test/unit/test_box.py

   1 import sys
   2 if sys.path[0] != "../..":
   3     sys.path.insert(0, "../..")
   4
   5 import unittest
   6
   7 import math
   8 from pyx import *
   9
  10 class BoxTestCase(unittest.TestCase):
  11
  12     def testDistance(self):
  13         b1 = box.polygon(center=(0.5, math.sqrt(3)/6), corners=((0, 0), (1, 0), (0.5, math.sqrt(3)/2)))
  14         b2 = box.polygon(center=(0.5, math.sqrt(3)/6), corners=((0, 0), (1, 0), (0.5, math.sqrt(3)/2)))
  15         b2.transform(trafo.translate(3, 0))
  16         b3 = box.polygon(center=(0.5, math.sqrt(3)/6), corners=((0, 0), (1, 0), (0.5, math.sqrt(3)/2)))
  17         b3.transform(trafo.translate(3, 3 * math.tan(math.pi/6)))
  18         b4 = box.polygon(center=(0.5, math.sqrt(3)/6), corners=((0, 0), (1, 0), (0.5, math.sqrt(3)/2)))
  19         b4.transform(trafo.translate(0, 3))
  20         b5 = box.polygon(center=(0.5, math.sqrt(3)/6), corners=((0, 0), (1, 0), (0.5, math.sqrt(3)/2)))
  21         b5.transform(trafo.translate(0.5, 0.5))
  22         self.assertAlmostEqual(unit.topt(b1.boxdistance(b2)), unit.topt(2))
  23         self.assertAlmostEqual(unit.topt(b1.boxdistance(b3)), unit.topt(math.sqrt(9*(1 + math.tan(math.pi/6)**2)) - math.sqrt(3)/2))
  24         self.assertAlmostEqual(unit.topt(b1.boxdistance(b4)), unit.topt(3 - math.sqrt(3)/2))
  25         self.assertAlmostEqual(unit.topt(b2.boxdistance(b1)), unit.topt(2))
  26         self.assertAlmostEqual(unit.topt(b3.boxdistance(b1)), unit.topt(math.sqrt(9*(1 + math.tan(math.pi/6)**2)) - math.sqrt(3)/2))
  27         self.assertAlmostEqual(unit.topt(b4.boxdistance(b1)), unit.topt(3 - math.sqrt(3)/2))
  28         self.assertRaises(box.BoxCrossError, b1.boxdistance, b5)
  29         self.assertRaises(box.BoxCrossError, b5.boxdistance, b1)
  30
  31
  32 if __name__ == "__main__":
  33     unittest.main()