | |
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| 55 | #Normals |
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| 56 | normals = mesh.get_normals() |
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| 57 | assert allclose(normals[0, 0:2], [3.0/5, 4.0/5]) |
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| 58 | assert allclose(normals[0, 2:4], [-1.0, 0.0]) |
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| 59 | assert allclose(normals[0, 4:6], [0.0, -1.0]) |
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| 60 | |
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| 61 | assert allclose(mesh.get_normal(0,0), [3.0/5, 4.0/5]) |
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| 62 | assert allclose(mesh.get_normal(0,1), [-1.0, 0.0]) |
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| 63 | assert allclose(mesh.get_normal(0,2), [0.0, -1.0]) |
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| 64 | |
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| 65 | #Edge lengths |
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| 66 | assert allclose(mesh.edgelengths[0], [5.0, 3.0, 4.0]) |
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| 67 | |
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| 68 | |
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| 69 | #Vertex coordinates |
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| 70 | V = mesh.get_vertex_coordinates() |
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| 71 | assert allclose(V[0], [0.0, 0.0, 4.0, 0.0, 0.0, 3.0]) |
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| 72 | |
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| 73 | V0 = mesh.get_vertex_coordinate(0, 0) |
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| 74 | assert allclose(V0, [0.0, 0.0]) |
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| 75 | |
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| 76 | V1 = mesh.get_vertex_coordinate(0, 1) |
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| 77 | assert allclose(V1, [4.0, 0.0]) |
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| 78 | |
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| 79 | V2 = mesh.get_vertex_coordinate(0, 2) |
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| 80 | assert allclose(V2, [0.0, 3.0]) |
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| 81 | |
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| 82 | |
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| 83 | #General tests: |
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| 84 | |
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| 85 | #Test that points are arranged in a counter clock wise order etc |
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| 86 | mesh.check_integrity() |
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| 87 | |
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| 88 | |
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| 89 | #Test that the centroid is located 2/3 of the way |
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| 90 | #from each vertex to the midpoint of the opposite side |
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| 91 | |
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| 92 | V = mesh.get_vertex_coordinates() |
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| 93 | |
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| 94 | x0 = V[0,0] |
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| 95 | y0 = V[0,1] |
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| 96 | x1 = V[0,2] |
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| 97 | y1 = V[0,3] |
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| 98 | x2 = V[0,4] |
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| 99 | y2 = V[0,5] |
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| 100 | |
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| 101 | m0 = [(x1 + x2)/2, (y1 + y2)/2] |
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| 102 | m1 = [(x0 + x2)/2, (y0 + y2)/2] |
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| 103 | m2 = [(x1 + x0)/2, (y1 + y0)/2] |
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| 104 | |
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| 105 | d0 = distance(centroid, [x0, y0]) |
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| 106 | d1 = distance(m0, [x0, y0]) |
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| 107 | assert d0 == 2*d1/3 |
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| 108 | # |
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| 109 | d0 = distance(centroid, [x1, y1]) |
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| 110 | d1 = distance(m1, [x1, y1]) |
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| 111 | assert abs(d0 - 2*d1/3) < epsilon, '%e, %e' %(d0, 2*d1/3) |
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| 112 | |
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| 113 | d0 = distance(centroid, [x2, y2]) |
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| 114 | d1 = distance(m2, [x2, y2]) |
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| 115 | assert abs(d0 - 2*d1/3) < epsilon, '%e, %e' %(d0, 2*d1/3) |
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| 116 | |
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| 117 | #Radius |
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| 118 | d0 = distance(centroid, m0) |
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| 119 | assert d0 == 5.0/6 |
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| 120 | |
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| 121 | d1 = distance(centroid, m1) |
