93891b917b
- added __neg__
- added cross for Vertex * Vertex
- added tests for these
- moved the cube docstring up into the cube generating function
66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
import unittest
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from surf.geometry import Vertex, cross
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class TestVertexOperations(unittest.TestCase):
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def setUp(self):
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self.origin = Vertex(0, 0, 0)
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self.v1 = Vertex(-1, -1, -1)
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self.v2 = Vertex(1, 1, 1)
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self.v3 = Vertex(5, 4, 3)
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self.v4 = Vertex(10, -2, 13)
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self.v5 = Vertex(-4, 15.3, 100)
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def test_addition(self):
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added_v = self.v1 + self.v2
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self.assertEqual(added_v, self.origin)
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self.assertEqual(self.v3 + self.v4, Vertex(15, 2, 16))
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def test_summation(self):
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v = sum((self.v1, self.v2, self.v3, self.v4), Vertex())
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self.assertEqual(v, Vertex(15, 2, 16))
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v = sum((self.v1, self.v2, self.v3, self.v4, self.v5), Vertex())
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self.assertEqual(v, Vertex(11, 17.3, 116))
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def test_division(self):
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v1 = self.v1 / 2
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v2 = self.v1 / 2.0
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self.assertEqual(v1, v2)
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def test_multiply(self):
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self.assertEqual(type(self.v1 * 2), Vertex)
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self.assertEqual(type(self.v1 * self.v1), Vertex)
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self.assertEqual(self.v1 * 2, Vertex(-2, -2, -2))
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self.assertEqual(self.v1 * self.v1, Vertex(0, 0, 0))
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self.assertEqual(self.v1 * self.v2, Vertex(0, 0, 0))
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self.assertEqual(self.v3 * self.v4, Vertex(58, -35, -50))
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def test_cross(self):
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i = Vertex(1, 0, 0)
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j = Vertex(0, 1, 0)
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k = Vertex(0, 0, 1)
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self.assertEqual(i * j, k)
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self.assertEqual(j * k, i)
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self.assertEqual(k * i, j)
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self.assertEqual(j * i, -k)
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self.assertEqual(k * j, -i)
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self.assertEqual(i * k, -j)
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self.assertEqual(i * i, self.origin)
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self.assertEqual(j * j, self.origin)
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self.assertEqual(k * k, self.origin)
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def test_negative(self):
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self.assertEqual(-self.v1, self.v2)
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self.assertEqual(-self.v2, self.v1)
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if __name__ == '__main__':
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unittest.main(verbosity=3)
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