| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | #TEST |
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| 4 | |
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| 5 | import unittest |
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| 6 | from Numeric import allclose |
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| 7 | |
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| 8 | from alpha_shape import * |
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| 9 | |
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| 10 | class TestCase(unittest.TestCase): |
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| 11 | |
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| 12 | def setUp(self): |
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| 13 | pass |
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| 14 | |
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| 15 | |
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| 16 | def tearDown(self): |
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| 17 | pass |
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| 18 | |
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| 19 | def test_delaunay(self): |
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| 20 | #print "test_delaunay" |
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| 21 | a = [0.0, 0.0] |
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| 22 | b = [1.0, 0.0] |
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| 23 | c = [2.0, 0.0] |
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| 24 | d = [2.0, 2.0] |
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| 25 | e = [1.0, 2.0] |
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| 26 | f = [0.0, 2.0] |
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| 27 | |
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| 28 | alpha = Alpha_Shape([a,b,c,d,e,f]) |
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| 29 | result = alpha.get_delaunay() |
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| 30 | answer = [(0, 1, 5), (5, 1, 4), (4, 2, 3), (2, 4, 1)] |
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| 31 | assert allclose(answer, result) |
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| 32 | |
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| 33 | def test_3_points_on_line(self): |
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| 34 | #print "test_delaunay" |
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| 35 | a = [0.0, 0.0] |
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| 36 | b = [1.0, 0.0] |
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| 37 | c = [2.0, 0.0] |
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| 38 | |
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| 39 | try: |
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| 40 | alpha = Alpha_Shape([a,b,c]) |
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| 41 | except PointError: |
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| 42 | pass |
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| 43 | else: |
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| 44 | self.failUnless(0==1, \ |
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| 45 | 'point list with 2 points did not raise an error!') |
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| 46 | |
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| 47 | |
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| 48 | |
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| 49 | def test_alpha_1(self): |
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| 50 | #print "test_alpha" |
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| 51 | a = [0.0, 0.0] |
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| 52 | b = [1.0, 0.0] |
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| 53 | c = [2.0, 0.0] |
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| 54 | d = [2.0, 2.0] |
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| 55 | e = [1.0, 2.0] |
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| 56 | f = [0.0, 2.0] |
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| 57 | |
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| 58 | alpha = Alpha_Shape([a,b,c,d,e,f]) |
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| 59 | result = alpha.get_boundary() |
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| 60 | #print "result",result |
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| 61 | answer = [(5, 0), (0, 1), (4, 5), (2, 3), (3, 4), (1, 2)] |
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| 62 | assert allclose(answer, result) |
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| 63 | |
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| 64 | |
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| 65 | def test_alpha_2(self): |
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| 66 | #print "test_alpha" |
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| 67 | a = [0.0, 0.0] |
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| 68 | b = [2.0, 0.0] |
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| 69 | c = [4.0, 0.0] |
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| 70 | cd = [3.0,2.0] |
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| 71 | d = [4.0, 4.0] |
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| 72 | e = [2.0, 4.0] |
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| 73 | f = [0.0, 4.0] |
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| 74 | |
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| 75 | alpha = Alpha_Shape([a,b,c,cd,d,e,f]) |
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| 76 | result = alpha.get_boundary() |
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| 77 | #print "result",result |
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| 78 | answer = [(0, 3), (3, 6), (0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6)] |
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| 79 | assert allclose(answer, result) |
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| 80 | |
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| 81 | |
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| 82 | def test_alpha_3(self): |
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| 83 | #print "test_alpha" |
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| 84 | a = [0.0, 0.0] |
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| 85 | b = [1.0, 0.0] |
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| 86 | c = [2.0, 0.0] |
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| 87 | d = [2.0, 2.0] |
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| 88 | e = [1.0, 2.0] |
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| 89 | f = [0.0, 2.0] |
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| 90 | alf = 1.5 |
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| 91 | |
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| 92 | alpha = Alpha_Shape([a,b,c,d,e,f],alf) |
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| 93 | result = alpha.get_boundary() |
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| 94 | #print "result",result |
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| 95 | answer = [(5, 0), (0, 1), (4, 5), (2, 3), (3, 4), (1, 2)] |
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| 96 | assert allclose(answer, result) |
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| 97 | |
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| 98 | |
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| 99 | |
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| 100 | def test_not_enough_points(self): |
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| 101 | #print "test_not_enought_points" |
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| 102 | a = [0.0, 0.0] |
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| 103 | b = [1.0, 0.0] |
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| 104 | |
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| 105 | try: |
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| 106 | alpha = Alpha_Shape([a,b]) |
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| 107 | except PointError: |
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| 108 | pass |
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| 109 | else: |
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| 110 | self.failUnless(0==1, |
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| 111 | 'point list with 2 points did not raise an error!') |
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| 112 | |
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| 113 | |
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| 114 | def test_alpha_stand_alone(self): |
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| 115 | #print "test_alpha_stand_alone" |
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| 116 | import os |
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| 117 | import tempfile |
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| 118 | |
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| 119 | fileName = tempfile.mktemp(".xya") |
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| 120 | #(h,fileName) = tempfile.mkstemp(".xya") |
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| 121 | file = open(fileName,"w") |
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| 122 | file.write("title row \n\ |
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| 123 | 0.0, 0.0\n\ |
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| 124 | 1.0, 0.0\n\ |
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| 125 | 2.0, 0.0\n\ |
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| 126 | 2.0, 2.0\n\ |
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| 127 | 1.0, 2.0\n\ |
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| 128 | 0.0, 2.0\n") |
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| 129 | file.close() |
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| 130 | |
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| 131 | output_file_name = tempfile.mktemp(".bnd") |
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| 132 | #(ho, output_file_name) = tempfile.mkstemp(".bnd") |
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| 133 | command = 'python alpha_shape.py ' + fileName + ' ' + output_file_name |
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| 134 | #print "command", command |
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| 135 | os.system(command) |
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| 136 | os.remove(fileName) |
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| 137 | |
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| 138 | file = open(output_file_name,"r") |
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| 139 | lFile = file.read().split('\n') |
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| 140 | file.close() |
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| 141 | os.remove(output_file_name) |
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| 142 | self.failUnless(lFile[1] == "5,0" and |
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| 143 | lFile[2] == "0,1" and |
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| 144 | lFile[3] == "4,5" and |
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| 145 | lFile[4] == "2,3" and |
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| 146 | lFile[5] == "3,4" and |
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| 147 | lFile[6] == "1,2" and |
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| 148 | lFile[7] == "" |
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| 149 | , |
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| 150 | 'boundary file is wrong') |
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| 151 | |
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| 152 | |
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| 153 | #------------------------------------------------------------- |
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| 154 | if __name__ == "__main__": |
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| 155 | #print "starting tests \n" |
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| 156 | suite = unittest.makeSuite(TestCase,'test') |
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| 157 | runner = unittest.TextTestRunner(verbosity=1) |
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| 158 | runner.run(suite) |
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| 159 | #print "finished tests \n" |
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| 160 | |
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| 161 | |
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| 166 | |
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