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| 122 | assert d1 == sqrt(73.0/36) |
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| 123 | |
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| 124 | d2 = distance(centroid, m2) |
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| 125 | assert d2 == sqrt(13.0/9) |
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| 126 | |
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| 127 | assert mesh.radii[0] == min(d0, d1, d2) |
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| 128 | assert mesh.radii[0] == 5.0/6 |
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| 129 | |
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| 130 | |
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| 131 | #Let x be the centroid of triangle abc. |
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| 132 | #Test that areas of the three triangles axc, cxb, and bxa are equal. |
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| 133 | points = [a, b, c, centroid] |
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| 134 | vertices = [[0,3,2], [2,3,1], [1,3,0]] |
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| 135 | new_mesh = Mesh(points, vertices) |
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| 136 | |
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| 137 | assert new_mesh.areas[0] == new_mesh.areas[1] |
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| 138 | assert new_mesh.areas[1] == new_mesh.areas[2] |
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| 139 | assert new_mesh.areas[1] == new_mesh.areas[2] |
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| 140 | |
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| 141 | assert new_mesh.areas[1] == mesh.areas[0]/3 |
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| 142 | |
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| 143 | |
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| 144 | |
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| 145 | def test_general_triangle(self): |
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| 146 | a = [2.0, 1.0] |
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| 147 | b = [6.0, 2.0] |
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| 148 | c = [1.0, 3.0] |
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| 149 | |
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| 150 | points = [a, b, c] |
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| 151 | vertices = [[0,1,2]] |
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| 152 | |
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| 153 | mesh = Mesh(points, vertices) |
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| 154 | centroid = mesh.centroid_coordinates[0] |
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| 155 | |
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| 156 | |
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| 157 | #Test that the centroid is located 2/3 of the way |
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| 158 | #from each vertex to the midpoint of the opposite side |
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| 159 | |
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| 160 | V = mesh.get_vertex_coordinates() |
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| 161 | |
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| 162 | x0 = V[0,0] |
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| 163 | y0 = V[0,1] |
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| 164 | x1 = V[0,2] |
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| 165 | y1 = V[0,3] |
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| 166 | x2 = V[0,4] |
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| 167 | y2 = V[0,5] |
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| 168 | |
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| 169 | m0 = [(x1 + x2)/2, (y1 + y2)/2] |
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| 170 | m1 = [(x0 + x2)/2, (y0 + y2)/2] |
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| 171 | m2 = [(x1 + x0)/2, (y1 + y0)/2] |
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| 172 | |
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| 173 | d0 = distance(centroid, [x0, y0]) |
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| 174 | d1 = distance(m0, [x0, y0]) |
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| 175 | assert abs(d0 - 2*d1/3) < epsilon, '%e, %e' %(d0, 2*d1/3) |
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| 176 | # |
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| 177 | d0 = distance(centroid, [x1, y1]) |
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| 178 | d1 = distance(m1, [x1, y1]) |
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| 179 | assert abs(d0 - 2*d1/3) < epsilon, '%e, %e' %(d0, 2*d1/3) |
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| 180 | |
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| 181 | d0 = distance(centroid, [x2, y2]) |
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| 182 | d1 = distance(m2, [x2, y2]) |
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| 183 | assert abs(d0 - 2*d1/3) < epsilon, '%e, %e' %(d0, 2*d1/3) |
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| 184 | |
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| 185 | #Radius |
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| 186 | d0 = distance(centroid, m0) |
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| 187 | d1 = distance(centroid, m1) |
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| 188 | d2 = distance(centroid, m2) |
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| 189 | assert mesh.radii[0] == min(d0, d1, d2) |
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| 190 | |
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| 191 | |
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| 192 | |
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| 193 | #Let x be the centroid of triangle abc. |
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| 194 | #Test that areas of the three triangles axc, cxb, and bxa are equal. |
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| 195 | |
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| 196 | points = [a, b, c, centroid] |
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| 197 | vertices = [[0,3,2], [2,3,1], [1,3,0]] |
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| 198 | new_mesh = Mesh(points, vertices) |
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| 199 | |
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| 200 | assert new_mesh.areas[0] == new_mesh.areas[1] |
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| 201 | assert new_mesh.areas[1] == new_mesh.areas[2] |
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| 202 | assert new_mesh.areas[1] == new_mesh.areas[2] |
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| 203 | |
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| 204 | assert new_mesh.areas[1] == mesh.areas[0]/3 |
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| 205 | |
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| 206 | |
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| 207 | #Test that points are arranged in a counter clock wise order |
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| 208 | mesh.check_integrity() |
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| 209 | |
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| 210 | |
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| 211 | def test_boundary_indices(self): |
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| 212 | a = [0.0, 0.5] |
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| 213 | b = [0.0, 0.0] |
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| 214 | c = [0.5, 0.5] |
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| 215 | |
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| 216 | points = [a, b, c] |
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| 217 | vertices = [ [0,1,2] ] |
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| 218 | mesh = Mesh(points, vertices) |
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| 219 | mesh.check_integrity() |
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| 220 | |
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| 221 | assert allclose(mesh.neighbours, [[-1,-2,-3]]) |
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| 222 | |
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| 223 | |
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| 224 | |
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| 225 | def test_two_triangles(self): |
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| 226 | a = [0.0, 0.0] |
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| 227 | b = [0.0, 2.0] |
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| 228 | c = [2.0,0.0] |
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| 229 | e = [2.0, 2.0] |
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| 230 | points = [a, b, c, e] |
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| 231 | vertices = [ [1,0,2], [1,2,3] ] #bac, bce |
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| 232 | mesh = Mesh(points, vertices) |
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| 233 | |
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| 234 | assert mesh.areas[0] == 2.0 |
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| 235 | |
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| 236 | assert allclose(mesh.centroid_coordinates[0], [2.0/3, 2.0/3]) |
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| 237 | |
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| 238 | |
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| 239 | #Test that points are arranged in a counter clock wise order |
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| 240 | mesh.check_integrity() |
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| 241 | |
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| 242 | |
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| 243 | |
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| 244 | def test_more_triangles(self): |
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| 245 | |
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| 246 | a = [0.0, 0.0] |
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| 247 | b = [0.0, 2.0] |
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| 248 | c = [2.0, 0.0] |
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| 249 | d = [0.0, 4.0] |
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| 250 | e = [2.0, 2.0] |
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| 251 | f = [4.0, 0.0] |
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| 252 | |
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| 253 | points = [a, b, c, d, e, f] |
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| 254 | #bac, bce, ecf, dbe, daf, dae |
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| 255 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4], [3,0,5], [3,0,4]] |
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| 256 | mesh = Mesh(points, vertices) |
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| 257 | |
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| 258 | #Test that points are arranged in a counter clock wise order |
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| 259 | mesh.check_integrity() |
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| 260 | |
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| 261 | assert mesh.areas[0] == 2.0 |
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| 262 | assert mesh.areas[1] == 2.0 |
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| 263 | assert mesh.areas[2] == 2.0 |
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| 264 | assert mesh.areas[3] == 2.0 |
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| 265 | assert mesh.areas[4] == 8.0 |
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| 266 | assert mesh.areas[5] == 4.0 |
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| 267 | |
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| 268 | assert mesh.edgelengths[1,0] == 2.0 |
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| 269 | assert mesh.edgelengths[1,1] == 2.0 |
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| 270 | assert mesh.edgelengths[1,2] == sqrt(8.0) |
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| 271 | |
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| 272 | assert allclose(mesh.centroid_coordinates[0], [2.0/3, 2.0/3]) |
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| 273 | assert allclose(mesh.centroid_coordinates[1], [4.0/3, 4.0/3]) |
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| 274 | assert allclose(mesh.centroid_coordinates[2], [8.0/3, 2.0/3]) |
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| 275 | assert allclose(mesh.centroid_coordinates[3], [2.0/3, 8.0/3]) |
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| 276 | |
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| 277 | |
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| 278 | def test_mesh_and_neighbours(self): |
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| 279 | a = [0.0, 0.0] |
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| 280 | b = [0.0, 2.0] |
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| 281 | c = [2.0,0.0] |
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| 282 | d = [0.0, 4.0] |
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| 283 | e = [2.0, 2.0] |
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| 284 | f = [4.0,0.0] |
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| 285 | |
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| 286 | |
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| 287 | points = [a, b, c, d, e, f] |
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| 288 | |
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| 289 | #bac, bce, ecf, dbe |
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| 290 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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| 291 | mesh = Mesh(points, vertices) |
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| 292 | |
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| 293 | mesh.check_integrity() |
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| 294 | |
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| 295 | |
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| 296 | T = mesh |
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| 297 | tid = 0 |
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| 298 | assert T.number_of_boundaries[tid] == 2 |
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| 299 | assert T.neighbours[tid, 0] < 0 #Opposite point b (0,2) |
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| 300 | assert T.neighbours[tid, 1] == 1 #Opposite point a (0,0) |
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| 301 | assert T.neighbours[tid, 2] < 0 #Opposite point c (2,0) |
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| 302 | |
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| 303 | tid = 1 |
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| 304 | assert T.number_of_boundaries[tid] == 0 |
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| 305 | assert T.neighbours[tid, 0] == 2 #Opposite point b (0,2) |
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| 306 | assert T.neighbours[tid, 1] == 3 #Opposite point c (2,0) |
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| 307 | assert T.neighbours[tid, 2] == 0 #Opposite point e (2,2) |
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| 308 | |
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| 309 | tid = 2 |
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| 310 | assert T.number_of_boundaries[tid] == 2 |
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| 311 | assert T.neighbours[tid, 0] < 0 #Opposite point e (2,2) |
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| 312 | assert T.neighbours[tid, 1] < 0 #Opposite point c (2,0) |
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| 313 | assert T.neighbours[tid, 2] == 1 #Opposite point f (4,0) |
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| 314 | |
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| 315 | tid = 3 |
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| 316 | assert T.number_of_boundaries[tid] == 2 |
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| 317 | assert T.neighbours[tid, 0] == 1 #Opposite point d (0,4) |
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| 318 | assert T.neighbours[tid, 1] < 0 #Opposite point b (0,3) |
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| 319 | assert T.neighbours[tid, 2] < 0 #Opposite point e (2,2) |
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| 320 | |
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| 321 | #Neighbouring edges |
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| 322 | tid = 0 |
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| 323 | assert T.neighbour_edges[tid, 0] < 0 #Opposite point b (0,2) |
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| 324 | assert T.neighbour_edges[tid, 1] == 2 #Opposite point a (0,0) |
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| 325 | assert T.neighbour_edges[tid, 2] < 0 #Opposite point c (2,0) |
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| 326 | |
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| 327 | tid = 1 |
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| 328 | assert T.neighbour_edges[tid, 0] == 2 #Opposite point b (0,2) |
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| 329 | assert T.neighbour_edges[tid, 1] == 0 #Opposite point c (2,0) |
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| 330 | assert T.neighbour_edges[tid, 2] == 1 #Opposite point e (2,2) |
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| 331 | |
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| 332 | tid = 2 |
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| 333 | assert T.neighbour_edges[tid, 0] < 0 #Opposite point e (2,2) |
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| 334 | assert T.neighbour_edges[tid, 1] < 0 #Opposite point c (2,0) |
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| 335 | assert T.neighbour_edges[tid, 2] == 0 #Opposite point f (4,0) |
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| 336 | |
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| 337 | tid = 3 |
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| 338 | assert T.neighbour_edges[tid, 0] == 1 #Opposite point d (0,4) |
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| 339 | assert T.neighbour_edges[tid, 1] < 0 #Opposite point b (0,3) |
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| 340 | assert T.neighbour_edges[tid, 2] < 0 #Opposite point e (2,2) |
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| 341 | |
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| 342 | |
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| 343 | def test_rectangular_mesh_basic(self): |
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| 344 | M=1 |
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| 345 | N=1 |
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| 346 | |
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| 347 | points, vertices, boundary = rectangular(M, N) |
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| 348 | mesh = Mesh(points, vertices, boundary) |
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| 349 | |
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| 350 | #Test that points are arranged in a counter clock wise order |
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| 351 | mesh.check_integrity() |
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| 352 | |
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| 353 | M=2 |
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| 354 | N=2 |
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| 355 | points, vertices, boundary = rectangular(M, N) |
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| 356 | mesh = Mesh(points, vertices, boundary) |
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| 357 | |
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| 358 | #Test that points are arranged in a counter clock wise order |
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| 359 | mesh.check_integrity() |
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| 360 | |
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| 361 | #assert mesh.boundary[(7,1)] == 2 # top |
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| 362 | assert mesh.boundary[(7,1)] == 'top' # top |
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| 363 | assert mesh.boundary[(3,1)] == 'top' # top |
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| 364 | |
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| 365 | |
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| 366 | def test_boundary_tags(self): |
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| 367 | |
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| 368 | |
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| 369 | points, vertices, boundary = rectangular(4, 4) |
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| 370 | mesh = Mesh(points, vertices, boundary) |
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| 371 | |
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| 372 | |
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| 373 | #Test that points are arranged in a counter clock wise order |
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| 374 | mesh.check_integrity() |
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| 375 | |
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| 376 | #print mesh.get_boundary_tags() |
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| 377 | #print mesh.boundary |
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| 378 | |
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| 379 | for k in [1, 3, 5, 7]: |
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| 380 | assert mesh.boundary[(k,2)] == 'left' |
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| 381 | |
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| 382 | for k in [24, 26, 28, 30]: |
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| 383 | assert mesh.boundary[(k,2)] == 'right' |
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| 384 | |
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| 385 | for k in [7, 15, 23, 31]: |
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| 386 | assert mesh.boundary[(k,1)] == 'top' |
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| 387 | for k in [0, 8, 16, 24]: |
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| 388 | assert mesh.boundary[(k,1)] == 'bottom' |
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| 389 | |
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| 390 | |
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| 391 | |
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| 392 | def test_rectangular_mesh(self): |
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| 393 | M=4 |
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| 394 | N=16 |
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| 395 | len1 = 100.0 |
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| 396 | len2 = 17.0 |
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| 397 | |
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| 398 | points, vertices, boundary = rectangular(M, N, len1, len2) |
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| 399 | mesh = Mesh(points, vertices, boundary) |
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| 400 | |
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| 401 | assert len(mesh) == 2*M*N |
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| 402 | |
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| 403 | for i in range(len(mesh)): |
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| 404 | assert mesh.areas[i] == len1*len2/(2*M*N) |
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| 405 | |
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| 406 | hypo = sqrt((len1/M)**2 + (len2/N)**2) #hypothenuse |
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| 407 | assert mesh.edgelengths[i, 0] == hypo |
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| 408 | assert mesh.edgelengths[i, 1] == len1/M #x direction |
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| 409 | assert mesh.edgelengths[i, 2] == len2/N #y direction |
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| 410 | |
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| 411 | #Test that points are arranged in a counter clock wise order |
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| 412 | mesh.check_integrity() |
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| 413 | |
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| 414 | |
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| 415 | def test_rectangular_mesh2(self): |
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| 416 | #Check that integers don't cause trouble |
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| 417 | N = 16 |
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| 418 | |
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| 419 | points, vertices, boundary = rectangular(2*N, N, len1=10, len2=10) |
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| 420 | mesh = Mesh(points, vertices, boundary) |
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| 421 | |
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| 422 | |
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| 423 | |
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| 424 | def test_surrogate_neighbours(self): |
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| 425 | a = [0.0, 0.0] |
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| 426 | b = [0.0, 2.0] |
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| 427 | c = [2.0,0.0] |
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| 428 | d = [0.0, 4.0] |
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| 429 | e = [2.0, 2.0] |
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| 430 | f = [4.0,0.0] |
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| 431 | |
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| 432 | points = [a, b, c, d, e, f] |
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| 433 | |
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| 434 | #bac, bce, ecf, dbe |
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| 435 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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| 436 | mesh = Mesh(points, vertices) |
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| 437 | mesh.check_integrity() |
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| 438 | |
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| 439 | |
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| 440 | T = mesh |
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| 441 | tid = 0 |
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| 442 | assert T.number_of_boundaries[tid] == 2 |
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| 443 | assert T.surrogate_neighbours[tid, 0] == tid |
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| 444 | assert T.surrogate_neighbours[tid, 1] == 1 |
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| 445 | assert T.surrogate_neighbours[tid, 2] == tid |
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| 446 | |
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| 447 | tid = 1 |
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| 448 | assert T.number_of_boundaries[tid] == 0 |
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| 449 | assert T.surrogate_neighbours[tid, 0] == 2 |
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| 450 | assert T.surrogate_neighbours[tid, 1] == 3 |
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| 451 | assert T.surrogate_neighbours[tid, 2] == 0 |
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| 452 | |
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| 453 | tid = 2 |
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| 454 | assert T.number_of_boundaries[tid] == 2 |
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| 455 | assert T.surrogate_neighbours[tid, 0] == tid |
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| 456 | assert T.surrogate_neighbours[tid, 1] == tid |
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| 457 | assert T.surrogate_neighbours[tid, 2] == 1 |
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| 458 | |
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| 459 | tid = 3 |
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| 460 | assert T.number_of_boundaries[tid] == 2 |
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| 461 | assert T.surrogate_neighbours[tid, 0] == 1 |
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| 462 | assert T.surrogate_neighbours[tid, 1] == tid |
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| 463 | assert T.surrogate_neighbours[tid, 2] == tid |
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| 464 | |
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| 465 | |
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| 466 | def test_boundary_inputs(self): |
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| 467 | a = [0.0, 0.0] |
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| 468 | b = [0.0, 2.0] |
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| 469 | c = [2.0,0.0] |
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| 470 | d = [0.0, 4.0] |
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| 471 | e = [2.0, 2.0] |
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| 472 | f = [4.0,0.0] |
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| 473 | |
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| 474 | points = [a, b, c, d, e, f] |
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| 475 | |
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| 476 | #bac, bce, ecf, dbe |
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| 477 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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| 478 | |
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| 479 | boundary = { (0, 0): 'First', |
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| 480 | (0, 2): 'Second', |
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| 481 | (2, 0): 'Third', |
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| 482 | (2, 1): 'Fourth', |
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| 483 | (3, 1): 'Fifth', |
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| 484 | (3, 2): 'Sixth'} |
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| 485 | |
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| 486 | |
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| 487 | mesh = Mesh(points, vertices, boundary) |
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| 488 | mesh.check_integrity() |
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| 489 | |
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| 490 | |
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| 491 | #Check enumeration |
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| 492 | for k, (vol_id, edge_id) in enumerate(mesh.boundary_segments): |
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| 493 | b = -k-1 |
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| 494 | assert mesh.neighbours[vol_id, edge_id] == b |
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| 495 | |
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| 496 | |
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| 497 | |
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| 498 | def test_boundary_inputs_using_one_default(self): |
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| 499 | a = [0.0, 0.0] |
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| 500 | b = [0.0, 2.0] |
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| 501 | c = [2.0,0.0] |
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| 502 | d = [0.0, 4.0] |
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| 503 | e = [2.0, 2.0] |
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| 504 | f = [4.0,0.0] |
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| 505 | |
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| 506 | points = [a, b, c, d, e, f] |
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| 507 | |
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| 508 | #bac, bce, ecf, dbe |
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| 509 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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| 510 | |
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| 511 | boundary = { (0, 0): 'First', |
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| 512 | (0, 2): 'Second', |
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| 513 | (2, 0): 'Third', |
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| 514 | (2, 1): 'Fourth', |
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| 515 | #(3, 1): 'Fifth', #Skip this |
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| 516 | (3, 2): 'Sixth'} |
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| 517 | |
|---|
| 518 | |
|---|
| 519 | mesh = Mesh(points, vertices, boundary) |
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| 520 | mesh.check_integrity() |
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| 521 | |
|---|
| 522 | from config import default_boundary_tag |
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| 523 | assert mesh.boundary[ (3, 1) ] == default_boundary_tag |
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| 524 | |
|---|
| 525 | |
|---|
| 526 | #Check enumeration |
|---|
| 527 | for k, (vol_id, edge_id) in enumerate(mesh.boundary_segments): |
|---|
| 528 | b = -k-1 |
|---|
| 529 | assert mesh.neighbours[vol_id, edge_id] == b |
|---|
| 530 | |
|---|
| 531 | def test_boundary_inputs_using_all_defaults(self): |
|---|
| 532 | a = [0.0, 0.0] |
|---|
| 533 | b = [0.0, 2.0] |
|---|
| 534 | c = [2.0,0.0] |
|---|
| 535 | d = [0.0, 4.0] |
|---|
| 536 | e = [2.0, 2.0] |
|---|
| 537 | f = [4.0,0.0] |
|---|
| 538 | |
|---|
| 539 | points = [a, b, c, d, e, f] |
|---|
| 540 | |
|---|
| 541 | #bac, bce, ecf, dbe |
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| 542 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
|---|
| 543 | |
|---|
| 544 | boundary = { (0, 0): 'First', |
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| 545 | (0, 2): 'Second', |
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| 546 | (2, 0): 'Third', |
|---|
| 547 | (2, 1): 'Fourth', |
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| 548 | #(3, 1): 'Fifth', #Skip this |
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| 549 | (3, 2): 'Sixth'} |
|---|
| 550 | |
|---|
| 551 | |
|---|
| 552 | mesh = Mesh(points, vertices) #, boundary) |
|---|
| 553 | mesh.check_integrity() |
|---|
| 554 | |
|---|
| 555 | from config import default_boundary_tag |
|---|
| 556 | assert mesh.boundary[ (0, 0) ] == default_boundary_tag |
|---|
| 557 | assert mesh.boundary[ (0, 2) ] == default_boundary_tag |
|---|
| 558 | assert mesh.boundary[ (2, 0) ] == default_boundary_tag |
|---|
| 559 | assert mesh.boundary[ (2, 1) ] == default_boundary_tag |
|---|
| 560 | assert mesh.boundary[ (3, 1) ] == default_boundary_tag |
|---|
| 561 | assert mesh.boundary[ (3, 2) ] == default_boundary_tag |
|---|
| 562 | |
|---|
| 563 | |
|---|
| 564 | #Check enumeration |
|---|
| 565 | for k, (vol_id, edge_id) in enumerate(mesh.boundary_segments): |
|---|
| 566 | b = -k-1 |
|---|
| 567 | assert mesh.neighbours[vol_id, edge_id] == b |
|---|
| 568 | |
|---|
| 569 | |
|---|
| 570 | |
|---|
| 571 | |
|---|
| 572 | |
|---|
| 573 | |
|---|
| 574 | def test_inputs(self): |
|---|
| 575 | a = [0.0, 0.0] |
|---|
| 576 | b = [0.0, 2.0] |
|---|
| 577 | c = [2.0,0.0] |
|---|
| 578 | d = [0.0, 4.0] |
|---|
| 579 | e = [2.0, 2.0] |
|---|
| 580 | f = [4.0,0.0] |
|---|
| 581 | |
|---|
| 582 | points = [a, b, c, d, e, f] |
|---|
| 583 | |
|---|
| 584 | #bac, bce, ecf, dbe |
|---|
| 585 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
|---|
| 586 | |
|---|
| 587 | #Too few points |
|---|
| 588 | try: |
|---|
| 589 | mesh = Mesh([points[0]], vertices) |
|---|
| 590 | except AssertionError: |
|---|
| 591 | pass |
|---|
| 592 | else: |
|---|
| 593 | raise 'Should have raised an exception' |
|---|
| 594 | |
|---|
| 595 | #Too few points - 1 element |
|---|
| 596 | try: |
|---|
| 597 | mesh = Mesh([points[0]], [vertices[0]]) |
|---|
| 598 | except AssertionError: |
|---|
| 599 | pass |
|---|
| 600 | else: |
|---|
| 601 | raise 'Should have raised an exception' |
|---|
| 602 | |
|---|
| 603 | #Wrong dimension of vertices |
|---|
| 604 | try: |
|---|
| 605 | mesh = Mesh(points, vertices[0]) |
|---|
| 606 | except AssertionError: |
|---|
| 607 | pass |
|---|
| 608 | else: |
|---|
| 609 | raise 'Should have raised an exception' |
|---|
| 610 | |
|---|
| 611 | #Unsubscriptable coordinates object raises exception |
|---|
| 612 | try: |
|---|
| 613 | mesh = Mesh(points[0], [vertices[0]]) |
|---|
| 614 | except AssertionError: |
|---|
| 615 | pass |
|---|
| 616 | else: |
|---|
| 617 | raise 'Should have raised an exception' |
|---|
| 618 | |
|---|
| 619 | #FIXME: This has been commented out pending a decision |
|---|
| 620 | #whether to allow partial boundary tags or not |
|---|
| 621 | # |
|---|
| 622 | #Not specifying all boundary tags |
|---|
| 623 | #try: |
|---|
| 624 | # mesh = Mesh(points, vertices, {(3,0): 'x'}) |
|---|
| 625 | #except AssertionError: |
|---|
| 626 | # pass |
|---|
| 627 | #else: |
|---|
| 628 | # raise 'Should have raised an exception' |
|---|
| 629 | |
|---|
| 630 | #Specifying wrong non existing segment |
|---|
| 631 | try: |
|---|
| 632 | mesh = Mesh(points, vertices, {(5,0): 'x'}) |
|---|
| 633 | except AssertionError: |
|---|
| 634 | pass |
|---|
| 635 | else: |
|---|
| 636 | raise 'Should have raised an exception' |
|---|
| 637 | |
|---|
| 638 | |
|---|
| 639 | |
|---|
| 640 | |
|---|
| 641 | def test_internal_boundaries(self): |
|---|
| 642 | """ |
|---|
| 643 | get values based on triangle lists. |
|---|
| 644 | """ |
|---|
| 645 | from mesh_factory import rectangular |
|---|
| 646 | from shallow_water import Domain |
|---|
| 647 | from Numeric import zeros, Float |
|---|
| 648 | |
|---|
| 649 | #Create basic mesh |
|---|
| 650 | points, vertices, boundary = rectangular(1, 3) |
|---|
| 651 | |
|---|
| 652 | # Add an internal boundary |
|---|
| 653 | boundary[(2,0)] = 'internal' |
|---|
| 654 | boundary[(1,0)] = 'internal' |
|---|
| 655 | |
|---|
| 656 | #Create shallow water domain |
|---|
| 657 | domain = Domain(points, vertices, boundary) |
|---|
| 658 | domain.build_tagged_elements_dictionary({'bottom':[0,1], |
|---|
| 659 | 'top':[4,5], |
|---|
| 660 | 'all':[0,1,2,3,4,5]}) |
|---|
| 661 | |
|---|
| 662 | |
|---|
| 663 | |
|---|
| 664 | |
|---|
| 665 | #------------------------------------------------------------- |
|---|
| 666 | if __name__ == "__main__": |
|---|
| 667 | suite = unittest.makeSuite(TestCase,'test') |
|---|
| 668 | runner = unittest.TextTestRunner() |
|---|
| 669 | runner.run(suite) |
|---|
| 670 | |
|---|
| 671 | |
|---|
| 672 | |
|---|
| 673 | |
|---|
| 674 | |
|---|
| 675 | |
|---|
